DRY SPRINKLER AND METHOD FOR TRIPPING A DRY SPRINKLER TO RELEASE FLUID FROM A FLUID SUPPLY IN THE EV

专利摘要:
dry sprinkler. The present invention relates to a dry sprinkler that includes a conduit with a fluid inlet and a fluid outlet, a valve positioned near the fluid inlet, and a fire sprinkler head that is positioned near the fluid outlet. the fire sprinkler head is operatively connected to the valve by a link. when the fire sprinkler head reacts to an elevated temperature condition, the linkage is engaged and operational to open the valve. in a normal state, before the fire sprinkler head reacts, the link may not be oriented towards the fire sprinkler head. the connection may also be non-rigid and/or be in an uncompressed state within the conduit. the dry sprinkler duct can be flexible.
公开号:BR112015014677B1
申请号:R112015014677-5
申请日:2013-07-31
公开日:2021-07-27
发明作者:Richard A. Bucher；Frank J. Cygler；William J. Reilly；Yi Liu
申请人:Victaulic Company；
IPC主号:

专利说明:

FIELD OF TECHNIQUE
[001] This disclosure relates to dry sprinklers that are used in fire protection systems in buildings and other structures, and more particularly to dry sprinklers that have a flexible conduit that extends between a sprinkler head and a sprinkler valve. The dry sprinkler can be connected to a branched flow supply line that delivers fire suppression fluid such as water. BACKGROUND
[002] Dry sprinklers are used in fire protection systems to extinguish or suppress fires. Dry sprinklers can be connected to a fluid distribution system that is installed in buildings or other structures. The fluid distribution system is connected to a fluid supply, specifically water or other fire suppression fluid. Dry sprinklers usually include a sprinkler head and an inflexible, rigid conduit that connects the sprinkler head to a connector that fits into a branched fluid supply line. The conduit includes a valve that is positioned at the connector fitting end and the valve remains closed under normal conditions so that no fluid enters the sprinkler conduit until the sprinkler is actuated to release the fire suppression fluid. Dry sprinklers have sprinkler heads that are equipped with a thermally responsive component that is designed to be activated in the event of a fire.
[003] The thermally responsive component of the fire sprinkler head quickly triggers the valve to open and release fluid through the sprinkler to extinguish the fire. As firing mechanisms, dry sprinklers usually employ a rigid and inflexible connecting member that is positioned between the valve and the fire sprinkler head and is pressed against the fire sprinkler head by the force of the fluid that is incident on the valve. . When a thermally responsive element reacts in response to a fire, the connecting member is pushed out of the valve path by fluid pressure or gravity, which causes the valve to open. SUMMARY
[004] Dry sprinklers can be particularly useful in unconditioned (e.g., unheated) spaces such as attics, balconies, walkways and sidewalks, due to the fact that the conduit of a dry sprinkler does not contain any fluid under conditions and there is therefore a risk of fractures from freezing or other damage. Thus, in contrast to wet sprinkler systems, there is no need for countermeasures to prevent fluid freezing in the sprinkler. For similar reasons, dry sprinklers are useful in spaces that are kept under refrigerated conditions (including freezing).
[005] Dry installation of sprinklers can be difficult. During installation of the sprinkler system, the fluid distribution system is usually installed first, including the pipe network with the branched fluid supply lines. Once the branch lines are installed, the installer determines the length of dry sprinkler that is required based on the distance from the desired sprinkler head location to the connector that fits into the branch line. Dry sprinklers are ordered in the length and configuration determined by the installer and the dry sprinklers are then custom-built and shipped to the installer, which can cause construction delays of up to two weeks or more. Such delays are undesirable and can greatly increase the construction cost. Alternatively, the system designer and/or specifications may determine sprinkler lengths. However, even under these circumstances, adjustments may have to be made in the field, which can cause unwanted delays.
[006] Also, once the branched line piping has been installed, it is difficult to move the location of the sprinkler head. Similarly, in some cases the location of the sprinkler head will be limited by the construction based on where the branch line pipe can be installed.
[007] In accordance with one aspect, a dry sprinkler is provided that includes a fluid conduit that is configured to couple a fluid supply, a valve that is positioned near a first end of the conduit, wherein the valve has a closed state which prevents fluid supply fluid from flowing through the conduit and an open state which allows fluid supply fluid to flow through the conduit, a fire sprinkler head positioned near a second end of the conduit, where the fire sprinkler head has a thermally responsive element that reacts to an elevated temperature condition and an unoriented connection positioned within the conduit that is operatively coupled to the valve, wherein the unoriented connection has at least one unengaged state and an engaged state. The unoriented link is not oriented towards the sprinkler head in the disengaged state, the reaction of the thermally responsive element to the high temperature condition causes the link to change from the disengaged state to the engaged state and the link to change to the engaged state from the disengaged state allows the valve to change from the closed state to the open state.
[008] According to another aspect, a dry sprinkler is provided that includes a flexible conduit that is configured to be coupled to a fluid supply, a valve positioned near a first end of the conduit, wherein the valve has a member of seal which is urged to a closed position where fluid from the fluid supply is prevented from flowing through the conduit, where the sealing member is movable to an open position where fluid from the fluid supply flows through the conduit, a fire sprinkler head positioned near a second end of the duct, wherein the fire sprinkler head has a thermally responsive element that is configured to react to an elevated temperature condition, an unoriented connection positioned within the flexible duct and which is present in the flexible conduit in a state such that the unoriented connection is not oriented towards the fire sprinkler head, and m that a first portion of the unoriented connection is operatively coupled to the sealing member to urge it to the open position when the unoriented connection is engaged, an engagement action connected to the second portion of the unoriented connection, wherein the action of The engagement is operatively coupled to the thermally responsive element so that when the thermally responsive element reacts to the high temperature condition, the engagement action is triggered to apply tension to the unoriented connection, thus causing the connection to move the member of seal to open position.
[009] According to another aspect, a dry sprinkler is provided that includes a flexible conduit that is configured to be coupled to a fluid supply line, a valve positioned near a first end of the conduit, wherein the valve has a closed state in which fluid from the fluid supply is prevented from flowing through the conduit and an open state where fluid from the fluid supply is allowed to flow through the conduit, in which an unoriented connection has a first portion that is operatively coupled to the valve to open the valve when the unoriented connection is engaged, wherein the unoriented connection is present in a state such that the connection is not oriented towards the second end of the conduit, a sheath member which is located within the conduit and surrounds the unoriented connection over most of the length of the unoriented connection and a fire sprinkler head positioned near a second end. duct adhesion, where the fire sprinkler head has a thermally responsive element that reacts to an elevated temperature condition. The unoriented bond is operatively connected to the thermally responsive element so that the reaction of the thermally responsive element to the elevated temperature condition causes the bond to be engaged.
[0010] According to another aspect, a dry sprinkler is provided which includes a flexible conduit, a valve located near a first end of the flexible conduit, a fire sprinkler head located near a second end of the flexible conduit, an unoriented connection located within the flexible conduit and which is present in a state such that the unoriented connection is not oriented towards the fire sprinkler head, wherein a first portion of the unoriented connection is operatively coupled to the fire valve. so that the tensioning of the link allows the valve to move to an open position and tensioning means to apply tension to the unoriented link.
[0011] According to another aspect, a fire protection sprinkler system is provided, which includes a network of pipes connected to a fluid supply, a control valve in fluid communication with the pipe network and the supply of fluid, wherein the control valve is configured to control fluid flow between the fluid supply and the pipe network, at least one dry sprinkler fluidly connected to the pipe network, wherein the dry sprinkler includes a duct, a fire sprinkler head positioned at the fluid outlet of the duct, wherein the fire sprinkler head has a thermally responsive element that reacts to an elevated temperature condition, a valve sprinkler positioned near the fluid inlet, and which has a closed state which prevents fluid flow through the conduit and an open state which allows fluid flow through the conduit, an unoriented connection positioned within the conduit and which is present. te in the conduit in a state such that the unoriented connection is not oriented toward the fire sprinkler head, wherein a first portion of the unoriented connection is operatively coupled to the sprinkler valve such that engagement of the unoriented connection allows that the valve moves to the open state and a latching action that is coupled to a second portion of the unoriented connection and the reaction of the thermally responsive element to the high temperature condition causes the latching action to apply voltage to the unoriented connection. oriented.
[0012] According to another aspect, a dry sprinkler is provided that includes a flexible conduit that is configured to be coupled to a fluid supply line, a valve positioned near a first end of the conduit, wherein the valve has a closed state in which fluid from the fluid supply is prevented from flowing through the conduit and an open state where fluid from the fluid supply is allowed to flow through the conduit, in which an unoriented connection has a first portion that is operatively coupled to the valve such that engagement of the unoriented connection allows the valve to open, wherein the unoriented connection is present in a state such that the connection is not oriented towards the second end of the conduit and a sprinkler head fire protection positioned near a second end of the duct, where the fire sprinkler head has a thermally responsive element that reacts to a temperature condition. the high. The unoriented bond is operatively connected to the thermally responsive element so that the reaction of the thermally responsive element to the elevated temperature condition causes the bond to be engaged.
[0013] According to another aspect, a dry sprinkler is provided that includes a flexible conduit that is configured to be coupled to a fluid supply, a valve positioned near a first end of the conduit, wherein the valve has a closed state in which fluid is prevented from flowing through the conduit and an open state in which fluid is allowed to flow through the conduit, an uncompressed connection having a first portion which is operatively coupled to the valve such that the engagement of the uncompressed connection allow the valve to open, where the uncompressed connection is present in a state so that it is not under compressive force, and a fire sprinkler head positioned near a second end of the conduit, where the fire sprinkler head has a thermally responsive element that reacts to an elevated temperature condition, in which the uncompressed connection is operatively connected to the thermally responsive element. nive.
[0014] According to another aspect, a dry sprinkler is provided that includes a flexible conduit that is configured to be coupled to a fluid supply, a valve positioned near a first end of the conduit, wherein the valve has a closed state in which fluid is prevented from flowing through the conduit and an open state in which fluid is allowed to flow through the conduit, a substantially non-rigid connection having a first portion that is operatively coupled to the valve so that the engagement of the non-rigid connection allows the valve to open and a fire sprinkler head positioned near a second end of the duct, where the fire sprinkler head has a thermally responsive element that reacts to a high temperature condition, where the connection non-rigid is operatively connected to the thermally responsive element.
[0015] In accordance with yet another aspect, there is provided a method for firing a dry sprinkler in the event of a fire, wherein the dry sprinkler includes (i) a conduit that is coupled to the fluid supply, (ii) a valve which is positioned near a first end of the duct and is urged into a closed state to prevent fluid from the fluid supply from flowing through the duct, (iii) a fire sprinkler head that is positioned close to a second end of the duct and includes a thermally responsive element that reacts to an elevated temperature condition and (iv) an unstressed link that is operatively coupled to the valve such that engagement of the unstressed link allows the valve to open and the method includes steps engaging the link upon reaction of the thermally responsive element to the high temperature condition and applying tension to the link at least until the valve opens and allows fluid from the fluid supply to flow to through the conduit.
[0016] In accordance with yet another aspect, a method for installing a flexible dry sprinkler in a branched fluid line is provided. The method includes (i) providing a dry flexible sprinkler, which includes a flexible conduit, a valve disposed near the inlet end of the flexible conduit, wherein the valve has a closed state that prevents fluid flow of the fluid supply through. of the duct and an open state that allows fluid flow from the fluid supply through the duct, a fire sprinkler head positioned near the outlet end of the duct, where the fire sprinkler head has a thermally responsive element which reacts to an elevated temperature condition and a connection positioned within the flexible conduit, the connection having a first portion and a second portion, wherein the first portion is operatively connected to the valve to urge the valve to an open position when the The link is engaged and the second portion is operatively connected to the thermally responsive element to engage the link when the thermally responsive element. nsivo reacts to an elevated temperature condition, (ii) connect the flexible dry sprinkler to the branched fluid line, (iii) bend the flexible conduit to locate the fire sprinkler head, and (iv) secure the flexible dry sprinkler in a position fixed with a support. The flexible dry sprinkler is installed in the branch line and secured to the support without engaging the link and without opening the valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The exemplary modalities are described in detail below with reference to the attached drawings in which:
[0018] Figure 1 is a schematic diagram illustrating a fire protection sprinkler system;
[0019] Figures 2A to 2C are schematic cross-sectional diagrams of a flexible dry sprinkler according to an embodiment;
[0020] Figure 3 is a schematic cross-sectional diagram of an inflexible and rigid dry sprinkler according to an embodiment;
[0021] Figure 4 is a perspective view of a dry flexible sprinkler according to an embodiment;
[0022] Figure 5 is an enlarged view of the second end (fluid outlet) section of the flexible dry sprinkler shown in Figure 4;
[0023] Figures 6A and 6B are cross-sectional views of the second end section shown in Figure 5 illustrating the sprinkler dry and a normal state (Figure 6A) and illustrating the sprinkler dry in a state after the thermally responsive element reacts to an elevated temperature condition (Figure 6B);
[0024] Figures 7A and 7B are cross-sectional views showing another embodiment of a dry flexible sprinkler in a normal state (Figure 7A) and showing the dry flexible sprinkler in a state after the thermally responsive element reacts to a condition high temperature (Figure 7B);
[0025] Figures 8A and 8B are cross-sectional views showing the second end of another embodiment of a dry flexible sprinkler in a normal state (Figure 8A) and showing the second end of the dry flexible sprinkler in a state after the thermally responsive element reacts to an elevated temperature condition (Figure 8B);
[0026] Figures 9A and 9B are cross-sectional views showing the second end of another embodiment of a dry flexible sprinkler in a normal state (Figure 9A) and showing the second end of the dry flexible sprinkler in a state after the thermally responsive element reacting to an elevated temperature condition (Figure 9B);
[0027] Figures 10A and 10B are cross-sectional views showing the second end of another embodiment of a dry flexible sprinkler in a normal state (Figure 10A) and showing the dry flexible sprinkler in a state after the head of fire sprinkler reacting to an elevated temperature condition (Figure 10B);
[0028] Figure 11A is an exploded cross-sectional view showing the components of the first end section (valve and valve trigger portion) of another embodiment of a dry sprinkler, Figure 11B is a partial cross-sectional view that illustrates the first end section of the dry sprinkler in a normal state and Figure 11C is a partial cross-sectional view illustrating the first end section of the dry sprinkler once the linkage is engaged in response to a temperature condition. high;
[0029] Figures 12A and 12B are partial cross-sectional views illustrating the first end section of another embodiment of a dry sprinkler in a normal state (Figure 12A) and showing the first end section once the connection is engaged in response to an elevated temperature condition (Figure 12B);
[0030] Figures 13A and 13B are partial cross-sectional views illustrating the first end section of another embodiment of a dry sprinkler in a normal state (Figure OA) and showing the first end section once the connection is engaged in response to an elevated temperature condition (Figure 13B);
[0031] Figures 14A and 14B are cross-sectional views illustrating the first end section of another embodiment of a dry sprinkler in a normal state (Figure 14A) and showing the first end section once the connection is engaged in response to an elevated temperature condition (Figure 14B);
[0032] Figures 15A and 15B are partial cross-sectional views illustrating the first end section of another modality of a dry sprinkler in a normal state (Figure 15A) and showing the first end section once that the link is engaged in response to an elevated temperature condition (Figure 15B); and
[0033] Figures 16A to 16C are cross-sectional views illustrating a flexible dry sprinkler with a connecting sheath. DETAILED DESCRIPTION OF MODALITIES
[0034] The dry sprinklers provided by this disclosure can be used in connection with fire protection sprinkler systems that are installed in buildings or other structures. Figure 1 is a schematic representation of an exemplary embodiment of a fire protection sprinkler system 10 that is installed in frame 12. Fire protection sprinkler system 10 includes a fluid supply line 14 that is connected to a supply of fire suppression fluid. The fluid supply can be a source of water, such as the water supply that is provided by municipalities, a water container or container that contains a fire suppression fluid in addition to water (for example, fluid for a fire suppression foam , powder fire suppressor or similar).
[0035] The fluid supply line 14 connects to a control valve 16 which controls the supply of fluid to a network of pipes 18. The control valve 16 is in fluid communication with a main fluid supply line 17 which supplies fire suppression fluid to a plurality of branch lines 19 extending from the main line 17. Each of the branch lines 19 supplies fire suppression fluid to a plurality of dry sprinklers 15. In the case of In a fire (or other similar high temperature event), dry sprinklers 15 are configured to distribute fire suppression fluid within structure 12 to extinguish or suppress the fire.
[0036] Although Figure 1 illustrates dry sprinklers 15 in a pendant position, the sprinklers can be configured in any position, including an upright, pendant, or sidewall position.
[0037] Figures 2A to 2C are schematic diagrams illustrating a flexible dry sprinkler 250. The dry sprinkler 250 is connected to branch line 272. The dry sprinkler 250 includes a conduit 210 with a first end portion 225 and a second end portion 235. A connector 275 fluidly connects first end portion 225 to branch line 272. For example, connector 275 may include a threaded opening for receiving mating threads in first end portion 225 of dry sprinkler 250.
[0038] The connection of the dry sprinkler 250 to the branch line 272 forms a Y connection geometric axis at the center of the branch line connector 275 along the length of the conduit 210 in its unbent shape (see, for example, Figure 2A) . Conduit 210 has a length identified as DLBN.
[0039] The dry sprinkler 250 may include a valve (not shown in Figures 2A through 2C) positioned near the first end 225 of conduit 210. As discussed in more detail below, the valve has an open state that allows fluid to flow. of branch line 272 through conduit 210 and a closed state that prevents fluid from flowing from branch line 272 through conduit 210. Such a valve is sometimes referred to herein as a "sprinkler valve" to distinguish it from a valve main control, for example.
[0040] A fire sprinkler head 240 is coupled to the second end portion 235 of the dry sprinkler 250. The fire sprinkler head is configured to react to the high temperature condition in the event of a fire to trigger the valve to open . Fire sprinkler head 240 may be coupled to the duct in any suitable way, for example, by connecting a threaded end of the sprinkler head to a threaded end of the duct or by mechanically coupling the sprinkler head to the second end of the duct.
The dry sprinkler 250 includes a link 220 which is positioned within the conduit 210 in this mode. Link 220 generally extends from first end portion 225 of the conduit to second end portion 235 of the conduit and operatively connects to the valve to open the valve after the fire sprinkler head reacts to the condition. of high temperature.
Connection 220 has a disengaged state and an engaged state. Figures 2A to 2C illustrate link 220 in an disengaged state, which is the state that link 220 is in when the valve is closed. As discussed in detail below, in the event of a fire, the thermally responsive element 242 of the fire sprinkler head 240 reacts and triggers an engagement apparatus (also referred to herein as an "engaging action") that engages the link 220 by applying a load to connection 220. The load is applied by connection 220 to a valve trigger. The valve kitten allows the valve to move to an open state. Link 220 thus has a "disengaged state" in which the link is operatively coupled to the valve, but the valve remains closed and a "engaged state" in which the link is operative to open the valve, for example when a load is applied. the call. Once the linkage is disengaged, the valve opens and can be held in an open state while the linkage continues to be engaged, or the valve can later be kept in an open state even if the linkage returns to an disengaged state.
[0043] Connection 220 can be characterized by one or more of the following:
[0044] (a) In a disengaged state, the linkage is not oriented so that it is not oriented towards the sprinkler head (except, of course, by its own weight of gravity force) and/or the valve. The term "unoriented" describes a configuration in which no force is applied to the link to propel it toward the sprinkler head and/or valve. So, for example, the fluid pressure impinging on the valve does not apply a force to the link to propel it towards the sprinkler head or valve and there is also no mechanical device that drives the link towards the sprinkler head or valve;
[0045] (b) In a disengaged state, the link is not under any compressive force (also except gravitational forces), eg the link is not pressed against a portion of the sprinkler dry by the fluid pressure that is incident on the valve;
[0046] (c) In a disengaged state the link is not energized and in an engaged state the link is energized;
[0047] (d) In a disengaged state, the link has substantially no stiffness;
[0048] (e) The bond cannot support its own weight and cannot sustain a bending stress;
[0049] (f) The link may be bent entirely around a radius that is less than one cross-sectional dimension of the link;
[0050] (g) The connection is flexible;
[0051] (h) The bond is relatively inelastic such that it does not significantly stretch in the engaged state (for example, the bond may have an elastic modulus of 100 MPa to 150 GPa, 1 GPa to 50 GPa, and 2 GPa at 10 GPa).
[0052] By way of example, the link 220 may include a strand, a rope, a string, a loop, a strap, a strap-like member in which strap loop portions connect once the link is engaged, a cable, a ribbon, a tube, a wire, a monofilament line and a multifilament line. In the illustrated embodiments, link 220 is positioned entirely within the conduit. However, in some configurations, only a portion of the link 220 can be positioned within the duct or the entire link 220 can be positioned outside the duct or on a sidewall of the duct.
[0053] A first portion of link 220 can be connected to the valve trigger and a second portion of link 220 can be connected to the engagement action. Link 220 may thus extend from the valve trigger to the engagement action and typically extends along at least 40 percent of the length of conduit 210, at least 60 percent of the length of conduit 210, or at least 90 percent of the length of conduit 210. The connection is typically positioned to cross the midpoint of conduit 210. The size and cross-sectional dimension of connection 220 is not particularly important as long as the connection is operable to open the valve within a time period. of desired response.
[0054] As shown in Figures 2B and 2C, the conduit 210 of the dry sprinkler 250 may be flexible. Providing a flexible conduit can have significant advantages. For example, while on a rigid and rigid dry sprinkler, the location of the fire sprinkler head is fixed based on the length and shape of the dry sprinkler and the location and position of the 275 connector in a Flexible dry sprinkler, the location of the fire sprinkler head can be moved or oriented in a variety of ways relative to connector 275, only limited by the length and flexibility of the conduit. Using a flexible dry sprinkler is also advantageous because the specific location of the fire sprinkler head can be varied even after the pipe network is installed. In this regard, for rigid and rigid dry sprinklers, the pipe network is installed in a structure, the desired locations of the sprinkler heads are determined and the dry sprinklers are selected so that the fire sprinkler heads are positioned on the or near the desired locations. This can cause some construction delays based on the time it takes for dry sprinklers to be ordered, manufactured and delivered. Also, dry sprinklers are typically produced to order. In contrast, using flexible dry sprinklers, an installer or construction contractor can keep sprinklers of varying lengths on hand and can adjust the position and angle of the sprinkler head as needed. This should reduce construction delays. Also, the dry sprinkler manufacturer can pre-manufacture and supply sprinklers of different dimensions based on an anticipated need.
[0055] Flexible conduit 210 may be used with a connection 220 having one or more features described above and connection 220 may be configured with conduit 210 so that connection 220 is not inadvertently engaged during installation. In that regard, link 220 can be configured so that the fire sprinkler head can be positioned and secured in the desired location without inadvertently engaging link 220 and opening the valve.
[0056] As shown in Figures 2B and 2C, the second end of flexible conduit 210 can be displaced laterally relative to the first end of conduit 210 by a distance DLAT. The lateral displacement distance can be characterized as a portion or percentage of the conduit length (DLEN). Flexible conduit 210 can therefore be characterized in that the second end of conduit 210 can be displaced laterally relative to the first end of conduit by a distance corresponding to at least 5 percent of the length of conduit 210, at least 10 percent of the length of conduit 210, at least 30 percent of the length of conduit 210, 30 to 95 percent of the length of conduit 210, or 50 to 90 percent of the length of conduit 210.
[0057] As also shown in Figures 2B and 2C, the flexibility of the duct can be further characterized by comparing DLEN to the vertical distance between the two ends of the duct (DVERT) when the sprinkler is in a curved state. Flexible conduit can be characterized by the fact that the conduit has the ability to bend so that DVERT corresponds to 75 percent or more of DLEN; 50 percent or more of DLEN or 10 percent or more of DLEN.
[0058] As shown in Figure 2C, angle α is the angle at which conduit 210 can be bent to achieve a desired orientation and location of the sprinkler head. In this regard, the fire sprinkler head can be positioned and secured so that fire suppression fluid exits the dry sprinkler 250 at any desired angle. For example, while an upright inflexible sprinkler is fixed relative to the connection axis Y at an angle of 180°, the flexible dry sprinkler can be configured so that the sprinkler head geometry axis X can be offset. to the connection geometric axis Y at an angle (α) of 20° to 160°, 45° to 135° and 75° to 105°.
[0059] Connection 220 is provided in or along conduit 210 with sufficient clearance such that (i) connection 220 has a free length that is greater than the length of conduit 210 which extends between the points at which the connection is fixed to the sprinkler dry; (ii) the fire sprinkler head can be displaced laterally relative to the first end of the duct by the maximum combination angle and distance (for example, the DLAT distances and α angles discussed above) without a load being applied to the link 220 that would open the valve. The presence of this clearance at link 220 minimizes the risk of the valve being accidentally opened when the sprinkler is transported, installed or used.
Flexible conduit 210 may include a flexible portion comprising, for example, a corrugated tube, a hose or a braided tube, which may be made of known materials including metal, rubber, etc. Flexible conduit 210 may include one or more flexible portions along at least 20 percent of the conduit length (DLEN), along at least 40 percent of the conduit length, along at least 60 percent of the conduit length, along at least 80 percent of the duct length, from 50 to 95 percent of the duct length, or along its entire length. Flexible conduit 210 may have a low elasticity so that when it is bent into a desired position it maintains its bent shape and does not return to its original position.
[0061] In some embodiments, flexible conduit 210 includes an inflexible portion near the first end 225 (fluid inlet end) that surrounds the valve and allows the conduit to be connected to branch line 272. Flexible conduit 210 may also include a inflexible portion that is close to the second end 235 (fluid outlet end) of the duct that allows the fire sprinkler head to be connected to the duct. The inflexible portion near the second end 235 may also include a reducer that is formed to have at least one flat surface so that the second end of the conduit can be secured in place by affixing a support to the flat surface. The other end of the support can be attached to a secured structure. The support and inflexible portion of the duct can be configured so that the sprinkler head is secured and resists torsional forces. Generally, installation of a sprinkler system that includes support must be in accordance with the applicable codes and guidelines that are used in that field.
[0062] Dry sprinklers can have different lengths of, for example, 0.3 m, 0.61 m, 1.22 m, 1.83 m (1 ft, 2 ft, 4 ft, 6 ft) or any length between them.
[0063] In some modes, in some modes, the dry sprinkler can be rigid and inflexible. Figure 3 illustrates an embodiment of an inflexible dry sprinkler 350 that includes an inflexible and rigid conduit 310. The inflexible dry sprinkler is otherwise the same as the embodiment described in connection with Figure 2 and similar parts are identified with corresponding numbers. For example, rigid rigid dry sprinkler 350 also includes an unoriented link 320 that is depicted in an uncoupled state in Figure 3. Link 320 is operatively coupled to thermally responsive element 342 of sprinkler head 340 such that the link becomes engaged when the thermally responsive element 342 reacts to an elevated temperature condition. Once link 320 becomes engaged, the valve opens and a fire suppression fluid is allowed to flow out of the sprinkler.
[0064] Figures 4 to 6B depict an embodiment of a flexible dry sprinkler and illustrate the operation of the fire sprinkler head and the engagement action that engages the linkage to cause the valve to open.
[0065] Referring to Figure 4, the flexible dry sprinkler 450 includes a flexible conduit 410 which includes a flexible portion made of a metallic corrugated tube 412. The flexible conduit 410 has a first end portion 425 and a second end portion. end 435. The first end portion 425 includes a connector 428 with a threaded portion 421 that is configured to connect the dry sprinkler 450 to a branch line of a network of pipes. The second end portion 435 of the flexible conduit has a reducer 438 which houses an engagement action 455 for engaging the link 420 (Figures 6A to 6B). A fire sprinkler head 440 is coupled to the second end portion 435. Flexible conduit reducer segments may be inflexible.
[0066] Referring to Figures 5 to 6B, fire sprinkler head 440 is fitted to the second end of conduit 410 on reducer 438. Fire sprinkler head 440 includes a body 447 defining an opening 449 that extends through thereof, a thermally responsive element 442, bulge cap 448 and spacer 441 which are positioned in opening 449, arms 444 extending from body 447 and a baffle 446 which is provided at the apex of arms 444 to diverge the flow of the fluid sideways and downward when the sprinkler is activated. The thermally responsive element 442 can be, for example, a glass bulb that breaks at a predetermined temperature or a fusible element that has a melting portion that melts at a predetermined temperature. Each of these high temperature reactions causes the bulge cap 448 and spacer 441 to lose support and fall toward the baffle 446. The thermally responsive element can be set to react to different high temperature conditions and can react when the temperature reaches, for example, 57.22 °C, 79.44 °C, 121.11 °C, 162.78 °C, 204.44 °C (135 °F, 175 °F, 250 °F, 325°F, 400°F) or even more.
[0067] In this embodiment, the thermally responsive element 442, the bulge cap 448 and the spacer 441 are operatively coupled to the engagement action 455. A tubular support 472 is supported by the spacer 441, which is, in turn, supported by the cap. protrusion 448. Tubular support 472 includes pin 470 which engages detent 459 of shaft 454.
[0068] The shaft 454 is rotatably mounted in the flexible conduit410. This shaft 454 is rotatably oriented in one direction with a torsion spring 456 that is provided on the outside of reducer 438 within housing 452. Under normal conditions, pin 470 engages detent 459 and prevents shaft 454 from rotating. Shaft 454 includes a link connection 457 that connects link 420 to axle 454.
[0069] Figure 6A is a cross-sectional view of the dry sprinkler 450 when the link 420 is in an disengaged state and Figure 6B is a cross-sectional view of the dry sprinkler 450 when the link 420 is in an engaged state. The link 420 illustrated in Figures 6A-B is a flexible cord or a cord-like member, such as a rope, ribbon or wire. In its disengaged state (Figure 6 A), link 420 is provided with clearance and is not oriented in a direction to the fire sprinkler head or in a direction to the valve. As discussed in detail below, link 420 is operatively coupled to the valve by a valve trigger that is positioned near the first end portion 425 (Fig. 4) of flexible conduit 410. The valve trigger (the modalities of which are described below in connection with Figures 11A to 15B) is configured to cause the valve to move to an open state when link 420 is tensioned.
[0070] As shown in Figure 6B, in the event of a fire or other high temperature condition, when the thermally responsive element 442 reacts to the high temperature condition, the spacer 441 and bracket 472 will move outward with respect to the conduit 410, that is, toward deflector 446. Pin 470 will disengage from detent 459, allowing rotationally oriented shaft 454 to rotate rapidly, thus wrapping link 420 around axle 454. This action will apply a load to link 420 , tensioning link 420 and causing link 420 to pull the valve trigger. The valve trigger will then open the valve and fluid will flow through the conduit and out of the sprinkler head.
[0071] The engagement action that engages the link 420 to apply a load thereto is not particularly limited to those disclosed embodiments. Generally, the engagement action can store energy in the form of mechanical energy, potential energy, hydraulic energy, chemical energy, etc. and can release energy to engage the link and apply a load when the engagement action is triggered, by the reaction of the thermally responsive element of the sprinkler head. Furthermore, when the engagement action operates to apply tension to the link, it can do so by winding (as in the embodiment shown in Figures 4 to 6), pulling or otherwise displacing the link to apply tension. Additional structures operable to engage the link are illustrated in Figures 7 to 10 and still other structures would be understood to be operable by those skilled in the art.
[0072] Figures 7A and 7B illustrate an embodiment where the engagement action includes a weight that applies a load to the link 720. Similar to the embodiment described above, the dry sprinkler 750 includes a flexible conduit 710 with a corrugated tube 712. flexible conduit 710 includes a second end portion 735 that is coupled to a fire sprinkler head 740. Connection 720 is a string or string-like member that is provided loosely in its normal or disengaged state (Figure 7A).
[0073] The engagement action 755 may include a weight to which an end of the link 720 is connected. The weight is supported by plug 748 of fire sprinkler head 740. As shown in Figure 7B, when the thermally responsive element 742 of fire sprinkler head 740 reacts to the high temperature condition by breaking spacer 748 and engaging 755 it drops through the sprinkler head 740. The weight of the coupling action 755 removes the slack from the link 720 thereby applying tension to the link and causing the valve that is positioned on the first end portion 725 to open. Opening the valve causes 780 fluid to flow down from the valve, through the conduit and out of the fire sprinkler head.
[0074] The engagement action of a flexible dry sprinkler according to yet another modality is illustrated by Figures 8A and 8B. Engagement action 855 is provided within flexible conduit 810 and is located proximate to second end portion 835 of the conduit. Engagement action 855 includes a compression spring 856, detents 857, a pin 854 and pad 858. Pin 854 is a linkage coupling member and is connected to an end portion of linkage 820. Figure 8A illustrates the linkage in an disengaged state and Figure 8B illustrates the connection in an engaged state.
The flexible dry sprinkler may include a fire sprinkler head 840 at its second end, which includes a body 847 defining an opening 849 therethrough. The fire sprinkler head 840 additionally includes a thermally responsive bulb 842 and a bulge cap 848 and a spacer 841 which are positioned in an opening 849.
[0076] As can be seen, the spacer 841 supports the pad858 which, in turn, supports the pin 854 that is connected to the link 820. The compression spring 856 is present in the conduit under compression between the detents 857 and the pad 858 , thus orienting the pad 858 and the pin 854 to the sprinkler head 840. The link 820 in this modality is a string or string-type member that is provided loosely in its disengaged state and is not affected by the compression of the spring therein. state. Link 820 remains unoriented to the fire sprinkler head until thermally responsive element 842 reacts to an elevated temperature condition.
[0077] As can be seen in Figure 8B, when the thermally responsive element 842 of the fire sprinkler head 840 reacts to a high temperature condition, the bulb breaks, which causes the protrusion cap 848 and spacer 841 to lose Support. Compression spring 856 pushes pad 858 and pin 854 down, which quickly removes slack from the link and applies a load to the link to open the valve.
[0078] Figures 9A and 9B illustrate another embodiment of an engagement action 955. In this embodiment, the engagement action 955 is provided within the flexible conduit 910 and is located near the second end portion 935 of the conduit. Although flexible conduit 910 includes flexible portions so that the location of the sprinkler head can be positioned as discussed above, the flexible conduit portion 910 illustrated in Figures 9A and 9B is rigid and inflexible, which facilitates normal operation of the 955 engagement action when the duct is bent. Engagement action 955 includes compression spring 956, cross support member 958, extension rod 954, pivot bar 914 and pad 972. Link 920 is connected to cross support member 958. Figure 9A illustrates linkage at an disengaged state and Figure 9B illustrates the connection in an engaged state.
[0079] Similar to the embodiment of Figure 8, a fire sprinkler head 940 is provided at the second end, which includes a thermally responsive bulb 942 and a bulge cap 948 and a spacer 941 which are positioned in the opening 949. spacer 941 supports pad 972 which, in turn, supports pivot bar 914, which supports extension rod 954 and cross support member 958. Compression spring 956 is present in the conduit under compression between detent 957 and cross support member 958. Compression spring 956 urges cross support member 958 downward toward fire sprinkler head 940.
[0080] Link 920 in this embodiment is a string or string-type member that is provided loosely in its disengaged state and is not affected by spring compression in that state. As shown in Figure 9A, link 920 remains unoriented to the fire sprinkler head until thermally responsive element 942 reacts to an elevated temperature condition.
[0081] Referring to Figure 9B, when the thermally responsive element 942 of the fire sprinkler head 940 reacts to an elevated temperature condition, the bulb breaks, which causes the bulge cap 948 and spacer 941 to lose support . Compression spring 956 pushes cross support member 958 and extension rod 954 toward the fire sprinkler head, which causes pad 972 to move downward in Figure 9B. As pad 972 moves downward, pivot bar 914 rotates from a horizontal position that supports extension rod 954 (Figure 9A) to a vertical position that does not support extension rod 954 (Figure 9B). Once pivot bar 914 rotates, extension rod 954 is pushed into pad 972 as shown in Figure 9B. this causes cross support member 958 to move quickly towards the sprinkler head, which removes slack from link 920 and applies a load to link 920 to open the valve. Compared to the embodiment of Figure 8, this embodiment may allow a greater amount of slack to be removed from the link because the portion of the engagement action that is coupled to the link can travel a greater distance in the embodiment of Figure 9.
[0082] The engagement action of a flexible dry sprinkler according to yet another embodiment is illustrated in connection with Figures 10A and 10B.
[0083] Figure 10A illustrates a cut away view of the second end 1035 of the flexible dry sprinkler in a normal state when the fire sprinkler head 1040 has not reached an elevated temperature condition. In this embodiment, the engaging action 1055 includes a cross support member 1058 which is supported by a pin 1054 which is, in turn, supported by the protrusion cap 1048 of the fire sprinkler head 1040. The cross support member 1058 is rotationally oriented and is under compression between detents 1057 and compression spring 1056. Link 1020 is connected to the cross support member and is an untensioned string or string-like member.
[0084] As shown in Figure 10B, when the thermally responsive bulb 1042 of the fire sprinkler head 1040 reacts to an elevated temperature condition, the 1048 bulge cap and 1054 pin become unsustainable, which causes the Cross support member 1058 pivots away from detents 1057 and causes compression spring 1056 to push cross support member 1058 outward toward fire sprinkler head 1040. Movement of cross support member 1058 at steering the fire sprinkler head applies a load to the 1020 link, thereby tensioning the 1020 link and pulling on a valve trigger to open the valve.
[0085] As discussed above, the first end of the link in each of the above embodiments is operably coupled to the valve via a valve trigger that is configured to allow or cause the valve to move to an open state. and preferably keeping the valve in the open state once the connection is engaged. In general, the valve can be oriented in a closed state (eg, oriented by interference or mechanical energy) where fluid does not flow through the valve. The valve has an open state in which the orientation is removed and fluid is allowed to flow through the valve. The valve trigger can be operable to translate the applied load to the linkage to release the valve orientation to open the valve as well as keep the valve in an open position. Exemplary embodiments illustrating valve and valve trigger operation are described below in connection with Figures 11A to 15B.
[0086] Figures 11A to 11C illustrate a valve 1160 and valve trigger 1170 according to one embodiment of a dry sprinkler. In this embodiment, both valve 1160 and valve trigger 1170 are positioned near the first end 1125 of conduit 1110. In dry sprinklers, the valve is generally positioned toward the first end (fluid inlet) of the sprinkler that is connected to the branch line. In the illustrated embodiments, the valve is positioned close to the first end, which will allow the substantial majority of the dry sprinkler to be maintained in a dry state during normal operation (i.e., when the thermally responsive element remains intact, i.e. , not reacted).
[0087] Figure 11A is an exploded view illustrating the valve trigger parts 1170 and the valve 160. The valve 1160 is located in the valve opening 1181 near the first end of the conduit. As shown in Figure 1B, valve opening 1181 is closed by cap 1182 and sealing ring 1165. Cap 1182 and valve housing 1167 are supported on pin 1187. Valve trigger 1170 includes valve trigger housing 1190 which holds pivot pin 1186 and hook 1183. Valve trigger housing 1190 may be supported or secured within conduit 1110 through any suitable structure. Valve trigger housing 1190 includes an elongated slot 1192 that accommodates pin 1187, and pin 1187 is movable within elongated slot 1192. Slot 1192 extends in one direction along the length of conduit 1110.
[0088] As can be seen in Figure 11B, when the valve is in the closed state, the pin 1187 is positioned at an upper end of the groove 1192. When the valve is in the closed state, the pin 1187 is supported on the upper end of the groove 1192 by a swivel hook 183. The swivel hook 1183 has a portion that extends underneath and contacts a lower portion of the pin 1 187, thereby supporting the pin 1187 and the cap 1182 in position that holds the valve in a closed state. Hook 1183 is pivotally supported with respect to housing 1190 around pivot pin 1186. Hook 1183 includes a slot 1184 that extends along hook perimeter 1183 and guides link 1120 around hook perimeter.
[0089] Figure 11C illustrates a state where the link 1120 is engaged by an engagement action in response to the thermally responsive element that reacts to a high temperature condition. The engagement action applies a downward load to link 1120. In this state, link 1120 causes the hook to rotate clockwise (from the perspective of Figures 11B and 11C) around the pivot pin 1186. When the hook 1183 rotates beyond a certain point, the pin 1187, the housing 1167 and the cap 1182 become unsupported in the upper portion of slot 1192 and are pushed downwardly (in Figure 11C) by the force of gravity and/or fluid pressure. which is incident on valve 1160. This pushes the sealing member (cap 1182 and sealing ring 1181) out of valve opening 1181 and thereby moves valve 1160 into an open position. As can be seen in Figure 11C, cap 1182 can rotate 90 degrees by the force of torsion spring 1185. Link 1120 is thereby operably coupled to the valve to allow the valve to open when the link is engaged. Forming the valve and valve trigger so that the cap rotates out of the fluid path can prevent the cap from settling into the duct and can thereby prevent blocking of fluid flow in the event of a fire.
[0090] Figures 12A-12B are partial cross-sectional views illustrating a valve trigger 1270 of another embodiment that is provided on a first end portion 1225 of a dry sprinkler. Figure 12A illustrates valve 1260 in a closed position and Figure 12B illustrates valve components in an open position. Valve 1260 includes cap 1282 and sealing ring 1265 which form a sealing member. Cap 1282 and sealing ring 1265 are rotatably supported in housing 1267 and are rotationally oriented by torsion spring 1287.
[0091] Valve trigger 1270 includes a compression spring1213, retaining ring 1257, support balls 1233, and outer housing 1277. Support balls are positioned in slot 1235 and extend partially through housing 1277. As may be seen in Figure 12A, balls 1233 support housing 1267. Balls 1233 are held in place by retainer ring 1257 which is provided with groove 1234 to accommodate support balls 1233. Retainer ring 1257 may optionally be held in the correct place by a compression spring 1213. Retaining ring 1257 can also be held in place by sizing and arranging balls 1233 and/or groove 1234 so that the balls are pressed against retaining ring 1257 with sufficient force to keep the same in place. Link 1220 is connected to the retaining ring. Figure 12A illustrates the sprinkler when link 1220 is in an unengaged state and when valve trigger 1270 has not been fired.
[0092] Figure 12B illustrates the valve trigger in an activated state. In Figure 12B, linkage 1220 is tensioned into an engaged state and pulls retaining ring 1257 with a force that exceeds the force of compression spring 1213. Linkage 1220 pulls retaining ring 1257 downwardly, which releases the balls. of support 1233. Once support balls 1233 are released, housing 1267 moves downwardly which causes cap 1282 and seal ring 1265 to rotate 90 degrees from the force of torsion spring 1287, opening, thus, the valve.
[0093] Figures 13A-13B are partial cross-sectional views illustrating a valve trigger 1370 that is provided on an end portion 1325 of a dry sprinkler. Figure 13A illustrates valve 1360 in closed positions and Figure 13B illustrates valve 1360 in open position. The valve components are similar to those in Figure 12, and include cap 1382 that is rotatably supported on housing 1367. Cap 1382 is rotatably oriented by torsion spring 1387. Valve trigger 1370 includes pivot arms 1337 that have flange portions 1347. Flange portions 1347 support housing 1367 and hold the valve in a closed position. Pivot arms 1337 are provided on the outer circumference of housing 1377, which includes holes or cutouts for receiving flange portions 1347 at one end and pivot end portions 1355 at the other end. Pivot arms 1337 are guided outwardly by fluid pressure force pressing housing 1367 onto flange portions 1347 of pivot arms 1337. Pivot arms 1337 are held in place by retaining ring 1357, which is supported by compression spring 1313. Retaining ring 1357 is connected to link 1320. Figure 13A illustrates the sprinkler when link 1320 is in an unengaged state and when valve trigger 1370 has not been fired.
[0094] Figure 13B illustrates valve trigger 1370 in an activated state when link 1320 is engaged. In Figure 13B, link 1320 is tensioned in an engaged state and pulls ring 1357 downwardly. Once the ring 1357 is pulled down over the swivel ends 1355 of the pivot arms 1337, downward force from the housing 1367 on the flange portions 1347 of the pivot arms 1337 causes the swivel ends 1355 of the arms. of pivot 1337 to pivot outwardly from housing 1377. This, in turn, causes housing 1367 to move downwardly, which allows cap 1382 to rotate by the force of torsion spring 1387, thereby opening, the valve.
[0095] Figures 14A-14B are cross-sectional views illustrating a valve trigger 1470 that is provided on a first end portion 1425 of a dry sprinkler. Figure 14A illustrates valve 1460 in the closed position and Figure 14B illustrates valve 1460 in the open position. The valve components are similar to those in Figure 13, and include cap 1482 that is rotatably supported on housing 1467 around pin 1488. Cap 1482 is rotatably oriented by a spring (not shown). Valve trigger 1470 includes a long pivot arm 1437 that pivots around pivot point 1456 and a short pivot arm 1438 that pivots around pivot point 1466. Long pivot arm 1437 includes an end portion 1447 and short pivot arm 1438 includes flange portion 1448. Pivot arms 1437, 1438 are provided on the outer circumference of housing 1477. When valve 1460 is in the closed position, end portion 1447 of long pivot arm 1437 rests in the flange portion 448 of the short pivot arm 1438 so that the long pivot arm 437 is supported in a position that it extends transversely through the conduit 1410. In that position, the long pivot arm 1437 supports the housing 1467 of the valve 1460. The force of fluid incident on valve 1460 applies a force to housing 1467 and long pivot arm 1437, which creates a rotational moment in short pivot arm 1438.
[0096] Valve trigger 1470 includes retaining ring 1457, which prevents short pivot arm 1438 from rotating outward when valve 1460 is in a closed position. Retaining ring 1457 is supported by compression spring 1413. Link 1420 is connected to retaining ring 1457. Figure 14A illustrates the sprinkler when link 1420 is in an unengaged state and when valve trigger 1470 has not been fired.
[0097] Figure 14B illustrates valve trigger 1470 in an activated state when link 1420 is engaged. In Figure 14B, link 1420 is tensioned in an engaged state and pulls ring 1457 downwardly. Once the ring 1457 is pulled down over the rotating ends of the short pivot arm 1438, the force that the housing 1467 exerts on the long pivot arm 1437 causes the end of the short pivot arm 1438 to rotate outward. from housing 1477, which causes long pivot arm 1437 to rotate clockwise from the perspective of Figures 14A and 14B. This, in turn, causes housing 1467 to move downwardly, which allows cap 1482 to rotate 90 degrees around pin 1488, thereby opening the valve.
[0098] Figures 15A and 5B are cross-sectional views illustrating a valve trigger 1570 that is provided on an end portion 1525 of a dry sprinkler. Figure 15A illustrates valve 1560 in a closed position and Figure 15B illustrates valve 1560 in an open position. In Figure 15A, valve trigger 1570 includes clip 1521, lever 1551, and main pivot 1533. Cap 1582 and sealing member 1565 are rotatably supported within the conduit by main pivot 1533. Lever 1551 is supported by rotational mode with respect to conduit 1510 at pivot point 1549. In Figures 15A and 15B, pivot point 1549 is located on cap 1582 so that lever 1551 is pivotally connected to cap 1582 at pivot point 1549. in a closed position, cover 1582 is supported on lever 151 near pivot point 1549. In an alternative structure, pivot point 1549 may be a pin that is supported on the inner duct wall so that lever 1551 does not rotate. in cover 1582.
[0099] Lever 1551 includes an extension portion 1547 which is supported in notch 1546 of the sprinkler housing when valve 1560 is in a closed state. At the other end, lever 1551 includes a clip end 1562 that is held by clip 1521 when valve 1560 is closed. Valve trigger 1570 also includes a second clip end 1561 that is held by clip 1521 when valve 1560 is closed. Clip 1521 holds lever 1551 in a horizontal position and prevents lever 1551 from rotating around pivot point 1549. Clip 1521 is connected to link 1520.
[00100] Figure 15B illustrates valve trigger 1570 in an activated state when link 1520 is engaged. In Figure 15B, link 1520 is tensioned into an engaged state and pulls clip 1521 down from clip ends 1561, 1562. When clip 1521 is removed, lever 1551 rotates around pivot 1549 which causes the extension portion 1549 rises from notch 1546. This causes cap 1582 to rotate around main pivot 1533 and open valve.
Flexible dry sprinklers can optionally include a connecting sheath as shown in Figures 16A-16C. Flexible dry sprinkler 1650 can be provided with splice 1630 that surrounds splice 120 over the majority of spud length 1620. Splice splice 1630 may optionally be centrally positioned within conduit 1610. linkage sheath 120 can be used to reduce the amount of slack that is created in linkage 1620 when flexible conduit 1610 is bent. Some slack may be desirable in port 1620 to prevent port 1620 from accidentally engaging and opening the valve when the conduit is bent or moved. However, when conduit 1610 is bent to position fire sprinkler head 1640, the amount of slack in link 1620 will generally increase because the distance that link 1620 is required to stretch into conduit 1610 to extend from from the valve trigger at one end to the engagement action at the other end becomes smaller as conduit 1610 is bent, while the free length of link 1620, of course, remains the same. Connector sheath 1630 maintains connector 1620 centrally within conduit 1610 which reduces the amount of slack that is introduced into connector 1620 when flexible conduit 1610 is bent and thereby obviates the need to eliminate extra slack when action hitch is triggered.
[00102] The connecting sheath 1630 may be a hollow tubular member that extends into the conduit substantially from the valve trigger for engaging action. Connector sheath 1630 can substantially extend the length of the duct, i.e., at least 80% of the duct length. Connector sheath 130 may have a cross-sectional dimension (e.g., diameter) that is less than half the cross-sectional dimension of flexible conduit 1610.
[00103] As shown in Figure 16B, connecting sheath 1630 can be coupled to a crossbar member 1632 that centrally positions sheath 1630 within conduit 1610 near the second end 1635. Similarly, as shown in Figure 16C, the Connector sheath 130 may be coupled to a second crossbar member 1634 which centrally positions sheath 1630 within conduit 1610 near first end 1625. Connector sheath 1630 may be made of a flexible resilient material, e.g., a polymer resilient or rubber, which maintains a constant length when flexible conduit 1610 is bent deforming/curving to accommodate the curvatures of conduit 1610 as illustrated in Figure 16A.
[00104] Each of the valves and valve triggers described above may be used in connection with any other modality, including any of the engagement actions, linkages and/or linkage sheaths described above. The type of valve and valve trigger is also not particularly limited, and one of ordinary skill in the art will understand that alternative structures will be operable to control fluid flow through the conduit. Furthermore, although the valve is illustrated to be positioned within the conduit, the valve may be configured to be placed outside the conduit upstream of the fluid inlet end of the conduit, for example, within the branch line.
[00105] The dry sprinklers described in this document can be used with fire suppression systems to provide fire protection in unheated or refrigerated spaces. In some embodiments, the portion of the dry sprinkler that is upstream of the valve may be "wet". The portion of the dry sprinkler including the valve may be positioned in a heat controlled space where the temperature is controlled so that it does not drop below a predetermined temperature. For example, the heat-controlled space can be controlled so that the temperature does not drop below 21.1°C (70°F), below 4.4°C (40°) or below freezing. The "dry" portion of the sprinkler that is positioned downstream of the valve can be subjected to lower temperature conditions because there is no risk that the fire suppression fluid will freeze and rupture the conduit or otherwise disintegrate normal operation. of the sprinkler. Thus, in some embodiments, the portion of the dry sprinkler that includes the fire sprinkler head is located in an unheated space where the temperature is not controlled. Such unheated spaces may include garages, attics, exterior walkways, covered walkways, parking garages, porches, decks, loading docks, ducts and the like. In still other embodiments, the portion of the dry sprinkler that includes the fire sprinkler head may be located in a refrigerated space where fire protection is desired (for example, such as refrigerators or refrigerated room) and where temperatures are maintained near or below a freezing temperature.
[00106] In other embodiments, the entire dry sprinkler can be located in unheated or cooled space if the water flow is stopped upstream of the valve, for example, in a main control valve. In this configuration, the entire sprinkler and connecting branch line remain dry and only the portion of the pipe network upstream of the control valve is wetted. The control valve can then be triggered to open in the presence of a fire by a smoke detector or heat activated sensor.
[00107] Although the disclosed dry sprinklers, sprinkler systems, operating methods and installation methods have been described together with the exemplary modalities, these modalities should be viewed as illustrative, not limiting. It should be understood that various modifications, substitutes, or the like are possible within the spirit and scope of the revelation.

权利要求:
Claims (21)
[0001]
1. A dry sprinkler comprising: a fluid conduit (210) that is configured to couple to a fluid supply (272), the conduit (210) having a first end (225) and a second end (235); the valve (1160) which is positioned near the first end (225) of the conduit (210), the valve (1160) having (i) a closed state that prevents fluid from the fluid supply (272) from flowing through. the conduit (210), and (ii) an open state that allows fluid from the fluid supply (272) to flow through the conduit (210); a fire sprinkler head (240) positioned near the second end ( 235) of the conduit (210), with the fire sprinkler head (240) having a thermally responsive element (442) that reacts in a high temperature condition, characterized by the fact that it also comprises a non-oriented connection (220 ) positioned within the conduit (210) and which is operatively coupled to the valve (11 60) and the thermally responsive element (442), wherein the non-oriented connection (220) has at least one unengaged state and an engaged state; and a sheath member (1630) which is located within the duct (210) and surrounds the unoriented connection (220); wherein (i) the unoriented connection (220) is not oriented towards the sprinkler head in the unoriented state. engaged, (ii) the reaction of the thermally responsive element (442) to the high temperature condition causes the link (220) to change from the unengaged state to the engaged state, and (iii) the change of the link (220) to the engaged state from the not engaged state allows the valve (1160) to change from the closed state to the open state.
[0002]
2. Dry sprinkler according to claim 1, characterized in that it additionally comprises an engagement action that is coupled to the non-oriented connection (220), whereby the engagement action is triggered when the element thermally responsive (442) reacts to the high temperature condition, where the engagement action causes the link to change from the not engaged state to the engaged state, thus allowing the valve (1160) to change from closed to closed state. the open state, in which the engagement action is configured to apply voltage to the unoriented link (220) when the engagement action is triggered.
[0003]
3. Dry sprinkler according to claim 2, characterized in that the engagement action is configured to store energy that is releasable when the thermally responsive element (442) reacts to the high temperature condition, and the engagement action is configured to apply a load to the unoriented link (220) when the stored energy is released.
[0004]
4. Dry sprinkler according to claim 1, characterized in that it further comprises a valve trigger that is coupled to the link, wherein the valve trigger includes a guide member that guides the valve ( 1160) in the closed state and a release member that transfers a load applied to the link when the link changes from the unengaged state to the engaged state to release the orientation applied by the guide member, thus allowing the valve (1160) to move to open state.
[0005]
5. Dry sprinkler according to claim 1, characterized in that the non-oriented connection (220) comprises any of the following: a cord, a rope, a string, a loop, a chain, a chain-like member, a cable, a ribbon, a tube, a wire, a monofilament line and a multifilament line.
[0006]
6. Dry sprinkler according to claim 5, characterized in that a first portion of the unoriented link (220) is connected to a valve trigger that is configured to allow the valve (1160) to move from the closed state to the open state, when the unoriented connection (220) changes from the unengaged state to the engaged state and a second portion of the unoriented connection (220) is connected to an engagement action which is configured to apply a load to bonding when the thermally responsive element (442) reacts to the high temperature condition.
[0007]
7. Dry sprinkler according to claim 6, characterized in that the non-oriented link (220) is provided with clearance, so that a free length of the non-oriented link (220) extending from the valve trigger to the engaging action is longer than a portion of conduit (210) extending from the valve trigger to the engaging action.
[0008]
8. Dry sprinkler according to claim 2, characterized in that the engagement action comprises: a) a tubular cushion member disposed within the fluid conduit (210) (210) near the second end; and b) a link coupling member which is coupled to the unoriented link (220), the link coupling member being supported by the tubular pad member when the link is in the unengaged state, wherein, in the unengaged state , the unoriented connection (220) contains slack, and the reaction of the thermally responsive element (442) to the elevated temperature condition causes the tubular pad member and the connecting coupling member to move within the conduit (210) at direction to the fire sprinkler head (240), which removes slack from the unoriented link (220) and causes the link to change from the not engaged state to the engaged state.
[0009]
9. Dry sprinkler according to claim 8, characterized in that the connecting coupling member is a pin that is directly connected to the tubular pad member.
[0010]
10. Dry sprinkler according to claim 8, characterized in that the engagement action additionally includes a compression spring that guides the tubular pad member toward the fire sprinkler head (240) .
[0011]
11. Dry sprinkler according to claim 1, characterized by the fact that the conduit (210) is flexible.
[0012]
12. Dry sprinkler according to claim 1, characterized in that the sheath member (1630) has a cross-sectional dimension that is less than half the cross-sectional dimension of the flexible conduit.
[0013]
13. Dry sprinkler according to claim 1, characterized in that the sheath member (1630) is centrally positioned in the conduit (210).
[0014]
14. Dry sprinkler according to claim 1, characterized in that the non-oriented connection (220) does not apply a force to keep the valve (1160) in the closed state when the fluid from the fluid supply (272 ) applies a force to the valve (1160).
[0015]
15. Dry sprinkler according to claim 1, characterized by the fact that the non-oriented connection (220) has clearance when in the unengaged state.
[0016]
16. Dry sprinkler, comprising: a conduit (210) that is configured to be coupled to a fluid supply (272), the conduit (210) having a first end (225) which is a fluid inlet and a second end (235) which is a fluid outlet; a valve (1160) positioned near the first end (225), the valve (1160) having a sealing member (1165) which is urged into position. closed, wherein the fluid from the fluid supply (272) is prevented from flowing through the conduit (210), the sealing member (1165) being movable to an open position, where the fluid from the supply fluid (272) flows through conduit (210); and a fire sprinkler head (240) positioned near the second end (235) of the duct (210), the fire sprinkler head (240) having a thermally responsive element (442) that is configured to react in an elevated temperature condition, characterized by the fact that the dry sprinkler further comprises: an unoriented connection (220) positioned within the flexible conduit (210) and which is present in the flexible conduit (210) in a state such that the The unoriented connection (220) is not oriented towards the fire sprinkler head (240), the unoriented connection (220) having a first portion and a second portion, the first portion of the connection (220) not oriented is operatively coupled to the sealing member (1165) to urge the sealing member (1165) to the open position when the non-oriented link (220) is engaged; and an engagement action (455) connected to the second portion of the link (220) not oriented, the engagement action (455) being operatively coupled to the thermally responsive element (442), so that when the thermally responsive element (442) reacts to the high temperature condition, the engagement action (455) is triggered to apply tension to the unoriented link (220), thus causing the link (220) to move the sealing member (1165) to the open position; wherein the valve (1160) is held in the closed state by an orientation force that is transverse to the valve (1160), and the conduit (210) is flexible.
[0017]
17. Dry sprinkler according to claim 16, characterized in that the flexible conduit (210) comprises any one of the following: a corrugated tube, a hose, a braided tube.
[0018]
18. Dry sprinkler according to claim 16, characterized in that the flexible conduit (210) maintains a curved shape when curved.
[0019]
19. Dry sprinkler according to claim 16, characterized in that the non-oriented connection (220) comprises any of the following: a cord, a rope, a string, a loop, a chain, a chain-like member, a cable, a ribbon, a tube, a wire, a monofilament line and a multifilament line.
[0020]
20. A method for firing a dry sprinkler to release fluid from a fluid supply (272) in the event of a fire, wherein the dry sprinkler includes (i) a conduit (210) that is coupled to the fluid supply (272), (ii) a valve (1160) which is positioned near a first end (225) of the conduit (210) and is urged to a closed state to prevent fluid from the fluid supply (272) from flowing. through the conduit (210), (iii) a fire sprinkler head (240) which is positioned proximate to a second end (235) of the conduit (210) and includes a thermally responsive element (442) that reacts in a con- high temperature addition, and (iv) an untensioned link (220) that is operatively coupled to the valve (1160) so that the engagement of the untensioned link (220) allows the valve (1160) to open, the method comprising the steps of engaging the link (220) under the reaction of the thermally responsive element (442) at the elevated temperature condition, characterized by the fact that it further comprises a step of applying voltage to the connection (220) at least until the valve (1160) opens, allowing fluid from the fluid supply (272) to flow through of the conduit (210).
[0021]
21. Method according to claim 20, characterized in that the unstressed connection is disposed within the conduit (210) and is provided with clearance, and the step of engaging the connection includes eliminating the slack in the unstressed connection.

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法律状态:
2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

---

2020-03-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

---

2021-05-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

---

2021-07-27| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 31/07/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

---

申请号 | 申请日 | 专利标题

---

US13/722,571|2012-12-20|

---

US13/722,571|US9345918B2|2012-12-20|2012-12-20|Dry sprinkler|

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PCT/US2013/052835|WO2014099042A2|2012-12-20|2013-07-31|Dry sprinkler|

---