Heat pump system

Abstract

The embodiment of the utility model discloses a heat pump system. The heat pump system comprises indoor heat exchange equipment, a heat pump device, auxiliary heat exchange equipment and a valve assembly. The heat pump device communicates with a water inlet of the indoor heat exchange equipment through a first water supply pipeline and communicates with a water outlet of the indoor heat exchange equipment through a first water return pipeline. The auxiliary heat exchange equipment is communicated to the first water supply pipeline through a second water supply pipeline and is communicated to the first water return pipeline through a second water return pipeline; the valve assembly is arranged on the second water supply pipeline and / or the second water return pipeline and used for adjusting the flow of water flowing from the second water return pipeline to the second water supply pipeline through the auxiliary heat exchange equipment. According to the embodiment of the invention, heat energy complementation of the heat pump device and the auxiliary heat exchange equipment can be realized, so that a better heat energy effect can be realized.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and more particularly to a heat pump system. Background Technology

[0002] With the continuous development of society and economy, the continuous progress of science and technology, and the continuous improvement of people's living standards, multi-split air conditioning systems have been widely used. Currently, multi-split air conditioning systems typically include an outdoor unit and multiple indoor units. In actual applications, often only one outdoor unit is used to supply water to multiple indoor units. However, in some scenarios, the heating effect of the outdoor unit is not good. If only a single outdoor unit is used for heating, it is easy to result in poor energy efficiency. Utility Model Content

[0003] This application provides a heat pump system that enables heat energy complementarity between the heat pump device and auxiliary heat exchange equipment, thereby achieving better thermal performance.

[0004] This application provides a heat pump system, including:

[0005] Indoor heat exchange equipment;

[0006] The heat pump device is connected to the inlet of the indoor heat exchange equipment through a first water supply pipeline and to the outlet of the indoor heat exchange equipment through a first return water pipeline.

[0007] The auxiliary heat exchange equipment is connected to the first water supply pipeline via the second water supply pipeline and to the first water return pipeline via the second water return pipeline.

[0008] A valve assembly is disposed in the second water supply pipeline and / or the second water return pipeline, the valve assembly being used to regulate the water flow rate from the second water return pipeline to the second water supply pipeline through the auxiliary heat exchange equipment.

[0009] According to some embodiments of this application, the valve assembly is also disposed in the first water supply pipeline and / or the first water return pipeline.

[0010] According to some embodiments of this application, the valve assembly includes a first three-way valve and a second three-way valve. The first three-way valve is disposed in the first water supply pipeline and connected to the auxiliary heat exchange equipment through the second water supply pipeline. The second three-way valve is disposed in the first return water pipeline and connected to the auxiliary heat exchange equipment through the second return water pipeline.

[0011] According to some embodiments of this application, the first three-way valve includes a first inflow channel, a second inflow channel, and a first outflow channel, wherein the first inflow channel is connected to the heat pump device, the second inflow channel is connected to the auxiliary heat exchange device, and the first outflow channel is connected to the indoor heat exchange device; the second three-way valve includes a third inflow channel, a second outflow channel, and a third outflow channel, wherein the third inflow channel is connected to the indoor heat exchange device, the second outflow channel is connected to the heat pump device, and the third outflow channel is connected to the auxiliary heat exchange device.

[0012] According to some embodiments of this application, the valve assembly includes a first two-way valve and a second two-way valve, wherein the first two-way valve is disposed in the first water supply pipeline and the second two-way valve is disposed in the second water supply pipeline.

[0013] According to some embodiments of this application, the heat pump device includes a wired controller and multiple heat pump units. The wired controller is communicatively connected to the multiple heat pump units. All of the multiple heat pump units are connected to the inlet of the indoor heat exchange equipment through the first water supply pipeline and are connected to the outlet of the indoor heat exchange equipment through the first return water pipeline.

[0014] According to some embodiments of this application, the heat pump is provided with a water-fluorine heat exchanger, a water pump and a heat pump pipeline. The water-fluorine heat exchanger and the water pump are both located in the heat pump pipeline. One end of the heat pump pipeline is connected to the first water supply pipeline and the other end is connected to the first return water pipeline.

[0015] According to some embodiments of this application, the indoor heat exchange equipment includes at least one of the following: fan coil unit, radiant panel, and underfloor heating.

[0016] According to some embodiments of this application, the heat pump system further includes a buffer water tank, a water supply valve, and a water inlet pipe. The buffer water tank is disposed in the first return water pipeline, the water inlet pipe is connected to the buffer water tank, and the water supply valve is disposed in the water inlet pipe.

[0017] According to some embodiments of this application, the heat pump system further includes a manifold, through which both the first water supply line and the first water return line are connected to the indoor heat exchange equipment.

[0018] According to some embodiments of this application, one or more heat pump devices are provided, and when there are multiple heat pump devices, the multiple heat pump devices are connected to each other through the first water supply pipeline and the first water return pipeline.

[0019] According to the technical solution of the embodiments of this application, at least the following beneficial effects are achieved: The heat pump system includes an indoor heat exchange device, a heat pump unit, an auxiliary heat exchange device, and a valve assembly; wherein, the heat pump unit is connected to the inlet of the indoor heat exchange device through a first water supply pipeline, and the heat pump unit is also connected to the outlet of the indoor heat exchange device through a first return water pipeline, thereby forming a closed circulation water circuit between the heat pump unit and the indoor heat exchange device using the first water supply pipeline and the first return water pipeline; the auxiliary heat exchange device is connected to the first water supply pipeline through a second water supply pipeline, and connected to the first return water pipeline through a second return water pipeline, thereby also forming a closed circulation water circuit between the auxiliary heat exchange device and the indoor heat exchange device; and a valve assembly is provided on the second water supply pipeline and / or the second return water pipeline; during the heating and water supply process, the working state of the valve assembly can be adjusted according to actual needs, so that the water flow from the second return water pipeline to the second water supply pipeline through the auxiliary heat exchange device changes, so that the heat pump unit and the auxiliary heat exchange device can achieve thermal energy complementarity, thereby achieving better thermal energy effect.

[0020] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the heat pump system provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a heat pump system provided in another embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the structure of a heat pump system provided in another embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the internal structure of the heat pump host provided in the embodiment of this application. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0029] With the continuous development of society and economy, the continuous progress of science and technology, and the continuous improvement of people's living standards, multi-split air conditioning systems have been widely used. Currently, multi-split air conditioning systems typically include an outdoor unit and multiple indoor units. In actual applications, often only one outdoor unit is used to supply water to multiple indoor units. However, in some scenarios, the heating effect of the outdoor unit is not good. If only a single outdoor unit is used for heating, it is easy to result in poor energy efficiency.

[0030] Based on this, the present application provides a heat pump system that can achieve thermal energy complementarity between the heat pump device and the auxiliary heat exchange equipment, thereby achieving better thermal energy performance.

[0031] The following explanation is based on the accompanying diagram:

[0032] Reference Figure 1 , Figure 1The heat pump system provided in this application includes a heat pump device 100, an auxiliary heat exchange device 200, an indoor heat exchange device 300, and a valve assembly 400. The heat pump device 100 and the indoor heat exchange device 300 form a closed-loop water circuit through a first water supply pipe and a first water return pipe. The auxiliary heat exchange device 200 and the indoor heat exchange device 300 also form a closed-loop water circuit through a second water supply pipe and a second water return pipe. The first water supply pipe is connected to the second water supply pipe, thereby allowing the heat pump device 100 to transfer hot water. The hot water supplied by the auxiliary heat exchanger 200 can be collected and then transported together to the indoor heat exchanger 300 for heat exchange. The valve assembly 400 can be installed on the second supply water pipe and / or the second return water pipe, and is also connected to the auxiliary heat exchanger 200. Therefore, the valve assembly 400 can control the flow rate of hot water from the second return water pipe through the auxiliary heat exchanger 200 to the second supply water pipe, thus regulating the flow rate of water supplied from the auxiliary heat exchanger 200 to the indoor heat exchanger 300. Through this structural connection, during the water supply to the indoor heat exchanger 300, by controlling the operating state of the valve assembly 400, the heat pump device 100 and the auxiliary heat exchanger 200 can achieve thermal energy complementarity, thereby effectively solving the problem of poor energy efficiency.

[0033] It is worth noting that the heat pump system in this embodiment is a water system consisting of a heat pump device 100, an auxiliary heat exchange device 200, and an indoor heat exchange device 300. The three are connected by water channels. For example, cold water can be heated by the heat pump device 100 and the auxiliary heat exchange device 200 to turn it into hot water. Then, the hot water is transmitted to the indoor heat exchange device 300 for heat exchange through relevant connecting pipes. The hot water after heat exchange in the indoor heat exchange device 300 becomes cold water. The cold water is then directly returned to the heat pump device 100 or the auxiliary heat exchange device 200 for heating through relevant connecting pipes to reheat the cold water into hot water, and this cycle continues.

[0034] It is worth noting that the valve assembly 400 is installed on the second water supply pipeline and / or the second water return pipeline. This means that the valve assembly 400 can be installed independently on the second water supply pipeline, independently on the second water return pipeline, or simultaneously on both the second water supply pipeline and the second water return pipeline, and the valve assembly 400 is connected to the auxiliary heat exchange device 200. When it is necessary to use the auxiliary heat exchange device 200 to supply water to the indoor heat exchange device 300, it is only necessary to use the valve assembly 400 to open the water supply channel connecting the first water supply pipeline and the auxiliary heat exchange device 200, so that the hot water generated by the auxiliary heat exchange device 200 can be transferred to the indoor heat exchange device 300 through the second water supply pipeline. Under normal circumstances, the heat pump unit 100 first supplies water to the indoor heat exchange equipment 300. If the heat pump unit 100 cannot meet the heat exchange requirements of the indoor heat exchange equipment 300 due to external environmental factors, the operating status of the valve assembly 400 is controlled, so that the auxiliary heat exchange equipment 200 also supplies water to the indoor heat exchange equipment 300 to meet its heat exchange needs. It should be noted that the heating efficiency of the auxiliary heat exchange equipment 200 is generally higher than that of the heat pump unit 100, thus effectively solving the problem of poor energy efficiency when the heat pump unit 100 cannot meet the heat exchange requirements of the indoor heat exchange equipment 300.

[0035] It is worth noting that when the valve assembly 400 is installed in the second water supply pipeline, the second water return pipeline, or both, it can regulate the water flow from the second water return pipeline through the auxiliary heat exchanger 200 to the second water supply pipeline. This means regulating the water flow from the auxiliary heat exchanger 200 to the indoor heat exchanger 300, so that the auxiliary heat exchanger 200 and the heat pump reversal 100 can simultaneously supply water to the indoor heat exchanger 300, effectively solving the problem of poor energy efficiency.

[0036] In some embodiments of this application, the heat pump device 100 may include an air source heat pump, which is an energy-saving device that uses high-grade energy to transfer heat from a low-grade heat source (air) to a high-grade heat source. It is a type of heat pump, and the heat pump device 100 is usually installed outdoors. The auxiliary heat exchange equipment 200 may be a gas-fired wall-hung boiler or a gas water heater, as long as the equipment can efficiently heat cold water; there is no limitation here. The indoor heat exchange equipment 300 may include a fan coil unit 310, a radiant panel 320, and underfloor heating 330. The fan coil unit 310 is a fan coil unit, which is one of the terminal devices of an air conditioning system, consisting of a small fan, an electric motor, and a coil (air heat exchanger). When cold or hot water flows through the coil, it exchanges heat with the air outside the coil, thereby cooling, dehumidifying, or heating the air to regulate indoor air parameters. It is a commonly used terminal device for cooling and heating. Radiant panel 320 is a plate-shaped HVAC device that acts as a heater emitting infrared heat radiation or a cooler absorbing infrared radiation. The process of heat transfer from a high-temperature object to a low-temperature object by emitting infrared rays is called thermal radiation; the absorption of infrared rays by a low-temperature object is called cold radiation. Radiant panel 320 heats or cools its working elements to achieve the purpose of providing thermal or cold radiant heating or cooling to the surrounding environment. Thermal radiant panels are also called infrared radiant panels, and cold radiant panels are also called negative radiant panels. Underfloor heating 330 is short for floor radiant heating, which uses the entire floor as a radiator. The heat medium in the floor's radiant layer evenly heats the entire floor, utilizing the floor's own heat storage and the upward radiation of heat to conduct heat from bottom to top, achieving the purpose of heating.

[0037] It is worth noting that the first water supply pipe, the second water supply pipe, the first return water pipe, and the second return water pipe can be rubber hoses. Rubber hoses have good corrosion resistance and rust prevention properties, which makes the connected water pipes more durable.

[0038] It is worth noting that during the control of the operating state of the valve assembly 400, the heat pump device 100 and the auxiliary heat exchange device 200 can be used together to supply water to the indoor heat exchange device 300, or only the auxiliary heat exchange device 200 can be used to supply water to the indoor heat exchange device 300; or only the heat pump device 100 can be used to supply water to the indoor heat exchange device 300. For example, when the heat pump device 100 cannot work normally due to the external environment, the heat pump device 100 can be shut down, and the valve assembly 400 can be controlled to supply water to the indoor heat exchange device 300 only using the auxiliary heat exchange device 200.

[0039] Reference Figure 1 and Figure 2The valve assembly 400 can also be installed in the first water supply pipeline and connected to the auxiliary heat exchanger 200. A valve assembly 400 is also installed in the first return water pipeline, allowing the cold water from the indoor heat exchanger 300 to return to the auxiliary heat exchanger 200 under the control of the valve assembly 400, thus enabling the auxiliary heat exchanger 200 to reheat the return water from the indoor heat exchanger 300. Furthermore, the valve assembly 400 can also be installed in the first return water pipeline, similarly allowing the cold water from the indoor heat exchanger 300 to return to the auxiliary heat exchanger 200 under the control of the valve assembly 400, thus enabling the auxiliary heat exchanger 200 to return water.

[0040] Reference Figure 1 and Figure 2 In the case where the valve assembly 400 includes a first three-way valve 410 and a second three-way valve 420, the first three-way valve 410 is provided in the first water supply pipeline, and one of its channels is connected to the auxiliary heat exchanger 200; the second three-way valve 420 is provided in the first return water pipeline, and one of its channels is also connected to the auxiliary heat exchanger 200.

[0041] It is worth noting that three-way valves are classified into confluence valves and diverter valves according to their fluid action. A confluence valve has two inlets, and the fluid flows out from one outlet after merging. A diverter valve has one fluid inlet, and the fluid flows out from two outlets after being divided. For the first three-way valve 410, it has two inlets, one of which is connected to the heat pump unit 100 through the first water supply pipe, and the other inlet is connected to the auxiliary heat exchange equipment 200 through the second water supply pipe. The first three-way valve 410 also has one outlet, which is connected to the indoor heat exchange equipment 300. Therefore, the first three-way valve 410 is a confluence valve. For the second three-way valve 420, it has two outlets, one of which is connected to the heat pump unit 100 through the first return water pipe, and the other outlet is connected to the auxiliary heat exchange equipment 200 through the second return water pipe. The second three-way valve 420 also has one inlet, which is connected to the indoor heat exchange equipment 300. Therefore, the second three-way valve 420 is a diverter valve.

[0042] In some embodiments of this application, the first three-way valve 410 includes three channels: a first inflow channel connecting to the heat pump device 100, a second inflow channel connecting to the auxiliary heat exchange device 200, and a first outflow channel connecting to the indoor heat exchange device 300. The second three-way valve 420 also includes three channels: a second outflow channel connecting to the heat pump device 100, a third outflow channel connecting to the auxiliary heat exchange device 200, and a third inflow channel connecting to the indoor heat exchange device 300. The states of each channel of the first three-way valve 410 and the second three-way valve 420 can be controlled independently, thereby facilitating changes to the water supply mode of the heat pump system.

[0043] It should be noted that the water flow of the three channels of the first three-way valve 410 and the second three-way valve 420 can be controlled separately to achieve different water supply methods. For example, when only the auxiliary heat exchanger 200 is needed to supply water to the indoor heat exchanger 300, only the channel of the first three-way valve 410 connected to the auxiliary heat exchanger 200 needs to be opened while the channel of the first three-way valve 410 connected to the heat pump device 100 needs to be closed, and the channel of the first three-way valve 410 connected to the indoor heat exchanger 300 needs to be opened; when only the heat pump device 100 needs to supply water to the indoor heat exchanger 300, only the channel of the first three-way valve 410 connected to the auxiliary heat exchanger 200 needs to be closed while the channel of the first three-way valve 410 connected to the heat pump device 100 needs to be opened, and the channel of the first three-way valve 410 connected to the indoor heat exchanger 300 needs to be opened. Furthermore, during operation, the opening and closing states of the first three-way valve 410 and the second three-way valve 420 correspond to each other. For example, when only the auxiliary heat exchanger 200 needs to supply water to the indoor heat exchanger 300, the channel in the first three-way valve 410 connected to the auxiliary heat exchanger 200 is open, while the channel in the first three-way valve 410 connected to the heat pump device 100 is closed, and the channel in the first three-way valve 410 connected to the indoor heat exchanger 300 is also open. At this time, the channel in the second three-way valve 420 connected to the auxiliary heat exchanger 200 is open, while the channel in the second three-way valve 420 connected to the heat pump device 100 is closed, and the channel in the second three-way valve 420 connected to the indoor heat exchanger 300 is also open, so that the auxiliary heat exchanger 200 and the indoor heat exchanger 300 form a circulating water loop.

[0044] Reference Figure 3When the valve assembly 400 includes a first two-way valve 430 and a second two-way valve 440, the first two-way valve 430 can be installed on the first water supply pipeline, and the second two-way valve 440 can be installed on the second water supply pipeline. The first two-way valve 430 can control whether the hot water from the heat pump unit 100 can be delivered to the indoor heat exchanger 300 through the first water supply pipeline, and the second two-way valve 440 can control whether the hot water from the heat pump unit 100 can be delivered to the indoor heat exchanger 300 through the second water supply pipeline. When only the auxiliary heat exchanger 200 is needed for indoor heat exchange... When the device 300 is supplying water, simply closing the first two-way valve 430 and opening the second two-way valve 440 allows the hot water generated by the auxiliary heat exchanger 200 to be transferred to the indoor heat exchanger 300. Similarly, when only the heat pump device 100 is needed to supply water to the indoor heat exchanger 300, simply opening the first two-way valve 430 and closing the second two-way valve 440 allows the hot water generated by the heat pump device 100 to be transferred to the indoor heat exchanger 300. This method simplifies and speeds up the control process of the valve assembly 400. The use of "first" and "second" to distinguish between the first two-way valve 430 and the second two-way valve 440 does not imply that they are different types of valves, but is merely for clearer illustration of the embodiments of this application.

[0045] Reference Figures 1 to 3 The heat pump device 100 may further include two heat pump units, and there is a master-slave relationship between the two heat pump units. In this embodiment, the first heat pump unit 110 is the master heat pump unit, and the second heat pump unit 120 is the slave heat pump unit. The two are also connected by a communication connection line, so that the first heat pump unit 110 can also control the second heat pump unit 120. During the process of using the heat pump device 100 to supply water to the indoor heat exchange equipment 300, the first heat pump unit 110 and the second heat pump unit 120 can work simultaneously. The hot water generated by the first heat pump 10 and the second heat pump 120 can be collected and then delivered to the indoor heat exchange equipment 300 through the first water supply pipeline. The cold water discharged from the indoor heat exchange equipment 300 can be delivered to the first heat pump 110 and the second heat pump 120 through the first return water pipeline. The first heat pump 110 is also connected to a wired controller 130, so that the operating status of the first heat pump 110 and the second heat pump 120 can be controlled by the wired controller 130, making the control process of the entire heat pump device 100 simpler and faster.

[0046] It is worth noting that the first heat pump 130 and the second heat pump 140 are not different types of heat pumps. The distinction between "first" and "second" is merely for the purpose of more clearly illustrating the embodiments of this application. It is understood that referring to the first heat pump 130 as the main heat pump in this application does not mean that only the first heat pump 130 can be used as the main heat pump. In fact, the second heat pump 140 can also be used as the main heat pump; simply connecting the wired controller 130 to the second heat pump 140 is sufficient.

[0047] In some embodiments of this application, the heat pump device 100 may further include multiple heat pump units, which are controlled by a wired controller 130. The wired controller 130 can then be used to control and process the multiple heat pump units, achieving more efficient and stable water supply treatment. It is worth noting that this application only provides an embodiment with two heat pump units, and it should not be assumed that the heat pump device 100 can only include two heat pump units. Multiple heat pump devices 100 can be provided, and these multiple heat pump devices 100 can be connected through a first water supply pipe and a first water return pipe.

[0048] In some embodiments of this application, ball valves are also provided between the first heat pump 110 and the valve assembly 400, and between the second heat pump 120 and the valve assembly 400. By controlling the ball valves, the water supply pipeline of the heat pump device 100 can be further controlled.

[0049] In some embodiments of this application, the fan coil unit 310 and the radiant panel 320 can be installed in the same indoor space, such as in the same room, or they can be installed separately in different indoor spaces; this is not limited here. Furthermore, during the installation of the fan coil unit 310, radiant panel 320, and underfloor heating 340, a manifold 340 can be used for unified connection. The manifold 340 can perform the collection, distribution, flow regulation, and control of supply and return water, and can manually or automatically remove air trapped in this area. Using the manifold 340, different heat exchange devices can be connected together, greatly simplifying the internal connection structure of the indoor heat exchange equipment 300.

[0050] In some embodiments of this application, the water manifold 340 is connected to the fan coil unit 310 and the radiant plate 320 through the first water supply pipe and the first water return pipe, so that multiple fan coil units 310 or multiple radiant plates 320 can work simultaneously.

[0051] Reference Figure 4The heat pump device 100 includes a first heat pump 110 and a second heat pump 120, both of which include a water-fluorine heat exchanger 140, a water pump 150, and a heat pump pipeline. The heat pump pipeline is connected between a first water supply pipeline and a first return water pipeline. The water-fluorine heat exchanger 140 can heat the cold water input from the first return water pipeline. The water pump 150 can deliver the heated cold water to the first water supply pipeline so that hot water can be delivered from the first water supply pipeline to the indoor heat exchange equipment 300.

[0052] Reference Figure 2 and Figure 3 A buffer water tank 500 can also be installed on the first return water pipe, and the buffer water tank 500 can also be connected to the inlet water pipe of the auxiliary heat exchange equipment 200, and a water replenishment valve 600 is also installed on the connecting pipe; the buffer water tank 500 can temporarily store the return water of the indoor heat exchange equipment 300 to regulate the water flow into the heat pump device 100. When the water flow is insufficient, the water replenishment valve 600 can be opened to replenish the buffer water tank 500, thereby regulating the water flow into the heat pump device 100, and thus adjusting the return water flow according to the performance of the heat pump device 100.

[0053] It is understood that the number of the aforementioned indoor heat exchange equipment 300 can be two, three, or more, and this application embodiment does not make a specific limitation.

[0054] It should be noted that regarding the installation location of the aforementioned indoor heat exchange equipment 300, multiple indoor heat exchange equipment 300 can be installed in the same space area. For example, multiple indoor heat exchange equipment 300 can be installed simultaneously in a room, or multiple indoor heat exchange equipment 300 can be installed simultaneously in a living room. Alternatively, multiple indoor heat exchange equipment 300 can also be installed in different spaces. For example, some indoor heat exchange equipment 300 can be installed in a room, and another part can be installed in a living room, or some indoor heat exchange equipment 300 can be installed in a first room, and another part can be installed in a second room. This application embodiment does not specifically limit the installation location of the indoor heat exchange equipment 300.

[0055] It should be noted that, regarding the installation location of the indoor heat exchange device 300 within the space area, in this embodiment of the application, the indoor heat exchange device 300 can be installed on the ceiling of the room, or on the floor of the room, or the installation location of the indoor heat exchange device 300 can be reasonably allocated according to actual usage needs. This embodiment of the application does not make specific limitations in this regard.

[0056] Additionally, it should be noted that the type of indoor heat exchange equipment 300 mentioned above can be a fan coil terminal formed by pairing with a fan coil unit 310, or a radiant terminal formed by pairing with a radiant panel 320, such as a ceiling radiant panel or a floor heating system, or other types of terminal equipment. This application embodiment does not specifically limit this.

[0057] Reference Figure 1 For example, when it is necessary to supply water to the indoor heat exchanger 300 using the auxiliary heat exchanger 200, if the valve assembly 400 is a three-way valve, the three-way valve needs to be controlled; if the three-way valve is an on / off valve, the second inflow channel and the first outflow channel connected to the auxiliary heat exchanger 200 will be opened, and the first inflow channel and the first outflow channel connected to the heat pump device 100 will be closed, so that only the auxiliary heat exchanger is used to supply water to the indoor heat exchanger 300.

[0058] Reference Figure 2 For example, when the three-way valve is a proportional valve, the valve opening between the second inflow channel and the first outflow channel connecting to the auxiliary heat exchanger 200 is increased, while the valve opening between the first inflow channel and the first outflow channel connecting to the heat pump device 100 is decreased. This allows the heat pump device 100 and the auxiliary heat exchanger 200 to simultaneously supply water to the indoor heat exchanger 300, thus solving the problem of poor energy efficiency. When the three-way valve is a proportional valve, the set outlet water temperature of the auxiliary heat exchanger 200 can be determined based on the aforementioned set supply water temperature and water temperature. By controlling the three-way valve, the outlet water temperature of the auxiliary heat exchanger 200 can reach the set outlet water temperature.

[0059] Reference Figure 3 For example, when the valve assembly 400 includes a first two-way valve 430 and a second two-way valve 440, with the first two-way valve 430 located in the first water supply pipeline and the second two-way valve 440 located in the second water supply pipeline or the second return pipeline, the two two-way valves can be controlled separately to increase the water flow from the auxiliary heat exchanger 200 to the indoor heat exchanger 300. In this case, only the second two-way valve 440 needs to be opened and the first two-way valve 430 closed, so that only the auxiliary heat exchanger 200 is used to supply water to the indoor heat exchanger 300 without using the heat pump device 100. Using the high-efficiency heating auxiliary heat exchanger 200 for water supply effectively solves the problem of poor energy efficiency.

[0060] The above is a detailed description of the preferred embodiments of this application. However, this application is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A heat pump system, characterized in that, include: Indoor heat exchange equipment; The heat pump device is connected to the inlet of the indoor heat exchange equipment through a first water supply pipeline and to the outlet of the indoor heat exchange equipment through a first return water pipeline. The auxiliary heat exchange equipment is connected to the first water supply pipeline via the second water supply pipeline and to the first water return pipeline via the second water return pipeline. A valve assembly is disposed in the second water supply pipeline and / or the second water return pipeline, the valve assembly being used to regulate the water flow rate from the second water return pipeline to the second water supply pipeline through the auxiliary heat exchange equipment.

2. The heat pump system according to claim 1, characterized in that, The valve assembly is also provided in the first water supply pipeline and / or the first water return pipeline.

3. The heat pump system according to claim 2, characterized in that, The valve assembly includes a first three-way valve and a second three-way valve. The first three-way valve is located in the first water supply pipeline and connected to the auxiliary heat exchange equipment through the second water supply pipeline. The second three-way valve is located in the first return water pipeline and connected to the auxiliary heat exchange equipment through the second return water pipeline.

4. The heat pump system according to claim 3, characterized in that, The first three-way valve includes a first inflow channel, a second inflow channel, and a first outflow channel. The first inflow channel is connected to the heat pump device, the second inflow channel is connected to the auxiliary heat exchange device, and the first outflow channel is connected to the indoor heat exchange device. The second three-way valve includes a third inflow channel, a second outflow channel, and a third outflow channel. The third inflow channel is connected to the indoor heat exchange device, the second outflow channel is connected to the heat pump device, and the third outflow channel is connected to the auxiliary heat exchange device.

5. The heat pump system according to claim 2, characterized in that, The valve assembly includes a first two-way valve and a second two-way valve, wherein the first two-way valve is disposed in the first water supply pipeline and the second two-way valve is disposed in the second water supply pipeline.

6. The heat pump system according to any one of claims 1 to 5, characterized in that, The heat pump device includes a wired controller and multiple heat pump units. The wired controller is communicatively connected to the multiple heat pump units. All of the multiple heat pump units are connected to the inlet of the indoor heat exchange equipment through the first water supply pipeline and are connected to the outlet of the indoor heat exchange equipment through the first return water pipeline.

7. The heat pump system according to claim 6, characterized in that, The heat pump unit is equipped with a water-fluorine heat exchanger, a water pump and a heat pump pipeline. The water-fluorine heat exchanger and the water pump are both located in the heat pump pipeline. One end of the heat pump pipeline is connected to the first water supply pipeline and the other end is connected to the first return water pipeline.

8. The heat pump system according to any one of claims 1 to 5, characterized in that, The indoor heat exchange equipment includes at least one of the following: fan coil unit, radiant panel, and underfloor heating.

9. The heat pump system according to any one of claims 1 to 5, characterized in that, The heat pump system also includes a buffer water tank, a water supply valve, and an inlet pipe. The buffer water tank is located in the first return water pipeline, the inlet pipe is connected to the buffer water tank, and the water supply valve is located in the inlet pipe.

10. The heat pump system according to any one of claims 1 to 5, characterized in that, The heat pump system also includes a manifold, through which the first water supply line and the first water return line are connected to the indoor heat exchange equipment.

11. The heat pump system according to any one of claims 1 to 5, characterized in that, The heat pump device is provided in one or more ways. When there are multiple heat pump devices, the multiple heat pump devices are connected to each other through the first water supply pipeline and the first water return pipeline.

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