Indoor unit and heat pump system

Abstract

The utility model relates to an indoor unit and a heat pump system. The indoor unit is used for the heat pump system and comprises at least two water tanks; the reversing valve is provided with an inlet and at least two outlets, the inlet is used for being communicated with an outdoor unit of the heat pump system, and the outlets are communicated with the water tanks one to one; and the controller is in communication connection with the reversing valve and is configured to control the reversing valve so as to connect or disconnect a water path between the outdoor unit and any water tank. According to the indoor unit, the water tanks are communicated with the different external devices, heat supply of the heat pump system to the multiple external devices is achieved, different hot water / heat requirements are met, the indoor unit is provided with the reversing valve, pipeline connection between the water tanks can be achieved in the product assembling process, and the production efficiency is improved. The steps that a user prepares accessories and connects pipelines on an installation site are omitted, the difficulty of on-site installation is reduced, the pipelines assembled in advance are more beneficial to reducing the risk of leakage, and the yield of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to an indoor unit and a heat pump system. Background Technology

[0002] Currently, water heaters are common household appliances, categorized into electric water heaters, solar water heaters, and heat pump water heaters. Among them, heat pump water heaters use air, water, and / or solar energy as low-temperature heat sources, powered by electricity to extract heat from the low-temperature side to heat domestic water. They are characterized by high efficiency, energy saving, and environmental friendliness, and are increasingly widely used in modern life.

[0003] When heat pump water heaters are installed on-site, various external accessories such as three-way valves are required to complete the water circuit connection, making the installation work cumbersome and time-consuming. Utility Model Content

[0004] Therefore, it is necessary to provide an indoor unit to address the inconvenience of installing heat pump water heaters.

[0005] This utility model provides an indoor unit for a heat pump system, comprising: at least two water tanks; a reversing valve having an inlet and at least two outlets, the inlet being connected to the outdoor unit of the heat pump system, and the outlets being connected one-to-one with the water tanks; and a controller communicatively connected to the reversing valve and configured to control the reversing valve to open or close the water path between the outdoor unit and any one of the water tanks.

[0006] The indoor unit provided by this utility model is equipped with at least two water tanks. Compared with the existing single water tank, by connecting the water tanks to different external devices, the heat pump system can supply heat to multiple external devices, meeting different hot water / heating needs, such as the hot water needs of domestic sinks and washbasins, and the heating needs of heating equipment. This enriches the functions of the heat pump system and realizes the efficient utilization of the system. The outlet of the reversing valve is connected to the water tank one-to-one, and the controller controls the reversing valve to switch, so that the water circuit between the outdoor unit and each water tank is relatively independent, ensuring that the heat pump system can achieve different functions.

[0007] Furthermore, the indoor unit of this utility model comes with a reversing valve and multiple water tanks. For the indoor unit, simply adding water tanks and a reversing valve can meet different usage functions, achieving more functions with a simpler structure. For the heat pump system, the pipe connections between the water tanks are completed during the product assembly process. At the installation site, the outdoor unit only needs two pipes to connect with the multiple water tanks of the indoor unit, eliminating the need for users to prepare accessories at the installation site. The connection steps between the outdoor and indoor units are reduced, lowering the difficulty of on-site installation and improving installation efficiency. The pre-assembled pipes also help reduce the risk of leakage and improve the product yield.

[0008] Optionally, the indoor unit has a housing, with a reversing valve and a water tank housed within the housing.

[0009] In this embodiment, the reversing valve and the water tank are built into the outer shell, which makes the product look simpler and more beautiful. The built-in reversing valve is more conducive to ensuring the assembly reliability of the reversing valve and reducing the risk of loosening and leakage.

[0010] Alternatively, the housing may have an outwardly protruding first connector that is connected to the inlet.

[0011] In this embodiment, the outer casing is provided with a first connector that protrudes outward, and the outdoor unit can be connected to the first connector, which makes it more convenient to connect the outdoor unit and the inlet of the reversing valve at the installation site.

[0012] Alternatively, the indoor unit may also include a connecting pipe, one end of which is connected to the inlet, and the other end which forms a first connector.

[0013] In this embodiment, one end of the connecting pipe extends out of the outer casing to form a first connector, and the other end is connected to the inlet of the reversing valve. This makes the installation of the reversing valve more flexible, and the reversing valve can be set according to the space inside the outer casing.

[0014] Optionally, the first connector is located on the top of the housing.

[0015] In this embodiment, the first connector is located at the top of the housing. On the one hand, it can make full use of the space above the housing and reduce the footprint of the indoor unit. On the other hand, the top connector is visually concealed, making the product look simple and beautiful.

[0016] Optionally, the housing is provided with a second connector for communicating with the outdoor unit, and the water tank is connected to the second connector.

[0017] In this embodiment, each water tank is connected to the second connector in parallel. This way, at the installation site, only two pipes need to be connected to connect the water tanks of the indoor unit to the outdoor unit, further simplifying the installation process.

[0018] Optionally, the indoor unit includes a domestic water tank and a buffer water tank, with a coil installed in the domestic water tank; the reversing valve has a first outlet and a second outlet, the first outlet being connected to the coil and the second outlet being connected to the buffer water tank.

[0019] In this embodiment, the indoor unit includes two water tanks: a domestic water tank for meeting the hot water needs of kitchen sinks, washbasins, etc., and a buffer water tank for meeting the environmental heat or cooling needs. The domestic water tank is equipped with a coil, and the first outlet of the reversing valve is connected to the coil. The medium flows from the outdoor unit into the coil through the first outlet of the reversing valve, and the coil exchanges heat with the water in the domestic water tank to heat the water. The second outlet of the reversing valve is connected to the buffer water tank, and the medium flows from the outdoor unit into the buffer water tank through the second outlet of the reversing valve, and then flows through the buffer water tank to the heating or cooling equipment to provide heating or cooling to the environment. In this way, the heat pump system can provide hot water, heating, or cooling functions.

[0020] Optionally, the indoor unit is equipped with a first temperature sensor, which is communicatively connected to the controller and configured to detect the water temperature of the domestic water tank. If the first temperature sensor detects that the domestic water tank is at a first temperature, the controller is configured to control the reversing valve to be in a state where the inlet and the first outlet are open; and / or

[0021] The indoor unit is equipped with a second temperature sensor that communicates with the controller. It is configured to detect the water temperature of the buffer water tank. If the second temperature sensor detects that the buffer water tank is in the second temperature state, the controller is configured to control the reversing valve to be in the state of opening the inlet and the second outlet.

[0022] In this embodiment, a first temperature detection device is installed in the domestic water tank. When the water temperature in the domestic water tank is detected to be at the first temperature state, the controller sends a command to the reversing valve to connect the indoor unit and the domestic water tank, so that the medium can flow from the indoor unit to the coil of the domestic water tank, and timely replenish the heating of the domestic water tank to meet the demand for domestic hot water. This makes the heating more timely, ensures a sufficient supply of hot water, reduces the user's waiting time, and improves the user experience.

[0023] Similarly, a second temperature detection device is installed in the buffer water tank. When the water temperature in the buffer water tank is detected to be at the second temperature state, the controller sends a command to the reversing valve to open the indoor unit and the buffer water tank, so that the medium can flow from the indoor unit to the buffer water tank, thereby achieving timely heating of the environment and keeping the ambient temperature comfortable and stable.

[0024] Optionally, the indoor unit further includes a first electric heating element, which is disposed in the domestic water tank and communicates with the controller. A first temperature detection element detects that the domestic water tank is in a third temperature state, and the controller is configured to control the operation of the first electric heating element; and / or

[0025] The indoor unit also includes a second electric heating element, which is disposed in the buffer water tank and communicates with the controller. The second temperature detection element detects that the buffer water tank is in a fourth temperature state, and the controller is configured to control the operation of the second electric heating element.

[0026] In this embodiment, a first electric heating element for auxiliary heating is further provided in the domestic water tank. When the water temperature in the domestic water tank drops too quickly, the controller can promptly control the first electric heating element to start and heat the water in the domestic water tank, thereby ensuring a sufficient supply of hot water and improving the user experience.

[0027] Similarly, a second electric heating element for auxiliary heating is installed in the buffer water tank. When the water temperature in the buffer water tank drops too quickly, the controller can promptly activate the second electric heating element to heat the water in the buffer water tank, further ensuring the ambient temperature.

[0028] Optionally, the domestic water tank is located above the buffer water tank, and the reversing valve is located on the side of the domestic water tank.

[0029] Optionally, the indoor unit also includes a driver connected to a buffer tank for driving the flow of media within the buffer tank.

[0030] In this embodiment, the medium in the buffer tank is driven by a driver to flow into the heating or cooling equipment, so that the medium can flow into the heating or cooling equipment at a greater distance, ensuring the heating or cooling requirements. In addition, the indoor unit of this utility model has a built-in driver, which saves users the steps of preparing accessories and connecting pipes at the installation site, reducing the difficulty of on-site installation.

[0031] This utility model also provides a heat pump system, including: an outdoor unit; and an indoor unit as described in any of the preceding claims, wherein the reversing valve of the indoor unit is connected to the outdoor unit. Attached Figure Description

[0032] Figure 1 A perspective view of the indoor unit provided by this utility model;

[0033] Figure 2 The front view of the indoor unit provided by this utility model;

[0034] Figure 3 Left view of the indoor unit provided by this utility model;

[0035] Figure 4 A top view of the indoor unit provided by this utility model;

[0036] Figure 5 A front view of a portion of the structure of the indoor unit provided by this utility model;

[0037] Figure 6 for Figure 5 Top view;

[0038] Figure 7 for Figure 5 A three-dimensional image.

[0039] Figure 8 An exploded view of a portion of the structure of the indoor unit provided by this utility model;

[0040] Figure 9 A system diagram showing the installation of the heat pump system provided by this utility model.

[0041] The correspondence between the reference numerals and the component names is as follows:

[0042] Indoor unit 100; outer casing 101; first connector 1011; second connector 1012; third connector 1013; fourth connector 1014; fifth connector 1015; sixth connector 1016; seventh connector 1017; domestic water tank 110A; buffer water tank 110B; coil 111; first electric heating element 112; second electric heating element 113; first temperature detection element 114; reversing valve 120; inlet 121; first outlet 122A; second outlet 122B; controller 130; connecting pipe 140; driver 150; outdoor unit 200; shower head 300; fan coil 400; radiator 500; underfloor heating 600. Detailed Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0045] The indoor unit 100 of some embodiments of the present invention is described below with reference to the accompanying drawings.

[0046] like Figures 1 to 9 As shown, this embodiment discloses an indoor unit 100 for a heat pump system, including a reversing valve 120, a controller 130, and at least two water tanks.

[0047] The indoor unit 100 provided by this utility model is equipped with at least two water tanks (see details for water tanks). Figures 1 to 9 (For understanding the domestic water tank 110A and buffer water tank 110B), compared to the existing single water tank, by connecting the water tank to different external devices, the heat pump system can supply heat to multiple external devices, meeting different hot water / heating needs, such as the hot water needs of domestic sinks and washbasins, the heating needs of heating equipment, and the cooling needs of cooling equipment, etc., enriching the functions of the heat pump system and realizing the efficient utilization of the system.

[0048] Of course, those skilled in the art can also configure the water tank to connect to other external devices according to actual needs, and this utility model does not impose specific limitations on this.

[0049] At the same time, such as Figure 7 As shown, the directional valve 120 has one inlet 121 and at least two outlets (see [link to outlet diagram]). Figures 1 to 9 (Understanding the first outlet 122A and the second outlet 122B), the inlet 121 is used to connect to the outdoor unit 200 of the heat pump system, and the outlet is connected one-to-one with the water tank. The controller 130 is communicatively connected to the reversing valve 120 and configured to control the reversing valve 120 to open or close the water path between the outdoor unit 200 and any of the water tanks. More specifically, the reversing valve 120 is an electric three-way valve, and the controller 130 is electrically connected to the electric three-way valve.

[0050] The outlet of the reversing valve 120 is connected one-to-one with the water tank. The controller 130 controls the reversing valve 120 to switch, so that the water circuit between the outdoor unit 200 and each water tank is relatively independent, ensuring that the heat pump system can achieve different functions.

[0051] Furthermore, the indoor unit 100 of this utility model comes with a reversing valve 120 and multiple water tanks. For the indoor unit 100, simply adding water tanks and the reversing valve 120 can meet different usage functions, achieving more functions with a simpler structure. For the heat pump system, the indoor unit 100 achieves the connection of pipes between each water tank during the product assembly process. At the installation site, the outdoor unit 200 only needs two pipes to connect with the multiple water tanks of the indoor unit 100, saving users the step of preparing accessories at the installation site. The connection steps between the outdoor unit 200 and the indoor unit 100 are reduced, reducing the difficulty of on-site installation, improving installation efficiency, and the pre-assembled pipes are also more conducive to reducing the risk of leakage and improving the product yield.

[0052] like Figure 2 , Figure 3 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further defines the indoor unit 100 as having a housing 101, with the reversing valve 120 and water tank disposed within the housing 101. The reversing valve 120 and water tank being built into the housing 101 makes the product's appearance simpler and more aesthetically pleasing, and the built-in design of the reversing valve 120 better ensures the reliable assembly of the reversing valve 120, reducing the risk of loosening and leakage.

[0053] Furthermore, such as Figure 2 , Figure 6 and Figure 7As shown, the outer casing 101 is provided with an outwardly protruding first connector 1011, which is connected to the inlet 121. The outer casing 101 is provided with an outwardly protruding first connector 1011, and the outdoor unit 200 can be connected to the first connector 1011, which makes it easier to connect the outdoor unit 200 and the inlet 121 of the reversing valve 120 on site.

[0054] Furthermore, such as Figure 7 As shown, the indoor unit 100 also includes a connecting pipe 140, one end of which is connected to the inlet 121, and the other end is formed as a first connector 1011.

[0055] In this specific embodiment, one end of the connecting pipe 140 extends out of the outer casing 101 to form a first connector 1011, and the other end is connected to the inlet 121 of the reversing valve 120. This makes the installation of the reversing valve 120 more flexible, and the reversing valve 120 can be set according to the space inside the outer casing 101.

[0056] For example, the first connector 1011 has a threaded structure, and the outdoor unit 200 is threadedly connected to the first connector 1011 via a water pipe.

[0057] More specifically, the first connector 1011 is located at the top of the housing 101. On the one hand, it can make full use of the space above the housing 101 and reduce the footprint of the indoor unit 100. On the other hand, the top connecting pipe 140 is visually concealed, making the product's appearance simple and beautiful.

[0058] like Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the outer casing 101 is provided with a second connector 1012 for communicating with the outdoor unit 200, and the water tank is connected to the second connector 1012.

[0059] In this embodiment, each water tank is connected to the second connector 1012 in parallel. This way, at the installation site, only two pipes need to be connected to connect the water tanks of the indoor unit 100 and the outdoor unit 200, further simplifying the installation steps.

[0060] Optionally, the indoor unit 100 is equipped with a confluence valve, the inlet of which is connected to each water tank, and the outlet is used to connect to the second connector 1012.

[0061] In one embodiment, such as Figure 5 and Figure 9As shown, the indoor unit 100 includes a domestic water tank 110A and a buffer water tank 110B. A coil 111 is installed inside the domestic water tank 110A. The reversing valve 120 has a first outlet 122A and a second outlet 122B. The first outlet 122A is connected to the coil 111, and the second outlet 122B is connected to the buffer water tank 110B.

[0062] In this embodiment, the indoor unit 100 includes two water tanks: a domestic water tank 110A for meeting the hot water needs of kitchen sinks, washbasins, etc., and a buffer water tank 110B for meeting the ambient heat or cooling needs. The domestic water tank 110A contains a coil 111, and the first outlet 122A of the reversing valve 120 is connected to the coil 111. The medium flows from the outdoor unit 200 into the coil 111 through the first outlet 122A of the reversing valve 120. The water in the coil 111 and the domestic water tank 110A... Heat exchange is performed to heat the water in the domestic water tank 110A. The second outlet 122B of the reversing valve 120 is connected to the buffer water tank 110B. The medium flows from the outdoor unit 200 into the buffer water tank 110B through the second outlet 122B of the reversing valve 120, and then flows through the buffer water tank 110B to the heating or cooling equipment to provide heating or cooling to the environment. In this way, the heat pump system can provide hot water, heating or cooling, and the heat carried by the medium can be directly exchanged with the environment, reducing heat loss.

[0063] More in detail, such as Figure 4 and Figure 6 As shown, the top of the outer casing 101 is also equipped with a third connector 1013, a fourth connector 1014, a fifth connector 1015, a sixth connector 1016, and a seventh connector 1017. The third connector 1013 connects the domestic water tank 110A to the municipal pipeline. The fourth connector 1014 connects the domestic water tank 110A to domestic water appliances, such as a shower head 300 and a kitchen faucet. Cold water from the municipal pipeline flows into the domestic water tank 110A through the third connector 1013, is heated, and then flows from the fourth connector 1014 to the shower head 300 and other domestic water appliances, thus achieving cold water inflow and hot water outflow in the domestic water tank 110A. The fifth connector 1015 forms a circulating water path. The sixth connector 1016 and the seventh connector 1017 connect to a buffer water tank 110B and a heating or cooling system, respectively, forming a heating or cooling circuit. In this way, all the interfaces of the indoor unit 100 are located on the top of the outer casing 101, making full use of the space above the outer casing 101, and the pipeline layout of the indoor unit 100 is neater and more aesthetically pleasing.

[0064] In some specific embodiments, the buffer water tank 110B of the indoor unit 100 is configured to be connected to heating equipment, such as one or more of the radiator 500 and underfloor heating 600. In this way, the heat pump system only needs to have heating capability, which simplifies the structural requirements of the indoor unit 100 and the outdoor unit 200, and also simplifies the control logic. This helps to reduce the cost of the product while realizing a multi-functional heat pump system.

[0065] In some other embodiments, the buffer water tank 110B of the indoor unit 100 is configured to be connected to the cooling equipment. More specifically, the buffer water tank 110B is connected to the fan coil unit 400. The outdoor unit 200 is equipped with a four-way valve, which controls the reversal of the medium so that the medium can carry the cooling capacity and achieve environmental cooling through the buffer water tank 110B and the fan coil unit 400.

[0066] Furthermore, the buffer water tank 110B of the indoor unit 100 can be designed to be connected to the heating and cooling equipment. More specifically, the buffer water tank 110B is connected to the fan coil unit 400, the radiator 500 (and / or the underfloor heating system 600).

[0067] In one embodiment, such as Figure 8 As shown, the indoor unit 100 is equipped with a first temperature detection element 114. It is communicatively connected to the controller 130 and configured to detect the water temperature of the domestic water tank 110A. If the first temperature detection element 114 detects that the domestic water tank 110A is at a first temperature state, the controller 130 is configured to control the reversing valve 120 to be in a state of opening the inlet 121 and the first outlet 122A.

[0068] In this embodiment, a first temperature detection element 114 is installed in the domestic water tank 110A. When the water temperature in the domestic water tank 110A is detected to be at the first temperature state, the controller 130 sends a command to the reversing valve 120 to connect the indoor unit 100 and the domestic water tank 110A, so that the medium can flow from the indoor unit 100 to the coil 111 of the domestic water tank 110A, and timely supplement the heating of the domestic water tank 110A to meet the demand for domestic hot water. This heating is more timely, ensures a sufficient supply of hot water, reduces the user's waiting time, and improves the user experience.

[0069] It should be noted that the first temperature state in this embodiment can be a specific temperature value, a temperature threshold, or a temperature difference, etc.

[0070] To give a more detailed example, the first temperature detection element 114 is a temperature sensor, which is located at the bottom of the domestic water tank 110A.

[0071] Furthermore, the indoor unit 100 also includes a first electric heating element 112, which is disposed in the domestic water tank 110A and is communicatively connected to the controller 130. A first temperature detection element 114 detects that the domestic water tank 110A is in a third temperature state, and the controller 130 is configured to control the operation of the first electric heating element 112.

[0072] In this embodiment, a first electric heating element 112 for auxiliary heating is further provided in the domestic water tank 110A. When the water temperature in the domestic water tank 110A drops too quickly, the controller 130 can promptly control the first electric heating element 112 to start and heat the water in the domestic water tank 110A, thereby ensuring a sufficient supply of hot water and improving the user experience.

[0073] In one embodiment, the indoor unit 100 is provided with a second temperature sensor, which is communicatively connected to the controller 130 and configured to detect the water temperature of the buffer water tank 110B. If the second temperature sensor detects that the buffer water tank 110B is in a second temperature state, the controller 130 is configured to control the reversing valve 120 to be in a state of opening the inlet 121 and the second outlet 122B.

[0074] In this embodiment, a second temperature detection device is installed in the buffer water tank 110B. When the water temperature in the buffer water tank 110B is detected to be at the second temperature state, the controller 130 sends a command to the reversing valve 120 to connect the indoor unit 100 and the buffer water tank 110B, so that the medium can flow from the indoor unit 100 to the buffer water tank 110B, thereby realizing timely heating of the environment and keeping the ambient temperature comfortable and stable.

[0075] It should be noted that the second temperature state in this embodiment can be a specific temperature value, a temperature threshold, or a temperature difference, etc.

[0076] To give a more detailed example, the first temperature detection element 114 is a temperature sensor, which is located at the bottom of the domestic water tank 110A.

[0077] Furthermore, the indoor unit 100 also includes a second electric heating element 113, which is disposed in the buffer water tank 110B and is communicatively connected to the controller 130. The second temperature detection element detects that the buffer water tank 110B is in a fourth temperature state, and the controller 130 is configured to control the operation of the second electric heating element 113.

[0078] A second electric heating element 113 for auxiliary heating is installed in the buffer water tank 110B. When the water temperature in the buffer water tank 110B drops too quickly, the controller 130 can promptly control the second electric heating element 113 to start, heating the water in the buffer water tank 110B and further ensuring the ambient temperature.

[0079] Optionally, the domestic water tank 110A is positioned above the buffer water tank 110B, and the reversing valve 120 is positioned to the side of the domestic water tank 110A. Understandably, the domestic water tank 110A is used for a longer and more frequent period of time, and in greater quantities than the buffer water tank 110B; therefore, the domestic water tank 110A is larger in volume than the buffer water tank 110B to meet domestic water demand. Positioning the reversing valve 120 to the side of the domestic water tank 110A makes full use of the side space of the domestic water tank 110A. Of course, those skilled in the art can also position the reversing valve 120 in other locations according to specific needs, such as to the side of the buffer water tank 110B.

[0080] More preferably, the indoor unit 100 also includes a driver 150, which is connected to the buffer water tank 110B and is used to drive the flow of the medium in the buffer water tank 110B. For example, the driver 150 is a water pump.

[0081] In this embodiment, the medium in the buffer tank 110B is driven by the driver 150, so that the medium can flow into the equipment at a greater distance, ensuring the heat supply requirements. In addition, the indoor unit 100 of this utility model comes with the driver 150, which saves the user from the steps of preparing accessories and connecting pipes at the installation site, reducing the difficulty of on-site installation.

[0082] This utility model also provides a heat pump system, including: an outdoor unit 200 and an indoor unit 100 of any of the above embodiments, wherein the reversing valve 120 of the indoor unit 100 is connected to the outdoor unit 200.

[0083] More in detail, such as Figure 9 As shown, the medium outlet of the outdoor unit 200 is connected to the first connector 1011 of the indoor unit 100 via a pipeline, and the medium inlet of the outdoor unit 200 is connected to the second connector 1012 of the indoor unit 100 via a pipeline. The inlet 121 of the reversing valve 120 is connected to the first connector 1011, the first outlet 122A of the reversing valve 120 is connected to the inlet of the coil 111 of the domestic water tank 110A, and the second outlet 122B is connected to the inlet of the buffer water tank 110B. The outlets of the coil 111 and the buffer water tank 110B are connected in parallel to the second connector 1012. The hot water outlet of the domestic water tank 110A is connected to domestic water components such as the shower head 300 via a pipeline to provide domestic hot water. The buffer water tank 110B is connected to one or more of the fan coil unit 400, radiator 500, and underfloor heating unit 600 via a pipeline to meet environmental heating needs.

[0084] The heat pump system provided by this utility model connects a water tank to different external devices, enabling the heat pump system to supply heat to multiple external devices and meet different hot water / heating needs, such as the hot water needs of domestic sinks and washbasins, the heating needs of heating equipment, and the cooling needs of cooling equipment. This enriches the functions of the heat pump system and achieves efficient utilization of the system.

[0085] Furthermore, the indoor unit 100 of this utility model comes with a reversing valve 120 and multiple water tanks. The indoor unit 100 achieves the connection of the pipelines between the water tanks during the product assembly process. At the installation site, the outdoor unit 200 only needs two pipelines to connect with the multiple water tanks of the indoor unit 100, saving the user the step of preparing accessories at the installation site. The connection steps between the outdoor unit 200 and the indoor unit 100 are reduced, which reduces the difficulty of on-site installation, improves installation efficiency, and the pre-assembled pipelines are also more conducive to reducing the risk of leakage and improving the product yield.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An indoor unit for a heat pump system, characterized by, include: At least two water tanks; A reversing valve has one inlet and at least two outlets, the inlet being connected to the outdoor unit of the heat pump system, and the outlets being connected one-to-one to the water tank; The controller is communicatively connected to the reversing valve and configured to control the reversing valve to open or close the water path between the outdoor unit and any of the water tanks; The indoor unit includes a domestic water tank and a buffer water tank, and the domestic water tank is equipped with a coil. The reversing valve has a first outlet and a second outlet, the first outlet being connected to the coil and the second outlet being connected to the buffer tank. The indoor unit is equipped with a first temperature sensor, which is communicatively connected to the controller and configured to detect the water temperature of the domestic water tank. If the first temperature sensor detects that the domestic water tank is at a first temperature, the controller is configured to control the reversing valve to open the inlet and the first outlet; and / or The indoor unit is equipped with a second temperature detection device, which is communicatively connected to the controller and configured to detect the water temperature of the buffer water tank. If the second temperature sensor detects that the buffer tank is in a second temperature state, the controller is configured to control the reversing valve to open the inlet and the second outlet.

2. The indoor unit according to claim 1, characterized in that, The indoor unit has a housing, and the reversing valve, the water tank, and the controller are disposed inside the housing; The outer casing is provided with an outwardly protruding first connector, which is connected to the inlet.

3. The indoor unit according to claim 2, characterized in that, Also includes: A connecting pipe, one end of which is connected to the inlet, and the other end of which forms the first connector.

4. The indoor unit according to claim 2 or 3, characterized in that, The outer casing is provided with a second connector for communicating with the outdoor unit, and the water tank is connected to the second connector.

5. The indoor unit according to claim 1, characterized in that, The indoor unit further includes a first electric heating element, which is disposed inside the domestic water tank and communicatively connected to the controller. A first temperature detection element detects that the domestic water tank is at a third temperature state. The controller is configured to control the operation of the first electric heating element; and / or The indoor unit also includes a second electric heating element, which is disposed in the buffer water tank and communicates with the controller. The second temperature detection element detects that the buffer water tank is in a fourth temperature state. The controller is configured to control the operation of the second electric heating element.

6. The indoor unit according to claim 5, characterized in that, The domestic water tank is located above the buffer water tank, and the reversing valve is located to the side of the domestic water tank.

7. The indoor unit according to claim 5, characterized in that, Also includes: A driver, connected to the buffer tank, is used to drive the flow of the medium within the buffer tank.

8. A heat pump system, characterized in that, include: Outdoor unit; The indoor unit as described in any one of claims 1 to 7, wherein the reversing valve of the indoor unit is connected to the outdoor unit.

Images