Heat pump system and control method, device and computer-readable storage medium for a heat pump system

Abstract

The application relates to the technical field of heat pumps, and discloses a heat pump system, which comprises a compressor, an outdoor heat exchanger connected with the compressor, a first heat exchange branch arranged between the compressor and the outdoor heat exchanger, a first control valve and an air conditioner heat exchanger arranged on the first heat exchange branch, a second heat exchange branch arranged between the compressor and the outdoor heat exchanger, a second control valve and a floor heating capillary arranged on the second heat exchange branch, and a third heat exchange branch connected with the second control valve in parallel, wherein the third heat exchange branch flows through a heat storage water tank, and a third control valve is arranged on a third heat exchange pipeline flowing into the heat storage water tank. According to the application, the exhaust refrigerant temperature of the compressor can be reduced to a proper value by using the heat storage water tank to split the compressor to the floor heating part, so that the high-temperature exhaust refrigerant can be prevented from damaging the floor or scalding the user, and the actual use experience of the user can be ensured. The application further discloses a control method and device for the heat pump system and a computer readable storage medium.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump, for example, relates to a heat pump system and a control method, device and computer readable storage medium for the heat pump system. BACKGROUND

[0002] At present, with the improvement of people's living standards, the multi-connected system has been widely used. In daily life, air conditioning heating can meet the thermal comfort requirements of users, and with people paying more and more attention to their own comfort experience, the comfort degree of floor heating is also gradually favored by users. Therefore, the related technology proposes a floor heating and air conditioning two combined supply system, wherein the floor heating system is connected in parallel with the refrigerant pipeline of the air conditioning system.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0004] When in high load working condition, the air conditioning system requires a high exhaust temperature for heating operation. Since the floor heating system and the air conditioning system are connected in parallel in the related art, the high-temperature refrigerant discharged by the compressor will also flow directly into the floor heating system, causing the floor to form a high temperature, and thus causing the floor to be scalded. And the high floor temperature will also cause the user to be uncomfortable, thereby reducing the actual use experience of the user.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0007] The embodiments of the present disclosure provide a heat pump system and a control method, device and computer readable storage medium for the heat pump system, which can avoid high-temperature exhaust refrigerant damaging the floor or scalding the user, and is beneficial to protecting the actual use experience of the user.

[0008] In some embodiments, the heat pump system comprises: a compressor; an outdoor heat exchanger connected with the compressor; a first heat exchange branch provided between the compressor and the outdoor heat exchanger, the first heat exchange branch being provided with a first control valve and an air conditioning heat exchanger; a second heat exchange branch provided between the compressor and the outdoor heat exchanger, the second heat exchange branch being provided with a second control valve and a floor heating capillary tube; and a third heat exchange branch connected in parallel with the second control valve, the third heat exchange branch flowing through a heat storage water tank, and the third heat exchange pipeline flowing into the heat storage water tank being provided with a third control valve.

[0009] In some embodiments, the control method comprises: in the case of a heating start of the heat pump system, acquiring an indoor environment temperature and a load working condition parameter; determining a target heating mode according to the indoor environment temperature and the load working condition parameter; and controlling the heat pump system to execute the target heating mode.

[0010] In some embodiments, the control device comprises: a processor and a memory storing program instructions, the processor being configured to execute the above-mentioned control method for a heat pump system when running the program instructions.

[0011] In some embodiments, the computer-readable storage medium stores program instructions, which, when executed, cause a computer to execute the above-mentioned control method for a heat pump system.

[0012] The heat pump system and the control method, device and computer-readable storage medium for the heat pump system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0013] In the embodiments of the present disclosure, the heat pump system comprises a first heat exchange branch and a second heat exchange branch arranged in parallel, and an air conditioner heat exchanger and a floor heating capillary tube arranged on the first heat exchange branch and the second heat exchange branch respectively, and a third heat exchange branch arranged for bypassing an inlet pipeline of the floor heating capillary tube, and a control valve is arranged on each heat exchange branch. By combining the working states of the plurality of control valves, the embodiments of the present disclosure can reasonably switch the refrigerant flow path of the heat pump system to realize a plurality of heating modes such as air conditioner alone operation, floor heating alone operation, air conditioner and floor heating parallel operation, air conditioner and cooled floor heating parallel operation. Thus, the heating effects of the air conditioner part and the floor heating part corresponding to each other can be reasonably coordinated to meet the diversified needs of users in different heating processes, which is conducive to improving the overall heating experience of users. Moreover, the third heat exchange branch flows through the heat storage water tank in the embodiments of the present disclosure, so that the exhaust refrigerant temperature of the compressor branched to the floor heating part is reduced to a suitable value by the heat storage water tank, thereby avoiding damage to the floor or scalding of the user by high-temperature exhaust refrigerant, and being conducive to protecting the actual use experience of users.

[0014] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limits, and wherein:

[0016] Figure 1 is a structural schematic diagram of a heat pump system provided by the embodiments of the present disclosure;

[0017] Figure 2 is a structural schematic diagram of another heat pump system provided by an embodiment of the present disclosure;

[0018] Figure 3 is a schematic diagram of a pipeline connection of a heat pump system provided by an embodiment of the present disclosure in a first heating mode;

[0019] Figure 4 is a schematic diagram of a pipeline connection of a heat pump system provided by an embodiment of the present disclosure in a second heating mode;

[0020] Figure 5 is a schematic diagram of a pipeline connection of a heat pump system provided by an embodiment of the present disclosure in a third heating mode;

[0021] Figure 6 is a schematic diagram of a pipeline connection of a heat pump system provided by an embodiment of the present disclosure in a fourth heating mode;

[0022] Figure 7 is a schematic diagram of a pipeline connection of a heat pump system provided by an embodiment of the present disclosure in a hot water mode;

[0023] Figure 8 is a schematic diagram of a control method for a heat pump system provided by an embodiment of the present disclosure;

[0024] Figure 9 is a schematic diagram of a control device for a heat pump system provided by an embodiment of the present disclosure.

[0025] Reference signs:

[0026] 10: compressor; 20: outdoor heat exchanger; 30: air conditioner heat exchanger; 40: floor heating capillary; 50: heat storage water tank; 51: water inlet pipeline; 52: water outlet pipeline; 61: first control valve; 62: second control valve; 63: third control valve; 64: fourth control valve; 65: fifth control valve; 66: sixth control valve; 70: throttling valve; 71: first stop valve; 72: second stop valve; 73: first check valve; 74: second check valve; 80: four-way valve; 90: liquid accumulator; 100: first heat exchange branch; 200: second heat exchange branch; 300: third heat exchange branch; 400: fourth heat exchange branch; 500: fifth heat exchange branch; 600: control device for heat pump system; 601: processor; 602: memory; 603: communication interface; 604: bus. DETAILED DESCRIPTION

[0027] In order to enable more detailed understanding of the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the accompanying drawings are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0028] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0029] Unless otherwise specified, the term "a plurality of" means two or more.

[0030] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0031] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0032] The term "corresponding" can refer to an association relationship or a binding relationship. A and B correspond to each other means that A and B have an association relationship or a binding relationship.

[0033] In the embodiments of the present disclosure, when referring to the inlet pipeline and the outlet pipeline, it is corresponding to the state when the heat pump system is in the heating mode.

[0034] In combination Figures 1-2 As shown, the embodiments of the present disclosure provide a heat pump system, which comprises a compressor 10, an outdoor heat exchanger 20, a first heat exchange branch 100, a second heat exchange branch 200 and a third heat exchange branch 300. The outdoor heat exchanger 20 is connected with the compressor 10. The first heat exchange branch 100 is arranged between the compressor 10 and the outdoor heat exchanger 20, and the first heat exchange branch 100 is provided with a first control valve 61 and an air conditioner heat exchanger 30. The second heat exchange branch 200 is arranged between the compressor 10 and the outdoor heat exchanger 20, and the second heat exchange branch 200 is provided with a second control valve 62 and a floor heating capillary tube 40. The third heat exchange branch 300 is connected in parallel with the second control valve 62, the third heat exchange branch 300 flows through a heat storage water tank 50, and the third heat exchange pipeline 300 flowing into the heat storage water tank 50 is provided with a third control valve 63.

[0035] The heat pump system provided by the embodiment of the present disclosure comprises a first heat exchange branch 100 and a second heat exchange branch 200 arranged in parallel, and an air conditioner heat exchanger 30 and a floor heating capillary 40 arranged on the first heat exchange branch 100 and the second heat exchange branch 200 respectively. A third heat exchange branch 300 is arranged for bypassing the inlet pipeline of the floor heating capillary 40, and a control valve is arranged on each heat exchange branch. By combining the working states of the control valves, the embodiment of the present disclosure can reasonably switch the refrigerant flow path of the heat pump system to realize multiple heating modes such as air conditioner alone, floor heating alone, air conditioner and floor heating in parallel, air conditioner and cooled floor heating in parallel, etc. Thus, the heating effects of the air conditioner part and the floor heating part can be reasonably coordinated to meet the diversified needs of users in different heating processes, which is beneficial to improving the overall heating experience of users. Moreover, the third heat exchange branch 300 flows through the heat storage water tank 50, so that the exhaust refrigerant temperature of the compressor 10 is reduced to a suitable value by the heat storage water tank 50, thereby avoiding damage to the floor or scalding of the user, and being beneficial to protecting the actual use experience of the user.

[0036] Optionally, the heat pump system further comprises a fourth heat exchange pipeline 400. The fourth heat exchange pipeline 400 is in communication with the third heat exchange pipeline 300 flowing out of the heat storage water tank 50 at one end and in communication with the inlet pipeline of the outdoor heat exchanger 20 at the other end. A fourth control valve 64 is arranged on the fourth heat exchange branch 400, and a fifth control valve 65 is arranged on the third heat exchange pipeline 300 flowing out of the heat storage water tank 50. In this way, the fourth heat exchange pipeline 400 can be arranged for bypassing the floor heating capillary 40 to control whether the refrigerant flowing out of the heat storage water tank 50 flows through the floor heating capillary 40, which is beneficial to the heat pump system to execute a suitable operation mode.

[0037] Optionally, the heat pump system further comprises a water circulation loop. The water circulation loop flows through the heat storage water tank 50 and comprises an inlet water pipeline 51 and an outlet water pipeline 52. In this way, the water circulation loop can be arranged to realize the effective utilization of hot water in the heat storage water tank 50, which is beneficial to meeting the hot water demand of users.

[0038] Optionally, the heat pump system further comprises a fifth heat exchange pipeline 500. The fifth heat exchange pipeline 500 is in parallel with the third heat exchange pipeline 300, the fifth heat exchange branch 500 flows through the heat storage water tank 50, and a sixth control valve 66 is arranged on the fifth heat exchange pipeline 500 flowing into the heat storage water tank 50. In this way, the fifth heat exchange pipeline 500 can be arranged in parallel with the third heat exchange pipeline 300 to increase the heat exchange area with the heat storage water tank 50, which is beneficial to improving the heat exchange effect of the heat storage water tank 50, so that the temperature of the refrigerant flowing into the floor heating capillary 40 can be reduced to a suitable value, avoiding damage to the floor or scalding of the user, and being beneficial to protecting the actual use experience of the user.

[0039] Optionally, the heat pump system further comprises a throttling valve 70. The throttling valve 70 is arranged in the inlet pipeline of the outdoor heat exchanger 20. In this way, when the heat pump system operates in the heating mode, the evaporating pressure of the outdoor heat exchanger 20 can be adjusted by controlling the opening degree of the throttling valve 70, so that the refrigerant entering the outdoor heat exchanger 20 evaporates and absorbs heat at the required low pressure, thereby ensuring the heating effect of the heat pump system.

[0040] Optionally, the heat pump system further comprises a first stop valve 71 and a second stop valve 72. The first stop valve 71 is arranged in the exhaust pipeline of the compressor 10, and the second stop valve 72 is arranged in the inlet pipeline of the outdoor heat exchanger 20. In this way, by arranging the first stop valve 71 and the second stop valve 72, the gas pipe and the liquid pipe of the heat pump system can be completely closed or opened, which is beneficial to ensure the reliable operation of the heat pump system.

[0041] Optionally, the heat pump system further comprises a first check valve 73 and a second check valve 74. The first check valve 73 is arranged in the outlet pipeline of the floor heating capillary tube 40, for limiting the one-way flow of the refrigerant from the floor heating capillary tube 40 to the outdoor heat exchanger 20. The second check valve 74 is arranged in the fourth heat exchange branch 400, for limiting the one-way flow of the refrigerant from the heat storage water tank 50 to the outdoor heat exchanger 20. In this way, by arranging the first check valve 73 and the second check valve 74, the reverse flow of the refrigerant can be prevented, which is beneficial to ensure the reliable operation of the heat pump system.

[0042] Optionally, the heat pump system further comprises a four-way valve 80. The four-way valve 80 has four interfaces, which are respectively connected with the exhaust port of the compressor 10, the suction port of the compressor 10, the outdoor heat exchanger 20, and the first heat exchange branch 100 and / or the second heat exchange branch 200 and / or the third heat exchange branch 300. In this way, the heat pump system can be switched between the cooling mode and the heating mode by the four-way valve 80, so as to meet the actual needs of the user.

[0043] Optionally, the heat pump system further comprises a liquid accumulator 90. The liquid accumulator 90 is arranged in the refrigerant pipeline between the four-way valve 80 and the suction port of the compressor 10. In this way, by arranging the liquid accumulator 90 in the suction pipeline of the compressor 10, the phenomenon of liquid hammer caused by the flow of liquid refrigerant back to the compressor 10 can be avoided, which is beneficial to ensure the reliable operation of the heat pump system.

[0044] Optionally, the fourth control valve 64, the fifth control valve 65 and the sixth control valve 66 are all solenoid valves. In this way, by controlling the on-off state of the above-mentioned solenoid valves, the refrigerant flow direction in the heat pump system can be reasonably controlled.

[0045] Optionally, the first control valve 61, the second control valve 62, the third control valve 63 and the throttling valve 70 are all electronic expansion valves. In this way, by controlling the opening degree of the above-mentioned electronic expansion valves, the refrigerant flow in the pipeline can be controlled to accurately match the load demand of the heat pump system.

[0046] Optionally, in combination with Figure 3 As shown in FIG. 6, the embodiment of the present disclosure provides a pipeline connection schematic diagram of the heat pump system running in the first heating mode. Specifically, in the first heating mode, the first control valve 61 and the second control valve 62 are controlled to be opened, and the third control valve 63 is controlled to be closed. At the same time, the fourth control valve 64 and the fifth control valve 65 are controlled to be closed. In this way, the refrigerant discharged by the compressor 10 flows through the air conditioning heat exchanger 30 and the floor heating capillary tube 40 at the same time, so that the air conditioning and the floor heating can be operated in parallel. At this time, the heat pump system uses part of the refrigerant to ensure the heating effect of the air conditioning heat exchanger 30, and uses another part of the refrigerant to ensure the heating effect of the floor heating capillary tube 40, so that the heating efficiency of the heat pump system can be effectively improved, and the heating comfort of the heat pump system can be fully improved.

[0047] Optionally, in combination with Figure 4 As shown in FIG. 7, the embodiment of the present disclosure provides a pipeline connection schematic diagram of the heat pump system running in the second heating mode. Specifically, in the second heating mode, the first control valve 61 and the third control valve 63 are controlled to be opened, and the second control valve 62 is controlled to be closed. At the same time, the fourth control valve 64 is controlled to be closed, and the fifth control valve 65 is controlled to be opened. In this way, part of the refrigerant discharged by the compressor 10 directly flows through the air conditioning heat exchanger 30, and another part of the high-temperature refrigerant flows through the heat storage water tank 50 and then flows through the floor heating capillary tube 40, so that the air conditioning and the floor heating after cooling can be operated in parallel. At this time, the heat pump system uses part of the refrigerant to ensure the heating effect of the air conditioning heat exchanger 30, and uses another part of the refrigerant to ensure the heating effect of the floor heating capillary tube 40, so that the heating comfort of the heat pump system can be fully improved, and the heating efficiency of the heat pump system can be effectively improved. Moreover, the refrigerant flowing through the floor heating capillary tube 30 obtains reasonable cooling through the heat storage water tank 50, so that the high-temperature refrigerant can be prevented from damaging the floor or scalding the user, which is beneficial to ensure the actual use experience of the user.

[0048] Optionally, in combination with Figure 5As shown, the embodiment of the present disclosure provides a schematic diagram of pipeline connection of the heat pump system running the third heating mode. Specifically, in the third heating mode, the first control valve 61 is controlled to be opened, and the second control valve 62 and the third control valve 63 are controlled to be closed. At the same time, the fourth control valve 64 and the fifth control valve 65 are controlled to be closed. In this way, the refrigerant discharged by the compressor 10 only flows through the air conditioning heat exchanger 30, so that the air conditioning alone can be realized. At this time, the heat pump system uses all the exhaust refrigerant to ensure the heating effect of the air conditioning heat exchanger 20, so that the indoor temperature can be quickly raised, which is beneficial to significantly improve the heating efficiency of the heat pump system.

[0049] Optionally, in combination with the above heat pump system, the embodiment of the present disclosure provides a control device for the heat pump system. Figure 6 As shown, the embodiment of the present disclosure provides a schematic diagram of pipeline connection of the heat pump system running the fourth heating mode. Specifically, in the fourth heating mode, the second control valve 62 is controlled to be opened, and the first control valve 61 and the third control valve 63 are controlled to be closed. At the same time, the fourth control valve 64 and the fifth control valve 65 are controlled to be closed. In this way, the refrigerant discharged by the compressor 10 only flows through the floor heating capillary 40, so that the floor heating alone can be realized. At this time, the heat pump system uses all the exhaust refrigerant to ensure the heating effect of the floor heating capillary 30, so that the uniformity of the indoor temperature can be improved, which is beneficial to significantly improve the heating comfort of the heat pump system.

[0050] Optionally, in combination with the above heat pump system, the embodiment of the present disclosure provides a control device for the heat pump system. Figure 7 As shown, the embodiment of the present disclosure provides a schematic diagram of pipeline connection of the heat pump system running the hot water mode. Specifically, in the hot water mode, the third control valve 63 and the fourth control valve 64 are controlled to be opened, and the first control valve 61, the second control valve 62 and the fifth control valve 65 are controlled to be closed. In this way, the high-temperature refrigerant discharged by the compressor 10 only flows through the heat storage water tank 50 for heat exchange, so that hot water can be prepared in the heat storage water tank 50 to meet the hot water demand of the user.

[0051] Optionally, the heat pump system further comprises a control device 600 for the heat pump system. The control device 600 for the heat pump system is electrically connected with the first control valve 61, the second control valve 62, the third control valve 63, the fourth control valve 64, the fifth control valve 65 and the sixth control valve 66 respectively. In this way, the embodiment of the present disclosure can execute the corresponding control method through the control device 600, so that the heat pump system runs in the appropriate running mode.

[0052] Based on the above heat pump system, in combination with the above heat pump system, the embodiment of the present disclosure provides a control device for the heat pump system. Figure 8 As shown, the embodiment of the present disclosure provides a control method for a heat pump system, comprising:

[0053] S101, in the case of heating start of the heat pump system, the control device acquires the indoor environment temperature and the load working condition parameter.

[0054] S102, the control device determines a target heating mode according to the indoor environment temperature and the load condition parameter.

[0055] S103, the control device controls the heat pump system to execute the target heating mode.

[0056] The control method for the heat pump system provided by the embodiment of the present disclosure can analyze the current heating demand by obtaining the indoor environment temperature and the load condition parameter. Then the embodiment of the present disclosure can match the appropriate target heating mode according to the current heating demand, and reasonably switch the refrigerant flow path of the heat pump system to realize multiple heating modes such as air conditioning alone, floor heating alone, air conditioning and floor heating in parallel, air conditioning and floor heating after cooling in parallel. Thus, the heating effects of the air conditioning part and the floor heating part can be reasonably coordinated to meet the diversified needs of users in different heating processes, which is conducive to improving the overall heating experience of users.

[0057] Optionally, the control device determines the target heating mode according to the indoor environment temperature and the load condition parameter, including: in the case that the difference between the set air conditioning temperature and the indoor environment temperature is greater than a first temperature difference value, the control device determines that the target heating mode is a third heating mode; or, in the case that the difference between the set air conditioning temperature and the indoor environment temperature is less than or equal to the first temperature difference value and greater than a second temperature difference value, the control device determines the target heating mode from the first heating mode or the second heating mode according to the load condition parameter; or, in the case that the difference between the set air conditioning temperature and the indoor environment temperature is less than or equal to the second temperature difference value, the control device determines that the target heating mode is a fourth heating mode. Wherein, the first temperature difference value is greater than the second temperature difference value.

[0058] In this way, when the difference between the set air conditioning temperature and the indoor environment temperature is greater than the first temperature difference value, it indicates that the indoor temperature is relatively low at this time, and corresponding to the initial stage of the heating process, the embodiment of the present disclosure can control the heat pump system to run in the third heating mode first, so as to quickly increase the indoor temperature in the initial stage of the heating process, so as to improve the heating efficiency of the heat pump system as much as possible.

[0059] When the difference between the set air conditioning temperature and the indoor environment temperature is less than or equal to the first temperature difference value and greater than the second temperature difference value, it indicates that the indoor temperature gradually rises at this time, and corresponding to the middle stage of the heating process, the embodiment of the present disclosure can control the heat pump system to run in the first heating mode or the second heating mode, so as to reasonably coordinate the effect of fast air conditioning temperature rising speed and the effect of good floor heating temperature uniformity. Thus, the heating efficiency of the heat pump system can be effectively improved in the middle stage of the heating process, and the heating comfort of the heat pump system can be fully improved.

[0060] When the difference between the set air-conditioning temperature and the indoor environment temperature is less than or equal to the second temperature difference value, it indicates that the indoor temperature is relatively high at this time, and the disclosed embodiments can control the heat pump system to run the fourth heating mode next, so as to preferentially improve the uniformity of the indoor temperature in the later heating process, so as to improve the heating comfort of the heat pump system as much as possible.

[0061] Optionally, the first temperature difference value can be set in combination with user identity information to better protect the comfort experience of the weak constitution group. When the user identity is an adult, a relatively smaller first temperature difference value can be set to make the heat pump system run the third heating mode more; and when the user identity is a minor, a relatively larger first temperature difference value can be set to make the heat pump system run the first heating mode or the second heating mode more.

[0062] Preferably, the first temperature difference value can be set to 6℃. The first temperature difference value can also be adjusted according to the actual needs of the user, and can also be set to 5℃ or 7℃ or other arbitrary reasonable values.

[0063] Optionally, the second temperature difference value can be set in combination with user identity information to better protect the comfort experience of the weak constitution group. When the user identity is an adult, a relatively smaller second temperature difference value can be set to make the heat pump system run the first heating mode or the second heating mode more; and when the user identity is a minor, a relatively larger second temperature difference value can be set to make the heat pump system run the fourth heating mode more.

[0064] Preferably, the second temperature difference value can be set to 3℃. The second temperature difference value can also be adjusted according to the actual needs of the user, and can also be set to 2℃ or 4℃ or other arbitrary reasonable values.

[0065] Optionally, the load working condition parameter includes the discharge temperature, the discharge pressure or the operating frequency of the compressor. In this way, the disclosed embodiments can analyze the actual load working condition of the system by detecting the above-mentioned compressor parameters, so as to avoid the situation that the high-temperature refrigerant discharged by the compressor directly flows into the floor heating system under high load working conditions, causing damage to the floor or scalding the user, and is beneficial to protect the actual use experience of the user.

[0066] Optionally, the control device determines the target heating mode from the first heating mode or the second heating mode according to the load working condition parameter, including: in the case that the discharge temperature of the compressor is less than or equal to a preset discharge temperature, the control device determines that the target heating mode is the first heating mode; or in the case that the discharge temperature of the compressor is greater than the preset discharge temperature, the control device determines that the target heating mode is the second heating mode.

[0067] In this way, when the discharge temperature of the compressor is less than or equal to the preset discharge temperature, it indicates that the system is in a low load condition at this time, and the temperature of the refrigerant discharged by the compressor is relatively low, and the risk of damaging the floor or scalding the user when the refrigerant flows through the floor heating capillary is relatively low. Therefore, the embodiment of the present disclosure can control the heat pump system to directly operate in the first heating mode, so that the refrigerant discharged by the compressor directly flows into the air conditioner heat exchanger and the floor heating capillary, thereby effectively improving the heating effect of the floor heating capillary, improving the heating efficiency of the heat pump system, and further improving the heating comfort of the heat pump system.

[0068] When the discharge temperature of the compressor is greater than the preset discharge temperature, it indicates that the system is in a high load condition at this time, and the temperature of the refrigerant discharged by the compressor is relatively high, and the risk of damaging the floor or scalding the user when the refrigerant flows through the floor heating capillary is relatively high. Therefore, the embodiment of the present disclosure can control the heat pump system to operate in the second heating mode instead, so that part of the refrigerant discharged by the compressor directly flows into the air conditioner heat exchanger, and the other part of the high-temperature refrigerant flows through the heat storage water tank first and then flows through the floor heating capillary after being cooled, thereby avoiding damaging the floor or scalding the user, and being beneficial to protecting the actual use experience of the user. The embodiment of the present disclosure can also fully improve the heating efficiency of the heat pump system and improve the heating comfort of the heat pump system to a certain extent.

[0069] Optionally, the preset discharge temperature can be set according to the actual needs of the user. Preferably, the preset discharge temperature is 70℃. The preset discharge temperature can also be set to 65℃ or 75℃ or any other reasonable value.

[0070] Optionally, the control device determines the target heating mode from the first heating mode or the second heating mode according to the load condition parameter, including: in the case that the discharge pressure of the compressor is less than or equal to the preset discharge pressure, the control device determines that the target heating mode is the first heating mode; or in the case that the operating frequency of the compressor is greater than the preset discharge pressure, the control device determines that the target heating mode is the second heating mode.

[0071] In this way, when the discharge pressure of the compressor is less than or equal to the preset discharge pressure, it indicates that the system is in a low load condition at this time, and the temperature of the refrigerant discharged by the compressor is relatively low, and the risk of damaging the floor or scalding the user when the refrigerant flows through the floor heating capillary is relatively low. Therefore, the embodiment of the present disclosure can control the heat pump system to directly operate in the first heating mode, so that the refrigerant discharged by the compressor directly flows into the air conditioner heat exchanger and the floor heating capillary, thereby effectively improving the heating effect of the floor heating capillary, improving the heating efficiency of the heat pump system, and further improving the heating comfort of the heat pump system.

[0072] When the discharge pressure of the compressor is greater than the preset discharge pressure, it indicates that the system is in a high load condition at this time, and the temperature of the refrigerant discharged by the compressor is relatively high, and the risk of damaging the floor or scalding the user when the refrigerant flows through the floor heating capillary is relatively high. Therefore, the embodiment of the present disclosure can control the heat pump system to run in the second heating mode, so that part of the refrigerant discharged by the compressor directly flows into the air conditioning heat exchanger, and the other part of the high-temperature refrigerant flows through the heat storage water tank first and then flows through the floor heating capillary after being cooled, thereby avoiding the high-temperature refrigerant from damaging the floor or scalding the user, and being beneficial to protecting the actual use experience of the user. Moreover, the embodiment of the present disclosure can also fully improve the heating efficiency of the heat pump system, and can improve the heating comfort of the heat pump system to a certain extent.

[0073] Optionally, the preset discharge pressure can be set according to the actual needs of the user. Preferably, the preset discharge pressure is 3 MPa. The preset discharge pressure can also be set to 2.8 MPa or 3.2 MPa or any other reasonable value.

[0074] Optionally, the control device determines the target heating mode from the first heating mode or the second heating mode according to the load condition parameter, including: in the case that the operating frequency of the compressor is less than or equal to the preset operating frequency, the control device determines that the target heating mode is the first heating mode; or in the case that the operating frequency of the compressor is greater than the preset operating frequency, the control device determines that the target heating mode is the second heating mode.

[0075] In this way, when the operating frequency of the compressor is less than or equal to the preset operating frequency, it indicates that the system is in a low load condition at this time, and the temperature of the refrigerant discharged by the compressor is relatively low, and the risk of damaging the floor or scalding the user when the refrigerant flows through the floor heating capillary is relatively low. Therefore, the embodiment of the present disclosure can control the heat pump system to directly run in the first heating mode, so that the refrigerant discharged by the compressor directly flows into the air conditioning heat exchanger and the floor heating capillary, thereby effectively improving the heating effect of the floor heating capillary, improving the heating efficiency of the heat pump system, and further improving the heating comfort of the heat pump system.

[0076] When the operating frequency of the compressor is greater than the preset operating frequency, it indicates that the system is in a high load condition at this time, and the temperature of the refrigerant discharged by the compressor is relatively high, and the risk of damaging the floor or scalding the user when the refrigerant flows through the floor heating capillary is relatively high. Therefore, the embodiment of the present disclosure can control the heat pump system to run in the second heating mode, so that part of the refrigerant discharged by the compressor directly flows into the air conditioning heat exchanger, and the other part of the high-temperature refrigerant flows through the heat storage water tank first and then flows through the floor heating capillary after being cooled, thereby avoiding the high-temperature refrigerant from damaging the floor or scalding the user, and being beneficial to protecting the actual use experience of the user. Moreover, the embodiment of the present disclosure can also fully improve the heating efficiency of the heat pump system, and can improve the heating comfort of the heat pump system to a certain extent.

[0077] Optionally, the preset operating frequency can be set according to actual needs of the user. Preferably, the preset operating frequency is 70 Hz. The preset operating frequency can also be set to 60 Hz or 80 Hz or any other reasonable value.

[0078] Optionally, after the control device determines that the target heating mode is the second heating mode, the control device further acquires an inlet temperature of the floor heating capillary, and controls the state of the sixth control valve according to the inlet temperature of the floor heating capillary.

[0079] In this way, when the heat pump system operates in the second heating mode, the actual inlet temperature of the floor heating capillary can be further detected, and the opening and closing state of the sixth control valve can be controlled according to the actual inlet temperature of the floor heating capillary, so that the on-off state of the fifth heat exchange branch can be determined, and the heat exchange area of the heat pump system and the heat storage water tank can be reasonably adjusted, which is beneficial to ensuring that the temperature of the refrigerant flowing into the floor heating capillary can be reduced to a suitable value, and damage to the floor or scalding of the user can be avoided.

[0080] Optionally, the control device controls the state of the sixth control valve according to the inlet temperature of the floor heating capillary, including: in the case that the inlet temperature of the floor heating capillary is greater than or equal to a preset inlet temperature, the control device controls the sixth control valve to open, so as to turn on the fifth heat exchange branch; or in the case that the inlet temperature of the floor heating capillary is less than the preset inlet temperature, the control device controls the sixth control valve to close, so as to cut off the fifth heat exchange branch.

[0081] In this way, when the inlet temperature of the floor heating capillary is greater than or equal to the preset inlet temperature, there is a risk of damage to the floor or scalding of the user. Therefore, the sixth control valve can be controlled to open, so as to turn on the fifth heat exchange branch, so that the high-temperature refrigerant discharged by the compressor can flow through the heat storage water tank for heat exchange through the third heat exchange branch and the fifth heat exchange branch at the same time. Therefore, the heat exchange area of the heat storage water tank can be increased, which is beneficial to improving the heat exchange effect of the heat pump system flowing through the heat storage water tank, and thus the temperature of the refrigerant flowing into the floor heating capillary can be reduced to a suitable value, so as to avoid damage to the floor or scalding of the user.

[0082] When the inlet temperature of the floor heating capillary is less than the preset inlet temperature, there is basically no risk of damage to the floor or scalding of the user. Therefore, the sixth control valve can be controlled to close, so as to cut off the fifth heat exchange branch, so that the high-temperature refrigerant discharged by the compressor can flow through the heat storage water tank for heat exchange through the third heat exchange branch only. Therefore, the heat exchange area of the heat storage water tank can be reduced, which is beneficial to weakening the heat exchange effect of the heat pump system flowing through the heat storage water tank, and thus the heating effect of the refrigerant flowing into the floor heating capillary can be improved, so as to improve the heating comfort of the heat pump system.

[0083] Optionally, the preset import temperature can be set according to actual needs of a user. Preferably, the preset import temperature is 45℃. The preset import temperature can also be set to 40℃ or 50℃ or any other reasonable value.

[0084] In combination Figure 9 As shown in the drawings, the control device 600 for the heat pump system provided by the embodiments of the present disclosure includes a processor 601 and a memory 602. Optionally, the control device 600 can also include a communication interface 603 and a bus 604. The processor 601, the communication interface 603 and the memory 602 can communicate with each other through the bus 604. The communication interface 603 can be used for information transmission. The processor 601 can invoke the logical instructions in the memory 602 to execute the control method for the heat pump system of the above-mentioned embodiments.

[0085] In addition, when the logical instructions in the memory 602 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0086] The memory 602 as a computer-readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 601 executes the program instructions / modules stored in the memory 602, thereby performing functional applications and data processing, i.e. implementing the control method for the heat pump system in the above-mentioned embodiments.

[0087] The memory 602 can include a program storage area and a data storage area. The program storage area can store an operating system and at least one application required by a function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 602 can include a high-speed random access memory, and can also include a non-volatile memory.

[0088] The embodiments of the present disclosure provide a computer-readable storage medium, which stores computer executable instructions, and the computer executable instructions are set to execute the control method for the heat pump system.

[0089] The technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method disclosed in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0090] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural, logical, electrical, process, and other changes. The embodiments represent only a few of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. Also, the words used in this application are used only to describe the embodiments and not to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms "a," "an," and "the" are intended to include the plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listed items. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" and the like mean the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, or device that includes the stated element. In this document, each embodiment focuses on the differences from other embodiments, and the same or similar parts between embodiments can be referred to each other. For the method, product, etc. disclosed in the embodiments, if it corresponds to the method part disclosed in the embodiments, the relevant part can be referred to the description of the method part.

[0091] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to realize the described functions, but such implementation should not be considered beyond the scope of the embodiments of the present disclosure. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0092] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units can only be a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms. The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to implement the embodiments. In addition, each functional unit in the embodiments of the present disclosure can be integrated in one processing unit, or each unit can be a physically independent unit, or two or more units can be integrated in one unit.

[0093] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

Claims

1. A heat pump system, characterized by, Comprise: a compressor; an outdoor heat exchanger connected with the compressor; a first heat exchange branch provided between the compressor and the outdoor heat exchanger, the first heat exchange branch being provided with a first control valve and an air conditioner heat exchanger; a second heat exchange branch provided between the compressor and the outdoor heat exchanger, the second heat exchange branch being provided with a second control valve and a floor heating capillary tube; a third heat exchange branch connected in parallel with the second control valve, the third heat exchange branch flowing through a heat storage water tank, and the third heat exchange branch flowing into the heat storage water tank being provided with a third control valve.

2. The heat pump system of claim 1, wherein, In a first heating mode, the first control valve and the second control valve are controlled to be opened, and the third control valve is controlled to be closed.

3. The heat pump system of claim 1, wherein, In a second heating mode, the first control valve and the third control valve are controlled to be opened, and the second control valve is controlled to be closed.

4. The heat pump system of claim 1, wherein, In a third heating mode, the first control valve is controlled to be opened, and the second control valve and the third control valve are controlled to be closed.

5. The heat pump system of claim 1, wherein, In a fourth heating mode, the second control valve is controlled to be opened, and the first control valve and the third control valve are controlled to be closed.

6. The heat pump system according to any one of claims 1 to 5, characterized in that, Further comprise: a fourth heat exchange branch, one end of the fourth heat exchange branch being connected with the third heat exchange branch flowing out of the heat storage water tank, and the other end of the fourth heat exchange branch being connected with an inlet pipeline of the outdoor heat exchanger, the fourth heat exchange branch being provided with a fourth control valve, and the third heat exchange branch flowing out of the heat storage water tank being provided with a fifth control valve.

7. The heat pump system according to any one of claims 1 to 5, characterized in that, Further comprise: a fifth heat exchange branch connected in parallel with the third heat exchange branch, the fifth heat exchange branch flowing through the heat storage water tank, and the fifth heat exchange branch flowing into the heat storage water tank being provided with a sixth control valve.

8. A control method for a heat pump system, characterized by, Applied to the heat pump system according to any one of claims 1 to 7, comprising: In the case of starting heating of the heat pump system, the indoor environment temperature and the load working condition parameters are acquired; According to the indoor environment temperature and the load working condition parameters, the target heating mode is determined; The heat pump system is controlled to execute the target heating mode.

9. The control method according to claim 8, characterized by, According to the indoor environment temperature and the load working condition parameters, the target heating mode is determined, comprising: In the case that the difference between the set air conditioner temperature and the indoor environment temperature is greater than a first temperature difference value, the target heating mode is determined to be the third heating mode; or, In the case that the difference between the set air conditioner temperature and the indoor environment temperature is less than or equal to the first temperature difference value and greater than a second temperature difference value, the target heating mode is determined from the first heating mode or the second heating mode according to the load working condition parameters; or, In the case that the difference between the set air conditioner temperature and the indoor environment temperature is less than or equal to the second temperature difference value, the target heating mode is determined to be the fourth heating mode; Wherein, the first temperature difference value is greater than the second temperature difference value.

10. The control method according to claim 9, characterized by According to the load working condition parameters, the target heating mode is determined from the first heating mode or the second heating mode, comprising: In the case that the exhaust temperature of the compressor is less than or equal to a preset exhaust temperature, the target heating mode is determined to be the first heating mode; or, In the case that the exhaust temperature of the compressor is greater than the preset exhaust temperature, the target heating mode is determined to be the second heating mode.

11. A control device for a heat pump system, comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the control method for the heat pump system according to any one of claims 8 to 10 when the program instructions are executed.

12. A computer readable storage medium storing program instructions, wherein the program instructions comprise instructions for causing a computer to perform the method of any one of claims 1-11. The program instructions are used to make the computer execute the control method for the heat pump system according to any one of claims 8 to 10 when executed.

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