Heat pump system, control method for heat pump system, heat pump apparatus, and storage medium

Abstract

The invention discloses a heat pump system, a control method of the heat pump system, heat pump equipment and a storage medium. The heat pump system comprises an energy storage device and a refrigerant loop, energy storage substances are loaded in the energy storage device, the refrigerant loop comprises a compressor, a vortex tube, a first heat exchanger and a second heat exchanger, an exhaust port of the compressor is communicated with a fluid inlet of the vortex tube, the first heat exchanger is communicated with a first outlet of the vortex tube, and the second heat exchanger is communicated with a second outlet of the vortex tube. The first heat exchanger is communicated with a first outlet of the vortex tube, the second heat exchanger is communicated with a second outlet of the vortex tube, the first heat exchanger and the second heat exchanger are both in heat exchange connection with different areas of the energy storage device, the vortex tube is provided with a control valve, and the control valve is used for adjusting the first outlet temperature of the first outlet and the second outlet temperature of the second outlet. The invention aims to improve the temperature regulation efficiency of the energy storage device and ensure that the user requirements are accurately met.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump systems, and in particular to a heat pump system, a control method for a heat pump system, a heat pump device and a storage medium. Background Art

[0002] An energy storage device is generally provided in a heat pump system. The energy storage device can be loaded with energy storage materials. The cold or heat released by the heat exchanger located in the middle of the energy storage device can be stored in the energy storage material to meet the temperature regulation requirements.

[0003] At present, the energy released by the heat exchanger is generally adjusted by changing the frequency of the compressor to achieve temperature regulation of the energy storage device. However, this method has a low efficiency in regulating the temperature of the energy storage device and is difficult to meet the actual needs of users. Summary of the invention

[0004] The main purpose of the present invention is to provide a heat pump system, a control method for a heat pump system, a heat pump device and a storage medium, aiming to improve the temperature regulation efficiency of the energy storage device and ensure that user needs are accurately met.

[0005] To achieve the above object, the present invention provides a heat pump system, the heat pump system comprising:

[0006] an energy storage device, wherein an energy storage material is loaded therein; and

[0007] A refrigerant circuit, the refrigerant circuit includes a compressor, a vortex tube, a first heat exchanger and a second heat exchanger, the exhaust port of the compressor is connected to the fluid inlet of the vortex tube, the first heat exchanger is connected to the first outlet of the vortex tube, the second heat exchanger is connected to the second outlet of the vortex tube, the first heat exchanger and the second heat exchanger are both connected to different areas of the energy storage device for heat exchange, the vortex tube is provided with a control valve, and the control valve is used to adjust a first outlet temperature of the first outlet and a second outlet temperature of the second outlet.

[0008] Optionally, the control valve has a first valve position and a second valve position, the first outlet temperature and the second outlet temperature corresponding to the first valve position are both the same as the temperature of the fluid inlet, the first outlet temperature corresponding to the second valve position is greater than the temperature of the fluid inlet and the second outlet temperature is less than the temperature of the fluid inlet.

[0009] Optionally, the energy storage device includes a first area and a second area, the first area is provided with an outlet, the second area is provided with an inlet, and the first heat exchanger is connected to the first area for heat exchange.

[0010] Optionally, the first area is arranged above the second area.

[0011] In addition, in order to achieve the above purpose, the present application also proposes a control method for a heat pump system. Based on the heat pump system as described in any one of the above items, the control method for the heat pump system includes:

[0012] Acquire an operation mode of the heat pump system, wherein the operation mode indicates an energy storage demand of the energy storage device;

[0013] determining a target valve position of the control valve according to the operation mode, wherein different target valve positions correspond to different first outlet temperatures and different second outlet temperatures;

[0014] The control valve is controlled to operate at the target valve position.

[0015] Optionally, the step of determining the target valve position of the control valve according to the operation mode includes:

[0016] When the operation mode is the first mode, determining the first valve position as the target valve position so that the first outlet temperature and the second outlet temperature are both the same as the temperature of the fluid inlet;

[0017] When the operation mode is the second mode, determining the second valve position as the target valve position so that the first outlet temperature is greater than the fluid inlet temperature and the second outlet temperature is less than the fluid inlet temperature;

[0018] Among them, the heat storage rate of the energy storage device corresponding to the first mode is smaller than the heat storage rate of the energy storage device corresponding to the second mode.

[0019] Optionally, after the step of controlling the control valve to operate at the target valve position, the method further includes:

[0020] When the time duration for which the control valve operates at the target valve position is greater than or equal to a preset time duration, obtaining a first temperature of the first heat exchanger in a region corresponding to the energy storage device and a second temperature of the second heat exchanger in a region corresponding to the energy storage device;

[0021] The operating valve position of the control valve is adjusted according to the first temperature, the second temperature, and a target temperature corresponding to the operating mode.

[0022] Optionally, the refrigerant circuit further includes a third heat exchanger and a throttling device, the first heat exchanger and the second heat exchanger are both connected to one end of the throttling device, the other end of the throttling device, the third heat exchanger and the return air port of the compressor are connected in sequence, and the control method of the heat pump system further includes:

[0023] Acquiring the exhaust temperature of the compressor, the current operating valve position of the control valve, and the temperature of the energy storage device;

[0024] Determining a target opening of the throttling device according to the exhaust temperature, the operating valve position and the temperature of the energy storage device;

[0025] The throttling device is controlled to operate at the target opening.

[0026] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a heat pump system, wherein the heat pump device comprises:

[0027] A heat pump system as described in any one of the above items; and

[0028] A control device, the heat pump system is connected to the control device, the control device comprises: a memory, a processor, and a control program of the heat pump system stored in the memory and executable on the processor, the control program of the heat pump system, when executed by the processor, implements the steps of the control method of the heat pump system as described in any one of the above items.

[0029] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of a heat pump system is stored. When the control program of the heat pump system is executed by a processor, the steps of the control method of the heat pump system as described in any of the above items are implemented.

[0030] The present invention proposes a heat pump system, in which the refrigerant discharged from the compressor flows into the vortex tube and can be divided into two paths to enter the first heat exchanger and the second heat exchanger. The first heat exchanger and the second heat exchanger can be respectively connected to different areas of the energy storage device for heat exchange. The temperature of the refrigerant flowing out of the vortex tube can be adjusted by the control valve of the vortex tube, so as to realize the separate regulation of the energy storage state of the energy storage material in different areas of the energy storage device, and the response rate of the temperature change of the vortex tube outflow under the regulation of the control valve is faster, and the temperature change rate of the heat exchanger is greatly improved compared with the compressor frequency regulation, thereby effectively improving the temperature regulation efficiency of the energy storage device and ensuring that user needs are accurately met. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of the refrigerant pipeline and the refrigerant flow direction in an embodiment of the heat pump system of the present invention;

[0032] Figure 2 A schematic diagram of the hardware structure involved in the operation of a heat pump device according to an embodiment of the present invention;

[0033] Figure 3 A schematic flow chart of an embodiment of a control method for a heat pump system of the present invention;

[0034] Figure 4 A schematic flow chart of another embodiment of a control method for a heat pump system of the present invention;

[0035] Figure 5 This is a flow chart of another embodiment of the control method of the heat pump system of the present invention.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0038] The embodiment of the present invention provides a heat pump system 200 .

[0039] In the embodiment of the present invention, refer to Figure 1 , the heat pump system 200 includes an energy storage device 5 and a refrigerant circuit.

[0040] Energy storage material is loaded in the energy storage device 5. In this embodiment, the energy storage device 5 is a water tank, and the energy storage device 5 is water. In other embodiments, the energy storage device 5 can also be loaded with other types of energy storage materials, such as molten salt.

[0041] The refrigerant circuit includes a compressor 1, a vortex tube 2, a first heat exchanger 3, and a second heat exchanger 4. The exhaust port of the compressor 1 is connected to the fluid inlet of the vortex tube 2, the first heat exchanger 3 is connected to the first outlet of the vortex tube 2, the second heat exchanger 4 is connected to the second outlet of the vortex tube 2, the first heat exchanger 3 and the second heat exchanger 4 are both connected to different areas of the energy storage device 5 for heat exchange, and the vortex tube 2 is provided with a control valve 9, and the control valve 9 is used to adjust the first outlet temperature of the first outlet and the second outlet temperature of the second outlet.

[0042] In this embodiment, the control valve 9 is disposed at the first outlet of the vortex tube 2. In other embodiments, the control valve 9 may also be disposed at the second outlet of the vortex tube 2.

[0043] The control valve 9 may be a valve body controlled manually, or a valve body controlled by an electronic control module.

[0044] In this embodiment, the control valve 9 is a fluid valve with a continuously changing opening degree. In other embodiments, the control valve 9 is a fluid valve with a discontinuously changing opening degree.

[0045] The working principle of the vortex tube 2 is as follows: after the compressed air is injected into the vortex chamber of the vortex tube 2, the airflow rotates at a speed of up to one million revolutions per minute and flows to the hot air outlet of the vortex tube 2. A part of the airflow flows out through the control valve 9. After the remaining gas is blocked, it rotates in the opposite direction at the same speed in the inner circle of the original airflow and flows to the cold air end of the vortex tube 2. In this process, the two airflows exchange heat, the inner ring airflow becomes very cold and flows out from the cold air end of the vortex tube 2, and the outer ring airflow becomes very hot and flows out from the hot air end of the vortex tube 2. Low-temperature gas is generated at the cold air end for cooling purposes. The temperature and flow rate of the cold air flow can be controlled by the valve position of the control valve 9. The higher the air outlet ratio at the hot air end of the vortex tube 2, the lower the temperature of the airflow at the cold air end of the vortex tube 2, and the flow rate is reduced accordingly.

[0046] In this embodiment, the first outlet is the hot air end of the vortex tube 2, and the second outlet is the cold air end of the vortex tube 2. In other embodiments, the first outlet is the cold air end of the vortex tube 2, and the second outlet is the hot air end of the vortex tube 2.

[0047] In this embodiment, the first outlet temperature is greater than or equal to the second outlet temperature, and the second outlet temperature is less than or equal to the temperature of the fluid inlet.

[0048] The first heat exchanger 3 may be disposed inside or outside the energy storage device 5 , and the second heat exchanger 4 may be disposed inside or outside the energy storage device 5 .

[0049] The first heat exchanger 3 may be a single heat exchange module, or may include more than one heat exchange module connected in parallel. The second heat exchanger 4 may be a single heat exchange module, or may include more than one heat exchange module connected in parallel.

[0050] The first heat exchanger 3 is connected to the first area of ​​the energy storage device 5 for heat exchange, and can heat the energy storage material within the first area. The second heat exchanger 4 is connected to the second area of ​​the energy storage device 5 for heat exchange, and can heat the energy storage material within the second area. The refrigerant flowing out of the first outlet of the vortex tube 2 can flow into the first heat exchanger 3 to heat the energy storage material in the first area, and the refrigerant flowing out of the second outlet of the vortex tube 2 can flow into the second heat exchanger 4 to heat the energy storage material in the second area. It should be noted that the first area and the second area are connected areas.

[0051] In this embodiment, the first area and the second area can be arranged along the up-down direction. In other embodiments, the first area and the second area can also be arranged along the left-right direction.

[0052] In this embodiment, the refrigerant discharged from the compressor 1 in the heat pump system 200 flows into the vortex tube 2 and can be divided into two paths to enter the first heat exchanger 3 and the second heat exchanger 4. The first heat exchanger 3 and the second heat exchanger 4 can be respectively connected to different areas of the energy storage device 5 for heat exchange. The temperature of the refrigerant flowing out of the vortex tube 2 can be adjusted by the control valve 9 of the vortex tube 2, so as to achieve separate regulation of the energy storage state of the energy storage material in different areas of the energy storage device 5. The response rate of the temperature change of the vortex tube 2 under the regulation of the control valve 9 is faster, and the temperature change rate of the heat exchanger is greatly improved compared with the frequency regulation of the compressor 1, thereby effectively improving the temperature regulation efficiency of the energy storage device 5 and ensuring that the user's needs are accurately met. Among them, the energy consumption of regulating the temperature of the energy storage device 5 by the control valve 9 of the vortex tube 2 is also effectively reduced compared with the frequency regulation of the compressor 1, which effectively reduces the energy consumption of the heat pump system 200.

[0053] Furthermore, in this embodiment, the refrigerant circuit further includes a third heat exchanger 7 and a throttling device 6, the first heat exchanger 3 and the second heat exchanger 4 are both connected to one end of the throttling device 6, and the other end of the throttling device 6, the third heat exchanger 7 and the return air port of the compressor 1 are sequentially connected. The refrigerant discharged from the compressor 1 flows through the first heat exchanger 3 and the second heat exchanger 4, and can be throttled and depressurized by the throttling device 6 in sequence, evaporated by the third heat exchanger 7, and then flow back to the compressor 1.

[0054] Further, in one embodiment, the control valve 9 has a first valve position and a second valve position, the first outlet temperature and the second outlet temperature corresponding to the first valve position are both the same as the temperature of the fluid inlet, the first outlet temperature corresponding to the second valve position is greater than the temperature of the fluid inlet and the second outlet temperature is less than the temperature of the fluid inlet.

[0055] When the control valve 9 operates at the first valve position, the overall heat corresponding to the first heat exchanger 3 and the second heat exchanger 4 is less than the overall heat corresponding to the first heat exchanger 3 and the second heat exchanger 4 when the control valve 9 operates at the second valve position.

[0056] It should be noted that no matter how the valve position of the control valve 9 changes, the first outlet temperature and the second outlet temperature are both greater than the temperature of the energy storage material in the energy storage device 5 at normal temperature. That is to say, no matter how the valve position of the control valve 9 changes, the first heat exchanger 3 and the second heat exchanger 4 can release heat to heat the energy storage material in the corresponding area of ​​the energy storage device 5.

[0057] In this embodiment, when the control valve 9 is operated in the first valve position, the first heat exchanger 3 and the second heat exchanger 4 can respectively heat different areas of the energy storage device 5 slowly and evenly, and when the control valve 9 is operated in the second valve position, the first heat exchanger 3 and the second heat exchanger 4 can achieve rapid heating of the energy storage device 5 as a whole, especially the temperature of the energy storage material in the area corresponding to the first heat exchanger 3 can be rapidly increased. Based on this, the heat pump system 200 can adapt to different energy requirements of the energy storage device 5 to achieve rapid adjustment, thereby further ensuring that the energy storage efficiency of the energy storage device 5 can be accurately matched with actual requirements.

[0058] Furthermore, the control valve 9 may have other valve positions besides the first valve position and the second valve position.

[0059] Further, in one embodiment, referring to Figure 1 The energy storage device 5 includes a first area and a second area, the first area is provided with an outlet, the second area is provided with an inlet, and the first heat exchanger 3 is connected to the first area for heat exchange.

[0060] The first area and the second area are connected areas, and the energy storage material can enter the energy storage device 5 from the inlet of the energy storage device 5, and can be discharged from the energy storage device 5 through the outlet of the energy storage device 5 after being heated by the first heat exchanger 3 and the second heat exchanger 4. While the outlet of the energy storage device 5 discharges the energy storage material, the inlet of the energy storage device 5 can be replenished with new energy storage material.

[0061] In this embodiment, through the above-mentioned setting, when the first outlet temperature is greater than the second outlet temperature under the regulation of the control valve 9 (for example, when the control valve 9 operates in the above-mentioned second valve position), the energy storage material in the first area can be quickly heated, and the energy storage material that meets the user's heat demand can be quickly discharged through the discharge port, thereby reducing the temperature fluctuation of the energy storage material when the user continues to use the heat of the energy storage material.

[0062] In other embodiments, the inlet and outlet of the energy storage device 5 may also be disposed in the first area.

[0063] Further, in one embodiment, referring to Figure 1 , the first area is arranged above the second area.

[0064] In this embodiment, through the above-mentioned setting, when the first outlet temperature is greater than the second outlet temperature under the regulation of the control valve 9 (for example, when the control valve 9 operates in the above-mentioned second valve position), the temperature of the energy storage material in the first region is higher than the temperature of the energy storage material in the second region. Based on the temperature stratification effect, the temperature of the energy storage material in the outlet region may be higher, further reducing the temperature fluctuation of the energy storage material when the user continues to use the heat of the energy storage material.

[0065] Furthermore, an embodiment of the present invention also provides a heat pump device.

[0066] In the embodiment of the present invention, refer to Figure 2 The heat pump device includes a control device 100 and a heat pump system 200 connected to the control device 100. The control valve 9, the throttling device 6 and the compressor 1 in the heat pump system 200 can be connected to the control device 100, and the control device 100 can control the operation of the above components.

[0067] The control device 100 includes: a processor 1001, such as a CPU, a memory 1002, and a timer 1003. These components are connected and communicated via a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0068] Those skilled in the art will understand that Figure 2 The device structure shown in the figure does not constitute a limitation of the device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0069] like Figure 2 As shown, the memory 1002 as a computer storage medium may include a control program of the heat pump system 200 .

[0070] exist Figure 2 In the device shown, the processor 1001 can be used to call the control program of the heat pump system 200 stored in the memory 1002, and execute the relevant step operations of the control method of the heat pump system 200 in the following embodiment.

[0071] An embodiment of the present invention further provides a control method for a heat pump system, which is applied to the above-mentioned heat pump system.

[0072] Reference Figure 3 , an embodiment of a control method of a heat pump system of the present application is proposed. In this embodiment, the control method of the heat pump system includes:

[0073] Step S10, obtaining an operation mode of the heat pump system, wherein the operation mode indicates an energy storage demand of the energy storage device;

[0074] Different operating modes correspond to different heat storage rates and / or heat storage amounts.

[0075] The operating mode of the heat pump system can be determined according to the instructions input by the user, and can also be set according to the temperature in the energy storage device.

[0076] Step S20, determining a target valve position of the control valve according to the operation mode, wherein different target valve positions correspond to different first outlet temperatures and different second outlet temperatures;

[0077] Different operation modes correspond to different target valve positions of the control valve, and the relationship (ratio or difference) between the first outlet temperature and the second outlet temperature corresponding to different target valve positions is different.

[0078] The correspondence between the operating mode and the target valve position can be set based on different energy storage requirements, and the target valve position corresponding to the current operating mode can be determined based on the correspondence.

[0079] Among them, the target valve position corresponding to any operating mode can be a fixed valve position, or a valve position determined according to the actual use of the heat pump system. For example, different operating modes can correspond to different preset valve position ranges, and the target valve position can be determined within the preset valve position range corresponding to the operating mode according to the current temperature of the energy storage device, the target temperature of the energy storage device and the outdoor ambient temperature.

[0080] Step S30, controlling the control valve to operate at the target valve position.

[0081] A control method for a heat pump system proposed in an embodiment of the present invention is adapted to adjust the valve position of a control valve in different operating modes, so as to adjust the heat of energy storage materials in different areas of an energy storage device to adapt to actual energy demand, thereby ensuring that the temperature of the energy storage material can accurately meet user needs.

[0082] Further, based on the above embodiment, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, referring to Figure 4 , the step S20 comprises:

[0083] Step S21, when the operation mode is the first mode, determining the first valve position as the target valve position so that the first outlet temperature and the second outlet temperature are both the same as the temperature of the fluid inlet;

[0084] Step S22, when the operation mode is the second mode, determining the second valve position as the target valve position, so that the first outlet temperature is greater than the fluid inlet temperature and the second outlet temperature is less than the fluid inlet temperature;

[0085] Among them, the heat storage rate of the energy storage device corresponding to the first mode is smaller than the heat storage rate of the energy storage device corresponding to the second mode.

[0086] In this embodiment, the first mode is a conventional heat storage mode, and the second mode is a rapid heat storage mode.

[0087] It should be noted that no matter how the valve position of the control valve changes, the first outlet temperature and the second outlet temperature are both greater than the temperature of the energy storage material in the energy storage device at normal temperature. That is to say, no matter how the valve position of the control valve changes, the first heat exchanger and the second heat exchanger can release heat to heat the energy storage material in the corresponding area of ​​the energy storage device.

[0088] In this embodiment, when the control valve is operated in the first valve position, the first heat exchanger and the second heat exchanger can respectively heat different areas of the energy storage device slowly and evenly, and when the control valve is operated in the second valve position, the first heat exchanger and the second heat exchanger can quickly heat the entire energy storage device, especially the temperature of the energy storage material in the area corresponding to the first heat exchanger can be quickly increased. Based on this, the heat pump system can adapt to the different energy requirements of the energy storage device to achieve rapid adjustment, thereby further ensuring that the energy storage efficiency of the energy storage device can be accurately matched with the actual needs.

[0089] It should be noted that, in other embodiments, in addition to the first mode and the second mode, more modes may be provided, and in addition to the first valve position and the second valve position, more valve positions may be provided.

[0090] In other embodiments, different preset valve position ranges are set for the first mode and the second mode respectively, and the target valve position can be determined within the preset valve position range corresponding to the operating mode according to the current temperature of the energy storage device, the target temperature of the energy storage device and the outdoor ambient temperature.

[0091] Further, based on any of the above embodiments, another embodiment of the control method of the heat pump system of the present application is proposed. Figure 4 , after step S30, further comprising:

[0092] Step S40, when the time length of the operation of the control valve at the target valve position is greater than or equal to a preset time length, obtaining a first temperature of the first heat exchanger in a region corresponding to the energy storage device and a second temperature of the second heat exchanger in a region corresponding to the energy storage device;

[0093] The first temperature may be detected by a first temperature sensor in the first region, and the second temperature may be detected by a second temperature sensor in the second region.

[0094] Step S50: adjusting the operating valve position of the control valve according to the first temperature, the second temperature, and the target temperature corresponding to the operating mode.

[0095] The target temperature represents the energy amount of the energy storage material required by the user in the corresponding operation mode.

[0096] In this embodiment, different operating modes correspond to different target temperatures, and the target temperature corresponding to the first mode is lower than the target temperature corresponding to the second mode. In other embodiments, different operating modes may also correspond to the same target temperature.

[0097] The operating valve position of the control valve is increased or decreased or maintained unchanged according to the first temperature, the second temperature and the target temperature.

[0098] The correspondence between the first temperature, the second temperature, the target temperature and the valve position adjustment parameters can be pre-set. Based on the correspondence, the valve position adjustment parameters corresponding to the current first temperature, the second temperature and the target temperature can be determined, and the operation of the control valve can be controlled according to the valve position adjustment parameters.

[0099] In one implementation, the opening target value corresponding to the operating valve position of the control valve may be calculated using the first temperature, the second temperature, and the target temperature, and the operation of the control valve may be controlled according to the valve position corresponding to the opening target value.

[0100] In another implementation, a first temperature difference between the first temperature and the second temperature, a second temperature difference between the first temperature and the target temperature, and a third temperature difference between the second temperature and the target temperature can be determined, and the operating valve position of the control valve can be adjusted according to the first temperature difference, the second temperature difference and the third temperature difference.

[0101] In this embodiment, the above method is helpful to ensure that the energy of the energy storage material can accurately meet the user's usage needs.

[0102] Further, based on any of the above embodiments, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, the refrigerant circuit also includes a third heat exchanger and a throttling device, the first heat exchanger and the second heat exchanger are both connected to one end of the throttling device, and the other end of the throttling device, the third heat exchanger and the return air port of the compressor are connected in sequence, and the control method of the heat pump system also includes: obtaining the exhaust temperature of the compressor, the current operating valve position of the control valve and the temperature of the energy storage device; determining the target opening of the throttling device according to the exhaust temperature, the operating valve position and the temperature of the energy storage device; and controlling the throttling device to operate at the target opening.

[0103] The temperature of the energy storage device may include the first temperature and / or the second temperature, or a temperature determined by the first temperature and the second temperature.

[0104] Different exhaust temperatures, operating valve positions and temperatures of the energy storage device correspond to different target openings. The target opening can be calculated by substituting the exhaust temperature, operating valve position and temperature of the energy storage device into a formula, or by looking up a table using the exhaust temperature and operating valve position.

[0105] In this embodiment, the operation of the throttling device is controlled in the above manner to ensure that the coordination between the operation of the throttling device and the control valve is effectively improved, and the energy efficiency and reliability of the system are effectively improved while the requirements of the energy storage device are met.

[0106] In addition, an embodiment of the present invention further proposes a storage medium, on which a control program of a heat pump system is stored. When the control program of the heat pump system is executed by a processor, the relevant steps of any embodiment of the control method of the heat pump system are implemented.

[0107] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0108] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, including a number of instructions for a terminal device (which can be a mobile phone, computer, server, heat pump system, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0110] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat pump system, characterized in that: The heat pump system comprises: An energy storage device, wherein an energy storage material is loaded therein; and A refrigerant circuit, the refrigerant circuit includes a compressor, a vortex tube, a first heat exchanger and a second heat exchanger, the exhaust port of the compressor is connected to the fluid inlet of the vortex tube, the first heat exchanger is connected to the first outlet of the vortex tube, the second heat exchanger is connected to the second outlet of the vortex tube, the first heat exchanger and the second heat exchanger are both connected to different areas of the energy storage device for heat exchange, the vortex tube is provided with a control valve, and the control valve is used to adjust a first outlet temperature of the first outlet and a second outlet temperature of the second outlet.

2. The heat pump system according to claim 1, characterized in that: The control valve has a first valve position and a second valve position, the first outlet temperature and the second outlet temperature corresponding to the first valve position are both the same as the temperature of the fluid inlet, the first outlet temperature corresponding to the second valve position is greater than the temperature of the fluid inlet and the second outlet temperature is less than the temperature of the fluid inlet.

3. The heat pump system according to claim 2, characterized in that: The energy storage device comprises a first region and a second region, the first region is provided with an outlet, the second region is provided with an inlet, and the first heat exchanger is connected to the first region for heat exchange.

4. The heat pump system according to claim 3, characterized in that: The first area is arranged above the second area.

5. A control method for a heat pump system, based on the heat pump system according to any one of claims 1 to 4, characterized in that: The control method of the heat pump system comprises: Acquire an operation mode of the heat pump system, wherein the operation mode indicates an energy storage demand of the energy storage device; determining a target valve position of the control valve according to the operation mode, wherein different target valve positions correspond to different first outlet temperatures and different second outlet temperatures; The control valve is controlled to operate at the target valve position.

6. The control method of the heat pump system according to claim 5, characterized in that: The step of determining the target valve position of the control valve according to the operation mode comprises: When the operation mode is the first mode, determining the first valve position as the target valve position so that the first outlet temperature and the second outlet temperature are both the same as the temperature of the fluid inlet; When the operation mode is the second mode, determining the second valve position as the target valve position so that the first outlet temperature is greater than the fluid inlet temperature and the second outlet temperature is less than the fluid inlet temperature; Among them, the heat storage rate of the energy storage device corresponding to the first mode is smaller than the heat storage rate of the energy storage device corresponding to the second mode.

7. The control method of the heat pump system according to claim 5 or 6, characterized in that: After the step of controlling the control valve to operate at the target valve position, the method further includes: When the time duration for which the control valve operates at the target valve position is greater than or equal to a preset time duration, obtaining a first temperature of the first heat exchanger in a region corresponding to the energy storage device and a second temperature of the second heat exchanger in a region corresponding to the energy storage device; The operating valve position of the control valve is adjusted according to the first temperature, the second temperature, and a target temperature corresponding to the operating mode.

8. The control method of the heat pump system according to claim 5 or 6, characterized in that: The refrigerant circuit further includes a third heat exchanger and a throttling device, the first heat exchanger and the second heat exchanger are both connected to one end of the throttling device, and the other end of the throttling device, the third heat exchanger and the return air port of the compressor are connected in sequence, and the control method of the heat pump system further includes: Acquiring the exhaust temperature of the compressor, the current operating valve position of the control valve, and the temperature of the energy storage device; Determining a target opening of the throttling device according to the exhaust temperature, the operating valve position and the temperature of the energy storage device; The throttling device is controlled to operate at the target opening.

9. A heat pump device, characterized in that: The heat pump device comprises: A heat pump system as claimed in any one of claims 1 to 4; and A control device, the heat pump system is connected to the control device, the control device comprises: a memory, a processor, and a control program of the heat pump system stored in the memory and executable on the processor, the control program of the heat pump system, when executed by the processor, implements the steps of the control method of the heat pump system as described in any one of claims 5 to 8.

10. A storage medium, characterized in that: The storage medium stores a control program of the heat pump system, and when the control program of the heat pump system is executed by the processor, the steps of the control method of the heat pump system according to any one of claims 5 to 8 are implemented.

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