Outdoor unit and air energy heat pump system

Abstract

The utility model discloses an outdoor unit and an air energy heat pump system. The outdoor unit comprises a shell, a domestic water tank, an outdoor side heat exchanger, a compressor, a hot water side heat exchanger and a hot water side water pump. The interior of the shell comprises a first space area, a second space area and a third space area, the second space area is located on the horizontal side of the first space area, and the third space area is located below the first space area and the second space area correspondingly. The domestic water tank is vertically installed in the first space area, the outdoor heat exchanger is installed in the second space area, and the compressor, the hot water side heat exchanger and the hot water side water pump are installed in the third space area. The internal space of the outdoor unit is reasonable in layout, air does not need to enter the water tank side, the outdoor unit can be installed against the wall, the installation space is saved, meanwhile, the air volume and the heat exchange efficiency of the outdoor side heat exchanger cannot be affected, the space utilization rate is increased, and miniaturization of products is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to an outdoor unit and an air energy heat pump system. Background Art

[0002] Existing heat pumps are widely used to prepare hot water, and are usually provided with a domestic water tank to store a large amount of hot water. When the domestic water tank is arranged horizontally in the outdoor unit, the horizontal arrangement area is too large, which is not conducive to installing the outdoor unit in some platform areas with relatively small installation areas. Utility Model Content

[0003] Based on this, it is necessary to provide an outdoor unit and an air energy heat pump system to address the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problem is: construct an outdoor unit, comprising:

[0005] A shell, wherein the interior of the shell includes a first space area, a second space area and a third space area, the second space area is located on a horizontal side of the first space area, and the third space area is located below the first space area and the second space area respectively;

[0006] A domestic water tank, which is used to store domestic water and is vertically installed in the first space area;

[0007] An outdoor heat exchanger, the outdoor heat exchanger is used to achieve heat exchange between the refrigerant and the outside air, and the outdoor heat exchanger is installed in the second space area;

[0008] A compressor, a hot water side heat exchanger and a hot water side water pump, the compressor is used to provide refrigerant for the outdoor side heat exchanger and the hot water side heat exchanger, the hot water side heat exchanger is used to prepare hot water by heat exchange between the refrigerant and the water in the domestic water tank, the hot water side water pump is used to provide power for the water circulation between the domestic water tank and the hot water side heat exchanger, the compressor, the hot water side heat exchanger and the hot water side water pump are installed in the third space area.

[0009] In one embodiment, the housing further comprises a chassis located in the third space area, and the outdoor unit further comprises:

[0010] A first heat exchanger bracket is fixed on the chassis, and the hot water side heat exchanger is installed on the first heat exchanger bracket.

[0011] In one embodiment, the outdoor unit further comprises:

[0012] A first water pump bracket, the hot water side water pump is installed in the third space area through the first water pump bracket.

[0013] In one embodiment, the outdoor unit further comprises:

[0014] The air-conditioning side heat exchanger is used to realize heat exchange between the refrigerant and the water in the external terminal device, and the air-conditioning side heat exchanger is installed in the third space area.

[0015] In one embodiment, the outdoor unit further comprises:

[0016] An air-conditioning side water pump, the air-conditioning side water pump is used to provide power for the water circulation between the air-conditioning side heat exchanger and the external terminal device, and the air-conditioning side water pump is installed in the third space area.

[0017] In one embodiment, the outdoor unit further comprises:

[0018] A pressure buffer, which is used to adjust the water pressure between the air-conditioning side heat exchanger and the external terminal device, and the pressure buffer is installed in the third space area.

[0019] In one embodiment, the outdoor unit further comprises:

[0020] A liquid storage container, the liquid storage container is used to store liquid refrigerant, and the liquid storage container is installed in the third space area;

[0021] And / or, a gas-liquid separator, the gas-liquid separator is used to separate gaseous refrigerant and liquid refrigerant, and the gas-liquid separator is installed in the third space area.

[0022] In one embodiment, the outdoor unit further comprises:

[0023] a partition, the partition being arranged inside the shell along a height direction of the shell and connected to the shell to separate the first space area from the second space area;

[0024] A water receiving tray is used to collect condensed water. The water receiving tray is arranged inside the shell along the length direction of the shell and is connected to the partition and the shell to separate the second space area and the third space area.

[0025] In one embodiment, the hot water side heat exchanger is a shell and tube heat exchanger.

[0026] The utility model also constructs an air energy heat pump system, comprising any of the outdoor units described above.

[0027] By implementing the utility model, the following beneficial effects are achieved:

[0028] The utility model constructs a first space area, a second space area and a third space area inside the outdoor unit, wherein the second space area is located on the horizontal side of the first space area, and the third space area is located below the first space area and the second space area, respectively. The domestic water tank is vertically installed in the first space area, and the outdoor heat exchanger is installed in the second space area, so that the internal space layout of the outdoor unit is reasonable, the water tank side does not need air intake, and can be installed against the wall to be applied to the installation space with poor ventilation environment, and the gaps left at both ends during the original installation are changed to a single-side gap, so that the installation space has wide adaptability and can save installation space. At the same time, since the outdoor heat exchanger is set separately, it can also ensure that there is enough ventilation on the heat exchanger side to ensure heat exchange efficiency, and avoid the heat exchange efficiency of the outdoor heat exchanger being reduced due to insufficient ventilation space. In addition, the vertical installation of the domestic water tank can increase the water discharge volume, water discharge rate and hot water supply capacity.

[0029] Moreover, the compressor, the hot water side heat exchanger and the hot water side water pump are installed in the third space area, which makes full use of the lower space of the domestic water tank and the outdoor heat exchanger, does not occupy the space of the outdoor heat exchanger or the domestic water tank, and has a reasonable space layout, which will not affect the air volume and heat exchange efficiency of the outdoor heat exchanger, thereby improving space utilization, and improving the integration of the outdoor unit, thereby realizing miniaturization of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0031] Figure 1 It is a schematic diagram of the overall structure of the outdoor unit of the utility model;

[0032] Figure 2 Schematic diagram of the positions of the first space area, the second space area and the third space area inside the shell of the outdoor unit of the utility model, wherein the dotted line is a virtual boundary line, and the first space area is connected to the third space area;

[0033] Figure 3 It is a front view schematic diagram of the structure of the outdoor unit of the utility model;

[0034] Figure 4 It is a back schematic diagram of the structure of the outdoor unit of the utility model;

[0035] Figure 5 It is a schematic diagram of the air energy heat pump system of the utility model;

[0036] Figure 6It is a schematic diagram of the refrigerant flow direction of the air energy heat pump system of the utility model for preparing hot water through a full heat recovery mode while refrigerating;

[0037] Figure 7 It is a schematic diagram of the flow direction of the first refrigerant in the air energy heat pump system of the utility model for preparing hot water through the waste heat recovery mode while cooling;

[0038] Figure 8 It is a schematic diagram of the flow direction of the second refrigerant in the air energy heat pump system of the utility model for preparing hot water through the waste heat recovery mode while cooling;

[0039] Fig. 9 This is a schematic diagram of the flow direction of the first refrigerant in the air energy heat pump system of the utility model when preparing hot water while heating;

[0040] Fig.10 It is a schematic diagram of the flow direction of the second refrigerant in the air energy heat pump system of the utility model for preparing hot water while heating;

[0041] Fig.11 It is a schematic diagram of the refrigerant flow direction of the air energy heat pump system of the utility model when preparing hot water purely;

[0042] Fig.12 It is a schematic diagram of the refrigerant flow direction of the air energy heat pump system of the utility model in the cooling mode;

[0043] Fig.13 It is a schematic diagram of the refrigerant flow direction of the air energy heat pump system of the utility model in the heating mode. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model 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 cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "located at", and "located at" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0048] It should be noted that the height direction Z of the housing 10 is the vertical direction, and the length direction Y of the housing 10 is the horizontal direction, also called the lateral direction.

[0049] like Figures 1 to 4 As shown, an embodiment of the utility model discloses an outdoor unit, including a housing 10, a domestic water tank 11, an outdoor side heat exchanger 12, a compressor 13, a hot water side heat exchanger 14 and a hot water side water pump 15, as follows:

[0050] like Figure 2 and Figure 3 As shown, the housing 10 includes a first space area 101, a second space area 102 and a third space area 103, wherein the second space area 102 is located on a horizontal side of the first space area 101, and the third space area 103 is located below the first space area 101 and the second space area 102. The first space area 101 and the third space area 103 may be separated by a partition or other structure, or may not be separated by a partition or other structure.

[0051] like Figure 5As shown, the domestic water tank 11 includes a cold water inlet 111, a water outlet 112, a return water outlet 113 and a hot water outlet 114. The domestic water tank 11 is used to store domestic water. Figure 3 As shown, the domestic water tank 11 is vertically installed in the first space area 101. It should be noted that the vertical installation is to extend along the height direction Z of the housing 10.

[0052] like Figure 5 As shown, the outdoor heat exchanger 12 includes a first refrigerant port 121 and a second refrigerant port 122 connected to the first refrigerant port 121. The outdoor heat exchanger 12 is used to achieve heat exchange between the refrigerant and the outside air. Figure 3 As shown, the outdoor heat exchanger 12 is installed in the second space area 102 .

[0053] like Figure 5 As shown, the compressor 13 includes an inlet 131 and an outlet 132, and the compressor 13 is used to provide refrigerant to the outdoor heat exchanger 12 and the hot water heat exchanger 14. The hot water heat exchanger 14 includes a refrigerant inlet 141, a refrigerant outlet 142 connected to the refrigerant inlet 141, a first water inlet 143 and a first water outlet 144 connected to the first water inlet 143. The hot water heat exchanger 14 is used to prepare hot water by heat exchange between the refrigerant and the water in the domestic water tank 11. The hot water side water pump 15 is used to provide power for the water circulation between the domestic water tank 11 and the hot water side heat exchanger 14. The hot water side water pump 15 is arranged in the water inlet pipe or the water outlet pipe of the hot water side heat exchanger 14. As shown Figure 3 and Figure 4 As shown, the compressor 13 , the hot water side heat exchanger 14 and the hot water side water pump 15 are installed in the third space area 103 .

[0054] This embodiment makes the internal space layout of the outdoor unit reasonable. Since the domestic water tank 11 is installed vertically in the first space area 101, and the outdoor heat exchanger 12 is installed in the second space area 102, the water tank side does not need air intake and can be installed against the wall to be applied to installation spaces with poor ventilation environment. The gaps left at both ends during the original installation are changed to gaps left on one side, and the installation space has wide adaptability and can save installation space. At the same time, since the outdoor heat exchanger 12 is set separately, it can also ensure that there is sufficient ventilation on the heat exchanger side to ensure heat exchange efficiency, and avoid the heat exchange efficiency of the outdoor heat exchanger 12 from decreasing due to insufficient ventilation space.

[0055] Moreover, the compressor 13, the hot water side heat exchanger 14 and the hot water side water pump 15 fully utilize the lower space of the domestic water tank 11 and the outdoor heat exchanger 12, do not occupy the space of the outdoor heat exchanger 12 or the domestic water tank 11, and have a reasonable spatial layout, which will not affect the air volume and heat exchange efficiency of the outdoor heat exchanger 12, thereby improving space utilization, and improving the integration of the outdoor unit, thereby realizing miniaturization of the product.

[0056] It is also convenient for designing and arranging the pipelines, which is beneficial for reducing the pipelines between the hot water side heat exchanger 14 and the domestic water tank 11, and avoiding the loss of heat and pipeline pressure during the hot water transportation process caused by the pipelines being too long.

[0057] Since the density of hot water is lower than that of cold water, compared with installing the domestic water tank 11 horizontally, installing the domestic water tank 11 vertically is conducive to allowing the prepared hot water to quickly rise to the top of the domestic water tank 11, so that the hot water outlet 114 at the top can quickly obtain high-temperature hot water, thereby improving the water discharge volume, water discharge rate and hot water supply capacity. In some embodiments, the domestic water tank 11 is a metal tank body, such as a stainless steel cylindrical tank body. The outer wall surface of the domestic water tank 11 is wrapped with an insulation layer, such as insulation cotton or polyurethane foam, and the heat loss of the prepared hot water is prevented by wrapping the insulation layer. The stainless steel cylindrical tank body, the insulation cotton and the polyurethane foam here are only examples and are not intended to be a limitation of the utility model.

[0058] In some embodiments, an electric auxiliary heater, such as an electric heating rod, is provided in the domestic water tank 11. In order to monitor the temperature in the domestic water tank 11 in real time, a temperature detector, such as a thermometer, is provided in the domestic water tank 11. The electric heating rod and the thermometer are merely examples and are not intended to limit the present invention.

[0059] When water is heated, scale will be generated, and the scale will cause corrosion to the domestic water tank 11. A water softening device and / or an anti-corrosion layer is provided in the domestic water tank 11. For example, the water softening device is a magnesium rod, and the anti-corrosion layer is a metal coating. After the magnesium rod is placed in the domestic water tank 11, the magnesium rod will release magnesium ions, so that the water alkali and scale in the domestic water tank 11 are reduced, effectively preventing a large amount of scale from being attached to the inner wall of the domestic water tank 11, thereby avoiding corrosion to the domestic water tank 11.

[0060] In some embodiments, a pressure relief device is provided on the top of the domestic water tank 11, and the pressure relief device is used to release the pressure inside the domestic water tank 11. For example, the pressure relief device is an exhaust valve, and the exhaust valve here is only an example and is not intended to limit the present application.

[0061] In some embodiments, Figure 3 As shown, the hot water side heat exchanger 14 and the hot water side water pump 15 are installed in the third space area 103 corresponding to the first space area 101, that is, below the domestic water tank 11, thereby fully utilizing the space below the domestic water tank 11.

[0062] For example, the hot water side heat exchanger 14 is a shell and tube heat exchanger, which extends around the height direction Z of the housing 10 and is arranged around the periphery of the hot water side water pump 15 to fully utilize the peripheral space of the hot water side water pump 15. The pipes inside the shell and tube heat exchanger can carry two heat exchange media, refrigerant and water. The refrigerant and water are separated by copper pipes and heat exchange is performed to provide hot water for the domestic water tank 11. The shell and tube heat exchanger here is only an example and is not intended to limit the present invention.

[0063] In some embodiments, Figure 3 As shown, the outdoor unit further includes a water tank bracket 32, and the housing 10 includes a chassis 106 located in the third space area 103, and the chassis 106 is used to be fixed on an external fixture, such as fixed on the ground. The water tank bracket 32 ​​is fixed on the chassis 106, and the domestic water tank 11 is installed on the water tank bracket 32 ​​so that an accommodation space is formed between the bottom of the domestic water tank 11 and the chassis 106, and the hot water side heat exchanger 14 and the hot water side water pump 15 are located in the accommodation space.

[0064] In some embodiments, the domestic water tank 11 extends to the third space area 103 and is fixedly connected to the chassis 106 .

[0065] In some embodiments, Figure 3 As shown, the outdoor unit further includes a first heat exchanger bracket 33 , the first heat exchanger bracket 33 is fixed on the chassis 106 , and the hot water side heat exchanger 14 is mounted on the first heat exchanger bracket 33 .

[0066] In some embodiments, the outdoor unit further includes a first water pump bracket (not shown), and the hot water side water pump 15 is installed in the third space area 103 through the first water pump bracket. For example, the first water pump bracket can be a hard pipe at the inlet and outlet ends of the hot water side water pump 15, and the hard pipe plays a supporting role. The first water pump bracket can also be fixed to a bracket on the chassis 106, and the hot water side water pump 15 is installed on the first water pump bracket.

[0067] In some embodiments, in order to reduce the number of pipes between the hot water side heat exchanger 14 and the domestic water tank 11 , the water outlet 112 is located at the bottom of the domestic water tank 11 , and the water return port 113 is located in the middle of the domestic water tank 11 .

[0068] In some embodiments, the water outlet 112 is connected to the first water inlet 143, the first water outlet 144 is connected to the water return port 113, there is a space between the domestic water tank 11 and the corner inside the housing 10, and the pipe connecting the first water outlet 144 to the water return port 113 is located in the space to make full use of the space in the corner. For example, the domestic water tank 11 is cylindrical, and the cylindrical shape here is only an example and is not intended to limit the present application.

[0069] In some embodiments, Figure 2 As shown, the first space area 101 and the second space area 102 are arranged in a stepped manner inside the shell 10 to form a first space and a second space with different vertical lengths in the third space area 103, wherein the first space corresponds to the second space area 102 (that is, the first space is located below the outdoor heat exchanger 12), the second space corresponds to the first space area 101 (that is, the second space is located below the domestic water tank 11), and the vertical length of the first space is greater than the vertical length of the second space.

[0070] In this embodiment, system components with different height requirements can be placed in the first space and the second space, so that the internal space layout of the outdoor unit is reasonable, and the problem of insufficient internal space of the outdoor unit when the domestic water tank 11 is built into the outdoor unit is solved, thereby improving space utilization and achieving miniaturization. It should be noted that the first space area 101 and the second space area 102 are arranged in a stepped manner inside the housing 10, which means that they are arranged in a stepped manner in the height direction Z of the housing 10.

[0071] Specifically, if Figure 3 As shown, the height of the domestic water tank 11 is greater than the height of the outdoor heat exchanger 12, and the lowest point of the domestic water tank 11 is lower than the lowest point of the outdoor heat exchanger 12, thereby making full use of the internal space of the outdoor unit to increase the height of the domestic water tank 11 and increase the water volume.

[0072] In some embodiments, Figure 2 and Figure 3As shown, the first space area 101 is connected to the third space area 103, and the second space area 102 is isolated from the first space area 101 and the third space area 103. The first space area 101 and the third space area 103 form an "L"-shaped cavity, and the third space area 103 partially extends to the bottom of the second space area 102, and the second space area 102 is an independent cavity.

[0073] Specifically, Figure 3 As shown, the outdoor unit further includes a partition 16 , which is disposed inside the housing 10 along a height direction Z of the housing 10 and connected to the housing 10 to separate the first space area 101 and the second space area 102 .

[0074] The outdoor unit further includes a water receiving pan 17 for collecting condensed water, the water receiving pan 17 is disposed inside the housing 10 along the length direction Y of the housing 10 and is connected to the partition 16 and the housing 10 to separate the second space area 102 and the third space area 103. The partition 16, the water receiving pan 17 and the housing 10 define an "L"-shaped cavity and another cavity, the other cavity being, for example, a rectangle, the rectangle being merely an example and not intended to limit the present invention.

[0075] In some embodiments, Figure 3 As shown, the outdoor unit further includes a fan 18, which is used to drive the outside air to exchange heat with the outdoor heat exchanger 12, and the fan 18 is installed in the second space area 102. For example, the outdoor heat exchanger 12 is a finned heat exchanger, which is only an example and is not intended to limit the present invention.

[0076] Accordingly, if Figure 1 and Figure 4 As shown, the first surface of the shell 10 corresponding to the second spatial area 102 is provided with an air inlet 104, and the second surface is provided with an air outlet 105. For example, the side of the shell 10 is provided with the air inlet 104, and the front is provided with the air outlet 105. The side and the front here are only examples and are not intended to limit the present invention. It can be any two of the front, the side and the back.

[0077] In some embodiments, Figure 3 As shown, the water receiving tray 17 is provided with a heat dissipation hole 171, and the heat dissipation hole 171 connects the "L"-shaped cavity and the other cavity. When the fan 18 is started, the other cavity is negative pressure, and the hot air generated by the components in the "L"-shaped cavity can be discharged to the outside.

[0078] In some embodiments, Figure 3 and Figure 4 As shown, the compressor 13 is installed in the third space area 103 corresponding to the second space area 102, that is, below the outdoor heat exchanger 12. Specifically, the outdoor unit further includes a compressor bracket (not shown), the compressor bracket is fixed on the chassis 106, and the compressor 13 is installed (for example, vertically installed) on the compressor bracket.

[0079] In some embodiments, Figure 5 As shown, the outdoor unit further includes an air-conditioning side heat exchanger 19, which includes a third refrigerant port 191, a fourth refrigerant port 192 connected to the third refrigerant port 191, a second water inlet 193, and a second water outlet 194 connected to the second water inlet 193. The compressor 13 is also used to provide refrigerant to the air-conditioning side heat exchanger 19, and the air-conditioning side heat exchanger 19 is used to realize heat exchange between the refrigerant and the water in the external terminal device 31, as shown in FIG. Figure 3 As shown, the air-conditioning side heat exchanger 19 is installed in the third space area 103 , specifically, in the third space area 103 corresponding to the second space area 102 , that is, below the outdoor side heat exchanger 12 .

[0080] For example, the air-conditioning side heat exchanger 19 is a plate heat exchanger, and the external terminal device 31 may include an air disk and / or floor heating installed indoors, and may further include a hydraulic module connected between the air-conditioning side heat exchanger 19 and the air disk and / or floor heating. The plate heat exchanger, the air disk, the floor heating and the hydraulic module here are only examples and are not intended to limit the present invention.

[0081] In some embodiments, Figure 3 As shown, the outdoor unit further includes a second heat exchanger bracket 34 , which is fixed on the chassis 106 , and the air-conditioning side heat exchanger 19 is installed (eg vertically installed) on the second heat exchanger bracket 34 .

[0082] In some embodiments, Figure 4 As shown, the outdoor unit also includes an air-conditioning side water pump 20, which is arranged on the water inlet pipe or the water outlet pipe of the air-conditioning side heat exchanger 19. The air-conditioning side water pump 20 is used to transport water from the external terminal device 31 to the air-conditioning side heat exchanger 19. The air-conditioning side water pump 20 is installed in the third space area 103, specifically at the third space area 103 corresponding to the second space area 102, that is, below the outdoor side heat exchanger 12.

[0083] In some embodiments, the outdoor unit further includes a second water pump bracket (not shown), and the air conditioner side water pump 20 is installed in the third space area 103 through the second water pump bracket. For example, the second water pump bracket can be a hard pipe at the inlet and outlet ends of the air conditioner side water pump 20, and the hard pipe plays a supporting role. The second water pump bracket can also be fixed to a bracket on the chassis 106, and the air conditioner side water pump 20 is installed on the second water pump bracket.

[0084] In some embodiments, Figure 4 As shown, the outdoor unit further includes a pressure buffer 35, and the pressure buffer 35 is used to adjust the water pressure between the air-conditioning side heat exchanger 19 and the external terminal device 31. The pressure buffer 35 is installed in the third space area 103, specifically the third space area 103 corresponding to the second space area 102, that is, below the outdoor side heat exchanger 12. For example, the pressure buffer 35 is an expansion tank, and the expansion tank here is only an example and is not intended to limit the present application.

[0085] Specifically, the air-conditioning side water pump 20 and the pressure buffer 35 are stacked in the height direction Z of the housing 10, and the air-conditioning side water pump 20 and the pressure buffer 35 are located at one end of the interior width direction X of the housing 10, and the air-conditioning side heat exchanger 19 is located at the other end of the interior width direction X of the housing 10. For example, the pressure buffer 35 is installed (such as horizontally installed) on the chassis 106, and the air-conditioning side water pump 20 is located above the pressure buffer 35. It should be noted that the horizontal installation is to extend along the length and width plane of the housing 10.

[0086] In some embodiments, Figure 5 As shown, the outdoor unit further includes a first reversing valve 21, which includes a first valve port 211, a second valve port 212, a third valve port 213 and a fourth valve port 214. The first reversing valve 21 is used to switch between the cooling mode and the heating mode. Figure 4 As shown, the first reversing valve 21 is installed in the third space area 103, specifically, in the third space area 103 corresponding to the second space area 102, that is, below the outdoor heat exchanger 12. For example, the first reversing valve 21 is a four-way valve, which is only an example and is not intended to limit the present invention.

[0087] In some embodiments, Figure 5 As shown, the outdoor unit further includes a first one-way valve 22 and a first throttling device 23, wherein the first one-way valve 22 and the first throttling device 23 are used for throttling and cooling the refrigerant in the cooling mode. Figure 4As shown, the first one-way valve 22 and the first throttling device 23 are installed in the third space area 103 , specifically, in the third space area 103 corresponding to the second space area 102 , that is, below the outdoor heat exchanger 12 .

[0088] like Figure 5 As shown, the outdoor unit further includes a second one-way valve 24 and a second throttling device 25, wherein the second one-way valve 24 and the second throttling device 25 are used for throttling and cooling the refrigerant in the heating mode. Figure 4 As shown, the second one-way valve 24 and the second throttling device 25 are installed in the third space area 103 , specifically, at the third space area 103 corresponding to the second space area 102 , that is, below the outdoor heat exchanger 12 .

[0089] For example, the first throttling device 23 and the second throttling device 25 are electronic expansion valves or thermal expansion valves. The electronic expansion valves and thermal expansion valves mentioned here are only examples and are not intended to limit the present invention.

[0090] In some embodiments, Figure 5 As shown, the outdoor unit further includes a liquid storage container 26, which includes a first interface 261, a second interface 262 and a third interface 263. The liquid storage container 26 is used to store liquid refrigerant. Figure 3 As shown, the liquid storage container 26 is installed in the third space area 103, specifically, the third space area 103 corresponding to the second space area 102, that is, below the outdoor heat exchanger 12. Specifically, the liquid storage container 26 is installed (for example, vertically installed) on the chassis 106.

[0091] In some embodiments, Figure 5 As shown, the outdoor unit further includes a second reversing valve 27, which includes a fifth valve port 271, a sixth valve port 272 and a seventh valve port 273. The second reversing valve 27 is used to adjust the amount of refrigerant entering the hot water side heat exchanger 14. Figure 3 As shown, the second reversing valve 27 is installed in the third space area 103 , specifically, in the third space area 103 corresponding to the second space area 102 , that is, below the outdoor heat exchanger 12 .

[0092] like Figure 5 As shown, the outdoor unit further includes a third reversing valve 28, which includes an eighth valve port 281, a ninth valve port 282 and a tenth valve port 283. The third reversing valve 28 is used to switch all or at least part of the heat of the refrigerant to be exchanged in the hot water side heat exchanger 14. Figure 3As shown, the third reversing valve 28 is installed in the third space area 103 , specifically, in the third space area 103 corresponding to the second space area 102 , that is, below the outdoor heat exchanger 12 .

[0093] For example, the second reversing valve 27 and the third reversing valve 28 are three-way valves, and the three-way valves herein are only examples and are not intended to limit the present invention.

[0094] In some embodiments, Figure 3 As shown, the outdoor unit further includes a gas-liquid separator 29, which is used to separate gaseous refrigerant and liquid refrigerant, and the gas-liquid separator 29 is installed in the third space area 103, specifically, the third space area 103 corresponding to the second space area 102, that is, below the outdoor heat exchanger 12. Specifically, the gas-liquid separator 29 is installed (for example, vertically installed) on the chassis 106.

[0095] In some embodiments, Figure 3 As shown, the outdoor unit further includes an electric control box 30, which is used to control the electric control components in the housing 10, such as the compressor 13, the hot water side water pump 15, the fan 18, the air conditioning side water pump 20, the first reversing valve 21, the first throttling device 23, the second throttling device 25, the second reversing valve 27 and the third reversing valve 28. The electric control box 30 is installed in the third space area 103, specifically, the third space area 103 corresponding to the second space area 102, that is, below the outdoor heat exchanger 12. Specifically, the electric control box 30 is installed (for example, vertically installed) on the chassis 106.

[0096] Furthermore, the main control board of the electric control box 30 is provided with a heat sink 301, and the heat sink 301 corresponds to the heat dissipation hole 171. For example, the heat sink 301 is a heat dissipation fin, which is only an example and is not intended to limit the present invention.

[0097] Completely, as Figure 3 and Figure 4 As shown, the main vibrating parts such as the compressor 13, the hot water side heat exchanger 14, the hot water side water pump 15, the air-conditioning side heat exchanger 19, the air-conditioning side water pump 20, the liquid storage container 26, the gas-liquid separator 29, the electric control box 30 and the pressure buffer 35 are fixed on the chassis 106, so that the outdoor unit has a low center of gravity and balanced weight, thereby improving the stability of the unit and reducing vibration and noise.

[0098] Through the above structural layout, the compressor 13, the hot water side heat exchanger 14, the hot water side water pump 15, the air conditioning side heat exchanger 19, the air conditioning side water pump 20, the first reversing valve 21, the first non-return valve 22, the first throttling device 23, the second non-return valve 24, the second throttling device 25, the liquid storage container 26, the second reversing valve 27, the third reversing valve 28, the gas-liquid separator 29, the electric control box 30 and the pressure buffer 35 are located in the space below the domestic water tank 11 and the outdoor heat exchanger 12, do not occupy the space of the outdoor heat exchanger 12 or the domestic water tank 11, the space layout is reasonable, will not affect the air volume and heat exchange efficiency of the outdoor heat exchanger 12, improve the space utilization rate, and improve the integration of the outdoor unit, realize the miniaturization of the product, can complete heating, cooling and preparation of domestic hot water, without additional equipment such as hydraulic modules and domestic hot water modules, reduce the complexity of installing multiple devices during the engineering installation process, and improve user experience.

[0099] like Figure 5As shown, the connection relationship between the above-mentioned components is as follows: the outlet 132 of the compressor 13 is connected to the fifth valve port 271 of the second reversing valve 27, the sixth valve port 272 of the second reversing valve 27 is connected to the refrigerant inlet 141 of the hot water side heat exchanger 14, and the seventh valve port 273 of the second reversing valve 27 is connected to the first valve port 211 of the first reversing valve 21; the refrigerant outlet 142 of the hot water side heat exchanger 14 is connected to the eighth valve port 281 of the third reversing valve 28, the ninth valve port 282 of the third reversing valve 28 is connected to the first valve port 211 of the first reversing valve 21, and the third reversing valve The tenth valve port 283 of the indoor water tank 28 is connected to the first interface 261 of the liquid storage container 26; the water outlet 112 of the domestic water tank 11 is connected to the first water inlet 143 of the hot water side heat exchanger 14 through the hot water side water pump 15, and the first water outlet 144 of the hot water side heat exchanger 14 is connected to the return water port 113 of the domestic water tank 11; the second valve port 212 of the first reversing valve 21 is connected to the first refrigerant port 121 of the outdoor heat exchanger 12; the second refrigerant port 122 of the outdoor heat exchanger 12 is connected to the second interface 262 of the liquid storage container 26 through the first one-way valve 22, The conducting direction of the first one-way valve 22 is toward the second interface 262 end of the liquid storage container 26, and the second refrigerant port 122 of the outdoor heat exchanger 12 is connected to the second interface 262 of the liquid storage container 26 through the second throttling device 25. The conducting direction of the first one-way valve 22 is toward the second interface 262 end of the liquid storage container 26; the third refrigerant port 191 of the air-conditioning side heat exchanger 19 is connected to the third interface 263 of the liquid storage container 26 through the first throttling device 23, and the third refrigerant port 191 of the air-conditioning side heat exchanger 19 is connected to the liquid storage container 26 through the second one-way valve 24. The third interface 263 of the air conditioner 26 is connected, and the conduction direction of the second one-way valve 24 is toward the third interface 263 end of the liquid storage container 26; the fourth refrigerant port 192 of the air conditioner side heat exchanger 19 is connected to the fourth valve port 214 of the first reversing valve 21, and the third valve port 213 of the first reversing valve 21 is connected to the inlet 131 of the compressor 13 through the gas-liquid separator 29; the outlet of the external terminal device 31 is connected to the second water inlet 193 of the air conditioner side heat exchanger 19 through the air conditioner side water pump 20, and the second water outlet 194 of the air conditioner side heat exchanger 19 is connected to the inlet of the external terminal device 31. It should be noted that the direction of the first one-way valve 22 and the second one-way valve 24 refers to the flow direction of the refrigerant, not the direction of the spatial position. In addition, except for the connection of the inlet and outlet, which has a refrigerant flow direction relationship, the connection between other interfaces, between interfaces and components, or between components is only a physical structure connection, and does not uniquely limit the refrigerant flow direction therein.

[0100] A heat pump is a device that utilizes the principle of heat transfer to transfer heat energy from a low-temperature heat source to heat energy from a high-temperature heat source. An embodiment of the utility model discloses an air-energy heat pump system, comprising the outdoor unit and the terminal device 31 described in the above embodiment, wherein the outdoor unit is not described in detail here.

[0101] In different situations, different valve ports will be connected, as follows:

[0102] like Figure 6 As shown, when full heat recovery is performed to produce domestic hot water in the cooling mode, the fifth valve port 271 of the second reversing valve 27 is connected to the sixth valve port 272, the eighth valve port 281 of the third reversing valve 28 is connected to the tenth valve port 283, the fourth valve port 214 of the first reversing valve 21 is connected to the third valve port 213, the first throttling device 23 is opened, and the second throttling device 25 is closed. That is, when hot water needs to be prepared quickly in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 first passes through the fifth valve port 271 and the sixth valve port 272 of the second reversing valve 27 and then enters the refrigerant inlet 141 of the hot water side heat exchanger 14, and the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 14, and becomes a medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the refrigerant outlet 142 of the hot water side heat exchanger 14 passes through the eighth valve port 281 and the tenth valve port 283 of the third reversing valve 28 and then enters the first interface 261 of the liquid storage container 26, and the first interface 261 of the liquid storage container 26 The medium-temperature liquid refrigerant output by the three interfaces 263 is throttled and cooled by the first throttling device 23 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the third refrigerant port 191 of the air-conditioning side heat exchanger 19. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19 passes through the fourth valve port 214 and the third valve port 213 of the first reversing valve 21, and then passes through the gas-liquid separator 29 and returns to the inlet 131 of the compressor 13, and circulates back and forth. The hot water side heat exchanger 14 is connected to the domestic water tank 11, so that all the condensation heat originally used for heat exchange with the air by the outdoor heat exchanger 12 can be recovered and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 12 and the air. The recovered heat is exchanged with the water in the domestic water tank 11 in the hot water side heat exchanger 14 to quickly prepare hot water, improve energy utilization, and increase the speed of hot water production.

[0103] like Figure 7As shown, when waste heat recovery is performed to produce domestic hot water in the cooling mode, the fifth valve port 271 of the second reversing valve 27 is connected to the sixth valve port 272, the eighth valve port 281 of the third reversing valve 28 is connected to the ninth valve port 282, the first valve port 211 of the first reversing valve 21 is connected to the second valve port 212, the fourth valve port 214 of the first reversing valve 21 is connected to the third valve port 213, the first throttling device 23 is opened, and the second throttling device 25 is closed. That is, when hot water needs to be prepared in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 first passes through the fifth valve port 271 and the sixth valve port 272 of the second reversing valve 27 and then enters the refrigerant inlet 141 of the hot water side heat exchanger 14. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 14 and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 142 of the hot water side heat exchanger 14 passes through the eighth valve port 281 and the ninth valve port 282 of the third reversing valve 28 and the first valve port 211 and the second valve port 212 of the first reversing valve 21 and then enters the first refrigerant port 121 of the outdoor heat exchanger 12. The medium-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 12 and becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant port 122 passes through the first one-way valve 22 and enters the second interface 262 of the liquid storage container 26. The medium-temperature liquid refrigerant output from the third interface 263 of the liquid storage container 26 is throttled and cooled by the first throttling device 23 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the third refrigerant port 191 of the air-conditioning side heat exchanger 19. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output from the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19 passes through the fourth valve port 214 and the third valve port 213 of the first reversing valve 21 and then returns to the inlet 131 of the compressor 13 through the gas-liquid separator 29, and circulates back and forth. The hot water side heat exchanger 14 is connected to the domestic water tank 11, so that at least part of the condensation heat originally used for heat exchange with the air by the outdoor heat exchanger 12 can be recovered and utilized during summer cooling, thereby avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 12 and the air. The recovered heat is exchanged with the water in the domestic water tank 11 in the hot water side heat exchanger 14 to prepare hot water, thereby improving energy utilization.

[0104] Specifically, Figure 7 and Figure 6 The difference between the shown embodiments is that Figure 7 In order to recycle at least part of the condensation heat originally used for heat exchange with air by the outdoor heat exchanger 12, Figure 6 The purpose is to recover and utilize all the condensation heat originally used by the outdoor heat exchanger 12 for heat exchange with the air.

[0105] like Figure 8As shown, when waste heat recovery is performed to produce domestic hot water in the cooling mode, the fifth valve port 271 of the second reversing valve 27 is respectively connected to the sixth valve port 272 and the seventh valve port 273, the eighth valve port 281 of the third reversing valve 28 is connected to the ninth valve port 282, the first valve port 211 of the first reversing valve 21 is connected to the second valve port 212, the fourth valve port 214 of the first reversing valve 21 is connected to the third valve port 213, the first throttling device 23 is opened, and the second throttling device 25 is closed. That is, when hot water needs to be prepared in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 enters the refrigerant inlet 141 of the hot water side heat exchanger 14 through the fifth valve port 271 and the sixth valve port 272 of the second reversing valve 27, and enters the first valve port 211 and the second valve port 212 of the outdoor heat exchanger 12 through the fifth valve port 271 and the seventh valve port 273 of the second reversing valve 27. The high-temperature gaseous refrigerant at the refrigerant port 121 is used for heat exchange with the water in the domestic water tank 11 in the hot water side heat exchanger 14 to prepare hot water and then becomes a medium-temperature gaseous refrigerant. The medium-temperature gaseous refrigerant outputted from the refrigerant outlet 142 of the hot water side heat exchanger 14 passes through the eighth valve port 281 and the ninth valve port 282 of the third reversing valve 28 and the first valve port 211 and the second valve port 212 of the first reversing valve 21 and then enters the first refrigerant port 121 of the outdoor heat exchanger 12. The medium-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 12 to become a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant port 122 of the outdoor heat exchanger 12 passes through the first one-way valve 22 and enters the second interface 262 of the liquid storage container 26. The medium-temperature liquid refrigerant output from the third interface 263 of the liquid storage container 26 passes through the first throttling device 23 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the first throttling device 23 of the air conditioner side heat exchanger 19. The third refrigerant port 191, the low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19 passes through the fourth valve port 214 and the third valve port 213 of the first reversing valve 21 and then returns to the inlet 131 of the compressor 13 through the gas-liquid separator 29, and circulates back and forth. The hot water side heat exchanger 14 is connected to the domestic water tank 11, so that at least part of the condensation heat originally used for heat exchange with the air by the outdoor side heat exchanger 12 is recycled and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor side heat exchanger 12 and the air. The recovered heat is exchanged with the water in the domestic water tank 11 in the hot water side heat exchanger 14 to prepare hot water, thereby improving energy utilization.

[0106] Specifically, Figure 8 and Figure 7 The difference between the shown embodiments is that Figure 8 In the embodiment shown, an additional refrigerant path enters the outdoor heat exchanger 12 after passing through the fifth valve port 271 and the seventh valve port 273 of the second reversing valve 27 and the first valve port 211 and the second valve port 212 of the first reversing valve 21, so that the amount of refrigerant entering the hot water side heat exchanger 14 can be better regulated, and the refrigerant coming out of the compressor 13 directly reaching the first reversing valve 21 can be guaranteed to be a gaseous refrigerant, while the refrigerant passing through the hot water side heat exchanger 14 may contain liquid refrigerant after heat exchange. Pure gaseous refrigerant can better ensure that the first reversing valve 21 has sufficient pressure difference for reversing, so that the pressure loss of the refrigerant pipeline is small, and the second reversing valve 27 is not easily affected by impurities, so that the system runs stably.

[0107] like Fig. 9As shown, when domestic hot water is produced in the heating mode, the fifth valve port 271 of the second reversing valve 27 is connected to the sixth valve port 272, the eighth valve port 281 of the third reversing valve 28 is connected to the ninth valve port 282, the first valve port 211 of the first reversing valve 21 is connected to the fourth valve port 214, the second valve port 212 of the first reversing valve 21 is connected to the third valve port 213, the first throttling device 23 is closed, and the second throttling device 25 is opened. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 first passes through the fifth valve port 271 and the sixth valve port 272 of the second reversing valve 27 and then enters the refrigerant inlet 141 of the hot water side heat exchanger 14. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 14, and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 142 of the hot water side heat exchanger 14 passes through the eighth valve port 281 and the ninth valve port 282 of the third reversing valve 28 and the first valve port 211 and the fourth valve port 214 of the first reversing valve 21 and then enters the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19. The medium-temperature gaseous refrigerant exchanges heat with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19. After heat exchange, it becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the third refrigerant port 191 of the air-conditioning side heat exchanger 19 passes through the second one-way valve 24 and enters the third interface 263 of the liquid storage container 26. The medium-temperature liquid refrigerant output from the second interface 262 of the liquid storage container 26 passes through the second throttling device 25 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 122 of the outdoor heat exchanger 12. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 12 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output from the first refrigerant port 121 of the outdoor heat exchanger 12 passes through the second valve port 212 and the third valve port 213 of the first reversing valve 21 and then returns to the inlet 131 of the compressor 13 through the gas-liquid separator 29, and circulates back and forth. The hot water side heat exchanger 14 is connected to the domestic water tank 11, so that hot water can be prepared while heating in winter, thereby improving energy utilization.

[0108] like Fig.10As shown, when domestic hot water is produced in the heating mode, the fifth valve port 271 of the second reversing valve 27 is respectively connected with the sixth valve port 272 and the seventh valve port 273, the eighth valve port 281 of the third reversing valve 28 is connected with the ninth valve port 282, the first valve port 211 of the first reversing valve 21 is connected with the fourth valve port 214, the second valve port 212 of the first reversing valve 21 is connected with the third valve port 213, the first throttling device 23 is closed, and the second throttling device 25 is opened. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 enters the refrigerant inlet 141 of the hot water side heat exchanger 14 after passing through the fifth valve port 271 and the sixth valve port 272 of the second reversing valve 27 in one way, and enters the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19 after passing through the fifth valve port 271 and the seventh valve port 273 of the second reversing valve 27 and the first valve port 211 and the fourth valve port 214 of the first reversing valve 21 in the other way. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 14, and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 142 of the hot water side heat exchanger 14 enters the first refrigerant port 2142 of the air-conditioning side heat exchanger 19 after passing through the eighth valve port 281 and the ninth valve port 282 of the third reversing valve 28 and the first valve port 211 and the fourth valve port 214 of the first reversing valve 21 At the four refrigerant ports 192, the medium-temperature gaseous refrigerant undergoes heat exchange with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19 and becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant outputted from the third refrigerant port 191 of the air-conditioning side heat exchanger 19 passes through the second one-way valve 24 and enters the third interface 263 of the liquid storage container 26. The medium-temperature liquid refrigerant outputted from the second interface 262 of the liquid storage container 26 passes through the second throttling device 25 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 122 of the outdoor heat exchanger 12. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 12 and becomes a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant outputted from the first refrigerant port 121 of the outdoor heat exchanger 12 passes through the second valve port 212 and the third valve port 213 of the first reversing valve 21 and then passes through the gas-liquid separator 29 and returns to the inlet 131 of the compressor 13, for a reciprocating cycle. The hot water side heat exchanger 14 is connected to the domestic water tank 11, so that hot water can be prepared while heating in winter, thereby improving energy utilization.

[0109] Specifically, Fig.10 and Fig. 9 The difference between the shown embodiments is that Fig.10In the embodiment shown, an additional path is provided to enter the air-conditioning side heat exchanger 19 after passing through the fifth valve port 271 and the seventh valve port 273 of the second reversing valve 27 and the first valve port 211 and the fourth valve port 214 of the first reversing valve 21, so that the amount of refrigerant entering the hot water side heat exchanger 14 can be better regulated, and the refrigerant coming out of the compressor 13 directly reaching the first reversing valve 21 can be guaranteed to be a gaseous refrigerant, while the refrigerant passing through the hot water side heat exchanger 14 may contain liquid refrigerant after heat exchange. Pure gaseous refrigerant can better ensure that the first reversing valve 21 has sufficient pressure difference for reversing, so that the pressure loss of the refrigerant pipeline is small, and the second reversing valve 27 is not easily affected by impurities, so that the system runs stably.

[0110] like Fig.11 As shown, in the pure hot water mode, the fifth valve port 271 of the second reversing valve 27 is connected with the sixth valve port 272, the eighth valve port 281 of the third reversing valve 28 is connected with the tenth valve port 283, the second valve port 212 of the first reversing valve 21 is connected with the third valve port 213, the first throttling device 23 is closed, and the second throttling device 25 is opened. That is, when only hot water needs to be prepared, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 first passes through the fifth valve port 271 and the sixth valve port 272 of the second reversing valve 27 and then enters the refrigerant inlet 141 of the hot water side heat exchanger 14, and the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 14 to prepare hot water, and after preparing hot water, it becomes a medium-temperature liquid refrigerant, and the medium-temperature liquid refrigerant output from the refrigerant outlet 142 of the hot water side heat exchanger 14 passes through the eighth valve port 281 and the tenth valve port 283 of the third reversing valve 28 and then enters the first inlet 141 of the liquid storage container 26. The medium-temperature liquid refrigerant outputted from the second interface 262 of the liquid storage container 26 passes through the second throttling device 25 to be throttled and cooled to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 122 of the outdoor heat exchanger 12. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 12 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant outputted from the first refrigerant port 121 of the outdoor heat exchanger 12 passes through the second valve port 212 and the third valve port 213 of the first reversing valve 21 and then passes through the gas-liquid separator 29 and returns to the inlet 131 of the compressor 13, and the circulation is repeated. The hot water side heat exchanger 14 is connected to the domestic water tank 11, so that all the heat from the compressor 13 can be used alone in the hot water side heat exchanger 14 for heat exchange with the water in the domestic water tank 11, and the energy is used in a targeted manner. The refrigerant loop is shortened when making hot water, and it does not need to pass through the air conditioning side heat exchanger 19, and the heat exchange efficiency is higher.

[0111] like Fig.12As shown, in the cooling mode, the fifth valve port 271 of the second reversing valve 27 is connected to the seventh valve port 273, the first valve port 211 of the first reversing valve 21 is connected to the second valve port 212, the fourth valve port 214 of the first reversing valve 21 is connected to the third valve port 213, the first throttling device 23 is opened, and the second throttling device 25 is closed. That is, when cooling is performed alone in summer, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 passes through the fifth valve port 271 and the seventh valve port 273 of the second reversing valve 27 and the first valve port 211 and the second valve port 212 of the first reversing valve 21, and then enters the first refrigerant port 121 of the outdoor heat exchanger 12. The high-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 12 to become a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant port 122 of the outdoor heat exchanger 12 passes through the first one-way valve 22 and then enters the second interface 262 of the liquid storage container 26. The third interface 263 of the liquid storage container 26 The output medium-temperature liquid refrigerant is throttled and cooled by the first throttling device 23 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the third refrigerant port 191 of the air-conditioning side heat exchanger 19. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output from the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19 passes through the fourth valve port 214 and the third valve port 213 of the first reversing valve 21, and then passes through the gas-liquid separator 29 and returns to the inlet 131 of the compressor 13, and circulates back and forth.

[0112] like Fig.13As shown, in the heating mode, the fifth valve port 271 of the second reversing valve 27 is connected with the seventh valve port 273, the first valve port 211 of the first reversing valve 21 is connected with the fourth valve port 214, the second valve port 212 of the first reversing valve 21 is connected with the third valve port 213, the first throttling device 23 is closed, and the second throttling device 25 is opened. That is, when heating alone is used in winter, the high-temperature gaseous refrigerant output from the outlet 132 of the compressor 13 passes through the fifth valve port 271 and the seventh valve port 273 of the second reversing valve 27 and the first valve port 211 and the fourth valve port 214 of the first reversing valve 21 and then enters the fourth refrigerant port 192 of the air-conditioning side heat exchanger 19. The high-temperature gaseous refrigerant is converted into medium-temperature liquid refrigerant after heat exchange with the circulating water in the terminal device 31 in the air-conditioning side heat exchanger 19. The medium-temperature liquid refrigerant output from the third refrigerant port 191 of the air-conditioning side heat exchanger 19 passes through the second one-way valve 24 and then enters the first refrigerant port 26 of the liquid storage container 26. Three interfaces 263, the medium-temperature liquid refrigerant output from the second interface 262 of the liquid storage container 26 is throttled and cooled by the second throttling device 25 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 122 of the outdoor heat exchanger 12. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 12 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output from the first refrigerant port 121 of the outdoor heat exchanger 12 passes through the second valve port 212 and the third valve port 213 of the first reversing valve 21, and then returns to the inlet 131 of the compressor 13 through the gas-liquid separator 29, and repeats the cycle.

[0113] It should be noted here that the above-mentioned high, medium and low temperatures are only relative expressions, and the gaseous refrigerant can also refer to a gas-liquid two-phase state or a gaseous state, which is not limited here.

[0114] By implementing the utility model, the following beneficial effects are achieved:

[0115] The utility model constructs a first space area 101, a second space area 102 and a third space area 103 inside the outdoor unit, wherein the second space area 102 is located on the horizontal side of the first space area 101, and the third space area 103 is located below the first space area 101 and the second space area 102, and the domestic water tank 11 is vertically installed in the first space area 101, and the outdoor heat exchanger 12 is installed in the second space area 102, so that the internal space layout of the outdoor unit is reasonable, the water tank side does not need air intake, and can be installed against the wall to be applied to the installation space with poor ventilation environment, and the gaps left at both ends during the original installation are changed to gaps left on one side, so that the installation space has wide adaptability and can save installation space. At the same time, since the outdoor heat exchanger 12 is set separately, it can also ensure that there is enough ventilation on the heat exchanger side to ensure heat exchange efficiency, and avoid the heat exchange efficiency of the outdoor heat exchanger 12 from decreasing due to insufficient ventilation space. In addition, the domestic water tank 11 is installed vertically, which can improve the water discharge volume, water discharge rate and hot water supply capacity.

[0116] Moreover, the compressor 13, the hot water side heat exchanger 14 and the hot water side water pump 15 are installed in the third space area 103, which makes full use of the lower space of the domestic water tank 11 and the outdoor heat exchanger 12, does not occupy the space of the outdoor heat exchanger 12 or the domestic water tank 11, and has a reasonable spatial layout, which will not affect the air volume and heat exchange efficiency of the outdoor heat exchanger 12, thereby improving space utilization, and improving the integration of the outdoor unit, thereby realizing miniaturization of the product.

[0117] It can be understood that the above embodiments only express some implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. An outdoor unit, characterized in that: include: A shell, wherein the interior of the shell includes a first space area, a second space area and a third space area, the second space area is located on a horizontal side of the first space area, and the third space area is located below the first space area and the second space area respectively; A domestic water tank, which is used to store domestic water and is vertically installed in the first space area; An outdoor heat exchanger, the outdoor heat exchanger is used to achieve heat exchange between the refrigerant and the outside air, and the outdoor heat exchanger is installed in the second space area; A compressor, a hot water side heat exchanger and a hot water side water pump, the compressor is used to provide refrigerant for the outdoor side heat exchanger and the hot water side heat exchanger, the hot water side heat exchanger is used to prepare hot water by heat exchange between the refrigerant and the water in the domestic water tank, the hot water side water pump is used to provide power for the water circulation between the domestic water tank and the hot water side heat exchanger, the compressor, the hot water side heat exchanger and the hot water side water pump are installed in the third space area.

2. The outdoor unit according to claim 1, characterized in that: The housing further includes a chassis located in the third space area, and the outdoor unit further includes: A first heat exchanger bracket is fixed on the chassis, and the hot water side heat exchanger is installed on the first heat exchanger bracket.

3. The outdoor unit according to claim 1, characterized in that: The outdoor unit further comprises: A first water pump bracket, the hot water side water pump is installed in the third space area through the first water pump bracket.

4. The outdoor unit according to claim 1, characterized in that: The outdoor unit further comprises: The air-conditioning side heat exchanger is used to realize heat exchange between the refrigerant and the water in the external terminal device, and the air-conditioning side heat exchanger is installed in the third space area.

5. The outdoor unit according to claim 4, characterized in that: The outdoor unit further comprises: An air-conditioning side water pump, the air-conditioning side water pump is used to provide power for the water circulation between the air-conditioning side heat exchanger and the external terminal device, and the air-conditioning side water pump is installed in the third space area.

6. The outdoor unit according to claim 4, characterized in that: The outdoor unit further comprises: A pressure buffer, which is used to adjust the water channel pressure between the air-conditioning side heat exchanger and the external terminal device, and the pressure buffer is installed in the third space area.

7. The outdoor unit according to claim 1, characterized in that: The outdoor unit further comprises: A liquid storage container, the liquid storage container is used to store liquid refrigerant, and the liquid storage container is installed in the third space area; And / or, a gas-liquid separator, the gas-liquid separator is used to separate gaseous refrigerant and liquid refrigerant, and the gas-liquid separator is installed in the third space area.

8. The outdoor unit according to claim 1, characterized in that: The outdoor unit further comprises: a partition, the partition being arranged inside the shell along a height direction of the shell and connected to the shell to separate the first space area from the second space area; A water receiving tray is used to collect condensed water. The water receiving tray is arranged inside the shell along the length direction of the shell and is connected to the partition and the shell to separate the second space area and the third space area.

9. The outdoor unit according to claim 1, characterized in that: The hot water side heat exchanger is a shell and tube heat exchanger.

10. An air energy heat pump system, characterized in that: The outdoor unit comprises the outdoor unit described in any one of claims 1 to 9.

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