• 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 control valve (2) for regulating fluid flow in an HVAC comprises a valve body (21) and a temperature sensor (25) which is configured to measure the temperature of a fluid (24) flowing within the control valve (2). The temperature sensor (25) is designed such that the temperature sensor (25) is essentially thermally decoupled from the valve body (21).
    公开号:CH715585A1
    申请号:CH01453/18
    申请日:2018-11-23
    公开日:2020-05-29
    发明作者:Keller Urs；Thuillard Marc
    申请人:Belimo Holding Ag；
    IPC主号:
    专利说明:

    TECHNICAL AREA
    The invention relates to a control valve for regulating a fluid flow in an HVAC system, the control valve comprising a valve body and a temperature sensor configured to measure the temperature of a fluid flowing in the control valve.
    BACKGROUND OF THE INVENTION
    [0002] Accurate measurement of the temperature of the fluid in an HVAC system plays an important role in controlling the HVAC system. For example, the heat flow emitted to the environment through a heat exchanger is typically determined by measuring the temperatures at the inlet and outlet of the heat exchanger. A precise measurement of the temperature is therefore advantageous for various control purposes in connection with the heat flow in the HVAC system. Furthermore, the precise knowledge of the temperature of the fluid is used to set control valves of an HVAC system in suitable valve positions in order to regulate the fluid flow.
    [0003] Therefore, various solutions for measuring the temperature of the fluid in an HVAC system have been proposed in the prior art.
    [0004] For example, WO 2006/014712 A2 describes a device and a method for determining the temperature of an operating fluid in an HVAC system. An integral temperature sensor, which is mounted within an actuator by an actuator-driven HVAC valve, detects the temperature of a valve body of the HVAC valve. The temperature of a fluid within the HVAC valve is determined by the temperature of the valve body. A processor within the actuator configures the actuator to operate in either a direct-acting mode or alternatively in a reverse-acting mode as a function of the temperature of the valve body as sensed by the integral temperature sensor. The actuator is designed for attachment to the HVAC valve in such a way that the temperature sensor is placed in operative thermal contact with the valve body by attaching the actuator to the HVAC valve.
    DE4232801 AI describes a valve for heating or air conditioning systems with a housing, a valve body which is designed in the interior of the valve and a temperature sensor which is inserted into the housing. The housing contains a recess with an opening that is accessible from the outside for simplified installation and for reasons of cost reduction. The recess is closed against the valve interior and the temperature sensor is arranged in the recess. The temperature sensor is therefore not in direct contact with the heat transfer medium.
    The various known solutions for measuring the temperature of the fluid in an HVAC system are limited in the accuracy and / or in the efficiency of the temperature determination.
    SUMMARY OF THE INVENTION
    It is an object of the invention to provide a control valve for regulating fluid flow in an HVAC system with a temperature sensor configured to measure the temperature of the fluid flowing in the control valve, which is at least partially prior art improves and avoids at least some of the disadvantages of the prior art.
    According to the present invention, this object is achieved by the features of the independent claim. In addition, further advantageous embodiments follow from the dependent claims and the description.
    According to one aspect of the invention, the object is achieved in particular by a control valve for regulating a fluid flow in an HVAC system, the control valve comprising a valve body and a temperature sensor that is configured to measure the temperature of a fluid that is in flows to the control valve, the temperature sensor being designed such that the temperature sensor is essentially thermally decoupled from the valve body.
    The design of the temperature sensor provides the advantage that a direct thermal coupling between the temperature sensor and the valve body is avoided. This allows the accuracy of the temperature measurement of the fluid to be increased, since the influence of the valve body on the temperature measurement can be minimized.
    In particular, the temperature sensor can be substantially thermally decoupled from the valve body, so that a thermal coupling of the temperature sensor can only be established via the fluid that flows within the control valve. Apart from the fluid, which can establish an indirect thermal coupling between the temperature sensor and the valve body, the temperature sensor can therefore be thermally decoupled from the valve body.
    In the context of the present invention, the terms "thermally insulating", "thermally decoupled" and "thermally conductive", "thermally coupled" are intended to describe the respective areas of thermal conductivity which are known to the person skilled in the art to be thermally insulating and to characterize thermally conductive components or a thermal coupling and decoupling. In particular, the term “essentially thermally decoupled” is understood to mean that any remaining thermal conductivity from a thermally insulating area can be neglected.
    In one embodiment, the temperature sensor is mounted in the control valve by means of an at least partially thermally insulating fastening element, the contact between the fastening element and the valve body being established via a thermally insulating region of the fastening element.
    Typically, the valve body comprises a valve housing with a wall and a valve regulating element.
    The fastening element can be partially thermally insulating, since the fastening element comprises a thermally insulating area and a thermally conductive area. Alternatively, the fastening element can be formed entirely from a thermally insulating material. The thermally insulating area of the fastening element, via which the contact between the fastening element and the valve body is established, ensures that a direct thermal coupling between the temperature sensor and the valve body is avoided.
    In one embodiment, the fastener is mounted on or within a wall of the valve body.
    In one embodiment, the valve body comprises a valve regulating element and the fastening element is mounted on or within the valve regulating element.
    In one embodiment, the fastener is mounted on or within a shaft of the valve regulating element.
    In variants, the fastening element is mounted upstream of the valve regulating element or downstream of the valve regulating element.
    In one embodiment, the control valve is a ball valve and the valve regulating element is a ball with a through hole.
    In one embodiment, the fastening element comprises an adhesive, a foam, a plastic, and / or a ceramic.
    In one embodiment, the fastener includes a protective tube configured to receive the temperature sensor.
    The thermowell provides the advantage of quick replacement of a temperature sensor without the need to open the valve. This is particularly advantageous if the temperature sensor breaks or if another type of temperature sensor is required.
    In one embodiment, the protective tube comprises a thermally conductive head which is designed in an interior of the valve body, the head being thermally coupled to the temperature sensor.
    The protective tube advantageously comprises a thermally insulating region, which can be the part of the protective tube which is proximal to the opening of the protective tube. The protective tube can be mounted within a wall of the valve body, so that only the thermally insulating region of the protective tube touches the valve body and thermal coupling of the temperature sensor to the valve body via the protective tube is avoided.
    In one embodiment, the temperature sensor is designed to be in direct contact with the fluid that flows within the control valve.
    The direct contact of the temperature sensor with the fluid flowing within the control valve provides the advantage of a quick measurement of the temperature because the influence of the heat capacity of any component located between the temperature sensor and the fluid, e.g. a socket or a recess can be avoided. Furthermore, the accuracy of the temperature measurement can be increased.
    In one embodiment, the control valve comprises a thermally insulating bushing that is configured to accommodate cabling that is connected to a sensor unit of the temperature sensor.
    Usually the temperature sensor comprises a sensor unit, e.g. a thermistor or a temperature sensor, and an electronic unit for reading and / or for amplification. The sensor unit and the electronic unit can be spatially separated with a wiring that connects the sensor unit to the electronic unit. The thermally insulating bushing provides the advantage that the influence of a thermal coupling between the wiring and the valve body can be reduced, which is particularly advantageous in the case that the signal amplification and / or the reading is carried out externally, i.e. not directly at the position of the sensor unit.
    In one embodiment, the thermally insulating bushing is arranged within a wall of the valve body or within a shaft of the valve regulating element.
    [0031] In one embodiment, the temperature sensor comprises a circuit configured for wireless transmission of temperature information (data).
    Wireless transmission of temperature information (data) is advantageous because thermal effects from cabling, e.g. to connect the sensor unit with the electronic unit can be avoided.
    [0033] In one embodiment, an area of the valve body is thermally insulating.
    A thermally insulating area of the valve body provides the advantage that thermal effects of the environment can be reduced to the measured temperature. The fastening element is advantageously mounted inside or on the thermally insulating region of the wall of the valve body.
    [0035] In one embodiment, the valve body is thermally insulating.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The present invention will be explained in more detail by way of example with reference to the drawings, in which<tb> <SEP> FIG. 1 shows a sectional side view of a first embodiment of a control valve;<tb> <SEP> FIG. 2 shows a sectional side view of a second embodiment of a control valve;<tb> <SEP> FIG. 3 shows a sectional side view of a third embodiment of a control valve;<tb> <SEP> FIG. 4 shows a sectional side view of a fourth embodiment of a control valve;<tb> <SEP> Figure 5 shows a sectional side view of a fifth embodiment of a control valve.
    DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
    Figure 1 shows a schematic sectional side view of a first embodiment of a control valve 1, which comprises a valve body 11 with a valve housing 10 and a valve regulating element 12. The valve regulating element 12 is adjustable between a closed position and an open position for the fluid flow 14. In the embodiment shown, the valve regulating element 12 is rotatable about an axis of rotation 13 between the closed position and the open position. The valve regulating element 12 can be a ball with a through bore and the control valve 1 can be a ball valve. In other embodiments, the control valve can be, for example, a throttle valve, a shut-off valve, etc. The control valve 1 further comprises a temperature sensor 15 which is mounted on the wall 111 of the valve body 11 by means of a thermally insulating fastening means 16. The temperature sensor 15 is therefore designed such that the temperature sensor 15 is essentially thermally decoupled from the valve body 11. The fastener 16 is formed from a thermally insulating material, such as e.g. an adhesive, a foam, a plastic or a ceramic. In Figure 1, only a part of the temperature sensor 15 is shown, which is indicated schematically by the two wavy lines at the rear end of the temperature sensor 15. The temperature sensor 15 comprises an angled front part (sensor unit) which extends into the flow 14 for detecting the temperature. The temperature sensor 15 is designed upstream of the valve regulating element 12. In other embodiments, the temperature sensor 15 can be arranged upstream of the valve regulating element 12 or can be arranged within the valve regulating element 12.
    In one embodiment, the temperature sensor 15 comprises a circuit configured for wireless transmission of temperature data (temperature information) to a processing unit, e.g. an electronic unit 252, which comprises an electronic circuit as shown in FIG. 2 and described in the context of FIG. 2, and / or another (separate, external) electronic device, in particular a mobile communication terminal, such as e.g. a mobile radio telephone, a smartwatch, a tablet or the like. For example, the circuit for wireless transmission includes an RFID (Radio Frequency Identifier) communication circuit or a BLE (Bluetooth Low Energy) communication circuit or other electronic communication circuit for wireless data transmission over a close range, e.g. up to one, two, five or ten meters, depending on the application and configuration.
    Figure 2 shows a schematic side view of a second embodiment of a control valve 2, which comprises a valve body 21 with a valve housing 20 and a valve regulating element 22. The valve regulating element 22 is adjustable between a closed position and an open position for the fluid flow 24. The control valve 2 further comprises a temperature sensor 25 which is mounted on the wall 211 of the valve body 21 by means of a thermally insulating fastening element 26. The thermally insulating fastening element 26 can comprise regions which are formed from a thermally conductive material, as long as the contact between the fastening element 26 and the valve body 21 or the control valve 2 is established via a thermally insulating region of the fastening element 26, so that the temperature sensor 25 is essentially thermally decoupled from the valve body 21. The temperature sensor 25 comprises a sensor unit 251, which forms an angled front area and extends into the flow 24. The sensor unit 251 can comprise a thermistor, a temperature sensor, etc. The temperature sensor 25 further comprises an electronic unit 252, which comprises an electronic circuit for amplification and / or reading out and which is spatially separated from the sensor unit 251, as is indicated schematically by the two wavy lines. The sensor unit 251 is connected to the electronic unit 252 via a wiring 253. The control valve 2 comprises a thermally insulating bushing 27, which is designed within the wall 211 of the valve body 21 and through which the wiring 253 is guided. In other embodiments, the thermally insulating feedthrough could also be designed in a shaft of the valve regulating element (not shown in FIG. 2), for example if the temperature sensor 25 is designed inside the valve regulating element. The thermally insulating bushing 27 is formed from a thermally insulating material, such as e.g. an adhesive, a foam, a plastic or a ceramic.
    In other embodiments, the wall of the valve body can be formed from a thermally insulating material, so that a separate thermally insulating bushing may not be necessary. In such a case, it may also not be necessary to require a thermally insulating fastening element, since the wall of the valve body is thermally insulating.
    Figure 3 shows a schematic side view of a third embodiment of a control valve which comprises a valve body 31 with a valve housing 30 and a valve regulating element 32 which regulates the fluid flow 34. The control valve 3 further comprises a temperature sensor 35 which is mounted in the control valve 3 by means of a thermally insulating fastening element 36. The fastener 36 is mounted within the wall 311 of the valve body 31. The temperature sensor 35 is not angled in the front part and extends into the flow 34. The temperature sensor 35 is designed downstream of the valve regulating element 32. In other embodiments, the temperature sensor 35 may be arranged upstream of the valve regulating element 32 or may be arranged within the valve regulating element 32.
    Figure 4 shows a schematic side view of a fourth embodiment of a control valve 3, which comprises a valve body 41 with a valve housing 40 and a valve regulating element 42 for regulating the fluid flow 44. The control valve 4 includes a fastener that includes a protective tube 46 that is configured to receive a temperature sensor 45 and is mounted in a bore in the wall 411 of the valve body 41. The protective tube 46 comprises a thermally insulating upper region 462 which contacts the wall 411 of the valve body 41 and a lower region 461 which forms a thermally conductive head which is designed in the interior of the valve body 41. The lower region of the head 461 is thermally coupled to the temperature sensor 45, so that the temperature sensor 45 can measure the temperature of the fluid 44. Due to the protective tube 46, the temperature sensor 45 can be easily replaced without having to open the control valve 4.
    Figure 5 shows a schematic side view of a fifth embodiment of a control valve 5, which comprises a valve body 51 with a valve housing 50 and a valve regulating element 52 for regulating the fluid flow 54. The control valve 5 comprises a thermally insulating fastening element 56 which is mounted inside the valve regulating element 52, in particular inside a shaft 521 of the valve regulating element 52. The front part of the temperature sensor 55 is arranged inside the valve regulating element 55. For example, for a ball valve, the front part of the temperature sensor 55 can extend into the through bore of the ball and measure the temperature of the fluid flowing through the bore of the ball.
    As was described in the context of Figures 1 and 2 and also in the embodiments of Figures 3, 4 and 5, the sensor unit of the temperature sensor is connected to a processing unit via a cable connection, e.g. an electronic wiring or a cable, and / or via an electronic circuit for wireless communication.
    REFERENCE SIGN LIST
    1,2,3,4,5 control valve 20,30,40,50 valve housing 2131,41,51 valve body 111,211,311,411,511 wall 22,32,42,52 valve regulating element 521 shaft 13 axis of rotation 14, 24, 34, 44, 54 Fluid flow 15, 25, 35, 45, 55 Temperature sensor 251 Sensor unit 252 Electronic unit 253 Wiring 16, 26, 36, 46, 56 Fastening element 27 Bushing 461 Thermally conductive head 462 Upper area
    权利要求:
    Claims (13)
    [1]
    1. Control valve (1, 2, 3, 4, 5) for regulating a fluid flow in an HVAC system, the control valve (1, 2, 3, 4, 5) having a valve body (11, 21, 31, 41, 51 ) and a temperature sensor (15, 25, 35, 45, 55) that is configured to measure the temperature of a fluid (14, 24, 34, 44, 54) that is in the control valve (1, 2, 3 , 4, 5) flows, the temperature sensor (15, 25, 35, 45, 55) being designed such that the temperature sensor (15, 25, 35, 45, 55) is essentially thermally decoupled from the valve body (11, 21 , 31, 41, 51).
    [2]
    2. Control valve (1, 2, 3, 4, 5) according to claim 1, wherein the temperature sensor (15, 25, 35, 45, 55) in the control valve (1, 2, 3, 4, 5) by means of an at least partially thermally insulating fastener (16, 26, 36, 46, 56) is mounted, the contact between the fastener (16, 26, 36, 46, 56) and the valve body (11, 21, 31, 41, 51) via a thermally insulating region of the fastening element (16, 26, 36, 46, 56) is produced.
    [3]
    3. Control valve (1, 2, 3, 4) according to claim 2, wherein the fastening element (16, 26, 36, 46) on or within a wall (111, 211, 311, 411) of the valve body (11, 21, 31 , 41) is mounted.
    [4]
    4. Control valve according to claim 2, wherein the valve body (51) comprises a valve regulating element (52) and the fastening element (56) is mounted on or within the valve regulating element (52).
    [5]
    5. Control valve according to one of claims 2 to 4, wherein the fastening element comprises at least one of the following: an adhesive, a foam, a plastic, and a ceramic.
    [6]
    6. Control valve (4) according to one of claims 2 to 4, wherein the fastening element comprises a protective tube (46) which is configured to receive the temperature sensor (45).
    [7]
    7. Control valve (4) according to claim 6, wherein the protective tube (46) comprises a thermally conductive head (461) which is arranged in an interior of the valve body (41), the head (461) to the temperature sensor (45) thermally is coupled.
    [8]
    8. control valve (1, 2, 3, 5) according to one of claims 1 to 5, wherein the temperature sensor (15, 25, 35, 55) is designed to be in direct contact with the fluid (14, 24, 34, 44 , 54) that flows within the control valve (11, 21, 31, 51).
    [9]
    9. Control valve (2) according to one of claims 1 to 8, wherein the control valve (2) comprises a thermally insulating bushing (27) which is configured to receive a wiring (253) with a sensor unit (251) of the temperature sensor (25) is connected.
    [10]
    10. Control valve (2) according to claim 9, wherein the thermally insulating bushing (27) is arranged within a wall (211) of the valve body (21) or within a shaft of the valve regulating element.
    [11]
    11. Control valve according to one of claims 1 to 8, wherein the temperature sensor comprises a circuit which is configured for wireless transmission of temperature information.
    [12]
    12. Control valve (2, 3, 5) according to one of claims 1 to 11, wherein an area of the valve body (21, 31, 51) is thermally insulating.
    [13]
    13. Control valve according to one of claims 1 to 12, wherein the valve body is thermally insulating.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102019131606A1|2020-05-28|
    CH715585B1|2021-12-30|
    US20200166959A1|2020-05-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01453/18A|CH715585B1|2018-11-23|2018-11-23|control valve.|CH01453/18A| CH715585B1|2018-11-23|2018-11-23|control valve.|
    US16/691,758| US20200166959A1|2018-11-23|2019-11-22|Control valve|
    DE102019131606.5A| DE102019131606A1|2018-11-23|2019-11-22|Control valve|
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