• 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:
    A flow control system for controlling a medium flow rate of a medium passing through a pipe portion of a pipe system, whereby the medium is distributed from a common source to a plurality of consumption devices spread over different floors of a building. The flow control system comprises a flow sensor for measuring a current medium flow through the pipe section, a controller in communicative connection with the flow sensor and provided for evaluating the electrical signal indicative of the measured current medium flow with a value representative of a set medium flow, and a valve control system in communication with the controller and provided for adjusting the controllable valve in response to the controller's control signal. The flow sensor is provided outside the flow chamber and has a static measuring principle based on a wave propagating in the medium. The valve control system has an equal characteristic curve.
    公开号:BE1018594A3
    申请号:E2009/0388
    申请日:2009-06-26
    公开日:2011-04-05
    发明作者:Philip Vandenheuvel；Peter Vandendriessche；Jan Ulens
    申请人:Belparts；
    IPC主号:
    专利说明:

    Flow control system for central heating / cooling system and / or sanitary system
    This invention relates to a central heating / cooling system and / or a sanitary system according to the preamble of claim 1.
    In residential, and in particular in non-residential buildings, various applications are known that use a pipe system that distributes a medium from a common source to a plurality of consumer devices scattered throughout the building. Such a system of lines may be a closed circuit comprising a number of supply lines connecting the common source to each of the consumer devices and a number of discharge lines connecting each of the consumer devices back to the common source. This is, for example, the case where the consumer devices are heat exchange systems. The piping system can also be open; circuit comprising a plurality of supply lines connecting the common source only to each of the consumer devices, but without return lines connecting each of the consumer devices back to the common source. This is. for example, the case in sanitary applications. Such a system of pipes can also be a combination of a closed and an open circuit. This is the case, for example, when heating water is supplied from a common source to one. number of heat exchangers that are provided. for heating the rooms of a building, and a number of water taps, which are provided for supplying hot water to the consumer.
    In such systems, it is known to include valve valves with an adjustable valve for controlling the medium flow rate to the associated consumer device. The position of the valve determines the amount of medium that passes through the consumer device per unit of time.
    In heat exchange applications this means that the position of the valve determines the amount of heat that is supplied to the chamber by the heat exchanger. However, the amount of medium that passes through the consumer device is not only determined by the position of the valve, but also by the pressure with which the medium passes through the consumer device, "as well as by other influencing factors. This pressure differs, for example, depending on the distance between the common source and the consumer device. This is particularly the case in non-residential buildings, where the system of pipes and the consumer devices are in most cases distributed over a plurality of different floors of the building.The pressure at a specific consumer device can even vary over time, for example due to the closing or opening of a valve in a line to one or more other consumer devices In heat exchange t For example, the closing of such a valve may lead to an increase in the pressure of the medium flowing to one or more of the other heat exchangers in the circuit and, consequently, to a higher flow to these heat exchangers and to an increase in the amount of energy / heat supplied from the heat exchangers to the specific room. This is not desired.
    Various systems have already been developed that try to provide for a pressure-independent control of the medium flow through the system of pipes.
    WO-A-9206422 is related, for example, to a system for automatically adjusting the medium flow rate to a set flow rate independent of pressure variations between the input and the output of the heat exchanger. To that end, the control system comprises a first medium flow control unit, set to a predetermined value, and a second medium flow control unit, which allows to create a variable pressure loss. The control system further comprises a mechanical drive mechanism for automatically compensating for any detected variation of pressure loss between the input and the output of the heat exchanger by more or less closing the second medium flow control unit. The pressure difference between the input and the output, and thus the set medium flow rate, is only set once. The control system has the disadvantage that only small medium flow variations can be compensated, which limits the application range of the system.
    Another type of control system for piping systems is known from US-B-6435207. US-B-6435207 describes a flow control valve for setting and measuring flow rates in pipes. The flow control valve comprises a closing element provided in a flow chamber for setting a desired flow and a sensor provided in or near the flow chamber for measuring a value that is representative of the flow through the flow chamber. The flow control valve further comprises a computer unit which determines the flow from the value measured by the sensor and from the characteristic values of the control valve that are stored in an electronic database near the sensor. These characteristic values are valve specific. The adjustment of the flow through the part of the system of pipes is done by manually adjusting the shut-off element of the flow control valve until the desired flow value is displayed on the computer. Such a control system has the disadvantage that the characteristics of the housing are used to determine the current flow. The characteristic values or characteristic curve of a control valve gives the correct relationship between the medium flow rate and the position of the control valve at constant pressure. The system can be calibrated for use at a certain nominal pressure, due to the fact that the characteristic values of the control valve are required, only a limited range of pressure variations can be accurately compensated.
    US-A-5927400 discloses a flow control system for controlling the flow to a heat exchanger. The system comprises a turbine type flow sensor in which a turbine is driven by the through-flowing medium. The number of revolutions per unit time of the turbine is counted for determining the medium flow rate at the turbine. The sensor displays a pulse signal created by magnets on the turbine, so that the number of pulses per unit time forms a measure for the flow. A computer unit which uses set characteristics that depend on the flow rate range compares the measured flow rate with a set flow rate that is derived from a temperature setting and which in turn controls a valve. The system has the disadvantage that its accuracy is poor, in particular at low flows, which again limits the range of application of the system.
    The flow control systems known from US-A-2008/029174, WO-A-2008/039065, DE-A-102006028178 and US-A-2002/040733 are not suitable for use in central heating / cooling systems and / or sanitary systems.
    It is therefore an object of this invention to provide a flow control system for specific application central heating / cooling systems and / or sanitary systems, with precise control of the flow over the entire application range.
    This is achieved according to the present invention with a flow control system with the technical features according to the first claim.
    By the term "medium" as used herein is meant any liquid, gas, smoke, aerosol, flowing solid or any mixture thereof or any other flowing medium known to those skilled in the art.
    By "before device A" or "after device A" is meant respectively "before device A, taken in the direction of flow of the medium" and "behind device A, taken in the direction of flow of the medium".
    With the term "heat exchange" as used herein is meant for heating and / or cooling.
    By the term "consumer device" as used herein is meant any device that either consumes energy supplied through the medium or consumes the medium itself, including but not limited to a heat exchanger (heating and / or cooling) or a water tap.
    ; The flow control system according to the invention comprises: - a flow sensor for measuring an actual medium flow through the conduit section and generating an electrical signal indicative of the measured actual medium flow - a controller in communicative connection with the flow sensor, the controller providing for evaluating the electrical signal is indicative of the measured current medium flow rate with a value representative For a set medium flow rate and generating a control signal based on that evaluation, - a valve control system in communicative connection with the controller, the valve control system a flow chamber comprising a controllable valve in the conduit section, the valve control system being provided for adjusting the controllable valve in response to the control signal from the controller.
    The value representative of the set medium flow rate can be a desired flow rate value or a setting from which a desired flow rate value can be derived, such as, for example, a desired room temperature setting.
    According to the invention, the flow sensor is arranged outside the flow chamber and has a. static measuring principle based on a wave propagating in the medium.
    An analysis of the state of the art has shown that the range of application of the flow control systems is limited to either taking nominal pressure as a central point (variable pressure loss systems and systems using a characteristic flow curve); so that the system can only work accurately in a limited pressure range around this central point, or by the type of sensor used.
    According to the invention, the flow sensor is selected from a series of sensors which have a static measuring principle, i.e. without moving parts, which is advantageous in view of the prevention of wear on the moving parts, risks of malfunction and the need for maintenance. Another advantage of a system that has a static measurement is that, for example in comparison with a turbine-type sensor, the pressure drop across the sensor caused by the measurement can be minimized.
    According to the invention, the flow sensor has a measuring principle based on a wave propagating in the medium. The wave can be an energetic or electromagnetic wave or a wave induced in the medium. Examples are: - ultrasonic flow sensors, where ultrasonic transducers are used for inducing and detecting ultrasonic sound waves and thereby measuring the flow - swirl flow sensors, where an obstruction is placed in the flow path to induce swirls in the medium that occur propagate at a speed proportional to the flow - electromagnetic flow sensors, whereby a magnetic field is applied to the part of the pipe, resulting in a potential difference proportional to the flow perpendicular to the flux lines. The physical principle of operation is Faraday's law on electromagnetic induction.
    Of these sensors, the ultrasonic flow sensor is preferred because it can achieve higher accuracy over a larger flow range. Swirl flow sensors are slightly less preferred because the measuring principle requires a minimal medium flow to induce vortices and because the obstruction for inducing the vortices causes a slight pressure drop. Single-magnetic sensors are also slightly less preferred because the applicability is limited to media with electrical conductivity, even though they are very suitable for sanitary applications because drinking water is electrically conductive.
    In the system of the invention, the flow sensor output is an electrical signal (analog or digital), which has the advantage that it facilitates the evaluation of the measured flow with the set flow, which leads to a faster reaction time compared to a mechanical system such as the system according to the state of the art with a variable pressure loss.
    In the system of the invention, the controller makes an evaluation of the flow level, Le. it directly compares the measured flow (the output signal from the flow sensor) with the set flow (possibly derived from a setting).
    This can also contribute to a faster reaction time compared to prior art systems, for example prior art systems in which energy consumption is evaluated to control the medium flow.
    In the system according to the invention the flow sensor is arranged outside, preferably at a distance from, the flow chamber of the valve control system, so that influence of the shape of the flow chamber, or other characteristics of the valve control system pp can prevent the flow measurement to become. As a result, the use of characteristic values, for example the characteristic curve of the controllable valve, can be avoided when "controlling the valve. Consequently, the control can be really pressure independent. Furthermore, the need for calibration of the system before use can be avoided. As a result, the flow control system can be used in combination with a wide range of different control valves or valve control systems.
    An advantage of the flow control system according to the present invention is that the flow control system can be used to compensate for large pressure differences. The pressure difference that can be compensated is only limited to the extent to which the adjustable valve can be opened or closed.
    The valve control system is preferably constructed so that it has an equiprocentual characteristic curve, so that the controllable valve is more sensitive at low flow rates than at higher flow rates. This equiprocentual characteristic curve can be achieved either by designing the shape of the components that constitute the controllable valve or by the structure of the actuator that drives one or more of these components to adjust the position of the valve. The actuator may be constructed, for example, to achieve a relatively larger movement in the first range starting from 0% opening of the valve and a smaller relative movement in a second range above a given opening of the valve. It was found that the combination of a flow sensor of the type described above and an equiprocentual characteristic curve can lead to a very accurate and widely applicable flow control system.
    In a preferred embodiment, the flow sensor is provided for the flow chamber. Because the medium for the controllable valve is less disturbed by the controllable valve than the medium behind the controllable valve, the sensor can usually be positioned closer to the controllable valve than in the case with a sensor positioned behind the controllable valve. Consequently, a more compact system can be obtained.
    In another preferred embodiment, the flow sensor is provided behind the flow chamber. In order to minimize disturbance of the measurement due to flow fluctuations caused by the controllable valve, the first flow measuring device in this case is preferably placed at a distance from the controllable valve by at least a rest portion of predetermined length. The predetermined length depends on a number of factors, namely the diameter of the pipe, the pressure, the flow, ...
    The flow sensor can be positioned before or after (in the case of a closed system) the at least one consumer device. Positioning the flow sensor after the at least one consumer device can result in better long-term operation of the sensor, because the sensor works at a lower temperature. In addition, by positioning the flow sensor after the consumer device, the sensor can be used to derive the amount of energy supplied by simply combining a measurement of the temperature in the discharge line with a (known) temperature of the medium in the supply line . Positioning the flow sensor in the supply line of the system has the advantage that disturbance of the measurements due to flow fluctuations caused by the consumer device can be avoided even if the flow sensor is placed close to the consumer device.
    In a preferred embodiment, the sensor is an electronic sensor, more preferably an electronic flow measuring cell. Such a sensor is preferred because it can further reduce the response time of the flow control system.
    In a preferred embodiment, the flow control system comprises a communication link to a central unit, so that certain measured and derived values, such as for example the current medium flow rate or a calculated consumption, can be communicated to the central unit at any time. Alternatively, a decentralized reading unit associated with each consumer device can also be used to provide user information to the user.
    The value representative of the set medium flow rate can be introduced into the controller by any means deemed suitable by the person skilled in the art, such as for example by an external analogue signal, by a digital signal or by a wireless signal. The set medium flow rate can also be a factory setting, as well as other parameters of the controller, such as for example a maximum speed of the flowing medium.
    The set medium flow rate can be entered directly or communicated by the consumer to the controller. The consumer can also insert or communicate a temperature or pressure value of the controller corresponding to the desired medium flow rate. In heat exchange applications, the set medium flow rate will usually be equal to the desired medium flow rate required to reach a certain temperature in the chamber.
    This set medium flow rate can be set decentrally, individually for each consumer / consumer device, or centrally, for each of the consumer / consumer devices simultaneously.
    The set medium flow rate corresponds to the desired medium flow rate and varies between 0 and 100% Vn0m, where Vn0m is the maximum medium flow for a specific control valve. It is preferably possible to limit the range of possible medium flow rates between Vmin and Vmax where Vmin is greater than 0 and Vmax is less than Vn0m.
    The drive unit can be any type of drive unit known to those skilled in the art, for example a motor. The controller will compare the current medium flow received from the sensor with the set medium flow, and generate a control signal. This control signal is communicated to the drive unit, which adjusts the controllable valve until the current medium flow rate is equal to the set medium flow rate.
    The flow control system according to the invention can control a medium flow, but can additionally be used to determine and / or control other variables. As an example, but not limited to, the flow control system can be used, for example, to control the speed of the medium flowing through a portion of the conduit so that it does not, for example, exceed a given value to prevent noise. Another example is to determine the heat that is supplied to the room by the consumer device, i.e. the energy consumption, from the current flow measurement and an additional medium temperature measurement. This energy can then be visualized locally or centrally.
    The different components of the flow control system according to the invention can form a single unit or two or more different units;
    The invention will be further illustrated by means of the following description and the accompanying drawings.
    Figures 1-13 and 16 show detailed views of various embodiments of the flow control system according to the invention.
    Figures 14 and 15 show cross-sections of preferred embodiments of a two-way valve and a three-way valve for use in flow control systems according to the invention, respectively.
    Figure 1 shows a flow control system associated with a consumer device 7, in this case a heat exchange system, provided in a pipe portion 6 of a pipe system. The conduit portion 6 of the conduit system is provided for distributing a medium from a common source (not shown) to a plurality of consumer devices. The flow control system comprises a flow sensor 1, a controller 2 and a valve control system 3, 4. The sensor 1 is provided for measuring a current medium flow through the part of the pipe 6 and for generating an electrical signal indicative of the measured current medium flow rate. The controller 2 is in communicative communication with the flow sensor 1 and is provided for evaluating the electrical signal indicative of the measured current medium flow rate with a value representative of a set medium flow rate and generating a control signal based on this evaluation. The set medium flow rate is directly or indirectly entered into the controller, for example by a user or a central control unit. The set medium flow rate can for example be derived from a desired temperature setting. The valve control system 3, 4 is in communicative communication with the controller 2 and comprises a flow chamber 11 (see figures 14 and 15) with an adjustable valve 12, with which the flow through the part of the line can be adjusted. The valve control system 3, 4 is provided for controlling the controllable valve 12 in response to the control signal from the controller 2. This allows the controller to control the flow in the portion of the line 6 to a set medium by means of the valve control system flow rate.
    In the embodiment shown in Figure 1, a flow sensor is provided for the valve control system 3,4, and for the heat exchange system 7 with which the flow control system is associated. Alternatively, the flow sensor 1 can also be provided behind the flow control system 3, 4 and for the heat exchange system 7, as shown in figure 2. In this case, the flow sensor 1 is separated from the flow chamber 11 by at least one rest section 13 of a predetermined length for attenuating the swirl in the medium caused by the controllable valve 12. The flow sensor can further be provided behind the heat exchange system 7 as shown in a preferred embodiment shown in figure 16.
    In Figures 1, 2 and 16, the controllable valve forms part of a flow control valve 4, which together with a drive unit forms the valve control system. In Figures 1 and 2, the flow control valve is a two-way valve. In the embodiments shown in Figures 3-10, which will be described below, a three-way flow control valve is used. The controllable valve and the drive unit can be designed in a different way as deemed suitable by the person skilled in the art.
    The flow sensor 1 is a flow sensor with a static measuring principle, which means that moving parts such as, for example, a turbine are avoided. The static measuring principle is preferred because it has been found that moving parts can lead to inaccurate measurements and require frequent maintenance. The measuring principle of the flow sensor 1 is not based on a moving part that is driven by a flowing medium, for example ultrasonic waves from ultrasonic transducers (ultrasonic flow sensor), swirling vortices induced by an obstruction placed in the flow path (swirl sensor) ). Of these types of sensors, the ultrasonic flow sensor is preferred because it can achieve high accuracy over a wide range.
    The valve control system 3, 4 is preferably constructed so that it has an equiprocentual characteristic curve, so that the controllable valve is more sensitive at low flow rates than at higher flow rates. This equiprocentual characteristic curve can be obtained either by shaping the moving part 14, with which the valve is controlled, or by means of a drive in the drive unit that moves the movable part, which can be constructed, for example, to cause greater movement in a first range starting from 0% aperture at the valve and a smaller movement in a second range above a certain aperture of the valve. In the two-way and three-way control valves shown in Figures 14 and 15, an equiprocentual characteristic curve is provided by the shape of the moving parts 14.
    In the preferred embodiments shown in Figures 3-10, the valve control system comprises a three-way control valve 4 positioned at an intersection of a supply line 15 of the system of lines provided for supplying the medium from a common source to one or more of the consumer devices 7, in this case back a heat exchange system, and a bypass line 16 which bypasses the consumer device 7, so that a part of the medium flow can be immediately transferred to the return line 17 back to the common source and not through it heat exchange system can flow. As such, the three-way valve defines a first flow path for the medium, from the common source through the valve to the consumer device to the return line, and a second flow path from the common source through the valve and the bypass line to the return line. Alternatively, the three-way valve can also be provided at the end of the bypass line, i.e. at the intersection between the bypass line and the return line, where the flows through the bypass line and the consumer device come back together.
    Figure 3 shows a preferred embodiment of the flow control system that comprises two flow sensors, a first flow sensor 1 for the three-way valve 4 and a second flow sensor 5 between the valve and the heat exchange system. The second flow sensor 5 is preferably also one with a static measuring principle based on a wave propagating in the medium, preferably of the same type as the first sensor. The first sensor measures the total flow through the supply line, the second sensor measures the part that flows through the heat exchange system. Both sensors are communicatively connected to the controller 2, which controls the setting of the adjustable valve by evaluating the output signals from the sensors and the set medium flow rate.
    Figure 4 shows a flow control system that is comparable to the system shown in Figure 3, but in which the second sensor 5 is provided along the bypass line.
    Figure 5 shows a flow control system that is comparable to the system shown in Figure 3, but wherein the first flow sensor 1 is provided along the bypass line at a position behind the intersection between the bypass line and the return line.
    Figure 6 shows a flow control system comprising a three-way control valve, with only one flow sensor 1 between the valve 4 and the consumer device 7. Consequently, the system can comprise an additional application, wherein the flow control system is used to, software-wise, the characteristic curve of the three-way control valve. Such a system can be used, for example, to change a linear characteristic curve of the controllable valve into a non-linear characteristic curve or vice versa. This software correction of the characteristic curve can also be used in the systems shown in figures 1-2 in which a two-way valve is used.
    Figure 7 shows another application of the flow control system according to the present invention. The flow control system shown in Fig. 7 comprises a flow sensor 1 along the supply line at a position between the three-way valve: 4 and the heat exchange system 7. The flow control system further comprises a first and a second temperature sensor 5, 6 for measuring the temperature of the medium at the input and the output of the consumer device. These three measurements, i.e. the current medium flow rate, the input and output temperature, can then be transferred to a central unit 18, which can calculate the amount of energy exchanged with the heat exchange system.
    Figure 8 shows a flow control system similar to that of Figure 7, but in which the temperature measurements and the actual medium flow are first transferred to the controller 2, which then diverts the amount of exchanged energy through the consumer device. These values can then be transferred to a central reading unit 18.
    Figure 9 shows a flow control system similar to that of Figures 7 and 8, where the flow sensor, the first temperature sensor and the controller are placed at the input of the heat exchange system 7 and integrated in one and the same unit 19. The central unit communicates here a desired temperature setting at the controller 2 of the unit 19, which subsequently determines the set medium flow rate from the desired temperature setting and the measurement of the first temperature sensor 5. The flow sensor 1 provides feedback if the current medium flow rate corresponds to the set medium flow rate. The second temperature sensor provided at the output of the consumer device communicates the output temperature at the central unit 18.
    Figure 10 shows a flow control system analogous to that of Figure 9, but wherein the integrated unit 19, which comprises a flow sensor 1, the first temperature sensor 5 and the controller 2, is positioned along the return line 17 at a position behind the heat exchange system 7 and for the bypass line 16.
    Figure 11 shows a flow control system in which the flow sensor 1 is a combined flow measuring device (part A) and a temperature sensor (part B). Assuming that the temperature of the medium along the supply line remains substantially constant, a measurement of the temperature on the output side of the heat exchange system allows to determine the amount of energy exchanged by the heat exchange system. The amount of energy exchanged can result in cooling, i.e., energy absorption by the consumer device, or heating, i.e., energy delivery by the consumer device.
    Figure 12 shows a flow control system similar to that of Figure 3, wherein two two-way control valves 4, 7 replace the three-way control valve. The two two-way control valves shown in Figure 12 are each controlled by a separate drive unit 3, 8 controlled by a common controller 2.
    Figure 13 shows a flow control system similar to that of Figure 12, wherein the first flow sensor is moved from the supply line 15 to the bypass line 16, after the two-way valve 7.
    The various components of the flow control system are shown as individual components in Figures 1-13. However, it is possible that one or more of the integrated wine components are in the same housing. For example, it is possible to integrate the controller and the drive unit or the drive unit and the valve control system or any other combination deemed suitable by those skilled in the art.
    The valve control system of the present invention, embodiments of which are shown in Figures 1-13, can also be used in a number of different applications.
    As an example, but not limited to this, the flow control system according to the invention can be used in a central heating system to control the flow of fluid through a number of heat exchangers individually, for example to compensate for pressure changes in the different pipes. An advantage of the flow control system of the invention is that the same flow control system can be used throughout the central heating system, without the need for calibration.
    The flow control system can also be used in sanitary applications, where water is distributed from a common source to a multitude of taps. The flow control system can be used to control the water flow to and through the taps in such a way that it is independent of pressure variations. When one or more taps are closed, the pressure of the water that passes through the system of pipes at the location of the other taps will increase. Consequently, the current water flow rate measured by the sensor of the flow control system will increase, as a result of which a difference between the current flow rate and the set medium flow rate is detected. This results in a control signal that is communicated to the controller of the valve control system of the flow control system, as a result of which the controllable valve of the corresponding water tap will be closed to a certain extent until the current medium flow rate corresponds to the set medium flow rate.
    Another way to use the flow control system in sanitary applications is to use it to control water hygiene when controlling the flushing process. When a faucet is not used for a certain period of time, contamination can accumulate inside the faucet and the adjacent pipe portion of the pipe system, which of course is not desirable. It is known to provide the valve control system with a tap with a timer and to distribute the water through the system of pipes at regular intervals in order to prevent accumulated contamination within the system of pipes and the tap. However, the current flushing processes do not provide for an accurate and normalized flushing process, since the amount of water used for the flushing process is dependent on the actual water pressure. The flow control system of this invention can be used to normalize the amount of water used during the flushing process by controlling the water flow rate of the water during the flushing process to an adjusted water flow rate. This can be understood as follows. The flow control system is preferably provided with a timer that at any time measures the water circulation through a certain part of the system of pipes. From the moment that there is no or insufficient water consumption, the flow control system will open the controllable valve and flush that specific pipe section. . The amount of water used during the flushing process is measured and limited by the flow control system. Preferably, not only the flow rate of the flushing water is controlled, but also the temperature of the flushing water is controlled. By controlling the temperature and flow of the flushing water, the flow control system can provide an effective and normalized flushing process.
    The controllers 2 of the various embodiments described above can be provided with wireless telecommunication means for wirelessly communicating with a remote control unit, with which a user can, for example, adjust a desired temperature setting in the controller, or read out data stored in the controller such as for example the water or energy consumption in the associated consumer device.
    权利要求:
    Claims (18)
    [1]
    A central heating / cooling system and / or sanitary system, comprising: - a common source for distributing a medium; - a plurality of consumer devices spread over different floors of a building and connected to the common source via a system of pipes through which the medium is distributed; - at least one flow control system associated with at least one of the plurality of consumer devices for controlling a flow of the medium passing through a pipe portion of the pipe system, the flow control system comprising: o a flow sensor for measuring a current medium flow through the pipe section and the generation of an electrical signal indicative of the measured current medium flow o a controller in communicative connection with the flow sensor, the controller being provided for evaluating the electrical signal indicative of the measured current medium flow with a value representative of a set medium flow rate and generating a control signal based on that evaluation, and o a valve control system in communicative communication with the controller, the valve control system comprising a flow chamber with an adjustable valve in the conduit section, the valve control system is provided vo or adjusting the controllable valve in response to the control signal from the controller, characterized in that the flow sensor is arranged outside the flow chamber and has a static measuring principle based on a wave propagating in the medium and in that the valve control system has an equiprocentual characteristic curve.
    [2]
    A central heating / cooling system and / or sanitary system according to claim 1, characterized in that the flow sensor is selected from the group consisting of: ultrasonic flow sensor, vortex flow sensor, electromagnetic flow sensor.
    [3]
    A central heating / cooling system and / or plumbing system according to one of the claims 1-2, characterized in that the sensor is provided in the pipe section at a position for the valve control system.
    [4]
    A central heating / cooling system and / or sanitary system according to any one of claims 1-2, characterized in that the sensor is provided in the conduit section at a position behind the valve system of conduits and is separated therefrom by a rest section for weakening the swirl in the medium caused by the valve control system.
    [5]
    A central heating / cooling system and / or plumbing system according to one of the preceding claims, characterized in that the valve control system (3, 4) comprises a two-way valve.
    [6]
    A central heating / cooling system and / or sanitary system according to any one of the preceding claims, characterized in that the valve control system comprises a three-way valve placed at an intersection of a supply pipe of the system of pipes provided for supplying the medium from the common source to at least one of the consumer devices, and a bypass line for bypassing the at least one consumer device.
    [7]
    A central heating / cooling system and / or sanitary system according to claim 6, characterized in that the system further comprises a second sensor for measuring a second current medium flow rate from the three-way valve to the consumer device and generating a second electrical signal indicative of the second current medium flow rate, wherein the controller is in communication with the second flow sensor and is provided for evaluating the two electrical signal.
    [8]
    A central heating / cooling system and / or sanitary system according to claim 6, characterized in that the system further comprises a second sensor for measuring a second current medium flow rate through the bypass line and generating a second electrical signal indicative of the second actual measured medium flow rate, wherein the controller is in communication with the second flow sensor and is also provided for evaluating the second electrical signal.
    [9]
    A central heating / cooling system and / or sanitary system according to claims 7 or 8, characterized in that the first flow sensor is provided along a return line for merging the current through the bypass line and the current through the at least one consumer device.
    [10]
    A central heating / cooling system and / or sanitary system according to claim 6, characterized in that the flow sensor is provided between the three-way control valve and the consumer device.
    [11]
    A central heating / cooling system and / or sanitary system according to any one of the preceding claims, characterized in that the flow control system further comprises a first temperature sensor provided along the system of pipes at a position for the consumer device and provided for measuring a supply temperature of the medium that enters the consumer device.
    [12]
    A central heating / cooling system and / or sanitary system according to any one of the preceding claims, characterized in that the flow control system comprises a second temperature sensor provided along the system of pipes behind the consumer device and provided for measuring an outlet temperature of the medium which the consumer device.
    [13]
    A central heating / cooling system and / or sanitary system according to any of the preceding claims, characterized in that the flow control system further comprises a first pressure measuring device provided along the system with pipes at a position for the consumer device and provided for measuring, a first pressure of the medium entering the consumer device.
    [14]
    A central heating / cooling system and / or sanitary system according to any of the preceding claims, characterized in that the flow control system comprises a second pressure measuring device provided along the system of pipes at a position behind the consumer device and provided for measuring a second pressure of the medium leaving the consumer device.
    [15]
    A central heating / cooling system and / or sanitary system according to any one of the preceding claims, characterized in that the flow sensor is an electronic device that generates a digital value indicative of the current medium flow.
    [16]
    A central heating / cooling system and / or sanitary system according to any one of the preceding claims, characterized in that the flow control system further comprises a communicative link to a central unit.
    [17]
    A central heating / cooling system and / or sanitary system according to one of the preceding claims, characterized in that the flow control system is provided for calculating a consumption of the consumer device.
    [18]
    Use of a sanitary system according to one of the preceding claims in sanitary applications for periodically flushing the pipe section.
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    同族专利:
    公开号 | 公开日
    EP2706425B1|2020-09-23|
    US10394257B2|2019-08-27|
    DK2307938T3|2013-12-16|
    EP2307938B2|2020-09-23|
    ES2439003T3|2014-01-21|
    CN102124417A|2011-07-13|
    US20180067505A1|2018-03-08|
    US9823666B2|2017-11-21|
    EP2307938B1|2013-10-16|
    EP2307938A1|2011-04-13|
    EP3812870A1|2021-04-28|
    PT2307938E|2013-12-17|
    PL2307938T3|2014-02-28|
    CN102124417B|2014-12-17|
    WO2009156010A1|2009-12-30|
    US20110162742A1|2011-07-07|
    EP2706425A1|2014-03-12|
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    法律状态:
    2021-10-06| PD| Change of ownership|Owner name: BELPARTS GROUP N.V.; BE Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), MERGE; FORMER OWNER NAME: BELPARTS Effective date: 20210702 |
    优先权:
    申请号 | 申请日 | 专利标题
    BE200800354|2008-06-26|
    BE200800354|2008-06-26|
    PCT/EP2008/068188|WO2009156010A1|2008-06-26|2008-12-22|Flow control system|
    EP2008068188|2008-12-22|
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