Outdoor unit and heat pump system

Abstract

The utility model discloses an outdoor unit and a heat pump system. The outdoor unit comprises a shell, a water tank, a hot water side heat exchanger and a gas-liquid separator. The water tank is used for storing domestic hot water and installed in the shell. The hot water side heat exchanger is used for preparing hot water through heat exchange between refrigerants and water in the water tank, the gas-liquid separator is used for separating gaseous refrigerants and liquid refrigerants, the hot water side heat exchanger and the gas-liquid separator are installed in the shell and located below the water tank correspondingly, and the hot water side heat exchanger is arranged on the periphery of the gas-liquid separator in a surrounding mode. According to the utility model, the layout optimization of the whole parts is facilitated, the utilization rate of the parts in the vertical space can be improved, the space of the unit in the horizontal direction is reduced, and the miniaturization design is realized. And the hot water side heat exchanger is wound on the periphery of the gas-liquid separator, so that occupation of installation space of other parts can be reduced, more space is provided for arrangement of pipelines, and the possibility of mutual interference and collision between the pipelines is reduced.

Description

Technical Field

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

[0002] Existing heat pumps are widely used to prepare hot water, and usually a domestic hot water tank is set in the heat pump host to store a large amount of hot water. However, the layout of system components such as heat exchangers is unreasonable, resulting in the problem that the overall heat pump host is too large. Utility Model Content

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

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

[0005] shell;

[0006] A water tank, the water tank is used to store domestic water, and the water tank is installed inside the shell;

[0007] A hot water side heat exchanger and a gas-liquid separator, wherein the hot water side heat exchanger is used to prepare hot water by heat exchange between the refrigerant and the water in the water tank, and the gas-liquid separator is used to separate the gaseous refrigerant and the liquid refrigerant. The hot water side heat exchanger and the gas-liquid separator are installed inside the shell and located below the corresponding water tank, wherein the hot water side heat exchanger is arranged around the periphery of the gas-liquid separator.

[0008] In one embodiment, the outdoor unit further comprises:

[0009] 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 inside the shell.

[0010] In one embodiment, the outdoor unit further comprises:

[0011] 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 inside the shell.

[0012] In one embodiment, the outdoor unit further comprises:

[0013] A pressure regulator, the pressure regulator is used to adjust the water pressure between the air-conditioning side heat exchanger and the external terminal device, and the pressure regulator is installed inside the shell.

[0014] In one embodiment, the outdoor unit further comprises:

[0015] A hot water side water pump, the hot water side water pump is used to provide power for the water circulation between the water tank and the hot water side heat exchanger, and the hot water side water pump is installed inside the shell and is located below the water tank.

[0016] In one of the embodiments, the hot water side water pump is located at one end of the inner width direction of the shell, and the hot water side heat exchanger and the gas-liquid separator are located at the other end of the inner width direction of the shell.

[0017] In one embodiment, the housing includes a chassis;

[0018] The outdoor unit further comprises:

[0019] A water tank bracket, wherein the water tank bracket is fixed on the chassis, and the water tank is installed on the water tank bracket to form a accommodating space between the bottom of the water tank and the chassis, and the hot water side heat exchanger, the gas-liquid separator and the hot water side water pump are located in the accommodating space.

[0020] In one embodiment, the housing includes a chassis, and the gas-liquid separator is vertically mounted on the chassis.

[0021] In one of the embodiments, the hot water side heat exchanger is a shell and tube heat exchanger, and the shell includes a bottom plate;

[0022] The outdoor unit further comprises:

[0023] A first heat exchanger bracket is fixed on the chassis, and the shell-and-tube heat exchanger is installed on the first heat exchanger bracket.

[0024] The utility model also constructs a heat pump system, comprising any of the outdoor units described above.

[0025] By implementing the utility model, the following beneficial effects are achieved:

[0026] The utility model arranges the hot water side heat exchanger and the gas-liquid separator to be located below the corresponding water tank, which is beneficial to the layout optimization of the overall components, can improve the utilization rate of the components in the vertical space, and at the same time reduce the space of the unit in the horizontal direction to achieve a miniaturized design.

[0027] Furthermore, the hot water side heat exchanger is arranged around the periphery of the gas-liquid separator, which can reduce the occupation of the installation space of other components, provide more space for the layout of pipelines, and reduce the possibility of mutual interference and collision between pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0029] Figure 1 It is a schematic diagram of the overall structure of the outdoor unit of the utility model;

[0030] Figure 2 It is a schematic diagram of the internal structure of the outdoor unit of the utility model;

[0031] Figure 3 yes Figure 2 An exploded view of the outdoor unit shown;

[0032] Figure 4 yes Figure 2 The schematic structural diagram of the gas-liquid separator and the heat return side heat exchanger in the outdoor unit shown is fixed on the chassis;

[0033] Figure 5 It is a front view schematic diagram of the structure of the outdoor unit of the utility model;

[0034] Figure 6 It is a back schematic diagram of the structure of the outdoor unit of the utility model;

[0035] Figure 7 Schematic diagram of the positions of the first cavity and the second cavity inside the shell of the outdoor unit of the utility model, wherein the dotted line is a virtual boundary, and the first space, the second space and the water tank space are connected;

[0036] Figure 8 It is a schematic diagram of the air energy heat pump system of the utility model;

[0037] Fig. 9 It 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;

[0038] Fig.10 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;

[0039] Fig.11 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;

[0040] Fig.12 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;

[0041] Fig.13 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;

[0042] Fig.14 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;

[0043] Fig.15 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;

[0044] Fig.16 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

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] like Figures 1 to 6 As shown, an embodiment of the utility model discloses an outdoor unit, including a housing 10, a water tank 11, a hot water side heat exchanger 12 and a gas-liquid separator 13, which are specifically as follows:

[0051] The water tank 11 is used to store domestic hot water, and the water tank 11 is installed inside the housing 10. The hot water side heat exchanger 12 is used to prepare hot water by heat exchange between the refrigerant and the water in the water tank 11, and the gas-liquid separator 13 is used to separate the gaseous refrigerant and the liquid refrigerant. The hot water side heat exchanger 12 and the gas-liquid separator 13 are installed inside the housing 10 and are located below the corresponding water tank 11, wherein the hot water side heat exchanger 12 is arranged around the periphery of the gas-liquid separator 13.

[0052] In this embodiment, the hot water side heat exchanger 12 and the gas-liquid separator 13 are arranged below the water tank 11, which is beneficial to the overall component layout optimization, can improve the utilization rate of components in the vertical space, and reduce the space of the unit in the horizontal direction, thereby realizing a miniaturized design.

[0053] It is also convenient for designing and arranging the pipelines, which is beneficial for reducing the pipelines between the hot water side heat exchanger 12 and the 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.

[0054] Furthermore, the hot water side heat exchanger 12 is disposed around the periphery of the gas-liquid separator 13, which can reduce the occupation of the installation space of other components, provide more space for the arrangement of pipelines, and reduce the possibility of mutual interference and collision between pipelines.

[0055] In some embodiments, the water tank 11 is vertically arranged. Since the density of hot water is lower than that of cold water, compared with the horizontal arrangement of the water tank 11, the vertical arrangement of the water tank 11 is conducive to allowing the prepared hot water to quickly rise to the top of the 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 water tank 11 is a metal tank body, such as a stainless steel cylindrical tank body. The outer wall surface of the water tank 11 is wrapped with thermal insulation cotton, such as polyurethane foam, and the heat loss of the prepared hot water is prevented by wrapping the thermal insulation cotton. The stainless steel cylindrical tank body, the thermal insulation cotton and the polyurethane foam here are only examples and are not intended to be a limitation of the present utility model.

[0056] In some embodiments, an electric auxiliary heater, such as an electric heating rod, is provided in the water tank 11. In order to monitor the temperature in the water tank 11 in real time, a temperature detector, such as a thermometer, is provided in the water tank 11. The electric heating rod and the thermometer are merely examples and are not intended to limit the present invention.

[0057] When water is heated, scale will be generated, and the scale will cause corrosion to the water tank 11. A water softening device and / or an anti-corrosion layer is provided in the 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 water tank 11, the magnesium rod will release magnesium ions, so that the water alkali and scale in the water tank 11 are reduced, effectively preventing a large amount of scale from being attached to the inner wall of the water tank 11, thereby avoiding corrosion to the water tank 11.

[0058] In some embodiments, a pressure relief device is provided on the top of the water tank 11, and the pressure relief device is used to release the pressure inside the 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.

[0059] In some embodiments, Figure 8 As shown, the water tank 11 includes a cold water inlet 111, a water outlet 112, a return water port 113 and a hot water outlet 114. In order to further reduce the pipelines between the hot water side heat exchanger 12 and the water tank 11, the water outlet 112 is located at the bottom of the water tank 11, and the return water port 113 is located in the middle of the water tank 11.

[0060] In some embodiments, Figure 8 As shown, the hot water side heat exchanger 12 includes a refrigerant inlet 121, a refrigerant outlet 122 connected to the refrigerant inlet 121, a first water inlet 123 and a first water outlet 124 connected to the first water inlet 123, the water outlet 112 is connected to the first water inlet 123, the first water outlet 124 is connected to the return water port 113, there is a space between the water tank 11 and the corner inside the shell 10, and the pipeline connecting the first water outlet 124 to the return water port 113 is located in the space to make full use of the space in the corner. For example, the water tank 11 is cylindrical, and the cylindrical shape here is only an example and is not a limitation of the present application.

[0061] In some embodiments, Figure 2 , Figure 3 or Figure 6As shown, the outdoor unit also includes a hot water side water pump 14, which is arranged in the water inlet pipe or the water outlet pipe of the hot water side heat exchanger 12. The hot water side water pump 14 is used to provide power for the water circulation between the water tank 11 and the hot water side heat exchanger 12. The hot water side water pump 14 is installed inside the outer shell 10 and is located below the corresponding water tank 11.

[0062] In some embodiments, the housing 10 includes a chassis 103, and the chassis 103 is used to be fixed on an external fixture, such as fixed on the ground. The outdoor unit also includes a first water pump bracket (not shown), and the hot water side water pump 14 is installed at the corresponding lower part of the water tank 11 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 14, and the hard pipe plays a supporting role. The first water pump bracket can also be fixed to a bracket on the chassis 103, and the hot water side water pump 14 is installed on the first water pump bracket.

[0063] In some embodiments, Figure 2 As shown, the hot water side water pump 14 is located at one end of the inner width direction X of the shell 10 , and the hot water side heat exchanger 12 and the gas-liquid separator 13 are located at the other end of the inner width direction X of the shell 10 .

[0064] In some embodiments, Figure 2 , Figure 3 or Figure 6 As shown, the outdoor unit also includes a water tank bracket 15, and the water tank bracket 15 is fixed on the chassis 103. The water tank 11 is installed on the water tank bracket 15 to form a accommodating space between the bottom of the water tank 11 and the chassis 103, and the hot water side heat exchanger 12, the gas-liquid separator 13 and the hot water side water pump 14 are located in the accommodating space.

[0065] In some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, the gas-liquid separator 13 is vertically mounted on the chassis 103, and the hot water side heat exchanger 12 is a shell-and-tube heat exchanger, which extends along the height direction Z inside the shell 10 and is arranged around the periphery of the gas-liquid separator 13 to make full use of the peripheral space of the gas-liquid separator 13. The pipeline inside the shell-and-tube heat exchanger can use 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 water tank 11. The shell-and-tube heat exchanger here is only an example and is not intended to limit the present utility model.

[0066] Furthermore, the outdoor unit further includes a first heat exchanger bracket 16 , which is fixed on the chassis 103 , and the shell-and-tube heat exchanger is installed on the first heat exchanger bracket 16 .

[0067] In some embodiments, Figure 2 , Figure 3 or Figure 5 As shown, the outdoor unit further includes an outdoor heat exchanger 17, and the outdoor heat exchanger 17 is used to realize heat exchange between the refrigerant and the outside air. The outdoor heat exchanger 17 and the water tank 11 are installed on both sides of the inner length direction Y of the shell 10. For example, the outdoor heat exchanger 17 is a finned heat exchanger, and the finned heat exchanger here is only an example and is not intended to limit the present invention.

[0068] This embodiment makes the internal space layout of the outdoor unit reasonable. 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. The installation space has wide adaptability and can save installation space. At the same time, since the outdoor heat exchanger 17 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 17 from decreasing due to insufficient ventilation space.

[0069] Moreover, the hot water side heat exchanger 12, the gas-liquid separator 13 and the hot water side water pump 14 fully utilize the lower space of the water tank 11 and the outdoor heat exchanger 17, do not occupy the space of the outdoor heat exchanger 17 or the 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 17, thereby improving space utilization, and improving the integration of the outdoor unit, thereby realizing miniaturization of the product.

[0070] In some embodiments, Figure 5 As shown, the outdoor heat exchanger 17 and the water tank 11 are arranged in a stepped manner inside the housing 10. Figure 7 As shown, a first space 1021 and a second space 1022 of different vertical lengths are formed in the lower area inside the shell 10, the first space 1021 is located below the outdoor heat exchanger 17, and the second space 1022 is located below the water tank 11, wherein the vertical length of the first space 1021 is greater than the vertical length of the second space 1022.

[0071] In this embodiment, system components with different height requirements can be placed in the first space 1021 and the second space 1022, so that the internal space layout of the outdoor host is reasonable, which solves the problem of insufficient internal space of the outdoor host when the water tank 11 is built into the outdoor host, improves space utilization, and achieves miniaturization.

[0072] Specifically, Figure 5 As shown, the height of the water tank 11 is greater than the height of the outdoor heat exchanger 17, and the lowest point of the water tank 11 is lower than the lowest point of the outdoor heat exchanger 17, thereby making full use of the internal space of the outdoor unit to increase the height of the water tank 11 and improve the water volume.

[0073] In some embodiments, Figure 7 As shown, a first cavity 101 and a second cavity 102 are formed inside the housing 10, the outdoor heat exchanger 17 is located in the first cavity 101, and the water tank 11, the hot water side heat exchanger 12 and the gas-liquid separator 13 are located in the second cavity 102. For example, the first cavity 101 is rectangular, and the second cavity 102 is "L" shaped, and the rectangle and the "L" shape here are only examples and are not intended to limit the present application.

[0074] The first space 1021, the second space 1022 and the water tank space 1023 on the side where the water tank 11 is located constitute the second cavity 102. The first space 1021, the second space 1022 and the water tank space 1023 on the side where the water tank 11 is located may be separated by a structure such as a partition or may not be separated by a structure such as a partition.

[0075] Specifically, Figure 5 As shown, the outdoor unit further includes a partition 18 , which is disposed between the outdoor heat exchanger 17 and the water tank 11 along a height direction Z of the housing 10 and is connected to the housing 10 .

[0076] The outdoor unit further includes a water receiving pan 19 for collecting condensed water, the water receiving pan 19 is disposed at the bottom of the outdoor heat exchanger 17 along the length direction Y of the housing 10, and is connected to the partition 18 and the housing 10. The partition 18, the water receiving pan 19 and the housing 10 define the first cavity 101 and the second cavity 102.

[0077] In some embodiments, the water tank 11 extends to the second space 1022 and is fixedly connected to the bottom plate 103 .

[0078] In some embodiments, Figure 2 , Figure 3 or Figure 5 As shown, the outdoor unit also includes a fan 20, which is used to drive external air to exchange heat with the outdoor heat exchanger 17. The fan 20 is installed on one side of the interior of the outer shell 10 where the outdoor heat exchanger 17 is located, that is, in the first cavity 101.

[0079] Accordingly, if Figure 1 As shown, the first surface of the shell 10 corresponding to the first cavity 101 is provided with an air inlet (not shown), and the second surface is provided with an air outlet 104. For example, the side of the shell 10 is provided with the air inlet, and the front is provided with the air outlet 104. The side and the front here are only examples and are not intended to limit the present application. It can be any two of the front, the side and the back.

[0080] In some embodiments, Figure 2 As shown, the water receiving tray 19 is provided with a heat dissipation hole 191, and the heat dissipation hole 191 connects the first cavity 101 and the second cavity 102. When the fan 20 is started, the first cavity 101 is negative pressure, and the hot air generated by the components in the second cavity 102 can be discharged to the outside.

[0081] In some embodiments, Figure 6 As shown, the outdoor unit further includes a compressor 21 , which is used to compress the refrigerant. The compressor 21 is installed inside the housing 10 and is located below the outdoor heat exchanger 17 , that is, in the second cavity 102 .

[0082] In some embodiments, the outdoor main unit further includes a compressor bracket (not shown), the compressor bracket is fixed on the chassis 103, and the compressor 21 is installed (eg, vertically installed) on the compressor bracket.

[0083] In some embodiments, Figure 2 , Figure 3 or Figure 5 As shown, the outdoor unit further includes an air-conditioning side heat exchanger 22, and the air-conditioning side heat exchanger 22 is used to realize heat exchange between the refrigerant and the water in the external terminal device 35. The air-conditioning side heat exchanger 22 is installed inside the housing 10 and is located below the outdoor side heat exchanger 17, that is, in the second cavity 102. For example, the air-conditioning side heat exchanger 22 is a plate heat exchanger, and the external terminal device 35 may include a fan and / or floor heating installed indoors, and further may include a hydraulic module connected between the air-conditioning side heat exchanger 22 and the fan and / or floor heating. The plate heat exchanger, the fan, the floor heating and the hydraulic module here are only examples and are not intended to limit the present invention.

[0084] In some embodiments, Figure 2 , Figure 3 or Figure 5 As shown, the outdoor unit further includes a second heat exchanger bracket 23 , which is fixed on the chassis 103 , and the air-conditioning side heat exchanger 22 is installed (eg, vertically installed) on the second heat exchanger bracket 23 .

[0085] In some embodiments, Figure 6 As shown, the outdoor unit also includes an air-conditioning side water pump 24, which is arranged in the water inlet pipe or the water outlet pipe of the air-conditioning side heat exchanger 22. The air-conditioning side water pump 24 is used to provide power for the water circulation between the air-conditioning side heat exchanger 22 and the external terminal device 35. The air-conditioning side water pump 24 is installed inside the outer shell 10 and is located below the outdoor side heat exchanger 17, that is, in the second cavity 102.

[0086] In some embodiments, Figure 6 As shown, the outdoor unit further includes a pressure regulator 25, and the pressure regulator 25 is used to adjust the water pressure between the air-conditioning side heat exchanger 22 and the external terminal device 35. For example, the air-conditioning side water pump 24 is arranged in the water inlet pipeline of the air-conditioning side heat exchanger 22, and the pressure regulator 25 is arranged at the inlet end of the air-conditioning side water pump 24. The pressure regulator 25 is installed inside the housing 10 and is located below the outdoor side heat exchanger 17, that is, in the second cavity 102. For example, the pressure regulator 25 is an expansion tank, and the expansion tank here is only an example and is not intended to limit the present application.

[0087] Specifically, the air-conditioning side water pump 24 and the pressure regulator 25 are stacked in the height direction Z of the housing 10, and the air-conditioning side water pump 24 and the pressure regulator 25 are located at one end of the interior width direction X of the housing 10, and the plate heat exchanger is located at the other end of the interior width direction X of the housing 10. For example, the pressure regulator 25 is installed (such as horizontally installed) on the chassis 103, and the air-conditioning side water pump 24 is located above the pressure regulator 25. It should be noted that the horizontal installation is to extend along the length and width plane of the housing 10.

[0088] In some embodiments, Figure 8 As shown, the outdoor unit further includes a first reversing valve 26, which is used to switch between the cooling mode and the heating mode, and the first reversing valve 26 is installed inside the housing 10 and is located below the outdoor heat exchanger 17, that is, in the second cavity 102. For example, the first reversing valve 26 is a four-way valve, which is only an example and is not intended to limit the present invention.

[0089] In some embodiments, Figure 8 As shown, the outdoor unit also includes a first one-way valve 27 and a first throttling device 28, and the first one-way valve 27 and the first throttling device 28 are used for throttling and cooling in the cooling mode. As shown in the figure, the first one-way valve 27 and the first throttling device 28 are installed inside the shell 10 and are located below the outdoor heat exchanger 17, that is, in the second cavity 102.

[0090] The outdoor unit also includes a second one-way valve 29 and a second throttling device 30, which are used for throttling and cooling in the heating mode. As shown in the figure, the second one-way valve 29 and the second throttling device 30 are installed inside the shell 10 and are located below the outdoor heat exchanger 17, that is, in the second cavity 102.

[0091] For example, the first throttling device 28 and the second throttling device 30 are electronic expansion valves or thermal expansion valves, and the electronic expansion valves and thermal expansion valves herein are only examples and are not intended to limit the present invention. It should be noted that the directions of the first one-way valve 27 and the second one-way valve 29 refer to the flow direction of the refrigerant, not the direction of the spatial position.

[0092] In some embodiments, Figure 8 As shown, the outdoor unit also includes a second reversing valve 31, which is used to switch the flow direction of the refrigerant coming out of the compressor 21 to regulate the amount of refrigerant entering the hot water side heat exchanger 12. The second reversing valve 31 is installed inside the outer shell 10 and is located below the outdoor side heat exchanger 17, that is, in the second cavity 102.

[0093] like Figure 8 As shown, the outdoor unit also includes a third reversing valve 32, and the third reversing valve 32 is used to switch all or at least part of the heat of the refrigerant for heat exchange in the hot water side heat exchanger 12. As shown in the figure, the third reversing valve 32 is installed inside the outer shell 10 and is located below the outdoor side heat exchanger 17, that is, in the second cavity 102.

[0094] For example, the second reversing valve 31 and the third reversing valve 32 are three-way valves, and the three-way valves herein are only examples and are not intended to limit the present invention.

[0095] In some embodiments, Figure 2 , Figure 3 or Figure 5As shown, the outdoor unit further includes a liquid storage container 33, the liquid storage container 33 is used to store liquid refrigerant, and the liquid storage container 33 is installed inside the housing 10 and located below the outdoor heat exchanger 17, that is, in the second cavity 102. Specifically, the liquid storage container 33 is installed (e.g., vertically installed) on the chassis 103.

[0096] In some embodiments, Figure 2 , Figure 3 or Figure 5 As shown, the outdoor unit further includes an electric control box 34, which is used to control various electric control components in the housing 10, such as the compressor 21, the hot water side water pump 14, the fan 20, the air conditioning side water pump 24, the first reversing valve 26, the first throttling device 28, the second throttling device 30, the second reversing valve 31 and the third reversing valve 32. The electric control box 34 is installed inside the housing 10 and is located below the outdoor heat exchanger 17, that is, in the second cavity 102. Specifically, the electric control box 34 is installed (e.g., vertically installed) on the chassis 103.

[0097] Furthermore, the main control board of the electric control box 34 is provided with a heat sink corresponding to the heat sink 191. For example, the heat sink is a heat sink fin, which is only an example and is not intended to limit the present invention.

[0098] In some embodiments, the main vibrating parts including the hot water side heat exchanger 12, the gas-liquid separator 13, the hot water side water pump 14, the compressor 21, the air-conditioning side heat exchanger 22, the air-conditioning side water pump 24, the pressure regulator 25, the liquid storage container 33 and the electrical control box 34 are fixed on the chassis 103, 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.

[0099] Through the above structural layout, the compressor 21, the hot water side heat exchanger 12, the hot water side water pump 14, the air conditioning side heat exchanger 22, the air conditioning side water pump 24, the pressure regulator 25, the first reversing valve 26, the first non-return valve 27, the first throttling device 28, the second non-return valve 29, the second throttling device 30, the gas-liquid separator 13, the second reversing valve 31, the third reversing valve 32, the liquid storage container 33 and the electric control box 34 are located in the space below the water tank 11 and the outdoor heat exchanger 17, do not occupy the space of the outdoor heat exchanger 17 or the water tank 11, the space layout is reasonable, will not affect the air volume and heat exchange efficiency of the outdoor heat exchanger 17, 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.

[0100] like Figure 8 As shown, the water tank 11 includes a cold water inlet 111, a water outlet 112, a return water port 113 and a hot water outlet 114; the hot water side heat exchanger 12 includes a refrigerant inlet 121, a refrigerant outlet 122 connected to the refrigerant inlet 121, a first water inlet 123 and a first water outlet 124 connected to the first water inlet 123; the outdoor side heat exchanger 17 includes a first refrigerant port 171 and a second refrigerant port 172 connected to the first refrigerant port 171; the air conditioning side heat exchanger 22 includes a third refrigerant port 221, a fourth refrigerant port 221 connected to the third refrigerant port 221, and a second refrigerant port 172 connected to the first refrigerant port 171. The first reversing valve 26 comprises a first valve port 261, a second valve port 262, a third valve port 263 and a fourth valve port 264; the liquid storage container 33 comprises a first interface 331, a second interface 332 and a third interface 333; the compressor 21 comprises an inlet 211 and an outlet 212; the second reversing valve 31 comprises a fifth valve port 311, a sixth valve port 312 and a seventh valve port 313; the third reversing valve 32 comprises an eighth valve port 321, a ninth valve port 322 and a tenth valve port 323.

[0101] like Figure 8As shown, the connection relationship between the above-mentioned components is as follows: the outlet 212 of the compressor 21 is connected to the fifth valve port 311 of the second reversing valve 31, the sixth valve port 312 of the second reversing valve 31 is connected to the refrigerant inlet 121 of the hot water side heat exchanger 12, and the seventh valve port 313 of the second reversing valve 31 is connected to the first valve port 261 of the first reversing valve 26; the refrigerant outlet 122 of the hot water side heat exchanger 12 is connected to the eighth valve port 321 of the third reversing valve 32, and the ninth valve port 322 of the third reversing valve 32 is connected to the first valve port 261 of the first reversing valve 26 The tenth valve port 323 of the third reversing valve 32 is connected to the first interface 331 of the liquid storage container 33; the water outlet 112 of the water tank 11 is connected to the first water inlet 123 of the hot water side heat exchanger 12 through the hot water side water pump 14, and the first water outlet 124 of the hot water side heat exchanger 12 is connected to the return water port 113 of the water tank 11; the second valve port 262 of the first reversing valve 26 is connected to the first refrigerant port 171 of the outdoor heat exchanger 17; the second refrigerant port 172 of the outdoor heat exchanger 17 is connected to the liquid storage container 33 through the first one-way valve 27. The second interface 332 of the air conditioning side heat exchanger 22 is connected to the second interface 332 of the liquid storage container 33, the conducting direction of the first one-way valve 27 is toward the second interface 332 end of the liquid storage container 33, the second refrigerant port 172 of the outdoor heat exchanger 17 is connected to the second interface 332 of the liquid storage container 33 through the second throttling device 30; the third refrigerant port 221 of the air conditioning side heat exchanger 22 is connected to the third interface 333 of the liquid storage container 33 through the first throttling device 28, and the third refrigerant port 221 of the air conditioning side heat exchanger 22 is connected to the third interface 333 of the liquid storage container 33 through the second one-way valve 29. The fourth refrigerant port 222 of the air-conditioning side heat exchanger 22 is connected to the fourth valve port 264 of the first reversing valve 26, and the third valve port 263 of the first reversing valve 26 is connected to the inlet 211 of the compressor 21 through the gas-liquid separator 13; the outlet of the external terminal device 35 is connected to the second water inlet 223 of the air-conditioning side heat exchanger 22 through the air-conditioning side water pump 24, and the second water outlet 224 of the air-conditioning side heat exchanger 22 is connected to the inlet of the external terminal device 35. It should be noted that the direction of the first one-way valve 27 and the second one-way valve 29 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.

[0102] 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 a heat pump system, comprising the outdoor unit and the terminal device 35 described in the above embodiment, wherein the outdoor unit is not described in detail here.

[0103] In different situations, different valve ports will be connected, as follows:

[0104] like Fig. 9 As shown, when full heat recovery is performed to produce domestic hot water in the cooling mode, the fifth valve port 311 of the second reversing valve 31 is connected to the sixth valve port 312, the eighth valve port 321 of the third reversing valve 32 is connected to the tenth valve port 323, the fourth valve port 264 of the first reversing valve 26 is connected to the third valve port 263, the first throttling device 28 is opened, and the second throttling device 30 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 212 of the compressor 21 first passes through the fifth valve port 311 and the sixth valve port 312 of the second reversing valve 31 and then enters the refrigerant inlet 121 of the hot water side heat exchanger 12, and the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 12, and becomes a medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the refrigerant outlet 122 of the hot water side heat exchanger 12 passes through the eighth valve port 321 and the tenth valve port 323 of the third reversing valve 32 and then enters the first interface 331 of the liquid storage container 33, and the first interface 331 of the liquid storage container 33 The medium-temperature liquid refrigerant output by the three interfaces 333 is throttled and cooled by the first throttling device 28 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the third refrigerant port 221 of the air-conditioning side heat exchanger 22. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22, 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 222 of the air-conditioning side heat exchanger 22 passes through the fourth valve port 264 and the third valve port 263 of the first reversing valve 26, and then passes through the gas-liquid separator 13 and returns to the inlet 211 of the compressor 21, and circulates back and forth. The hot water side heat exchanger 12 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 17 can be recovered and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 17 and the air. The recovered heat is exchanged with the water in the domestic water tank 11 in the hot water side heat exchanger 12 to quickly prepare hot water, improve energy utilization, and increase the speed of hot water production.

[0105] like Fig.10As shown, when waste heat recovery is performed to produce domestic hot water in the cooling mode, the fifth valve port 311 of the second reversing valve 31 is connected to the sixth valve port 312, the eighth valve port 321 of the third reversing valve 32 is connected to the ninth valve port 322, the first valve port 261 of the first reversing valve 26 is connected to the second valve port 262, the fourth valve port 264 of the first reversing valve 26 is connected to the third valve port 263, the first throttling device 28 is opened, and the second throttling device 30 is closed. That is, when hot water needs to be prepared in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 first passes through the fifth valve port 311 and the sixth valve port 312 of the second reversing valve 31 and then enters the refrigerant inlet 121 of the hot water side heat exchanger 12. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 12 and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the hot water side heat exchanger 12 passes through the eighth valve port 321 and the ninth valve port 322 of the third reversing valve 32 and the first valve port 261 and the second valve port 262 of the first reversing valve 26 and then enters the first refrigerant port 171 of the outdoor heat exchanger 17. The medium-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 17 and becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant port 172 passes through the first one-way valve 27 and enters the second interface 332 of the liquid storage container 33. The medium-temperature liquid refrigerant output from the third interface 333 of the liquid storage container 33 is throttled and cooled by the first throttling device 28 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the third refrigerant port 221 of the air-conditioning side heat exchanger 22. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22, 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 222 of the air-conditioning side heat exchanger 22 passes through the fourth valve port 264 and the third valve port 263 of the first reversing valve 26 and then returns to the inlet 211 of the compressor 21 through the gas-liquid separator 13, and circulates back and forth. The hot water side heat exchanger 12 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 in the outdoor heat exchanger 17 can be recovered and utilized during summer cooling, thereby avoiding wasting all the heat in the heat exchange between the outdoor heat exchanger 17 and the air. The recovered heat is exchanged with the water in the domestic water tank 11 in the hot water side heat exchanger 12 to prepare hot water, thereby improving energy utilization.

[0106] Specifically, Fig.10 and Fig. 9 The difference between the shown embodiments is that Fig.10 In order to recycle at least part of the condensation heat originally used for heat exchange with air by the outdoor heat exchanger 17, Fig. 9 The purpose is to recover and utilize all the condensation heat originally used by the outdoor heat exchanger 17 for heat exchange with the air.

[0107] like Fig.11As shown, when waste heat recovery is performed to produce domestic hot water in the cooling mode, the fifth valve port 311 of the second reversing valve 31 is respectively connected to the sixth valve port 312 and the seventh valve port 313, the eighth valve port 321 of the third reversing valve 32 is connected to the ninth valve port 322, the first valve port 261 of the first reversing valve 26 is connected to the second valve port 262, the fourth valve port 264 of the first reversing valve 26 is connected to the third valve port 263, the first throttling device 28 is opened, and the second throttling device 30 is closed. That is, when hot water needs to be prepared in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 enters the refrigerant inlet 121 of the hot water side heat exchanger 12 through the fifth valve port 311 and the sixth valve port 312 of the second reversing valve 31, and enters the first valve port 261 and the second valve port 262 of the first reversing valve 26 after passing through the fifth valve port 311 and the seventh valve port 313 of the second reversing valve 31 and the first valve port 261 and the second valve port 262 of the first reversing valve 26. The refrigerant port 171, the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 12, and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the hot water side heat exchanger 12 passes through the eighth valve port 321 and the ninth valve port 322 of the third reversing valve 32 and the first valve port 261 and the second valve port 262 of the first reversing valve 26 and then enters the first refrigerant port 171 of the outdoor heat exchanger 17, The medium-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 17 to become a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant port 172 of the outdoor heat exchanger 17 passes through the first one-way valve 27 and enters the second interface 332 of the liquid storage container 33. The medium-temperature liquid refrigerant output from the third interface 333 of the liquid storage container 33 passes through the first throttling device 28 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the first throttling device 28 of the air conditioning side heat exchanger 22. The third refrigerant port 221, the low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22, 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 222 of the air-conditioning side heat exchanger 22 passes through the fourth valve port 264 and the third valve port 263 of the first reversing valve 26 and then returns to the inlet 211 of the compressor 21 through the gas-liquid separator 13, and circulates back and forth. The hot water side heat exchanger 12 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 17 is recycled and utilized during summer cooling, avoiding the waste of all heat in the outdoor side heat exchanger 17 and the air heat exchange. The recovered heat is exchanged with the water in the domestic water tank 11 in the hot water side heat exchanger 12 to prepare hot water, thereby improving energy utilization.

[0108] Specifically, Fig.11 and Fig.10 The difference between the shown embodiments is that Fig.11 In the embodiment shown, an additional refrigerant path enters the outdoor heat exchanger 17 after passing through the fifth valve port 311 and the seventh valve port 313 of the second reversing valve 31 and the first valve port 261 and the second valve port 262 of the first reversing valve 26, so that the amount of refrigerant entering the hot water side heat exchanger 12 can be better regulated, and the refrigerant coming out of the compressor 21 directly reaching the first reversing valve 26 can be guaranteed to be a gaseous refrigerant, while the refrigerant passing through the hot water side heat exchanger 12 may contain liquid refrigerant after heat exchange. Pure gaseous refrigerant can better ensure that the first reversing valve 26 has sufficient pressure difference for reversing, so that the pressure loss of the refrigerant pipeline is small, and the second reversing valve 31 is not easily affected by impurities, so that the system runs stably.

[0109] like Fig.12As shown, in the heating and domestic hot water mode, the fifth valve port 311 of the second reversing valve 31 is connected with the sixth valve port 312, the eighth valve port 321 of the third reversing valve 32 is connected with the ninth valve port 322, the first valve port 261 of the first reversing valve 26 is connected with the fourth valve port 264, the second valve port 262 of the first reversing valve 26 is connected with the third valve port 263, the first throttling device 28 is closed, and the second throttling device 30 is opened. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 first passes through the fifth valve port 311 and the sixth valve port 312 of the second reversing valve 31 and then enters the refrigerant inlet 121 of the hot water side heat exchanger 12. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 12 and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the hot water side heat exchanger 12 passes through the eighth valve port 321 and the ninth valve port 322 of the third reversing valve 32 and the first valve port 261 and the fourth valve port 264 of the first reversing valve 26 and then enters the fourth refrigerant port 222 of the air-conditioning side heat exchanger 22. The medium-temperature gaseous refrigerant exchanges heat with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22. After heat exchange, it becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the third refrigerant port 221 of the air-conditioning side heat exchanger 22 passes through the second one-way valve 29 and enters the third interface 333 of the liquid storage container 33. The medium-temperature liquid refrigerant output from the second interface 332 of the liquid storage container 33 passes through the second throttling device 30 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 172 of the outdoor heat exchanger 17. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 17 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output from the first refrigerant port 171 of the outdoor heat exchanger 17 passes through the second valve port 262 and the third valve port 263 of the first reversing valve 26 and then returns to the inlet 211 of the compressor 21 through the gas-liquid separator 13, and the cycle is repeated. The hot water side heat exchanger 12 is connected to the domestic water tank 11, so that hot water can be prepared while heating in winter, thereby improving energy utilization.

[0110] like Fig.13As shown, in the heating and domestic hot water mode, the fifth valve port 311 of the second reversing valve 31 is respectively connected with the sixth valve port 312 and the seventh valve port 313, the eighth valve port 321 of the third reversing valve 32 is connected with the ninth valve port 322, the first valve port 261 of the first reversing valve 26 is connected with the fourth valve port 264, the second valve port 262 of the first reversing valve 26 is connected with the third valve port 263, the first throttling device 28 is closed, and the second throttling device 30 is opened. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 enters the refrigerant inlet 121 of the hot water side heat exchanger 12 after passing through the fifth valve port 311 and the sixth valve port 312 of the second reversing valve 31 in one way, and enters the fourth refrigerant port 222 of the air-conditioning side heat exchanger 22 after passing through the fifth valve port 311 and the seventh valve port 313 of the second reversing valve 31 and the first valve port 261 and the fourth valve port 264 of the first reversing valve 26 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 12, and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the hot water side heat exchanger 12 passes through the eighth valve port 321 and the ninth valve port 322 of the third reversing valve 32 and the first valve port 261 and the fourth valve port 264 of the first reversing valve 26 and enters the At the four refrigerant ports 222, the medium-temperature gaseous refrigerant undergoes heat exchange with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22 and becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant outputted from the third refrigerant port 221 of the air-conditioning side heat exchanger 22 passes through the second one-way valve 29 and enters the third interface 333 of the liquid storage container 33. The medium-temperature liquid refrigerant outputted from the second interface 332 of the liquid storage container 33 passes through the second throttling device 30 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 172 of the outdoor heat exchanger 17. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 17 and becomes a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant outputted from the first refrigerant port 171 of the outdoor heat exchanger 17 passes through the second valve port 262 and the third valve port 263 of the first reversing valve 26 and then passes through the gas-liquid separator 13 and returns to the inlet 211 of the compressor 21, for a reciprocating cycle. The hot water side heat exchanger 12 is connected to the domestic water tank 11, so that hot water can be prepared while heating in winter, thereby improving energy utilization.

[0111] Specifically, Fig.13 and Fig.12 The difference between the shown embodiments is that Fig.13In the embodiment shown, the refrigerant passes through the fifth valve port 311 and the seventh valve port 313 of the second reversing valve 31 and the first valve port 261 and the fourth valve port 264 of the first reversing valve 26 and then enters the air-conditioning side heat exchanger 22, so that the amount of refrigerant entering the hot water side heat exchanger 12 can be better regulated, and the refrigerant coming out of the compressor 21 directly reaching the first reversing valve 26 can be guaranteed to be a gaseous refrigerant, while the refrigerant passing through the hot water side heat exchanger 12 may contain liquid refrigerant after heat exchange. Pure gaseous refrigerant can better ensure that the first reversing valve 26 has sufficient pressure difference for reversing, so that the pressure loss of the refrigerant pipeline is small, and the second reversing valve 31 is not easily affected by impurities, so that the system runs stably.

[0112] like Fig.14 As shown, in the pure hot water mode, the fifth valve port 311 of the second reversing valve 31 is connected with the sixth valve port 312, the eighth valve port 321 of the third reversing valve 32 is connected with the tenth valve port 323, the second valve port 262 of the first reversing valve 26 is connected with the third valve port 263, the first throttling device 28 is closed, and the second throttling device 30 is opened. That is, when only hot water needs to be prepared, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 first passes through the fifth valve port 311 and the sixth valve port 312 of the second reversing valve 31 and then enters the refrigerant inlet 121 of the hot water side heat exchanger 12, and the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 11 in the hot water side heat exchanger 12 to prepare hot water, and after preparing the hot water, it becomes a medium-temperature liquid refrigerant, and the medium-temperature liquid refrigerant output from the refrigerant outlet 122 of the hot water side heat exchanger 12 passes through the eighth valve port 321 and the tenth valve port 323 of the third reversing valve 32 and then enters the first inlet 121 of the liquid storage container 33. The medium-temperature liquid refrigerant outputted from the second interface 332 of the liquid storage container 33 passes through the second throttling device 30 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 172 of the outdoor heat exchanger 17. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 17 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant outputted from the first refrigerant port 171 of the outdoor heat exchanger 17 passes through the second valve port 262 and the third valve port 263 of the first reversing valve 26 and then passes through the gas-liquid separator 13 and returns to the inlet 211 of the compressor 21, and the circulation is repeated. The hot water side heat exchanger 12 is connected to the domestic water tank 11, so that all the heat from the compressor 21 can be used alone in the hot water side heat exchanger 12 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 22, and the heat exchange efficiency is higher.

[0113] like Fig.15As shown, in the cooling mode, the fifth valve port 311 of the second reversing valve 31 is connected to the seventh valve port 313, the first valve port 261 of the first reversing valve 26 is connected to the second valve port 262, the fourth valve port 264 of the first reversing valve 26 is connected to the third valve port 263, the first throttling device 28 is opened, and the second throttling device 30 is closed. That is, when cooling is performed alone in summer, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 passes through the fifth valve port 311 and the seventh valve port 313 of the second reversing valve 31 and the first valve port 261 and the second valve port 262 of the first reversing valve 26 and then enters the first refrigerant port 171 of the outdoor heat exchanger 17. The high-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 17 to become a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant port 172 of the outdoor heat exchanger 17 passes through the first one-way valve 27 and then enters the second interface 332 of the liquid storage container 33. The third interface 333 of the liquid storage container 33 The output medium-temperature liquid refrigerant is throttled and cooled by the first throttling device 28 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the third refrigerant port 221 of the air-conditioning side heat exchanger 22. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22, 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 222 of the air-conditioning side heat exchanger 22 passes through the fourth valve port 264 and the third valve port 263 of the first reversing valve 26, and then passes through the gas-liquid separator 13 and returns to the inlet 211 of the compressor 21, and circulates back and forth.

[0114] like Fig.16As shown, in the heating mode, the fifth valve port 311 of the second reversing valve 31 is connected with the seventh valve port 313, the first valve port 261 of the first reversing valve 26 is connected with the fourth valve port 264, the second valve port 262 of the first reversing valve 26 is connected with the third valve port 263, the first throttling device 28 is closed, and the second throttling device 30 is opened. That is, when heating alone is used in winter, the high-temperature gaseous refrigerant output from the outlet 212 of the compressor 21 passes through the fifth valve port 311 and the seventh valve port 313 of the second reversing valve 31 and the first valve port 261 and the fourth valve port 264 of the first reversing valve 26 and then enters the fourth refrigerant port 222 of the air-conditioning side heat exchanger 22. The high-temperature gaseous refrigerant is converted into medium-temperature liquid refrigerant after heat exchange with the circulating water in the terminal device 35 in the air-conditioning side heat exchanger 22. The medium-temperature liquid refrigerant output from the third refrigerant port 221 of the air-conditioning side heat exchanger 22 passes through the second one-way valve 29 and then enters the first refrigerant port 222 of the liquid storage container 33. Three interfaces 333, the medium-temperature liquid refrigerant output from the second interface 332 of the liquid storage container 33 is throttled and cooled by the second throttling device 30 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant port 172 of the outdoor heat exchanger 17, and the low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 17 to become a low-temperature gaseous refrigerant, and the low-temperature gaseous refrigerant output from the first refrigerant port 171 of the outdoor heat exchanger 17 passes through the second valve port 262 and the third valve port 263 of the first reversing valve 26 and then returns to the inlet 211 of the compressor 21 through the gas-liquid separator 13, and repeats the cycle.

[0115] 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.

[0116] By implementing the utility model, the following beneficial effects are achieved:

[0117] The utility model arranges the hot water side heat exchanger 12 and the gas-liquid separator 13 to be located below the corresponding water tank 11, which is beneficial to the layout optimization of the overall components, can improve the utilization rate of the components in the vertical space, and at the same time reduce the space of the unit in the horizontal direction to achieve a miniaturized design.

[0118] Furthermore, the hot water side heat exchanger 12 is disposed around the periphery of the gas-liquid separator 13, which can reduce the occupation of the installation space of other components, provide more space for the arrangement of pipelines, and reduce the possibility of mutual interference and collision between pipelines.

[0119] 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: shell; A water tank, the water tank is used to store domestic water, and the water tank is installed inside the shell; A hot water side heat exchanger and a gas-liquid separator, wherein the hot water side heat exchanger is used to prepare hot water by heat exchange between the refrigerant and the water in the water tank, and the gas-liquid separator is used to separate the gaseous refrigerant and the liquid refrigerant. The hot water side heat exchanger and the gas-liquid separator are installed inside the shell and located below the corresponding water tank, wherein the hot water side heat exchanger is arranged around the periphery of the gas-liquid separator.

2. 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 inside the shell.

3. The outdoor unit according to claim 2, characterized in that: The outdoor unit further comprises: 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 inside the shell.

4. The outdoor unit according to claim 2, characterized in that: The outdoor unit further comprises: A pressure regulator, the pressure regulator is used to adjust the water pressure between the air-conditioning side heat exchanger and the external terminal device, and the pressure regulator is installed inside the shell.

5. The outdoor unit according to claim 1, characterized in that: The outdoor unit further comprises: A hot water side water pump, the hot water side water pump is used to provide power for the water circulation between the water tank and the hot water side heat exchanger, and the hot water side water pump is installed inside the shell and is located below the water tank.

6. The outdoor unit according to claim 5, characterized in that: The hot water side water pump is located at one end of the inner width direction of the shell, and the hot water side heat exchanger and the gas-liquid separator are located at the other end of the inner width direction of the shell.

7. The outdoor unit according to claim 5 or 6, characterized in that: The housing includes a chassis; The outdoor unit further comprises: A water tank bracket, wherein the water tank bracket is fixed on the chassis, and the water tank is installed on the water tank bracket to form a accommodating space between the bottom of the water tank and the chassis, and the hot water side heat exchanger, the gas-liquid separator and the hot water side water pump are located in the accommodating space.

8. The outdoor unit according to claim 1, characterized in that: The housing comprises a chassis, and the gas-liquid separator is vertically mounted on the chassis.

9. The outdoor unit according to claim 1, characterized in that: The hot water side heat exchanger is a shell and tube heat exchanger, and the shell includes a bottom plate; The outdoor unit further comprises: A first heat exchanger bracket is fixed on the chassis, and the shell-and-tube heat exchanger is installed on the first heat exchanger bracket.

10. A 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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