Heat pump system

Abstract

The utility model discloses a heat pump system which comprises at least two indoor units, an outdoor main machine, an air pipe and a liquid pipe. The indoor unit comprises a first refrigerant port and a second refrigerant port communicating with the first refrigerant port. The outdoor main machine comprises a first refrigerant pipeline, a second refrigerant pipeline, a refrigerant outlet pipeline and a refrigerant inlet pipeline. The first refrigerant pipeline is connected with the main connector end of the air pipe. In each indoor unit, the first refrigerant port is connected with the corresponding branch connector end in the air pipe, and the second refrigerant port is connected with the corresponding branch connector end in the liquid pipe. And the second refrigerant pipeline is connected with the main interface end of the liquid pipe. The refrigerant outlet pipeline and the refrigerant inlet pipeline are used for being externally connected with a domestic hot water module, and hot water is prepared through heat exchange between a refrigerant and water. The liquid pipe and the air pipe are further used for being externally connected with a hydraulic module, and heat exchange between the refrigerant and water is achieved. The weight of the outdoor main machine is reduced, the main machine is integrated to a system, and a user can select a domestic hot water module and a hydraulic module according to requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump technical field especially relates to a heat pump system. BACKGROUND

[0002] The existing heat pump system is generally fixedly configured two or three combined supply, and the user cannot select and match according to actual demand.For the user in the south of China, some users feel that the ground heating is not needed in winter, and some users pursue comfort and have ground heating demand, or some users do not want to install ground heating when installing, and want to install ground heating later, and the same heat pump system in the prior art cannot meet the needs of different users or the same user at different times. INVENTION CONTENTS

[0003] The utility model provides a heat pump system for at least one defect of the related art in the above background art that the heat pump system is generally fixedly configured two or three combined supply, and the user cannot select and match according to actual demand.

[0004] The utility model adopts the technical scheme in the technical problem is solved: a kind of heat pump system is constructed, comprising:

[0005] At least two indoor units, the indoor unit includes first refrigerant port and second refrigerant port connected with the first refrigerant port;

[0006] Outdoor main machine, the outdoor main machine includes first refrigerant pipeline, second refrigerant pipeline, refrigerant outlet pipeline and refrigerant inlet pipeline;

[0007] Gas pipe and liquid pipe;

[0008] Among them, the first refrigerant pipeline is connected with the total interface end of the gas pipe;

[0009] In each indoor unit, the first refrigerant port is connected with the corresponding branch interface end in the gas pipe, and the second refrigerant port is connected with the corresponding branch interface end in the liquid pipe;

[0010] The second refrigerant pipeline is connected with the total interface end of the liquid pipe;

[0011] The refrigerant outlet pipeline and the refrigerant inlet pipeline are used to externally connect life hot water module, and hot water is prepared by heat exchange between refrigerant and water;

[0012] The liquid pipe and the gas pipe are also used to externally connect hydraulic module to realize heat exchange between refrigerant and water.

[0013] Some embodiments, the outdoor main machine further includes:

[0014] a first switch valve disposed on the first refrigerant pipeline;

[0015] a second switch valve disposed on the second refrigerant pipeline;

[0016] a third switch valve disposed on the refrigerant outlet pipeline; and

[0017] a fourth switch valve disposed on the refrigerant inlet pipeline.

[0018] In some embodiments, the heat pump system further comprises the domestic hot water module, the domestic hot water module comprising:

[0019] a domestic hot water heat exchanger comprising a first refrigerant inlet, a first refrigerant outlet in communication with the first refrigerant inlet, a first water inlet, and a first water outlet in communication with the first water inlet, the first refrigerant inlet connected to the refrigerant outlet pipeline, and the first refrigerant outlet connected to the refrigerant inlet pipeline; and

[0020] a domestic water tank for storing domestic water, the domestic water tank connected to the first water inlet and the first water outlet, respectively.

[0021] In some embodiments, the heat pump system further comprises at least one water module, the water module comprising:

[0022] a heat exchanger comprising a third refrigerant port, a fourth refrigerant port in communication with the third refrigerant port, a second water inlet, and a second water outlet in communication with the second water inlet;

[0023] wherein the third refrigerant port is connected to a corresponding tapping port end in the gas pipeline, the fourth refrigerant port is connected to a corresponding tapping port end in the liquid pipeline, and the second water inlet and the second water outlet are used for external connection.

[0024] In some embodiments, the outdoor main unit further comprises:

[0025] a compressor for compressing refrigerant;

[0026] a high-pressure gas-liquid separator comprising a second refrigerant inlet, a second refrigerant outlet in communication with the second refrigerant inlet, and a third refrigerant outlet in communication with the second refrigerant inlet; the second refrigerant outlet is used for outputting gaseous refrigerant after gas-liquid separation, and the third refrigerant outlet is used for outputting liquid refrigerant after gas-liquid separation;

[0027] an outdoor-side heat exchanger including a fifth refrigerant port and a sixth refrigerant port in communication with the fifth refrigerant port; and

[0028] a first throttling device;

[0029] wherein the outlet of the compressor is connected to the refrigerant outlet line;

[0030] the second refrigerant inlet is connected to the refrigerant inlet line;

[0031] the second refrigerant outlet is connected to the first refrigerant line and the fifth refrigerant port;

[0032] the third refrigerant outlet is connected to the second refrigerant line and the sixth refrigerant port via the first throttling device, the second refrigerant line is connected to the sixth refrigerant port, and the fifth refrigerant port and the first refrigerant line are connected to the inlet of the compressor.

[0033] In some embodiments, the outdoor main unit further includes a fifth on-off valve and a first reversing valve;

[0034] wherein the outlet of the compressor is connected to the refrigerant outlet line via the fifth on-off valve, and the outlet of the compressor is connected to the first refrigerant line and the fifth refrigerant port via the first reversing valve;

[0035] the second refrigerant outlet is connected to the first refrigerant line and the fifth refrigerant port via the first reversing valve;

[0036] or, the outlet of the compressor is connected to the refrigerant outlet line via the first reversing valve, and the outlet of the compressor is connected to the first refrigerant line and the fifth refrigerant port via the first reversing valve;

[0037] the second refrigerant outlet is connected to the first refrigerant line and the fifth refrigerant port via the fifth on-off valve.

[0038] In some embodiments, the first reversing valve includes a first valve port, a second valve port, and a third valve port;

[0039] wherein the first valve port is connected to the second refrigerant outlet, the second valve port is connected to the first refrigerant line and the fifth refrigerant port, and the third valve port is connected to the outlet of the compressor;

[0040] or, the first valve port is connected to the outlet of the compressor, the second valve port is connected to the refrigerant outlet line, and the third valve port is connected to the first refrigerant line and the fifth refrigerant port.

[0041] In some embodiments, the outdoor main machine further comprises an economic module.

[0042] The first end of the economic module is connected with the second refrigerant pipeline, the second end of the economic module is connected with the sixth refrigerant port, and the third refrigerant outlet is connected with the second end of the economic module through the first throttling device.

[0043] In some embodiments, the outdoor main machine further comprises an economic module and a liquid storage container.

[0044] The first interface of the liquid storage container is connected with the second refrigerant pipeline, and the third refrigerant outlet is connected with the second refrigerant pipeline through the first throttling device; the second interface of the liquid storage container is connected with the first end of the economic module, and the second end of the economic module is connected with the sixth refrigerant port.

[0045] In some embodiments, the outdoor main machine further comprises a second reversing valve.

[0046] The second refrigerant outlet is connected with the first refrigerant pipeline and the fifth refrigerant port through the second reversing valve; the fifth refrigerant port and the first refrigerant pipeline are connected with the inlet of the compressor through the second reversing valve.

[0047] By implementing the utility model, the following beneficial effects are achieved:

[0048] The outdoor main machine has the refrigerant outlet pipeline and the refrigerant inlet pipeline for externally connecting the domestic hot water module, and has the liquid pipe and the gas pipe for externally connecting the hydraulic module, so that the domestic hot water module and the hydraulic module can be modularized, thereby reducing the weight of the outdoor main machine, integrating the main machine into a system, and improving flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0049] The utility model will be further described below in combination with the drawings and embodiments, and the drawings are as follows:

[0050] Figure 1 is the first schematic view of the heat pump system of the utility model;

[0051] Figure 2 is the second schematic view of the heat pump system of the utility model;

[0052] Figure 3 is the third schematic view of the heat pump system of the utility model;

[0053] Figure 4 is Figure 1The refrigerant flow direction schematic diagram of the heat pump system for preparing hot water while refrigerating through the heat recovery mode is shown in the figure;

[0054] Figure 5 is Figure 1 The first refrigerant flow direction schematic diagram of the heat pump system for preparing hot water while refrigerating through the waste heat recovery mode is shown in the figure;

[0055] Figure 6 is Figure 1 The second refrigerant flow direction schematic diagram of the heat pump system for preparing hot water while refrigerating through the waste heat recovery mode is shown in the figure;

[0056] Figure 7 is Figure 1 The first refrigerant flow direction schematic diagram of the heat pump system for preparing hot water while refrigerating is shown in the figure;

[0057] Figure 8 is Figure 1 The second refrigerant flow direction schematic diagram of the heat pump system for preparing hot water while refrigerating is shown in the figure;

[0058] Figure 9 is Figure 1 The refrigerant flow direction schematic diagram of the heat pump system when preparing hot water only is shown in the figure;

[0059] Figure 10 is Figure 1 The refrigerant flow direction schematic diagram of the heat pump system when refrigerating is shown in the figure;

[0060] Figure 11 is Figure 1 The refrigerant flow direction schematic diagram of the heat pump system when heating is shown in the figure;

[0061] Figure 12 is Figure 2 The refrigerant flow direction schematic diagram of the heat pump system for preparing hot water while refrigerating through the heat recovery mode is shown in the figure;

[0062] Figure 13 is Figure 2 The refrigerant flow direction schematic diagram of the heat pump system when preparing hot water only is shown in the figure. DETAILED DESCRIPTION

[0063] In order to have a more clear understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings.

[0064] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0065] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0066] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "provided", "located" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be chemically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0067] It needs to be explained here that the connection between the following ports, between the ports and the components, or between the components is only a physical structural connection, and does not uniquely limit the communication relationship and the refrigerant flow relationship.

[0068] As shown in Figure 1 , Figure 2 and Figure 3 Some embodiments of the utility model disclose a heat pump system, which comprises at least two indoor units 10, an outdoor main unit 20, an air pipe 30 and a liquid pipe 40, and it can be understood that the at least two can be two, three or any number, and the heat pump system is specifically as follows:

[0069] The indoor unit 10 is used for realizing heat exchange between refrigerant and indoor air, and the indoor unit 10 comprises a first refrigerant port 101 and a second refrigerant port 102 in communication with the first refrigerant port 101. The outdoor main unit 20 comprises a first refrigerant pipe 201, a second refrigerant pipe 202, a refrigerant outlet pipe 203 and a refrigerant inlet pipe 204.

[0070] The first refrigerant pipeline 201 is connected with the total interface end of the gas pipe 30. In each indoor unit 10, the first refrigerant port 101 is connected with the corresponding sub-interface end in the gas pipe 30, and the second refrigerant port 102 is connected with the corresponding sub-interface end in the liquid pipe 40. The second refrigerant pipeline 202 is connected with the total interface end of the liquid pipe 40.

[0071] The refrigerant outlet pipeline 203 and the refrigerant inlet pipeline 204 are used to externally connect a domestic hot water module 50, and hot water is prepared by heat exchange between refrigerant and water. The liquid pipe 40 and the gas pipe 30 are also used to externally connect a hydraulic module 60, so as to realize heat exchange between refrigerant and water.

[0072] The heat pump system of the embodiment can modularize the domestic hot water module and the hydraulic module, thereby reducing the weight of the outdoor main unit 20, enabling main unit integration to system integration, and improving flexibility, because the user can select and match the domestic hot water module 50 and the hydraulic module 60 according to actual needs. In addition, the indoor unit 10 can also be selected and installed according to actual needs.

[0073] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 3 , the outdoor main unit 20 further comprises a first switch valve 205, a second switch valve 206, a third switch valve 207 and a fourth switch valve 208. The first switch valve 205 is arranged on the first refrigerant pipeline 201, the second switch valve 206 is arranged on the second refrigerant pipeline 202, the third switch valve 207 is arranged on the refrigerant outlet pipeline 203, and the fourth switch valve 208 is arranged on the refrigerant inlet pipeline 204. For example, the first switch valve 205, the second switch valve 206, the third switch valve 207 and the fourth switch valve 208 are each a stop valve. The stop valve is merely an example and does not limit the present application, and other valves can also be used.

[0074] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 3 , when the user needs to configure or use the domestic hot water module 50, the domestic hot water module 50 is connected to the refrigerant outlet pipeline 203 and the refrigerant inlet pipeline 204. Therefore, the heat pump system further comprises the domestic hot water module 50, the domestic hot water module 50 comprises a domestic hot water heat exchanger 501 and a domestic water tank 502, and the domestic hot water module 50 is used to realize heat exchange between refrigerant and water in the domestic water tank 502. The domestic water tank 502 is used to store domestic water.

[0075] The domestic hot water heat exchanger 501 comprises a first refrigerant inlet 5011, a first refrigerant outlet 5012 connected with the first refrigerant inlet 5011, a first water inlet 5013, and a first water outlet 5014 connected with the first water inlet 5013. The first refrigerant inlet 5011 is connected with the refrigerant outlet pipeline 203, and the first refrigerant outlet 5012 is connected with the refrigerant inlet pipeline 204. The domestic water tank 502 is connected with the first water inlet 5013 and the first water outlet 5014 respectively.

[0076] The domestic water tank 502 comprises a cold water inlet 5021, a first water outlet 5022, a first water return inlet 5023, and a hot water outlet 5024. The first water outlet 5022 is connected with the first water inlet 5013, and the first water outlet 5014 is connected with the first water return inlet 5023.

[0077] In some embodiments, the domestic hot water module 50 further comprises a first water pump 503. The first water pump 503 is arranged in a water inlet pipeline (i.e., a pipeline connecting the first water outlet 5022 with the first water inlet 5013) or a water outlet pipeline (i.e., a pipeline connecting the first water outlet 5014 with the first water return inlet 5023) of the domestic hot water heat exchanger 501. The first water pump 503 is used to provide power for water circulation between the domestic hot water heat exchanger 501 and the domestic water tank 502.

[0078] For example, the domestic hot water heat exchanger 501 is a double-pipe heat exchanger. The double-pipe heat exchanger is only an example and does not limit the present application. Other heat exchangers can also be used.

[0079] In the present embodiment, the domestic hot water module 50 is arranged outside the outdoor main unit 20, which can reduce the weight of the outdoor main unit 20. Users can also select the domestic hot water module 50 according to actual needs.

[0080] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 3 When the user needs to configure or use the water force module 60, the water force module 60 can be connected to the liquid pipe 40 and the gas pipe 30. Therefore, the heat pump system further comprises at least one water force module 60. It can be understood that the at least one can be one, two, three, or any number. The water force module 60 comprises a heat exchanger 601, which is used to realize heat exchange between refrigerant and water in the external terminal 80, such as a ground pipe. The ground cooling or floor heating effect can be realized.

[0081] The heat exchanger 601 comprises a third refrigerant port 6011, a fourth refrigerant port 6012 in communication with the third refrigerant port 6011, a second water inlet 6013, and a second water outlet 6014 in communication with the second water inlet 6013.

[0082] The third refrigerant port 6011 is connected to a corresponding tapping end in the gas pipe 30, and the fourth refrigerant port 6012 is connected to a corresponding tapping end in the liquid pipe 40. The second water inlet 6013 and the second water outlet 6014 are used to externally connect the terminal 80.

[0083] The terminal 80 comprises a second water outlet 801 and a second water return port 802, the second water outlet 801 is connected to the second water inlet 6013, and the second water outlet 6014 is connected to the second water return port 802.

[0084] In some embodiments, the water module 60 further comprises a second water pump 603, which is arranged on the pipeline of the second water inlet 6013 (i.e. the pipeline connecting the second water outlet 801 and the second water inlet 6013) or the pipeline of the second water outlet 6014 (i.e. the pipeline connecting the second water outlet 6014 and the second water return port 802), and the second water pump 603 is used to provide power for water circulation between the heat exchanger 601 and the external terminal 80.

[0085] For example, the heat exchanger 601 is a plate heat exchanger, and the tube heat exchanger is only an example and does not limit the present application, and other heat exchangers can also be used.

[0086] In some embodiments, the water module 60 further comprises a fifth throttling device 604, and the fourth refrigerant port 6012 is connected to the corresponding tapping end in the liquid pipe 40 through the fifth throttling device 604.

[0087] In this embodiment, the water module 60 is arranged outside the outdoor main unit 20, which can reduce the weight of the outdoor main unit 20, and users can also select the water module 60 according to actual needs.

[0088] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 3 The outdoor main unit 20 further comprises a compressor 209, a high-pressure gas-liquid separator 210, an outdoor side heat exchanger 211, and a first throttling device 212, and the specific arrangement is as follows:

[0089] The compressor 209 is configured to compress refrigerant. The high-pressure gas-liquid separator 210 includes a second refrigerant inlet 2101, a second refrigerant outlet 2102 in communication with the second refrigerant inlet 2101, and a third refrigerant outlet 2103 in communication with the second refrigerant inlet 2101, the second refrigerant outlet 2102 being configured to output gaseous refrigerant after gas-liquid separation, and the third refrigerant outlet 2103 being configured to output liquid refrigerant after gas-liquid separation. The outdoor heat exchanger 211 is configured to exchange heat between refrigerant and ambient air, and includes a fifth refrigerant port 2111 and a sixth refrigerant port 2112 in communication with the fifth refrigerant port 2111.

[0090] The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 203. The second refrigerant inlet 2101 is connected to the refrigerant inlet pipeline 204. The second refrigerant outlet 2102 is connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111. The third refrigerant outlet 2103 is connected to the second refrigerant pipeline 202 and the sixth refrigerant port 2112 via the first throttling device 212, the second refrigerant pipeline 202 is connected to the sixth refrigerant port 2112, and the fifth refrigerant port 2111 and the first refrigerant pipeline 201 are connected to the inlet of the compressor 209.

[0091] For example, the outdoor heat exchanger 211 is a finned heat exchanger, and the first throttling device 212 is an electronic expansion valve or a thermal expansion valve. The finned heat exchanger, the electronic expansion valve, and the thermal expansion valve are merely examples and do not limit the present application.

[0092] The high-pressure gas-liquid separator 210 is arranged at the outlet end of the refrigerant inlet pipeline 204. By using gas-liquid separation, the system can automatically switch the flow direction of refrigerant when switching between the refrigeration and full-heat-recovery hot water production mode and the refrigeration and waste-heat-recovery hot water production mode, and when switching between the heating and hot water production mode and the pure hot water production mode, thereby improving the stability of the system.

[0093] In some embodiments, when the heat pump system is configured with the hot water module 50, in the refrigeration and full-heat-recovery hot water production mode, refrigerant flows from the compressor 209, through the refrigerant outlet pipeline 203, the first refrigerant inlet 5011, the first refrigerant outlet 5012, the second refrigerant inlet 2101, the third refrigerant outlet 2103, the first throttling device 212, the second refrigerant pipeline 202, the liquid pipe 40, the second refrigerant port 102, the first refrigerant port 101, the gas pipe 30, and the first refrigerant pipeline 201 to form a refrigeration refrigerant circuit, and at the same time, all the heat of the refrigerant is exchanged in the hot water heat exchanger 501.

[0094] When the heat pump system is further configured with the hydraulic module 60, in the refrigeration and full-heat-recovery hot water production mode, the refrigerant also comes out of the liquid pipe 40, returns to the gas pipe 30 through the fourth refrigerant port 6012 and the third refrigerant port 6011, and exchanges heat with the water in the external terminal 80 on the heat exchanger 601, for example, to achieve the effect of ground cooling. It should be noted that in the refrigeration and full-heat-recovery hot water production mode, the indoor unit 10 and the hydraulic module 60 can be operated alternatively or simultaneously.

[0095] In some embodiments, when the heat pump system is configured with the hot water module 50, in the refrigeration and waste-heat-recovery hot water production mode, the refrigerant comes out of the compressor 209, forms a refrigeration refrigerant circuit through the refrigerant outlet pipe 203, the first refrigerant inlet 5011, the first refrigerant outlet 5012, the second refrigerant inlet 2101, the second refrigerant outlet 2102, the fifth refrigerant port 2111, the sixth refrigerant port 2112, the second refrigerant pipe 202, the liquid pipe 40, the second refrigerant port 102, the first refrigerant port 101, the gas pipe 30 and the first refrigerant pipe 201, and at the same time, part of the heat of the refrigerant is exchanged in the hot water heat exchanger 501.

[0096] When the heat pump system is further configured with the hydraulic module 60, in the refrigeration and waste-heat-recovery hot water production mode, the refrigerant also comes out of the liquid pipe 40, returns to the gas pipe 30 through the fourth refrigerant port 6012 and the third refrigerant port 6011, and exchanges heat with the water in the external terminal 80 on the heat exchanger 601, for example, to achieve the effect of ground cooling. In the refrigeration and waste-heat-recovery hot water production mode, the indoor unit 10 and the hydraulic module 60 can be operated alternatively or simultaneously.

[0097] In some embodiments, when the heat pump system is configured with the hot water module 50, in the heating and hot water production mode, the refrigerant comes out of the compressor 209, forms a heating refrigerant circuit through the refrigerant outlet pipe 203, the first refrigerant inlet 5011, the first refrigerant outlet 5012, the second refrigerant inlet 2101, the second refrigerant outlet 2102, the first refrigerant pipe 201, the gas pipe 30, the first refrigerant port 101, the second refrigerant port 102, the liquid pipe 40, the second refrigerant pipe 202, the sixth refrigerant port 2112 and the fifth refrigerant port 2111, and at the same time, part of the heat of the refrigerant is exchanged in the hot water heat exchanger 501.

[0098] When the heat pump system is further configured with the hydraulic module 60, in the heating plus domestic hot water mode, the refrigerant also comes out of the gas pipe 30, and then returns to the liquid pipe 40 through the third refrigerant port 6011 and the fourth refrigerant port 6012, and the refrigerant exchanges heat with the water in the external terminal 80 on the heat exchanger 601, for example, to achieve the effect of floor heating. It should be noted that in the heating plus domestic hot water mode, the indoor unit 10 and the hydraulic module 60 can be operated alternatively or simultaneously.

[0099] In some embodiments, when the heat pump system is configured with the domestic hot water module 50, in the pure hot water mode, the refrigerant comes out of the compressor 209, and then forms a pure hot water refrigerant circuit through the refrigerant outlet pipe 203, the first refrigerant inlet port 5011, the first refrigerant outlet port 5012, the second refrigerant inlet port 2101, the third refrigerant outlet port 2103, the first throttling device 212, the sixth refrigerant port 2112, and the fifth refrigerant port 2111, and at the same time, all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 501.

[0100] In some embodiments, when the heat pump system is configured with the hydraulic module 60, in the cooling mode, the refrigerant comes out of the compressor 209, and then forms a cooling refrigerant circuit through the fifth refrigerant port 2111, the sixth refrigerant port 2112, the second refrigerant pipe 202, the liquid pipe 40, the second refrigerant port 102, the first refrigerant port 101, the gas pipe 30, and the first refrigerant pipe 201. In addition, the refrigerant also comes out of the liquid pipe 40, and then returns to the gas pipe 30 through the fourth refrigerant port 6012 and the third refrigerant port 6011, and the refrigerant exchanges heat with the water in the external terminal 80 on the heat exchanger 601, for example, to achieve the effect of ground cooling. In the cooling mode, the indoor unit 10 and the hydraulic module 60 can be operated alternatively or simultaneously.

[0101] In some embodiments, when the heat pump system is equipped with the hydraulic module 60, in heating mode, the refrigerant exiting the compressor 209 forms a heating refrigerant circuit via the first refrigerant line 201, the gas line 30, the first refrigerant port 101, the second refrigerant port 102, the liquid line 40, the second refrigerant line 202, the sixth refrigerant port 2112, and the fifth refrigerant port 2111. Furthermore, the refrigerant also exits the gas line 30 and returns to the liquid line 40 via the third refrigerant port 6011 and the fourth refrigerant port 6012. The refrigerant exchanges heat with water in the external terminal 80 at the heat exchanger 601, for example, achieving a floor heating effect. It should be noted that in heating mode, the indoor unit 10 and the hydraulic module 60 can operate selectively or simultaneously.

[0102] It should be noted that "all heat is exchanged in the domestic hot water heat exchanger 501" means that the refrigerant is completely formed into liquid refrigerant after heat exchange in the domestic hot water heat exchanger 501, while "partial heat is exchanged in the domestic hot water heat exchanger 501" means that the refrigerant is formed into gaseous refrigerant after heat exchange in the domestic hot water heat exchanger 501.

[0103] In some embodiments, such as Figure 1 and Figure 2 As shown, the outdoor unit 20 also includes a fifth switching valve 213 and a first reversing valve 214. The fifth switching valve 213 is used to regulate the amount of refrigerant flowing to the refrigerant outlet pipe 203, and the first reversing valve 214 is used to switch all or part of the heat of the refrigerant to be exchanged in the domestic hot water module 50 when the domestic hot water module 50 is connected.

[0104] The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 203 via the fifth switching valve 213, and the outlet of the compressor 209 is connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111 via the first reversing valve 214. The second refrigerant outlet 2102 is connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111 via the first reversing valve 214.

[0105] The first reversing valve 214 includes a first valve port 2141, a second valve port 2142, and a third valve port 2143. Specifically, the first valve port 2141 is connected to the second refrigerant outlet 2102, the second valve port 2142 is connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111, and the third valve port 2143 is connected to the outlet of the compressor 209.

[0106] When the fifth switching valve 213 is opened, the outlet of the compressor 209 is connected to the refrigerant outlet pipeline 203.

[0107] When the first valve port 2141 is connected to the second valve port 2142, the second refrigerant outlet 2102 is connected to the first refrigerant pipeline 201 or the fifth refrigerant port 2111.

[0108] When the third valve port 2143 is connected to the second valve port 2142, the outlet of the compressor 209 is connected to the first refrigerant pipeline 201 or the fifth refrigerant port 2111.

[0109] In other embodiments, such as Figure 3 As shown, the outdoor unit 20 also includes a fifth switching valve 213 and a first reversing valve 214. The fifth switching valve 213 is used to switch all or part of the heat of the refrigerant to be exchanged in the domestic hot water module 50 when the domestic hot water module 50 is connected. The first reversing valve 214 is used to regulate the amount of refrigerant flowing to the refrigerant outlet pipe 203.

[0110] The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 203 via the first reversing valve 214, and the outlet of the compressor 209 is also connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111 via the first reversing valve 214. The second refrigerant outlet 2102 is connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111 via the fifth switching valve 213.

[0111] The first reversing valve 214 includes a first valve port 2141, a second valve port 2142, and a third valve port 2143. Specifically, the first valve port 2141 is connected to the outlet of the compressor 209, the second valve port 2142 is connected to the refrigerant outlet pipeline 203, and the third valve port 2143 is connected to the first refrigerant pipeline 201 and the fifth refrigerant port 2111.

[0112] When the first valve port 2141 is connected to the second valve port 2142, the outlet of the compressor 209 is connected to the refrigerant outlet pipeline 203.

[0113] When the first valve port 2141 is connected to the third valve port 2143, the outlet of the compressor 209 is connected to the first refrigerant pipeline 201 or the fifth refrigerant port 2111.

[0114] When the fifth switching valve 213 is opened, the second refrigerant outlet 2102 is connected to the first refrigerant pipeline 201 or the fifth refrigerant port 2111.

[0115] In some embodiments, as shown in FIG. 2, the outdoor main unit 20 further comprises an economizer module. The economizer module is configured to reduce the temperature of the refrigerant entering the outdoor-side heat exchanger 211, thereby improving the heat absorption performance of the outdoor-side heat exchanger 211 in a low-temperature environment and enhancing the subsequent heating effect. Figure 2

[0116] The first end of the economizer module is connected to the second refrigerant pipeline 202, and the second end of the economizer module is connected to the sixth refrigerant port 2112. The third refrigerant outlet 2103 is connected to the second end of the economizer module via the first throttling device 212.

[0117] In other embodiments, as shown in FIG. 3, the outdoor main unit 20 further comprises an economizer module and a liquid storage container 217. The first interface 2171 of the liquid storage container 217 is connected to the second refrigerant pipeline 202, and the third refrigerant outlet 2103 is connected to the second refrigerant pipeline 202 via the first throttling device 212. The second interface 2172 of the liquid storage container 217 is connected to the first end of the economizer module, and the second end of the economizer module is connected to the sixth refrigerant port 2112. Figure 1 Figure 3 In some embodiments, the economizer module comprises an economizer 215 and a second throttling device 216. The economizer 215 comprises a seventh refrigerant port 2151, an eighth refrigerant port 2152, a ninth refrigerant port 2153 connected to the seventh refrigerant port 2151, and a tenth refrigerant port 2154 connected to the eighth refrigerant port 2152. For example, the economizer 215 is a heat exchanger, and the second throttling device 216 is an electronic expansion valve or a thermal expansion valve. Here, the electronic expansion valve and the thermal expansion valve are only examples and do not limit the present application.

[0118] The second end of the economizer module is the ninth refrigerant port 2153. The first end of the economizer module is divided into two paths. One path is connected to the sixth refrigerant port 2112 via a main refrigerant line (i.e., sequentially via the seventh refrigerant port 2151 and the ninth refrigerant port 2153), and the other path is connected to the inlet of the compressor 209 via an auxiliary refrigerant line (i.e., sequentially via the second throttling device 216, the eighth refrigerant port 2152, and the tenth refrigerant port 2154).

[0119]

[0120] ​​​The embodiment adds the economizer module at the outlet of the indoor unit 10, so that the refrigerant from the indoor unit 10 passes through the main refrigerant path and the auxiliary refrigerant path respectively. The refrigerant in the auxiliary refrigerant path is throttled and cooled by the second throttling device 216, and can more efficiently absorb the heat of the refrigerant from the main refrigerant path in the economizer 215, so that the temperature of the refrigerant entering the outdoor heat exchanger 211 is lower, especially in cold winter, the temperature of the refrigerant can be lower than the outdoor temperature, thereby improving the heat absorption performance of the outdoor heat exchanger 211 in a low temperature environment, and improving the subsequent heating effect.

[0121] In some embodiments, the outdoor main unit 20 further comprises a second reversing valve 218 for switching between cooling mode and heating mode. The second refrigerant outlet 2102 is connected to the second reversing valve 218, specifically connected to the second reversing valve 218 through the first reversing valve 214, and the second reversing valve 218 is also connected to the first refrigerant path 201, the fifth refrigerant port 2111 and the inlet of the compressor 209.

[0122] The second reversing valve 218 comprises a fourth valve port 2181, a fifth valve port 2182, a sixth valve port 2183 and a seventh valve port 2184. The fourth valve port 2181 is connected to the outlet of the compressor 209 and the second refrigerant outlet 2102, the fifth valve port 2182 is connected to the fifth refrigerant port 2111, the sixth valve port 2183 is connected to the inlet of the compressor 209, and the seventh valve port 2184 is connected to the first refrigerant path 201. For example, the second reversing valve 218 is a four-way valve, which is only an example and does not limit the application, and can also be other valves.

[0123] When the fourth valve port 2181 and the fifth valve port 2182 are connected, the fifth refrigerant port 2111 is connected to the outlet of the compressor 209 and / or the second refrigerant outlet 2102.

[0124] When the fourth valve port 2181 and the seventh valve port 2184 are connected, the first refrigerant path 201 is connected to the outlet of the compressor 209 and / or the second refrigerant outlet 2102.

[0125] When the fifth valve port 2182 and the sixth valve port 2183 are connected, the fifth refrigerant port 2111 is connected to the inlet of the compressor 209.

[0126] When the seventh valve port 2184 and the sixth valve port 2183 are connected, the first refrigerant path 201 is connected to the inlet of the compressor 209.

[0127] In some embodiments, the outdoor main unit 20 further comprises a third throttling device 219, and the second end of the economizer module (specifically, the ninth refrigerant port 2153) is connected to the sixth refrigerant port 2112 through the third throttling device 219. For example, the third throttling device 219 is an electronic expansion valve or a thermal expansion valve. Here, the electronic expansion valve and the thermal expansion valve are only examples and do not limit the present application.

[0128] In the present embodiment, the third throttling device 219 can further reduce the temperature of the refrigerant entering the outdoor-side heat exchanger 211.

[0129] In addition, the heat pump system further comprises a one-way valve 220, and the sixth refrigerant port 2112 is connected to the second end of the economizer module (specifically, the ninth refrigerant port 2153) through the one-way valve 220, and the conduction direction of the one-way valve 220 is towards the second end of the economizer module. It should be noted that the direction of the one-way valve 220 refers to the flow direction of the refrigerant, not the spatial position.

[0130] In some embodiments, the outdoor main unit 20 further comprises a low-pressure gas-liquid separator 221, which is used to separate gaseous refrigerant and liquid refrigerant, and is arranged at the inlet end of the compressor 209. The tenth refrigerant port 2154 is connected to the low-pressure gas-liquid separator 221.

[0131] In some embodiments, the outdoor main unit 20 further comprises an oil separator 222 and an oil return pipe 223. The oil separator 222 is arranged at the outlet end of the compressor 209, and is used to separate the lubricating oil from the compressor 209 mixed in the refrigerant and return the lubricating oil to the compressor 209 through the oil return pipe 223.

[0132] In some embodiments, the heat pump system further comprises a fourth throttling device 70 arranged corresponding to each indoor unit 10, and the second refrigerant port 102 is connected to the corresponding tapping end in the liquid pipe 40 through the fourth throttling device 70. For example, the fourth throttling device 70 is an electronic expansion valve or a thermal expansion valve. Here, the electronic expansion valve and the thermal expansion valve are only examples and do not limit the present application.

[0133] In some embodiments, the indoor unit 10 is a ducted-type air conditioner or a ceiling-type air conditioner, which comprises an indoor-side heat exchanger (such as a fin-type heat exchanger) and a fan.

[0134] In some embodiments, the heat pump system further comprises a fresh air module arranged corresponding to each indoor unit 10, which is used to introduce fresh outdoor air and discharge indoor dirty air.

[0135] Completely, in some embodiments, such as Figure 1 As shown, the connection relationships between the components in the indoor unit are as follows:

[0136] One outlet of the compressor 209 is connected to the refrigerant outlet pipeline 203 via the fifth switching valve 213, and the refrigerant outlet pipeline 203 is equipped with the third switching valve 207. Another outlet of the compressor 209 is connected to the third valve port 2143 of the first reversing valve 214. The refrigerant inlet pipeline 204 is connected to the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and the refrigerant inlet pipeline 204 is equipped with the fourth switching valve 208. The second refrigerant outlet 2102 of the high-pressure gas-liquid separator 210 is connected to the first valve port 2141 of the first reversing valve 214. The second refrigerant pipeline 202 is equipped with the second switching valve 206, and the first interface 2171 of the liquid storage container 217 is connected to the second refrigerant pipeline 202. The third refrigerant outlet 2103 of the high-pressure gas-liquid separator 210 is connected via the first throttling device 212 between the second switching valve 206 and the first interface 2171 of the liquid storage container 217. The second valve port 2142 of the first reversing valve 214 is connected to the fourth valve port 2181 of the second reversing valve 218. The fifth valve port 2182 of the second reversing valve 218 is connected to the fifth refrigerant port 2111 of the outdoor heat exchanger 211. The sixth valve port 2183 of the second reversing valve 218 is connected to the inlet of the compressor 209 via the low-pressure gas-liquid separator 221. The seventh valve port 2184 of the second reversing valve 218 is connected to the first refrigerant pipeline 201, on which the first switching valve 205 is provided. The second port 2172 of the liquid storage container 217 is connected to the seventh refrigerant port 2151 of the economizer 215 via one path, and the other path of the second port 2172 of the liquid storage container 217 is connected to the eighth refrigerant port 2152 of the economizer 215 via the second throttling device 216. The ninth refrigerant port 2153 of the economizer 215 is connected to the sixth refrigerant port 2112 of the outdoor heat exchanger 211 via the third throttling device 219, and the other path of the ninth refrigerant port 2153 of the economizer 215 is connected to the sixth refrigerant port 2112 of the outdoor heat exchanger 211 via the one-way valve 220, with the one-way valve 220's conduction direction facing the ninth refrigerant port 2153 of the economizer 215. The tenth refrigerant port 2154 of the economizer 215 is connected to the inlet of the compressor 209 via the low-pressure gas-liquid separator 221.

[0137] Completely, in some embodiments, such as Figure 2As shown, the connection relationships between the components in the indoor unit are as follows:

[0138] One outlet of the compressor 209 is connected to the refrigerant outlet pipe 203 via the fifth switching valve 213, and the refrigerant outlet pipe 203 is equipped with the third switching valve 207. Another outlet of the compressor 209 is connected to the third valve port 2143 of the first reversing valve 214. The refrigerant inlet pipe 204 is connected to the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and the refrigerant inlet pipe 204 is equipped with the fourth switching valve 208. The second refrigerant outlet 2102 of the high-pressure gas-liquid separator 210 is connected to the first valve port 2141 of the first reversing valve 214. The second valve port 2142 of the first reversing valve 214 is connected to the fourth valve port 2181 of the second reversing valve 218. The fifth valve port 2182 of the second reversing valve 218 is connected to the fifth refrigerant port 2111 of the outdoor heat exchanger 211. The sixth port 2183 of the second reversing valve 218 is connected to the inlet of the compressor 209 via the low-pressure gas-liquid separator 221. The seventh port 2184 of the second reversing valve 218 is connected to the first refrigerant line 201, and the first refrigerant line 201 is equipped with the first switching valve 205. The second refrigerant line 202 is equipped with a second switching valve 206. One path of the second refrigerant line 202 is connected to the seventh refrigerant port 2151 of the economizer 215. The other path of the second refrigerant line 202 is connected to the eighth refrigerant port 2152 of the economizer 215 via the second throttling device 216. The ninth refrigerant port 2153 of the economizer 215 is connected to the sixth refrigerant port 2112 of the outdoor heat exchanger 211 via the third throttling device 219. The ninth refrigerant port 2153 of the economizer 215 is connected to the sixth refrigerant port 2112 of the outdoor heat exchanger 211 via the one-way valve 220, with the one-way valve 220 oriented towards the ninth refrigerant port 2153 of the economizer 215. The ninth refrigerant port 2153 of the economizer 215 is also connected to the third refrigerant outlet 2103 via the first throttling device 212. The tenth refrigerant port 2154 of the economizer 215 is connected to the inlet of the compressor 209 via the low-pressure gas-liquid separator 221. Figure 2 and Figure 1 The difference is, Figure 1 An additional liquid storage container 217 has been added.

[0139] Completely, in some embodiments, such as Figure 3 As shown, the connection relationships between the components in the indoor unit are as follows:

[0140] The outlet of the compressor 209 is connected with the first valve port 2141 of the first reversing valve 214, the second valve port 2142 of the first reversing valve 214 is connected with the refrigerant outlet pipeline 203, and the third valve port 2143 of the first reversing valve 214 is connected with the fourth valve port 2181 of the second reversing valve 218. The refrigerant inlet pipeline 204 is connected with the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and the fourth switch valve 208 is arranged on the refrigerant inlet pipeline 204. The second refrigerant outlet 2102 of the high-pressure gas-liquid separator 210 is connected with the fourth valve port 2181 of the second reversing valve 218 through the fifth switch valve 213. The second refrigerant pipeline 202 is provided with the second switch valve 206, and the first interface 2171 of the liquid storage container 217 is connected with the second refrigerant pipeline 202. The third refrigerant outlet 2103 of the high-pressure gas-liquid separator 210 is connected between the second switch valve 206 and the first interface 2171 of the liquid storage container 217 through the first throttling device 212. The second valve port 2142 of the first reversing valve 214 is connected with the fourth valve port 2181 of the second reversing valve 218. The fifth valve port 2182 of the second reversing valve 218 is connected with the fifth refrigerant port 2111 of the outdoor heat exchanger 211. The sixth valve port 2183 of the second reversing valve 218 is connected with the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. The seventh valve port 2184 of the second reversing valve 218 is connected with the first refrigerant pipeline 201, and the first refrigerant pipeline 201 is provided with the first switch valve 205. The second interface 2172 of the liquid storage container 217 is connected with the seventh refrigerant port 2151 of the economizer 215 in one way, and the second interface 2172 of the liquid storage container 217 is connected with the eighth refrigerant port 2152 of the economizer 215 through the second throttling device 216 in another way. The ninth refrigerant port 2153 of the economizer 215 is connected with the sixth refrigerant port 2112 of the outdoor heat exchanger 211 in one way through the third throttling device 219, and the ninth refrigerant port 2153 of the economizer 215 is connected with the sixth refrigerant port 2112 of the outdoor heat exchanger 211 in another way through the one-way valve 220, and the one-way valve 220 is in a conductive direction towards the ninth refrigerant port 2153 of the economizer 215. The tenth refrigerant port 2154 of the economizer 215 is connected with the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. Figure 3 With Figure 1 The difference is that the positions of the first reversing valve 214 and the fifth switch valve 213 are interchanged.

[0141] In different cases, the heat pump system corresponds to different valve port connections, and the following will be described in the case of Figure 1The refrigerant flow directions in each mode of the heat pump system shown are illustrated as follows:

[0142] As Figure 4As shown, in the refrigeration and total heat recovery hot water mode, the first throttling device 212, the fourth throttling device 70, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208 and the fifth switch valve 213 are opened, the seventh valve port 2184 of the second reversing valve 218 is connected with the sixth valve port 2183, and the hot water module 50 and the hydraulic module 60 are configured. That is, when hot water needs to be prepared quickly in the refrigeration mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the hot water heat exchanger 501 through the fifth switch valve 213 and the third switch valve 207, and the high-temperature gaseous refrigerant exchanges heat with the water in the hot water tank 502 in the hot water heat exchanger 501, and becomes medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the first refrigerant outlet 5012 of the hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is performed in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the third refrigerant outlet 2103 is pure liquid. The medium-temperature liquid refrigerant output from the third refrigerant outlet 2103 becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the first throttling device 212, and then enters the liquid pipe 40 through the second switch valve 206, and the medium-temperature liquid refrigerant enters the fourth throttling device 70 in the liquid pipe 40, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fourth throttling device 70, and then enters the second refrigerant port 102 of the indoor unit 10, and the low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 10, and the low-temperature liquid refrigerant evaporates into low-temperature gaseous refrigerant after absorbing heat from the indoor air, the indoor unit 10 blows out cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 101 of the indoor unit 10 enters the gas pipe 30. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 604 in the liquid pipe 40, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fifth throttling device 604, and then enters the fourth refrigerant port 6012 of the heat exchanger 601, and the low-temperature liquid refrigerant exchanges heat with water in the external terminal 80 in the heat exchanger 601, and the low-temperature liquid refrigerant evaporates into low-temperature gaseous refrigerant after absorbing heat from the water, and the water in the external terminal 80 becomes cold water, and the low-temperature gaseous refrigerant output from the third refrigerant port 6011 of the heat exchanger 601 enters the gas pipe 30. The low-temperature gaseous refrigerant output from the gas pipe 30 returns to the inlet of the compressor 209 again through the first switch valve 205, the seventh valve port 2184 and the sixth valve port 2183 of the first reversing valve 214 and the low-pressure gas-liquid separator 221, and reciprocally circulates.By configuring the hot water module 50, so that the outdoor heat exchanger 211 originally used for heat exchange with air during refrigeration is recycled to avoid heat waste in the outdoor heat exchanger 211 and air heat exchange, the recycled heat is exchanged with the water in the hot water tank 502 in the hot water heat exchanger 501, hot water is prepared quickly, energy utilization is improved, and heating speed is improved. And by configuring the water module 60, so that refrigeration can also achieve the effect of ground cooling and the like, improve energy utilization.

[0143] When the hot water reaches a certain temperature, it can be switched to a refrigeration and waste heat recovery hot water mode, such as Figure 5As shown, in the refrigeration and waste heat recovery mode, the fourth throttling device 70, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208, and the fifth switch valve 213 are opened, the first valve port 2141 of the first reversing valve 214 is connected with the second valve port 2142, the fourth valve port 2181 of the second reversing valve 218 is connected with the fifth valve port 2182, the seventh valve port 2184 of the second reversing valve 218 is connected with the sixth valve port 2183, and the hot water module 50 and the hydraulic module 60 are configured. That is, when hot water is needed in the refrigeration mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the hot water heat exchanger 501 through the fifth switch valve 213 and the third switch valve 207, and exchanges heat with the water in the hot water tank 502 in the hot water heat exchanger 501 to prepare hot water and become medium-temperature gaseous refrigerant. The medium-temperature gaseous refrigerant output from the first refrigerant outlet 5012 of the hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and is further separated into gas and liquid in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the second refrigerant outlet 2102 is pure gas. The medium-temperature gaseous refrigerant output from the second refrigerant outlet 2102 enters the fifth refrigerant port 2111 of the outdoor heat exchanger 211 through the first valve port 2141 and the second valve port 2142 of the first reversing valve 214 and the fourth valve port 2181 and the fifth valve port 2182 of the second reversing valve 218, and becomes medium-temperature liquid refrigerant after condensing and releasing heat in the outdoor heat exchanger 211. The medium-temperature liquid refrigerant output from the sixth refrigerant port 2112 of the outdoor heat exchanger 211 enters the second interface 2172 of the liquid storage container 217 through the check valve 220, the ninth refrigerant port 2153 and the seventh refrigerant port 2151 of the economizer 215, and the medium-temperature liquid refrigerant output from the first interface 2171 of the liquid storage container 217 enters the liquid pipe 40 through the second switch valve 206. The medium-temperature liquid refrigerant in the liquid pipe 40 enters the fourth throttling device 70, becomes low-temperature liquid refrigerant after throttling and cooling by the fourth throttling device 70, and then enters the second refrigerant port 102 of the indoor unit 10. The low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 10, evaporates into low-temperature gaseous refrigerant after absorbing heat from the indoor air, the indoor unit 10 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 101 of the indoor unit 10 enters the gas pipe 30.And, the medium temperature liquid refrigerant enters the fifth throttling device 604 in the liquid pipe 40, becomes low temperature liquid refrigerant with lower temperature after throttling and cooling by the fifth throttling device 604, then enters the fourth refrigerant port 6012 of the heat exchanger 601, and the low temperature liquid refrigerant exchanges heat with the water in the external end 80 in the heat exchanger 601, and the low temperature liquid refrigerant absorbs the heat of the water and evaporates into low temperature gaseous refrigerant, and the water in the external end 80 becomes cold water, and the low temperature gaseous refrigerant output by the third refrigerant port 6011 of the heat exchanger 601 enters the gas pipe 30. The low temperature gaseous refrigerant output by the gas pipe 30 returns to the inlet of the compressor 209 through the first switch valve 205, the seventh valve port 2184 and the sixth valve port 2183 of the first reversing valve 214 and the low pressure gas-liquid separator 221, and reciprocally circulates. By configuring the hot water module 50, at least part of the condensation heat of the outdoor heat exchanger 211 originally used for heat exchange with air is recycled to avoid at least part of the heat from being wasted by heat exchange between the outdoor heat exchanger 211 and air in summer, and the recycled heat is exchanged with the water in the water tank 502 in the heat recovery heat exchanger to prepare hot water, thereby improving energy utilization rate. And, by configuring the water module 60, the effect of ground cooling can be achieved while refrigeration, thereby improving energy utilization rate.

[0144] Specifically, Figure 5 And Figure 4 The difference between the embodiments shown in FIGS. 1 and 2 is that, Figure 5 In order to recycle at least part of the condensation heat of the outdoor heat exchanger 211 originally used for heat exchange with air, and Figure 4 In order to recycle all of the condensation heat of the outdoor heat exchanger 211 originally used for heat exchange with air.

[0145] As Figure 6As shown, in the refrigeration and waste heat recovery mode, the fourth throttling device 70, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208, and the fifth switch valve 213 are opened, the second valve port 2142 of the first reversing valve 214 is connected with the first valve port 2141 and the third valve port 2143, the fourth valve port 2181 of the second reversing valve 218 is connected with the fifth valve port 2182, the seventh valve port 2184 of the second reversing valve 218 is connected with the sixth valve port 2183, and the hot water module 50 and the hydraulic module 60 are configured. That is, when hot water is needed in the refrigeration mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the hot water heat exchanger 501 through the fifth switch valve 213 and the third switch valve 207, and the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the fifth refrigerant port 2111 of the outdoor heat exchanger 211 through the third valve port 2143 and the second valve port 2142 of the first reversing valve 214 and the fourth valve port 2181 and the fifth valve port 2182 of the second reversing valve 218. The high-temperature gaseous refrigerant in the hot water heat exchanger 501 exchanges heat with the water in the hot water tank 502, becomes medium-temperature gaseous refrigerant after preparing hot water, and the medium-temperature gaseous refrigerant output from the first refrigerant outlet 5012 of the hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is performed in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the second refrigerant outlet 2102 is pure gas. The medium-temperature gaseous refrigerant output from the second refrigerant outlet 2102 enters the fifth refrigerant port 2111 of the outdoor heat exchanger 211 through the first valve port 2141 and the second valve port 2142 of the first reversing valve 214 and the fourth valve port 2181 and the fifth valve port 2182 of the second reversing valve 218, and becomes medium-temperature liquid refrigerant after condensing and releasing heat in the outdoor heat exchanger 211.The medium-temperature liquid refrigerant outputted from the sixth refrigerant port 2112 of the outdoor-side heat exchanger 211 enters the second interface 2172 of the liquid storage container 217 through the one-way valve 220, the ninth refrigerant port 2153 and the seventh refrigerant port 2151 of the economizer 215, the medium-temperature liquid refrigerant outputted from the first interface 2171 of the liquid storage container 217 enters the liquid pipe 40 through the second switch valve 206, enters the fourth throttling device 70 in the liquid pipe 40, becomes low-temperature liquid refrigerant after throttling and temperature reduction of the fourth throttling device 70, then enters the second refrigerant port 102 of the indoor unit 10, exchanges heat with indoor air in the indoor unit 10, evaporates into low-temperature gaseous refrigerant after absorbing heat from the indoor air, the indoor unit 10 blows out cold air, and the low-temperature gaseous refrigerant outputted from the first refrigerant port 101 of the indoor unit 10 enters the gas pipe 30. And the medium-temperature liquid refrigerant enters the fifth throttling device 604 in the liquid pipe 40, becomes low-temperature liquid refrigerant after throttling and temperature reduction of the fifth throttling device 604, then enters the fourth refrigerant port 6012 of the heat exchanger 601, exchanges heat with water in the external terminal 80 in the heat exchanger 601, evaporates into low-temperature gaseous refrigerant after absorbing heat from the water, the water in the external terminal 80 becomes cold water, and the low-temperature gaseous refrigerant outputted from the third refrigerant port 6011 of the heat exchanger 601 enters the gas pipe 30. The low-temperature gaseous refrigerant outputted from the gas pipe 30 enters the inlet of the compressor 209 again through the first switch valve 205, the seventh valve port 2184 and the sixth valve port 2183 of the first reversing valve 214, and the low-pressure gas-liquid separator 221, and reciprocally circulates.

[0146] Specifically, Figure 6 And Figure 5 The difference between the embodiment shown in the figure and the embodiment shown in the figure is that, Figure 6 In the embodiment shown in the figure, one more refrigerant enters the outdoor-side heat exchanger 211 through the third valve port 2143 and the second valve port 2142 of the first reversing valve 214 and the fourth valve port 2181 and the fifth valve port 2182 of the second reversing valve 218, which can better control the amount of refrigerant entering the domestic hot water heat exchanger 501, and the refrigerant directly reaching the second reversing valve 218 from the compressor 209 can be more guaranteed to be pure gaseous refrigerant, and the pure gaseous refrigerant can more guarantee that the second reversing valve 218 has enough pressure difference for reversing, so the pressure loss of the refrigerant pipeline is smaller.

[0147] As Figure 7As shown, in the heating and hot water mode, the second throttling device 216, the third throttling device 219, the fourth throttling device 70, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208, and the fifth switch valve 213 are opened, the first valve port 2141 of the first reversing valve 214 is connected with the second valve port 2142, the fourth valve port 2181 of the second reversing valve 218 is connected with the seventh valve port 2184, the fifth valve port 2182 of the second reversing valve 218 is connected with the sixth valve port 2183, and the hot water module 50 and the hydraulic module 60 are arranged. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the hot water heat exchanger 501 through the fifth switch valve 213 and the third switch valve 207, and the high-temperature gaseous refrigerant exchanges heat with the water in the water tank 502 in the hot water heat exchanger 501 to become medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the first refrigerant outlet 5012 of the hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is performed in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the second refrigerant outlet 2102 is pure gaseous. The medium-temperature gaseous refrigerant output from the second refrigerant outlet 2102 enters the gas pipe 30 through the first valve port 2141 and the second valve port 2142 of the first reversing valve 214, the fourth valve port 2181 and the seventh valve port 2184 of the second reversing valve 218, and the first switch valve 205, and the medium-temperature gaseous refrigerant enters the first refrigerant port 101 of the indoor unit 10 in the gas pipe 30. The medium-temperature gaseous refrigerant exchanges heat with indoor air in the indoor unit 10, and the medium-temperature gaseous refrigerant condenses into medium-temperature liquid refrigerant after releasing heat to the indoor air. The indoor unit 10 blows out hot air, and the medium-temperature liquid refrigerant output from the second refrigerant port 102 of the indoor unit 10 becomes low-temperature liquid refrigerant after throttling and cooling by the fourth throttling device 70, and then the low-temperature liquid refrigerant output from the fourth throttling device 70 enters the liquid pipe 40. Moreover, the medium-temperature gaseous refrigerant enters the third refrigerant port 6011 of the heat exchanger 601 of the hydraulic module 60 in the gas pipe 30, and the medium-temperature gaseous refrigerant exchanges heat with water in the terminal 80 outside the heat exchanger 601 to become medium-temperature liquid refrigerant, and the medium-temperature liquid refrigerant output from the fourth refrigerant port 6012 of the heat exchanger 601 becomes low-temperature liquid refrigerant after throttling and cooling by the fifth throttling device 604, and then the low-temperature liquid refrigerant output from the fifth throttling device 604 enters the liquid pipe 40.The low-temperature liquid refrigerant output by the liquid pipe 40 enters the first interface 2171 of the liquid storage container 217 after passing through the second switch valve 206. The low-temperature liquid refrigerant output by the second interface 2172 of the liquid storage container 217 enters the main refrigerant path and the auxiliary refrigerant path. The low-temperature liquid refrigerant in the auxiliary refrigerant path is throttled and cooled by the second throttling device 216 to become low-temperature liquid refrigerant with a lower temperature. The low-temperature liquid refrigerant with a lower temperature absorbs heat from the refrigerant in the main refrigerant path in the economizer 215 to become high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant returns to the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. The low-temperature liquid refrigerant from the main refrigerant path is cooled by heat exchange to become low-temperature liquid refrigerant with a lower temperature, and then enters the third throttling device 219 to be throttled and cooled to become low-temperature liquid refrigerant with a lower temperature. The low-temperature liquid refrigerant with a lower temperature enters the sixth refrigerant port 2112 of the outdoor heat exchanger 211. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 211 to become low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the fifth refrigerant port 2111 of the outdoor heat exchanger 211 returns to the inlet of the compressor 209 through the fifth valve port 2182 and the sixth valve port 2183 of the second switch valve 218 and the low-pressure gas-liquid separator 221, and reciprocally circulates. By configuring the hot water module 50 and the hydraulic module 60, hot water can be prepared while heating, and the effects of floor heating and the like can be achieved, thereby improving energy utilization.

[0148] As Figure 8As shown, in the heating and hot water mode, the second throttling device 216, the third throttling device 219, the fourth throttling device 70, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208, and the fifth switch valve 213 are opened, the second valve port 2142 of the first reversing valve 214 is connected with the first valve port 2141 and the third valve port 2143, the fourth valve port 2181 of the second reversing valve 218 is connected with the seventh valve port 2184, the fifth valve port 2182 of the second reversing valve 218 is connected with the sixth valve port 2183, and the hot water module 50 and the hydraulic module 60 are arranged. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the hot water heat exchanger 501 through the fifth switch valve 213 and the third switch valve 207, and the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the gas pipe 30 through the third valve port 2143 and the second valve port 2142 of the first reversing valve 214, the fourth valve port 2181 and the seventh valve port 2184 of the second reversing valve 218, and the first switch valve 205. The high-temperature gaseous refrigerant in the hot water heat exchanger 501 exchanges heat with the water in the water tank 502, becomes medium-temperature gaseous refrigerant after preparing hot water, and the medium-temperature gaseous refrigerant output from the first refrigerant outlet 5012 of the hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is performed in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the second refrigerant outlet 2102 is pure gas. The medium-temperature gaseous refrigerant output from the second refrigerant outlet 2102 enters the gas pipe 30 through the first valve port 2141 and the second valve port 2142 of the first reversing valve 214, the fourth valve port 2181 and the seventh valve port 2184 of the second reversing valve 218, and the first switch valve 205. The medium-temperature gaseous refrigerant in the gas pipe 30 enters the first refrigerant port 101 of the indoor unit 10, the medium-temperature gaseous refrigerant exchanges heat with indoor air in the indoor unit 10, and the medium-temperature gaseous refrigerant releases heat to the indoor air and condenses into medium-temperature liquid refrigerant, the indoor unit 10 blows hot air, and the medium-temperature liquid refrigerant output from the second refrigerant port 102 of the indoor unit 10 is cooled to low-temperature liquid refrigerant by the fourth throttling device 70, and then the low-temperature liquid refrigerant output from the fourth throttling device 70 enters the liquid pipe 40.And, the medium-temperature gaseous refrigerant enters the third refrigerant port 6011 of the heat exchanger 601 of the water module 60 in the gas pipe 30, and becomes medium-temperature liquid refrigerant after heat exchange with water in the external terminal 80 in the heat exchanger 601. The medium-temperature liquid refrigerant output by the fourth refrigerant port 6012 of the heat exchanger 601 becomes low-temperature liquid refrigerant after throttling and temperature reduction by the fifth throttling device 604, and then the low-temperature liquid refrigerant output by the fifth throttling device 604 enters the liquid pipe 40. The low-temperature liquid refrigerant output by the liquid pipe 40 enters the first interface 2171 of the liquid storage container 217 after passing through the second switch valve 206, and the low-temperature liquid refrigerant output by the second interface 2172 of the liquid storage container 217 enters the main refrigerant line and the auxiliary refrigerant line. The low-temperature liquid refrigerant in the auxiliary refrigerant line becomes low-temperature liquid refrigerant with a lower temperature after throttling and temperature reduction by the second throttling device 216, becomes high-temperature gaseous refrigerant after absorbing heat from the main refrigerant line in the economizer 215, and finally returns to the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. The low-temperature liquid refrigerant from the main refrigerant line becomes low-temperature liquid refrigerant with a lower temperature after heat exchange, enters the third throttling device 219 for throttling and temperature reduction, becomes low-temperature liquid refrigerant with a lower temperature, enters the sixth refrigerant port 2112 of the outdoor side heat exchanger 211, and becomes low-temperature gaseous refrigerant after evaporation and heat absorption in the outdoor side heat exchanger 211. The low-temperature gaseous refrigerant output by the fifth refrigerant port 2111 of the outdoor side heat exchanger 211 returns to the inlet of the compressor 209 after passing through the fifth valve port 2182 and the sixth valve port 2183 of the second switch valve 218 and the low-pressure gas-liquid separator 221, and reciprocally circulates.

[0149] Specifically, Figure 8 And Figure 7 The difference between the embodiment shown in the figure and the embodiment shown in the figure is that Figure 8 In the embodiment shown in the figure, one more first valve port 2141 and second valve port 2142 of the first switch valve 214, fourth valve port 2181 and seventh valve port 2184 of the second switch valve 218, and the first switch valve 205 enter the gas pipe 30, which can better control the amount of refrigerant entering the domestic hot water heat exchanger 501, and the refrigerant directly reaching the second switch valve 218 from the compressor can ensure that the refrigerant is gaseous, and pure gaseous refrigerant can better ensure that the second switch valve 218 has enough pressure difference for switching, so the pressure loss of the refrigerant pipeline is smaller.

[0150] As Figure 9As shown, in the pure hot water mode, the first throttling device 212, the second throttling device 216, the third throttling device 219, the third on-off valve 207, the fourth on-off valve 208 and the fifth on-off valve 213 are opened, the fifth valve port 2182 of the second reversing valve 218 is connected with the sixth valve port 2183, and the domestic hot water module 50 is configured. That is, when only hot water needs to be prepared, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the domestic hot water heat exchanger 501 through the fifth on-off valve 213 and the third on-off valve 207, and the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 502 in the domestic hot water heat exchanger 501 to become medium-temperature liquid refrigerant after preparing hot water. The medium-temperature liquid refrigerant output from the first refrigerant outlet 5012 of the domestic hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is performed in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the third refrigerant outlet 2103 is pure liquid. The medium-temperature liquid refrigerant output from the third refrigerant outlet 2103 becomes low-temperature liquid refrigerant with a lower temperature after throttling and cooling by the first throttling device 212, and then enters the first interface 2171 of the liquid storage container 217. The low-temperature liquid refrigerant output from the second interface 2172 of the liquid storage container 217 enters the main refrigerant line and the auxiliary refrigerant line. The low-temperature liquid refrigerant in the auxiliary refrigerant line becomes low-temperature liquid refrigerant with a lower temperature after throttling and cooling by the second throttling device 216, and becomes high-temperature gaseous refrigerant after absorbing heat from the main refrigerant line in the economizer 215, and finally returns to the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. The low-temperature liquid refrigerant from the main refrigerant line becomes low-temperature liquid refrigerant with a lower temperature after heat exchange, and then enters the third throttling device 219 for throttling and cooling to become low-temperature liquid refrigerant with a lower temperature, and then enters the sixth refrigerant port 2112 of the outdoor heat exchanger 211. The low-temperature gaseous refrigerant output from the fifth refrigerant port 2111 of the outdoor heat exchanger 211 returns to the inlet of the compressor 209 through the fifth valve port 2182 and the sixth valve port 2183 of the second reversing valve 218 and the low-pressure gas-liquid separator 221, and reciprocally circulates.

[0151] As Figure 10As shown, in the refrigeration mode, the fourth throttling device 70, the first switch valve 205 and the second switch valve 206 are opened, the third valve port 2143 of the first reversing valve 214 is communicated with the second valve port 2142, the fourth valve port 2181 of the second reversing valve 218 is communicated with the fifth valve port 2182, the seventh valve port 2184 of the second reversing valve 218 is communicated with the sixth valve port 2183, and the hydraulic module 60 is arranged. That is, when refrigerating in summer, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the fifth refrigerant port 2111 of the outdoor heat exchanger 211 through the third valve port 2143 and the second valve port 2142 of the first reversing valve 214 and the fourth valve port 2181 and the fifth valve port 2182 of the second reversing valve 218, and the medium-temperature gaseous refrigerant becomes medium-temperature liquid refrigerant after being condensed and releasing heat in the outdoor heat exchanger 211. The medium-temperature liquid refrigerant output from the sixth refrigerant port 2112 of the outdoor heat exchanger 211 enters the second interface 2172 of the liquid storage container 217 through the one-way valve 220, the ninth refrigerant port 2153 and the seventh refrigerant port 2151 of the economizer 215, the medium-temperature liquid refrigerant output from the first interface 2171 of the liquid storage container 217 enters the liquid pipe 40 through the second switch valve 206, and the medium-temperature liquid refrigerant enters the fourth throttling device 70 in the liquid pipe 40 and becomes low-temperature liquid refrigerant after throttling and temperature reduction, and then enters the second refrigerant port 102 of the indoor unit 10, the low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 10, and the low-temperature liquid refrigerant absorbs heat from the indoor air and evaporates to become low-temperature gaseous refrigerant, the indoor unit 10 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 101 of the indoor unit 10 enters the gas pipe 30. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 604 in the liquid pipe 40, becomes low-temperature liquid refrigerant after throttling and temperature reduction, and then enters the fourth refrigerant port 6012 of the heat exchanger 601, the low-temperature liquid refrigerant exchanges heat with water in the external terminal 80 in the heat exchanger 601, and the low-temperature liquid refrigerant absorbs heat from the water and evaporates to become low-temperature gaseous refrigerant, the water in the external terminal 80 becomes cold water, and the low-temperature gaseous refrigerant output from the third refrigerant port 6011 of the heat exchanger 601 enters the gas pipe 30. The low-temperature gaseous refrigerant output from the gas pipe 30 returns to the inlet of the compressor 209 through the first switch valve 205, the seventh valve port 2184 and the sixth valve port 2183 of the first reversing valve 214 and the low-pressure gas-liquid separator 221, and reciprocally circulates. By arranging the hydraulic module 60, refrigeration can be realized at the same time, and the energy utilization rate is improved.

[0152] As Figure 11As shown, in the heating mode, the second throttling device 216, the third throttling device 219, the fourth throttling device 70, the first switch valve 205 and the second switch valve 206 are opened, the second valve port 2142 of the first reversing valve 214 is communicated with the third valve port 2143, the fourth valve port 2181 of the second reversing valve 218 is communicated with the seventh valve port 2184, the fifth valve port 2182 of the second reversing valve 218 is communicated with the sixth valve port 2183, and the hydraulic module 60 is arranged. That is, when heating in winter, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the gas pipe 30 through the third valve port 2143 and the second valve port 2142 of the first reversing valve 214, the fourth valve port 2181 and the seventh valve port 2184 of the second reversing valve 218, and the first switch valve 205. The medium-temperature gaseous refrigerant enters the first refrigerant port 101 of the indoor unit 10 in the gas pipe 30, and the medium-temperature gaseous refrigerant exchanges heat with indoor air in the indoor unit 10. After the medium-temperature gaseous refrigerant releases heat to the indoor air, it condenses into medium-temperature liquid refrigerant. The indoor unit 10 blows hot air, and the second refrigerant port 102 of the indoor unit 10 outputs medium-temperature liquid refrigerant which is cooled by the fourth throttling device 70 to become low-temperature liquid refrigerant, and then the low-temperature liquid refrigerant output by the fourth throttling device 70 enters the liquid pipe 40. Moreover, the medium-temperature gaseous refrigerant enters the third refrigerant port 6011 of the heat exchanger 601 of the hydraulic module 60 in the gas pipe 30, and the medium-temperature gaseous refrigerant exchanges heat with water in the external terminal 80 in the heat exchanger 601 to become medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the fourth refrigerant port 6012 of the heat exchanger 601 is throttled by the fifth throttling device 604 to become low-temperature liquid refrigerant, and then the low-temperature liquid refrigerant output by the fifth throttling device 604 enters the liquid pipe 40.The low-temperature liquid refrigerant output by the liquid pipe 40 enters the first interface 2171 of the liquid storage container 217 after passing through the second switch valve 206. The low-temperature liquid refrigerant output by the second interface 2172 of the liquid storage container 217 enters the main refrigerant path and the auxiliary refrigerant path. The low-temperature liquid refrigerant in the auxiliary refrigerant path is throttled and cooled by the second throttling device 216 to become low-temperature liquid refrigerant with a lower temperature. The low-temperature liquid refrigerant with a lower temperature absorbs heat from the main refrigerant path in the economizer 215 to become high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant returns to the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. The low-temperature liquid refrigerant from the main refrigerant path is cooled by heat exchange to become low-temperature liquid refrigerant with a lower temperature, and then enters the third throttling device 219 to be throttled and cooled to become low-temperature liquid refrigerant with a lower temperature. The low-temperature liquid refrigerant enters the sixth refrigerant port 2112 of the outdoor heat exchanger 211. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 211 to become low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the fifth refrigerant port 2111 of the outdoor heat exchanger 211 returns to the inlet of the compressor 209 through the fifth valve port 2182 and the sixth valve port 2183 of the second reversing valve 218 and the low-pressure gas-liquid separator 221, and reciprocally circulates. By configuring the hydraulic module 60, heating can also achieve the effect of floor heating and the like, thereby improving energy utilization.

[0153] It should be noted that the above high, medium and low temperatures are only relative descriptions, and the gaseous refrigerant can also refer to a gas-liquid two-phase state or a gaseous state, which is not limited herein.

[0154] In different cases, Figure 2 The heat pump system shown also corresponds to different valve port connections and different operating modes, wherein the refrigeration and waste heat recovery hot water production mode, the heating and hot water production mode, the refrigeration mode and the heating mode are the same as Figure 1 The refrigerant flow direction of the heat pump system shown is the same as that of the heat pump system shown in FIG. 1, except that the liquid storage container 217 is omitted, which will not be described herein again. However, Figure 2 The refrigeration and waste heat recovery hot water production mode and the hot water production mode of the heat pump system shown are as follows:

[0155] As Figure 12As shown, in the refrigeration and total heat recovery hot water mode, the first throttling device 212, the fourth throttling device 70, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208 and the fifth switch valve 213 are opened, the seventh valve port 2184 of the second reversing valve 218 is connected with the sixth valve port 2183, and the hot water module 50 and the hydraulic module 60 are configured. That is, when hot water needs to be prepared quickly in the refrigeration mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the hot water heat exchanger 501 through the fifth switch valve 213 and the third switch valve 207, and the high-temperature gaseous refrigerant exchanges heat with the water in the hot water tank 502 in the hot water heat exchanger 501, and becomes medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the first refrigerant outlet 5012 of the hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is performed in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output from the third refrigerant outlet 2103 is pure liquid. The medium-temperature liquid refrigerant output from the third refrigerant outlet 2103 becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the first throttling device 212, and then enters the liquid pipe 40 through the ninth refrigerant port 2153 and the seventh refrigerant port 2151 of the economizer 215 and the second switch valve 206, the medium-temperature liquid refrigerant enters the fourth throttling device 70 in the liquid pipe 40, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fourth throttling device 70, and then enters the second refrigerant port 102 of the indoor unit 10, the low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 10, and the low-temperature liquid refrigerant absorbs heat from the indoor air to evaporate into low-temperature gaseous refrigerant, the indoor unit 10 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 101 of the indoor unit 10 enters the gas pipe 30. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 604 in the liquid pipe 40, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fifth throttling device 604, and then enters the fourth refrigerant port 6012 of the heat exchanger 601, the low-temperature liquid refrigerant exchanges heat with water in the external terminal 80 in the heat exchanger 601, and the low-temperature liquid refrigerant absorbs heat from the water to evaporate into low-temperature gaseous refrigerant, and the water in the external terminal 80 becomes cold water, and the low-temperature gaseous refrigerant output from the third refrigerant port 6011 of the heat exchanger 601 enters the gas pipe 30. The low-temperature gaseous refrigerant output from the gas pipe 30 passes through the first switch valve 205, the seventh valve port 2184 of the first reversing valve 214 and the sixth valve port 2183, and then returns to the inlet of the compressor 209 through the low-pressure gas-liquid separator 221, and reciprocally circulates.

[0156] like Figure 13 As shown, in pure hot water mode, the first throttling device 212, the third throttling device 219, the third switching valve 207, the fourth switching valve 208 and the fifth switching valve 213 are opened, the fifth valve port 2182 of the second reversing valve 218 is connected to the sixth valve port 2183, and a domestic hot water module 50 is configured. That is, when only hot water needs to be produced, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 5011 of the domestic hot water heat exchanger 501 after passing through the fifth switch valve 213 and the third switch valve 207. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 502 in the domestic hot water heat exchanger 501, and becomes a medium-temperature liquid refrigerant after producing hot water. The medium-temperature liquid refrigerant output from the first refrigerant outlet 5012 of the domestic hot water heat exchanger 501 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, where further gas-liquid separation is carried out to ensure that the refrigerant output from the third refrigerant outlet 2103 is pure liquid. The medium-temperature liquid refrigerant output from the third refrigerant outlet 2103 is throttled and cooled by the first throttling device 212, becoming a lower-temperature liquid refrigerant. Then, it is further throttled and cooled by the third throttling device 219, becoming an even lower-temperature liquid refrigerant. The low-temperature liquid refrigerant output from the third throttling device 219 enters the sixth refrigerant port 2112 of the outdoor heat exchanger 211. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 211, becoming a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output from the fifth refrigerant port 2111 of the outdoor heat exchanger 211 passes through the fifth valve port 2182 and the sixth valve port 2183 of the second reversing valve 218 and the low-pressure gas-liquid separator 221 before returning to the inlet of the compressor 209, repeating the cycle.

[0157] In different situations, Figure 3 The heat pump system shown will also be connected to different valve ports, and the refrigerant flow directions for each mode are illustrated with... Figure 1 The heat pump system shown is the same, except that the switching of the fifth switching valve 213 and the conduction of the first reversing valve 214 are different. Other details will not be repeated. Specifically:

[0158] In the domestic hot water mode and the pure hot water mode, the first valve port 2141 of the first reversing valve 214 is connected to the second valve port 2142.

[0159] In the refrigeration and waste heat recovery hot water mode and the heating and hot water mode, the first valve port 2141 of the first reversing valve 214 is in communication with the second valve port 2142, or the first valve port 2141 of the first reversing valve 214 is in communication with the second valve port 2142 and the third valve port 2143, and the fifth switch valve 213 is opened.

[0160] In the refrigeration and heating mode, the first valve port 2141 of the first reversing valve 214 is in communication with the third valve port 2143.

[0161] By implementing the utility model, the following beneficial effects are achieved:

[0162] The outdoor main machine 20 has the refrigerant outlet pipeline 203 and the refrigerant inlet pipeline 204 for externally connecting the hot water module 50, and has the liquid pipe 40 and the gas pipe 30 for externally connecting the hydraulic module 60, so that the hot water module and the hydraulic module can be modularized, thereby reducing the weight of the outdoor main machine 20, enabling the main machine integration to the system integration, and improving flexibility. For example, users in the middle and lower reaches of the Yangtze River can simultaneously select to install the hydraulic module 60, the hot water module 50 and the indoor machine 10, and users in Guangdong, Hainan and Southeast Asia can only select the hot water module 50 and the indoor machine 10.

[0163] It can be understood that the above embodiments only express some implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the patent scope of the utility model. It should be noted that for ordinary skilled persons in the art, the above embodiments or technical features can be freely combined without departing from the concept of the utility model, and some modifications and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "in some embodiments" can be freely combined with any of the above embodiments. Therefore, any equivalent transformation and modification within the scope of the claims of the utility model should belong to the scope of the claims of the utility model.

Claims

1. A heat pump system, characterized by, Comprise: At least two indoor units, the indoor units comprising a first refrigerant port and a second refrigerant port in communication with the first refrigerant port; An outdoor main unit, the outdoor main unit comprising a first refrigerant pipeline, a second refrigerant pipeline, a refrigerant outlet pipeline and a refrigerant inlet pipeline; A gas pipeline and a liquid pipeline; The first refrigerant pipeline is connected to the total interface end of the gas pipeline; In each of the indoor units, the first refrigerant port is connected to the corresponding branch interface end in the gas pipeline, and the second refrigerant port is connected to the corresponding branch interface end in the liquid pipeline; The second refrigerant pipeline is connected to the total interface end of the liquid pipeline; The refrigerant outlet pipeline and the refrigerant inlet pipeline are used to externally connect a domestic hot water module to prepare hot water through heat exchange between refrigerant and water; The liquid pipeline and the gas pipeline are also used to externally connect a hydraulic module to achieve heat exchange between refrigerant and water.

2. The heat pump system of claim 1, wherein, The outdoor main unit further comprises: A first on-off valve provided on the first refrigerant pipeline; A second on-off valve provided on the second refrigerant pipeline; A third on-off valve provided on the refrigerant outlet pipeline; and A fourth on-off valve provided on the refrigerant inlet pipeline.

3. The heat pump system of claim 1, wherein, The heat pump system further comprises the domestic hot water module, which comprises: A domestic hot water heat exchanger comprising a first refrigerant inlet, a first refrigerant outlet in communication with the first refrigerant inlet, a first water inlet and a first water outlet in communication with the first water inlet, the first refrigerant inlet being connected to the refrigerant outlet pipeline, and the first refrigerant outlet being connected to the refrigerant inlet pipeline; and A domestic water tank for storing domestic water, the domestic water tank being connected to the first water inlet and the first water outlet, respectively.

4. The heat pump system according to any one of claims 1 to 3, characterized in that, The heat pump system further comprises at least one hydraulic module, which comprises: A heat exchanger comprising a third refrigerant port, a fourth refrigerant port in communication with the third refrigerant port, a second water inlet and a second water outlet in communication with the second water inlet; The third refrigerant port is connected to the corresponding branch interface end in the gas pipeline, and the fourth refrigerant port is connected to the corresponding branch interface end in the liquid pipeline; the second water inlet and the second water outlet are used to externally connect the terminal.

5. The heat pump system of claim 1, wherein, The outdoor main unit further comprises: A compressor for compressing refrigerant; A high-pressure gas-liquid separator comprising a second refrigerant inlet, a second refrigerant outlet in communication with the second refrigerant inlet and a third refrigerant outlet in communication with the second refrigerant inlet; the second refrigerant outlet is used to output gaseous refrigerant after gas-liquid separation, and the third refrigerant outlet is used to output liquid refrigerant after gas-liquid separation; An outdoor side heat exchanger comprising a fifth refrigerant port and a sixth refrigerant port in communication with the fifth refrigerant port; and A first throttling device; The outlet of the compressor is connected to the refrigerant outlet pipeline; The second refrigerant inlet is connected to the refrigerant inlet pipeline; The second refrigerant outlet is connected with the first refrigerant pipeline and the fifth refrigerant port; The third refrigerant outlet is connected with the second refrigerant pipeline and the sixth refrigerant port through the first throttling device, the second refrigerant pipeline is connected with the sixth refrigerant port, and the fifth refrigerant port and the first refrigerant pipeline are connected with the inlet of the compressor.

6. The heat pump system of claim 5, wherein, The outdoor main machine further comprises a fifth switch valve and a first reversing valve; The outlet of the compressor is connected with the refrigerant outlet pipeline through the fifth switch valve, and the outlet of the compressor is connected with the first refrigerant pipeline and the fifth refrigerant port through the first reversing valve; The second refrigerant outlet is connected with the first refrigerant pipeline and the fifth refrigerant port through the first reversing valve; The outlet of the compressor is connected with the refrigerant outlet pipeline through the first reversing valve, and the outlet of the compressor is connected with the first refrigerant pipeline and the fifth refrigerant port through the first reversing valve; The second refrigerant outlet is connected with the first refrigerant pipeline and the fifth refrigerant port through the fifth switch valve.

7. The heat pump system of claim 6, wherein, The first reversing valve comprises a first valve port, a second valve port and a third valve port; The first valve port is connected with the second refrigerant outlet, the second valve port is connected with the first refrigerant pipeline and the fifth refrigerant port, and the third valve port is connected with the outlet of the compressor; The first valve port is connected with the outlet of the compressor, the second valve port is connected with the refrigerant outlet pipeline, and the third valve port is connected with the first refrigerant pipeline and the fifth refrigerant port.

8. The heat pump system of claim 5, wherein, The outdoor main machine further comprises an economic module; The first end of the economic module is connected with the second refrigerant pipeline, the second end of the economic module is connected with the sixth refrigerant port, and the third refrigerant outlet is connected with the second end of the economic module through the first throttling device.

9. The heat pump system of claim 5, wherein, The outdoor main machine further comprises an economic module and a liquid storage container; The first interface of the liquid storage container is connected with the second refrigerant pipeline, and the third refrigerant outlet is connected with the second refrigerant pipeline through the first throttling device; the second interface of the liquid storage container is connected with the first end of the economic module, and the second end of the economic module is connected with the sixth refrigerant port.

10. The heat pump system of claim 5, wherein, The outdoor main machine further comprises a second reversing valve; The second refrigerant outlet is connected with the first refrigerant pipeline and the fifth refrigerant port through the second reversing valve; the fifth refrigerant port and the first refrigerant pipeline are connected with the inlet of the compressor through the second reversing valve.

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