Cold and hot water unit and outdoor unit thereof

Abstract

The utility model discloses a water chiller-heater unit and an outdoor unit thereof. The shell is provided with a heat exchange cavity and a mounting cavity which are sequentially arranged in the left-right direction; the heat exchanger and the fan module are arranged in the heat exchange cavity; the electric control module, the fluorine path module and the water path module are arranged in the mounting cavity, the electric control module is located on the upper side of the fluorine path module, and the water path module is located on the lower side of the fluorine path module, so that mutual interference of the fluorine path module and the water path module in the assembling process is reduced, and the assembling difficulty of the outdoor unit is reduced; moreover, the water path module is located below the electric control module, the fluorine path module separates the water path module from the electric control module, mutual isolation of the water path module and the electric control module is completely achieved, in this way, when the water path module leaks, leaked water cannot splash upwards to the electric control module, and therefore the electric control module is not prone to being damaged by water.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of heat pump technology, specifically to a cold and hot water unit and its outdoor unit. Background Art

[0002] The existing outdoor unit of a cold and hot water unit includes an electronic control module, a fluorine circuit module, and a water circuit module. The fluorine circuit module and the water circuit module are both directly disposed on the chassis of the outdoor unit and are arranged alternately on the chassis, and the electronic control module is located above the fluorine circuit module and the water circuit module. Such an outdoor unit has problems such as being difficult to assemble and the electronic control module being easily damaged by water. Summary of the Utility Model

[0003] An embodiment of this application provides an outdoor unit of a cold and hot water unit, including: a housing having a heat exchange chamber and an installation chamber arranged in sequence in the left-right direction; a heat exchanger and a fan module disposed in the heat exchange chamber; an electronic control module, a fluorine circuit module, and a water circuit module disposed in the installation chamber, and the electronic control module is located on the upper side of the fluorine circuit module, and the water circuit module is located on the lower side of the fluorine circuit module.

[0004] In some exemplary embodiments, the fluorine circuit module includes a water receiving tray and a compressor. The water receiving tray is fixedly disposed in the installation chamber, the compressor is located on the upper side of the water receiving tray and is disposed on the water receiving tray, and the water circuit module is located on the lower side of the water receiving tray.

[0005] In some exemplary embodiments, the fluorine circuit module further includes an economizer. The economizer is located on the side of the compressor away from the heat exchange chamber in the left-right direction and on the rear side of the compressor in the front-rear direction.

[0006] In some exemplary embodiments, the electronic control module includes a vertically arranged first control board and a vertically arranged second control board. The second control board is located on the side of the first control board away from the heat exchange chamber in the left-right direction, and an operation space is formed between the first control board and the second control board. The fluorine circuit module includes a four-way valve, and the four-way valve is located in the operation space.

[0007] In some exemplary embodiments, the first control board is an outdoor unit control board, and the second control board is an indoor unit control board.

[0008] In some exemplary embodiments, the heat exchange chamber and the installation chamber are separated by a partition. The chamber wall of the installation chamber includes a side rear plate, a side front plate, an upper cover plate, a lower cover plate, a fixing plate, and the partition. The side plates of the side front plate and the side rear plate are both opposite to the partition. A first window is provided at the upper part of the partition, and the first control board is disposed at the first window. A second window is provided at the upper part of the side plate of the side rear plate, and the second control board faces the second window. The upper cover plate is installed at the second window. The fixing plate is located at the lower parts of the side plates of the side front plate and the side rear plate. A third window is formed among the fixing plate, the lower part of the side front plate, and the lower part of the side rear plate. The lower cover plate is installed at the third window and encloses a first through hole and a second through hole together with the fixing plate. The water inlet of the water path module passes through the first through hole, and the water outlet of the water path module passes through the second through hole.

[0009] In some exemplary embodiments, the water path module includes a water-to-fluorine heat exchanger, a water pump, and a water path expansion tank. The water-to-fluorine heat exchanger is located at the front part of one end of the installation chamber adjacent to the heat exchange chamber. The water pump is located at the rear part on the side away from the heat exchange chamber of the water-to-fluorine heat exchanger. The water path expansion tank is located at the rear of the water pump.

[0010] In some exemplary embodiments, the water inlet and the fluorine outlet of the water-to-fluorine heat exchanger are located at the upper part on the side of the water-to-fluorine heat exchanger facing away from the heat exchange chamber. The water outlet and the fluorine inlet of the water-to-fluorine heat exchanger are located at the lower part on the side of the water-to-fluorine heat exchanger facing away from the heat exchange chamber. And a flow switch and a water pressure switch are connected to the water outlet of the water-to-fluorine heat exchanger. The water inlet of the water pump is located at the lower part of the water pump. The water outlet of the water pump is located at the front part of the water pump. The interface of the water path expansion tank is located at the lower part of the water path expansion tank.

[0011] In some exemplary embodiments, the fluorine path module includes a gas-liquid separator and a pressure tank. Both the gas-liquid separator and the pressure tank are located at the upper part at the rear side of the water-to-fluorine heat exchanger, and the gas-liquid separator is located between the pressure tank and the heat exchange chamber.

[0012] In some exemplary embodiments, the interface of the gas-liquid separator is located at the top of the gas-liquid separator, and the interface of the pressure tank is located at the top of the pressure tank.

[0013] The embodiment of the present application also provides a cold and hot water unit, including the outdoor unit of the cold and hot water unit described in any one of the above embodiments.

[0014] For the outdoor unit of the cold and hot water unit provided by the embodiment of the present application, the electric control module, the fluorine circuit module and the water circuit module are all arranged in the installation cavity of the housing, and the electric control module is located above the fluorine circuit module, and the water circuit module is located below the fluorine circuit module. In this way, the mutual interference during the assembly process of the fluorine circuit module and the water circuit module is reduced, so the assembly difficulty of the outdoor unit is reduced. Moreover, the water circuit module is located below the electric control module, and the fluorine circuit module separates the water circuit module and the electric control module, completely realizing the mutual isolation of the water circuit module and the electric control module. In this way, when the water circuit module leaks, the leaked water will not splash upwards onto the electric control module, so the electric control module is less likely to be damaged by water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic perspective view of the outdoor unit according to some embodiments of the present application;

[0016] Figure 2 is Figure 1 a schematic perspective view of the shown outdoor unit after removing the top cover, the front side plate, the rear side plate, the upper cover plate and the lower cover plate;

[0017] Figure 3 is Figure 2 a schematic perspective view of the shown structure after removing the electric control module;

[0018] Figure 4 is Figure 3 a schematic perspective view of the assembled chassis, the lower part of the middle partition plate, the water circuit module, the gas-liquid separator and the pressure tank in the shown structure;

[0019] Figure 5 is Figure 4 a schematic right view of the shown structure;

[0020] Figure 6 is Figure 4 a schematic top view of the shown structure;

[0021] Figure 7 is Figure 2 a schematic perspective view of the assembled electric control module and the upper part of the middle partition plate in the shown structure.

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 100 housing, 110 heat exchange chamber, 120 installation chamber, 121 side rear plate, 1211 second window, 122 side front plate, 123 upper cover plate, 124 lower cover plate, 125 fixing plate, 126 third window, 130 partition plate, 131 first window, 200 electric control module, 210 first control board, 220 second control board, 230 operation space, 300 fluorine circuit module, 310 gas-liquid separator, 320 pressure tank, 330 water receiving tray, 340 compressor, 350 economizer, 360 four-way valve, 400 water circuit module, 410 water-fluorine plate heat exchanger, 420 water pump, 430 water circuit expansion tank, 440 water outlet connection pipe, 441 flow switch, 442 water pressure switch, 450 water inlet connection pipe, 510 first mounting member, 520 second mounting member, 530 support beam, 600 fan module. Detailed implementation manners

[0024] The principles and features of the present application will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not intended to limit the scope of the present application.

[0025] The outdoor unit of the cold and hot water unit provided by the embodiment of the present application, as Figures 1 to 7 shown, includes: a housing 100, the housing 100 having a heat exchange chamber 110 and an installation chamber 120 arranged in sequence in the left-right direction; a heat exchanger and a fan module 600, both the heat exchanger and the fan module 600 are arranged in the heat exchange chamber 110; an electric control module 200, a fluorine circuit module 300 and a water circuit module 400, the electric control module 200, the fluorine circuit module 300 and the water circuit module 400 are all arranged in the installation chamber 120, and the electric control module 200 is located above the fluorine circuit module 300, and the water circuit module 400 is located below the fluorine circuit module 300.

[0026] For this outdoor unit, the electric control module 200, the fluorine circuit module 300 and the water circuit module 400 are all arranged in the installation chamber 120 of the housing 100, and the electric control module 200 is located above the fluorine circuit module 300, and the water circuit module 400 is located below the fluorine circuit module 300. In this way, the mutual interference during the assembly process of the fluorine circuit module 300 and the water circuit module 400 is reduced, so the assembly difficulty of the outdoor unit is lowered; furthermore, the water circuit module 400 is located below the electric control module 200, and the fluorine circuit module 300 separates the water circuit module 400 and the electric control module 200. This solution completely realizes the mutual isolation of the water circuit module 400 and the electric control module 200. In this way, when the water circuit module 400 leaks, the leaked water is blocked by the fluorine circuit module 300 and will not splash upward onto the electric control module 200. Therefore, the electric control module 200 is less likely to be damaged by water.

[0027] Among them, as Figures 1 to 7As shown in the figure, the heat exchange cavity 110 is located on the left side of the installation cavity 120, and the heat exchange cavity 110 and the installation cavity 120 are separated by a partition 130. The peripheral wall of the installation cavity 120 includes a side rear plate 121, a side front plate 122, an upper cover plate 123, a lower cover plate 124, a fixing plate 125, and a partition 130. The side plates of the side front plate 122 and the side plates of the side rear plate 121 are both opposite to the partition 130. A second window 1211 is provided at the upper part of the side plate of the side rear plate 121, and the upper cover plate 123 is mounted at the second window 1211. The fixing plate 125 is located at the lower parts of the side plates of the side front plate 122 and the side rear plate 121. A third window 126 is formed among the fixing plate 125, the lower part of the side front plate 122, and the lower part of the side rear plate 121. The lower cover plate 124 is mounted at the third window 126 and encloses a first through hole and a second through hole together with the fixing plate 125. The water inlet of the water circuit module 400 penetrates through the first through hole, and the water outlet of the water circuit module 400 penetrates through the second through hole. The water inlet and the water outlet of the water circuit module 400 are connected to a water pipeline (such as a floor heating pipeline) to form a water circulation flow path. The side rear plate 121 is a right rear side plate, and the side front plate 122 is a right front side plate. In this solution, by removing the top cover, the upper cover plate 123, the lower cover plate 124, the right rear side plate, and the right front side plate of the housing 100, it is easy to repair and replace the components in the installation cavity 120. As Figures 2 to 4 , Figure 7 shown in the figure, the partition 130 includes an upper part, a middle part, and a lower part. The electronic control module 200 is fixedly connected to the upper part, a part of the fluorine circuit module 300 is fixedly connected to the middle part, and another part is fixedly connected to the lower part. The water circuit module 400 is fixedly connected to the lower part.

[0028] In one embodiment, as Figure 1 shown in the figure, a first opening is provided at the lower part of the right side plate of the right rear side plate, a second opening is provided at the lower part of the right side plate of the right front side plate, and a third opening is provided at the lower part of the front side plate of the right front side plate. The height of the first opening is greater than the height of the second opening. The second opening communicates with the lower part of the first opening and the third opening. The fixing plate 125 is located at the lower parts of the first opening and the second opening. The third window 126 includes the area inside the first opening outside the fixing plate 125, the area inside the second opening outside the fixing plate 125, and the third opening. The shape of the lower cover plate 124 matches the shape of the third window 126.

[0029] In some embodiments, as Figures 3 to 6As shown, the water circuit module 400 includes a water-to-refrigerant heat exchanger 410, a water pump 420, and a water circuit expansion tank 430. The water-to-refrigerant heat exchanger 410 is located at the front part of the left end of the installation cavity 120 and adjacent to the front side plate of the right front side plate. The water pump 420 is located at the rear part on the right side of the water-to-refrigerant heat exchanger 410 and adjacent to the right side plate of the right rear side plate. The water circuit expansion tank 430 is located at the rear of the water pump 420 and adjacent to the rear side plate of the right rear side plate. The refrigerant circuit module 300 includes a gas-liquid separator 310 and a pressure tank 320 (such as a high-pressure tank). Both the gas-liquid separator 310 and the pressure tank 320 are located at the upper part on the rear side of the water-to-refrigerant heat exchanger 410, and the gas-liquid separator 310 is located between the pressure tank 320 and the heat exchange cavity 110. Both the water circuit expansion tank 430 and the water pump 420 are located on the right side of the pressure tank 320. In this solution, the water-to-refrigerant heat exchanger 410, the water pump 420, the water circuit expansion tank 430, the gas-liquid separator 310, and the pressure tank 320 are all adjacent to the peripheral wall of the installation cavity 120. In this way: the interface of the gas-liquid separator 310 is located at the top of the gas-liquid separator 310, and the interface of the pressure tank 320 is located at the top of the pressure tank 320, which is convenient for welding and maintenance when the weld leaks; the water inlet and the refrigerant outlet of the water-to-refrigerant heat exchanger 410 are located at the upper part on the right side of the water-to-refrigerant heat exchanger 410, the water outlet and the refrigerant inlet of the water-to-refrigerant heat exchanger 410 are located at the lower part on the right side of the water-to-refrigerant heat exchanger 410, and a flow switch 441 and a water pressure switch 442 are connected to the water outlet of the water-to-refrigerant heat exchanger 410. The water inlet of the water pump 420 is located at the lower part of the water pump 420, the water outlet of the water pump 420 is located at the front part of the water pump 420, and the interface of the water circuit expansion tank 430 is located at the lower part of the water circuit expansion tank 430. In this way, the interfaces of the water circuit module 400 are not only convenient for pipe connection, but also easy to detect and maintain in case of leakage, and the maintenance process will not be affected by the refrigerant pump module and the partition 130. The water pump 420, the flow switch 441, and the water pressure switch 442 are all opposite to the third window 126. By removing the lower cover plate 124, the water pump 420, the flow switch 441, and the water pressure switch 442 can be maintained. The water inlet of the water-to-refrigerant heat exchanger 410 is communicated with the water outlet of the water pump 420. The water inlet of the water pump 420 is connected with a water inlet pipe 450. The water inlet pipe 450 passes through the first through hole and forms the water inlet of the water circuit module 400. The water outlet of the water-to-refrigerant heat exchanger 410 is connected with a water outlet pipe 440. The flow switch 441 and the water pressure switch 442 are arranged on the water outlet pipe 440. The water outlet pipe 440 passes through the second through hole and forms the water outlet of the water circuit module 400.

[0030] In one embodiment, as Figures 3 to 5 shown, the outdoor unit further includes a first mounting member 510. The rear part on the upper side of the first mounting member 510 has a second mounting member 520 erected in the left-right direction. The water pump 420 is fixed to the top of the first mounting member 510 at the front part of the second mounting member 520, the water circuit expansion tank 430 is fixed to the rear part of the second mounting member 520, and the pressure tank 320 is fixed to the left end of the second mounting member 520.

[0031] In some embodiments, such as Figure 2 and Figure 3 shown, the fluorine circuit module 300 further includes a water receiving tray 330 and a compressor 340. The water receiving tray 330 is fixedly arranged in the installation cavity 120. The compressor 340 is located above the water receiving tray 330 and is arranged on the water receiving tray 330, and the compressor 340 is adjacent to the front side plate of the right front side plate. The water circuit module 400 is located below the water receiving tray 330. In this solution, the length of the refrigerant pipeline between the compressor 340 and the heat exchanger is relatively close to the length of the refrigerant pipeline between the compressor 340 and the water-fluorine plate heat exchanger 410, so that the pressure loss in the refrigerant pipeline can be reduced, and the heat exchange effect of the fluorine circuit module 300 can be improved.

[0032] Among them, as Figure 3 and Figure 4 shown, the rear part of the water receiving tray 330 is fixed on the top of the second mounting member 520, and the front end of the water receiving tray 330 is fixed on the chassis of the housing 100 through one or more support beams 530 (the plurality of support beams 530 can be two support beams 530 arranged at intervals left and right, three support beams 530 arranged at intervals left and right, or four support beams 530 arranged at intervals left and right, etc.). The left end of the water receiving tray 330 is fixed on the partition plate 130. In this way, the water receiving tray 330 has good stability after being fixed and is not easy to vibrate.

[0033] In some embodiments, such as Figure 2 and Figure 3 shown, the fluorine circuit module 300 further includes an economizer 350. The economizer 350 is located on the side of the compressor 340 far from the heat exchange cavity 110 in the left-right direction and on the rear side of the compressor 340 in the front-rear direction. In this way, when the economizer 350 is abnormal, it is convenient to repair and replace the economizer 350. Among them, the economizer 350 is fixed on the upper right side of the second mounting member 520, and the interface of the economizer 350 faces the side where the heat exchange cavity 110 is located, so that it is convenient for the economizer 350 to connect pipes.

[0034] In some embodiments, such as Figure 2 and Figure 7 shown, the electric control module 200 includes a first control board 210 erected in the front-rear direction and a second control board 220 erected in the front-rear direction. The second control board 220 is located on the right side of the first control board 210. An operation space 230 is formed between the first control board 210 and the second control board 220. The fluorine circuit module 300 further includes a four-way valve 360. The four-way valve 360 is located in the operation space 230, making full use of this part of the space and also facilitating wiring of the first control board 210 and the second control board 220 in the operation space 230, especially facilitating wiring of the four-way valve 360 and the first control board 210.

[0035] In some embodiments, such as Figure 2 andFigure 7 As shown, the first control board 210 is set as the outdoor unit control board, and the outdoor unit control board is used to control the outdoor unit; the second control board 220 is set as the indoor unit control board, and the indoor unit control board is used to control the indoor unit of the cold and hot water unit. By removing the upper cover plate 123, the indoor unit control board can be repaired.

[0036] In some embodiments, as Figure 2 and Figure 7 shown, a first window 131 is provided in the upper part of the partition board 130. The first control board 210 is arranged at the first window 131, and the second control board 220 faces the second window 1211. This solution not only facilitates the wiring of the outdoor unit control board to electrical components such as the fan module 600, the compressor 340, and the water pump 420, but also facilitates the wiring of the indoor unit control board to the indoor unit.

[0037] The cold and hot water unit (not shown in the figure) provided by the embodiment of the present application includes the outdoor unit of the cold and hot water unit described in any of the above embodiments.

[0038] This cold and hot water unit has all the advantages of the outdoor unit of the cold and hot water unit provided in any of the above embodiments, which will not be elaborated here.

[0039] In summary, for the outdoor unit of the cold and hot water unit provided by the embodiment of the present application, the electric control module, the fluorine circuit module, and the water circuit module are all arranged in the installation cavity of the housing, and the electric control module is located above the fluorine circuit module, and the water circuit module is located below the fluorine circuit module. In this way, the mutual interference during the assembly process of the fluorine circuit module and the water circuit module is reduced, so the assembly difficulty of the outdoor unit is reduced; furthermore, the water circuit module is located below the electric control module, and the fluorine circuit module separates the water circuit module and the electric control module, completely realizing the mutual isolation of the water circuit module and the electric control module. In this way, when the water circuit module leaks, the leaked water will not splash upward onto the electric control module, so the electric control module is less likely to be damaged by water.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0042] In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0043] In this application, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0045] In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. An external unit of a hot and cold water unit, characterized in that: include: The shell has a heat exchange cavity and a mounting cavity sequentially arranged in the left and right directions; A heat exchanger and a fan module are arranged in the heat exchange chamber; The electric control module, the fluorine circuit module and the water circuit module are arranged in the installation cavity, and the electric control module is located on the upper side of the fluorine circuit module, and the water circuit module is located on the lower side of the fluorine circuit module.

2. The external unit of the hot and cold water unit according to claim 1, characterized in that: The fluorine circuit module includes a water receiving tray and a compressor. The water receiving tray is fixed to the installation cavity. The compressor is located on the upper side of the water receiving tray and is arranged on the water receiving tray. The water circuit module is located on the lower side of the water receiving tray.

3. The external unit of the hot and cold water unit according to claim 2, characterized in that: The fluorine circuit module further includes an economizer, which is located on a side of the compressor away from the heat exchange chamber in the left-right direction and on a rear side of the compressor in the front-back direction.

4. The external unit of the hot and cold water unit according to any one of claims 1 to 3, characterized in that: The electric control module includes a first upright control board and a second upright control board, the second control board is located on a side of the first control board away from the heat exchange chamber in the left-right direction, an operating space is formed between the first control board and the second control board, and the fluorine path module includes a four-way valve, and the four-way valve is located in the operating space.

5. The external unit of the hot and cold water unit according to claim 4, characterized in that: The first control board is an external unit control board, and the second control board is an internal unit control board.

6. The external unit of the hot and cold water unit according to claim 4, characterized in that: The heat exchange chamber and the installation chamber are separated by a partition, and the chamber wall of the installation chamber includes a side rear plate, a side front plate, an upper cover plate, a lower cover plate, a fixed plate and the partition, the side plate of the side front plate and the side plate of the side rear plate are opposite to the partition, a first window is provided on the upper part of the partition, the first control plate is arranged at the first window, a second window is provided on the upper part of the side plate of the side rear plate, the second control plate faces the second window, the upper cover plate is covered at the second window, the fixed plate is located at the lower part of the side plate of the side front plate and the lower part of the side plate of the side rear plate, a third window is formed between the fixed plate, the lower part of the side front plate and the lower part of the side rear plate, the lower cover plate is covered at the third window, and is enclosed with the fixed plate to form a first through hole and a second through hole, the water inlet of the water channel module is penetrated through the first through hole, and the water outlet of the water channel module is penetrated through the second through hole.

7. The external unit of the hot and cold water unit according to any one of claims 1 to 3, characterized in that: The water circuit module includes a water-fluorine plate exchanger, a water pump and a water circuit expansion tank. The water-fluorine plate exchanger is located at the front of one end of the installation cavity adjacent to the heat exchange cavity, the water pump is located at the rear of the water-fluorine plate exchanger on a side away from the heat exchange cavity, and the water circuit expansion tank is located at the rear of the water pump.

8. The external unit of the hot and cold water unit according to claim 7, characterized in that: The water inlet and the fluorine outlet of the water-fluorine plate exchanger are located at the upper part of the water-fluorine plate exchanger on the side facing away from the heat exchange chamber, the water outlet and the fluorine inlet of the water-fluorine plate exchanger are located at the lower part of the water-fluorine plate exchanger on the side facing away from the heat exchange chamber, and the water outlet of the water-fluorine plate exchanger is connected with a flow switch and a water pressure switch, the water inlet of the water pump is located at the lower part of the water pump, the water outlet of the water pump is located at the front part of the water pump, and the interface of the water circuit expansion tank is located at the lower part of the water circuit expansion tank.

9. The external unit of the hot and cold water unit according to claim 7, characterized in that: The fluorine circuit module includes a gas-liquid separator and a pressure tank, both of which are located at the upper part of the rear side of the water-fluorine plate exchanger, and the gas-liquid separator is located between the pressure tank and the heat exchange chamber.

10. A hot and cold water unit, characterized in that: The invention comprises an external unit of the hot and cold water unit as claimed in any one of claims 1 to 9.

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