Heat pump system

Abstract

The utility model discloses a heat pump system which comprises a heat exchanger with a first pipeline and a second pipeline, a pump body, a heat storage device, a heat dissipation device, a communicating pipeline and a valve assembly, the heat storage device and the heat dissipation device are both connected with the second pipeline, and the heat storage device is connected with a cold water inlet and a hot water outlet; the communicating pipeline is connected with the heat storage device and the heat dissipation device; the valve assembly is used for switching to the state that the heat storage device or the heat dissipation device communicates with the second pipeline, the heat storage device and the heat dissipation device communicate with the second pipeline after being connected in parallel, and the heat storage device and the heat dissipation device communicate with the second pipeline after being connected in series through a communicating pipeline. The heat pump system changes the connection state of the heat storage device, the heat dissipation device and the second pipeline through the valve assembly and the communicating pipeline, and multiple modes that the heat dissipation device dissipates heat independently, the heat storage device stores heat independently, the heat dissipation device dissipates heat while the heat storage device stores heat, the heat storage device supplies heat to the heat dissipation device, the heat storage device supplies heat to the heat dissipation device, and the heat pump system defrosts are achieved. And different heat utilization requirements of users are met.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump systems, in particular to a heat pump system capable of storing heat. Background Art

[0002] In a heat pump combined supply system, a domestic water tank is usually equipped. The domestic water tank has a large volume and needs to store heat in advance for use, which will cause problems of heat loss and water quality pollution. And if heat storage for heating is required, an additional heating water tank is needed, which increases the complexity of the system and reduces the reliability of the heat pump system.

[0003] In order to avoid using a water tank, phase change energy storage materials are also applied to the heat pump system in the prior art. However, the phase change heat storage device can provide domestic water after heat storage, and its working mode is single, unable to meet the various heat use requirements of users.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The utility model provides a heat pump system, which solves the technical problem that the existing phase change heat storage device stores heat to provide domestic water, has a single working mode, and cannot meet the various heat use requirements of users.

[0006] To achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] A heat pump system includes a heat exchanger having a first pipeline and a second pipeline. The system further includes:

[0008] A pump body;

[0009] A heat storage device and a heat dissipation device, which are connected to the second pipeline. The heat storage device is connected with a cold water inlet and a hot water outlet;

[0010] A communication pipeline, which is connected to the heat storage device and the heat dissipation device;

[0011] A valve assembly for switching to states where the heat storage device or the heat dissipation device is respectively communicated with the second pipeline, the heat storage device and the heat dissipation device are connected in parallel and then communicated with the second pipeline, and the heat storage device and the heat dissipation device are connected in series through the communication pipeline and then communicated with the second pipeline.

[0012] In some embodiments of this application, when the valve assembly switches to the state where the heat storage device and the heat dissipation device are connected in series through the communication pipeline and then communicated with the second pipeline, the heat storage device supplies heat to the heat dissipation device.

[0013] In some embodiments of the present application, the heat pump system includes a refrigerant circulation circuit, which includes a compressor, a four-way valve, a first heat exchanger, a throttling device, and a second heat exchanger connected in sequence. The second heat exchanger has a first pipeline and a second pipeline. The first pipeline is connected to the refrigerant circulation circuit. When the valve assembly is switched to a state where the heat storage device and the heat dissipation device are connected in series through a connecting pipeline and communicated with the second pipeline, the compressor stops operating.

[0014] In some embodiments of the present application, the heat pump system includes a refrigerant circulation circuit, which includes a compressor, a four-way valve, a first heat exchanger, a throttling device, and a second heat exchanger connected in sequence. The second heat exchanger has a first pipeline and a second pipeline. The first pipeline is connected to the refrigerant circulation circuit. When the valve assembly is switched to a state where the heat storage device and the heat dissipation device are connected in series through a connecting pipeline and communicated with the second pipeline, the compressor operates and the four-way valve is switched to a refrigeration connection state.

[0015] In some embodiments of the present application, when the valve assembly is switched to a state where the heat storage device is communicated with the second pipeline, the heat exchanger supplies heat to the heat storage device; when the valve assembly is switched to a state where the heat dissipation device is communicated with the second pipeline, the heat exchanger supplies heat to the heat dissipation device; when the valve assembly is switched to a state where the heat storage device and the heat dissipation device are connected in parallel and communicated with the second pipeline, the heat exchanger supplies heat to the heat storage device and the heat dissipation device.

[0016] In some embodiments of the present application, the valve assembly includes:

[0017] A first valve, which is respectively connected to the second interface of the heat storage device, the second interface of the connecting pipeline, the second interface of the second pipeline, and the second interface of the heat dissipation device;

[0018] A second valve, which is respectively connected to the first interface of the second pipeline, the first interface of the heat storage device, and a third valve;

[0019] A third valve, which is respectively connected to the second valve, the first interface of the heat dissipation device, and the first interface of the connecting pipeline.

[0020] In some embodiments of the present application, the heat dissipation device includes a plurality of heat dissipation devices. When the heat dissipation device includes a plurality of parallel heat dissipation devices, a switching device is provided between the first interfaces of the parallel heat dissipation devices and the third valve.

[0021] In some embodiments of the present application, the heat dissipation device includes at least one of a floor heating device, an air handling unit device, and a heating device.

[0022] In some embodiments of the present application, the cold water inlet and the hot water outlet are connected through a connecting pipeline of the heat storage device, and a water pump is provided on the connecting pipeline of the heat storage device.

[0023] In some embodiments of the present application, a check valve is provided on the connecting pipeline of the heat storage device, and the check valve allows the water flow at the hot water outlet to flow towards the cold water inlet.

[0024] Compared with the prior art, the advantages and positive effects of the present utility model are as follows: A heat pump system includes a heat exchanger having a first pipeline and a second pipeline, a pump body, a heat storage device, a heat dissipation device, a connecting pipeline, and a valve assembly. Both the heat storage device and the heat dissipation device are connected to the second pipeline. The heat storage device is connected with a cold water inlet and a hot water outlet. The connecting pipeline is connected with the heat storage device and the heat dissipation device. The valve assembly is used to switch to states where the heat storage device or the heat dissipation device is respectively communicated with the second pipeline, the heat storage device and the heat dissipation device are connected in parallel and then communicated with the second pipeline, and the heat storage device and the heat dissipation device are connected in series through the connecting pipeline and then communicated with the second pipeline. The heat pump system changes the connection states of the heat storage device, the heat dissipation device and the second pipeline through the valve assembly and the connecting pipeline, and can realize multiple modes such as the heat dissipation device dissipating heat alone, the heat storage device storing heat alone, the heat dissipation device dissipating heat while the heat storage device stores heat, the heat storage device supplying heat to the heat dissipation device, the heat storage device supplying heat to the heat dissipation device and the heat pump system defrosting, so as to meet different heat use requirements of users.

[0025] After reading the specific embodiments of the present utility model in conjunction with the accompanying drawings, other features and advantages of the present utility model will become clearer. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a circulation diagram of the heat pump system according to the embodiment;

[0028] Figure 2 It is a heat pump heating circulation diagram of the heat pump system according to the embodiment;

[0029] Figure 3 It is a heat pump heat storage mode circulation diagram of the heat pump system according to the embodiment;

[0030] Figure 4 It is a heat pump heating and heat storage mode circulation diagram of the heat pump system according to the embodiment;

[0031] Figure 5 It is a heat storage heat release heating mode circulation diagram of the heat pump system according to the embodiment;

[0032] Figure 6Defrosting uninterrupted heating mode circulation diagram of a heat pump system according to an embodiment;

[0033] Figure 7 Circulation diagram for a heat storage device of a heat pump system to supply domestic water according to an embodiment;

[0034] Figure 8 Circulation diagram of a heat pump system according to another embodiment;

[0035] Figure 9 Circulation diagram of a heat pump system according to still another embodiment;

[0036] Figure 10 Circulation diagram for a heat storage device of a heat pump system to supply domestic water according to an embodiment. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0038] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0039] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0040] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being “above” or “below” the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being “below”, “beneath” and “underneath” the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0042] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0043] The heat pump system provided in this application performs the refrigerant cycle of the heat pump system by using a compressor, a condenser, a throttling device and an evaporator. The refrigerant cycle includes a series of processes involving compression, condensation, expansion and evaporation. The condensation process generates heat, and the evaporation process generates cold.

[0044] The low-temperature and low-pressure refrigerant enters the compressor, and the compressor compresses it into a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0045] The throttling device expands the high-temperature and high-pressure liquid-phase refrigerant formed by condensation in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant to perform a heat exchange with the material to be cooled.

[0046] The outdoor unit of the heat pump system refers to the refrigerant cycle part, and the indoor unit of the heat pump system includes a second circulation system.

[0047] The condenser has a first pipeline and a second pipeline. The first pipeline is connected to the refrigerant cycle, and the second pipeline is connected to the second circulation system.

[0048] The second circulation system includes a second pipeline of the condenser, a pump body, a heat storage device, a heat dissipation device, a connecting pipeline, and a valve assembly.

[0049] The refrigerant system includes a first heat exchanger and a second heat exchanger, and the first heat exchanger and the second heat exchanger are used as a condenser or an evaporator. When the second heat exchanger is used as a condenser, the second heat exchanger is used as a heater in the heating state, and the second circulation system can realize the heat storage of the heat storage device and / or the heat dissipation of the heat dissipation device; when the first heat exchanger is used as an evaporator, the second heat exchanger is used as a cooler in the cooling state, and the second circulation system can realize the heat dissipation of the heat dissipation device.

[0050] In Figure 1 the example of , the heat pump system includes a first circulation loop and a second circulation loop, and the first circulation loop and the second circulation loop share a heat exchanger to realize the heat transfer between the two circulation loops.

[0051] In some embodiments, the first circulation loop is a refrigerant circulation loop.

[0052] The refrigerant circulation loop includes a compressor 4, a four-way valve 5, a first heat exchanger 1, a throttling device 3, and a second heat exchanger 6 connected in sequence.

[0053] The compressor 4 provides power for the refrigerant circulation.

[0054] The four-way valve 5 is used to realize the switching between the refrigeration and heating states of the refrigerant circulation system.

[0055] By operating the compressor 4 and reversing the four-way valve 5, the refrigeration of the first heat exchanger 1 and the heating state of the second heat exchanger 6 are realized, or the heating of the first heat exchanger 1 and the refrigeration state of the second heat exchanger 6 are realized.

[0056] The first heat exchanger 1 is a finned tube heat exchanger, and the first heat exchanger 1 exchanges heat with air through an outdoor fan 2.

[0057] The second heat exchanger 6 has a first pipeline and a second pipeline. The first pipeline is connected to the first circulation loop to generate heat or cold, and the second pipeline is connected to the second circulation loop. In the second heat exchanger 6, the second pipeline exchanges heat with the heat or cold generated by the first pipeline.

[0058] The second circulation loop includes the second pipeline of the second heat exchanger 6, a pump body 7, a heat storage device 10, a heat dissipation device, a connecting pipeline 913, and a valve assembly.

[0059] The second pipeline of the second heat exchanger 6 exchanges energy with the first pipeline to transfer the energy generated by the first circulation loop to the second circulation loop.

[0060] The pump body 7 is used to realize the energy circulation of the second circulation loop.

[0061] In some embodiments, the second circulation loop is a water circulation loop, the circulating medium of the water circulation loop is water, and the pump body 7 is used to realize the circulation of water in the water circulation loop.

[0062] In some other embodiments, the circulating medium of the second circulation loop can also be other media.

[0063] The heat storage device 10 is made of a phase change heat storage material and has the function of storing heat.

[0064] The heat storage device 10 is connected to the second pipeline of the second heat exchanger 6 to receive the heat of the second heat exchanger 6 and store it in the phase change heat storage material.

[0065] The heat storage device 10 is also connected with a cold water inlet 103 and a hot water outlet 104. The cold water of domestic water enters the heat storage device 10 through the cold water inlet 103, becomes hot water after receiving the heat of the heat storage device 10, and hot water comes out from the hot water outlet 104. The heating of domestic water can be realized through the heat storage device 10.

[0066] The domestic water enters the heat storage device 10 and exchanges heat with the phase change heat storage material, and then the hot water for use can be obtained without water storage and preheating, realizing the instant hot water function.

[0067] The heating demand of domestic water is realized through the heat storage device 10, and there is no need to set a large-volume domestic water tank. On the one hand, the occupied space of the heat pump system can be reduced, and on the other hand, the problem of water quality pollution caused by water storage in the water tank and the breeding of bacteria in the stored water can be avoided.

[0068] The heat dissipation device is connected to the second pipeline of the second heat exchanger 6 to receive the heat of the second heat exchanger 6.

[0069] The heat dissipation device includes at least one of a floor heating device 11, an air handling unit device 12 and a heating device 13.

[0070] The heat dissipation device is located on the indoor side of the heat pump system and is used for heating the indoor side.

[0071] The type and quantity of the heat dissipation device can be set according to user needs.

[0072] The communication pipeline 913 is connected to the heat storage device 10 and the heat dissipation device.

[0073] The valve assembly is used to switch the connection relationship between the heat storage device 10, the heat dissipation device and the second pipeline, so as to switch the working state of the heat pump system.

[0074] The valve assembly is used to switch to the states where the heat storage device 10 or the heat dissipation device is respectively connected to the second pipeline, the heat storage device 10 and the heat dissipation device are connected in parallel and then connected to the second pipeline, and the heat storage device 10 and the heat dissipation device are connected in series through a connecting pipeline and then connected to the second pipeline.

[0075] When the valve assembly switches to the state where the heat storage device 10 is connected to the second pipeline, the second heat exchanger 6 supplies heat to the heat storage device 10.

[0076] When the valve assembly switches to the state where the heat storage device 10 is connected to the second pipeline, the pump body 7 of the second circulation loop operates, and the heat generated by the second heat exchanger 6 is circulated to the heat storage device 10 through the second circulation loop for heat storage, realizing the heat storage function of the heat pump system.

[0077] The condition for the second heat exchanger 6 to generate heat is that the compressor 4 operates and the four-way valve 5 switches to the heating state, and the refrigerant circulation in the refrigerant circulation system causes the second heat exchanger 6 to generate heat.

[0078] When the valve assembly switches to the state where the heat dissipation device is connected to the second pipeline, the second heat exchanger 6 supplies heat to the heat dissipation device.

[0079] When the valve assembly switches to the state where the heat dissipation device is connected to the second pipeline, the pump body 7 of the second circulation loop operates, and the heat generated by the second heat exchanger 6 is circulated to the heat dissipation device through the second circulation loop for heat dissipation, realizing the heating function on the indoor side of the heat pump system.

[0080] The condition for the second heat exchanger 6 to generate heat is that the compressor 4 operates and the four-way valve 5 switches to the heating state, and the refrigerant circulation in the refrigerant circulation system causes the second heat exchanger 6 to generate heat.

[0081] When the valve assembly switches to the state where the heat storage device 10 and the heat dissipation device are connected in parallel and then connected to the second pipeline, the second heat exchanger 6 supplies heat to the heat storage device 10 and the heat dissipation device.

[0082] When the valve assembly switches to the state where the heat storage device 10 and the heat dissipation device are connected in parallel and then connected to the second pipeline, the pump body 7 of the second circulation loop operates, and the heat generated by the second heat exchanger 6 is circulated to the heat storage device 10 for heat storage and the heat dissipation device for heat dissipation through the second circulation loop, realizing the heat storage function of the heat pump system and the heating function on the indoor side.

[0083] The condition for the second heat exchanger 6 to generate heat is that the compressor 4 operates and the four-way valve 5 switches to the heating state, and the refrigerant circulation in the refrigerant circulation system causes the second heat exchanger 6 to generate heat.

[0084] When the valve assembly switches to the state where the heat storage device 10 and the heat dissipation device are connected in series through the connecting pipeline 913 and then connected to the second pipeline, the heat storage device 10 supplies heat to the heat dissipation device.

[0085] In some embodiments, when the valve assembly switches to the state where the heat storage device 10 and the heat dissipation device are connected in series through the communication pipeline 913 and then connected to the second pipeline, the compressor 4 stops, and the refrigerant circulation circuit stops operating.

[0086] When there is a heating demand on the indoor side, the compressor 4 is in a stopped state, and the second heat exchanger 6 cannot generate heat. When there is a heating demand on the indoor side, that is, when the heat dissipation device has a heat dissipation demand, the pump body 7 of the second circulation circuit operates, and the heat of the heat storage device 10 is circulated to the heat dissipation device through the second circulation circuit, and the heat dissipation device dissipates heat, realizing that the heat storage device 10 of the heat pump system supplies heat to the heat dissipation device, that is, realizing the functions of the heat storage device 10 of the heat pump system supplying heat to the indoor side and heating the indoor side.

[0087] In some embodiments, when the valve assembly switches to the state where the heat storage device 10 and the heat dissipation device are connected in series through the communication pipeline 913 and then connected to the second pipeline, the compressor 4 operates, and the four-way valve 5 switches to the refrigeration connection state.

[0088] When the first heat exchanger 1 has a defrosting demand and there is a heating demand on the indoor side, the compressor 4 operates, the four-way valve 5 switches to the refrigeration connection state, the second heat exchanger 6 serves as an evaporator, and the first heat exchanger 1 serves as a condenser, which can defrost the first heat exchanger 1. When there is a heating demand on the indoor side, that is, when the heat dissipation device has a heat dissipation demand, the pump body 7 of the second circulation circuit operates, and the heat of the heat storage device 10 is circulated to the heat dissipation device through the second circulation circuit, and the heat dissipation device dissipates heat, realizing that the heat storage device 10 of the heat pump system supplies heat to the heat dissipation device, that is, realizing the functions of the heat storage device 10 of the heat pump system supplying heat to the indoor side and heating the indoor side. At the same time, in the second heat exchanger 6, the heat of the heat storage device 10 forms a heat exchange between the second pipeline and the first pipeline in the second heat exchanger 6, improving the evaporation effect of the first pipeline, and thus, improving the condensation effect of the first heat exchanger 1 and the defrosting efficiency.

[0089] In some embodiments, the valve assembly includes: a first valve 91, a second valve 92, and a third valve 93.

[0090] The first valve 91 is respectively connected to the second interface 102 of the heat storage device 10, the second interface 9132 of the communication pipeline 913, the second interface 622 of the second pipeline, and the second interface (the left interface of the heat dissipation device in the figure) of the heat dissipation device.

[0091] The second valve 92 is respectively connected to the first interface 621 of the second pipeline, the first interface 101 of the heat storage device 10, and the third valve 93.

[0092] The third valve 93 is respectively connected to the second valve 92, the first interface (the right interface of the heat dissipation device in the figure) of the heat dissipation device, and the first interface 9131 of the communication pipeline 913.

[0093] In some embodiments, the first valve 92, the second valve 93, and the third valve 91 are all three-way valves.

[0094] Since the heat dissipation device includes a plurality of heat dissipation devices, when the heat dissipation device includes a plurality of parallel heat dissipation devices, in order to select relevant heat dissipation devices to operate according to the heating demand, a switching device is provided between the first interface (the right interface of the heat dissipation device in the figure) of the parallel heat dissipation devices and the third valve 93.

[0095] An electromagnetic valve 85 is provided between the first interface of the heating device 13 and the third valve 93.

[0096] By controlling the on / off of the electromagnetic valve 85, it is possible to control whether the heating device 13 participates in the heat cycle.

[0097] An electromagnetic valve 84 is provided between the first interface of the air handling unit 12 and the third valve 93.

[0098] By controlling the on / off of the electromagnetic valve 84, it is possible to control whether the air handling unit 12 participates in the heat cycle.

[0099] An electromagnetic valve 83 is provided between the first interface of the floor heating device 11 and the third valve 93.

[0100] By controlling the on / off of the electromagnetic valve 83, it is possible to control whether the floor heating device 11 participates in the heat cycle.

[0101] The pump body 7 is located at the first outlet 621 of the second pipeline of the second heat exchanger 6.

[0102] A two-way valve 82 is provided between the pump body 7 and the second valve 92, and a two-way valve 81 is provided between the first valve 91 and the second outlet 622 of the second pipeline of the second heat exchanger 6. The cut-off function can be achieved when the two-way valve 82 and the two-way valve 81 are closed.

[0103] In Figure 2 the example of, the heat pump system realizes the heat pump heating mode.

[0104] The compressor 4 of the refrigerant circulation circuit is started, the four-way valve 5 is switched to the heating state, the second heat exchanger 6 is a condenser, the first heat exchanger 1 is an evaporator, and the heat generated by the second heat exchanger 6 as the condenser in the refrigerant circulation circuit of the heat pump system is provided to the heat dissipation device of the second circulation circuit to achieve heat supply at the end of the heat pump.

[0105] Figure 2The dotted line circuit realizes the heat supply at the end of the heat pump. The second valve 92 connects the second heat exchanger 6 and the third valve 93. The third valve 93 connects the second valve 92 and the heat dissipation device. The first valve 91 is closed. The pump body 7 pumps the water in the second pipeline of the second heat exchanger 6 to the two-way valve 82, enters the third valve 93 through the second valve 92, and can flow through the floor heating device 11, the air handling unit 12, and the heating device 13 through the two-way valve 83, the two-way valve 84, and the two-way valve 85 respectively. The floor heating device 11, the air handling unit 12, and the heating device 13 dissipate heat. The circulating water flowing out from the floor heating device 11, the air handling unit 12, and the heating device 13 enters the second heat exchanger 6 through the two-way valve 81 to start the next cycle.

[0106] Among them, whether the floor heating device 11, the air handling unit 12, and the heating device 13 are connected to the second circulation loop can be controlled by controlling the opening and closing of the two-way valve 83, the two-way valve 84, and the two-way valve 85.

[0107] When the two-way valve 83 is turned on, the floor heating device 11 participates in the circulation of the second circulation loop; when the two-way valve 84 is turned on, the air handling unit 12 participates in the circulation of the second circulation loop; when the two-way valve 85 is turned on, the heating device 13 participates in the circulation of the second circulation loop.

[0108] In Figure 3 the example, the heat pump system realizes the heat pump heat storage mode.

[0109] The compressor 4 of the refrigerant circulation loop starts, the four-way valve 5 switches to the heating state, the second heat exchanger 6 is the condenser, and the first heat exchanger 1 is the evaporator. The heat generated by the second heat exchanger 6 as the condenser in the refrigerant circulation loop of the heat pump system provides heat for the heat storage device in the second circulation loop to realize heat storage of the heat storage device.

[0110] Figure 3 The dotted line circuit realizes the heat supply at the end of the heat pump. The second valve 92 connects the second heat exchanger 6 and the heat storage device 10. The third valve 93 is closed. The first valve 91 connects the heat storage device 10 and the second heat exchanger 6. The pump body 7 pumps the water in the second pipeline of the second heat exchanger 6 to the two-way valve 82, enters the heat storage device 10 through the second valve 92, and the heat storage device 10 stores heat. The circulating water flowing out from the heat storage device 10 enters the second heat exchanger 6 through the two-way valve 81 to start the next cycle.

[0111] In Figure 4 the example, the heat pump system realizes the heat pump heating and heat storage mode.

[0112] The compressor 4 of the refrigerant circulation circuit starts, the four-way valve 5 switches to the heating state, the second heat exchanger 6 serves as the condenser, and the first heat exchanger 1 serves as the evaporator. The heat generated by the second heat exchanger 6 (condenser) in the refrigerant circulation circuit of the heat pump system is provided to the heat storage device of the second circulation circuit to realize heat storage of the heat storage device. The heat generated by the second heat exchanger 6 (condenser) in the refrigerant circulation circuit of the heat pump system is provided to the heat dissipation device of the second circulation circuit to realize heat supply at the end of the heat pump.

[0113] Figure 4 The dotted-line circuit realizes heat supply at the end of the heat pump and heat storage of the heat storage device. The second valve 92 connects the second heat exchanger 6, the second valve 92 and the heat storage device 10. The third valve 93 connects the second valve 92 and the heat dissipation device. The first valve 91 connects the heat storage device 10, the heat dissipation device and the second heat exchanger 6.

[0114] The pump body 7 pumps the water in the second pipeline of the second heat exchanger 6 to the two-way valve 82, enters the heat storage device 10 through the second valve 92, the heat storage device 10 stores heat, and the circulating water flowing out of the heat storage device 10 enters the second heat exchanger 6 through the two-way valve 81 to start the next cycle.

[0115] The pump body 7 pumps the water in the second pipeline of the second heat exchanger 6 to the two-way valve 82, enters the third valve 93 through the second valve 92, and can flow through the floor heating device 11, the air handling unit 12 and the heating device 13 respectively through the two-way valves 83, 84 and 85. The floor heating device 11, the air handling unit 12 and the heating device 13 dissipate heat. The circulating water flowing out of the floor heating device 11, the air handling unit 12 and the heating device 13 enters the second heat exchanger 6 through the two-way valve 81 to start the next cycle.

[0116] Among them, whether the floor heating device 11, the air handling unit 12 and the heating device 13 are connected to the second circulation circuit can be controlled by controlling the opening and closing of the two-way valves 83, 84 and 85.

[0117] When the two-way valve 83 is turned on, the floor heating device 11 participates in the cycle of the second circulation circuit; when the two-way valve 84 is turned on, the air handling unit 12 participates in the cycle of the second circulation circuit; when the two-way valve 85 is turned on, the heating device 13 participates in the cycle of the second circulation circuit.

[0118] Realize that the heat pump supplies heat to both the heat dissipation device and the heat storage device simultaneously.

[0119] In Figure 5 In the example, the heat pump system realizes the heat storage, heat release and heating mode.

[0120] The compressor 4 of the refrigerant circulation circuit stops, the refrigerant circulation circuit does not work, and the heat storage device 10 supplies heat to the heat dissipation device.

[0121] Figure 5The dotted line circuit realizes the heat supply from the heat pump energy storage device to the end. The second valve 92 connects the second heat exchanger 6 and the energy storage device 10, the third valve 93 connects the pipeline 913 and the heat dissipation device, and the first valve 91 connects the energy storage device 10 and the connecting pipeline 913.

[0122] The pump body 7 pumps the water in the second pipeline of the second heat exchanger 6 to the two-way valve 82, enters the energy storage device 10 through the second valve 92, the energy storage device 10 stores heat, and the circulating water flowing out of the energy storage device 10 enters the third valve 93 through the first valve 91, and can flow through the floor heating device 11, the air handling unit 12 and the heating device 13 respectively through the two-way valve 83, the two-way valve 84 and the two-way valve 85. The floor heating device 11, the air handling unit 12 and the heating device 13 dissipate heat. The circulating water flowing out of the floor heating device 11, the air handling unit 12 and the heating device 13 enters the second heat exchanger 6 through the two-way valve 81 to start the next cycle.

[0123] Among them, whether the floor heating device 11, the air handling unit 12 and the heating device 13 are connected to the second circulation loop can be controlled by controlling the opening and closing of the two-way valve 83, the two-way valve 84 and the two-way valve 85.

[0124] When the two-way valve 83 is turned on, the floor heating device 11 participates in the circulation of the second circulation loop; when the two-way valve 84 is turned on, the air handling unit 12 participates in the circulation of the second circulation loop; when the two-way valve 85 is turned on, the heating device 13 participates in the circulation of the second circulation loop.

[0125] In Figure 6 the example, the heat pump system realizes the defrosting uninterrupted heating mode.

[0126] The compressor 4 of the refrigerant circulation loop starts, the four-way valve 5 switches to the refrigeration state, the second heat exchanger 6 is the evaporator, the first heat exchanger 1 is the condenser, and the heat generated by the first heat exchanger 1 condenser in the refrigerant circulation loop of the heat pump system is used to defrost the first heat exchanger 1.

[0127] Figure 6 The dotted line circuit realizes the heat supply from the heat pump energy storage device to the end. The second valve 92 connects the second heat exchanger 6 and the energy storage device 10, the third valve 93 connects the pipeline 913 and the heat dissipation device, and the first valve 91 connects the energy storage device 10, the connecting pipeline 913 and the second heat exchanger 6.

[0128] The pump body 7 pumps the water in the second pipeline of the second heat exchanger 6 to the two-way valve 82, and enters the heat storage device 10 through the second valve 92. The heat storage device 10 stores heat. The circulating water flowing out of the heat storage device 10 enters the third valve 93 through the first valve 91, and can flow through the floor heating device 11, the air handling unit 12 and the heating device 13 respectively through the two-way valve 83, the two-way valve 84 and the two-way valve 85. The floor heating device 11, the air handling unit 12 and the heating device 13 dissipate heat. The circulating water flowing out of the floor heating device 11, the air handling unit 12 and the heating device 13 enters the second heat exchanger 6 through the two-way valve 81 to start the next cycle, realizing the heat dissipation of the heat dissipation device.

[0129] The circulating water flowing out of the heat storage device 10 enters the second heat exchanger 6 through the first valve 91 and the two-way valve 81, heating the first pipeline of the second heat exchanger 6 to improve the evaporation capacity of the first pipeline of the second heat exchanger 6, thereby improving the condensation capacity of the first heat exchanger 1 and enhancing the defrosting efficiency of the first heat exchanger.

[0130] Among them, whether the floor heating device 11, the air handling unit 12 and the heating device 13 are connected to the second circulation loop can be controlled by controlling the opening and closing of the two-way valve 83, the two-way valve 84 and the two-way valve 85.

[0131] When the two-way valve 83 is turned on, the floor heating device 11 participates in the circulation of the second circulation loop; when the two-way valve 84 is turned on, the air handling unit 12 participates in the circulation of the second circulation loop; when the two-way valve 85 is turned on, the heating device 13 participates in the circulation of the second circulation loop.

[0132] When realizing heat pump defrosting, the heat storage device 10 supplies heat to the heat dissipation device, realizing uninterrupted heating during defrosting.

[0133] In Figure 7 's example, the heat pump system realizes the domestic water supply mode.

[0134] The cold water inlet 103 and the hot water outlet 104 of the heat storage device 10 are respectively connected to the cold water pipeline and the hot water pipeline.

[0135] Figure 7 The dotted line loop of realizes that the heat storage device provides domestic water. The cold water in the cold water pipeline enters the heat storage device 10 through the cold water inlet 103, is heated, and then discharged from the hot water outlet 104, realizing instant heating of domestic water and avoiding the problems of water quality pollution and large volume caused by setting up a water tank.

[0136] In Figure 8 's example, the cold water inlet 103 and the hot water outlet 104 of the heat storage device 10 are connected by a heat storage device connecting pipeline, and a water pump 15 is arranged on the heat storage device connecting pipeline. Through the water pump 15 to generate the circulation of water between the heat storage device 10 and the heat storage device connecting pipeline, the cold water can be circulated to heat the heat storage device 10 and then discharged from the hot water pipeline, realizing the zero cold water function.

[0137] In Figure 9 the example, a check valve 14 is provided on the connecting pipeline of the heat storage device, and the check valve 14 makes the water flow from the hot water outlet 104 to the cold water inlet 103. The check valve 14 can further ensure that the water in the cold water pipeline does not enter the hot water pipeline through the connecting pipeline of the heat storage device.

[0138] In Figure 10 the example, the heat pump system realizes the zero - cold - water domestic water supply mode.

[0139] The cold water inlet 103 and the hot water outlet 104 of the heat storage device 10 are respectively connected to the cold water pipeline and the hot water pipeline.

[0140] Figure 10 The dotted - line loop realizes the heat storage device to provide domestic water. The water pump 15 starts. Under the action of the water pump 15, the water passes through the connecting pipeline of the heat storage device and then enters the heat storage device 10 through the cold water inlet 103 together with the cold water in the cold water pipeline for heating, and then is discharged from the hot water outlet 104 to realize the zero - cold - water instant heating of domestic water, avoiding the problems of water quality pollution and large volume caused by setting up a water tank.

[0141] Among them, the water pump 15 can stop running after a set time, or a temperature detection device is set on the connecting pipeline of the heat storage device. When the detected temperature reaches the set temperature, the water pump 15 stops running to realize zero - cold - water outlet.

[0142] The heat pump system phase - change heat storage device combined with the heat pump cycle system realizes direct hot - water output without a hot - water storage tank, avoiding the problems of water quality pollution and large space occupation. At the same time, the heat pump system can realize multiple working modes such as heat pump heating mode, heat pump heat storage mode, heat pump heating and heat storage mode, heat storage heat release heating mode, defrosting uninterrupted heating mode, domestic water mode and zero - cold - water domestic water mode, etc., meeting the various heat - using demands of users.

[0143] In the description of the above - mentioned embodiments, the specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0144] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A heat pump system, comprising a heat exchanger having a first pipeline and a second pipeline, characterized in that: The system further comprises: Pump body; A heat storage device and a heat dissipation device are connected to the second pipeline, and the heat storage device is connected to a cold water inlet and a hot water outlet; A communication pipeline connected to the heat storage device and the heat dissipation device; The valve assembly is used to switch to a state in which the heat storage device or the heat dissipation device is connected to the second pipeline respectively, the heat storage device and the heat dissipation device are connected in parallel and connected to the second pipeline, and the heat storage device and the heat dissipation device are connected in series through a connecting pipeline and connected to the second pipeline.

2. The heat pump system according to claim 1, characterized in that: When the valve assembly is switched to a state where the heat storage device and the heat dissipation device are connected in series through a connecting pipeline and are connected to a second pipeline, the heat storage device supplies heat to the heat dissipation device.

3. The heat pump system according to claim 2, characterized in that: The heat pump system includes a refrigerant circulation loop, which includes a compressor, a four-way valve, a first heat exchanger, a throttling device and a second heat exchanger connected in sequence, the second heat exchanger has a first pipeline and a second pipeline, the first pipeline is connected to the refrigerant circulation loop; the compressor is stopped.

4. The heat pump system according to claim 2, characterized in that: The heat pump system includes a refrigerant circulation circuit, which includes a compressor, a four-way valve, a first heat exchanger, a throttling device and a second heat exchanger connected in sequence, the second heat exchanger has a first pipeline and a second pipeline, the first pipeline is connected to the refrigerant circulation circuit; when the compressor is running, the four-way valve is switched to a cooling connection state.

5. The heat pump system according to claim 1, characterized in that: When the valve assembly is switched to a state where the heat storage device is connected to the second pipeline, the heat exchanger supplies heat to the heat storage device; when the valve assembly is switched to a state where the heat sink is connected to the second pipeline, the heat exchanger supplies heat to the heat sink; when the valve assembly is switched to a state where the heat storage device and the heat sink are connected in parallel and connected to the second pipeline, the heat exchanger supplies heat to the heat storage device and the heat sink.

6. The heat pump system according to claim 1, characterized in that: The valve assembly comprises: The first valve is respectively connected to the second interface of the heat storage device, the second interface of the connecting pipeline, the second interface of the second pipeline and the second interface of the heat dissipation device; a second valve, connected to the first interface of the second pipeline, the first interface of the heat storage device and the third valve respectively; The third valve is respectively connected to the second valve, the first interface of the heat dissipation device and the first interface of the communication pipeline.

7. The heat pump system according to claim 6, characterized in that: The heat dissipation device includes a plurality of heat dissipation devices. When the heat dissipation device includes a plurality of heat dissipation devices connected in parallel, a switch device is provided between the first interface of the heat dissipation devices connected in parallel and the third valve.

8. The heat pump system according to claim 7, characterized in that: The heat dissipation device includes at least one of a floor heating device, a fan device and a heating device.

9. The heat pump system according to any one of claims 1 to 8, characterized in that: The cold water inlet and the hot water outlet are connected via a heat storage device connecting pipeline, and a water pump is arranged on the heat storage device connecting pipeline.

10. The heat pump system according to claim 9, characterized in that: A one-way valve is provided on the connecting pipeline of the heat storage device, and the one-way valve allows the water at the hot water outlet to flow to the cold water inlet.

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