Low-environment-temperature modularized integrated heat storage high-temperature unit

Abstract

The utility model relates to a low environment temperature modularization integrated heat storage high temperature unit which comprises a first flow path and a second flow path, the first flow path comprises a refrigerant circulation system, a heat pump system and a liquid storage device, the refrigerant circulation system is connected with the heat pump system, the refrigerant circulation system is connected with the liquid storage device, and the liquid storage device is connected with the heat pump system. A first liquid outlet end of the liquid storage device is connected with a second port of the heat pump system; the second flow path comprises a liquid inlet port and a liquid supply port, part of a pipeline of the liquid inlet port is connected with a second inlet end of the refrigerant circulation system, part of a pipeline of the liquid inlet port is connected with the first flow path, part of a pipeline of the liquid supply port is connected with a second outlet end of the refrigerant circulation system, and part of a pipeline of the liquid inlet port is connected with the first flow path; the low-environment-temperature modular integrated heat storage high-temperature unit comprises a fluid adjusting assembly used for adjusting the first flow path and the second flow path to be capable of communicating, and the fluid adjusting assembly is connected with the first flow path and the second flow path so as to improve the energy efficiency.

Description

Technical Field

[0001] The utility model relates to the field of thermal management, and more specifically to a low ambient temperature modular integrated heat storage high temperature unit. Background Art

[0002] At present, conventional heat pump units in northern heating projects generally use low-temperature air source heat pumps or water source heat pumps to directly heat buildings. Among them, low-temperature air source heat pumps use air as a heat source, absorb heat energy in the air, and work through the Carnot principle of the compressor to send outdoor heat energy to the room to solve the indoor heating problem. Its advantages are simple and convenient system and low investment. Its disadvantages are low outlet water temperature and low energy efficiency ratio, which cannot meet people's requirements for average heating energy efficiency; water source heat pumps use groundwater or ground temperature as heat pumps, absorb heat energy in the water, and work through the Carnot principle of the compressor to heat the room. The advantage is that the unit has a high energy efficiency ratio, and the average heating energy efficiency in winter is about 4. The disadvantage is that there must be heat source water, otherwise the unit cannot work normally.

[0003] Patent No. CN210292410U discloses an air source heat pump cascade system. The air source heat pump cascade system provided by the utility model, when in use, connects the water inlet of the output water pump to the water outlet of the terminal heating user equipment, connects the water outlet of the condenser of the screw unit to the water inlet of the terminal heating user equipment, starts the water replenishment system, and supplies water to the water tank. When the water in the water tank reaches a threshold, the water supply is stopped, and the circulating water pump and the output water pump are started. The whole system works, which includes two water cycles. In the above two water cycles, the air source heat pump keeps the temperature of the water in the water tank at a constant temperature when working, so that the evaporator of the first water cycle absorbs the heat of the water in the water tank as a heat source to start the unit, and there is no need to use heat source water to start the unit.

[0004] Then, with the change of seasons, the ambient temperature will also change. When a single operating mode is adopted, when the ambient temperature rises, the above solution will result in lower energy efficiency. When the ambient temperature is extremely low, the water in the water tank cannot maintain a constant temperature when the above solution is adopted, and the refrigerant circulation system still needs to provide an additional heat source. Utility Model Content

[0005] The utility model aims to provide a low ambient temperature modular integrated heat storage high temperature unit, which can be adapted to the needs of different ambient temperatures, thereby improving energy efficiency and ensuring the stable operation of the entire unit.

[0006] The utility model is realized through the following technical solutions:

[0007] A low ambient temperature modular integrated heat storage high temperature unit, comprising a first flow path and a second flow path, comprising a fluid regulating component for regulating the first flow path and the second flow path to be able to communicate, the first flow path comprising a refrigerant circulation system, a heat pump system and a liquid storage device connected in sequence, the second flow path comprising a liquid inlet port and a liquid supply port, part of the pipeline of the liquid inlet port is connected to the second inlet end of the refrigerant circulation system, part of the pipeline of the liquid inlet port is connected to the first flow path, part of the pipeline of the liquid supply port is connected to the second outlet end of the refrigerant circulation system, and part of the pipeline of the liquid inlet port is connected to the first flow path; the low ambient temperature modular integrated heat storage high temperature unit.

[0008] The specific connection path of the first flow path is: the first inlet end of the refrigerant circulation system is connected to the first port of the heat pump system, the first outlet end of the refrigerant circulation system is connected to the first liquid inlet end of the liquid reservoir, and the first liquid outlet end of the liquid reservoir is connected to the second port of the heat pump system. By switching the fluid regulating component, the flow direction of the fluid medium in the first flow path and the fluid medium in the second flow path can be changed, so that the unit can achieve multiple operation modes to cope with working conditions under different ambient temperatures, so as to improve the energy efficiency of the unit operation and ensure the stability of the unit operation. Among them, the fluid regulating component can adopt a multi-way valve, such as an eight-way valve, a nine-way valve, etc., or multiple multi-way valves, such as four three-way valves, six solenoid valves, etc. The fluid regulating component can also adopt an open and close valve, etc., but the switching of the flow path needs to be completed manually, and because the unit is integrated, there is no need for the customer to provide an additional machine room and install water pipes, which greatly reduces the workload of on-site installation.

[0009] As a preferred embodiment of the present utility model, the fluid regulating assembly includes a first multi-way valve, a second multi-way valve, a third multi-way valve and a fourth multi-way valve, the liquid inlet port is connected to the first multi-way valve, the other valve ports of the first multi-way valve are respectively connected to the second inlet end of the refrigerant circulation system and one of the valve ports of the second multi-way valve, the remaining valve ports of the second multi-way valve are connected to the first flow path, the liquid supply port is connected to the third multi-way valve, the remaining valve ports of the third multi-way valve are respectively connected to the second outlet end of the refrigerant circulation system and one of the valve ports of the fourth multi-way valve, and the remaining valve ports of the fourth multi-way valve are connected to the first flow path.

[0010] Among them, the above-mentioned first multi-way valve, second multi-way valve, third multi-way valve and fourth multi-way valve all adopt three-way valves. The first three-way valve has an inlet and two outlets, one of which is connected to the second inlet end of the refrigerant circulation system through a pipeline, and the other outlet is connected to the first flow path, and finally leads to the second port of the heat pump system. In other words, by switching the first three-way valve, the fluid medium flowing into the liquid inlet port can flow to the refrigerant circulation system or the heat pump system. Similarly, the second three-way valve has two inlets and one outlet, one of which is connected to an outlet of the first three-way valve through a pipeline, and the other inlet is connected to the first liquid outlet end of the liquid reservoir, and the outlet is connected to the second port of the heat pump system. In other words, the first The two or three-way valves can switch the fluid medium of the first flow path or the second flow path to flow to the heat pump system. The third three-way valve has two inlets and one outlet, wherein the outlet is connected to the liquid supply port, one of the inlets is connected to the second outlet end of the refrigerant circulation system, and the other inlet is connected to the outlet of the fourth three-way valve, that is, the third three-way valve can switch the liquid discharge from the refrigerant circulation system or the first flow path. The fourth three-way valve has one inlet and two outlets, one of the outlets is connected to the first inlet end of the refrigerant circulation system, and the other outlet is connected to an inlet of the third three-way valve, and the inlet is connected to the first port of the heat pump system, that is, the fourth three-way valve can switch the fluid medium flowing out of the heat pump system to flow to the first flow path and the second flow path.

[0011] As a preferred embodiment of the present invention, the low-ambient-temperature modular integrated heat storage high-temperature unit also includes a third flow path, and the third flow path includes a first pump body, a first branch and a second branch. The third outlet end of the refrigerant circulation system is connected to the second liquid inlet end of the liquid reservoir through the first branch, and the third inlet end of the refrigerant circulation system is connected to the second liquid outlet end of the liquid reservoir through the second branch.

[0012] The setting of the third flow path can achieve the waste heat recovery effect of the refrigerant circulation system to improve energy efficiency, and can also realize the reuse of energy to improve the utilization rate of energy; that is, when the ambient temperature is low, the waste heat of the refrigerant circulation system is heat exchanged with the fluid medium of the third flow path, so that the fluid medium of the third flow path stores the heat energy in the water tank for preservation, so as to provide additional heat for the low-temperature air source heat pump system; in addition, the setting of the first pump body improves the fluidity of the fluid medium of the third flow path.

[0013] As a preferred embodiment of the present invention, the refrigerant circulation system includes a fourth flow path, the fourth flow path includes a compressor, a first heat exchanger, a second heat exchanger and an expansion valve, the fourth flow path is a refrigeration circuit, and the pipelines of the compressor, the first heat exchanger, the expansion valve and the second heat exchanger are connected in sequence.

[0014] The compressor compresses the gas (refrigerant), causing the gas (refrigerant) to generate high temperature. The refrigerant passes through the first heat exchanger (condenser) for heat exchange, that is, the refrigerant flows through the condenser and exchanges heat with the fluid medium flowing through the condenser, transferring the heat energy of the refrigerant to the fluid medium. The refrigerant changes from gas to liquid. The liquid refrigerant flows through the expansion valve to adjust the flow rate of the refrigerant. After the liquid refrigerant passes through the second heat exchanger (evaporator), the liquid refrigerant evaporates into gas and returns to the compressor.

[0015] As a preferred embodiment of the present invention, the compressor is selected from a screw compressor, a centrifugal compressor, a piston compressor or a scroll compressor; the first heat exchanger is a condenser, the second heat exchanger is an evaporator, and the expansion valve is an electronic expansion valve.

[0016] As a preferred embodiment of the present invention, the first flow path also includes a second pump body, which is arranged in the first flow path and located between the first liquid outlet end of the liquid reservoir and the second port of the heat pump system to enhance the fluidity of the fluid medium in the first flow path.

[0017] As a preferred embodiment of the present invention, the heat pump system is an air source heat pump system, and the low ambient temperature modular integrated heat storage high temperature unit has a direct supply mode, a cascade mode and a waste heat recovery mode.

[0018] As a preferred embodiment of the utility model, when in direct supply mode, the liquid inlet port is connected to the second port of the air source heat pump system, and the liquid supply port is connected to the first port of the air source heat pump system; when in cascade mode, the second pump body is started, the first flow path flows to form a loop, the liquid inlet port is connected to the second inlet end of the refrigerant circulation system, and the liquid supply port is connected to the second outlet end of the refrigerant circulation system; when in waste heat recovery mode, the first pump body is started, and the third flow path exchanges heat with the refrigerant circulation system.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. By switching the fluid regulating components, the flow direction of the fluid medium in the first flow path and the fluid medium in the second flow path can be changed, so that the unit can achieve multiple operation modes to cope with working conditions under different ambient temperatures, so as to improve the energy efficiency of the unit operation and ensure the stability of the unit operation.

[0021] 2. This unit is used to realize an integrated package solution of heat pump system, refrigerant circulation system and liquid storage device. It does not require customers to provide additional machine room and install water pipes, which greatly reduces the workload of on-site installation.

[0022] 3. The setting of the third flow path can achieve the waste heat recovery effect of the refrigerant circulation system to improve energy efficiency, and can also realize the reuse of energy to improve the utilization rate of energy.

[0023] 4. A second pump body is added to enhance the fluidity of the fluid medium in the first flow path. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a system schematic diagram of a low ambient temperature modular integrated heat storage high temperature unit provided by the present application;

[0025] Figure 2 This is a first flow path connection relationship diagram of a low ambient temperature modular integrated heat storage high temperature unit provided by the present application;

[0026] Figure 3 This is a second flow path connection relationship diagram of the low ambient temperature modular integrated heat storage high temperature unit provided by the present application;

[0027] Figure 4 This is the fourth flow path connection relationship diagram of the low ambient temperature modular integrated heat storage high temperature unit provided by the present application;

[0028] Figure 5 This is a third flow path connection relationship diagram of the low ambient temperature modular integrated heat storage high temperature unit provided by the present application;

[0029] Figure 6 This application provides a direct supply mode connection diagram of a low ambient temperature modular integrated thermal storage high temperature unit;

[0030] Figure 7 This application provides a cascade mode connection diagram of a low ambient temperature modular integrated heat storage high temperature unit.

[0031] Diagram: heat pump system 1, liquid storage tank 2, first pump body 3, third flow path 4, second pump body 5, first flow path 6, first heat exchanger 7, refrigerant circulation system 8, expansion valve 9, fourth flow path 10, compressor 11, second heat exchanger 12, second flow path 13, first multi-way valve 14, third multi-way valve 15, liquid inlet port 16, liquid supply port 17, fourth multi-way valve 18, second multi-way valve 19. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0034] The utility model provides a low ambient temperature modular integrated heat storage high temperature unit, please refer to Figures 1 to 7 The low ambient temperature modular integrated heat storage high temperature unit includes a first flow path 6 and a second flow path 13. The first flow path 6 includes a refrigerant circulation system 8, a heat pump system 1 and a liquid storage tank 2, wherein the refrigerant circulation system 8 includes a fourth flow path 10, and the fourth flow path 10 includes a compressor 11, a first heat exchanger 7, a second heat exchanger 12 and an expansion valve 9. The fourth flow path 10 is a refrigeration circuit. The pipelines of the compressor 11, the first heat exchanger 7, the expansion valve 9 and the second heat exchanger 12 are connected in sequence. The refrigerant circulation system 8 can also be a water-to-water vortex heat pump system 1, wherein the compressor 11 is a refrigeration The compressor 11 is the core component of the circuit. It has an air intake port and an air exhaust port. The compressor 11 includes a compressor 11 mechanism. The air intake port sucks the gas (refrigerant) outside the compressor 11 into the compression chamber. The compressor 11 mechanism compresses the refrigerant. In other words, the compressor 11 sucks the low-temperature and low-pressure refrigerant gas and increases its temperature and pressure through compression, so that the refrigerant becomes a high-temperature and high-pressure gas and is discharged from the compressor 11. The high-temperature and high-pressure refrigerant gas discharged from the compressor 11 enters the first heat exchanger 7 for heat exchange. In this application, the first heat exchanger 7 is a condenser. The condenser can adopt a double-tube heat exchange structure, that is, one tube is used to flow through the high-temperature and high-pressure refrigerant gas, and the other tube flows through the fluid medium (water supply). When flowing through the condenser, the temperature of the fluid medium is lower than that of the high-temperature and high-pressure refrigerant gas, so that the heat energy of the refrigerant gas is transferred to the fluid medium. The temperature of the fluid medium increases and the heat energy is taken away. The refrigerant gas is converted from gas to liquid refrigerant due to the decrease in temperature. The liquid refrigerant flows into the expansion valve 9. The expansion valve 9 is a throttle valve. The expansion valve 9 throttles the liquid refrigerant and controls its flow rate, resulting in the pressure of the liquid refrigerant being increased. The temperature drops to form a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant liquid enters the second heat exchanger 12 (evaporator), and performs a second heat exchange in the second heat exchanger 12. At this time, the low-temperature and low-pressure refrigerant liquid can absorb the temperature of the fluid medium in the other tube body because its temperature is lower than that of the fluid medium in the other tube body, and evaporates, so that the liquid refrigerant turns back into a gaseous refrigerant, and then returns to the compressor 11, and the cycle repeats. The present application can use the high-temperature and high-pressure refrigerant to enter the first heat exchanger 7 for heat conduction, absorb the heat energy through the fluid medium, and then provide hot water to the user.

[0035] Among them, the compressor 11 is selected from a screw compressor 11, a centrifugal compressor 11, a piston compressor 11 or a scroll compressor 11. The screw compressor 11, that is, the compressor 11 structure adopts a screw unit, and the sucked refrigerant is compressed by the screw unit and then discharged. This application mainly takes the screw compressor 11 as an example, but does not exclude other embodiments using other modes of compressors 11. The difference between the above-mentioned compressors 11 mainly lies in the different compressor 11 structure principles of the compressor 11; the first heat exchanger 7 is a condenser, the second heat exchanger 12 is an evaporator, and the expansion valve 9 is an electronic expansion valve 9.

[0036] The first inlet end of the refrigerant circulation system 8 is connected to the first port of the heat pump system 1, the first outlet end of the refrigerant circulation system 8 is connected to the first liquid inlet end of the liquid reservoir 2, and the first liquid outlet end of the liquid reservoir 2 is connected to the second port of the heat pump system 1; the second flow path 13 includes an inlet port 16 and a liquid supply port 17, part of the pipeline of the inlet port 16 is connected to the second inlet end of the refrigerant circulation system 8, part of the pipeline of the inlet port 16 is connected to the first flow path 6, part of the pipeline of the liquid supply port 17 is connected to the second outlet end of the refrigerant circulation system 8, and part of the pipeline of the inlet port 16 is connected to the first flow path 6; the low-temperature modular integrated heat storage high-temperature unit includes a fluid regulating component for regulating the first flow path 6 and the second flow path 13 to be connected, the fluid regulating component is respectively connected to the first flow path 6 and the second flow path 13. Since the air source heat pump cascade system of the current related technology adopts a single operating mode, however, with the change of seasons, the ambient temperature will also change accordingly. When the ambient temperature rises, the The above scheme will result in low energy efficiency. When the ambient temperature is extremely low, the above scheme will not allow the water in the water tank to maintain a constant temperature, and the refrigerant circulation system 8 will still need to provide an additional heat source. Therefore, by switching the fluid regulating component, the flow direction of the fluid medium in the first flow path 6 and the fluid medium in the second flow path 13 can be changed, so that the unit can achieve multiple operating modes to cope with working conditions under different ambient temperatures, so as to improve the energy efficiency of the unit and ensure the stability of the unit. Among them, the fluid regulating component can adopt a multi-way valve, such as an eight-way valve, a nine-way valve, etc., or multiple multi-way valves, such as four three-way valves, six solenoid valves, etc. The fluid regulating component can also adopt an open and close valve, etc., but the switching of the flow path needs to be completed manually, and because the unit is integrated, there is no need for the customer to provide an additional machine room and install water pipes, which greatly reduces the workload of on-site installation. The first flow path 6 and the second flow path 13 both circulate fluid media. In this application, the fluid medium is water, and the liquid storage device 2 is a water tank.

[0037] Specifically, in the present application, the fluid regulating component includes four three-way valves, namely, a first multi-way valve 14, a second multi-way valve 19, a third multi-way valve 15 and a fourth multi-way valve 18. The first multi-way valve 14 has an inlet and two outlets, one of which is connected to the second inlet end of the refrigerant circulation system 8 through a pipeline, and the other is connected to the first flow path 6, and finally leads to the second port of the heat pump system 1. In other words, by switching the first multi-way valve 14, the fluid medium flowing into the liquid inlet port 16 can flow to the refrigerant circulation system 8 or the heat pump system 1. Similarly, the second multi-way valve 19 has two inlets and one outlet, one of which is connected to an outlet of the first multi-way valve 14 through a pipeline, and the other is connected to the first liquid outlet end of the liquid reservoir 2, and the outlet is connected to the second port of the heat pump system 1. In other words, the second multi-way valve 19 can switch the fluid medium of the first flow path 6 or the second flow path 13 to flow to the heat pump system 1, the third multi-way valve 15 has two inlets and one outlet, wherein the outlet is connected to the liquid supply port 17, one of the inlets is connected to the second outlet end of the refrigerant circulation system 8, and the other inlet is connected to the outlet of the fourth multi-way valve 18, that is, the third multi-way valve 15 can switch the liquid discharge from the refrigerant circulation system 8 or the first flow path 6, the fourth multi-way valve 18 has one inlet and two outlets, one of the outlets is connected to the first inlet end of the refrigerant circulation system 8, and the other outlet is connected to an inlet of the third multi-way valve 15, and the inlet is connected to the first port of the heat pump system 1, that is, the fourth multi-way valve 18 can switch the fluid medium flowing out of the heat pump system 1 to flow to the first flow path 6 and the second flow path 13.

[0038] It is worth mentioning that the heat pump system 1 is an air source heat pump system 1, and the low ambient temperature modular integrated heat storage high temperature unit has a direct supply mode, a cascade mode and a waste heat recovery mode; please refer to Figure 6 As shown, when the ambient temperature is high, there is no need to supplement heat energy for the heat pump system 1, so the unit is in direct supply mode, the liquid inlet port 16 is connected to the second port of the air source heat pump system 1, and the liquid supply port 17 is connected to the first port of the air source heat pump system 1. In other words, the temperature of the water directly supplied to the outside by the heat pump system 1 is sufficient to meet user needs, the refrigerant circulation system 8 is suspended (shutdown), the first pump body 3 and the second pump body 5 are not running, and the valve ports of the first multi-way valve 14, the second multi-way valve 19, the third multi-way valve 15 and the fourth multi-way valve 18 are switched, so that the fluid medium enters from the liquid inlet port 16, flows through the first multi-way valve 14 and the second multi-way valve 19, flows into the heat pump system 1 for heating, and then flows from the third multi-way valve 15 and the fourth multi-way valve 18 to the liquid supply port 17, and finally flows into the user terminal for high efficiency and energy saving.

[0039] See also Figure 7As shown, when the ambient temperature is low, the unit is in cascade mode, and the air source heat pump cannot directly meet the heating demand. By switching the three-way valve, the air source heat pump system 1 absorbs heat from the air, and provides hot water of about 25°C to the water-to-water vortex heat pump system 1 (refrigerant circulation system 8) through the second pump body 5, as the source water side heat source of the water-to-water vortex heat pump system 1, and then the water-to-water vortex heat pump system 1 provides customers with hot water above 60°C, that is, after the first flow path 6 flows through the heat pump system 1, it provides hot water of about 25°C to the refrigerant circulation system 8 as a side heat source, and after heat exchange with the first heat exchanger 7, the hot water of about 225°C can be increased to hot water above 60°C, and then output to the user terminal. In other words, the second pump body 5 is started, the first flow path 6 circulates to form a loop, the liquid inlet port 16 is connected to the second inlet end of the refrigerant circulation system 8, and the liquid supply port 17 is connected to the second outlet end of the refrigerant circulation system 8.

[0040] See also Figure 5 As shown, when the ambient temperature is lower, since the heat pump system 1 can no longer exchange heat with the air, its heat exchange capacity decreases, which also reduces the heat energy absorption of the refrigerant circulation system 8. The waste heat recovery system of the water-to-water vortex heat pump system 1 operates to provide part of the heat for the air source heat pump system 1, stabilize the water temperature on the source water side of the water-to-water vortex heat pump system 1, and enable the water-to-water vortex heat pump system 1 to operate stably. When in the waste heat recovery mode, the first pump body 3 is started, and the third flow path 4 exchanges heat with the refrigerant circulation system 8, that is, the heat energy stored in the water tank is used to compensate for the insufficient heating capacity of the air source heat pump system 1 when the ambient temperature is low, thereby ensuring the stable operation of the entire system.

[0041] In addition, in the present embodiment, the low ambient temperature modular integrated heat storage high temperature unit also includes a third flow path 4, the third flow path 4 includes a first pump body 3, a first branch and a second branch, the third outlet end of the refrigerant circulation system 8 is connected to the second liquid inlet end of the liquid reservoir 2 through the first branch, and the third inlet end of the refrigerant circulation system 8 is connected to the second liquid outlet end of the liquid reservoir 2 through the second branch. The third flow path 4 is used to absorb the heat energy of the refrigerant circulation system 8 in advance and flow it into the liquid reservoir 2 for storage, so as to prevent the ambient temperature from being extremely low, to compensate for the insufficient heating capacity of the air source heat pump system 1, and ensure the stable operation of the entire system.

[0042] In addition, in this embodiment, the low ambient temperature modular integrated heat storage high temperature unit includes a first pump body 3 and a second pump body 5. The second pump body 5 is located in the first flow path 6. In order to enhance the fluidity of the fluid medium in the first flow path 6, the first pump body 3 is located in the third flow path 4. In order to enhance the fluidity of the fluid medium in the third flow path 4, of course, if the pipeline of the first flow path 6 or the third flow path 4 is set longer, multiple pump bodies can also be arranged in the same flow path to enhance the fluidity of the fluid medium in the pipe body.

Claims

1. A low ambient temperature modular integrated heat storage high temperature unit, comprising a first flow path (6) and a second flow path (13), characterized in that , further comprising a fluid regulating component connected to the first flow path (6) and the second flow path (13), wherein the first flow path (6) comprises a refrigerant circulation system (8), a heat pump system (1) and a liquid storage device (2) connected in sequence; the second flow path (13) comprises a liquid inlet port (16) and a liquid supply port (17), wherein a portion of the pipeline of the liquid inlet port (16) is connected to a second inlet end of the refrigerant circulation system (8), a portion of the pipeline of the liquid inlet port (16) is connected to the first flow path (6), and a portion of the pipeline of the liquid supply port (17) is connected to a second outlet end of the refrigerant circulation system (8); The fluid regulating component includes a first multi-way valve (14), a second multi-way valve (19), a third multi-way valve (15) and a fourth multi-way valve (18); the liquid inlet port (16) is connected to the first multi-way valve (14); the first multi-way valve (14) is also respectively connected to the second inlet end of the refrigerant circulation system (8) and one of the valve ports of the second multi-way valve (19); the second multi-way valve (19) is also connected to the first flow path (6); the liquid supply port (17) is connected to the third multi-way valve (15); the third multi-way valve (15) is also respectively connected to the second outlet end of the refrigerant circulation system (8) and one of the valve ports of the fourth multi-way valve (18); the fourth multi-way valve (18) is also connected to the first flow path (6).

2. The low ambient temperature modular integrated heat storage high temperature unit according to claim 1 is characterized in that: The low ambient temperature modular integrated heat storage high temperature unit further comprises a third flow path (4), the third flow path (4) comprising a first pump body (3), a first branch and a second branch, the third outlet end of the refrigerant circulation system (8) is connected to the second liquid inlet end of the liquid reservoir (2) via the first branch, and the third inlet end of the refrigerant circulation system (8) is connected to the second liquid outlet end of the liquid reservoir (2) via the second branch.

3. The low ambient temperature modular integrated heat storage high temperature unit according to claim 2 is characterized in that: The refrigerant circulation system (8) includes a fourth flow path (10), and the fourth flow path (10) includes a compressor (11), a first heat exchanger (7), a second heat exchanger (12) and an expansion valve (9). The fourth flow path (10) is a refrigeration circuit, and the pipelines of the compressor (11), the first heat exchanger (7), the expansion valve (9) and the second heat exchanger (12) are connected in sequence.

4. The low ambient temperature modular integrated heat storage high temperature unit according to claim 3 is characterized in that: The compressor (11) is selected from a screw compressor, a centrifugal compressor, a piston compressor or a scroll compressor; the first heat exchanger (7) is a condenser, the second heat exchanger (12) is an evaporator, and the expansion valve (9) is an electronic expansion valve (9).

5. The low ambient temperature modular integrated heat storage high temperature unit according to claim 3 is characterized in that: The first flow path (6) further comprises a second pump body (5), wherein the second pump body (5) is located between a first liquid outlet end of the liquid reservoir (2) and a second port of the heat pump system (1).

6. The low ambient temperature modular integrated heat storage high temperature unit according to claim 5, characterized in that: The heat pump system (1) is an air source heat pump system, and the low ambient temperature modular integrated heat storage high temperature unit has a direct supply mode, a cascade mode and a waste heat recovery mode.

7. The low ambient temperature modular integrated heat storage high temperature unit according to claim 6, characterized in that: When in direct supply mode, the liquid inlet port (16) is in communication with the second port of the air source heat pump system (1), and the liquid supply port (17) is in communication with the first port of the air source heat pump system (1); When in the cascade mode, the second pump body (5) is started, the first flow path (6) circulates to form a loop, the liquid inlet port (16) is connected to the second inlet end of the refrigerant circulation system (8), and the liquid supply port (17) is connected to the second outlet end of the refrigerant circulation system (8); When in the waste heat recovery mode, the first pump body (3) is started, and the third flow path (4) exchanges heat with the refrigerant circulation system (8).

Images