A fluorine cold water cooling coupled heat dissipation driving plate system

Abstract

The application relates to the technical field of heat pumps, in particular to a fluorine cooling and water cooling coupled heat dissipation driving plate system, which comprises a compressor, a first heat exchanger, a second heat exchanger, a first electronic expansion valve and a driving plate radiator, one end of the compressor is communicated with one end of the first heat exchanger, the other end of the compressor is communicated with one end of the second heat exchanger, the other end of the first heat exchanger is communicated with the other end of the second heat exchanger, the first electronic expansion valve is connected in series in a passage communicated between the first heat exchanger and the second heat exchanger, and a water inlet pipe of the first heat exchanger, the driving plate radiator and a water outlet pipe of the first heat exchanger are communicated in sequence. The fluorine cooling and water cooling coupled heat dissipation driving plate system can overcome the low heat exchange efficiency of the existing fluorine cooling heat pump unit, can improve the heat exchange efficiency under the condition that the ambient temperature is relatively low, can reduce the waste of resources, and can improve the energy-saving economy of the system.

Description

Technical Field

[0001] This application relates to the field of heat pump technology, and in particular to a fluorine-cooled water-cooled coupled heat dissipation drive plate system. Background Technology

[0002] For heat pump units that use fluorine-cooled drive plates, to prevent condensation on the heat exchange plates, high-pressure liquid refrigerant (commonly known as Freon) is typically used to cool the drive plates (commonly referred to as fluorine cooling). This method has two drawbacks: First, to ensure that the refrigerant inlet to the fluorine-cooled plates is taken from the condenser outlet during both heating and cooling, four one-way valves are required, resulting in high costs and complex system piping. Second, the condensed, medium-temperature, high-pressure liquid refrigerant absorbs heat from the drive plates, reducing the subcooling of the system refrigerant and thus lowering heat exchange efficiency. Even disregarding the complex piping in systems that combine cooling and heating, if a system only has heating capabilities, using refrigerant to cool the drive plates in low ambient temperatures not only leads to low heat exchange efficiency but also wastes resources, thus violating the principles of energy conservation and economy. Utility Model Content

[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of low heat exchange efficiency of existing heat pump units using fluorine cooling, and to provide a fluorine-cooled water-cooled coupled heat dissipation drive plate system, which can improve heat exchange efficiency, reduce resource waste, and improve the energy-saving economy of the system when the ambient temperature is low.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A fluorine-cooled water-cooled coupled heat dissipation drive plate system is provided, including a compressor, a first heat exchanger, a second heat exchanger, a first electronic expansion valve, and a drive plate radiator. One end of the compressor is connected to one end of the first heat exchanger, and the other end of the compressor is connected to one end of the second heat exchanger. The other end of the first heat exchanger is connected to the other end of the second heat exchanger. The first electronic expansion valve is connected in series in the passage connecting the first heat exchanger and the second heat exchanger. The water inlet pipe of the first heat exchanger, the drive plate radiator, and the water outlet pipe of the first heat exchanger are connected in sequence.

[0006] This invention enables water cooling of the drive plate radiator in heating mode when the ambient temperature is low. Specifically, the first heat exchanger can be used as the condenser of the unit, exchanging heat through water cooling, while the second heat exchanger is set up as the evaporator, exchanging heat through refrigerant. Compared with the prior art, which uses refrigerant between the main circuits and between the drive plate radiators, and conventionally uses fluorine cooling for heat exchange, the heat dissipation drive plate system of this invention adds a loop between the first heat exchanger and the drive plate radiator, so that the water inlet pipe of the first heat exchanger, the drive plate radiator, and the water outlet pipe of the first heat exchanger are connected in sequence. This allows water cooling of the drive plate radiator, avoiding the problem of the subcooled refrigerant at the condenser outlet absorbing heat from the drive plate radiator when using fluorine cooling. This ensures the refrigerant subcooling of the system, improves the refrigerant heat exchange efficiency of the evaporator, reduces resource waste, and enhances the energy efficiency of the system.

[0007] Furthermore, it also includes a four-way valve, a first one-way valve, and a second one-way valve. Both ends of the compressor, one end of the first heat exchanger, and one end of the second heat exchanger are all connected through the four-way valve. One end of the first one-way valve and one end of the second one-way valve are connected in parallel and connected to one end of the first electronic expansion valve. The other end of the first electronic expansion valve is connected to the first heat exchanger. The other end of the second one-way valve is connected to the drive plate radiator. The other end of the first one-way valve, after being connected in parallel with the drive plate radiator, is connected to the other end of the second heat exchanger. The four-way valve is responsible for switching the refrigerant flow direction, thereby realizing the switching between heating and cooling modes. In cooling mode, this invention still uses refrigerant cooling to exchange heat with the drive plate radiator. The electronic expansion valve is a throttling device controlled by an electrical signal. Its main function is to precisely adjust the refrigerant flow rate to adapt to different operating conditions. The refrigerant flow direction in heating and cooling modes is controlled by two one-way valves. In heating mode, the main refrigerant flows from the first heat exchanger through the first check valve into the second heat exchanger; in cooling mode, the main refrigerant flows from the second heat exchanger through the drive plate radiator and the second check valve into the first heat exchanger.

[0008] Furthermore, the system also includes a gas-liquid separator, through which one end of the compressor is connected to the four-way valve. The gas-liquid separator ensures that the refrigerant entering the compressor is in a pure gaseous state, thereby protecting the compressor and improving system efficiency.

[0009] Furthermore, it also includes a gas-liquid separator, which is installed in the compressor. The gas-liquid separator can be installed independently or as part of the compressor. Its function has been described above and will not be repeated here.

[0010] Furthermore, the first heat exchanger is a water-side heat exchanger, and the second heat exchanger is a finned heat exchanger. The water-side heat exchanger exchanges heat with the refrigerant through liquids such as water and antifreeze. In this invention, a circuit through a drive plate radiator is added to the water-side heat exchanger, allowing for water cooling of the drive plate radiator in heating mode without affecting the main refrigerant heat exchange. The finned heat exchanger exchanges heat with the refrigerant through air.

[0011] Furthermore, it also includes an economizer and a second electronic expansion valve. The first heat exchanger is connected to the third end of the compressor through the economizer. Two pathways are provided between the economizer and the first electronic expansion valve, and the second electronic expansion valve is connected in series in one of these pathways. The second electronic expansion valve typically refers to an electronic expansion valve (EEV) used in gas injection enthalpy enhancement technology. It is one of the core components for achieving efficient heating (especially in low-temperature environments), significantly improving system energy efficiency and operational stability by precisely controlling the refrigerant flow in the gas injection branch.

[0012] Furthermore, the system also includes a first three-way valve and a second three-way valve. The first three-way valve is connected in series between the inlet pipe of the first heat exchanger and the drive plate radiator, and the second three-way valve is connected in series between the drive plate radiator and the outlet pipe of the first heat exchanger. By setting up two three-way valves and controlling the opening and closing of different valve ports in heating mode, the system can prevent the water in the heat exchange tubes of the drive plate radiator from freezing and cracking when the ambient temperature is below 0 degrees Celsius in winter, or when the unit is in standby mode for a long time or the water pump is turned off. Preferably, both the first three-way valve and the second three-way valve are solenoid valves.

[0013] Furthermore, it also includes a first filter, through which the first heat exchanger is connected to the economizer. The first filter is used to intercept impurities in the piping system, preventing impurities from clogging the electronic expansion valve.

[0014] Furthermore, a second filter is also included, with the other end of the first one-way valve connected in parallel with the drive plate radiator and then connected to the second heat exchanger via the second filter. The second filter is used to intercept impurities in the piping system, preventing impurities from clogging the electronic expansion valve when the refrigerant flow direction changes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) Reduce cost: Compared with the existing technology, which uses fluorine cooling in both cooling and heating modes (requiring 4 check valves and 4 three-way valves), the fluorine cooling water cooling coupling scheme of this utility model can reduce the number of check valves and three-way valves, and also eliminates the need for corresponding connecting copper pipes in terms of pipeline complexity.

[0017] (2) Increased heating capacity: The heating mode of this utility model uses water cooling for the drive plate radiator, which avoids the subcooled refrigerant at the outlet of the condenser of the fluorine-cooled scheme absorbing the heat of the drive plate radiator, ensuring the subcooling of the refrigerant in the system and improving the refrigerant heat exchange efficiency of the evaporator; the heating / defrosting mode uses water cooling for the drive plate radiator, and the compressor operates at high frequency in a low-temperature environment, which can recover the heat of the drive plate radiator and give it to the water, making up for the low-temperature heating capacity; at the same time, the heat of the drive plate radiator is recovered and given to the water during defrosting, which slows down the drop in water temperature during defrosting.

[0018] (3) Winter protection of the drive plate radiator: By installing a first three-way valve and a second three-way valve between the inlet pipe of the first heat exchanger and the drive plate radiator and between the drive plate radiator and the outlet pipe of the first heat exchanger, the water in the drive plate radiator can be discharged in time when the unit is idle for a long time or the water pump is turned off, thus avoiding the water in the drive plate radiator pipe from freezing and cracking the pipe, and realizing the use of water cooling for heat recovery in low temperature heating.

[0019] (4) Avoid condensation on the drive board radiator: In cooling mode, fluorine cooling is used, that is, the liquid refrigerant after condensation dissipates heat from the inverter board, which can avoid the problem of condensation on the drive board radiator when the outlet water temperature is too low due to water cooling. At the same time, the cooling water pipe of the first heat exchanger is insulated to prevent water condensation in the pipe in cooling mode and to prevent freezing and cracking in low ambient temperature in heating mode. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment 1 of a fluorine-cooled water-cooled coupled heat dissipation drive board system;

[0021] Figure 2 This is a schematic diagram of an embodiment 2 of a fluorine-cooled water-cooled coupled heat dissipation drive board system;

[0022] Figure 3 This is a schematic diagram of an embodiment 3 of a fluorine-cooled water-cooled coupled heat dissipation drive board system;

[0023] Figure 4 This is a schematic diagram of an embodiment 4 of a fluorine-cooled water-cooled coupled heat dissipation drive board system;

[0024] Figure 5 This is a schematic diagram of embodiment 5 of a fluorine-cooled water-cooled coupled heat dissipation drive board system.

[0025] The illustration is explained below:

[0026] 1. Compressor; 2. Gas-liquid separator; 3. First heat exchanger; 4. Second heat exchanger; 5. Drive plate radiator; 61. Four-way valve; 62. First check valve; 63. Second check valve; 64. First electronic expansion valve; 65. Second electronic expansion valve; 66. First three-way valve; 67. Second three-way valve; 7. Economizer; 81. First filter; 82. Second filter; A is the port of the first heat exchanger; I is the inlet of the first heat exchanger; O is the outlet of the first heat exchanger; D is the port of the second heat exchanger; B is the first port of the economizer; C is the second port of the economizer; E1, E2, and E3 are the three ports of the first three-way valve; E4, E5, and E6 are the three ports of the second three-way valve; F1, F2, F3, and F4 are the four ports of the drive plate radiator. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Example 1

[0031] like Figure 1The first embodiment of the fluorine-cooled water-cooled coupled heat dissipation drive plate system of this utility model is shown. It includes a compressor 1, a first heat exchanger 3, a second heat exchanger 4, a first electronic expansion valve 64, and a drive plate radiator 5. One end of the compressor 1 is connected to one end of the first heat exchanger 3, and the other end of the compressor 1 is connected to one end of the second heat exchanger 4. The other end of the first heat exchanger 3 is connected to the other end of the second heat exchanger 4. The first electronic expansion valve 64 is connected in series in the passage connecting the first heat exchanger 3 and the second heat exchanger 4. The water inlet pipe of the first heat exchanger 3, the drive plate radiator 5, and the water outlet pipe of the first heat exchanger 3 are connected in sequence.

[0032] In this embodiment, when heating in a low-temperature environment, circulating water can be used to dissipate heat from the drive plate radiator 5. Specifically, the refrigerant flow direction in the main circuit is from port A of the first heat exchanger 3 to port D of the second heat exchanger 4. In heating mode, the refrigerant does not pass through the drive plate radiator 5; the heat dissipation of the drive plate radiator 5 is entirely handled by water cooling through the loop between the inlet and outlet pipes of the first heat exchanger 3. Compared to the prior art's use of fluorine cooling to dissipate heat from the drive plate radiator 5, this avoids the subcooled refrigerant at the condenser outlet absorbing heat from the drive plate radiator 5, ensuring the system's refrigerant subcooling, improving the refrigerant heat exchange efficiency of the second heat exchanger 4, reducing resource waste, and enhancing the system's energy efficiency and economy.

[0033] Example 2

[0034] like Figure 2 As shown, this embodiment is similar to embodiment 1, except that this embodiment also includes a four-way valve 61, a first one-way valve 62, and a second one-way valve 63. Both ends of the compressor 1, one end of the first heat exchanger 3, and one end of the second heat exchanger 4 are all connected through the four-way valve 61. One end of the first one-way valve 62 and one end of the second one-way valve 63 are connected in parallel and are connected to one end of the first electronic expansion valve 64. The other end of the first electronic expansion valve 64 is connected to the first heat exchanger 3. The other end of the second one-way valve 63 is connected to the drive plate radiator 5. The other end of the first one-way valve 62 is connected in parallel with the drive plate radiator 5 and then connected to the other end of the second heat exchanger 4.

[0035] The four-way valve 61 is responsible for switching the refrigerant flow direction, thereby realizing the switching between heating and cooling modes. In cooling mode, the heat exchange of the drive plate radiator 5 is still achieved through refrigerant cooling. The first electronic expansion valve 64 is a throttling device controlled by an electrical signal, whose main function is to precisely regulate the refrigerant flow to adapt to different operating conditions. The refrigerant flow direction in heating and cooling modes is controlled by two one-way valves. In heating mode, the main refrigerant flows from the first heat exchanger 3 through the first electronic expansion valve 64, then enters the first one-way valve 62, and then enters the second heat exchanger 4; in cooling mode, the main refrigerant flows from the second heat exchanger 4 through the drive plate radiator 5 and the second one-way valve 63, then enters the first electronic expansion valve 64, and then enters the first heat exchanger 3.

[0036] Example 3

[0037] like Figure 3 As shown, this embodiment is similar to Embodiment 2, except that it further includes a gas-liquid separator 2. One end of the compressor 1 is connected to the four-way valve 61 through the gas-liquid separator 2, or the gas-liquid separator 2 is installed in the compressor 1. The gas-liquid separator 2 ensures that the refrigerant entering the compressor 1 is in a pure gaseous state, thereby protecting the compressor 1 and improving system efficiency.

[0038] Example 4

[0039] like Figure 4 As shown, this embodiment is similar to embodiment 3, except that this embodiment also includes an economizer 7 and a second electronic expansion valve 65. The first heat exchanger 3 is connected to the third end of the compressor 1 through the economizer 7. There are two passages between the economizer 7 and the first electronic expansion valve 64, and the second electronic expansion valve 65 is connected in series in one of the passages.

[0040] like Figure 4 As shown, in heating mode, the refrigerant flow direction of the main circuit is as follows: the refrigerant flows from port A of the first heat exchanger 3 through port B of the economizer 7, then flows out from port C of the economizer 7 into the first electronic expansion valve 64, then through the first check valve 62, and finally into port D of the second heat exchanger 4. In heating mode, the refrigerant does not pass through the drive plate radiator 5, which is entirely water-cooled.

[0041] In cooling / defrosting mode, the main refrigerant flow path is as follows: from port D of the second heat exchanger 4 to port F3 of the drive plate radiator 5, then from port F4 of the drive plate radiator 5 through the second one-way valve 63, to the first electronic expansion valve 64, then through the second port C of the economizer 7 to the first port B of the economizer 7, and finally into port A of the first heat exchanger 3.

[0042] One embodiment of this utility model also includes a first filter 81, through which the first heat exchanger 3 is connected to the economizer 7. The first filter 81 is used to intercept impurities in the pipeline system to prevent impurities from clogging the electronic expansion valve.

[0043] In one embodiment of this utility model, a second filter 82 is also included. The other end of the first one-way valve 62, which is connected in parallel with the drive plate radiator 5, is connected to the second heat exchanger 4 through the second filter 82. The second filter 82 is used to intercept impurities in the piping system to prevent impurities from clogging the electronic expansion valve when the refrigerant flow direction changes.

[0044] Example 5

[0045] like Figure 5 As shown, this embodiment is similar to embodiment 4, except that this embodiment also includes a first three-way valve 66 and a second three-way valve 67. The first three-way valve 66 is connected in series between the water inlet pipe of the first heat exchanger 3 and the drive plate radiator 5, and the second three-way valve 67 is connected in series between the drive plate radiator 5 and the water outlet pipe of the first heat exchanger 3.

[0046] Heating mode water cooling circuit: such as Figure 5 As shown, a three-way valve is installed between the inlet pipe of the first heat exchanger 3 and the drive plate radiator 5 and the outlet pipe of the first heat exchanger 3. Specifically, a passage is led out from the inlet I port of the first heat exchanger 3 to the port F1 of the drive plate radiator 5, and a passage is led out from the outlet O port of the first heat exchanger 3 to the port F2 of the drive plate radiator 5. A first three-way valve 66 is installed in the pipeline from port I to port F1 (the internal flow direction is E1 to E3 when energized, and E2 to E3 when de-energized). A second three-way valve 67 is installed in the pipeline from port O to port F2 (the internal flow direction is E6 to E4 when energized, and E6 to E5 when de-energized).

[0047] When the unit is running, the circulating water flows as follows: the water inlet I of the first heat exchanger 3 enters the first three-way valve 66 through E1 to E3, then enters the drive plate radiator 5 through port F1, flows out through the drive plate radiator 5 through port F2, passes through the second three-way valve 67 through E6 and E5, and flows into the first heat exchanger 3 through port O.

[0048] The control logic of the first three-way valve 66 and the second three-way valve 67 is as follows: When the unit is operating in heating mode and defrost mode, the first three-way valve 66 and the second three-way valve 67 are energized. When the standby time in shutdown mode and heating mode exceeds 3 minutes, and when operating in cooling mode, the first three-way valve 66 and the second three-way valve 67 are de-energized. When the first three-way valve 66 and the second three-way valve 67 are de-energized, air enters from E2 to E3 in the first three-way valve 66, while E6 to E5 of the second three-way valve 67 are open, draining the water from the pipes of the drive plate radiator 5, preventing the water in the pipes of the drive plate radiator 5 from freezing and cracking the pipes. The above control logic enables low-temperature heating using water cooling for heat recovery. Preferably, both the first three-way valve 66 and the second three-way valve 67 are solenoid valves.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fluorine-cooled water-cooled coupled heat dissipation drive board system, characterized in that, The device includes a compressor (1), a first heat exchanger (3), a second heat exchanger (4), a first electronic expansion valve (64), and a drive plate radiator (5). One end of the compressor (1) is connected to one end of the first heat exchanger (3), and the other end of the compressor (1) is connected to one end of the second heat exchanger (4). The other end of the first heat exchanger (3) is connected to the other end of the second heat exchanger (4). The first electronic expansion valve (64) is connected in series in the passage connecting the first heat exchanger (3) and the second heat exchanger (4). The water inlet pipe of the first heat exchanger (3), the drive plate radiator (5), and the water outlet pipe of the first heat exchanger (3) are connected in sequence.

2. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 1, characterized in that, It also includes a four-way valve (61), a first one-way valve (62), and a second one-way valve (63). Both ends of the compressor (1), one end of the first heat exchanger (3), and one end of the second heat exchanger (4) are connected through the four-way valve (61). One end of the first one-way valve (62) is connected in parallel with one end of the second one-way valve (63) and is connected to one end of the first electronic expansion valve (64). The other end of the first electronic expansion valve (64) is connected to the first heat exchanger (3). The other end of the second one-way valve (63) is connected to the drive plate radiator (5). The other end of the first one-way valve (62) is connected in parallel with the drive plate radiator (5) and then connected to the other end of the second heat exchanger (4).

3. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 2, characterized in that, It also includes a gas-liquid separator (2), one end of the compressor (1) is connected to the four-way valve (61) through the gas-liquid separator (2).

4. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 2, characterized in that, It also includes a gas-liquid separator (2), which is installed in the compressor (1).

5. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 3 or 4, characterized in that, The first heat exchanger (3) is a water-side heat exchanger, and the second heat exchanger (4) is a finned heat exchanger.

6. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 5, characterized in that, It also includes an economizer (7) and a second electronic expansion valve (65). The first heat exchanger (3) is connected to the third end of the compressor (1) through the economizer (7). There are two passages between the economizer (7) and the first electronic expansion valve (64). The second electronic expansion valve (65) is connected in series in one of the passages.

7. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 6, characterized in that, It also includes a first filter (81), through which the first heat exchanger (3) is connected to the economizer (7).

8. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 3, characterized in that, It also includes a second filter (82), and the other end of the first one-way valve (62) is connected to the second heat exchanger (4) through the second filter (82) and the parallel end of the drive plate radiator (5).

9. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 1, characterized in that, It also includes a first three-way valve (66) and a second three-way valve (67). The first three-way valve (66) is connected in series between the water inlet pipe of the first heat exchanger (3) and the drive plate radiator (5), and the second three-way valve (67) is connected in series between the drive plate radiator (5) and the water outlet pipe of the first heat exchanger (3).

10. The fluorine-cooled water-cooled coupled heat dissipation drive board system according to claim 9, characterized in that, Both the first three-way valve (66) and the second three-way valve (67) are solenoid valves.

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