Enthalpy-increasing air conditioning system, control method of enthalpy-increasing air conditioning system and electronic equipment

Abstract

The invention discloses an enthalpy-increasing air conditioning system, a control method of the enthalpy-increasing air conditioning system and electronic equipment. The enthalpy-increasing air conditioning system comprises an indoor heat exchanger, a compressor, an outdoor heat exchanger, an economizer, a first expansion valve and a second expansion valve which are sequentially connected. The fourth end of the economizer is connected with an enthalpy increasing opening of the compressor and used for conducting air supplementing and enthalpy increasing on the compressor. The first branch is connected with the outdoor heat exchanger, the second branch is connected with the indoor heat exchanger, and the first branch and the second branch are conducted in a refrigeration mode. Pipeline redundancy is reduced, the heat exchange efficiency in the refrigeration mode is optimized, air supply and enthalpy increase of the compressor in the refrigeration mode are achieved, the working performance of the compressor is improved, and therefore the refrigeration energy efficiency is improved, the compressor with the smaller displacement can be selected under the condition that the air conditioning system meets the same refrigeration capacity requirement, and the energy consumption is reduced. The cost is reduced, the size of the air conditioning system is reduced, and the requirements for high efficiency and light weight of the automobile air conditioning system are met.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to an enthalpy-increasing air conditioning system, a control method for the enthalpy-increasing air conditioning system, and electronic equipment. Background Art

[0002] As global climate change and energy crisis become increasingly severe, energy conservation and emission reduction have become an important issue in today's society. In the field of automotive air conditioning, traditional air conditioning systems can no longer meet the needs of modern cars for efficient energy saving and space utilization due to problems such as low efficiency and large space occupation. Therefore, developing a new air conditioning system to improve energy efficiency and reduce volume has become a research hotspot in this field.

[0003] In the process of realizing the present invention, the inventors found that the prior art has at least the following technical problems: In order to improve the refrigeration and heat exchange efficiency, the traditional vehicle air-conditioning system is usually equipped with a larger tube-fin heat exchanger. Although this practice improves the heat exchange capacity to a certain extent, it increases the volume of the air-conditioning system and limits its application possibility in compact spaces. At the same time, due to the limitations of the system design, the working performance of the compressor in the refrigeration mode cannot be fully exerted, which leads to the unsatisfactory refrigeration energy efficiency of the entire air-conditioning system.

[0004] Therefore, how to reduce the volume of the air-conditioning system and improve the refrigeration energy efficiency is a technical problem that those skilled in the art need to solve. Summary of the invention

[0005] In order to effectively improve the problems of large volume and low refrigeration efficiency of air-conditioning systems in the prior art, the present invention provides an enthalpy-increasing air-conditioning system, a control method for the enthalpy-increasing air-conditioning system, and an electronic device.

[0006] An enthalpy-increasing air conditioning system comprises: an indoor heat exchanger, a compressor, an outdoor heat exchanger, an economizer, a first expansion valve, and a second expansion valve connected in sequence; The economizer includes a first end to a fourth end, the first end of the economizer is connected to the first branch, the second end is connected to the third end through the second expansion valve, and the fourth end is connected to the enthalpy increase port of the compressor, for replenishing air and increasing enthalpy for the compressor; the first branch is also connected to the outdoor heat exchanger, and the first branch is turned on in the cooling mode; The first end of the first expansion valve is connected to the second end of the economizer, and the second end of the first expansion valve is connected to the second branch; the second branch is also connected to the indoor heat exchanger, and the second branch is connected in the cooling mode.

[0007] Optionally, the enthalpy-increasing air conditioning system further includes a four-way reversing valve, wherein: The four-way reversing valve includes a first interface to a fourth interface; the first interface is connected to the exhaust port of the compressor; the second interface is connected to the outdoor heat exchanger; the third interface is connected to the indoor heat exchanger; the fourth interface is connected to the air intake port of the compressor; In cooling mode, the first interface is connected to the second interface, and the third interface is connected to the fourth interface; in heating mode, the first interface is connected to the third interface, and the second interface is connected to the fourth interface.

[0008] Optionally, the first end of the economizer is also connected to a third branch, the third branch is also connected to the indoor heat exchanger, and the third branch is turned on in the heating mode; The second end of the first expansion valve is also connected to the fourth branch; the fourth branch is also connected to the outdoor heat exchanger, and the fourth branch is connected in the heating mode.

[0009] Optionally, the enthalpy-increasing air conditioning system further includes: A gas-liquid separator, located between the fourth interface of the four-way reversing valve and the air intake of the compressor; an indoor fan, disposed adjacent to the indoor heat exchanger, for achieving forced convection heat exchange between the indoor heat exchanger and indoor air; The outdoor fan is arranged adjacent to the outdoor heat exchanger and is used to realize forced convection heat exchange between the outdoor heat exchanger and outdoor air.

[0010] Optionally, the first branch is provided with a first one-way valve; the second branch is provided with a second one-way valve; the third branch is provided with a third one-way valve; and the fourth branch is provided with a fourth one-way valve.

[0011] Optionally, the enthalpy-increasing air conditioning system further includes: A drying filter is located between the outdoor heat exchanger and the first one-way valve.

[0012] A control method for an enthalpy-increasing air conditioning system, applied to the enthalpy-increasing air conditioning system, comprises: Detecting the operating mode and operating parameters of the enthalpy-increasing air conditioning system; The operating state of the enthalpy-increasing air-conditioning system is controlled according to the operating mode and the operating parameters.

[0013] Optionally, controlling the operating state of the enthalpy-increasing air-conditioning system according to the operating mode and the operating parameters includes: When the operation mode is a cooling mode, controlling the first interface to be connected to the second interface, the third interface to be connected to the fourth interface, and determining a first set temperature according to the operation parameter; Detecting the first indoor temperature and controlling the indoor fan to start; determining whether the first set temperature is lower than the first indoor temperature; If not, return to the step of detecting the first indoor temperature and controlling the indoor fan to turn on; If yes, the compressor, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in an open state; determining whether the first set temperature is greater than or equal to the first indoor temperature; If the first set temperature is lower than the first indoor temperature, the step of controlling the compressor, the outdoor fan, the first expansion valve and the second expansion valve to be in an open state is returned to execution; If the first set temperature is greater than or equal to the first indoor temperature, the compressor, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in a closed state; When the compressor, the outdoor fan, the first expansion valve and the second expansion valve are in a closed state, determining whether the enthalpy-increasing air-conditioning system exits a cooling mode; If the cooling mode is not exited, returning to the step of detecting the first indoor temperature and controlling the indoor fan to turn on; If the cooling mode is exited, the enthalpy-increasing air-conditioning system is turned off.

[0014] Optionally, controlling the operating state of the enthalpy-increasing air-conditioning system according to the operating mode and the operating parameters includes: When the operation mode is the heating mode, controlling the first interface to be connected to the third interface, controlling the second interface to be connected to the fourth interface, and determining a second set temperature according to the operation parameters; Detecting the second indoor temperature; determining whether the second set temperature is greater than the second indoor temperature; If not, the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in a closed state; If yes, control the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve to be in an open state; determining whether the second set temperature is less than or equal to the second indoor temperature; If the second set temperature is greater than the second indoor temperature, returning to the step of controlling the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve to be in an open state; If the second set temperature is less than or equal to the second indoor temperature, the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in a closed state; When the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve are in a closed state, determining whether the enthalpy-increasing air-conditioning system exits a heating mode; If the heating mode is not exited, returning to the step of detecting the second indoor temperature; If the cooling mode is exited, the enthalpy-increasing air-conditioning system is turned off.

[0015] An electronic device, comprising: A processor and a memory, wherein the memory is used to store at least one instruction, and when the instruction is loaded and executed by the processor, it realizes the control method of the enthalpy-added air-conditioning system as described in any one of the above.

[0016] Compared with the prior art, the technical solution provided by the embodiment of the present invention has at least the following beneficial effects: The enthalpy-increasing air conditioning system provided by the present invention realizes precise control of the refrigerant flow direction by integrating an economizer and two expansion valves, reduces pipeline redundancy, and thus optimizes the heat exchange efficiency of the indoor heat exchanger and the outdoor heat exchanger in the cooling mode. At the same time, by configuring the fourth end of the economizer to be connected to the enthalpy-increasing port of the compressor, the air replenishment and enthalpy-increasing of the compressor in the cooling mode is realized, the working performance of the compressor is improved, thereby improving the refrigeration energy efficiency of the air conditioning system, and the air conditioning system can use a compressor with a smaller displacement while meeting the same cooling capacity requirements, which not only reduces the cost, but also reduces the weight of the air conditioning system. In addition, the air conditioning system can use a smaller heat exchanger, which is conducive to further reducing the volume of the air conditioning system, making the air conditioning system more compact and convenient for installation in vehicles with limited space, meeting the requirements of high efficiency and lightweight of automobile air conditioning systems.

[0017] In summary, the present invention can effectively improve the problems of large volume and low refrigeration efficiency of the air-conditioning system in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A structural schematic diagram of an enthalpy-increasing air-conditioning system provided by an embodiment of the present invention; Figure 2 A schematic diagram of an enthalpy-added air-conditioning system in a cooling mode provided by an embodiment of the present invention; Figure 3A schematic diagram of an enthalpy-added air conditioning system in a heating mode provided by an embodiment of the present invention; Figure 4 A flow chart of a control method for an enthalpy-increasing air-conditioning system provided by an embodiment of the present invention; Figure 5 for Figure 4 A flow chart of a practical expression of S02 in a control method of an enthalpy-increasing air-conditioning system provided; Figure 6 for Figure 4 A flow chart of another practical expression of S02 in a control method for an enthalpy-added air-conditioning system is provided.

[0020] Description of reference numerals: 1. Compressor, 101. Air intake port, 102. Air exhaust port, 103. Enthalpy increase port, 2. Four-way reversing valve, 201. First interface, 202. Second interface, 203. Third interface, 204. Fourth interface, 3. Outdoor fan, 4. Outdoor heat exchanger, 5. Dry filter, 6. First check valve, 7. Third check valve, 8. Economizer, 801. First end, 802. Second end, 803. Third end, 804. Fourth end, 9. First expansion valve, 10. Second expansion valve, 11. Second check valve, 12. Indoor fan, 13. Indoor heat exchanger, 14. Fourth check valve, 15. Gas-liquid separator. DETAILED DESCRIPTION

[0021] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0024] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] As global climate change and energy crisis become increasingly severe, energy conservation and emission reduction have become an important issue in today's society. In the field of automotive air conditioning, traditional air conditioning systems can no longer meet the needs of modern cars for efficient energy saving and space utilization due to problems such as low efficiency and large space occupation. Therefore, developing a new air conditioning system to improve energy efficiency and reduce volume has become a research hotspot in this field.

[0026] The inventors found that in order to improve the refrigeration and heat exchange efficiency, traditional vehicle air conditioning systems are usually equipped with larger tube-fin heat exchangers. Although this approach improves the heat exchange capacity to a certain extent, it increases the volume of the air conditioning system and limits its application possibilities in compact spaces. At the same time, due to the limitations of the system design, the working performance of the compressor in the refrigeration mode cannot be fully exerted, which leads to the unsatisfactory refrigeration energy efficiency of the entire air conditioning system.

[0027] Therefore, the present invention provides an enthalpy-increasing air-conditioning system and a control method of the enthalpy-increasing air-conditioning system, so as to improve the above-mentioned problems.

[0028] Please refer to Figure 1 , is a structural schematic diagram of an enthalpy-increasing air-conditioning system provided by an embodiment of the present invention, such as Figure 1 As shown, the enthalpy-increasing air conditioning system comprises: The indoor heat exchanger 13, the compressor 1, the outdoor heat exchanger 4, the economizer 8, the first expansion valve 9, and the second expansion valve 10 are connected in sequence; The economizer 8 includes a first end 801 to a fourth end 804, the first end 801 of the economizer 8 is connected to the first branch, the second end 802 is connected to the third end 803 through the second expansion valve 10, and the fourth end 804 is connected to the enthalpy increase port 103 of the compressor 1, for replenishing air and increasing enthalpy for the compressor 1; the first branch is also connected to the outdoor heat exchanger 4, and the first branch is connected in the cooling mode; it can be understood that the first end 801 to the second end 802 of the economizer 8 form a first heat exchange channel, the third end 803 to the fourth end 804 of the economizer 8 form a second heat exchange channel, and the first heat exchange channel and the second heat exchange channel can exchange heat with each other; The first end of the first expansion valve 9 is connected to the second end 802 of the economizer 8, and the second end of the first expansion valve 9 is connected to the second branch; the second branch is also connected to the indoor heat exchanger 13, and the second branch is connected in the cooling mode.

[0029] In this embodiment, by setting the first end 801 of the economizer 8 to be connected to the first branch, the economizer 8 can further cool down (supercool) the refrigerant after passing through the outdoor heat exchanger 4. At the same time, by setting the fourth end 804 of the economizer 8 to be connected to the enthalpy increase port 103 of the compressor 1, the economizer 8 can supercool the refrigerant in the air-conditioning system in the cooling mode, and replenish air to increase enthalpy for the compressor 1, thereby improving the working performance of the compressor 1 and thus improving the refrigeration energy efficiency of the air-conditioning system.

[0030] In this embodiment, the first end of the first expansion valve 9 is connected to the second end 802 of the economizer 8, and the second end of the first expansion valve 9 is connected to the second branch, so that the refrigerant flowing out of the second end 802 of the economizer 8 is throttled into a low-temperature and low-pressure liquid (or a gas-liquid mixture) and enters the indoor heat exchanger 13 through the second branch.

[0031] In this embodiment, by providing a second expansion valve connected to the second end and the third end of the economizer respectively, the refrigerant output from the second end 802 of the economizer 8 can be throttled and depressurized and then input to the third end 803 of the economizer 8 .

[0032] The function of the second expansion valve 10 is to throttle and reduce the pressure of the refrigerant output from the second end 802 of the economizer 8, and then input the treated refrigerant into the third end 803 of the economizer 8. This process is a key link in the refrigeration cycle of the air-conditioning system. Through the throttling effect of the second expansion valve 10, the refrigerant is converted into a low-temperature and low-pressure state before entering the third end 803 of the economizer 8, and then heat exchanges with the medium-temperature and high-pressure liquid refrigerant inside the economizer 8, that is, the low-temperature and low-pressure refrigerant in the second heat exchange channel exchanges heat with the medium-temperature and high-pressure liquid refrigerant in the first heat exchange channel, and the low-temperature and low-pressure refrigerant in the second heat exchange channel absorbs heat and evaporates into a low-temperature and low-pressure gas. Finally, these gaseous refrigerants directly enter the enthalpy increase port 103 of the compressor 1, and by mixing with other gaseous refrigerants in the compressor 1, the compression ratio of the compressor 1 is reduced, thereby enhancing the refrigeration efficiency and refrigeration capacity of the system. Such a design not only improves the energy efficiency of the enthalpy increase air-conditioning system, but also helps to improve the refrigeration effect.

[0033] When the enthalpy-increasing air-conditioning system is in cooling mode, the first branch is connected to the second branch, which realizes the precise control of the refrigerant flow direction, reduces the redundancy of the pipeline, and optimizes the heat exchange efficiency of the indoor heat exchanger 13 and the outdoor heat exchanger 4 in the cooling mode. At the same time, by configuring the fourth end 804 of the economizer 8 to be connected to the enthalpy-increasing port 103 of the compressor 1, the air replenishment enthalpy of the compressor 1 is realized in the cooling mode, the working performance of the compressor is improved, and the refrigeration energy efficiency of the air-conditioning system is improved. In addition, the air-conditioning system can use a compressor with a smaller displacement while meeting the same cooling capacity requirements, which not only reduces the cost, but also reduces the weight of the air-conditioning system. In addition, the air-conditioning system can use a smaller heat exchanger, which is conducive to further reducing the volume of the air-conditioning system, making the air-conditioning system more compact and easy to install in vehicles with limited space, meeting the requirements of high efficiency and lightweight of automobile air-conditioning systems.

[0034] On the basis of the above embodiments, in some embodiments, the enthalpy-increasing air conditioning system may further include a four-way reversing valve 2, wherein: The four-way reversing valve 2 includes a first interface 201 to a fourth interface 204; the first interface 201 is connected to the exhaust port 102 of the compressor 1; the second interface 202 is connected to the outdoor heat exchanger 4; the third interface 203 is connected to the indoor heat exchanger 13; the fourth interface 204 is connected to the air intake port 101 of the compressor 1; In cooling mode, the first interface 201 and the second interface 202 of the four-way reversing valve 2 are connected, and the third interface 203 and the fourth interface 204 are connected; in heating mode, the first interface 201 and the third interface 203 of the four-way reversing valve 2 are connected, and the second interface 202 and the fourth interface 204 are connected.

[0035] In this embodiment, the design of the four-way reversing valve 2 includes four interfaces, wherein the first interface 201 is connected to the exhaust port 102 of the compressor 1 to ensure that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 can enter the outdoor heat exchanger 4 or the indoor heat exchanger 13 for condensation; the second interface 202 is connected to the outdoor heat exchanger 4 to ensure that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 in the cooling mode flows into the outdoor heat exchanger 4 for condensation, and at the same time ensures that the low-temperature and low-pressure gaseous refrigerant passing through the outdoor heat exchanger 4 in the heating mode returns to the compressor 1; the third interface 203 is connected to the indoor heat exchanger to ensure that the low-temperature and low-pressure gaseous refrigerant passing through the indoor heat exchanger 13 in the cooling mode returns to the compressor 1, and at the same time ensures that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 in the heating mode flows into the indoor heat exchanger 13 for condensation; the fourth interface 204 is connected to the air intake port 101 of the compressor to ensure that the low-temperature and low-pressure gaseous refrigerant can smoothly return to the compressor 1 for the next cycle.

[0036] In cooling mode, the first interface 201 and the second interface 202 of the four-way reversing valve 2 are connected, so that the high-temperature and high-pressure refrigerant flows to the outdoor heat exchanger 4 for condensation, and the third interface 203 and the fourth interface 204 are connected, allowing the refrigerant passing through the indoor heat exchanger 13 to flow back to the compressor. In heating mode, the first interface 201 and the third interface 203 of the four-way reversing valve 2 are connected, so that the high-temperature and high-pressure refrigerant flows to the indoor heat exchanger 13 for condensation, and the second interface 202 and the fourth interface 204 are connected, allowing the refrigerant passing through the outdoor heat exchanger 4 to flow back to the compressor.

[0037] Based on the above embodiments, in some embodiments, the first end 801 of the economizer 8 is further connected to the third branch, the third branch is further connected to the indoor heat exchanger 13, and the third branch is turned on in the heating mode; The second end of the first expansion valve 9 is also connected to the fourth branch; the fourth branch is also connected to the outdoor heat exchanger 4, and the fourth branch is connected in the heating mode.

[0038] In this embodiment, when the enthalpy-added air conditioning system is in cooling mode, the first branch is connected to the second branch, and at this time, only the third branch and the fourth branch of the entire enthalpy-added air conditioning system are in a closed state; and when the enthalpy-added air conditioning system is in heating mode, the third branch is connected to the fourth branch, and at this time, only the first branch and the second branch of the entire enthalpy-added air conditioning system are in a closed state. With such a setting, only two branches need to be kept in a closed state in cooling and heating modes respectively, reducing the number of unavailable pipelines in the air conditioning system when switching between different modes, thereby optimizing the overall structure of the system and reducing the volume of the air conditioning system. At the same time, the redundancy of the pipelines is reduced, the energy loss of the system is reduced, and the energy efficiency is improved.

[0039] Based on the above embodiments, in some embodiments, the enthalpy-increasing air conditioning system further includes: The gas-liquid separator 15 is located between the fourth interface 204 of the four-way reversing valve 2 and the air intake port 101 of the compressor 1; An indoor fan 12 is disposed adjacent to the indoor heat exchanger 13 and is used to realize forced convection heat exchange between the indoor heat exchanger 13 and the indoor air; The outdoor fan 3 is arranged adjacent to the outdoor heat exchanger 4, and is used to realize the forced convection heat exchange between the outdoor heat exchanger 4 and the outdoor air. It can be understood that the fan is arranged adjacent to the heat exchanger, and the fan can be arranged on the air inlet side or the air outlet side of the heat exchanger, and the heat exchanger can adopt a tube-fin heat exchanger.

[0040] In this embodiment, the gas-liquid separator 15 is located between the fourth interface 204 of the four-way reversing valve 2 and the air intake 101 of the compressor 1. Its main function is to prevent the low-pressure and low-temperature steam returning to the compressor 1 from carrying too many droplets, and to prevent the liquid refrigerant from entering the cylinder of the compressor 1, thereby effectively preventing liquid hammer. It also has functions such as filtering, oil return, and liquid storage. The indoor fan 12 is arranged adjacent to the indoor heat exchanger 13. Its function is to realize the forced convection heat exchange between the indoor heat exchanger 13 and the indoor air, promote the heat exchange between the indoor air and the indoor heat exchanger 13, and improve the cooling or heating efficiency. The outdoor fan 3 is arranged adjacent to the outdoor heat exchanger 4 to realize the forced convection heat exchange between the outdoor heat exchanger 4 and the outdoor air, and enhance the heat exchange effect of the outdoor heat exchanger 4 by forced convection.

[0041] Based on the above embodiments, in some embodiments, the first branch is provided with a first one-way valve 6; the second branch is provided with a second one-way valve 11; the third branch is provided with a third one-way valve 7; and the fourth branch is provided with a fourth one-way valve 14.

[0042] In this embodiment, the first branch and the third branch are provided with a first one-way valve 6 and a third one-way valve 7, respectively. Similarly, the second branch and the fourth branch are provided with a second one-way valve 11 and a fourth one-way valve 14, respectively. These one-way valves are designed to ensure that the refrigerant flows along a predetermined path in the system and prevent reverse flow. In the cooling mode, due to the pressure difference between different parts of the system, the outlet pressure of the third one-way valve 7 and the fourth one-way valve 14 is greater than the inlet pressure, resulting in the third branch and the fourth branch not participating in the work, so that the refrigerant circulates only through the first branch and the second branch.

[0043] On the contrary, in the heating mode, due to the change in pressure difference, the outlet pressure of the first one-way valve 6 and the second one-way valve 11 is greater than the inlet pressure, so that the first branch and the second branch do not participate in the work, and the refrigerant circulates through the third branch and the fourth branch. In this way, the one-way valve ensures that in any given mode, only the two necessary branches are open, thereby reducing energy loss and improving overall energy efficiency. It can be understood that the first branch can also be provided with a first solenoid valve, the second branch can also be provided with a second solenoid valve, the third branch can also be provided with a third solenoid valve, and the fourth branch can also be provided with a fourth solenoid valve. By controlling the opening and closing of the corresponding solenoid valves, the refrigerant can also be controlled to flow along a predetermined path in the system.

[0044] Based on the above embodiments, in some embodiments, the enthalpy-increasing air conditioning system may further include: The filter drier 5 is located between the outdoor heat exchanger 4 and the first one-way valve 6 .

[0045] In this embodiment, the filter dryer 5 performs drying and filtering on the refrigerant output from the first expansion valve 9 or the outdoor heat exchanger 4. The filter dryer 5 can absorb moisture in the refrigerant and effectively prevent ice blockage and dirt blockage of the system pipeline to ensure that the capillary tube is unobstructed and the refrigeration system works normally. By arranging the filter dryer 5 between the outdoor heat exchanger 4 and the first check valve 6, it can be ensured that the refrigerant reaches the required dryness and cleanliness before entering the next link of the system, thereby improving the operating efficiency and reliability of the entire air-conditioning system.

[0046] Please refer to Figure 2 , is a schematic diagram of an enthalpy-added air conditioning system in a cooling mode provided by an embodiment of the present invention. Figure 2 As shown: When the enthalpy-added air conditioning system is in cooling mode, the low-temperature and low-pressure gaseous refrigerant is compressed into high-temperature and high-pressure steam by the compressor 1, flows through the exhaust port 102 through the four-way reversing valve 2 and enters the outdoor heat exchanger 4, releases heat through forced convection by the outdoor fan 3, and condenses into medium-temperature and high-pressure liquid refrigerant. After passing through the drying filter 5, it flows through the first check valve 6 and enters the economizer 8 and the second expansion valve 10. The low-temperature and low-pressure refrigerant is further cooled (supercooled) by heat exchange, and then divided into two paths: The refrigerant passes through the first expansion valve 9 and is throttled into a low-temperature and low-pressure liquid refrigerant (or a gas-liquid mixture). The refrigerant passes through the second one-way valve 11 and enters the indoor heat exchanger 13, where it absorbs the heat of the indoor air and evaporates into a low-temperature and low-pressure gaseous refrigerant. The indoor air is cooled and sent back to the room through the indoor fan 12. The low-temperature and low-pressure gaseous refrigerant passes through the four-way reversing valve 2 and enters the gas-liquid separator 15, and finally enters the compressor 1 from the air inlet 101 of the compressor 1 for compression. The other path flows through the second expansion valve 10 and is throttled into a low-temperature and low-pressure liquid refrigerant (or a gas-liquid mixture) and enters the economizer 8 again, absorbs the heat of the medium-temperature and high-pressure liquid refrigerant before the absorption valve (before the first expansion valve 9 and the second expansion valve 10), evaporates into a low-temperature and low-pressure gaseous refrigerant, and finally directly enters the enthalpy increase port 103 of the compressor 1.

[0047] Due to the pressure difference at both ends, the third one-way valve 7 and the fourth one-way valve 14 are blocked and no refrigerant flows. Finally, both routes enter the compression cylinder through different suction positions of the compressor 1 and are compressed into high-temperature and high-pressure refrigerant vapor to circulate the system again.

[0048] Please refer to Figure 3 , is a schematic diagram of an enthalpy-added air conditioning system in a heating mode provided by an embodiment of the present invention. Figure 3 As shown: When the enthalpy-added air conditioning system is in heating mode, the refrigerant is compressed into high-temperature and high-pressure steam by the compressor 1, flows through the exhaust port 102 through the four-way reversing valve 2 and enters the indoor heat exchanger 13, and releases heat in the car through forced convection heat exchange by the indoor fan 12, condenses into medium-temperature and high-pressure liquid refrigerant, flows through the third one-way valve 7 and enters the economizer 8 and the second expansion valve 10, and the low-temperature and low-pressure refrigerant is further cooled (supercooled) by heat exchange, and then divided into two paths: It flows through the first expansion valve 9 and is throttled into a low-temperature and low-pressure liquid refrigerant (or a gas-liquid mixture), passes through the fourth one-way valve 14, enters the outdoor heat exchanger 4, absorbs the heat of the outdoor air and evaporates into a low-temperature and low-pressure gas, then flows through the four-way reversing valve 2 and enters the gas-liquid separator 15, and finally enters the compressor 1 from the air intake port 101 of the compressor 1 for compression; The other path flows through the second expansion valve 10 and is throttled into a low-temperature and low-pressure liquid refrigerant (or a gas-liquid mixture) and enters the economizer 8 again, absorbs the heat of the medium-temperature and high-pressure liquid refrigerant before the valve and evaporates into a low-temperature and low-pressure gaseous refrigerant, and finally directly enters the enthalpy increase port 103 of the compressor 1.

[0049] Due to the pressure difference at both ends, the first one-way valve 6 and the third one-way valve 7 are blocked and no refrigerant flows. Finally, both routes enter the compression cylinder through different suction positions of the compressor 1 and are compressed into high-temperature and high-pressure refrigerant vapor to circulate the system again.

[0050] Based on the above technical solution, the enthalpy-increasing air conditioning system provided by the present invention realizes precise control of the refrigerant flow direction by integrating the economizer 8, the first expansion valve 9 and the second expansion valve 10, reduces the redundancy of the pipeline, and thus optimizes the heat exchange efficiency of the indoor heat exchanger 13 and the outdoor heat exchanger 4 in the cooling mode. At the same time, by configuring the fourth end 804 of the economizer 8 to be connected to the enthalpy-increasing port 103 of the compressor 1, the air replenishment enthalpy of the compressor 1 in the cooling mode is realized, which can reduce the compression amount of the compressor 1, thereby improving the working performance of the compressor 1, and then improving the refrigeration energy efficiency of the air conditioning system, and the air conditioning system can use a compressor with a smaller displacement while meeting the same cooling capacity requirements, which not only reduces the cost, but also reduces the weight of the air conditioning system. In addition, the air conditioning system can use a smaller heat exchanger, which is conducive to further reducing the volume of the air conditioning system, making the air conditioning system more compact and convenient to install in a vehicle with limited space, meeting the requirements of high efficiency and lightweight of the automobile air conditioning system.

[0051] Please refer to Figure 4 , is a flow chart of a control method for an enthalpy-increasing air-conditioning system provided by an embodiment of the present invention, comprising the following steps: Step S01, detecting the operation mode and operation parameters of the enthalpy-increasing air-conditioning system.

[0052] In this embodiment, the enthalpy-added air conditioning system can monitor the operating mode and operating parameters of the system in real time by integrating a detection module. For example, the operating mode may include a cooling mode and a heating mode, and the operating parameters may include a first set temperature and a first indoor temperature in the cooling mode, and a second set temperature and a second indoor temperature in the heating mode.

[0053] Step S02, controlling the operating state of the enthalpy-increasing air-conditioning system according to the operating mode and operating parameters.

[0054] In this embodiment, the enthalpy-added air conditioning system can identify the current operating mode and control the operating state of the enthalpy-added air conditioning system according to the operating mode and operating parameters. In the cooling mode, the system monitors and compares the first set temperature and the first indoor temperature to ensure that the indoor temperature reaches the comfort level expected by the user. Similarly, in the heating mode, the system pays attention to the second set temperature and the second indoor temperature to provide a suitable indoor warm environment. This intelligent temperature management not only improves energy efficiency, but also enhances the user's comfort, making the air conditioning system more energy-saving and environmentally friendly, while maintaining efficient cooling and heating performance. In this way, the enthalpy-added air conditioning system can accurately control the indoor temperature to meet the personalized needs of the user, while optimizing energy use and realizing more intelligent and automated air conditioning control. It can be understood that the enthalpy-added air conditioning system is provided with a controller and corresponding temperature sensors to achieve corresponding control.

[0055] Please refer to Figure 5 ,for Figure 4 A flowchart of an actual performance of S02 in a control method of an enthalpy-increasing air conditioning system is provided. In some embodiments, when the operating mode is a cooling mode, the operating state of the enthalpy-increasing air conditioning system is controlled according to the operating mode and operating parameters as mentioned in step S02, which can be specifically as follows: Figure 5 Steps shown: Step S11, when the operation mode is the cooling mode, control the first interface 201 and the second interface 202 of the four-way reversing valve 2 to be connected, and the third interface 203 and the fourth interface 204 to be connected, and determine the first set temperature according to the operation parameters.

[0056] In this embodiment, when the operation mode of the enthalpy-increasing air-conditioning system is set to the cooling mode, the system will automatically control the four-way reversing valve 2 so that the first interface 201 and the second interface 202 are connected, and the third interface 203 and the fourth interface 204 are connected. Such control enables the refrigerant to flow according to the needs of the refrigeration cycle when the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 are in the open state: the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 flows into the outdoor heat exchanger 4 through the first interface 201 and the second interface 202, releases heat in the outdoor heat exchanger 4 and condenses into liquid refrigerant; at the same time, the low-temperature and low-pressure liquid refrigerant throttled by the first expansion valve 9 absorbs heat and evaporates in the indoor heat exchanger 13, reduces the indoor temperature, and flows into the air intake 101 of the compressor 1 through the third interface 203 and the fourth interface 204.

[0057] Step S12, detecting the first indoor temperature and controlling the indoor fan 12 to turn on.

[0058] Step S13, determining whether the first set temperature is lower than the first indoor temperature.

[0059] If yes, execute step S14; if no, return to execute step S12, detect the first indoor temperature, and control the indoor fan 12 to turn on.

[0060] Step S14, controlling the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in an open state.

[0061] In this embodiment, the system first detects the current indoor temperature and controls the opening of the indoor fan 12 as needed to promote the circulation of indoor air and uniform temperature distribution. Then, the system compares the first set temperature set by the user with the first indoor temperature currently detected to determine whether it is necessary to start the refrigeration cycle. If the first set temperature is lower than the first indoor temperature, it indicates that the indoor temperature is higher than the expected value. At this time, the system will control the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to open and start the refrigeration cycle to lower the indoor temperature. If the first set temperature is not less than the first indoor temperature, that is, the indoor temperature has reached or is lower than the expected value, the system will continue to detect the indoor temperature and control the indoor fan 12 as needed, but will not start the compressor 1 and related refrigeration components to avoid unnecessary energy consumption. Such control logic enables the air-conditioning system to respond efficiently to indoor temperature changes, while optimizing energy use and ensuring the comfort of the indoor environment.

[0062] Step S15, determining whether the first set temperature is greater than or equal to the first indoor temperature.

[0063] If the first set temperature is greater than or equal to the first indoor temperature, step S16 is executed; if the first set temperature is less than the first indoor temperature, the process returns to step S14 to control the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in an open state. It can be understood that controlling the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in an open state may refer to: controlling the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be open, and to remain open for a certain period of time.

[0064] Step S16, controlling the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in a closed state. It can be understood that controlling the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in a closed state may mean: controlling the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be closed, and to remain closed for a certain period of time.

[0065] In this embodiment, the system will evaluate the relationship between the first set temperature and the first indoor temperature again to decide whether to continue cooling. If the first set temperature is greater than or equal to the first indoor temperature, it means that the indoor temperature has reached or is lower than the target temperature set by the user. At this time, the system will execute step S16 to turn off the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10, thereby stopping the refrigeration cycle to avoid excessive cooling and energy waste. On the contrary, if the first set temperature is less than the first indoor temperature, indicating that the indoor temperature is still higher than the expected value, the system will return to step S14 and continue to turn on the refrigeration-related components to further reduce the indoor temperature. This control logic ensures that the air-conditioning system can accurately maintain the indoor temperature within the range set by the user, while optimizing energy use and achieving efficient and energy-saving operation. In this way, the enthalpy-added air-conditioning system not only improves the user's comfort, but also reduces the impact on the environment through intelligent adjustment, reflecting the dual pursuit of energy efficiency and environmental protection in modern air-conditioning systems.

[0066] Step S17, when the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 are in the closed state, it is determined whether the enthalpy increase air-conditioning system exits the cooling mode.

[0067] If the cooling mode is exited, step S18 is executed; if the cooling mode is not exited, the process returns to step S12 to detect the first indoor temperature and control the indoor fan 12 to turn on.

[0068] Step S18, turning off the enthalpy-increasing air conditioning system.

[0069] In this embodiment, when the compressor 1, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 are all in the closed state, the system will detect whether it is necessary to exit the cooling mode. If the user or the automatic control system (air conditioning control system) determines that cooling is no longer needed, that is, the indoor temperature has reached or is lower than the set value, and there is no further cooling demand, the system will execute step S18, completely shut down the enthalpy-added air conditioning system, and enter the standby or shutdown state to save energy and extend the life of the equipment. If the cooling mode still needs to continue, the system will return to step S12, continue to monitor the indoor temperature, and control the opening of the indoor fan 12 as needed to maintain the comfort level of the indoor temperature. This design ensures that the air conditioning system can be flexibly turned on or off according to actual needs, improves energy efficiency, and also provides users with a convenient operating experience. Through such control logic, the enthalpy-added air conditioning system can intelligently respond to changes in indoor temperature, achieve efficient and energy-saving operation, meet the user's comfort requirements, and reduce the impact on the environment.

[0070] Based on the above technical solution, the enthalpy-added air conditioning system in this embodiment realizes precise control of the temperature in the cooling mode through intelligent control logic, thereby improving energy efficiency and user comfort. The system first determines the first set temperature according to the set operating parameters, then detects the indoor temperature in real time, and controls the opening of the indoor fan 12 to promote air circulation. If the first indoor temperature is higher than the first set temperature, the system will start the compressor 1, the outdoor fan 3 and the expansion valve to enhance the cooling effect. When the first indoor temperature reaches or is lower than the first set temperature, the system will automatically shut down the compressor 1 and related components to avoid excessive cooling and energy waste. In addition, the system will continue to monitor whether it is necessary to exit the cooling mode to ensure that the air conditioning system is completely shut down when cooling is not required, thereby further saving energy. This intelligent temperature adjustment and mode management not only improves the response speed and control accuracy of the air conditioning system, but also reduces unnecessary energy consumption, achieving a more environmentally friendly and economical operation.

[0071] Please refer to Figure 6 ,for Figure 4 A flowchart of another practical expression of S02 in a control method of an enthalpy-increasing air conditioning system is provided. In some embodiments, when the operation mode is the heating mode, the operation state of the enthalpy-increasing air conditioning system is controlled according to the operation mode and operation parameters mentioned in step S02, which can be specifically as follows: Figure 6 Steps shown: Step S21, when the operation mode is the heating mode, control the first interface 201 and the third interface 203 of the four-way reversing valve 2 to be connected, and the second interface 202 and the fourth interface 204 to be connected, and determine the second set temperature according to the operation parameters.

[0072] In this embodiment, when the operation mode of the enthalpy-increasing air-conditioning system is switched to the heating mode, the system will control the four-way reversing valve 2 to realize the conduction between the first interface 201 and the third interface 203, and the conduction between the second interface 202 and the fourth interface 204. This control method makes the flow direction of the refrigerant adapt to the needs of the heating cycle when the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 are in the open state: the high-temperature and high-pressure gas discharged from the compressor 1 flows into the indoor heat exchanger 13 through the first interface 201 and the third interface 203, releases heat in the indoor heat exchanger 13, and increases the indoor temperature; at the same time, the low-temperature and low-pressure liquid refrigerant throttled by the first expansion valve 9 absorbs heat and evaporates in the outdoor heat exchanger 4, and flows into the air intake 101 of the compressor 1 through the second interface 202 and the fourth interface 204.

[0073] Step S22, detecting the second indoor temperature.

[0074] Step S23, determining whether the second set temperature is greater than the second indoor temperature.

[0075] If not, execute step S26; if so, execute step S24.

[0076] Step S24, controlling the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in an open state.

[0077] In this embodiment, the system will determine whether the second set temperature set by the user is higher than the second indoor temperature currently detected to determine whether to continue heating. If the second set temperature is not greater than the second indoor temperature, it means that the indoor temperature has reached or exceeded the temperature expected by the user. At this time, the system will execute step S26 to turn off the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10, and stop the heating cycle to avoid indoor overheating and energy waste. On the contrary, if the second set temperature is higher than the second indoor temperature, it indicates that the indoor temperature has not reached the set value. The system will execute step S25 to turn on all relevant heating components and continue the heating process until the indoor temperature meets the requirements set by the user. This control logic ensures that the air-conditioning system can accurately control the indoor temperature and provide a comfortable indoor environment, while optimizing energy use and achieving efficient and energy-saving operation. In this way, the enthalpy-increasing air-conditioning system can intelligently respond to indoor temperature changes, meet the user's comfort needs, and reduce the impact on the environment.

[0078] Step S25, determining whether the second set temperature is less than or equal to the second indoor temperature.

[0079] If the second set temperature is less than or equal to the second indoor temperature, execute step S26; if the second set temperature is greater than the second indoor temperature, return to execute step S24 to control the compressor 1, indoor fan 12, outdoor fan 3, first expansion valve 9 and second expansion valve 10 to be in the open state.

[0080] Step S26, controlling the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to be in a closed state.

[0081] In this embodiment, the system will evaluate the relationship between the second set temperature and the second indoor temperature to decide whether to continue heating. If the second set temperature is less than or equal to the second indoor temperature, it indicates that the indoor temperature has reached or is lower than the target temperature set by the user. At this time, the system will execute step S27 to turn off the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10, thereby stopping the heating cycle to avoid indoor overheating and unnecessary energy consumption. On the contrary, if the second set temperature is greater than the second indoor temperature, it means that the indoor temperature is still lower than the expected value. The system will return to step S24 and continue to turn on the heating-related components to further increase the indoor temperature. This control logic ensures that the air-conditioning system can accurately maintain the indoor temperature within the range set by the user, while optimizing energy use and achieving efficient and energy-saving operation. In this way, the enthalpy-added air-conditioning system not only improves the user's comfort, but also reduces the impact on the environment through intelligent adjustment.

[0082] Step S27, when the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 are in the closed state, it is determined whether the enthalpy increase air conditioning system exits the heating mode.

[0083] If the heating mode is exited, step S28 is executed; if the cooling mode is not exited, the process returns to step S22 to detect the second indoor temperature.

[0084] Step S28, turning off the enthalpy-increasing air conditioning system.

[0085] In this embodiment, when the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 are all in the closed state, the system will detect whether it is necessary to exit the heating mode. If the user or the automatic control system determines that heating is no longer needed, that is, the indoor temperature has reached or exceeded the set value, and there is no further heating demand, the system will execute step S29, completely shut down the enthalpy-added air conditioning system, and enter the standby or shutdown state to save energy and extend the life of the equipment. If the heating mode still needs to continue, the system will return to step S22, continue to monitor the indoor temperature, and adjust the working state of the heating component as needed to maintain the comfortable level of the indoor temperature. This design ensures that the air conditioning system can be flexibly turned on or off according to actual needs, improves energy efficiency, and also provides users with a convenient operating experience. Through such control logic, the enthalpy-added air conditioning system can intelligently respond to changes in indoor temperature, achieve efficient and energy-saving operation, meet the user's comfort requirements, and reduce the impact on the environment.

[0086] Based on the above technical solution, the enthalpy-added air conditioning system in this embodiment first sets the second set temperature according to the operating parameters, and then detects the current second indoor temperature. If the second indoor temperature is lower than the second set temperature, the system will start the compressor 1, the indoor fan 12, the outdoor fan 3, the first expansion valve 9 and the second expansion valve 10 to increase the indoor temperature. When the second indoor temperature reaches or exceeds the second set temperature, the system will automatically shut down these components to prevent indoor overheating and energy waste. In addition, the system will continuously monitor whether it is necessary to exit the heating mode to ensure that the air conditioning system is shut down in time when heating is not required, thereby further saving energy. This intelligent temperature regulation and mode management not only improves the response speed and control accuracy of the air conditioning system, but also reduces unnecessary energy consumption, achieving more environmentally friendly and economical operation. In this way, the enthalpy-added air conditioning system can accurately control the indoor temperature to meet the personalized needs of users, while optimizing energy use, achieving efficient and energy-saving operation, and meeting the air conditioning needs in different environments.

[0087] It can be understood that the enthalpy-added air conditioning system also includes a controller, which stores control instructions. When the control instructions are executed by the controller, the above control method can be implemented, that is, the enthalpy-added air conditioning system can be controlled by the controller to operate according to the above control method.

[0088] This embodiment provides an electronic device, including a processor and a memory, the memory is used to store at least one instruction, and when the instruction is loaded and executed by the processor, it implements the above-mentioned control method of the enthalpy-added air-conditioning system. Its execution method and beneficial effects are similar and will not be repeated here.

[0089] An embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the control method of the above-mentioned enthalpy-added air-conditioning system is implemented. Its execution method and beneficial effects are similar and will not be repeated here.

[0090] It should be noted that although the above describes the various steps in a specific order, it does not mean that the various steps must be executed in the above specific order. In fact, some of these steps can be executed concurrently or even in a different order as long as the required functions can be achieved.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An enthalpy-increasing air conditioning system, characterized in that: include: An indoor heat exchanger, a compressor, an outdoor heat exchanger, an economizer, a first expansion valve, and a second expansion valve connected in sequence; The economizer includes a first end to a fourth end, the first end of the economizer is connected to the first branch, the second end is connected to the third end through the second expansion valve, and the fourth end is connected to the enthalpy increase port of the compressor, for replenishing air and increasing enthalpy for the compressor; the first branch is also connected to the outdoor heat exchanger, and the first branch is turned on in the cooling mode; The first end of the first expansion valve is connected to the second end of the economizer, and the second end of the first expansion valve is connected to the second branch; the second branch is also connected to the indoor heat exchanger, and the second branch is connected in the cooling mode.

2. The enthalpy-increasing air conditioning system according to claim 1, characterized in that: The enthalpy-increasing air conditioning system further includes a four-way reversing valve, wherein: The four-way reversing valve includes a first interface to a fourth interface; the first interface is connected to the exhaust port of the compressor; the second interface is connected to the outdoor heat exchanger; the third interface is connected to the indoor heat exchanger; the fourth interface is connected to the air intake port of the compressor; In cooling mode, the first interface is connected to the second interface, and the third interface is connected to the fourth interface; in heating mode, the first interface is connected to the third interface, and the second interface is connected to the fourth interface.

3. The enthalpy-increasing air conditioning system according to claim 2, characterized in that: The first end of the economizer is also connected to a third branch, the third branch is also connected to the indoor heat exchanger, and the third branch is turned on in the heating mode; The second end of the first expansion valve is also connected to the fourth branch; the fourth branch is also connected to the outdoor heat exchanger, and the fourth branch is connected in the heating mode.

4. The enthalpy-increasing air conditioning system according to claim 2, characterized in that: The enthalpy-increasing air conditioning system further comprises: A gas-liquid separator, located between the fourth interface of the four-way reversing valve and the air intake of the compressor; an indoor fan, disposed adjacent to the indoor heat exchanger, for achieving forced convection heat exchange between the indoor heat exchanger and indoor air; The outdoor fan is arranged adjacent to the outdoor heat exchanger and is used to realize forced convection heat exchange between the outdoor heat exchanger and outdoor air.

5. The enthalpy-increasing air conditioning system according to claim 3, characterized in that: The first branch is provided with a first one-way valve; the second branch is provided with a second one-way valve; the third branch is provided with a third one-way valve; and the fourth branch is provided with a fourth one-way valve.

6. The enthalpy-increasing air conditioning system according to claim 5, characterized in that: The enthalpy-increasing air conditioning system further comprises: A drying filter is located between the outdoor heat exchanger and the first one-way valve.

7. A control method for an enthalpy-increasing air conditioning system, applied to the enthalpy-increasing air conditioning system according to any one of claims 2 to 6, characterized in that: include: Detecting the operating mode and operating parameters of the enthalpy-increasing air conditioning system; The operating state of the enthalpy-increasing air-conditioning system is controlled according to the operating mode and the operating parameters.

8. The method according to claim 7, characterized in that Controlling the operating state of the enthalpy-increasing air conditioning system according to the operating mode and the operating parameters includes: When the operation mode is a cooling mode, controlling the first interface to be connected to the second interface, the third interface to be connected to the fourth interface, and determining a first set temperature according to the operation parameter; Detecting the first indoor temperature and controlling the indoor fan to start; determining whether the first set temperature is lower than the first indoor temperature; If not, return to the step of detecting the first indoor temperature and controlling the indoor fan to turn on; If yes, the compressor, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in an open state; determining whether the first set temperature is greater than or equal to the first indoor temperature; If the first set temperature is lower than the first indoor temperature, the step of controlling the compressor, the outdoor fan, the first expansion valve and the second expansion valve to be in an open state is returned to execution; If the first set temperature is greater than or equal to the first indoor temperature, the compressor, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in a closed state; When the compressor, the outdoor fan, the first expansion valve and the second expansion valve are in a closed state, determining whether the enthalpy-increasing air-conditioning system exits a cooling mode; If the cooling mode is not exited, returning to the step of detecting the first indoor temperature and controlling the indoor fan to turn on; If the cooling mode is exited, the enthalpy-increasing air-conditioning system is turned off.

9. The method according to claim 7, characterized in that: Controlling the operating state of the enthalpy-increasing air conditioning system according to the operating mode and the operating parameters includes: When the operation mode is the heating mode, controlling the first interface to be connected to the third interface, controlling the second interface to be connected to the fourth interface, and determining a second set temperature according to the operation parameters; Detecting the second indoor temperature; determining whether the second set temperature is greater than the second indoor temperature; If not, the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in a closed state; If yes, control the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve to be in an open state; determining whether the second set temperature is less than or equal to the second indoor temperature; If the second set temperature is greater than the second indoor temperature, returning to the step of controlling the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve to be in an open state; If the second set temperature is less than or equal to the second indoor temperature, the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve are controlled to be in a closed state; When the compressor, the indoor fan, the outdoor fan, the first expansion valve and the second expansion valve are in a closed state, determining whether the enthalpy-increasing air-conditioning system exits a heating mode; If the heating mode is not exited, returning to the step of detecting the second indoor temperature; If the cooling mode is exited, the enthalpy-increasing air-conditioning system is turned off.

10. An electronic device, characterized in that: include: A processor and a memory, wherein the memory is used to store at least one instruction, and when the instruction is loaded and executed by the processor, it realizes the control method of the enthalpy-added air-conditioning system as described in any one of claims 7 to 9.

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