CN107187292B

CN107187292B - Air conditioning system and control method thereof

Info

Publication number: CN107187292B
Application number: CN201710333329.3A
Authority: CN
Inventors: 陈振明; 王铭坤; 夏光辉; 肖庆; 曾婧; 胡锐鸿; 马海林; 刘聪
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-05-12
Filing date: 2017-05-12
Publication date: 2023-05-02
Anticipated expiration: 2037-05-12
Also published as: CN107187292A

Abstract

The invention discloses an air conditioning system and a control method thereof, wherein the air conditioning system comprises: a heat exchanger, a first compressor (14) and a second compressor (15); the heat exchanger is adaptively connected to a first refrigerant circulation loop (1) of the first compressor (14) to form a first air conditioning system capable of taking a first power supply as a power supply; the heat exchanger is also adaptively connected to a second refrigerant circulation loop (2) of the second compressor (15) to form a second air conditioning system which can take a second power supply as a power supply; the first power supply and the second power supply are different power supplies. The scheme of the invention can overcome the defects of short working time, large power consumption, large occupied space and the like in the prior art, and realize the beneficial effects of long working time, small power consumption and small occupied space.

Description

Air conditioning system and control method thereof

Technical Field

The invention belongs to the technical field of air conditioners, in particular to an air conditioning system and a control method thereof, and particularly relates to an air conditioning system (for example, a vehicle-mounted air conditioner or a motor home air conditioner) using alternating current and direct current power supplies and a control method of the air conditioning system.

Background

The air conditioner can regulate and control parameters such as temperature, humidity, cleanliness, speed and the like of air in the environment of a building/structure. At present, an air conditioner system of a motor home generally uses a single power supply, and the single power supply is usually a commercial power alternating current power supply, so that the defects are existed: only in places provided by a mains supply (such as private caravan camps), but in places such as remote urban and rural places, no mains supply interface is provided, and a caravan air conditioner cannot be used. Therefore, the use convenience of the air conditioner of the motor home with a single power supply is insufficient, and the requirement of random use cannot be met.

The AC/DC dual power supply integrated air conditioner only provides power supply integration, and has the defects: because the air conditioner is a single system, the capacity energy efficiency is not changed along with the AC power supply and the DC power supply. When a direct current power supply is used, the direct current energy storage is limited, so that the air conditioner can work for a short time. Otherwise, the direct current energy storage device structure is required to be large in size and heavy in weight.

In the prior art, the defects that the single-system air conditioner has short working time and high power consumption when using a direct current power supply, occupies a large space when using direct current energy storage equipment and the like exist.

Disclosure of Invention

The invention aims to overcome the defects and provide an air conditioning system which solves the problem that in the prior art, when a single-system air conditioner uses a direct current power supply, the working time is short, and the effect of prolonging the working time when the single-system air conditioner uses the direct current power supply is achieved.

The present invention provides an air conditioning system, comprising: a heat exchanger, a first compressor and a second compressor; the heat exchanger is adaptively connected to a first refrigerant circulation loop of the first compressor to form a first air conditioning system capable of taking a first power supply as a power supply; the heat exchanger is also adaptively connected in a second refrigerant circulation loop of the second compressor to form a second air conditioning system which can take a second power supply as a power supply; the first power supply and the second power supply are different power supplies.

Optionally, a heat exchange pipeline of the heat exchanger includes: at least one of the first heat exchange flow path and the second heat exchange flow path; when the heat exchange pipeline comprises the first heat exchange flow path and the second heat exchange flow path, the first heat exchange flow path is adapted to be arranged in the first refrigerant circulation loop; the second heat exchange flow path is arranged in the second refrigerant circulation loop in an adapting mode.

Optionally, the heat exchanger may include: a condenser and an evaporator; the first heat exchange flow path includes: at least one of a first condensation flow path of the condenser and a first evaporation flow path of the evaporator; the second heat exchange flow path includes: at least one of a second condensation flow path of the condenser and a second evaporation flow path of the evaporator.

Optionally, the method further comprises: at least one of the first throttle device and the second throttle device; when the system comprises any one of the first throttling device and the second throttling device, any one of the throttling devices is adaptively connected to any one of the first refrigerant circulation loop and the second refrigerant circulation loop; when the system comprises the first throttling device and the second throttling device, the first throttling device is adaptively connected in the first refrigerant circulation loop, and the second throttling device is adaptively connected in the second refrigerant circulation loop.

Optionally, the method further comprises: at least one of the first fan and the second fan; when the heat exchanger comprises a condenser and an evaporator, the first fan is arranged in an adaptive manner with the condenser; the second fan is arranged in a matched mode with the evaporator.

Optionally, when the system further includes at least one of the first throttling device and the second throttling device, any of the throttling devices includes: at least one of an electronic expansion valve and a capillary tube; when the heat exchanger comprises a condenser and an evaporator, at least one of the electronic expansion valve and the capillary tube is adaptively connected in a pipeline between the output end of the condenser and the input end of the evaporator in any refrigerant circulation loop; and/or at least one of the first fan and the second fan is a direct current fan; the direct current fan is used for providing ventilation for at least one of the first air conditioning system and the second air conditioning system.

Optionally, the method further comprises: a first input terminal and a second input terminal; wherein, first air conditioning system includes: an alternating current air conditioning system capable of taking an alternating current power supply as a first power supply; and/or, the second air conditioning system comprises: the direct-current air conditioning system can take a direct-current power supply as a second power supply; when the first air conditioning system is the alternating current air conditioning system, the first input end is respectively arranged in an adaptive manner with the alternating current power supply and a first compressor driving mechanism of the first compressor; when the second air conditioning system is the direct current air conditioning system, the second input end is respectively arranged in an adaptive manner with the direct current power supply and a second compressor driving mechanism of the second compressor.

Optionally, the method further comprises: a controller; when the system further comprises at least one of a first throttling device, a second throttling device, a first fan and a second fan, the controller is adaptively arranged with at least one of a first compressor driving mechanism of the first compressor, a second compressor driving mechanism of the second compressor, a pipeline switching device, the first throttling device, the second throttling device, a first fan driving mechanism of the first fan and a second fan driving mechanism of the second fan and is used for controlling at least one of the first compressor driving mechanism, the second compressor driving mechanism, the pipeline switching device, the first throttling device, the second throttling device, the first fan driving mechanism and the second fan driving mechanism.

Optionally, the method further comprises: an ac-dc converter; when the system further comprises a first input end, the AC-DC converter is adaptively arranged between the first input end and the controller; and/or, when the system further comprises a second input, said second input is further adapted to be arranged with said controller.

Optionally, when the heat exchange pipeline of the heat exchanger comprises a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path and the second heat exchange flow path are arranged in a split mode or an integrated mode; and/or when the first air conditioning system comprises an alternating current air conditioning system and the second air conditioning system comprises a direct current air conditioning system, the alternating current air conditioning system and the direct current air conditioning system are integrated into a whole; and/or, the first compressor comprises: a direct current variable frequency compressor or an alternating current fixed frequency compressor; and/or, the second compressor comprises: a direct current compressor.

Optionally, the method is adapted to the first air conditioning system and/or the second air conditioning system, and further comprises: at least one of a chassis component, a partition board, a four-way valve, a housing, a foam component and an electrical box; and/or the first air conditioning system and the second air conditioning system form a dual-system air conditioner; the dual-system air conditioner specifically comprises: vehicle-mounted air conditioner or house car air conditioner.

In accordance with another aspect of the present invention, in response to the above-described air conditioning system, a control method of an air conditioning system is provided, including: when the air conditioning system comprises a heat exchanger, a first compressor and a second compressor, determining whether a power supply of the air conditioning system is a first power supply or a second power supply; when the power supply is the first power supply, starting the first compressor to enable a first air conditioning system of the air conditioning system to operate; and when the power supply is a second power supply, starting the second compressor to enable a second air conditioning system of the air conditioning system to operate.

Optionally, the method further comprises: when the heat exchange pipeline of the air conditioning system comprises at least one of a first heat exchange flow path and a second heat exchange flow path, heat exchange control is carried out on at least one of the first air conditioning system and the second air conditioning system through at least one of the first heat exchange flow path and the second heat exchange flow path; and/or when the air conditioning system further comprises at least one of a first throttling device and a second throttling device, performing throttling control on the at least one of the first air conditioning system and the second air conditioning system through the at least one of the first throttling device and the second throttling device; and/or when the air conditioning system further comprises at least one of a first fan and a second fan, the ventilation control is performed on at least one of the first air conditioning system and the second air conditioning system through at least one of the first fan and the second fan.

Optionally, heat exchange control is performed on at least one of the first air conditioning system and the second air conditioning system through at least one of the first heat exchange flow path and the second heat exchange flow path, including: when the heat exchange flow path comprises the first heat exchange flow path and the second heat exchange flow path, when the power supply is the first power supply, heat exchange is carried out on the first air conditioning system through the first heat exchange flow path; and when the power supply is the second power supply, heat exchange is performed on the second air conditioning system through the second heat exchange flow path.

According to the scheme, the double-system air conditioner is formed by the first compressor which is matched with the alternating-current power supply and the second compressor which is matched with the direct-current power supply, so that the technical problems that the single-system air conditioner uses direct-current power supply equipment and the air conditioner is short in working time can be solved (for example, when the single-system air conditioner uses the direct-current power supply, the air conditioner is short in working time), the working time of the air conditioner is prolonged when the single-system air conditioner uses the direct-current power supply, and the energy-saving effect is good.

Furthermore, according to the scheme, the double-system air conditioner is formed through the first compressor which is matched with the alternating current power supply and the second compressor which is matched with the direct current power supply, so that energy storage equipment is saved, the problem that a single power supply air conditioner is not convenient to use (for example, the air conditioner with a single power supply is not convenient to use when being separated from a power supply network) can be solved, the problems of equipment cost and space occupation which are increased by the energy storage equipment can be solved, the use is convenient, and the occupied space is small.

Therefore, the scheme of the invention forms the double-system air conditioner through the first compressor which is matched with the alternating current power supply and the second compressor which is matched with the direct current power supply, solves the problem that the working time is short when the single-system air conditioner uses the direct current power supply (for example, the technical problem that the working time of the single-system air conditioner uses the direct current power supply equipment is short) in the prior art, overcomes the defects of short working time, high power consumption and large occupied space in the prior art, and realizes the beneficial effects of long working time, low power consumption and small occupied space.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical scheme of the invention is further described in detail through the drawings and the embodiments.

Drawings

FIG. 1 is a schematic diagram of an air conditioning system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an AC/DC air conditioning system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an exploded view of an embodiment of an air conditioning system (e.g., a vehicle air conditioner) according to the present invention;

FIG. 4 is a schematic diagram of an embodiment of an electric control system and an AC/DC air conditioning system in an air conditioning system according to the present invention;

fig. 5 is a flowchart illustrating a control method of an air conditioning system according to an embodiment of the invention.

In the embodiment of the present invention, reference numerals are as follows, in combination with the accompanying drawings:

1-a first refrigerant circulation circuit; 2-a second refrigerant circulation circuit; 10-chassis parts; 11-a first fan; 12-a separator; 13-a condenser; 131-a first condensing flow path of the condenser; 132-a second condensing flow path of the condenser; 14-a first compressor (direct-current variable-frequency compressor or alternating-current fixed-frequency compressor); 15-a second compressor (dc compressor); a 16-four-way valve; 17-a first throttle device; 18-a second throttling means; 19-an outer cover; a 20-foam assembly; 21-a second fan; 22-an evaporator; 221-a first evaporation flow path of the evaporator; 222-a second evaporation flow path of the evaporator; 23-electrical box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

According to an embodiment of the present invention, there is provided an air conditioning system, as shown in fig. 2, which is a schematic structural diagram of an embodiment of the system of the present invention. The air conditioning system may include: a heat exchanger, a first compressor 14 and a second compressor 15.

In an alternative example, the heat exchanger is adapted to be connected to the first refrigerant circulation circuit 1 of the first compressor 14, so as to form a first air conditioning system capable of using a first power source as a power source.

For example: the first refrigerant circulation circuit 1 of the first compressor 14 may be: a first refrigerant circulation circuit 1 from a discharge end of the first compressor 14 to a suction end of the first compressor 14.

For example: the first air conditioning system may be an ac air conditioning system capable of using an ac power source as a power supply source.

For example: when the heat exchange pipeline of the heat exchanger can comprise a heat exchange flow path, one heat exchange flow path is adapted to be connected to the first refrigerant circulation loop 1 of the first compressor 14 to form the first air conditioning system. For example: when the heat exchange pipeline of the heat exchanger can comprise more than one heat exchange flow path, one heat exchange flow path (for example, a first heat exchange flow path) of the heat exchange pipeline is adapted to be connected to the first refrigerant circulation loop 1 of the first compressor 14 to form the first air conditioning system (for example, an alternating current air conditioning system).

In an alternative example, the heat exchanger is further adapted to be connected to the second refrigerant circulation circuit 2 of the second compressor 15, so as to form a second air conditioning system capable of using a second power supply as a power supply; the first power supply and the second power supply are different power supplies.

For example: the second refrigerant circulation circuit 2 of the second compressor 15 may be: a second refrigerant circulation circuit 2 from a discharge end of the second compressor 15 to a suction end of the second compressor 15.

For example: the second air conditioning system may be a dc air conditioning system capable of using a dc power supply (for example, a low-voltage dc power supply) for setting a voltage threshold as a power supply.

For example: when the heat exchange pipeline of the heat exchanger can comprise a heat exchange flow path, one heat exchange flow path is also adaptively connected in the second refrigerant circulation loop 2 of the second compressor 15 to form the second air conditioning system. When the heat exchange pipeline of the heat exchanger can comprise more than one heat exchange flow path, one of the heat exchange flow paths (for example, a second heat exchange flow path) of the heat exchange pipeline is adapted to be connected to the second refrigerant circulation loop 2 of the second compressor 15 to form the second air conditioning system (for example, a direct current air conditioning system).

Therefore, through the heat exchanger which is adapted to the double-system air conditioner, on one hand, the space and the cost which are respectively occupied by the heat exchangers which are adapted to the double-system air conditioner can be saved, and on the other hand, the heat exchange capacity and the heat exchange effect of the double-system air conditioner can be ensured, the reliability is high, and the energy conservation performance is good.

Alternatively, the first compressor 14 may include: a direct current variable frequency compressor or an alternating current fixed frequency compressor.

For example: in the air conditioning system, the refrigerating (heating) capacity of the ac air conditioning system is high, and the compressor (for example, the first compressor 14) used is not limited and may be ac fixed frequency, dc variable frequency or the like. For example: when alternating current is used as the power source, the capacity is large.

Alternatively, the second compressor 15 may include: a direct current compressor.

For example: in this air conditioning system, the direct current air conditioning system has a small refrigerating (heating) capacity, and the compressor (for example, the second compressor 15) used is a low-pressure direct current compressor.

Therefore, the energy efficiency of the compressors under the power supply sources can be better exerted on one hand through the compressors respectively adapted to the alternating current power supply and the direct current power supply, and the reliability is high; on the other hand, the energy consumption can be reduced, and the energy-saving effect is good.

Optionally, a heat exchange pipeline of the heat exchanger may include: at least one of the first heat exchange flow path and the second heat exchange flow path.

In an alternative specific example, when the heat exchange pipeline of the heat exchanger can comprise any one of the first heat exchange flow path and the second heat exchange flow path, any one of the heat exchange flow paths is adapted to be connected in the first refrigerant circulation loop 1 when the first air conditioning system needs to be operated; when the second air conditioning system needs to be operated, any heat exchange flow path is adaptively connected to the second refrigerant circulation loop 2.

For example: different compressors are adapted to different flow paths, and the two flow paths are independently closed. The first loop (for example, the first refrigerant circulation loop 1) has large compressor, large air conditioning load and large required refrigerant quantity; and the second circuit (for example, the second refrigerant circulation circuit 2) has a small refrigerant amount. Therefore, refrigerants in the two loops cannot be influenced, the sealing independence of the two systems can be guaranteed, the performance is stable, and the working is reliable.

Therefore, at least one heat exchange flow path in the heat exchange pipeline of the heat exchanger is used for exchanging heat in the double-system air conditioner in a switching manner, the use convenience is good, the double-air conditioner system can use one heat exchange flow path, and the space and the cost occupied by the heat exchange flow path can be saved.

In an alternative specific example, when the heat exchange pipeline of the heat exchanger may include the first heat exchange flow path and the second heat exchange flow path, the first heat exchange flow path is adapted to be disposed in the first refrigerant circulation loop 1; the second heat exchange flow path is adapted to be disposed in the second refrigerant circulation circuit 2.

Therefore, the two air conditioning systems in the double-system air conditioner are respectively adapted to the at least two heat exchange flow paths, so that the two air conditioning systems can exchange heat through the respective heat exchange flow paths, the reliability of pipeline connection is high, and the respective heat exchange of the two air conditioning systems is more convenient.

In an alternative specific example, the directions of the inlets and outlets of the two heat exchange flow paths may be the same or opposite.

For example: the first refrigerant inlet and outlet of the first heat exchange flow path is arranged at one end of the heat exchanger; the second refrigerant inlet and outlet of the second heat exchange flow path is arranged at the other end of the heat exchanger.

For example: the first refrigerant outlet of the first heat exchange flow path is arranged far away from the second refrigerant outlet of the second heat exchange flow path.

For example: the first refrigerant inlet of the first heat exchange flow path is arranged far away from the second refrigerant inlet of the second heat exchange flow path.

For example: when the first heat exchange flow path may include: at least one of the first condensation channel 131 of the condenser 13 and the second condensation channel 132 of the condenser 13, a first refrigerant inlet and outlet (e.g., a first refrigerant outlet and/or a first refrigerant inlet) of the first condensation channel 131 is provided apart from a refrigerant inlet and outlet (e.g., a refrigerant outlet and/or a refrigerant inlet) of the second condensation channel 132.

Another example is: when the second heat exchange flow path may include: at least one of the first evaporation flow path 221 of the evaporator 22 and the second evaporation flow path 222 of the evaporator 22 is provided with a refrigerant inlet and outlet (e.g., a refrigerant outlet and/or a refrigerant inlet) of the first evaporation flow path 221 and a refrigerant inlet and outlet (e.g., a refrigerant outlet and/or a refrigerant inlet) of the second evaporation flow path 222.

More optionally, the first refrigerant input direction of the first heat exchange flow path is opposite to the second refrigerant input direction of the second heat exchange flow path.

More optionally, the first refrigerant output direction of the first heat exchange flow path is opposite to the second refrigerant output direction of the second heat exchange flow path.

For example: when the first heat exchange flow path may include: at least one of the first condensation flow path 131 of the condenser 13 and the second condensation flow path 132 of the condenser 13, the first refrigerant inlet/outlet direction (for example, the first refrigerant inlet direction and/or the first refrigerant outlet direction) of the first condensation flow path 131 is set away from the second refrigerant inlet/outlet direction (for example, the second refrigerant inlet direction and/or the second refrigerant outlet direction) of the second condensation flow path 132.

Another example is: when the second heat exchange flow path may include at least one of the first evaporation flow path 221 of the evaporator 22 and the second evaporation flow path 222 of the evaporator 22, a first refrigerant inlet/outlet direction (e.g., a first refrigerant inlet direction and/or a first refrigerant outlet direction) of the first evaporation flow path 221 is disposed away from a second refrigerant inlet/outlet direction (e.g., a second refrigerant inlet direction and/or a second refrigerant outlet direction) of the second evaporation flow path 222.

More optionally, the first heat exchange amount of the first heat exchange flow path is greater than the second heat exchange amount of the second heat exchange flow path.

For example: when the first heat exchanging path may include at least one of a first condensing path 131 of the condenser 13 and a second condensing path 132 of the condenser 13, a first condensing heat exchanging amount (for example, a first heat releasing amount in a first condensing process) of the first condensing path 131 is larger than a second condensing heat exchanging amount (for example, a second heat releasing amount in a second condensing process) of the second condensing path 132.

Another example is: when the second heat exchange flow path may include at least one of the first evaporation flow path 221 of the evaporator 22 and the second evaporation flow path 222 of the evaporator 22, the first evaporation heat exchange amount (for example, the first evaporation heat absorption amount in the first evaporation process) of the first evaporation flow path 221 is larger than the second evaporation heat exchange amount (for example, the second evaporation heat absorption amount in the second evaporation process) of the second evaporation flow path 222.

Therefore, through the different settings of the heat exchange quantity and the pipeline structure of the two heat exchange flow paths, the two heat exchange flow paths can exchange heat for the air conditioning systems which are respectively adapted more efficiently, the energy-saving effect is good, and the use experience of users is better promoted.

Optionally, the heat exchanger may include: a condenser 13 and an evaporator 22.

In an alternative specific example, the first heat exchange flow path may include: at least one of the first condensation flow path 131 of the condenser 13 and the first evaporation flow path 221 of the evaporator 22.

For example: the first condensation flow path 131 of the condenser 13 and the first evaporation flow path 221 of the evaporator 22 constitute the first heat exchange flow path, and are disposed in the first refrigerant circulation circuit 1.

In an alternative specific example, the second heat exchange flow path may include: at least one of the second condensation flow path 132 of the condenser 13 and the second evaporation flow path 222 of the evaporator 22.

For example: the second condensation flow path 132 of the condenser 13 and the second evaporation flow path 222 of the evaporator 22 constitute the second heat exchange flow path, and are disposed in the second refrigerant circulation circuit 2 of the second compressor 15.

For example: the first refrigerant inlet and outlet (e.g., a first refrigerant outlet and/or a first refrigerant inlet) of the first condensation channel 131 is disposed away from the second refrigerant inlet and outlet (e.g., a second refrigerant outlet and/or a second refrigerant inlet) of the second condensation channel 132.

Another example is: the first refrigerant inlet and outlet (e.g., a first refrigerant outlet and/or a first refrigerant inlet) of the first evaporation channel 221 is disposed away from the second refrigerant inlet and outlet (e.g., a second refrigerant outlet and/or a second refrigerant inlet) of the second evaporation channel 222.

Therefore, when the condenser and the evaporator are used as heat exchangers, the two heat exchange flow paths respectively adapted to the condenser and the evaporator can be more reliably adapted to the dual-system air conditioner, and the direct-current air conditioner has high energy efficiency, low energy consumption and long working time.

More optionally, when the heat exchange pipeline of the heat exchanger includes a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path and the second heat exchange flow path are provided separately or integrally.

For example: the indoor heat exchangers of the two heat exchange loops are integrally arranged, and/or the outdoor heat exchangers of the two heat exchange loops are integrally arranged; that is, two heat exchange flow paths are provided in one heat exchanger.

For example: the air conditioning system is a double-system air conditioner, and two heat exchange flow paths in heat exchangers (such as a condenser 13 and an evaporator 22) of the double system are integrated into a whole, but the two heat exchangers are arranged in a split mode.

Therefore, through the arrangement of various forms of the condenser and the evaporator, the installation mode and the volume of the heat exchanger can be flexibly arranged, so that the heat exchanger is suitable for various occasions, and has good adjustability and strong universality.

In an alternative example, the first air conditioning system and the second air conditioning system form a dual system air conditioner; the dual-system air conditioner specifically comprises: vehicle-mounted air conditioner or house car air conditioner.

For example: the air conditioning system can use an alternating current power supply or a direct current power supply, improves the use convenience of the air conditioning system (such as a vehicle-mounted air conditioner, a motor home air conditioner and the like), further solves the problem that the use convenience of the motor home air conditioner with a single power supply is insufficient, and can meet the requirements of use at any time anywhere.

From this, through two system air conditioner, can adapt to different power supplies, use the convenience better, user experience is better.

In an alternative embodiment, the method may further include: and a pipeline switching device. For example: the pipeline switching device can be a switch, a control valve and the like.

In an alternative example, the pipe switching device is respectively adapted to the heat exchanger, the first refrigerant circulation loop 1 and/or the second refrigerant circulation loop 2, and may be used to switch any one of the heat exchange flow paths to the first refrigerant circulation loop 1 when the first air conditioning system needs to be operated; or when the second air conditioning system needs to be operated, any heat exchange flow path is switched into the second refrigerant circulation loop 2.

Therefore, through the adaptation setting of the pipeline switching device and at least one heat exchange flow path, reliable switching can be performed between any heat exchange flow path and the double-system air conditioner, so that the pipeline switching is more convenient.

In an alternative embodiment, the method may further include: at least one of the first throttle device 17 and the second throttle device 18.

In an alternative example, when the system may include any one of the first throttling device 17 and the second throttling device 18, any one of the throttling devices is adapted to be connected to any one of the first refrigerant circulation circuit 1 and the second refrigerant circulation circuit 2.

In an alternative example, when the system may comprise said first throttling means 17 and said second throttling means 18, said first throttling means 17 is adapted to be connected in said first refrigerant circulation circuit 1 and said second throttling means 18 is adapted to be connected in said second refrigerant circulation circuit 2.

For example: the first throttling means 17 may be adapted to be connected in a line between the first flow path of the condenser 13 to the first flow path of the evaporator 22. The second throttling means 18 may be adapted to be connected in a line between the second flow path of the condenser 13 to the second flow path of the evaporator 22.

Therefore, the refrigerant circulation process of the double-system air conditioner can be flexibly controlled through the adaptive arrangement of the throttling device, and the reliability is high.

Alternatively, when the heat exchanger may include the condenser 13 and the evaporator 22, any one of the throttle devices may include: at least one of an electronic expansion valve and a capillary tube; at least one of the electronic expansion valve and the capillary tube is adapted to be connected in a pipeline between the output end of the condenser 13 and the input end of the evaporator 22 in any refrigerant circulation loop.

Therefore, through the throttling device in various forms, convenience and flexibility of using the throttling device are improved.

In an alternative embodiment, the method may further include: at least one of the first fan 11 and the second fan 21.

In an alternative example, when the heat exchanger may include a condenser 13 and an evaporator 22, the first fan 11 is adapted to be disposed with the condenser 13; the second fan 21 is adapted to the evaporator 22.

Therefore, through the adaptive arrangement of the fans, the effect of the dual-system air conditioner on air conditioning can be better improved, the use convenience is better, and the humanization is better.

Optionally, at least one of the first fan 11 and the second fan 21 is a direct current fan. The direct current fan can be used for providing ventilation for at least one of the first air conditioning system and the second air conditioning system.

For example: the first fan 11 and the second fan 21 are specifically fans for a single system, which are respectively adapted to the first air conditioning system or the second air conditioning system, and can individually provide ventilation for the first air conditioning system or the second air conditioning system. When any air conditioning system works, fans (for example, a first fan 11 and a second fan 21) are driven to work by a fan driving circuit of an air conditioning controller, and examples shown in fig. 3 and fig. 4 can be seen.

Another example is: the first fan 11 and the second fan 21 are specifically two fans for two systems (for example, the first fan 11 and the fan driving mechanism thereof are arranged in an adaptive manner with the condenser 13, and the second fan 21 and the fan driving mechanism thereof are arranged in an adaptive manner with the evaporator 22) which are shared fans for two systems which are arranged in an adaptive manner with the first air conditioning system and the second air conditioning system, so that ventilation can be provided for the first air conditioning system and ventilation can be provided for the second air conditioning system.

For example: in the air conditioning system, the common fan is a direct current fan.

For example: referring to the example shown in fig. 4, when a dc power supply is used, the dc power supply may supply power to the controller to operate the fan driving circuit unit, and the first fan 11 and the second fan 21 provide ventilation for the evaporator 22 and the condenser 13. Similarly, when an ac power source is used, the controller is supplied with power via the ac-dc converter to operate the fan driving circuit unit, and the first fan 11 and the second fan 21 provide ventilation for the evaporator 22 and the condenser 13. Therefore, the first fan 11 and the second fan 21 are common fans of the first air conditioning system and the second air conditioning system.

For example: the air conditioning system is a double-system air conditioner, and the fans are direct current fans shared by the double systems.

In an alternative specific example, as shown in fig. 1, when a direct current power source is used as the air conditioning power source, the direct current air conditioning system operates with a small cold (heat) load. The schematic diagram of the direct current air conditioning system is shown in fig. 2 and the exploded view is shown in fig. 3, and the direct current air conditioning system is composed of a second compressor 15, a partial flow path of a condenser 13, a second throttling device 18, a partial flow path of an evaporator 22, a fan 11 and a fan 21.

It can be seen that the air conditioning system has a large cold (hot) load when using an ac power source; the direct current power supply has smaller cold (heat) load, and solves the technical problems of short working time and the like of the direct current power supply equipment used by the single-system air conditioner.

Therefore, through the direct current fan shared by the double-system air conditioners, the space and cost occupied by the fan can be saved, the convenience of the double-system air conditioner can be improved, and the double-system air conditioner is humanized.

In an alternative embodiment, the method may further include: a first input and a second input.

In an alternative example, the first air conditioning system may include: an alternating current air conditioning system capable of taking an alternating current power supply as a first power supply; and/or, the second air conditioning system may include: the direct current air conditioning system can take the direct current power supply as a second power supply. The dc power supply may be a dc power supply with a set voltage threshold, for example: a low voltage DC power supply.

For example: referring to the example shown in fig. 1, in the air conditioning system (for example, an ac/dc power supply air conditioning system, a dual-system air conditioner, etc.), the power supply (for example, a power supply) may use ac mains supply or dc power as the power supply. The air conditioning system can improve the convenience of air conditioning use along with the popularization of energy storage equipment.

For example: the air conditioning system can use alternating current or low-voltage direct current.

For example: the air conditioning systems are double systems, namely alternating current air conditioning systems and direct current air conditioning systems respectively.

For example: the alternating current and direct current input ends are different, the compressors are driven differently, different compressors are started, and the power supply is determined by the input ends.

Alternatively, when the first air conditioning system may comprise an ac air conditioning system and the second air conditioning system may comprise a dc air conditioning system, the ac air conditioning system and the dc air conditioning system are integrated into a unitary arrangement.

For example: referring to the example shown in fig. 2, the air conditioning system may be: the compressor (i.e. the first compressor 14, which may be a direct current variable frequency compressor or an alternating current fixed frequency compressor), the direct current compressor (i.e. the second compressor 15), the evaporator and the condenser, the alternating current and direct current system, etc. are integrated.

For example: when alternating current is used as the power source, the capacity is large. When the direct current is used as a power supply, the power consumption is reduced, and the energy efficiency is higher than that of the frequency conversion air conditioner (for example, the energy efficiency is higher than that of the frequency conversion air conditioner at a low frequency band), and the energy is saved. Therefore, when the air conditioning system uses the direct current power storage equipment as the air conditioner power supply, the air conditioner has longer working time.

For example: as shown in fig. 1, when ac utility power is used as a power source of the air conditioner, the ac air conditioning system operates with a large cold (hot) load. The ac air conditioning system is schematically shown in fig. 2 and the exploded view is shown in fig. 3, and is composed of a first compressor 14, a partial flow path of a condenser 13, a first throttle device 17, an evaporator 22, a fan 11, and a fan 21.

In an alternative example, when the first air conditioning system is the ac air conditioning system, the first input is adapted to be provided with the ac power source and a first compressor drive mechanism of the first compressor 14, respectively.

For example: the first input may be an ac terminal, and may be configured to receive an ac signal from an ac power source and transmit the received ac signal to a first compressor drive mechanism of the first compressor 14.

Wherein, the alternating current power supply can be: an external commercial power; it may also be: the power supply is obtained by external and/or self-contained direct current power supply through inverter inversion of adaptive arrangement.

In an alternative example, when the second air conditioning system is the dc air conditioning system, the second input terminal is adapted to be provided with the dc power supply and a second compressor driving mechanism of the second compressor 15, respectively.

For example: the second input end may be a dc terminal, and may be configured to receive a dc signal from an external and/or self-contained dc power supply, and transmit the received dc signal to a second compressor driving mechanism of the second compressor 15.

Wherein, the direct current power supply may be: an external and/or self-contained battery; it may also be: the power supply is obtained by rectifying external commercial power through a rectifier which is arranged in an adapting way.

Optionally, when the air conditioning system may further include at least one of the first fan 11 and the second fan 21, the second input end is further adaptively connected to at least one of the first fan 11 and the second fan 21.

Therefore, the connection terminals respectively adapted to the alternating current power supply and the direct current power supply are beneficial to improving the reliability and the safety of the use of the double-system air conditioner.

In an alternative embodiment, the method may further include: and a controller.

In an alternative example, when the system may further include at least one of a pipeline switching device, a first throttling device 17, a second throttling device 18, a first fan 11, and a second fan 21, the controller may be adapted to control at least one of the first compressor driving mechanism of the first compressor 14, the second compressor driving mechanism of the second compressor 15, the pipeline switching device, the first throttling device 17, the second throttling device 18, the first fan driving mechanism of the first fan 11, and the second fan driving mechanism of the second fan 21.

The power supply of the controller can be an external and/or self-contained direct current power supply.

For example: as shown in fig. 1, when ac mains is used as a power source of an air conditioner, the operation is as follows: the ac power is input from the first input terminal, supplied to the first compressor 14 driving unit, and simultaneously subjected to ac-dc conversion (for example, ac-dc converter) to the air conditioner controller, and the controller outputs to the fan driving unit. In addition, the controller is connected with each driving unit by control signals.

Therefore, through the adaptive setting of the controller, the automatic control of the dual-system air conditioner can be realized, the humanization is good, and the reliability is high.

In an alternative embodiment, the method may further include: an ac-dc converter.

In an alternative example, when the system further comprises a first input, the ac-dc converter is adapted to be arranged between the first input and the controller.

For example: the power supply of the controller can be selected from alternating current electric signals transmitted by the first input end, and direct current electric signals obtained through conversion of the alternating current-direct current converter.

In an alternative example, when the system further comprises a second input, said second input is further adapted to be arranged with said controller.

For example: the power supply of the controller can be a direct current signal transmitted by the second input end.

For example: as shown in fig. 1, when a direct current power source is used as the air conditioning power source, the operation is as follows: the ac power is input from the second input terminal, supplied to the second compressor 15 driving unit, and simultaneously supplied to the air conditioner controller, which outputs to the fan driving unit. In addition, the controller is connected with each driving unit by control signals.

Therefore, through the adaptive arrangement of the AC-DC converter, the power can be supplied to the controller through the AC power supply, so that the reliability of the power supply of the controller is ensured on one hand, and on the other hand, the DC power can be saved when the DC power is an energy storage device, the reliability is high, and the use convenience is good.

In an alternative embodiment, the method, adapted to the first air conditioning system and/or the second air conditioning system, may further include: at least one of the chassis member 10, the partition 12, the switching means (e.g., the four-way valve 16), the housing 19, the foam assembly 20, and the electrical box 23 can be referred to as examples shown in fig. 2, 3, and 4.

For example: the switching device (for example, the four-way valve 16) can switch between cooling and heating.

For example: the switching means may comprise a first switching means and a second switching means, the first loop being adapted to the first switching means and the second loop being adapted to the second switching means. When the first air conditioning system is operated, the first switching device can switch the cooling operation or the heating operation. Similarly, when the second air conditioning system is operated, the second switching device may switch the cooling operation or the heating operation.

From this, through setting up the dual system air conditioner into the structure with on-vehicle air conditioner or car as a house air conditioner adaptation, occupation space is littleer, and the use convenience is better, and user's travelling comfort experience can obtain very big promotion.

Through a large number of experiments, the technical scheme of the embodiment is adopted, and the double-system air conditioner is formed through the first compressor which is matched with the alternating current power supply and the second compressor which is matched with the direct current power supply, so that the technical problems that the single-system air conditioner uses direct current power supply equipment and the air conditioner is short in working time can be solved (for example, when the single-system air conditioner uses the direct current power supply, the air conditioner is short in working time), the working time of the air conditioner is prolonged when the direct current power supply is used, and the energy-saving effect is good.

According to an embodiment of the present invention, there is also provided a control method of an air conditioning system corresponding to the air conditioning system. See FIG. 5 for a schematic flow chart of an embodiment of the method of the present invention. The control method of the air conditioning system may include:

in step S110, when the above-described air conditioning system may include the heat exchanger, the first compressor 14, and the second compressor 15, it is determined whether the power supply of the air conditioning system is the first power supply or the second power supply.

Step S120, when the power supply is the first power supply, the first compressor 14 is started to operate the first air conditioning system of the air conditioning system.

And step S130, when the power supply is the second power supply, starting the second compressor 15 to operate the second air conditioning system of the air conditioning system.

In an alternative embodiment, the method may further include: when the heat exchange pipeline of the air conditioning system can further comprise at least one of a first heat exchange flow path and a second heat exchange flow path, heat exchange control is carried out on at least one of the first air conditioning system and the second air conditioning system through at least one of the first heat exchange flow path and the second heat exchange flow path.

In an alternative example, the heat exchange control of at least one of the first air conditioning system and the second air conditioning system through at least one of the first heat exchange flow path and the second heat exchange flow path may include: when the air conditioning system further comprises a pipeline switching device and the heat exchange pipeline of the heat exchanger comprises any one of the first heat exchange flow path and the second heat exchange flow path, switching any one of the heat exchange flow paths to be connected with the first air conditioning system in an adapting way when the power supply is the first power supply through the pipeline switching device; and when the power supply is a second power supply, switching any heat exchange flow path to be connected in the second air conditioning system in an adaptive manner.

For example: when the heat exchange pipeline of the heat exchanger can comprise any one of the first heat exchange flow path and the second heat exchange flow path, and when the first air conditioning system needs to be operated, any one of the heat exchange flow paths is adaptively connected in the first refrigerant circulation loop 1; when the second air conditioning system needs to be operated, any heat exchange flow path is adaptively connected to the second refrigerant circulation loop 2.

In an alternative example, the heat exchange control of at least one of the first air conditioning system and the second air conditioning system through at least one of the first heat exchange flow path and the second heat exchange flow path may include: when the heat exchange pipeline of the heat exchanger can comprise the first heat exchange flow path and the second heat exchange flow path, and when the power supply is the first power supply, heat exchange is carried out on the first air conditioning system through the first heat exchange flow path; and when the power supply is the second power supply, heat exchange is performed on the second air conditioning system through the second heat exchange flow path.

For example: the heat exchanger may include: a condenser 13 and an evaporator 22. The first condensation flow path 131 of the condenser 13 and the first evaporation flow path 221 of the evaporator 22 constitute the first heat exchange flow path, and are adapted to be provided in the first refrigerant circulation circuit 1. The second condensation flow path 132 of the condenser 13 and the second evaporation flow path 222 of the evaporator 22 constitute the second heat exchange flow path, and are disposed in the second refrigerant circulation circuit 2 of the second compressor 15.

In an alternative embodiment, the method may further include: when the air conditioning system may further include at least one of the first throttling device 17 and the second throttling device 18, the at least one of the first air conditioning system and the second air conditioning system is throttled by the at least one of the first throttling device 17 and the second throttling device 18.

In an alternative embodiment, the method may further include: when the air conditioning system may further include at least one of the first fan 11 and the second fan 21, ventilation control is performed on at least one of the first air conditioning system and the second air conditioning system by at least one of the first fan 11 and the second fan 21.

Since the processing and functions implemented by the control method of the present embodiment basically correspond to the embodiments, principles and examples of the air conditioning system shown in fig. 1 to 4, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.

Through a large number of experiments, the technical scheme of the invention is adopted, the first compressor which is matched with the alternating current power supply and the second compressor which is matched with the direct current power supply form the double-system air conditioner, so that energy storage equipment is saved, the problem that a single power supply air conditioner is not convenient to use (for example, the air conditioner with a single power supply is not convenient to use when being separated from a power supply network) can be solved, the problems of equipment cost and space occupation which are increased by the energy storage equipment can be solved, the use is convenient, and the occupied space is small.

In summary, it is readily understood by those skilled in the art that the above-described advantageous ways can be freely combined and superimposed without conflict.

The above description is only an example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A control method of an air conditioning system, the air conditioning system comprising: a heat exchanger, a first compressor (14) and a second compressor (15); the heat exchanger is adaptively connected to a first refrigerant circulation loop (1) of the first compressor (14) to form a first air conditioning system capable of taking a first power supply as a power supply; the heat exchanger is also adaptively connected to a second refrigerant circulation loop (2) of the second compressor (15) to form a second air conditioning system which can take a second power supply as a power supply; the first power supply and the second power supply are different power supplies; the heat exchange pipeline of the heat exchanger comprises: at least one of the first heat exchange flow path and the second heat exchange flow path; when the heat exchange pipeline comprises the first heat exchange flow path and the second heat exchange flow path, the first heat exchange flow path is adapted to be arranged in the first refrigerant circulation loop (1); the second heat exchange flow path is arranged in the second refrigerant circulation loop (2) in an adapting way;

The air conditioning system further comprises: at least one of the first throttle device (17) and the second throttle device (18); wherein, when the system comprises any one of the first throttling device (17) and the second throttling device (18), any one of the throttling devices is adapted to be connected in any one of the first refrigerant circulation loop (1) and the second refrigerant circulation loop (2); when the system comprises the first throttling device (17) and the second throttling device (18), the first throttling device (17) is adaptively connected in the first refrigerant circulation loop (1), and the second throttling device (18) is adaptively connected in the second refrigerant circulation loop (2);

the air conditioning system further comprises: at least one of the first fan (11) and the second fan (21); wherein, when the heat exchanger comprises a condenser (13) and an evaporator (22), the first fan (11) is arranged in a fit with the condenser (13); the second fan (21) is arranged in a matching way with the evaporator (22);

the control method of the air conditioning system comprises the following steps:

when the air conditioning system comprises a heat exchanger, a first compressor (14) and a second compressor (15), determining whether a power supply of the air conditioning system is a first power supply or a second power supply;

When the power supply is the first power supply, starting the first compressor (14) to enable a first air conditioning system of the air conditioning system to operate;

when the power supply is a second power supply, starting the second compressor (15) to enable a second air conditioning system of the air conditioning system to operate;

the control method of the air conditioning system further comprises the following steps:

when the heat exchange pipeline of the air conditioning system comprises at least one of a first heat exchange flow path and a second heat exchange flow path, heat exchange control is carried out on at least one of the first air conditioning system and the second air conditioning system through at least one of the first heat exchange flow path and the second heat exchange flow path;

when the air conditioning system further comprises at least one of a first throttling device (17) and a second throttling device (18), throttling control is carried out on at least one of the first air conditioning system and the second air conditioning system through at least one of the first throttling device (17) and the second throttling device (18);

when the air conditioning system further comprises at least one of a first fan (11) and a second fan (21), at least one of the first air conditioning system and the second air conditioning system is subjected to ventilation control through at least one of the first fan (11) and the second fan (21).

2. The control method of an air conditioning system according to claim 1, wherein the heat exchanger includes: a condenser (13) and an evaporator (22);

the first heat exchange flow path includes: at least one of a first condensation flow path (131) of the condenser (13) and a first evaporation flow path (221) of the evaporator (22);

the second heat exchange flow path includes: at least one of a second condensation flow path (132) of the condenser (13) and a second evaporation flow path (222) of the evaporator (22).

3. A control method of an air conditioning system according to claim 1, characterized in that when the system further comprises at least one of a first throttling means (17), a second throttling means (18), any of said throttling means comprises: at least one of an electronic expansion valve and a capillary tube;

when the heat exchanger comprises a condenser (13) and an evaporator (22), at least one of the electronic expansion valve and the capillary tube is adapted to be connected in a pipeline between the output end of the condenser (13) and the input end of the evaporator (22) in any refrigerant circulation loop;

and/or the number of the groups of groups,

at least one of the first fan (11) and the second fan (21) is a direct current fan;

The direct current fan is used for providing ventilation for at least one of the first air conditioning system and the second air conditioning system.

4. A control method of an air conditioning system according to any of claims 1 to 3, further comprising: a first input terminal and a second input terminal; wherein, the liquid crystal display device comprises a liquid crystal display device,

the first air conditioning system includes: an alternating current air conditioning system capable of taking an alternating current power supply as a first power supply; and/or, the second air conditioning system comprises: the direct-current air conditioning system can take a direct-current power supply as a second power supply;

when the first air conditioning system is the alternating current air conditioning system, the first input end is respectively arranged in an adaptive manner with the alternating current power supply and a first compressor driving mechanism of the first compressor (14);

when the second air conditioning system is the direct current air conditioning system, the second input end is respectively arranged in an adaptive manner with the direct current power supply and a second compressor driving mechanism of the second compressor (15).

5. A control method of an air conditioning system according to any of claims 1 to 3, further comprising: a controller and a pipeline switching device;

when the system further comprises at least one of a first throttling device (17), a second throttling device (18), a first fan (11) and a second fan (21),

The controller is arranged in a matching way with at least one of a first compressor driving mechanism of the first compressor (14), a second compressor driving mechanism of the second compressor (15), the pipeline switching device, the first throttling device (17), the second throttling device (18), a first fan driving mechanism of the first fan (11) and a second fan driving mechanism of the second fan (21),

is used for controlling at least one of the first compressor driving mechanism, the second compressor driving mechanism, the pipeline switching device, the first throttling device (17), the second throttling device (18), the first fan driving mechanism and the second fan driving mechanism.

6. The control method of an air conditioning system according to claim 4, further comprising: a controller and a pipeline switching device;

7. The control method of an air conditioning system according to claim 5, further comprising: an ac-dc converter;

when the system further comprises a first input end, the AC-DC converter is adaptively arranged between the first input end and the controller;

and/or the number of the groups of groups,

when the system further comprises a second input, said second input is also arranged in adaptation with said controller.

8. The control method of an air conditioning system according to claim 6, further comprising: an ac-dc converter;

and/or the number of the groups of groups,

9. The control method of an air conditioning system according to any one of claims 1 to 3, 6 to 8, wherein when the heat exchange line of the heat exchanger includes a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path and the second heat exchange flow path are provided separately, or provided integrally; and/or the number of the groups of groups,

When the first air conditioning system comprises an alternating current air conditioning system and the second air conditioning system comprises a direct current air conditioning system, the alternating current air conditioning system and the direct current air conditioning system are integrated;

and/or the number of the groups of groups,

the first compressor (14) comprises: a direct current variable frequency compressor or an alternating current fixed frequency compressor; and/or the number of the groups of groups,

the second compressor (15) comprises: a direct current compressor.

10. The method according to claim 4, wherein when the heat exchange line of the heat exchanger includes a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path and the second heat exchange flow path are provided separately, or provided integrally; and/or the number of the groups of groups,

and/or the number of the groups of groups,

the second compressor (15) comprises: a direct current compressor.

11. The method according to claim 5, wherein when the heat exchange line of the heat exchanger includes a first heat exchange flow path and a second heat exchange flow path, the first heat exchange flow path and the second heat exchange flow path are provided separately, or provided integrally; and/or the number of the groups of groups,

and/or the number of the groups of groups,

the second compressor (15) comprises: a direct current compressor.

12. The control method of an air conditioning system according to one of claims 1 to 3, 6 to 8, 10, 11, characterized by being adapted to the first air conditioning system and/or the second air conditioning system, further comprising:

at least one of a chassis component (10), a partition board (12), a four-way valve (16), a housing (19), a foam component (20) and an electrical box (23);

and/or the number of the groups of groups,

the first air conditioning system and the second air conditioning system form a double-system air conditioner; the dual-system air conditioner specifically comprises: vehicle-mounted air conditioner or house car air conditioner.

13. The control method of an air conditioning system according to claim 4, characterized by being adapted to the first air conditioning system and/or the second air conditioning system, further comprising:

And/or the number of the groups of groups,

14. The control method of an air conditioning system according to claim 5, characterized by being adapted to the first air conditioning system and/or the second air conditioning system, further comprising:

and/or the number of the groups of groups,

15. The control method of an air conditioning system according to claim 9, characterized by being adapted to the first air conditioning system and/or the second air conditioning system, further comprising:

and/or the number of the groups of groups,

16. The method of claim 1, wherein heat exchange control of at least one of the first air conditioning system and the second air conditioning system via at least one of the first heat exchange flow path and the second heat exchange flow path comprises:

When the heat exchange flow path includes the first heat exchange flow path and the second heat exchange flow path,

when the power supply is the first power supply, heat exchange is performed on the first air conditioning system through the first heat exchange flow path; and when the power supply is the second power supply, heat exchange is performed on the second air conditioning system through the second heat exchange flow path.