• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The valve (1) comprises a housing (10); a thermostatic element (20), a first end portion of the piston (24), axially opposed to that which is immersed in a thermosettable material contained in the body (22) of the thermostatic element, is fixedly secured to the housing; a return spring (30); an electric heating resistor arranged inside the second end portion of the piston; electrical connection means adapted to supply the resistor from outside the housing; and a valve (60), which is adapted to control a flow of fluid (F) flowing through the housing, in an oriented direction from the first end portion to the second end portion of the piston, and which is bonded to the body of the the thermostatic element so that the relative movements between the body and the piston, resulting from the expansion and contraction of the thermally expandable material, move the valve relative to the housing between closure and opening positions vis-à-vis -vis the fluid flow. In order to protect this valve from overpressure peaks, the valve is mounted on the body of the thermostatic element movably along the axis (XX) so that as long as the pressure of the fluid flow upstream of the valve is lower than at a predetermined threshold value, the valve is fixed with respect to this body under the action of the return spring, whereas when this pressure exceeds the threshold value, the valve moves axially along this body by counteracting the action of the spring.
    公开号:FR3016198A1
    申请号:FR1450151
    申请日:2014-01-09
    公开日:2015-07-10
    发明作者:Nicolas Pottie
    申请人:Vernet SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a thermostatic valve. The invention is particularly concerned with thermostatic valves which are used in the cooling circuits of heat engines, especially those of motor vehicles. In many applications in the fluidic field, particularly for the cooling of vehicle heat engines, thermostatic valves are used to distribute a fluid entering different traffic lanes, depending on the temperature of this fluid. These valves are said to be thermostatic in the sense that the displacement of their internal shutter (s) is controlled by a thermostatic element, that is to say an element which comprises a body, containing a thermally expandable material, and a piston, immersed in this thermodilatable material, the body and the piston being movable relative to each other in translation along the longitudinal axis of the piston. In order to distribute the fluid according to other parameters, in particular conditions outside the valve such as the ambient temperature or the load of the vehicle propelled by the engine equipped with the valve, it is known to integrate a heating electric resistor into the valve, arranged inside the piston of the thermostatic element, for heating the thermodilatable material, which makes it possible to drive the valve from the outside thereof, independently or in addition to the temperature of the incoming fluid, in particular by means of 'a calculator embedded in the vehicle and programmed appropriately. The invention is more specifically concerned with thermostatic valves, whose body of the thermostatic element is fixedly attached to a shut-off valve, the latter being typically mounted tightly around the body of the thermostatic element, and whose piston of the thermostatic element is, at its end opposite to that immersed in the thermodilatable material contained in the body, integrally fixed to the valve housing, and by any appropriate means, while electrical wires or the like pass through the end aforementioned piston for, from outside the housing, join the heating resistor. In this configuration, an incoming fluid flow, from the piston to the body of the thermostatic element, necessarily induces an overpressure upstream of the shutter valve when the valve closes the flow of this fluid flow through the housing of the valve, the shutter valve resistant to overpressure under the action of a return spring associated with the thermostatic element. When, unexpectedly or in a predictable manner in certain use cases, this overpressure reaches peaks such that the spring load is counteracted, the valve and the body of the thermostatic element, which is fixedly secured to the valve, are pushed. by the flow of fluid, the body of the thermostatic element then descending on the piston: by friction between the body and the piston of the thermostatic element, the piston tends to be towed together with the body and the valve, which makes run the risk of weakening or even damage the fixing of the end of the piston to the housing and / or electrical son passing through this end of the piston. The object of the present invention is to provide a thermostatic valve of the type described above, which is improved in that it is protected from overpressure peaks upstream of its shutter valve. For this purpose, the subject of the invention is a thermostatic valve, comprising: - a housing, - a thermostatic element which comprises both a body, containing a thermally expandable material, and a piston, which piston is thermally conductive, extends in length along an axis, includes a first end portion which is fixedly secured to the housing, and also includes a second end portion which is axially opposite to the first end portion and which is immersed in the thermally expandable material, so that the body and the piston are movable relative to each other along the axis, away from one another under the action of an expansion of the thermally-expandable material, - a return spring which is adapted for bringing the body and the piston closer to the thermostatic element during a contraction of the thermally expandable material, - an electric heating resistor, which is arranged inside the second end part ale of the piston of the thermostatic element, - electrical connection means, which are adapted to supply the electrical resistance from outside the housing and which extend from the resistor to the outside of the piston, via the first end portion of the piston, and - a valve, which is adapted to control a flow of fluid flowing through the housing, in a direction from the first end portion to the second end portion of the piston, and which is connected to the body of the thermostatic element so that the relative movements between the body and the piston of the thermostatic element, resulting from the expansion and contraction of the thermally expandable material, move the valve relative to the housing between a closed screw position with respect to the fluid flow and an open position with respect to the fluid flow, characterized in that the valve is mounted on the body of the thermostatic element in a mobile manner the axis so that, as long as the pressure of the fluid flow upstream of the valve is lower than a predetermined threshold value, the valve is fixed relative to this body under the action of the return spring, whereas when the pressure of the fluid flow upstream of the valve exceeds the threshold value, the valve moves axially along the body by counteracting the action of the return spring. One of the ideas underlying the invention is to question the traditional assembly of the shutter valve on the body of the thermostatic element, this traditional assembly typically being a tight fit of the valve around this body, which has the well-known advantages of substantially limiting the leakage of passage to the contact interface between the valve and the body of the thermostatic element, as well as reducing the vibrations of the thermostatic element "cold", that is to say ie when its piston is deeper into the body than the dimension at which the deployment of the piston relative to the body begins to cause the movement of the valve relative to the valve housing. Thus, a contrario of this technical prejudice relating to the fixed assembly of the valve on the body of the thermostatic element, the invention proposes to leave the movable valve, in the longitudinal axis of the piston of this thermostatic element, on the body. of the thermostatic element, this mobility, typically translative, however, being implemented only in case of peaks of overpressure upstream of the valve. Thus, when the pressure upstream of the valve remains below a predetermined threshold value, the fixed connection between the valve and the body of the thermostatic element is maintained under the action of the return spring associated with the thermostatic element, the load of this spring opposing the pressure of the fluid upstream of the valve. When the pressure upstream of the valve increases to overcome the load of the return spring, only the valve is pushed axially in the direction of the fluid flow, sliding around the body of the thermostatic element, which itself remains fixed relative to the housing and therefore does not induce stress, including traction, on the piston of the thermostatic element. The connection between the piston and the housing, whatever the embodiment of this connection, is thus not weakened. The thermostatic valve according to the invention is of a simple design, avoiding the addition of a specific overpressure spring, since the unloading of the overpressure peaks is obtained by moving the "main" control valve. The size and manufacturing cost of the thermostatic valve according to the invention are substantially identical to those of a thermostatic valve of the prior art. In particular, according to one embodiment of the invention, no specific arrangement of the body of the thermostatic element is necessary: in other words, the invention can be implemented with a pre-existing thermostatic element. According to another embodiment, the sliding contact interface between the valve and the body of the thermostatic element is sealed, with specific arrangements, which will be described in more detail later.
    [0002] According to additional advantageous features of the thermostatic valve according to the invention, taken separately or in any technically possible combination: the valve is mounted on the body of the thermostatic element so that, while the resistance is substantially inactive: - As the pressure of the fluid flow upstream of the valve is less than the threshold value, the valve occupies, relative to the housing, its closed position and is held fixedly relative to the body of the thermostatic element under the action of the return spring, while - when the pressure of the fluid flow upstream of the valve exceeds the threshold value, the valve leaves its closed position relative to the housing, by moving along the body of the element thermostatic; - The valve is mounted coaxially and sliding fit around the body of the thermostatic element; the body of the thermostatic element is provided with a bearing zone, against which the valve is axially supported by the return spring when the pressure of the fluid flow upstream of the valve is lower than the threshold value, and which the valve deviates axially when the pressure of the fluid flow upstream of the valve is greater than the threshold value; the body of the thermostatic element includes a drum for storing the heat-dissolvable material, which, in the direction opposite to the direction of the fluid flow, is extended by a flange of the body, the barrel and the flange being connected to one another; another by a shoulder which projects from the barrel towards the outside of the latter and which delimits said bearing zone; - The thermostatic valve further comprises a seal interposed between the valve and the body of the thermostatic element so as to substantially seal the contact between them; - the seal is O-ring; - The seal is interposed substantially radially to the axis between the valve and the body of the thermostatic element; - The collar of the body of the thermostatic element is provided with a peripheral groove for receiving the seal; - The thermostatic valve is devoid of any sealing means reported between the valve and the body of the thermostatic element. The invention will be better understood on reading the description which will follow, given solely by way of example and with reference to the drawings in which FIGS. 1 to 3 are a longitudinal section of a thermostatic valve according to FIG. invention, illustrating three different operating configurations. FIGS. 1 to 3 show a thermostatic valve 1 intended to regulate the circulation of a fluid, in particular a cooling liquid circulating in a cooling circuit of a heat engine. The valve 1 comprises a housing 10, which is made for example of a plastic material or a metal alloy, and which is designed to keep the other components of the valve 1 assembled together, while leaving the possibility to the fluid of circulating through the housing 10, forming a fluid flow F regulated by the other components of the valve 1. The housing 10 includes a tubular body 12 which is centered on a geometric axis XX in the direction in which the flow flows fluid F when the latter internally passes through the tubular body 12, as shown in the figures. This circulation of the fluid flow F is oriented, in the sense that the flow of fluid F internally passes through the tubular body 12 of the housing 10 in a predetermined direction, namely from top to bottom in the figures. The valve 1 also includes a thermostatic element 20 which is centered on the X-X axis. More specifically, the thermostatic element 20 includes a body 22, centered on the X-X axis and containing a thermally expandable material such as a wax. The thermostatic element 20 also comprises a piston 24, whose longitudinal geometric axis is aligned on the axis XX within the valve 1. An axial end portion 24.1 of the piston 24, which corresponds to the downstream end portion of this piston in the direction of the fluid flow F, is immersed in the thermodilatable material contained in the body 22. In the assembled state, the body 22 and the piston 24 are movable relative to one another in translation according to the XX axis: under the effect of the expansion of the heat-dissipatable material contained in the body 22, the piston 24 unfolds outside the body, while, during a contraction of the thermally expandable material, the piston retracts inside the body under the effect of return of a compression spring 30 which is functionally interposed between the body of the thermostatic element and the housing 10. In the embodiment considered in the figures, the spring 30 is substantially centered on the X axis X and its end turn 31, opposite its end turn 32 acting on the body 22 of the thermostatic element, that is to say its end turn 31 downstream in the direction of the fluid flow F, is based on a rigid armature 33 which is secured to a downstream portion 14 of the housing 10 by arrangements known per se and therefore not detailed.
    [0003] In the assembled state of the valve 1, the piston 24 of the thermostatic element 20 is fixedly secured to the housing 10. More specifically, in a manner known per se, the upstream end portion 24.2 of this piston 24 is permanently fixed to a upstream portion 16 of the housing 10, arranged across the axis XX. In practice, various embodiments can be envisaged with regard to the permanent joining of the end portion 24.2 of the piston 24 to the housing portion 16: this joining can be carried out either by fitting, or by overmolding, or by addition of a mechanical holding system, etc. In all cases, it is understood that, when the thermally expandable material of the body 22 of the thermostatic element 20 expands, respectively contracts, the piston 24 is held stationary relative to the housing 10, because of the fixing of its end portion upstream 24.2 to this housing, while the body 22 deviates, respectively approaches, the piston 24 relative to the housing 10, moving in translation along the axis XX in the direction of the fluid flow F, respectively in the opposite. The valve 1 further comprises an electric heating resistor 40, as well as electrical wires 50 supplying electricity to the resistor 40 from the outside of the case 10, these wires connecting the resistor 40 to a source of current, external to the valve 1, not shown. In a manner known per se, the resistor 40 is arranged inside the downstream end portion 24.2 of the piston 24 of the thermostatic element 20, so that this resistance can heat the thermodilatable material contained in the body 22 of the thermostatic element. . To this end, the piston 24 is made, at least as regards its downstream end portion 24.1, a thermally conductive material, typically metal. In practice, various embodiments are possible with regard to the heating resistor 40, this resistance being symbolized in FIG. 1 by a zig-zag line, without this schematic representation being exhaustive of the present invention. In the same way, the embodiment of the wires 50 is not limiting of the invention, in the sense that these wires can be made by any electrical conductor, connecting the resistor 40 to the aforementioned external current source, however being noted that, regardless of their embodiment, these son 50 extend from the resistor 50 to the outside of the housing 10, through the upstream end portion 24.2 of the piston 24 and thus crossing at least the upstream portion 16 of the housing 10, as shown schematically in Figure 1.
    [0004] The valve 1 further comprises a shut-off valve 60 having a tubular overall shape which, in the assembled state of the valve 1, is substantially centered on the axis X-X. In its peripheral portion 62 turned radially away from the axis XX, the valve 60 delimits a peripheral surface 62A which, in use, is provided to cooperate with a seat 12A delimited internally by the tubular body 12 of the housing 10: to the assembled state of the valve 1, when the surface 62A is pressed in sealing contact against the seat 12A, the valve 60 prevents the flow of fluid between the valve and the body 12 of the housing 10, closing the passage for the flow of fluid F through the housing 10 and maintaining this flow of fluid F only on the upstream side of the valve 60, as in the configuration shown in Figure 1, while, when the surface 62A is spaced from the seat 12A, the fluid flow F flows, from the upstream of the valve 60, between this valve and the tubular body 12 of the housing 10, thus passing through the housing, as shown in FIGS. 2 and 3. In practice, the sealing contact surface 62A and /where the seat 12A can be made directly by, respectively, the peripheral portion 62 of the valve 60 and / or the tubular body 12 of the housing 10, or, conversely, the peripheral portion 62 of the valve 60 and / or the body 12 of the housing 10 may be, for this purpose, provided with a seal, reported, for example, by overmolding. In its peripheral portion 64 rotated radially towards the axis XX, the valve 60 is assembled on the body 22 of the thermostatic element 20. More specifically, in the embodiment considered in the figures, this peripheral portion 64 of the valve 60 has a stepped annular shape, which is centered on the axis XX and which includes, successively in the direction of the axis XX, an upstream ring 64.1 and a downstream ring 64.2, connected to one another by a shoulder 64.3 projecting from the downstream ring 64.2 towards the outside of the latter. This peripheral portion 64 of the valve 60 is mounted on the body 22 of the thermostatic element movably along the axis XX: the downstream ring 64.2 of the valve 60 is mounted coaxially and in sliding fit around a shaft 22.1 of the body 22, containing the thermodilatable material of this body, and the upstream ring 64.1 internally receives a complementary collar 22.2 of the body 22, this collar 22.2 extending, in the opposite direction to the fluid flow direction F, the shaft 22.1 of this body. The shaft 22.1 and the flange 22.2 of the body 22 of the thermostatic element 20 are connected to each other by a shoulder 22.3, which projects from the roof 22.1 towards the outside thereof and which delimits an area 22.3. Against which the shoulder 64.3 of the valve 60 can be supported axially in the opposite direction to the direction of the fluid flow F. In the assembled state of the valve 1, the spring 30 acts on the valve 60, with the support of its upstream end turn 32 on the downstream side of the valve 60, so as to press axially in support, in the opposite direction to that of the fluid flow F, the shoulder 64.3 of the valve 60 against the shoulder 22.3 of the body 22, plus precisely against the support zone 22.3A of the latter. In other words, more generally, as long as the action of the spring 30 on the valve 60 is not counteracted by the valve itself, this valve 60 is fixed relative to the body 22 of the thermostatic element 20, here by axial support against the support zone 22.3A of this body 22: as long as the spring 30 holds the valve 60 in position relative to the body 22 of the thermostatic element, the relative movements between this body and the piston 24 of the thermostatic element control corresponding displacements of the valve 60 relative to the housing 10, the valve then being displaceable, by driving the body 22 relative to the piston 24 and thus relative to the housing 10 which this piston is fixedly secured between a position shutter, which is shown in Figure 1 and wherein the surface 62A of the valve 60 is in sealing engagement against the seat 12A of the housing 10, and an open position, which is shown in Figure 2 and in which the knew Rface 62A is spaced from the seat 12A. Of course, insofar as, when the valve 60 is in its closed position of FIG. 1, the flow of fluid F is maintained upstream of the valve 60, without reaching the barrel 22.1 of the body of the thermostatic element, the heating of the heat-dissipatable material contained in the barrel 22.1, necessary for the expansion of this material and therefore the separation of the body 22 with respect to the piston 24 of the thermostatic element, is to be controlled by the activation of the resistance heating 40.
    [0005] Moreover, regardless of the position of the body 22 of the thermostatic element 20 relative to the housing 10, including its position in Figure 1 corresponding to the closed position for the valve 60, the valve 60 remains free to slide axially along the body 22 of the thermostatic element 20 in the direction of the fluid flow F. This sliding occurs when the pressure of the fluid flow F, upstream of the valve, is greater than a predetermined threshold value, depending on the load of the spring 30: indeed, when the pressure of the fluid flow F upstream of the valve 60 exceeds the aforementioned threshold value so as to counteract the action of the spring 30 on the valve, the latter moves axially along the body 22 under the action of this fluid flow pressure F, here by sliding its downstream ring 64.2 around the barrel 22.1 of the body of the thermostatic element. Thus, in the event of overpressure peaks on the upstream side of the valve 60, the latter passes, for example, from its closed position of FIG. 1 to the unloading position of FIG. 3, in which its surface 62A is separated from the seat 12 A to allow the passage of the fluid flow F downstream of the valve, without displacement of the body 22 of the thermostatic element 20 relative to the housing. It is thus clear that the valve 1 is protected from the overpressure peaks upstream of the valve. Advantageously, the assembly of the valve 1 is provided so that, cold, that is to say as long as the heating resistor 40 is inactive or insufficiently active to induce a significant expansion of the thermally expandable material, the spring 30 acting on the valve 60 to simultaneously press its surface 62A in sealing engagement against the seat 12A of the housing 10 and pressing its shoulder 64.3 against the zone 22.3A of the body 22 of the thermostatic element: in this way, while the pressure of the fluid flow F upstream of the valve 60 is less than the aforementioned threshold value, the valve 60 occupies its closed position relative to the housing 10 when the valve is cold and the valve deviates from this shutter position to allow the passage of the fluid flow F downstream of the valve as soon as the resistor 40 is activated, without the beginning of the separation of the body 22 relative to the piston 24, resulting from the expansion of the thermo material expandable, has to catch a residual axial play between the shoulders 22.3 and 64.3. According to an optional arrangement, which is implemented in the embodiment considered in the figures, the valve 1 also comprises a seal 70 which is interposed between the valve 60 and the body 22 of the thermostatic element 20 so that to seal the contact between the valve and the body of the thermostatic element, and at least as long as the pressure of the fluid flow F upstream of the valve 60 is less than the aforementioned threshold value. In this way, in all configurations of use of the valve 1 or, at least, as the valve 60 is fixed relative to the body 22 of the thermostatic element 20, the fluid flow F is prevented from s flow downstream of the valve passing between the valve and the body 22 of the thermostatic element, to a tolerance close leak. Advantageously, this seal 70 is toric. In addition, in order not to induce an axial positioning offset between the valve 60 and the body 22 of the thermostatic element 20, this seal is advantageously interposed exclusively radially between the valve and the body of the thermostatic element: thus, in the embodiment considered in the figures, this seal 70 is received in a peripheral groove 22.4 dug in the outer face of the collar 22.2 of the body 22, being radially interposed between the bottom of this groove 22.4 and the upstream ring 64.1 of the valve 60. In all cases, the presence of the seal 70, interposed between the valve 60 and the body 22 of the thermostatic element 20, dampens and / or catches the vibrations and the small twisting movements. of the body 22 of the thermostatic element 20, in particular with respect to the piston 24 when the thermostatic element is cold. According to another embodiment, which is not shown in the figures, the seal 70 which has just been described may be omitted: more generally, in this alternative embodiment not shown, the valve 1 is devoid any sealing means attached between the valve 60 and the body 22 of the thermostatic element 20. It is understood that, in this case, the sealing threshold at the assembly interface between the valve 60 and the body 22 of the thermostatic element 20 is not severe, since a fluid leak downstream of the valve 60 is tolerated regardless of the position of the valve relative to the housing, including in its closed position of Figure 1. L interest of this alternative embodiment is to be able to use, as a thermostatic element 20, a pre-existing thermostatic element, since no development of its body 22 is necessary for the movable mounting of the valve 60 around this body 22 : e In fact, many pre-existing thermostatic elements include a shoulder similar to the shoulder 22.3 shown in the figures, connecting a barrel of this pre-existing thermostatic element, similar to the barrel 22.1 shown in the figures, to a flange which corresponds to the flange 22.2 shown on FIG. the figures, with the difference that it is devoid of throat 22.4. Various arrangements and variants to the valve 1 are also possible. By way of example, in a manner known per se, the body 22 can be extended on the opposite side to the piston 24, by a rod movably carrying another shutter than the valve 60, for controlling the regulation of the circulation of the fluid supplying the valve in a way other than that regulated by the valve, in particular to ensure a by-pass function within a cooling circuit of an engine.
    权利要求:
    Claims (10)
    [0001]
    CLAIMS1.- Thermostatic valve (1), comprising: - a housing (10), - a thermostatic element (20) which comprises both a body (22), containing a thermally-expandable material, and a piston (24), which piston is thermally conductive, extends in length along an axis (XX), includes a first end portion (24.2) which is fixedly secured to the housing (10), and also includes a second end portion (24.1) which is axially opposite to the first end portion and which is immersed in the thermally expandable material, so that the body and the piston are movable relative to each other along the axis, by moving apart from one another under the action of an expansion of the thermally expandable material; - a return spring (30) which is adapted to bring the body (22) and the piston (24) of the thermostatic element (20) closer together when contraction of the thermally expandable material, - an electric heating resistor (40), which is encée within the second end portion (24.1) of the piston (24) of the thermostatic element (20), - electrical connection means (50), which are adapted to supply the resistor (40) with electricity from the outside of the housing (10) and which extend from the resistance to the outside of the piston (24), via the first end portion (24.2) of the piston, and - a valve (60), which is adapted for controlling a flow of fluid (F) flowing through the housing (10) in a direction from the first end portion (24.2) to the second end portion (24.1) of the piston (24) and which is connected to the body (22) of the thermostatic element (20) so that the relative movements between the body and the piston of the thermostatic element, resulting from the expansion and contraction of the thermally expandable material, move the valve relative to the housing between a shutter position with respect to the fluid flow and a screw-open position -vis the fluid flow, characterized in that the valve (60) is mounted on the body (22) of the thermostatic element (20) movably along the axis (XX) so that, as the pressure fluid flow (F) upstream of the valve is lower than a predetermined threshold value, the valve is fixed relative to this body under the action of the return spring (30), whereas when the pressure of the fluid flow in upstream of the valve exceeds the threshold value, the valve moves axially along the body by counteracting the action of the return spring.
    [0002]
    2. Thermostatic valve according to claim 1, characterized in that the valve (60) is mounted on the body (22) of the thermostatic element (20) so that, while the resistor (40) is substantially inactive: - As the pressure of the fluid flow (F) upstream of the valve is less than the threshold value, the valve occupies, relative to the housing (10), its closed position and is held fixedly relative to the body of the thermostatic element under the action of the return spring (30), - when the pressure of the fluid flow upstream of the valve exceeds the threshold value, the valve leaves its closed position relative to the housing, by moving along the body of the thermostatic element.
    [0003]
    3. Thermostatic valve according to one of claims 1 or 2, characterized in that the valve (60) is mounted coaxially and in sliding fit around the body (22) of the thermostatic element (20).
    [0004]
    4. Thermostatic valve according to any one of the preceding claims, characterized in that the body (22) of the thermostatic element (20) is provided with a bearing zone (22.3A), against which the valve ( 60) is supported axially by the return spring (30) when the pressure of the fluid flow (F) upstream of the valve is lower than the threshold value, and from which the valve axially deviates when the pressure of the fluid flow upstream of the valve is greater than the threshold value.
    [0005]
    5. Thermostatic valve according to claim 4, characterized in that the body (22) of the thermostatic element (20) includes a shaft (22.1) for storing the thermally expandable material, which, in the opposite direction to the direction of the flow of fluid (F), is extended by a flange (22.2) of the body (22), the barrel and the flange being connected to each other by a shoulder (22.3) which projects from the barrel towards the outside of the latter and which delimits said support zone (22.3A).
    [0006]
    6. Thermostatic valve according to any one of the preceding claims, characterized in that the thermostatic valve (1) further comprises a seal (70) interposed between the valve (60) and the body (22) of the thermostatic element (20) so as to substantially seal the contact between them.
    [0007]
    7. Thermostatic valve according to claim 6, characterized in that the seal (70) is toric.
    [0008]
    8. Thermostatic valve according to one of claims 6 or 7, characterized in that the seal (70) is interposed substantially radially to the axis (XX) between the valve (60) and the body ( 22) of the thermostatic element (20).
    [0009]
    9. Thermostatic valve according to any one of claims 6 to 8, taken in combination with claim 5, characterized in that the flange (22.2) of the body (22) of the thermostatic element (20) is provided with a peripheral groove (22.4) for receiving the seal (70).
    [0010]
    10. Thermostatic valve according to any one of claims 1 to 5, characterized in that the thermostatic valve is devoid of any sealing means attached between the valve and the body of the thermostatic element. 10
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    US10408117B2|2019-09-10|
    CN105899779A|2016-08-24|
    FR3016198B1|2016-01-15|
    WO2015104325A1|2015-07-16|
    US20160333767A1|2016-11-17|
    CN105899779B|2018-09-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0333687A2|1988-03-18|1989-09-20|S.T.C., Inc.|Fail-safe thermostat for vehicular system|
    GB2331806A|1997-08-08|1999-06-02|Behr Thermot Tronik Gmbh & Co|Linear actuating drive having a thermostatic operating element|
    US20020070367A1|2000-11-07|2002-06-13|Waldemar Friesenhahn|Valve housing with embedded electrical leads|
    WO2005078255A2|2004-02-11|2005-08-25|Cooper-Standard Automotive Inc.|Fail-safe thermostat device for vehicular cooling systems|
    US20090183696A1|2008-01-18|2009-07-23|O'flynn Kevin P|Liquid cooling system for internal combustion engine|
    GB191108113A|1911-03-31|1911-11-09|William Clark|An Improved Relief Valve.|
    ES2112717B1|1993-07-19|1998-12-01|Bayerische Motoren Werke Ag|COOLING ARRANGEMENT FOR AN INTERNAL COMBUSTION ENGINE OF AN AUTOMOBILE.|
    US5901750A|1996-02-06|1999-05-11|Nartron Corporation|Variable flow orifice valve assembly|
    US5813598A|1996-10-25|1998-09-29|Hyundai Motor Company, Ltd.|Thermostat device for protecting an engine of a vehicle from overheating|
    US20080223316A1|2007-03-16|2008-09-18|International Engine Intellectual Property Company, Llc|Engine thermostat having bypass pressure-dampening fluid passage|
    US8141790B2|2008-11-21|2012-03-27|Dana Canada Corporation|Thermal bypass valve with pressure relief capability|
    FR2963531B1|2010-07-29|2014-03-21|Vernet|HEAT CARTRIDGE AND THERMOSTATIC ELEMENT COMPRISING SUCH A CARTRIDGE|
    DE102010062206A1|2010-11-30|2012-05-31|Behr Thermot-Tronik Gmbh|Thermostatic valve with coolant shut-off function|
    CN203067075U|2012-10-15|2013-07-17|上海汽车集团股份有限公司|Thermostat and automobile engine cooling system provided with thermostat|FR2987095B1|2012-02-22|2014-03-28|Vernet|THERMOSTATIC SLEEVE VALVE|
    FR3034162B1|2015-03-24|2018-09-21|Vernet|THERMOSTATIC DEVICE FOR CONTROLLING CIRCULATION OF A FLUID, AND THERMOSTATIC VALVE COMPRISING SUCH A DEVICE|
    FR3044782B1|2015-12-07|2018-01-12|Vernet|THERMOSTATIC MONOCOMMANDE CARTRIDGE AND MIXER FAUCET WITH SUCH A CARTRIDGE|
    FR3050512B1|2016-04-26|2018-09-28|Vernet|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    FR3050510B1|2016-04-26|2018-09-21|Vernet|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    FR3054282B1|2016-07-21|2018-08-31|Vernet|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    FR3075304B1|2017-12-15|2020-01-10|Vernet|HEATING CARTRIDGE FOR A THERMOSTATIC ELEMENT, AS WELL AS THERMOSTATIC VALVE COMPRISING SUCH A CARTRIDGE|
    FR3103021B1|2019-11-13|2022-01-21|Vernet|Thermostatic device for regulating the circulation of a fluid, as well as corresponding thermostatic valve and method of manufacturing such a device|
    法律状态:
    2015-01-23| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-24| PLFP| Fee payment|Year of fee payment: 3 |
    2017-01-05| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-22| PLFP| Fee payment|Year of fee payment: 5 |
    2018-01-19| GC| Lien (pledge) constituted|Effective date: 20171212 |
    2019-12-12| PLFP| Fee payment|Year of fee payment: 7 |
    2019-12-27| GC| Lien (pledge) constituted|Effective date: 20191114 |
    2020-12-30| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-10| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1450151A|FR3016198B1|2014-01-09|2014-01-09|THERMOSTATIC VALVE|FR1450151A| FR3016198B1|2014-01-09|2014-01-09|THERMOSTATIC VALVE|
    PCT/EP2015/050245| WO2015104325A1|2014-01-09|2015-01-08|Thermostatic valve|
    US15/110,632| US10408117B2|2014-01-09|2015-01-08|Thermostatic valve|
    CN201580004286.3A| CN105899779B|2014-01-09|2015-01-08|Thermostatic valve|
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