Hot water module and heat pump system

Abstract

The utility model discloses a hot water module and a heat pump system. The hot water module comprises a domestic water tank, a first water pump, an electric auxiliary heater and a domestic hot water heat exchanger. The domestic hot water heat exchanger comprises a first refrigerant inlet, a first refrigerant outlet, a first water inlet and a first water outlet. And the electric auxiliary heater is arranged in the domestic water tank. The first water inlet and the first water outlet are respectively connected with the domestic water tank, and the first water pump is connected between the domestic hot water heat exchanger and the domestic water tank. The first refrigerant inlet is used for being externally connected with a refrigerant outlet pipeline of an outdoor main machine integrating cooling, heating and heating, the first refrigerant outlet is used for being externally connected with a refrigerant inlet pipeline of the outdoor main machine integrating cooling, heating and heating, and the domestic hot water heat exchanger is used for conducting heat exchange on refrigerants from the outdoor main machine and water in the domestic water tank to produce domestic hot water. The utility model discloses a modularized hot water module which can be used as an independent module outside an outdoor host, so that the hot water module can be selected according to the requirements of different users, and the flexibility is improved.

Description

TECHNICAL FIELD

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

[0002] Many existing heating equipment have the function of making domestic hot water, and the specific form is that the domestic hot water tank is built in the host or the domestic hot water tank is externally arranged but the domestic hot water heat exchanger and the water pump are arranged in the host, so that the host is too heavy or the domestic hot water heat exchanger and the water pump arranged in the host are redundant when the user does not need to make domestic hot water, leading to low configuration flexibility of the domestic hot water function. INVENTION CONTENTS

[0003] The technical problem to be solved by the utility model is that at least one defect of the related technology mentioned in the above background technology exists: the configuration flexibility of the domestic hot water function of the existing heating equipment is low, and a hot water module and heat pump system are provided.

[0004] The utility model adopts the technical scheme in the technical solutions: a hot water module is constructed, comprising:

[0005] A domestic water tank and a first water pump;

[0006] An electric auxiliary heater, which is arranged in the domestic water tank; and

[0007] A domestic hot water heat exchanger, which comprises a first refrigerant inlet, a first refrigerant outlet connected with the first refrigerant inlet, a first water inlet and a first water outlet connected with the first water inlet;

[0008] The first water inlet and the first water outlet are connected with the domestic water tank respectively, the first water pump is connected between the domestic hot water heat exchanger and the domestic water tank, and the first water pump is used to provide power for water circulation between the domestic hot water heat exchanger and the domestic water tank;

[0009] The first refrigerant inlet is used to externally connect the refrigerant outlet pipeline of a cold and warm heat integrated outdoor host, the first refrigerant outlet is used to externally connect the refrigerant inlet pipeline of the cold and warm heat integrated outdoor host, the domestic hot water heat exchanger is used to exchange heat between the refrigerant from the outdoor host and the water in the domestic water tank, and domestic hot water is made.

[0010] In some embodiments, the domestic water tank comprises a first water outlet and a first water return port;

[0011] The first water outlet and the first water inlet are connected to form a water inlet pipeline, the first water outlet and the first water return are connected to form a water outlet pipeline, and the first water pump is arranged on the water inlet pipeline or the water outlet pipeline.

[0012] In some embodiments, the domestic water tank further comprises a cold water inlet for supplementing cold water and a hot water outlet for outputting hot water.

[0013] In some embodiments, the hot water module further comprises:

[0014] A second water pump, an inlet of the second water pump being connected to a water pipe of an external hot water using device, and an outlet of the second water pump being connected to the cold water inlet.

[0015] In some embodiments, the first water return and the hot water outlet are located above the domestic water tank, and the first water outlet and the cold water inlet are located below the domestic water tank.

[0016] In some embodiments, the hot water module further comprises:

[0017] A hot water on-off valve connected between the first water outlet and the domestic water tank.

[0018] In some embodiments, the hot water module further comprises:

[0019] A temperature detector arranged in the domestic water tank.

[0020] In some embodiments, the domestic hot water heat exchanger is a plate heat exchanger or a double-pipe heat exchanger.

[0021] The utility model further constructs a kind of heat pump system, comprising: the hot water module and the outdoor main machine of any one described above;

[0022] Wherein, the outdoor main machine includes the refrigerant outlet pipeline and the refrigerant inlet pipeline, the refrigerant outlet pipeline is connected with the first refrigerant inlet, and the refrigerant inlet pipeline is connected with the first refrigerant outlet.

[0023] In some embodiments, the heat pump system further comprises at least two indoor units, an air pipe and a liquid pipe;The indoor unit includes a first refrigerant port and a second refrigerant port connected to the first refrigerant port;

[0024] The outdoor main machine further includes a first refrigerant pipeline and a second refrigerant pipeline;

[0025] Wherein, the first refrigerant pipeline is connected with the total interface end of the air pipe;

[0026] The first refrigerant port is connected with a corresponding branch port in the gas pipe, and the second refrigerant port is connected with a corresponding branch port in the liquid pipe.

[0027] The second refrigerant pipe is connected with the total port of the liquid pipe.

[0028] By implementing the utility model, the following beneficial effects are achieved:

[0029] The hot water module can be used as a separate module outside the outdoor main machine, so that the hot water module can be selected according to the requirements of different users, and flexibility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] The utility model will be further described below in combination with the drawings and embodiments, and the drawings are as follows:

[0031] Figure 1 A schematic view of the hot water module is shown;

[0032] Figure 2 The first schematic view of the heat pump system is shown;

[0033] Figure 3 The second schematic view of the heat pump system is shown;

[0034] Figure 4 The third schematic view of the heat pump system is shown;

[0035] Figure 5 is Figure 2 The refrigerant flow direction schematic view of the heat pump system for producing domestic hot water through the full heat recovery mode while refrigerating is shown;

[0036] Figure 6 is Figure 2 The first refrigerant flow direction schematic view of the heat pump system for producing domestic hot water through the partial heat recovery mode while refrigerating is shown;

[0037] Figure 7 is Figure 2 The second refrigerant flow direction schematic view of the heat pump system for producing domestic hot water through the partial heat recovery mode while refrigerating is shown;

[0038] Figure 8 is Figure 2 The first refrigerant flow direction schematic view of the heat pump system for producing domestic hot water while refrigerating is shown;

[0039] Figure 9 is Figure 2 The second refrigerant flow direction schematic view of the heat pump system for producing domestic hot water while refrigerating is shown;

[0040] Figure 10 is Figure 2 A refrigerant flow direction schematic view of the heat pump system when making pure domestic hot water is shown in FIG. 5.

[0041] Figure 11 is Figure 2 A refrigerant flow direction schematic view of the heat pump system when making pure domestic hot water is shown in FIG. 5.

[0042] Figure 12 is Figure 2 A refrigerant flow direction schematic view of the heat pump system when making pure domestic hot water is shown in FIG. 5.

[0043] Figure 13 is Figure 3 A refrigerant flow direction schematic view of the heat pump system when making pure domestic hot water is shown in FIG. 5.

[0044] Figure 14 is Figure 3 A refrigerant flow direction schematic view of the heat pump system when making pure domestic hot water is shown in FIG. 5. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings.

[0046] 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.

[0047] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 present application. 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 of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0048] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term "installation", "link", "connection", "set in", "located" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be chemical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element inside intercommunication. For ordinary skilled in the art, can understand the concrete meaning of above-mentioned term in the utility model through specific situation.

[0049] It needs to explain here that the connection between the following ports, the port and the component or between components is only a physical structure connection, and the intercommunication relationship and the refrigerant flow direction relationship are not uniquely limited.

[0050] As Figure 1 Indicated, some embodiments of the utility model discloses a hot water module 10, including domestic water tank 101, first water pump 102, electric auxiliary heater 103 and domestic hot water heat exchanger 104, and the specific as follows:

[0051] The electric auxiliary heater 103 is arranged in the domestic water tank 101, and is used for auxiliary heating.It needs to explain that the electric auxiliary heater 103 in the drawing is only a kind of illustration, and does not cause the limitation to its installation position.

[0052] The domestic hot water heat exchanger 104 includes first refrigerant inlet 1041, first refrigerant outlet 1042 communicated with the first refrigerant inlet 1041, first water inlet 1043 and first water outlet 1044 communicated with the first water inlet 1043.

[0053] The first water inlet 1043 and the first water outlet 1044 are connected with the domestic water tank 101 respectively, the first water pump 102 is connected between the domestic hot water heat exchanger 104 and the domestic water tank 101, and the first water pump 102 is used to provide power for the water circulation between the domestic hot water heat exchanger 104 and the domestic water tank 101.

[0054] The first refrigerant inlet 1041 is used for the refrigerant outlet pipe 201 of the cold and warm heat integrated outdoor main machine 20, the first refrigerant outlet 1042 is used for the refrigerant inlet pipe 202 of the cold and warm heat integrated outdoor main machine 20, and the domestic hot water heat exchanger 104 is used to exchange heat between the refrigerant from the outdoor main machine 20 and the water in the domestic water tank 101, and the domestic hot water is prepared.

[0055] The hot water module 10 disclosed in the embodiment is a separate module outside the outdoor main unit 20, so that the hot water module 10 can be selected according to the needs of different users, improving flexibility.

[0056] The domestic hot water heat exchanger 104 can be used to recover heat that is originally released into the air to produce domestic hot water in the cooling mode (i.e., the cooling and total heat recovery domestic hot water production mode and the cooling and partial heat recovery domestic hot water production mode), to produce domestic hot water in the heating mode (i.e., the heating and domestic hot water production mode), and to produce domestic hot water alone (i.e., the pure hot water mode). The electric auxiliary heater 103 can be used to assist the domestic hot water heat exchanger 104 in producing domestic hot water in the heating and domestic hot water production mode or the pure hot water mode.

[0057] For example, the electric auxiliary heater 103 is a PTC heating rod or a nano heating rod, and the domestic hot water heat exchanger 104 is a plate heat exchanger or a double-pipe heat exchanger. The PTC heating rod, the nano heating rod, the plate heat exchanger, and the double-pipe heat exchanger are only examples and are not intended to limit the present application. Other types can also be used.

[0058] In some embodiments, as shown in Figure 1 The domestic water tank 101 includes a first water outlet 1012 and a first water return port 1013. The first water outlet 1012 is connected to the first water inlet 1043 to form a water inlet pipeline, the first water outlet 1044 is connected to the first water return port 1013 to form a water outlet pipeline, and the first water pump 102 is arranged on the water inlet pipeline or the water outlet pipeline.

[0059] In some embodiments, as shown in Figure 1 The domestic water tank 101 further includes a cold water inlet 1011 for supplementing cold water and a hot water outlet 1014 for outputting hot water. The cold water inlet 1011 is connected to a cold water source such as a tap water pipe, and the hot water outlet 1014 is connected to a hot water using device.

[0060] In some embodiments, as shown in Figure 1 In order to provide hot water as soon as the hot water using device is turned on and improve user experience, the hot water module 10 further includes a second water pump 105. The inlet of the second water pump 105 is connected to a water pipe of the hot water using device, and the outlet of the second water pump 105 is connected to the cold water inlet 1011. The second water pump 105 is used as a zero-cold-water pump to draw the cooled water in the water pipe of the hot water using device back to the cold water inlet 1011.

[0061] In some embodiments, as shown in Figure 1As shown, the first backwater port 1013 and the hot water outlet 1014 are located above the domestic water tank 101, and the first water outlet 1012 and the cold water inlet 1011 are located below the domestic water tank 101.

[0062] In some embodiments, the hot water module 10 further comprises a hot water switch valve 106 connected between the first water outlet 1044 and the domestic water tank 101, i.e. connected on the water outlet pipeline. For example, the hot water switch valve 106 is a solenoid valve, which is only an example and does not limit the present application, and can also be other.

[0063] In some embodiments, in order to monitor the temperature in the domestic water tank 101 in real time, the hot water module 10 further comprises a temperature probe (not shown) arranged in the domestic water tank 101. For example, the temperature probe is a thermometer, which is only an example and does not limit the present application, and can also be other.

[0064] As shown in Figure 2 , Figure 3 and Figure 4 , some embodiments of the utility model also disclose a heat pump system, which comprises the hot water module 10 and the outdoor main machine 20 of any of the above embodiments.

[0065] Among them, the outdoor main machine 20 comprises the refrigerant outlet pipeline 201 and the refrigerant inlet pipeline 202, the refrigerant outlet pipeline 201 is connected with the first refrigerant inlet 1041, and the refrigerant inlet pipeline 202 is connected with the first refrigerant outlet 1042.

[0066] The hot water module 10 is arranged outside the outdoor main machine 20 in the embodiment, so that the weight of the outdoor main machine 20 can be reduced, and the user can select and match the hot water module 10 according to actual needs, and the hot water module 10 can be connected on the refrigerant outlet pipeline 201 and the refrigerant inlet pipeline 202.

[0067] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , when the user needs to configure or use the indoor machine 30, the heat pump system further comprises at least two indoor machines 30, air pipes 40 and liquid pipes 50, and it can be understood that the at least two indoor machines 30 can be two, three or any number. The indoor machine 30 is used to realize heat exchange between refrigerant and indoor air, and the indoor machine 30 comprises a first refrigerant port 301 and a second refrigerant port 302 in communication with the first refrigerant port 301. The outdoor main machine 20 further comprises a first refrigerant pipeline 203 and a second refrigerant pipeline 204.

[0068] The first refrigerant pipeline 203 is connected to the total interface end of the gas pipe 40. In each indoor unit 30, the first refrigerant port 301 is connected to the corresponding sub-interface end of the gas pipe 40, and the second refrigerant port 302 is connected to the corresponding sub-interface end of the liquid pipe 50. The second refrigerant pipeline 204 is connected to the total interface end of the liquid pipe 50.

[0069] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , when the user needs to configure or use the hydraulic module 60, the hydraulic module 60 can be connected to the liquid pipe 50 and the gas pipe 40, so the heat pump system further comprises at least one hydraulic module 60, and it is understood that at least one can be one, two, three or any number. The hydraulic module 60 comprises a heat exchanger 601, which is used to realize heat exchange between refrigerant and water in the external terminal 70, for example, the terminal 70 is a ground pipe, etc., which can realize the effect of ground cooling or floor heating.

[0070] The heat exchanger 601 comprises a third refrigerant port 6011, a fourth refrigerant port 6012 connected to the third refrigerant port 6011, a second water inlet 6013 and a second water outlet 6014 connected to the second water inlet 6013.

[0071] The third refrigerant port 6011 is connected to the corresponding sub-interface end of the gas pipe 40, and the fourth refrigerant port 6012 is connected to the corresponding sub-interface end of the liquid pipe 50. The second water inlet 6013 and the second water outlet 6014 are used to externally connect the terminal 70.

[0072] The terminal 70 comprises a second water outlet 701 and a second water return port 702, the second water outlet 701 is connected to the second water inlet 6013, and the second water outlet 6014 is connected to the second water return port 702.

[0073] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , the hydraulic module 60 further comprises a third water pump 602, which is arranged on the pipeline of the second water inlet 6013 (i.e. the pipeline connecting the second water outlet 701 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 702), and the third water pump 602 is used to provide power for water circulation between the heat exchanger 601 and the external terminal 70.

[0074] For example, the heat exchanger 601 is a plate heat exchanger, and the tube heat exchanger is merely an example and is not intended to limit the present application, and other heat exchangers can also be used.

[0075] In some embodiments, the hydraulic module 60 further comprises a fifth throttling device 603, and the fourth refrigerant port 6012 is connected to the corresponding tapping end in the liquid pipe 50 through the fifth throttling device 603.

[0076] In the present embodiment, the hydraulic module 60 is arranged outside the outdoor main unit 20, which can reduce the weight of the outdoor main unit 20, and the user can also select the hydraulic module 60 according to actual needs.

[0077] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , the outdoor main unit 20 further comprises a first on-off valve 205, a second on-off valve 206, a third on-off valve 207, and a fourth on-off valve 208. The first on-off valve 205 is arranged on the first refrigerant pipeline 203, the second on-off valve 206 is arranged on the second refrigerant pipeline 204, the third on-off valve 207 is arranged on the refrigerant outlet pipeline 201, and the fourth on-off valve 208 is arranged on the refrigerant inlet pipeline 202. For example, the first on-off valve 205, the second on-off valve 206, the third on-off valve 207, and the fourth on-off valve 208 are each a stop valve, and the stop valve is merely an example and is not intended to limit the present application, and other valves can also be used.

[0078] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , 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:

[0079] The compressor 209 is used to compress refrigerant. The high-pressure gas-liquid separator 210 comprises 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 is used to output gaseous refrigerant after gas-liquid separation, and the third refrigerant outlet 2103 is used to output liquid refrigerant after gas-liquid separation. The outdoor-side heat exchanger 211 is used to realize heat exchange between refrigerant and external air, and the outdoor-side heat exchanger 211 comprises a fifth refrigerant port 2111 and a sixth refrigerant port 2112 in communication with the fifth refrigerant port 2111.

[0080] The compressor 209's outlet is connected to the refrigerant outlet pipe 201. The second refrigerant inlet 2101 is connected to the refrigerant inlet pipe 202. The second refrigerant outlet 2102 is connected to the first refrigerant pipe 203 and the fifth refrigerant port 2111. The third refrigerant outlet 2103 is connected to the second refrigerant pipe 204 and the sixth refrigerant port 2112 via the first throttling device 212. The second refrigerant pipe 204 is connected to the sixth refrigerant port 2112. The fifth refrigerant port 2111 and the first refrigerant pipe 203 are connected to the compressor 209's inlet.

[0081] 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 mentioned here are merely examples and are not intended to limit this application.

[0082] In this embodiment, a high-pressure gas-liquid separator 210 is installed at the outlet end of the refrigerant inlet pipe 202. By using gas-liquid separation, the refrigerant flow direction can be automatically realized when switching between the refrigeration and total heat recovery domestic hot water production mode and the refrigeration and partial heat recovery domestic hot water production mode, as well as when switching between the heating and domestic hot water production mode and the pure hot water mode, thereby improving the stability of the system.

[0083] In some embodiments, such as Figure 2 As shown, when the heat pump system is equipped with the hot water module 10, in the cooling and total heat recovery domestic hot water mode, the refrigerant comes out from the outlet of the compressor 209 and forms a cooling refrigerant circuit through the refrigerant outlet pipe 201, the first refrigerant inlet 1041, the first refrigerant outlet 1042, the second refrigerant inlet 2101, the third refrigerant outlet 2103, the first throttling device 212, the second refrigerant pipe 204, the liquid pipe 50, the second refrigerant port 302, the first refrigerant port 301, the gas pipe 40, the first refrigerant pipe 203 and the inlet of the compressor 209. At the same time, all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 104.

[0084] When the heat pump system is also equipped with the hydraulic module 60, in the cooling and total heat recovery domestic hot water mode, the refrigerant, after exiting the liquid pipe 50, returns to the gas pipe 40 via the fifth throttling device 603, the fourth refrigerant port 6012, and the third refrigerant port 6011. The refrigerant exchanges heat with the water in the external terminal 70 at the heat exchanger 601, for example, to achieve a floor cooling effect. It should be noted that in the cooling and total heat recovery domestic hot water mode, the indoor unit 30 and the hydraulic module 60 can operate selectively or simultaneously.

[0085] In some embodiments, such as Figure 3 As shown, when the heat pump system is equipped with the hot water module 10, in the cooling and partial heat recovery domestic hot water mode, the refrigerant exits from the outlet of the compressor 209 and forms a cooling refrigerant circuit through the refrigerant outlet pipe 201, the first refrigerant inlet 1041, the first refrigerant outlet 1042, the second refrigerant inlet 2101, the second refrigerant outlet 2102, the fifth refrigerant port 2111, the sixth refrigerant port 2112, the second refrigerant pipe 204, the liquid pipe 50, the second refrigerant port 302, the first refrigerant port 301, the gas pipe 40, the first refrigerant pipe 203, and the inlet of the compressor 209. At the same time, part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 104.

[0086] When the heat pump system is also equipped with the hydraulic module 60, in the cooling and partial heat recovery domestic hot water production mode, the refrigerant, after exiting the liquid pipe 50, returns to the gas pipe 40 via the fifth throttling device 603, the fourth refrigerant port 6012, and the third refrigerant port 6011. The refrigerant exchanges heat with the water in the external terminal 70 at the heat exchanger 601, for example, achieving a floor cooling effect. In the cooling and partial heat recovery domestic hot water production mode, the indoor unit 30 and the hydraulic module 60 can operate selectively or simultaneously.

[0087] In some embodiments, such as Figure 4 As shown, when the heat pump system is equipped with the hot water module 10, in the heating and domestic hot water mode, the refrigerant exits from the outlet of the compressor 209 and forms a heating refrigerant circuit through the refrigerant outlet pipe 201, the first refrigerant inlet 1041, the first refrigerant outlet 1042, the second refrigerant inlet 2101, the second refrigerant outlet 2102, the first refrigerant pipe 203, the gas pipe 40, the first refrigerant port 301, the second refrigerant port 302, the liquid pipe 50, the second refrigerant pipe 202, the sixth refrigerant port 2112, the fifth refrigerant port 2111, and the inlet of the compressor 209. At the same time, part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 104.

[0088] When the heat pump system is also equipped with the hydraulic module 60, in the heating and domestic hot water mode, the refrigerant exits from the gas pipe 40 and returns to the liquid pipe 50 via the third refrigerant port 6011, the fourth refrigerant port 6012, and the fifth throttling device 603. The refrigerant exchanges heat with the water in the external terminal 70 at the heat exchanger 601, for example, to achieve the effect of underfloor heating. It should be noted that in the heating and domestic hot water mode, the indoor unit 30 and the hydraulic module 60 can operate selectively or simultaneously.

[0089] In some embodiments, such as Figure 5 As shown, when the heat pump system is equipped with the hot water module 10, in pure hot water mode, after the refrigerant comes out from the outlet of the compressor 209, it forms a pure hot water refrigerant circuit through the refrigerant outlet pipe 201, the first refrigerant inlet 1041, the first refrigerant outlet 1042, the second refrigerant inlet 2101, the third refrigerant outlet 2103, the first throttling device 212, the sixth refrigerant port 2112, the fifth refrigerant port 2111 and the inlet of the compressor 209. At the same time, all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 104.

[0090] In some embodiments, such as Figure 6 As shown, when the heat pump system is equipped with the hydraulic module 60, in cooling mode, the refrigerant exits from the compressor 209 and flows through the fifth refrigerant port 2111, the sixth refrigerant port 2112, the second refrigerant line 204, the liquid line 50, the second refrigerant port 302, the first refrigerant port 301, the gas line 40, the first refrigerant line 203, and the compressor 209 inlet to form a refrigerant circuit for cooling. Furthermore, the refrigerant also exits from the liquid line 50 and flows through the fifth throttling device 603, the fourth refrigerant port 6012, and the third refrigerant port 6011 back to the gas line 40. The refrigerant exchanges heat with the water in the external terminal 70 at the heat exchanger 601, for example, achieving a floor cooling effect. In cooling mode, the indoor unit 30 and the hydraulic module 60 can operate selectively or simultaneously.

[0091] In some embodiments, such as Figure 8As shown, when the heat pump system is configured with the hydraulic module 60, in the heating mode, the refrigerant from the outlet of the compressor 209 forms a refrigerant circuit for heating through the first refrigerant pipeline 203, the gas pipe 40, the first refrigerant port 301, the second refrigerant port 302, the liquid pipe 50, the second refrigerant pipeline 204, the fifth refrigerant port 2111, the sixth refrigerant port 2112, and the inlet of the compressor 209. In addition, the refrigerant from the gas pipe 40 also returns to the liquid pipe 50 through the third refrigerant port 6011, the fourth refrigerant port 6012, and the fifth throttling device 603, and the refrigerant exchanges heat with the water in the terminal 70 outside to achieve the effect of floor heating. It should be noted that in the heating mode, the indoor unit 30 and the hydraulic module 60 can be operated alternatively or simultaneously.

[0092] It should be noted that the total heat exchange in the domestic hot water heat exchanger 104 means that all the refrigerant after heat exchange in the domestic hot water heat exchanger 104 forms liquid refrigerant, and the partial heat exchange in the domestic hot water heat exchanger 104 means that part of the refrigerant after heat exchange in the domestic hot water heat exchanger 104 forms gaseous refrigerant.

[0093] In some embodiments, as shown in Figure 10 and Figure 11 As shown, the outdoor main unit 20 further comprises a fifth switch valve 213 and a first reversing valve 214. The fifth switch valve 213 is used to control the amount of refrigerant flowing to the refrigerant outlet pipeline 201. The first reversing valve 214 is used to switch the total heat or partial heat of the refrigerant to exchange in the hot water module 10 when the hot water module 10 is connected externally.

[0094] The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 201 through the fifth switch valve 213, and the outlet of the compressor 209 is connected to the first refrigerant pipeline 203 and the fifth refrigerant port 2111 through the first reversing valve 214. The second refrigerant outlet 2102 is connected to the first refrigerant pipeline 203 and the fifth refrigerant port 2111 through the first reversing valve 214.

[0095] The first reversing valve 214 comprises 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 203 and the fifth refrigerant port 2111, and the third valve port 2143 is connected to the outlet of the compressor 209.

[0096] When the fifth switching valve 213 is opened, the outlet of the compressor 209 is connected to the refrigerant outlet pipeline 201.

[0097] 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 203 or the fifth refrigerant port 2111.

[0098] 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 203 or the fifth refrigerant port 2111.

[0099] In other embodiments, such as Figure 12 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 hot water module 10 when the hot water module 10 is connected. The first reversing valve 214 is used to regulate the amount of refrigerant flowing to the refrigerant outlet pipe 201.

[0100] The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 201 via the first reversing valve 214, and the outlet of the compressor 209 is also connected to the first refrigerant pipeline 203 and the fifth refrigerant port 2111 via the first reversing valve 214. The second refrigerant outlet 2102 is connected to the first refrigerant pipeline 203 and the fifth refrigerant port 2111 via the fifth switching valve 213.

[0101] 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 201, and the third valve port 2143 is connected to the first refrigerant pipeline 203 and the fifth refrigerant port 2111.

[0102] 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 201.

[0103] 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 203 or the fifth refrigerant port 2111.

[0104] When the fifth switching valve 213 is opened, the second refrigerant outlet 2102 is connected to the first refrigerant pipeline 203 or the fifth refrigerant port 2111.

[0105] In some embodiments, as shown in FIG. 1, 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

[0106] The first end of the economizer module is connected to the second refrigerant pipeline 204, 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.

[0107] In other embodiments, as shown in FIG. 2, 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 204, and the third refrigerant outlet 2103 is connected to the second refrigerant pipeline 204 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 3 Figure 4

[0108] 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.

[0109] 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).

[0110] ​​​The embodiment adds the economizer module at the outlet of the indoor unit 30, so that the refrigerant from the indoor unit 30 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.

[0111] In some embodiments, as shown in Figure 3 , Figure 2 and Figure 4 , 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, and the second reversing valve 218 is connected to the first refrigerant path 203, the fifth refrigerant port 2111 and the inlet of the compressor 209.

[0112] 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 203. 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.

[0113] 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.

[0114] When the fourth valve port 2181 and the seventh valve port 2184 are connected, the first refrigerant path 203 is connected to the outlet of the compressor 209 and / or the second refrigerant outlet 2102.

[0115] 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.

[0116] When the seventh valve port 2184 and the sixth valve port 2183 are connected, the first refrigerant path 203 is connected to the inlet of the compressor 209.

[0117] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , 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.

[0118] In this embodiment, the third throttling device 219 can further reduce the temperature of the refrigerant entering the outdoor heat exchanger 211.

[0119] 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.

[0120] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , 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.

[0121] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4 , 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.

[0122] In some embodiments, as shown in Figure 2 , Figure 3 and Figure 4As shown, the heat pump system further comprises a fourth throttling device 80 arranged corresponding to each indoor unit 30, and the second refrigerant port 302 is connected with the corresponding tapping end of the liquid pipe 50 through the fourth throttling device 80. For example, the fourth throttling device 80 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.

[0123] In some embodiments, the indoor unit 30 is a ducted or ceiling type air conditioner, which comprises an indoor-side heat exchanger (such as a finned heat exchanger) and a fan.

[0124] In some embodiments, the heat pump system further comprises a fresh air module arranged corresponding to each indoor unit 30, which is used to introduce fresh outdoor air and discharge indoor dirty air.

[0125] In some embodiments, as shown in FIG. 1, the connection relationship between the components in the indoor main unit is as follows: Figure 2

[0126] ​The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 201 through the fifth switch valve 213, and the third switch valve 207 is arranged on the refrigerant outlet pipeline 201. The outlet of the compressor 209 is also connected to the third valve port 2143 of the first reversing valve 214. The refrigerant inlet pipeline 202 is connected to 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 202. 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 204 is provided with the second switch valve 206, and the first interface 2171 of the liquid storage container 217 is connected to the second refrigerant pipeline 204. 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 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 through 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 203, and the first switch valve 205 is arranged on the first refrigerant pipeline 203. The second interface 2172 of the liquid storage container 217 is connected to 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 to 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 to 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 to 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 directed to 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 through the low-pressure gas-liquid separator 221.

[0127] In some embodiments, as shown in FIG. 1, the connection relationship between the components in the indoor main unit is as follows: Figure 3

[0128] ​The outlet of the compressor 209 is connected to the refrigerant outlet pipeline 201 through the fifth switch valve 213, and the third switch valve 207 is arranged on the refrigerant outlet pipeline 201. The outlet of the compressor 209 is connected to the third valve port 2143 of the first reversing valve 214. The refrigerant inlet pipeline 202 is connected to 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 202. 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 valve port 2183 of the second reversing valve 218 is connected to 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 to the first refrigerant pipeline 203, and the first switch valve 205 is arranged on the first refrigerant pipeline 203. The second switch valve 206 is arranged on the second refrigerant pipeline 204, and one end of the second refrigerant pipeline 204 is connected to the seventh refrigerant port 2151 of the economizer 215. The other end of the second refrigerant pipeline 204 is connected to the eighth refrigerant port 2152 of the economizer 215 through 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 through 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 through the one-way valve 220, and the one-way valve 220 is in the direction of the ninth refrigerant port 2153 of the economizer 215. The ninth refrigerant port 2153 of the economizer 215 is connected to the third refrigerant outlet 2103 through the first throttling device 212. The tenth refrigerant port 2154 of the economizer 215 is connected to the inlet of the compressor 209 through the low-pressure gas-liquid separator 221. The difference between FIG. 1 and FIG. 2 is that the liquid storage container 217 is added in FIG. 2.

[0129] In some embodiments, as shown in FIG. 1 and FIG. 2, the connection relationship between the components in the indoor main unit is as follows: Figure 4

[0130] ​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 201, 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 202 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 202. 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 204 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 204. 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 203, and the first refrigerant pipeline 203 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 direction of being conducted to 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. The difference between the figure and the figure is that the positions of the first reversing valve 214 and the fifth switch valve 213 are interchanged.

[0131] In different cases, the heat pump system corresponds to different valve port connections, and the refrigerant flow directions of each mode will be described below with reference to the heat pump system shown in Figure 2 The refrigerant flow directions of each mode are as follows.

[0132] As Figure 5As shown, in the refrigeration and total heat recovery hot water mode, the first throttling device 212, the fourth throttling device 80, 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 10 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 1041 of the hot water heat exchanger 104 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 101 in the hot water heat exchanger 104, and becomes medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the first refrigerant outlet 1042 of the hot water heat exchanger 104 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is carried out 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 50 through the second switch valve 206, and the medium-temperature liquid refrigerant enters the fourth throttling device 80 in the liquid pipe 50, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fourth throttling device 80, and then enters the second refrigerant port 302 of the indoor unit 30, and the low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 30, and the low-temperature liquid refrigerant evaporates into low-temperature gaseous refrigerant after absorbing heat from the indoor air, the indoor unit 30 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 301 of the indoor unit 30 enters the gas pipe 40. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 603 in the liquid pipe 50, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fifth throttling device 603, 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 70 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 70 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 40. The low-temperature gaseous refrigerant output from the gas pipe 40 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 10, so that the outdoor side heat exchanger 211 originally used for heat exchange with air during refrigeration is recycled to avoid heat waste in the outdoor side heat exchanger 211 and air heat exchange, the recycled heat is exchanged with the water in the domestic water tank 101 in the domestic hot water heat exchanger 104, 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.

[0133] When the domestic hot water reaches a certain temperature, it can be switched to a refrigeration and partial heat recovery domestic hot water mode, such as Figure 6As shown, in the refrigeration and partial heat recovery hot water mode, the fourth throttling device 80, 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 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 hot water module 10 and the hydraulic module 60 are configured. That is, when hot water needs to be prepared in the refrigeration mode, the high-temperature gaseous refrigerant output from the outlet of the compressor 209 enters the first refrigerant inlet 1041 of the hot water heat exchanger 104 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 101 in the hot water heat exchanger 104 to become medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the first refrigerant outlet 1042 of the hot water heat exchanger 104 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 the medium-temperature gaseous refrigerant 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 50 through the second switch valve 206. The medium-temperature liquid refrigerant in the liquid pipe 50 enters the fourth throttling device 80, becomes low-temperature liquid refrigerant after throttling and cooling by the fourth throttling device 80, and then enters the second refrigerant port 302 of the indoor unit 30. The low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 30, and the low-temperature liquid refrigerant absorbs heat from the indoor air to evaporate into low-temperature gaseous refrigerant. The indoor unit 30 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 301 of the indoor unit 30 enters the gas pipe 40.And, the medium temperature liquid refrigerant enters the fifth throttling device 603 in the liquid pipe 50, becomes low temperature liquid refrigerant with lower temperature after throttling and cooling by the fifth throttling device 603, 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 70 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 70 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 40. The low temperature gaseous refrigerant output by the gas pipe 40 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 10, at least part of the condensation heat of the outdoor side heat exchanger 211 originally used for heat exchange with air is recycled when cooling in summer, and at least part of the heat is avoided from being wasted by heat exchange between the outdoor side heat exchanger 211 and air, and the recycled heat is exchanged with the water in the water tank 101 in the hot water heat exchanger 104 to prepare hot water, and the energy utilization rate is improved. And by configuring the water module 60, the effect of ground cooling and the like can be realized when cooling, and the energy utilization rate is improved.

[0134] Specifically, Figure 6 And Figure 5 The difference between the embodiments shown in the drawings is that, Figure 6 In order to recycle at least part of the condensation heat of the outdoor side heat exchanger 211 originally used for heat exchange with air, and Figure 5 In order to recycle all of the condensation heat of the outdoor side heat exchanger 211 originally used for heat exchange with air.

[0135] As Figure 7As shown, in the refrigeration and partial heat recovery hot water mode, the fourth throttling device 80, 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 communicated with the first valve port 2141 and the third valve port 2143, 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 hot water module 10 and the hydraulic module 60 are configured. That is, when hot water needs to be prepared in the refrigeration mode, the high-temperature gaseous refrigerant output at the outlet of the compressor 209 enters the first refrigerant inlet 1041 of the hot water heat exchanger 104 through the fifth switch valve 213 and the third switch valve 207, and the high-temperature gaseous refrigerant output at 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 104 exchanges heat with the water in the water tank 101, becomes medium-temperature gaseous refrigerant after preparing hot water, and the medium-temperature gaseous refrigerant output at the first refrigerant outlet 1042 of the hot water heat exchanger 104 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is carried out in the high-pressure gas-liquid separator 210 to ensure that the refrigerant output at the second refrigerant outlet 2102 is pure gas. The medium-temperature gaseous refrigerant output at 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 by 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 by the first interface 2171 of the liquid storage container 217 enters the liquid pipe 50 through the second switch valve 206, enters the fourth throttling device 80 in the liquid pipe 50, becomes low-temperature liquid refrigerant after throttling and temperature reduction, then enters the second refrigerant port 302 of the indoor unit 30, exchanges heat with indoor air in the indoor unit 30, evaporates into low-temperature gaseous refrigerant after absorbing heat from the indoor air, the indoor unit 30 blows out cold air, and the low-temperature gaseous refrigerant outputted by the first refrigerant port 301 of the indoor unit 30 enters the gas pipe 40. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 603 in the liquid pipe 50, becomes low-temperature liquid refrigerant after throttling and temperature reduction, then enters the fourth refrigerant port 6012 of the heat exchanger 601, exchanges heat with water in the external terminal 70 in the heat exchanger 601, evaporates into low-temperature gaseous refrigerant after absorbing heat from the water, the water in the external terminal 70 becomes cold water, and the low-temperature gaseous refrigerant outputted by the third refrigerant port 6011 of the heat exchanger 601 enters the gas pipe 40. The low-temperature gaseous refrigerant outputted by the gas pipe 40 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.

[0136] Specifically, Figure 7 and Figure 6 The difference between the embodiment shown in the figure and the embodiment shown in the figure is that, Figure 7 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 104, 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.

[0137] 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 80, 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 communicated with the second valve port 2142, 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 hot water module 10 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 1041 of the hot water heat exchanger 104 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 101 in the hot water heat exchanger 104 to become medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the first refrigerant outlet 1042 of the hot water heat exchanger 104 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 40 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 301 of the indoor unit 30 in the gas pipe 40. The medium-temperature gaseous refrigerant exchanges heat with indoor air in the indoor unit 30, and the medium-temperature gaseous refrigerant condenses into medium-temperature liquid refrigerant after releasing heat to the indoor air. The indoor unit 30 blows hot air, and the medium-temperature liquid refrigerant output from the second refrigerant port 302 of the indoor unit 30 becomes low-temperature liquid refrigerant after throttling and cooling by the fourth throttling device 80, and then the low-temperature liquid refrigerant output from the fourth throttling device 80 enters the liquid pipe 50. 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 40, and the medium-temperature gaseous refrigerant exchanges heat with water in the terminal 70 outside 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 becomes low-temperature liquid refrigerant after throttling and cooling by the fifth throttling device 603, and then the low-temperature liquid refrigerant output from the fifth throttling device 603 enters the liquid pipe 50.The low-temperature liquid refrigerant output by the liquid pipe 50 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 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 10 and the hydraulic module 60, heating can be performed while hot water is prepared, and the effects of floor heating and the like can be achieved, thereby improving energy utilization.

[0138] As Figure 9As shown, in the heating and hot water mode, the second throttling device 216, the third throttling device 219, the fourth throttling device 80, the first switch valve 205, the second switch valve 206, the third switch valve 207, the fourth switch valve 208, the fifth switch valve 213, 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 10 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 1041 of the hot water heat exchanger 104 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 40 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 104 exchanges heat with the water in the water tank 101, becomes medium-temperature gaseous refrigerant after preparing hot water, and the medium-temperature gaseous refrigerant output from the first refrigerant outlet 1042 of the hot water heat exchanger 104 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is carried out 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 40 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 40 enters the first refrigerant port 301 of the indoor unit 30, the medium-temperature gaseous refrigerant in the indoor unit 30 exchanges heat with indoor air, and the medium-temperature gaseous refrigerant releases heat to the indoor air and condenses into medium-temperature liquid refrigerant, the indoor unit 30 blows hot air, and the medium-temperature liquid refrigerant output from the second refrigerant port 302 of the indoor unit 30 is throttled to low-temperature liquid refrigerant by the fourth throttling device 80, and then the low-temperature liquid refrigerant output from the fourth throttling device 80 enters the liquid pipe 50.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 40, and becomes medium-temperature liquid refrigerant after heat exchange with water in the external terminal 70 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 603, and then the low-temperature liquid refrigerant output by the fifth throttling device 603 enters the liquid pipe 50. The low-temperature liquid refrigerant output by the liquid pipe 50 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.

[0139] Specifically, Figure 9 And Figure 8 The difference between the embodiment shown in the figure and the embodiment shown in the figure is that Figure 9 In the embodiment shown in the figure, the first valve port 2141 and the second valve port 2142 of the first switch valve 214, the fourth valve port 2181 and the seventh valve port 2184 of the second switch valve 218, and the first switch valve 205 enter the gas pipe 40, which can better control the amount of refrigerant entering the domestic hot water heat exchanger 104, 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.

[0140] As Figure 10As 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 hot water module 10 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 1041 of the domestic hot water heat exchanger 104 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 101 in the domestic hot water heat exchanger 104, and becomes medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the first refrigerant outlet 1042 of the domestic hot water heat exchanger 104 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 first interface 2171 of the liquid storage container 217, and 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 is throttled and cooled by the second throttling device 216 to become low-temperature liquid refrigerant with lower temperature, and the low-temperature liquid refrigerant with lower temperature 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 lower temperature after heat exchange, and then enters the third throttling device 219 for throttling and cooling, and becomes low-temperature liquid refrigerant with 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.

[0141] As Figure 11As shown, in the refrigeration mode, the fourth throttling device 80, 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 50 through the second switch valve 206, and the medium-temperature liquid refrigerant enters the fourth throttling device 80 in the liquid pipe 50 and becomes low-temperature liquid refrigerant after throttling and temperature reduction, and then enters the second refrigerant port 302 of the indoor unit 30, the low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 30, and the low-temperature liquid refrigerant absorbs heat from the indoor air and evaporates to become low-temperature gaseous refrigerant, the indoor unit 30 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 301 of the indoor unit 30 enters the gas pipe 40. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 603 in the liquid pipe 50, 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 70 in the heat exchanger 601, and the low-temperature liquid refrigerant absorbs heat from the water and evaporates to become low-temperature gaseous refrigerant, and the water in the external terminal 70 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 40. The low-temperature gaseous refrigerant output from the gas pipe 40 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.

[0142] As Figure 12As shown, in the heating mode, the second throttling device 216, the third throttling device 219, the fourth throttling device 80, 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 40 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 301 of the indoor unit 30 in the gas pipe 40, and the medium-temperature gaseous refrigerant exchanges heat with indoor air in the indoor unit 30. After the medium-temperature gaseous refrigerant releases heat to the indoor air, it condenses into medium-temperature liquid refrigerant. The indoor unit 30 blows hot air, and the second refrigerant port 302 of the indoor unit 30 outputs medium-temperature liquid refrigerant which is cooled by the fourth throttling device 80 to become low-temperature liquid refrigerant, and then the low-temperature liquid refrigerant output by the fourth throttling device 80 enters the liquid pipe 50. 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 40, and the medium-temperature gaseous refrigerant exchanges heat with water in the external terminal 70 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 603 to become low-temperature liquid refrigerant, and then the low-temperature liquid refrigerant output by the fifth throttling device 603 enters the liquid pipe 50.The low-temperature liquid refrigerant output by the liquid pipe 50 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 still 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 switch valve 218 and the low-pressure gas-liquid separator 221, and reciprocally circulates. By configuring the hydraulic module 60, heating can be realized at the same time to achieve the effect of floor heating and improve energy utilization.

[0143] 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.

[0144] In different cases, Figure 3 The heat pump system shown also corresponds to different valve port connections and different operating modes, wherein the refrigeration and partial heat recovery mode, the heating and hot water mode, the refrigeration mode and the heating mode are the same as Figure 2 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 3 The refrigeration and full heat recovery hot water mode and the hot water mode of the heat pump system shown in FIG. 2 are as follows:

[0145] As Figure 13As shown, in the refrigeration and total heat recovery hot water mode, the first throttling device 212, the fourth throttling device 80, 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 10 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 1041 of the hot water heat exchanger 104 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 101 in the hot water heat exchanger 104, and becomes medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the first refrigerant outlet 1042 of the hot water heat exchanger 104 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 50 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 80 in the liquid pipe 50, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fourth throttling device 80, and then enters the second refrigerant port 302 of the indoor unit 30, the low-temperature liquid refrigerant exchanges heat with indoor air in the indoor unit 30, and the low-temperature liquid refrigerant absorbs heat from the indoor air to evaporate into low-temperature gaseous refrigerant, the indoor unit 30 blows cold air, and the low-temperature gaseous refrigerant output from the first refrigerant port 301 of the indoor unit 30 enters the gas pipe 40. Moreover, the medium-temperature liquid refrigerant enters the fifth throttling device 603 in the liquid pipe 50, becomes low-temperature liquid refrigerant with lower temperature after throttling and cooling by the fifth throttling device 603, 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 70 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 70 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 40. The low-temperature gaseous refrigerant output from the gas pipe 40 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.

[0146] As Figure 14 shown, in the pure hot water mode, the first throttling device 212, 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 hot water module 10 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 1041 of the domestic hot water heat exchanger 104 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 101 in the domestic hot water heat exchanger 104, and becomes medium-temperature liquid refrigerant after preparing hot water. The medium-temperature liquid refrigerant output from the first refrigerant outlet 1042 of the domestic hot water heat exchanger 104 enters the second refrigerant inlet 2101 of the high-pressure gas-liquid separator 210, and further gas-liquid separation is carried out 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 after being throttled and cooled by the first throttling device 212, and then becomes low-temperature liquid refrigerant with a lower temperature after being further throttled and cooled by the third throttling device 219. The low-temperature liquid refrigerant output from the third throttling device 219 enters the sixth refrigerant port 2112 of the outdoor heat exchanger 211, and the low-temperature liquid refrigerant becomes low-temperature gaseous refrigerant after evaporating and absorbing heat in the outdoor heat exchanger 211. 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 and then returns to the inlet of the compressor 209, and reciprocatingly circulates.

[0147] In different cases, Figure 4 the heat pump system shown will also correspond to different valve port connections, and the refrigerant flow directions of various modes are all the same as those shown in Figure 2 the heat pump system, only the on-off of the fifth on-off valve 213 and the conduction of the first reversing valve 214 are different, and other details are not repeated. Specifically:

[0148] In the refrigeration and full heat recovery domestic hot water preparation mode and the pure hot water mode, the first valve port 2141 of the first reversing valve 214 is connected with the second valve port 2142.

[0149] In the refrigeration and partial heat recovery hot water production mode and the heating and hot water production mode, the first valve port 2141 of the first reversing valve 214 is communicated with the second valve port 2142, or the first valve port 2141 of the first reversing valve 214 is communicated with the second valve port 2142 and the third valve port 2143, and the fifth switch valve 213 is opened.

[0150] In the refrigeration and heating mode, the first valve port 2141 of the first reversing valve 214 is communicated with the third valve port 2143.

[0151] By implementing the utility model, the following beneficial effects are achieved:

[0152] The hot water module 10 is modularized, can be a separate module outside the outdoor main machine 20, and therefore can be selected according to the requirements of different users, thereby improving flexibility.

[0153] It can be understood that the above embodiments only express some implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as a limitation on the patent range of the utility model. It should be pointed out 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 deformations and improvements can be made, which all belong to the protection range of the utility model, that is, the embodiments described in some embodiments can be freely combined with any of the above and below embodiments. Therefore, any equivalent transformation and modification within the scope of the claims of the utility model should belong to the coverage range of the claims of the utility model.

Claims

1. A hot water module, characterized in that, The hot water module comprises: a domestic water tank and a first water pump; an electric auxiliary heater arranged in the domestic water tank; and 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; wherein the first water inlet and the first water outlet are connected to the domestic water tank respectively, the first water pump is connected between the domestic hot water heat exchanger and the domestic water tank, and the first water pump is configured to provide power for water circulation between the domestic hot water heat exchanger and the domestic water tank; the first refrigerant inlet is configured to be connected to a refrigerant outlet pipeline of an outdoor main unit of a cold, warm and hot integrated air conditioner, the first refrigerant outlet is configured to be connected to a refrigerant inlet pipeline of the outdoor main unit of the cold, warm and hot integrated air conditioner, and the domestic hot water heat exchanger is configured to exchange heat between the refrigerant from the outdoor main unit and water in the domestic water tank to produce domestic hot water.

2. The hot water module of claim 1, wherein, The domestic water tank comprises a first water outlet and a first water return inlet. The first water outlet and the first water return inlet are connected to form a water inlet pipeline and a water outlet pipeline respectively, and the first water pump is arranged on the water inlet pipeline or the water outlet pipeline.

3. The hot water module of claim 2, wherein, The domestic water tank further comprises a cold water inlet for supplementing cold water and a hot water outlet for outputting hot water.

4. The hot water module of claim 3, wherein, The hot water module further comprises: a second water pump, an inlet of the second water pump being configured to be connected to a water using device of the hot water module, and an outlet of the second water pump being connected to the cold water inlet.

5. The hot water module of claim 3, wherein, The first water return inlet and the hot water outlet are located above the domestic water tank, and the first water outlet and the cold water inlet are located below the domestic water tank.

6. The hot water module of claim 1, wherein, The hot water module further comprises: a hot water switch valve connected between the first water outlet and the domestic water tank.

7. The hot water module of claim 1, wherein, The hot water module further comprises: a temperature detector arranged in the domestic water tank.

8. The hot water module of claim 1, wherein, The domestic hot water heat exchanger is a plate heat exchanger or a double-pipe heat exchanger.

9. A heat pump system, characterized by The hot water module and the outdoor main unit of any one of claims 1-8 are provided. The outdoor main unit comprises the refrigerant outlet pipeline and the refrigerant inlet pipeline, the refrigerant outlet pipeline is connected to the first refrigerant inlet, and the refrigerant inlet pipeline is connected to the first refrigerant outlet. The heat pump system further comprises at least two indoor units, a gas pipeline and a liquid pipeline; each indoor unit comprises a first refrigerant port and a second refrigerant port in communication with the first refrigerant port; 10. The heat pump system of claim 9, wherein, The outdoor main unit further comprises a first refrigerant pipeline and a second refrigerant pipeline; The first refrigerant pipeline is connected to a total interface end of the gas pipeline; In each indoor unit, the first refrigerant port is connected to a corresponding branch interface end of the gas pipeline, and the second refrigerant port is connected to a corresponding branch interface end of the liquid pipeline; The second refrigerant pipeline is connected to a total interface end of the liquid pipeline. ​

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