Transmission and distribution module of capillary radiation system

Abstract

The utility model aims to provide a capillary radiation system transmission and distribution module which comprises a plate heat exchanger, a water collecting and distributing device, a primary side circulating pipeline and a secondary side circulating pipeline connected with the plate heat exchanger and the water collecting and distributing device, and the secondary side circulating pipeline comprises a secondary side water return pipeline and a secondary side water supply pipeline. And the secondary side water return pipeline is provided with a secondary side circulating pump and an expansion tank. The capillary radiation system transmission and distribution module further comprises a differential pressure bypass valve, one end of the differential pressure bypass valve is connected with the secondary side water supply pipeline, and the other end of the differential pressure bypass valve is connected with the secondary side water return pipeline. And the pressure difference bypass valve is additionally arranged, so that the pressure difference of the two paths can be quickly reduced, the pressure difference of the whole capillary loop is stabilized in a controllable range, the system performance reduction or damage caused by overlarge pressure difference is prevented, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of a capillary radiation system, and more specifically, to the field of a distribution device for a capillary radiation system. Background Art

[0002] Today, air conditioning systems in modern buildings must meet very high demands. Conventional air conditioning systems such as ventilation and static heating can hardly achieve the requirements of optimal thermal comfort, minimum space and energy saving at the same time. Capillary tubes are a new technology in this field, which can automatically adjust the heat exchange rate of the environment to the surrounding environment. The capillary tubes with water as the heat medium are made of elastic plastic and are laid directly under the surface of the room envelope. The ceiling, floor and walls of the room will become very warm and comfortable. In this way, the energy transfer between the user and the room surface is carried out by radiation. Radiation is the adjustment of the thermal balance between objects under natural conditions. Research and a large number of practical cases have proved that for this reason, capillary cooling and heating systems make people feel more comfortable and thus have higher working efficiency.

[0003] A high-quality system must have a high-quality configuration guarantee that integrates heat exchange and water distribution. For example, the application publication number is: CN 104964491 A, which discloses a one-way capillary system heat exchange and water distribution device, which is connected to the primary side main engine through a plate heat exchanger to form a primary side closed circulation pipeline, which is used to heat the summer temperature water coming out of the primary side main engine into water with the required temperature at the end. The other end of the plate heat exchanger is connected to the secondary side circulation pipeline, and is connected to the capillary interface through a water collector and distributor to form a secondary side closed circulation system. The secondary side circulation pipeline includes a secondary side return water pipeline and a secondary side water supply pipeline, wherein the secondary side circulation pump and expansion tank are respectively installed on the secondary side return water pipeline to provide circulation power for the secondary side water system and stabilize the secondary side water system pressure.

[0004] However, the overall complexity of the capillary system and the temperature changes in the local path can easily lead to an unbalanced pressure difference in the entire pipeline, thereby causing damage to components in the system and affecting the normal operation of the device. Utility Model Content

[0005] The utility model aims to provide a capillary radiation system distribution module to solve the problem that the overall pipeline of the capillary system is relatively complex and the temperature change of the local path easily leads to an unbalanced pressure difference of the entire pipeline, thereby extending the service life of the device.

[0006] The utility model is realized through the following technical solutions:

[0007] A capillary radiation system distribution module comprises a plate heat exchanger, a manifold, a primary circulation pipe and a secondary circulation pipe connected to the plate heat exchanger and the manifold, wherein the secondary circulation pipe comprises a secondary return pipe and a secondary water supply pipe, and the secondary return pipe is provided with a secondary circulation pump and an expansion tank. The capillary radiation system distribution module further comprises a pressure differential bypass valve, wherein one end of the pressure differential bypass valve is connected to the secondary water supply pipe, and the other end is connected to the secondary return pipe.

[0008] The pressure differential bypass valve is a mature regulating valve, and its function is to regulate and control the flow of refrigerant in the system. The pressure differential bypass valve is connected between the secondary side water supply pipe connection and the secondary side water return pipe. When the pressure difference between the two routes increases to the limit value, the pressure difference between the two routes can be reduced quickly by controlling the pressure differential bypass valve, ensuring that the pressure difference of the entire capillary loop is stable within a controllable range. This prevents system performance degradation or damage caused by excessive pressure difference and extends the service life of the device.

[0009] As a preferred embodiment of the present invention, the secondary side water supply pipe and the secondary side water return pipe are both connected with a thermometer and a pressure gauge.

[0010] Since the capillary loop is long, the temperature difference and pressure difference between the water supply end and the water return end are relatively large. Therefore, the secondary water supply pipe and the secondary water return pipe are both connected with a thermometer and a pressure gauge, so that the pressure stabilization of the capillary loop can be more comprehensively understood, which helps to adjust the heating and cooling more accurately.

[0011] As a preferred embodiment of the present invention, a filter is provided on the secondary water return pipe.

[0012] The filter can intercept impurities carried in the water, such as rust, sand, microorganisms, etc., to prevent these impurities from accumulating in the capillary tube, thereby ensuring the cleanliness of the system. At the same time, adding the filter to the secondary return water pipe can also protect the capillary tube. Because the capillary tube in the capillary radiation system is very small and easily damaged by particulate matter, the filter can effectively protect the capillary tube and extend its service life.

[0013] As a preferred embodiment of the present invention, the other end of the plate heat exchanger is connected to a primary-side main engine, and an electric valve is provided between the plate heat exchanger and the primary-side main engine.

[0014] The water in the primary side main engine flows into the plate heat exchanger through the electric valve to form a closed loop, so that the water in the secondary side circulation pipeline exchanges heat with the primary side in the plate heat exchanger to adjust the temperature rise and fall in the secondary side circulation pipeline. When the temperature in the secondary side circulation pipeline reaches the set temperature, the electric valve can be closed to control the secondary side circulation pipeline from exchanging heat with the primary side.

[0015] As a preferred embodiment of the present invention, the capillary radiation system distribution module further includes a controller for controlling the electric valve and the secondary side circulation pump, and the controller is electrically connected to the thermometer and pressure gauge.

[0016] The controller is electrically connected to the thermometer and pressure gauge, and can automatically control the electric valve and the secondary side circulation pump based on the value fed back by the thermometer and pressure gauge, so that the water temperature control in the capillary tube is more accurate.

[0017] As a preferred embodiment of the present invention, the controller is provided with a remote communication interface.

[0018] The remote communication interface can use the remote RS485 control port and adopt the Modbus-RTU communication protocol, which is helpful for the third party to perform remote monitoring and operation.

[0019] As a preferred embodiment of the present invention, a water replenishment valve is provided on the secondary side return water pipe.

[0020] The water replenishment valve is provided on the secondary side return pipe. When the water volume of the system decreases due to evaporation, leakage, etc., the water replenishment valve will automatically replenish water to maintain the stability of the water volume of the system. In addition, it also helps to avoid the frequent start and stop of the secondary side circulation pump due to pressure changes, thereby extending the service life of the secondary side circulation pump and reducing the energy consumption of the system.

[0021] As a preferred embodiment of the present invention, the capillary radiation system distribution module is of an integrated design and can be mounted on a wall, on the floor, or in a pipe well.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. By adding the pressure differential bypass valve, the pressure difference between the two paths can be reduced quickly, ensuring that the pressure difference of the entire capillary loop is stable within a controllable range, thereby preventing system performance degradation or damage caused by excessive pressure difference and extending the service life of the device.

[0024] 2. The secondary water supply pipe and the secondary water return pipe are both connected with thermometers and pressure gauges, which can provide a more comprehensive understanding of the pressure stabilization of the capillary loop, thereby facilitating more accurate regulation of heating and cooling.

[0025] 3. The controller is electrically connected to the thermometer and pressure gauge, and can automatically control the electric valve and the secondary side circulation pump based on the value fed back by the thermometer and pressure gauge, so that the water temperature control in the capillary tube is more accurate.

[0026] 4. Adding the filter to the secondary water return pipe can also protect the capillary tube from damage and ensure the cleanliness of the inside of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the capillary radiation system distribution module. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0030] like Figure 1 As shown, the water distribution interface in the water collector 1 is connected to the capillary pipeline, and the water collector interface is connected to the plate heat exchanger 1 through the secondary circulation pipeline 3. The water collector 1, the capillary pipeline, the secondary circulation pipeline 3 and the plate heat exchanger 1 together form a secondary closed circulation system. Based on the flow direction of water inside the secondary circulation pipeline 3, the secondary circulation pipeline 3 is divided into a secondary return water pipeline 31 and a secondary water supply pipeline 32. A secondary circulation pump 314 and an expansion tank 312 are provided in the secondary return water pipeline 31.

[0031] Among them, a pressure difference bypass valve 4 is connected between the secondary side water supply pipe 32 and the secondary side return pipe 31. Since the volume capacity of the expansion tank 312 is limited, it has certain limitations in reducing the differential pressure. When a special situation occurs and the pressure difference between the two paths increases to the limit value instantly, and the expansion tank 312 can no longer solve it, the pressure difference between the two paths can be reduced quickly by controlling the pressure difference bypass valve 4 to ensure that the pressure difference of the entire capillary loop is stable within a controllable range. Through the coordinated design of the pressure difference bypass valve 4 and the expansion tube 312, the system performance degradation or damage caused by excessive pressure difference can be further prevented while minimizing the impact on temperature control, thereby extending the service life of the device.

[0032] The other end of the plate heat exchanger 1 is connected to the main engine through the primary side circulation pipeline, and heat is exchanged with the water in the secondary side circulation pipeline 3 through the plate heat exchanger 1, so as to achieve the purpose of regulating the water temperature inside the capillary tube.

[0033] In addition, the secondary side water supply pipe 32 and the secondary side return water pipe are both connected with a thermometer 5, and an electric valve 6 is provided on the primary side circulation pipe. The controller 7 is electrically connected to the thermometer 5 and the electric valve 6, and the electric valve 6 and the secondary side circulation pump 314 can be automatically controlled based on the value fed back by the thermometer 5, so that the water temperature control in the capillary tube is more accurate. In the present embodiment, the electric valve 6 is an electric ball valve 6, but it does not exclude that other embodiments use other types of electric valves 6 for control. Due to the long loop of the capillary, the difference in temperature and pressure difference between the water supply end and the return water end is large. Therefore, the secondary side water supply pipe 32 and the secondary side return water pipe are both connected with a thermometer 5, so that the pressure stabilization of the capillary loop can be more comprehensively understood, which helps to adjust heating and cooling more accurately.

[0034] The following is a specific example, such as in cooling mode:

[0035] When the secondary water supply temperature is greater than the cooling set temperature + hysteresis, the controller 7 opens the primary side electric ball valve 6;

[0036] When the secondary water supply temperature is less than the cooling set temperature - the hysteresis, the controller 7 closes the primary side electric ball valve 6.

[0037] In heating mode:

[0038] When the secondary water supply temperature is less than the heating set temperature - the hysteresis, the controller 7 opens the primary side electric ball valve 6;

[0039] When the secondary water supply temperature is greater than the heating set temperature + the hysteresis, the controller 7 closes the primary side electric ball valve 6.

[0040] The secondary water supply temperature refers to the temperature value of the water in the pipe collected by the thermometer and pressure gauge 5 installed on the secondary water supply pipe 32. The return difference value refers to the difference between the temperature values ​​of the water in the pipe at two points measured by the thermometer and pressure gauge 5 installed on the secondary water supply pipe 32 and the primary return water pipe 31, which is an absolute value.

[0041] In addition, the controller 7 is provided with a remote communication interface. In this embodiment, the remote communication interface can select a remote RS485 control port and adopt the Modbus-RTU communication protocol, which is helpful for a third party to perform remote monitoring and operation.

[0042] As a preferred embodiment of the present invention, a water replenishment valve 313 is further provided on the secondary side return water pipe 31. When the water volume of the system decreases due to evaporation, leakage, etc., the water replenishment valve 313 will automatically replenish water to maintain the stability of the water volume of the system. In addition, it also helps to avoid frequent start and stop of the secondary side circulation pump 314 due to pressure changes, thereby extending the service life of the secondary side circulation pump 314 and reducing the energy consumption of the system.

[0043] As a preferred embodiment of the present invention, a filter 311 is further provided on the secondary water return pipe 31. The filter 311 can intercept impurities carried in the water, such as rust, sand, microorganisms, etc., to prevent these impurities from accumulating in the capillary tube, thereby ensuring the cleanliness of the system. At the same time, the addition of the filter 311 to the secondary water return pipe 31 can also protect the capillary tube. Because the capillary tube in the capillary radiation system is very small and easily damaged by particulate matter, the filter 311 can effectively protect the capillary tube and extend its service life.

[0044] As a preferred embodiment of the present invention, the capillary radiation system distribution module integrates the heat exchange module, the water distribution and regulation module, the transportation module and the control module through an integrated design, so that it is easy to be mounted on the wall or installed on the ground or installed and maintained in a public pipe well.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A capillary radiation system distribution module, comprising a plate heat exchanger (1), a water collector (2), a primary circulation pipeline, and a secondary circulation pipeline (3) connected to the plate heat exchanger (1) and the water collector (2), wherein the secondary circulation pipeline (3) comprises a secondary return water pipeline (31) and a secondary water supply pipeline (32), and the secondary return water pipeline (31) is provided with a secondary circulation pump (314) and an expansion tank (312). It is characterized in that The capillary radiation system distribution module further comprises a pressure differential bypass valve (4), one end of the pressure differential bypass valve (4) being connected to the secondary side water supply pipe (32), and the other end of the pressure differential bypass valve (4) being connected to the secondary side water return pipe (31).

2. The capillary radiation system delivery module according to claim 1, It is characterized in that The secondary water supply pipe (32) and the secondary water return pipe (31) are both connected to a thermometer (5).

3. The capillary radiation system delivery module according to claim 2, It is characterized in that The other end of the plate heat exchanger (1) is connected to a primary-side main engine, and an electric valve (6) is provided between the plate heat exchanger (1) and the primary-side main engine.

4. The capillary radiation system delivery module according to claim 3, It is characterized in that The capillary radiation system distribution module further comprises a controller (7) for controlling the electric valve (6) and the secondary side circulation pump (314), and the controller (7) is electrically connected to the thermometer (5).

5. The capillary radiation system delivery module according to any one of claims 1 to 4, It is characterized in that The secondary water return pipe (31) is provided with a filter (311).

6. The capillary radiation system delivery module according to claim 4, It is characterized in that The controller (7) is provided with a remote communication interface.

7. The capillary radiation system delivery module according to any one of claims 1 to 4, It is characterized in that The secondary water return pipe (31) is provided with a water replenishment valve (313).

8. The capillary radiation system delivery module according to any one of claims 1 to 4, It is characterized in that The capillary radiation system distribution module is of integrated design and can be mounted on a wall, on the floor, or in a pipe well.

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