WO2023109112A1 - Energy storage and supply system based on air source heat pump - Google Patents

Abstract

The present invention relates to an energy storage and supply system based on an air source heat pump, comprising: a two-stage compressed air source heat pump module, an outdoor heat exchanger and a compression unit being provided in the two-stage compressed air source heat pump module, the compression unit being used for compressing an injected refrigerant at least twice, and the outdoor heat exchanger being connected to the compression unit for performing heat dissipation or heat absorption on the compressed refrigerant; and a display control module for adjusting and displaying a corresponding device according to data measured by a temperature measurement module. According to the present invention, when the system starts preheating, the display control module extracts a current heating time and determines a heating mode according to the current heating time, thereby effectively reducing the energy consumption of the system; moreover, when heating is formally started to reach a preset time, the display control module controls a third thermometer to measure the temperature of a phase change material in an energy storage box body and adjusts a running mode of the two-stage compressed air source heat pump module and a running mode of an electromagnetic heating module again according to the temperature of the phase change material.

Description

An energy storage system based on an air source heat pump technical field

The invention relates to the technical field of heating and cooling energy storage systems, in particular to an energy storage and supply system based on an air source heat pump.

Background technique

In order to reduce the heating pressure of the municipal heating pipe network in winter, save fossil fuel resources, meet low-carbon clean heating, and achieve the goal of "carbon neutrality and carbon peak". As an important form of clean energy, air energy can effectively reduce the operating costs of heating and cooling systems by cooperating with thermal storage devices for off-peak electricity storage.

At present, the heating mode that matches electric heating is electric heating, and the energy storage devices are water heat storage, phase change heat storage and solid heat storage. In practical applications, electric heating has a low conversion efficiency of electric energy into heat energy, which is a waste of electric energy. However, an air source heat pump can use electric energy to make heat flow from a low-level heat source to a high-level heat source. When the existing air source heat pump operates in a low temperature environment, there are problems such as a sharp decrease in heating capacity and an excessively high exhaust temperature of the compressor; at the same time, when the ambient temperature is lower than 0°C, a large area will appear on the surface of the outdoor heat exchange device. The frosting phenomenon will lead to the decrease of the heat exchange performance of the outdoor heat exchange equipment, and have a greater impact on the comprehensive heating performance of the heat pump device. For the defrosting of air source heat pumps, there are currently two hot gas defrosting methods: reverse defrosting and hot gas bypass defrosting. For the two-stage heat pump compression system, if the reverse defrosting is adopted, the pressure changes of the high-pressure stage, the middle stage and the low-pressure stage before and after the system defrosting will increase, resulting in a long period for the system to restore stable operation. The system stability of the frosting process is poor, so reverse defrosting is difficult to apply to the two-stage compression system; for the hot gas bypass defrosting, the two-stage heat pump compression heat pump system usually uses the high-pressure stage exhaust bypass defrosting, this method defrosting process Not only does it affect the indoor temperature and the thermal comfort of the human body, but the coefficient of heating performance of the system is low; at the same time, during the defrosting process, it is difficult to adjust the capacity of the high and low pressure compressors of the system reasonably. In addition, when the defrosting of the system ends, the refrigerant in the bypass circuit of the defrosting cycle flows directly from the outdoor heat exchange device into the suction port of the lower compressor. As a result, a large amount of liquid refrigerant enters the compressor, causing greater damage to the compressor. In addition, the energy storage device adopts water heat storage, which has a simple structure and low cost, and is the most suitable for traditional mining systems. However, the area required for unit heat storage is large, and the temperature distribution in the water tank is often uneven, resulting in insufficient actual heat storage and insufficient heat release. Solid heat storage utilizes the large temperature difference sensible heat of high-temperature refractory bricks, and occupies a small area, but there are many heat transfer processes that lead to low heat storage and discharge efficiency, high risk of heat storage temperature and voltage level, and high primary investment and maintenance costs. .

Contents of the invention

For this reason, the present invention provides an energy storage and supply system based on an air source heat pump to overcome the low efficiency of heat storage and discharge caused by many heat exchange processes in the prior art, and the high risk of heat storage temperature and voltage level. The problem of high input and maintenance costs.

To achieve the above purpose, the present invention provides an energy storage and supply system based on an air source heat pump, including:

The two-stage compressed air source heat pump module is equipped with an outdoor heat exchanger, a system heat exchanger and a compression unit, the compression unit is used to compress the injected refrigerant at least twice, and the outdoor heat exchanger and the compression unit Connection, used to dissipate or absorb heat from the compressed refrigerant, system heat exchanger;

An energy storage module, which is connected to the output end of the two-stage compressed air source heat pump module, and is used to store the energy generated by the two-stage compressed air source heat pump module;

An electromagnetic heating module, the electromagnetic heating module includes an electromagnetic heater, and the electromagnetic heater is connected to the heat exchanger of the system to reheat the refrigerant in the heat exchanger of the electromagnetic heating module of the system;

A temperature detection module, which includes a number of thermometers, which are respectively arranged at the input end and output end of the pipeline of the two-stage compressed air source heat pump module and the energy storage module or the input end and output end of the valve;

A display control module, used to adjust and display the corresponding device according to the data detected by the temperature detection module;

When the system starts pre-heating, the display control module extracts the current heating time and determines the heating mode according to the current heating time. If the display control module determines that the two-stage compressed air source heat pump module and the electromagnetic heating module are performing heating, The display control module controls the temperature detection module to detect the temperature of the phase change material in the energy storage module and adjusts the operation mode of the two-stage compressed air source heat pump module and the electromagnetic heating module according to the temperature of the change phase material, and when the operation mode is determined to be completed and the expected After setting the time, the display control module controls the temperature detection module to detect the energy storage module and judges whether to continue the heat exchange according to the detection result. The detection result determines whether to continue the heat exchange.

Further, the two-stage compressed air source heat pump module also includes a system heat exchanger and a high-pressure liquid storage tank, and the system heat exchanger is arranged between the two-stage compressed air source heat pump module and the energy storage module to The energy output by the energy module is used to dissipate heat or absorb heat, and the high-pressure liquid storage tank is equipped with the output end of the system heat exchanger to store or divert the refrigerant;

The energy storage module also includes an energy storage box, a coil heat exchanger, a first electric three-way valve, a second electric three-way valve, a third electric three-way valve, a system heat exchanger, a high-pressure liquid storage tank, a storage The liquid tank and the first circulation pump, wherein the energy storage tank is connected to the electromagnetic heater for storing the energy generated by the two-stage compressed air source heat pump module, and the coil heat exchanger and the electromagnetic heating tube connected to exchange heat between the output of the electromagnetic heating tube and the phase-change heat storage material in the coil heat exchanger; the first electric three-way valve is connected to the coil heat exchanger to exchange heat for the input coil The refrigerant of the heat exchanger is adjusted, the second electric three-way valve is connected with the system heat exchanger to adjust the refrigerant input into the system heat exchanger, and the third electric three-way valve is connected with the coil heat exchanger , used to adjust the refrigerant output by the coil heat exchanger, the first circulation pump and the second electric three-way valve are used to circulate the heated or cooled water, and the liquid storage tank is connected to the first electric three-way valve , used to store the refrigerant, the system heat exchanger is set at the input end of the energy storage module to dissipate or absorb the energy output by the energy storage module, and the high-pressure liquid storage tank is set at the output of the system heat exchanger terminal for storing or diverting the refrigerant;

The temperature detection module includes a first thermometer, a second thermometer, a third thermometer, a fourth thermometer, a fifth thermometer and a sixth thermometer, wherein the first temperature is set at the output end of the first electric three-way valve to detect The temperature of the material phase change heat storage material in the inner end of the coil heat exchanger, and the second thermometer, which is arranged at the input end of the coil heat exchanger, is used to detect the material phase change heat storage material in the coil heat exchanger Temperature, the third thermometer, which is arranged inside the energy storage box, is used to detect the temperature in the energy storage box, and the fourth thermometer, which is arranged at the output end of the electromagnetic heating tube, is used to detect the output end of the electromagnetic heating tube Temperature, the fifth thermometer, which is set on the output end of the terminal radiator, is used to detect the temperature of the output end of the terminal radiator, and the sixth thermometer, which is set on the outdoor heat exchanger, is used to detect the temperature of the outdoor heat exchange device temperature.

Further, the compression unit includes a first compression device and a second compression device connected in parallel, wherein one end of the first compression device is connected to the D port of the first four-way reversing valve, and the other end is connected to the outdoor reversing valve. One end of the second compression device is connected to the D port of the second four-way reversing valve, and the other end is connected to the system heat exchanger.

Further, the two-stage compressed air source heat pump module also includes an intermediate heat exchanger, a solenoid valve unit and a throttle valve unit, wherein the solenoid valve unit includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a Four solenoid valves, the fifth solenoid valve, the sixth solenoid valve and the seventh solenoid valve, the first solenoid valve is connected to the output end of the system heat exchanger to control the refrigerant output by the system heat exchange device, the second solenoid valve It is connected with the outdoor heat exchanger to control the refrigerant input by the outdoor heat exchanger, and the third solenoid valve is connected to the interface C of the first-stage four-way reversing valve to control the output of the outdoor heat exchanger. The refrigerant fluid of the outdoor heat exchanger, the fourth electromagnetic valve is connected with the first electromagnetic valve, and is used to control the refrigerant fluid output by the outdoor heat exchanger when the first electromagnetic valve stops, and the fifth electromagnetic valve is connected with the high-pressure liquid storage The tank is used to control the refrigerant fluid output by the high-pressure liquid storage tank. The sixth solenoid valve is connected to the first solenoid valve for re-controlling the refrigerant fluid passing through the first solenoid valve. The seventh solenoid valve exchanges heat with the system The device is used to control the refrigerant fluid entering and exiting the heat exchanger of the system. The throttle valve unit includes a first throttle valve, a second throttle valve and a third throttle valve, wherein the first throttle valve is connected with the first throttle valve The solenoid valve is connected to throttle and reduce the refrigerant output by the first solenoid valve, and the second throttle valve is connected to the fourth solenoid valve to throttle and reduce the refrigerant output by the fourth solenoid valve. pressure, the third throttle valve is connected to the fifth solenoid valve to throttle and reduce the pressure of the refrigerant output by the fifth solenoid valve, and the intermediate heat exchanger is connected to the third throttle valve to The refrigerant output from the throttle valve and the refrigerant output from the high-pressure liquid storage tank are heated and vaporized.

Further, the energy storage module also includes an energy storage box, a coil heat exchanger, a first electric three-way valve, a second electric three-way valve, a third electric three-way valve, a liquid storage tank, and a first circulation pump , a terminal radiator, a terminal heat exchanger and a second circulating pump, wherein the energy storage box is connected to the electromagnetic heater for storing the energy generated by the two-stage compressed air source heat pump module, and the coil The heat exchanger is connected to the electromagnetic heating tube to exchange heat between the output of the electromagnetic heating tube and the phase-change heat storage material in the coil heat exchanger. The first electric three-way valve is connected to the coil heat exchanger. It is used to adjust the refrigerant input into the coil heat exchanger. The second electric three-way valve is connected with the system heat exchanger to adjust the refrigerant input into the system heat exchanger. The third electric three-way valve It is connected with the coil heat exchanger to adjust the refrigerant output from the coil heat exchanger. The first circulation pump and the second electric three-way valve are used to circulate the heated or cooled water. The liquid storage tank and the The first electric three-way valve is connected to store the refrigerant, and the terminal heat exchanger is connected to the third electric three-way valve to exchange heat for the refrigerant output by the third electric three-way valve. The second circulating pump is connected to the terminal heat exchanger to circulate the water heated or cooled by the terminal heat exchanger, and the terminal radiator is connected to the second circulating pump to transfer excess heat from the second circulating pump.

Further, when the system starts pre-heating, the display control module extracts the current heating time T and compares T with the preset grain price time T0 in the display control module to determine the operating mode;

If T≤T0, the display control module determines that a two-stage compressed air source heat pump module and an electromagnetic heating module are used for heat supply;

If T>T0, the display control module determines to use the thermal energy stored in the energy storage module for heating.

Further, when the display control module determines that the two-stage compressed air source heat pump module and the electromagnetic heating module are used to provide heat and the heating time reaches the preset time, the display control module controls the third thermometer to detect the corresponding temperature in the energy storage box. Change the material temperature Dc and compare Dc with the preset phase change material temperature Dc0 in the display control module to determine the use mode of the two-stage compressed air source heat pump and electromagnetic heating;

When Dc<Dc0, the display control module determines that the two-stage compressed air source heat pump provides heating;

When Dc≧Dc0, the display control module determines that the two-stage compressed air source heat pump and the electromagnetic heating tube combine heating and heating.

Further, when the display control module determines that the use mode of the two-stage compressed air source heat pump and electromagnetic heating is completed and the heating is officially supplied and the heating time reaches the preset time, the display control module controls the sixth thermometer to detect the The outdoor temperature Db is compared with the preset outdoor temperature Db0 in the display control module to determine whether to defrost the outdoor heat exchange;

If Db<Db0, the display control module determines that the heat storage module needs to be controlled to defrost the outdoor heat exchange;

If Db≥Db0, the display control module determines not to defrost the outdoor heat exchange.

Further, when the display control module uses the two-stage compressed air source heat pump module to heat and supply heat for a preset duration, the display control module controls the fifth thermometer to detect the temperature Da at the output end of the terminal radiator and Da is compared with the third electric three-way valve Da0 provided in the display control module to determine whether to start the third electric three-way valve;

If Da<Da0, the display control module determines to close the third electric three-way valve to stop the heat exchange medium from entering the terminal heat exchanger;

If Da≥Da0, the display control module determines to activate the third electric three-way valve to allow the heat exchange medium to enter the terminal heat exchanger.

Further, when the display control block uses the thermal energy stored in the energy storage module to supply heat for a preset duration, the display control module controls the fifth thermometer to detect the temperature Db at the output end of the end radiator and set Db Compare with the third electric three-way valve Db0 provided in the display control module to determine whether to start the third electric three-way valve;

If Db<Db0, the display control module determines to activate the third electric three-way valve to allow the heat exchange medium to enter the terminal heat exchanger;

If Db≥Db0, the display control module determines to close the third electric three-way valve to stop the heat exchange medium from entering the terminal heat exchanger.

Compared with the prior art, the beneficial effect of the present invention is that when the system starts pre-heating, the display control module extracts the current heating time and determines the heating mode by the current heating time, which can effectively reduce the energy consumption of the system, and at the same time , when the heat supply officially starts and reaches the preset time, the display control module controls the third thermometer to detect the temperature of the phase change material in the energy storage box and adjusts the temperature of the two-stage compressed air source heat pump module and the electromagnetic heating module according to the temperature of the phase change material. Adjusting the operation mode at one time can further improve the effect of reducing the energy consumption of the system, and when the operation mode is determined and heating is completed, the display control module controls the fifth thermometer to detect the temperature at the output end of the end radiator and according to the temperature of the end radiator The temperature at the output end determines whether to stop the heat exchange at the terminal heat exchanger, thereby ensuring the reduction of energy consumption of the system and further improving the heating efficiency of the building.

Further, the present invention uses a double-stage compressed air source heat pump as the primary heat source, and electromagnetic heating as the secondary heat source to provide energy for the energy storage system and the building end, further reducing the energy consumption of the system, while using two-stage compression The combination of the air source heat pump and electromagnetic heating can increase the output temperature, expand the temperature range of the phase change heat storage material, increase the energy storage density, reduce the volume of the energy storage system, and combine the two-stage compressed air source heat pump with the phase change during heating. The combination of energy storage can achieve the function of heating in winter and cooling in summer.

Further, the present invention extracts the current heating time through the display control module during pre-heating and determines the operating mode according to the current time and the preset valley time in the display control module during pre-heating, which can effectively ensure the heating of the building. The efficiency, and then to reduce the operating cost of the system.

Further, the present invention controls the sixth thermometer to detect the outdoor temperature and compares the outdoor temperature with the preset outdoor temperature in the display control module to determine whether to defrost the outdoor heat exchange through the display control module during official heating. It can effectively ensure the continuous heating of the room during heating, and then avoid the reduction of the heat transfer performance of the outdoor heat exchanger, which leads to the reduction of the heating performance of the two-stage compressed air source heat pump module. At the same time, the present invention takes heat from the heat storage module for defrosting , can realize indoor continuous heating and defrosting operation, and the heat storage module has a simple structure and high efficiency.

Further, when the present invention provides heating through the energy storage in the heat storage module or the dual-stage compressed air source heat pump and the electromagnetic heating tube combined heating and heating, the display control module controls the fifth thermometer to detect the temperature at the output end of the end radiator and calculates the temperature according to the The temperature at the output end of the terminal radiator determines whether to stop the heat exchange at the terminal heat exchanger, thereby ensuring the reduction of energy consumption of the system and further improving the heating efficiency of the building.

Description of drawings

Fig. 1 is a schematic structural diagram of an energy storage and supply system based on an air source heat pump according to the present invention.

Detailed ways

In order to make the objects and advantages of the present invention clearer, the present invention will be further described below in conjunction with the examples; it should be understood that the specific examples described here are only for explaining the present invention, and are not intended to limit the present invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "inner", "outer" and other indicated directions or positional relationships are based on the terms shown in the accompanying drawings. The direction or positional relationship shown is only for convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Please refer to Fig. 1 which is a schematic structural diagram of an energy storage and supply system based on an air source heat pump according to the present invention, including:

The two-stage compressed air source heat pump module is equipped with an outdoor heat exchanger 17 and a compression unit, the compression unit is used to compress the injected refrigerant at least twice, and the outdoor heat exchanger 17 is connected to the compression unit for To dissipate or absorb heat from the compressed refrigerant;

An energy storage module, which is connected to the output end of the two-stage compressed air source heat pump module, and is used to store the energy generated by the two-stage compressed air source heat pump module;

The temperature detection module includes several thermometers, which are respectively arranged at the pipeline input and output ends of the two-stage compressed air source heat pump module and the energy storage module, or at the input and output ends of the valves.

The display control module 33 is used to adjust and display the corresponding device according to the data detected by the temperature detection module;

In the present invention, when the system starts pre-heating, the display control module extracts the current heating time and determines the heating mode, which can effectively reduce the energy consumption of the system. The module controls the third thermometer to detect the temperature of the phase change material in the energy storage box and adjusts the operation modes of the two-stage compressed air source heat pump module and the electromagnetic heating module at one time according to the temperature of the phase change material, which can further improve the system energy. and when the operation mode is determined and heating is performed, the display control module controls the fifth thermometer to detect the temperature at the output end of the end radiator and determines whether to stop heat exchange at the end heat exchanger according to the temperature at the output end of the end radiator , thus again ensuring the reduction of system energy consumption and further improving the efficiency of building heating.

Specifically, the two-stage compressed air source heat pump module also includes a system heat exchanger 6, and the system heat exchanger 6 is arranged between the two-stage compressed air source heat pump module and the energy storage module to The output energy is dissipated or absorbed.

Specifically, the compression unit includes a parallel first compression device and a second compression device, wherein one end of the first compression device is connected to the D port of the first four-way reversing valve, and the other end is connected to the outdoor The heat exchanger 17 is connected, one end of the second compression device is connected with the D port of the second four-way reversing valve, and the other end is connected with the system heat exchanger 6 .

Specifically, the two-stage compressed air source heat pump module further includes: a high-pressure liquid storage tank 10 , which is provided at the output end of the system heat exchanger 6 to store or divide the refrigerant.

Specifically, the two-stage compressed air source heat pump module also includes an intermediate heat exchanger 8, a solenoid valve unit and a throttle valve unit, wherein the solenoid valve unit includes a first solenoid valve 11, a second solenoid valve 16, a third solenoid valve The solenoid valve 19, the fourth solenoid valve 12, the fifth solenoid valve 9, the sixth solenoid valve 14 and the seventh solenoid valve 18, the first solenoid valve 11 is connected with the output end of the system heat exchanger 6 to control the system heat exchanger The refrigerant output by the heat device, the second solenoid valve 16 is connected to the outdoor heat exchanger 17 to control the refrigerant input by the outdoor heat exchanger 17, the third solenoid valve 19 is connected to the first-stage four-way reversing valve 20, which is used to control the refrigerant fluid output by the outdoor heat exchanger 17, and the fourth solenoid valve 12 is connected to the first solenoid valve 11, and is used to control the flow of the refrigerant when the first solenoid valve 11 stops. The refrigerant fluid output by the outdoor heat exchanger 17, the fifth electromagnetic valve 9 and the high-pressure liquid storage tank 10 are used to control the refrigerant fluid output by the high-pressure liquid storage tank 10, the sixth electromagnetic valve 14 and the first electromagnetic valve 11 connected to control the refrigerant fluid passing through the first solenoid valve 11 again, the seventh solenoid valve 18 is connected to the system heat exchanger 6, and is used to control the refrigerant fluid entering and exiting the system heat exchanger 6, and the throttle valve unit includes The first throttle valve 15, the second throttle valve 13 and the third throttle valve 7, wherein, the first throttle valve 15 is connected with the first electromagnetic valve 11, and is used to cool the output of the first electromagnetic valve 11. The second throttle valve 13 is connected to the fourth solenoid valve 12 to throttle and reduce the pressure of the refrigerant output by the fourth solenoid valve 12, and the third throttle valve 7 is connected to the fourth solenoid valve 12 to throttle and reduce the pressure. The fifth solenoid valve 9 is connected to throttling and reducing the pressure of the refrigerant output by the fifth solenoid valve 9, and the intermediate heat exchanger 8 is connected to the third throttle valve 7 to transfer the refrigerant output from the third throttle valve 7. The refrigerant and the refrigerant output from the high-pressure liquid storage tank 10 are heated and vaporized.

Specifically, the system is also provided with an electromagnetic heating module, the electromagnetic heating module includes an electromagnetic heater, and the electromagnetic heater is connected to the system heat exchanger 6 to reheat the refrigerant in the system heat exchanger 6 .

Specifically, the energy storage module further includes an energy storage box 27, a coil heat exchanger 28, a first electric three-way valve 26, a second electric three-way valve 4, a third electric three-way valve 29, a terminal cooling device 1, terminal heat exchanger 3, second circulation pump 2, liquid storage tank 25 and first circulation pump 5, wherein the energy storage tank 27 is connected with the electromagnetic heater for the two-stage compression The energy generated by the air source heat pump module is stored, and the coil heat exchanger 28 is connected to the electromagnetic heating tube 24 to exchange heat between the output of the electromagnetic heating tube 24 and the phase-change heat storage material in the coil heat exchanger 28. The first electric three-way valve 26 is connected with the coil heat exchanger 28 to adjust the refrigerant input into the coil heat exchanger 28, and the second electric three-way valve 4 is connected with the system heat exchanger 6 , used to adjust the refrigerant input into the heat exchanger 6 of the system, the third electric three-way valve 29 is connected with the coil heat exchanger 28, and used to adjust the refrigerant output from the coil heat exchanger 28, the first The circulating pump 5 and the second electric three-way valve 4 are used to circulate the heated or refrigerated water, and the liquid storage tank 25 is connected to the first electric three-way valve 26, which is used to store the refrigerant in the terminal heat exchanger 3 is connected to the third electric three-way valve 29 to exchange heat for the refrigerant output by the third electric three-way valve 29, and the second circulation pump 2 is connected to the end heat exchanger 3 to exchange heat at the end The water heated or refrigerated by the radiator 3 is circulated, and the end radiator 1 is connected with the second circulation pump 2 to transfer excess heat from the second circulation pump 2 .

Specifically, the system is also provided with a temperature detection module, and the temperature detection module includes a first thermometer 3030, a second thermometer 31, a third thermometer 32, a fourth thermometer 34, a fifth thermometer 35 and a sixth thermometer 36, wherein , the first temperature is set at the output end of the first electric three-way valve 26 to detect the temperature of the phase change heat storage material in the inner end of the coil heat exchanger 28, and the second thermometer 31 is set at the said The input end of the coil heat exchanger 28 is used to detect the temperature of the material phase change heat storage material in the coil heat exchanger 28, and the third thermometer 32 is arranged inside the energy storage box 27 to detect the temperature of the energy storage material. The temperature in the box body 27, the fourth thermometer 34, which is arranged at the output end of the electromagnetic heating tube 24, is used to detect the temperature at the output end of the electromagnetic heating tube 24, and the fifth thermometer 35, which is arranged at the output end of the end radiator 1 The end is used to detect the temperature of the output end of the end radiator 1, and the sixth thermometer 36 is set on the outdoor heat exchanger 17 and used to detect the temperature of the outdoor heat exchanger 17.

In the present invention, a double-stage compressed air source heat pump is used as the primary heat source, and electromagnetic heating is used as the secondary heat source to provide energy for the energy storage system and the end of the building, further reducing the energy consumption of the system, while using a double-stage compressed air source The combination of heat pump and electromagnetic heating can increase the output temperature, expand the temperature range of the phase change heat storage material, increase the energy storage density, reduce the volume of the energy storage system, and combine the two-stage compressed air source heat pump with the phase change energy storage phase during heating. Combined, the function of heating in winter and cooling in summer is achieved.

Specifically, when the system starts pre-heating, the display control module 33 extracts the current heating time T and compares T with the preset grain price time T0 in the display control module 33 to determine the operating mode;

If T≤T0, the display control module 33 determines to use a two-stage compressed air source heat pump module and an electromagnetic heating module for heat supply;

If T>T0, the display control module 33 determines to use the thermal energy stored in the energy storage module for heating.

Further, the present invention extracts the current heating time through the display control module 33 during pre-heating and determines the operation mode according to the current time and the preset valley price time in the display control module 33 during pre-heating, which can effectively ensure The efficiency of building heating, which in turn reduces the operating costs of the system.

Specifically, when the display control module 33 determines that the two-stage compressed air source heat pump module and the electromagnetic heating module are used to provide heat and the heating time reaches the preset time, the display control module 33 controls the third thermometer to detect the temperature of the energy storage tank. The phase change material temperature Dc in the body is compared with the preset phase change material temperature Dc0 in the display control module 33 to determine the use mode of the two-stage compressed air source heat pump and electromagnetic heating;

When Dc<Dc0, the display control module 33 determines that the two-stage compressed air source heat pump provides heating;

When Dc≧Dc0, the display control module 33 determines that the two-stage compressed air source heat pump and the electromagnetic heating tube combine heating and heating.

Specifically, when the display control module 33 determines that the use mode of the two-stage compressed air source heat pump and electromagnetic heating is completed and the formal heating is performed and the heating time reaches the preset time, the display control module 33 controls the sixth thermometer 36 Detecting the outdoor temperature Db and comparing Db with the preset outdoor temperature Db0 in the display control module 33 to determine whether to defrost the outdoor heat exchange;

If Db<Db0, the display control module 33 determines that the heat storage module needs to be controlled to defrost the outdoor heat exchange;

If Db≥Db0, the display control module 33 determines not to defrost the outdoor heat exchange.

In the present invention, the display control module 33 controls the sixth thermometer 36 to detect the outdoor temperature and compares the outdoor temperature with the preset outdoor temperature in the display control module 33 to determine whether to defrost the outdoor heat exchange during official heating. It can effectively ensure the continuous heating of the room during heating, and then avoid the reduction of the heat transfer performance of the outdoor heat exchanger, which leads to the reduction of the heating performance of the two-stage compressed air source heat pump module. At the same time, the present invention takes heat from the heat storage module for defrosting , can realize indoor continuous heating and defrosting operation, and the heat storage module has a simple structure and high efficiency.

Specifically, when the display control block uses a two-stage compressed air source heat pump module for heating and heat supply and reaches a preset duration, the display control module 33 controls the fifth thermometer 35 to detect the temperature at the output end of the terminal radiator 1. Temperature Da and comparing Da with the third electric three-way valve 29Da0 provided in the display control module 33 to determine whether to start the third electric three-way valve 29;

If Da<Da0, the display control module 33 determines to close the third electric three-way valve 29 to stop the heat exchange medium from entering the terminal heat exchanger 3;

If Da≥Da0, the display control module 33 determines to activate the third electric three-way valve 29 to allow the heat exchange medium to enter the terminal heat exchanger 3 .

Specifically, when the display control block uses the heat stored in the energy storage module to provide heat for a preset duration, the display control module 33 controls the fifth thermometer 35 to detect the temperature at the output end of the end radiator 1 Db and compare Db with the third electric three-way valve 29Db0 provided in the display control module 33 to determine whether to start the third electric three-way valve 29;

If Db<Db0, the display control module 33 determines to activate the third electric three-way valve 29 to allow the heat exchange medium to enter the terminal heat exchanger 3;

If Db≥Db0, the display control module 33 determines to close the third electric three-way valve 29 to stop the heat exchange medium from entering the terminal heat exchanger 3 .

Further, in the present invention, the display control module 33 controls the fifth thermometer 35 to detect the temperature at the output end of the end radiator 1 when the heating is officially provided by the energy storage heating in the heat storage module or the combined heating and heating of the two-stage compressed air source heat pump and the electromagnetic heating tube. temperature and judge whether to stop heat exchange at the terminal heat exchanger 3 according to the temperature at the output end of the terminal radiator 1, thereby ensuring that the energy consumption of the system is reduced and further improving the heating efficiency of the building.

The inorganic phase change material that the present invention adopts comprises sodium acetate trihydrate and the composite phase change material based on sodium acetate trihydrate, magnesium nitrate heptahydrate and the composite phase change material based on magnesium nitrate heptahydrate, barium hydroxide octahydrate and based on octahydrate Composite phase change materials of barium hydroxide, potassium aluminum sulfate dodecahydrate and composite phase change materials based on potassium aluminum sulfate dodecahydrate, ammonium aluminum sulfate dodecahydrate and composite phase change materials based on ammonium aluminum sulfate dodecahydrate, heptahydrate Magnesium chloride and composite phase change materials based on magnesium chloride heptahydrate;

Organic phase change materials include: paraffin wax with a melting temperature of 50°C-80°C, polyethylene glycol 1500, polyethylene glycol 2000, polyethylene glycol 4000, polyethylene glycol 6000, polyethylene glycol 20000, sorbitol And sorbitol-based composite phase change materials, erythritol and erythritol-based composite phase change materials, xylitol and xylitol-based composite phase change materials, mannitol and mannitol-based composite phase change materials Material; the materials of the heat storage box and the coil heat exchanger include stainless steel, aluminum, aluminum alloy, copper and copper alloy, etc., and the outer wall of the tube is treated with anti-corrosion, and the anti-corrosion material is preferably phenolic resin, epoxy resin, Any one or more of polyurethane resin, polyethylene, ABS plastic, and fluororubber;

The outside of the heat storage box is subjected to temperature treatment, and the selected thermal insulation material is any one or more of glass fiber rock wool, polyurethane, aluminum silicate needle-punched ceramic fiber, and flame-retardant rubber.

The specific workflow is as follows:

(1) One-stage compression heating and heating

During primary compression heating, the fourth solenoid valve 12, the fifth solenoid valve 9, the sixth solenoid valve 14, the seventh solenoid valve 18 are closed, the secondary compressor 23 is closed, the first solenoid valve 11, the second solenoid valve 16 , the third solenoid valve 19 and the primary compressor are turned on. The refrigerant comes out of the outlet of the system heat exchanger 6 and enters the first solenoid valve 11 through the pipeline, then enters the first throttle valve 15, throttling and reducing pressure, and then enters the outdoor heat exchanger 17 through the second solenoid valve 16 to absorb heat, and then After passing through the third solenoid valve 19, the first-stage four-way reversing valve 20 through the interface C and interface D enters the first-stage compressor 21 for compression and temperature rise, and then from the exhaust port of the first-stage compressor 21, passes through the first-stage four-way reversing valve 20 port B and port A enter the secondary four-way reversing valve 22 port C, and enter the system heat exchanger 6 through the secondary four-way reversing valve 22 port A. The refrigerant in the system heat exchanger 6 heats the heat exchange medium in the electromagnetic heating system, and the heated heat exchange medium enters the electromagnetic heating tube 24 for reheating, and enters the coil exchange through the first electric three-way valve 26 Heater 28 exchanges heat with the phase-change heat storage material. When the temperature of the first temperature detector 30 and the second temperature detector 31 are the same, the first electric three-way valve 26 switches the valve direction, and the heat exchange in the electromagnetic heating system The medium does not enter the coil heat exchanger 28, and then passes through the third electric three-way valve 29. The third electric three-way valve 29 is controlled to start and stop according to the outlet water temperature of the terminal radiator 1 . .

In the defrosting mode, the primary compressor 21, the secondary compressor 23, and the electromagnetic heating tube 24 stop working, the fourth electromagnetic valve 12, the second electromagnetic valve 16, the fifth electromagnetic valve 9, and the third electromagnetic valve 1 are closed. The first solenoid valve 11, the sixth solenoid valve 14 and the seventh solenoid valve 18 are turned on. The refrigerant is heated in the system heat exchanger 6 by the heat exchange medium coming out of the end heat exchanger 3, passes through the first solenoid valve 11 and the sixth solenoid valve 14, enters the outdoor evaporator 17 to defrost, and then passes through the seventh solenoid valve 18 Then enter the system heat exchanger 6; the heat exchange medium from the system heat exchanger 6 passes through the electromagnetic heating tube 24, enters the coil heat exchanger 28 through the first electric three-way valve 26, and is absorbed by the phase change energy storage material After heating, it enters the terminal heat exchanger 3 through the third electric three-way valve 29 to provide heat for the building.

(2) Two-stage compression heating and heating

During two-stage compression heating, the first solenoid valve 11, sixth solenoid valve 14, and seventh solenoid valve 18 are closed, and the fourth solenoid valve 12, fifth solenoid valve 9, sixth solenoid valve 14, and seventh solenoid valve Machine 20 and secondary compressor 23 are turned off and turned on. The refrigerant comes out from the outlet of the system heat exchanger 6 and enters the fourth solenoid valve 12 through the pipeline, and then enters the second throttle valve 13 for throttling and pressure reduction, and enters the high-pressure liquid storage tank 10. In the high-pressure liquid storage tank 10, a part of The refrigerant enters the third throttling valve 7 through the fifth solenoid valve, throttling and reducing pressure, and enters the intermediate heat exchanger 8, and the other refrigerant directly enters the intermediate heat exchanger 8, and in the intermediate heat exchanger 8 , the refrigerant passing through the third throttling valve 7 is heated and vaporized by the refrigerant directly coming out of the high-pressure liquid storage tank 10, and the refrigerant cooled down through the intermediate heat exchanger 8 passes through the second throttling valve 15, and after throttling and reducing pressure, Enter the heat exchanger 17 through the second electromagnetic valve 16 to absorb heat, then pass through the third electromagnetic valve 19, and enter the first-stage compressor 21 through the interface C and interface D of the first-stage four-way reversing valve 20 to compress and heat up, and then from the first-stage The exhaust port of the compressor 21 is compressed through the first-stage four-way reversing valve 20 interface B and interface A, and is mixed with the vaporized refrigerant passing through the intermediate heat exchanger 8, and then passes through the second-stage four-way reversing valve 22 Port C and port D enter the secondary compressor 23 for compression and temperature rise, and then enter the system heat exchanger 6 from the exhaust port of the secondary compressor 23 through port B and port A of the secondary four-way reversing valve 22 . The refrigerant in the system heat exchanger 6 heats the heat exchange medium in the electromagnetic heating system, and the heated heat exchange medium enters the electromagnetic heating tube 24 for reheating, and enters the coil exchange through the first electric three-way valve 26 Heater 28 exchanges heat with the phase-change heat storage material, and the third electric three-way valve 29 is controlled to start and stop according to the outlet water temperature of end radiator 1 .

In the defrosting mode, the primary compressor 21, the secondary compressor 23, and the electromagnetic heating tube 24 stop working, the fourth electromagnetic valve 12, the second electromagnetic valve 16, the fifth electromagnetic valve 9, and the third electromagnetic valve 1 are closed. The first solenoid valve 11, the sixth solenoid valve 14 and the seventh solenoid valve 18 are turned on. The refrigerant is heated in the system heat exchanger 6 by the heat exchange medium coming out of the end heat exchanger 3, passes through the first solenoid valve 11 and the sixth solenoid valve 14, enters the outdoor evaporator 17 to defrost, and then passes through the seventh solenoid valve 18 Then enter the system heat exchanger 6; the heat exchange medium from the system heat exchanger 6 passes through the electromagnetic heating tube 6, enters the coil heat exchanger 28 through the first electric three-way valve 26, and is absorbed by the phase change energy storage material After heating, it enters the terminal heat exchanger 3 through the third electric three-way valve 29 to provide heat for the building.

(2) Phase change heating operation:

In the case of heat supply by the phase change energy storage system, the two-stage compressed air source system and the electromagnetic heating system stop working. The second electric three-way valve 4 switches the direction of the valve, so that the heat exchange medium no longer enters the system heat exchanger 6, and directly passes through the electromagnetic heating tube 24, passes through the first electric three-way valve 26 and enters the coil heat exchanger 28, and The phase-change energy storage material is heated, and then enters the terminal heat exchanger 3 through the third electric three-way valve 29 to provide heat for the building. The third electric three-way valve 29 is controlled to start and stop according to the outlet water temperature of the terminal radiator 1 . When the outlet water temperature of the end radiator 1 is lower than the opening temperature set by the third electric three-way valve 29, the third electric three-way valve 29 is closed, and the heat exchange medium no longer enters the end heat exchanger 3; When the outlet water temperature is higher than the opening temperature set by the third electric three-way valve 29 , the third electric three-way valve 29 is opened, and the heat exchange medium enters the terminal heat exchanger 3 .

(3) Cooling operation:

In cooling mode, the secondary compressor 23 and the electromagnetic heating tube 24 stop working, the seventh solenoid valve 18, the sixth solenoid valve 14, the fourth solenoid valve 12 and the fifth solenoid valve 9 are closed, the third solenoid valve 19, the second solenoid valve The solenoid valve 16 and the first solenoid valve 11 are turned on. The refrigerant comes out of the system heat exchanger 6 through the port A and port C of the secondary four-way reversing valve 22, enters the primary compressor 21 through the port A and port B of the primary four-way reversing valve 20, and enters the primary compressor 21 from the primary compressor 21 The exhaust port passes through the first-stage four-way reversing valve 20 interface D and interface C, passes through the seventh solenoid valve 18, enters the outdoor heat exchanger 17 to dissipate heat, and outputs to the second solenoid valve 16 to enter the first throttle valve 15 for throttling The pressure is reduced, and finally enters the system heat exchanger 6 through the first electromagnetic valve 11. The heat exchange medium in the electromagnetic heating system enters the heat exchanger 6 of the system through the second electric three-way valve 4 to be cooled by the refrigerant, then passes through the electromagnetic heating pipe 24, and is passed by the first electric three-way valve 26 to exchange heat through the coil The heat exchanger 28 directly enters the terminal heat exchanger through the third electric three-way valve 29 to provide cooling for the building.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Under the premise of not departing from the principle of the present invention, those skilled in the art can make equivalent changes or replacements to relevant technical features, and the technical solutions after these changes or replacements will all fall within the protection scope of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention; for those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. An energy storage and supply device based on an air source heat pump, characterized in that it includes:

   The two-stage compressed air source heat pump module is equipped with an outdoor heat exchanger and a compression unit, the compression unit is used to compress the injected refrigerant at least twice, and the outdoor heat exchanger is connected to the compression unit for The compressed refrigerant dissipates heat or absorbs heat;

   An energy storage module, which is connected to the output end of the two-stage compressed air source heat pump module, and is used to store the energy generated by the two-stage compressed air source heat pump module;

   An electromagnetic heating module, the electromagnetic heating module includes an electromagnetic heater, and the electromagnetic heater is connected to the heat exchanger of the system to reheat the refrigerant in the heat exchanger of the electromagnetic heating module of the system;

   A temperature detection module, which includes a number of thermometers, which are respectively arranged at the input end and output end of the pipeline of the two-stage compressed air source heat pump module and the energy storage module or the input end and output end of the valve;

   A display control module, used to adjust and display the corresponding device according to the data detected by the temperature detection module;

   When the system starts pre-heating, the display control module extracts the current heating time and determines the heating mode according to the current heating time. If the display control module determines that the two-stage compressed air source heat pump module and the electromagnetic heating module are providing heat, The display control module controls the temperature detection module to detect the temperature of the phase change material in the energy storage module and adjusts the operation mode of the two-stage compressed air source heat pump module and the electromagnetic heating module according to the temperature of the change phase material, and when the operation mode is determined to be completed and the expected After setting the time, the display control module controls the temperature detection module to detect the energy storage module and judges whether to continue the heat exchange according to the detection result. The detection result determines whether to continue the heat exchange.
2. The energy storage and supply device based on an air source heat pump according to claim 1, wherein the two-stage compressed air source heat pump module also includes a system heat exchanger and a high-pressure liquid storage tank, and the system heat exchanger is arranged in the Between the two-stage compressed air source heat pump module and the energy storage module, it is used to dissipate or absorb the energy output by the energy storage module. The high-pressure liquid storage tank is provided with the output end of the system heat exchanger to store or divert the refrigerant;

   The energy storage module also includes an energy storage box, a coil heat exchanger, a first electric three-way valve, a second electric three-way valve, a third electric three-way valve, a system heat exchanger, a high-pressure liquid storage tank, a storage The liquid tank and the first circulation pump, wherein the energy storage tank is connected to the electromagnetic heater for storing the energy generated by the two-stage compressed air source heat pump module, and the coil heat exchanger and the electromagnetic heating tube connected to exchange heat between the output of the electromagnetic heating tube and the phase-change heat storage material in the coil heat exchanger; the first electric three-way valve is connected to the coil heat exchanger to exchange heat for the input coil The refrigerant of the heat exchanger is adjusted, the second electric three-way valve is connected with the system heat exchanger to adjust the refrigerant input into the system heat exchanger, and the third electric three-way valve is connected with the coil heat exchanger , used to adjust the refrigerant output by the coil heat exchanger, the first circulation pump and the second electric three-way valve are used to circulate the heated or cooled water, and the liquid storage tank is connected to the first electric three-way valve , used to store the refrigerant, the system heat exchanger is set at the input end of the energy storage module to dissipate or absorb the energy output by the energy storage module, and the high-pressure liquid storage tank is set at the output of the system heat exchanger terminal for storing or diverting the refrigerant;

   The temperature detection module includes a first thermometer, a second thermometer, a third thermometer, a fourth thermometer, a fifth thermometer and a sixth thermometer, wherein the first temperature is set at the output end of the first electric three-way valve to detect The temperature of the material phase change heat storage material in the inner end of the coil heat exchanger, and the second thermometer, which is arranged at the input end of the coil heat exchanger, is used to detect the material phase change heat storage material in the coil heat exchanger Temperature, the third thermometer, which is arranged inside the energy storage box, is used to detect the temperature in the energy storage box, and the fourth thermometer, which is arranged at the output end of the electromagnetic heating tube, is used to detect the output end of the electromagnetic heating tube Temperature, the fifth thermometer, which is set on the output end of the terminal radiator, is used to detect the temperature of the output end of the terminal radiator, and the sixth thermometer, which is set on the outdoor heat exchanger, is used to detect the temperature of the outdoor heat exchange device temperature.
3. The energy storage and supply device based on an air source heat pump according to claim 2, wherein the compression unit includes a first compression device and a second compression device connected in parallel, wherein one end of the first compression device is connected to the second compression device One end of the four-way reversing valve is connected to the D port, the other end is connected to the outdoor heat exchanger, one end of the second compression device is connected to the D port of the second four-way reversing valve, and the other end is connected to the system exchange Heater connection.
4. The energy storage and supply device based on an air source heat pump according to claim 3, wherein the two-stage compressed air source heat pump module further includes an intermediate heat exchanger, a solenoid valve unit and a throttle valve unit, wherein the solenoid valve The unit includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a sixth solenoid valve and a seventh solenoid valve, the first solenoid valve is connected to the output end of the system heat exchanger connected to control the refrigerant output from the system heat exchange device, the second solenoid valve is connected to the outdoor heat exchanger to control the refrigerant input from the outdoor heat exchanger, and the third solenoid valve is connected to the first-stage four-way The port C of the reversing valve is connected to control the refrigerant fluid output by the outdoor heat exchanger, and the fourth solenoid valve is connected to the first solenoid valve to control the outdoor heat exchanger when the first solenoid valve stops. The refrigerant fluid output by the heat exchanger, the fifth electromagnetic valve and the high-pressure liquid storage tank are used to control the refrigerant fluid output by the high-pressure liquid storage tank, and the sixth electromagnetic valve is connected with the first electromagnetic valve to control the flow through the first electromagnetic valve. The refrigerant fluid of the electromagnetic valve is controlled again. The seventh electromagnetic valve and the system heat exchanger are used to control the refrigerant fluid entering and leaving the system heat exchanger. The throttle valve unit includes a first throttle valve, a second throttle valve and a The third throttle valve, wherein, the first throttle valve is connected with the first electromagnetic valve to throttle and reduce the pressure of the refrigerant output by the first electromagnetic valve, and the second throttle valve is connected with the fourth electromagnetic valve The valve is connected to throttling and depressurizing the refrigerant output by the fourth solenoid valve, and the third throttle valve is connected to the fifth solenoid valve to throttling and depressurizing the refrigerant output by the fifth solenoid valve , the intermediate heat exchanger is connected with the third throttle valve, and is used for heating and vaporizing the refrigerant output from the third throttle valve and the refrigerant output from the high-pressure liquid storage tank.
5. The energy storage and supply device based on an air source heat pump according to claim 4, wherein the energy storage module further includes an energy storage box, a coil heat exchanger, a first electric three-way valve, a second electric three-way A through valve, a third electric three-way valve, a liquid storage tank, a first circulation pump, an end radiator, an end heat exchanger and a second circulation pump, wherein the energy storage box is connected with the electromagnetic heater for The energy generated by the two-stage compressed air source heat pump module is stored, and the coil heat exchanger is connected to the electromagnetic heating tube to exchange the output of the electromagnetic heating tube with the phase change heat storage material in the coil heat exchanger. heat, the first electric three-way valve is connected with the coil heat exchanger to adjust the refrigerant input into the coil heat exchanger, and the second electric three-way valve is connected with the system heat exchanger for Regulate the refrigerant input into the heat exchanger of the system. The third electric three-way valve is connected with the coil heat exchanger to adjust the refrigerant output from the coil heat exchanger. The first circulation pump and the second electric three-way valve The through valve is used to circulate the heated or refrigerated water, the liquid storage tank is connected to the first electric three-way valve, and is used to store the refrigerant, and the end heat exchanger is connected to the third electric three-way valve , used to exchange heat for the refrigerant output by the third electric three-way valve, the second circulation pump is connected to the end heat exchanger, and is used to circulate the water heated or cooled by the end heat exchanger, and the end radiator is connected to the second The circulation pump is connected to transfer excess heat from the second circulation pump.
6. The energy storage and supply device based on an air source heat pump according to claim 5, wherein when the system starts pre-heating, the display control module extracts the current heating time T and compares T with the preset grain price in the display control module Time T0 is compared to determine the operating mode;

   If T≤T0, the display control module determines that a two-stage compressed air source heat pump module and an electromagnetic heating module are used for heat supply;

   If T>T0, the display control module determines to use the thermal energy stored in the energy storage module for heating.
7. The energy storage and supply device based on an air source heat pump according to claim 6, wherein when the display control module determines that the two-stage compressed air source heat pump module and the electromagnetic heating module are used to provide heat and the heating time reaches the preset time , the display control module controls the third thermometer to detect the temperature Dc of the phase change material in the energy storage box and compares Dc with the temperature Dc0 of the preset phase change material in the display control module to determine the temperature of the two-stage compressed air source heat pump and electromagnetic heating. usage mode;

   When Dc<Dc0, the display control module determines that the two-stage compressed air source heat pump provides heating;

   When Dc≧Dc0, the display control module determines that the two-stage compressed air source heat pump and the electromagnetic heating tube combine heating and heating.
8. The energy storage and supply device based on air source heat pump according to claim 7, characterized in that when the display control module determines that the use mode of the two-stage compressed air source heat pump and electromagnetic heating is completed and the formal heating is performed and the heating time When the preset time is reached, the display control module controls the sixth thermometer to detect the outdoor temperature Db and compares Db with the preset outdoor temperature Db0 in the display control module to determine whether to defrost the outdoor heat exchange;

   If Db<Db0, the display control module determines that the heat storage module needs to be controlled to defrost the outdoor heat exchange;

   If Db≥Db0, the display control module determines not to defrost the outdoor heat exchange.
9. The energy storage and supply device based on an air source heat pump according to claim 7, wherein when the display control block uses a two-stage compressed air source heat pump module for heating and heating and reaches a preset duration, the display control module Controlling the fifth thermometer to detect the temperature Da at the output end of the end radiator and comparing Da with the third electric three-way valve Da0 provided in the display control module to determine whether to start the third electric three-way valve;

   If Da<Da0, the display control module determines to close the third electric three-way valve to stop the heat exchange medium from entering the terminal heat exchanger;

   If Da≥Da0, the display control module determines to activate the third electric three-way valve to allow the heat exchange medium to enter the terminal heat exchanger.
10. The energy storage and supply device based on an air source heat pump according to claim 6, wherein when the display control block uses the thermal energy stored in the energy storage module to provide heat for a preset duration, the display control module controls The fifth thermometer detects the temperature Db at the output end of the terminal radiator and compares Db with the third electric three-way valve Db0 provided in the display control module to determine whether to start the third electric three-way valve;

    If Db<Db0, the display control module determines to activate the third electric three-way valve to allow the heat exchange medium to enter the terminal heat exchanger;

    If Db≥Db0, the display control module determines to close the third electric three-way valve to stop the heat exchange medium from entering the terminal heat exchanger.

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