A row-and-resident integrated air conditioning system and its control method

By using a combination of four-way valves and plumbing heat exchangers in the vehicle air conditioning system, the integration of cooling and heating during driving and parking is achieved, and the problem of parking heating and driving cooling cannot be integrated in the prior art is solved, the compatibility and reliability of the system are improved, and cost and environmental pollution are reduced.

CN115071374BActive Publication Date: 2025-07-18GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Application Number
CN202210850214.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-19
Publication Date
2025-07-18
Estimated Expiration
2042-07-19

AI Technical Summary

Technical Problem

The existing vehicle air conditioning system cannot achieve parking heating and driving cooling in one piece, resulting in increased costs and reduced reliability, and does not comply with traffic safety regulations.

Method used

The air conditioning circulation circuit is formed by a compressor, four-way valve, outside heat exchanger, inside heat exchanger and throttle valve. The heating function is realized through the four-way valve changing the flow direction of the refrigerant, combined with the plumbing heat exchanger and the water tank to form a heating circuit. The vehicle generator and external generator are used to charge the power storage unit, and the compressor and water pump are controlled to open and close the compressor and the water pump to realize the switching between driving refrigeration, parking heating and cooling.

Benefits of technology

It realizes the integration of refrigeration and heating during driving and parking, reduces costs, improves reliability and comfort, reduces refrigerant leakage and failure rates, saves transportation costs, and reduces environmental pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides an integrated air conditioning system for driving and parking and a control method thereof, wherein the integrated air conditioning system for driving and parking comprises: a compressor, a four-way valve, an external heat exchanger, an internal heat exchanger and a throttle valve, wherein the compressor, the four-way valve, the external heat exchanger, the internal heat exchanger and the throttle valve are connected to form an air conditioning circulation loop, one end of the compressor is connected to the E port of the four-way valve, and the other end is connected to the C port of the four-way valve, the external heat exchanger is connected to the S port of the four-way valve, and the internal heat exchanger is connected to the D port of the four-way valve; when cooling during driving, the D port of the four-way valve is connected to the C port, and the E port is connected to the S port; when heating during parking, the D port of the four-way valve is connected to the S port, and the E port is connected to the C port. The defect that the vehicle air conditioning system in the prior art cannot realize parking heating and driving cooling in an integrated manner can be overcome.
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Description

Technical Field

[0001] The present invention relates to the technical field of vehicle air conditioners, and particularly relates to an integrated driving and parking air conditioning system and a control method thereof. Background Art

[0002] Traditional truck vehicle air conditioners rely on the engine to drive the compressor to achieve refrigeration, and use the engine waste heat for heating. If the original vehicle air conditioner is used during rest and loading stops on the way, not only is the fuel consumption high, but there are also associated risks such as exhaust pollution and engine wear. To solve this problem, 24V electric parking air conditioners have been continuously introduced in the market, mainly in the installation methods of household split type and top-mounted integrated type, but most of them are single-cooling type and cannot solve the heating demand of users during parking. The electric parking air conditioner is powered by a battery and is not affected even during long-term parking, so it has almost become an essential product in the truck market. However, the electric parking air conditioner and the original vehicle air conditioner are independent systems, which undoubtedly increases the cost for the vehicle manufacturer. At the same time, installing a parking air conditioner later also violates the regulations of the Road Traffic Safety Law. Therefore, an integrated driving and parking truck air conditioner is the ultimate trend.

[0003] The industry has proposed an integrated driving and parking air conditioning solution combined with the whole vehicle to solve the market pain points of the above-mentioned electric parking air conditioners. The patent "CN 113022253" proposes to achieve partial component sharing by adding an electric compressor and a four-way valve, using the original vehicle air conditioner box and condenser, and simultaneously realizing the heating function during parking. However, such a solution adds an electric compressor, and due to easy leakage, the reliability of the air conditioning system decreases and the failure rate is high. Summary of the Invention

[0004] Therefore, the present invention provides an integrated driving and parking air conditioning system and a control method thereof, which can overcome the defect that the vehicle air conditioning system in the prior art cannot integrally realize parking heating and driving refrigeration.

[0005] To solve the above problems, the present invention provides an integrated driving and parking air conditioning system, which includes:

[0006] A compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, and a throttle valve. The compressor, the four-way valve, the outdoor heat exchanger, the indoor heat exchanger, and the throttle valve are connected to form an air conditioning cycle circuit. One end of the compressor communicates with port E of the four-way valve, and the other end communicates with port C of the four-way valve. The outdoor heat exchanger communicates with port S of the four-way valve, and the indoor heat exchanger communicates with port D of the four-way valve;

[0007] During refrigeration while driving, port D and port C of the four-way valve are conducted, and port E and port S are conducted; during heating while parking, port D and port S of the four-way valve are conducted, and port E and port C are conducted.

[0008] In some embodiments, it further includes a water heating heat exchanger and a water tank. The water tank can exchange heat with the vehicle engine, and the water heating heat exchanger and the water tank are connected to form a heating circuit. When driving, the air conditioning cycle circuit is used for refrigeration, and the heating circuit is used for heating. When parking, both refrigeration and heating use the air conditioning cycle circuit.

[0009] In some embodiments, a water pump is arranged between the water heating heat exchanger and the water tank. The water pump can provide power for the water in the heating circuit to enable the water circulation between the water tank and the water heating heat exchanger.

[0010] In some embodiments, it further includes a circulation air duct. One end of the circulation air duct communicates with the outside of the vehicle, and the other end communicates with the inside of the vehicle. The water heating heat exchanger and the in-vehicle heat exchanger are located in the circulation air duct and exchange heat with the air in the circulation air duct. A centrifugal fan is arranged in the circulation air duct, and the centrifugal fan can transport the outside air into the vehicle through the circulation air duct.

[0011] In some embodiments, the in-vehicle heat exchanger is located at one end of the circulation air duct close to the circulation air duct, the centrifugal fan is located at the other end of the circulation air duct, and the water heating heat exchanger is located between the in-vehicle heat exchanger and the centrifugal fan.

[0012] In some embodiments, when refrigerating during parking, the D port and the C port of the four-way valve are conducted, and the E port and the S port are conducted. The refrigerant sequentially passes through the compressor, the four-way valve, the outside-vehicle heat exchanger, the throttle valve and the in-vehicle heat exchanger to form a refrigeration cycle circuit.

[0013] In some embodiments, the air conditioning cycle circuit is driven by a power supply assembly. The power supply assembly includes a power storage unit. The power storage unit is connected with an on-vehicle generator and an external generator. The on-vehicle generator and the external generator can charge the power storage unit. The power storage unit is connected with the compressor, and the power storage unit can drive the compressor to operate.

[0014] In some embodiments, a drive box is arranged between the power storage unit and the compressor. The drive box can detect the real-time voltage of the power storage unit and control to turn off or on the external generator according to the real-time voltage of the power storage unit.

[0015] In some embodiments, when refrigerating during driving, the on-vehicle generator charges the power storage unit, the power storage unit drives the compressor to operate, and the external generator is turned off. When heating during parking and when refrigerating during parking, the on-vehicle generator is turned off, and the external generator can charge the power storage unit.

[0016] The present invention also provides a control method for the integrated driving and parking air conditioning system described in any one of the preceding items. The integrated driving and parking air conditioning system includes a driving refrigeration mode, a driving heating mode, a parking refrigeration mode, and a parking heating mode;

[0017] A judgment step of judging the current mode of the integrated driving and parking air conditioning system;

[0018] A control step. When the integrated driving and parking air conditioning system is in the driving refrigeration mode and the parking refrigeration mode, control to turn on the compressor and the throttle valve, so that port D of the four-way valve is communicated with port C, and port E and port S are communicated; when the integrated driving and parking air conditioning system is in the parking heating mode, control to turn on the compressor and the throttle valve, so that port D of the four-way valve is communicated with port S, and port E and port C are communicated.

[0019] In some embodiments, when a water pump is included, the integrated driving and parking air conditioning system further includes a driving heating mode, a parking refrigeration and heating mode;

[0020] When the integrated driving and parking air conditioning system is in the driving heating mode, control to turn off the compressor and turn on the water pump to make the heating circuit operate; when the integrated driving and parking air conditioning system is in the parking heating mode, control to turn off the water pump.

[0021] In some embodiments, when an on-vehicle generator, a power storage unit, and an external generator are included,

[0022] When the integrated driving and parking air conditioning system is in the driving refrigeration mode, control to turn on the on-vehicle generator and turn off the external generator; when the integrated driving and parking air conditioning system is in the driving heating mode, control to turn off the on-vehicle generator and the external generator; when the integrated driving and parking air conditioning system is in the parking refrigeration mode and the parking heating mode, control to turn on or off the external generator according to the real-time voltage of the power storage unit.

[0023] In some embodiments, controlling to turn on or off the external generator according to the real-time voltage of the power storage unit is specifically implemented as follows:

[0024] A detection step: detecting the real-time voltage U of the power storage unit;

[0025] A judgment step of judging the relationship between the real-time voltage U of the power storage unit and a preset voltage U1;

[0026] A control step. When U≤U1, control to turn on the external generator so that the external generator charges the power storage unit; when U>U1, control to turn off the external generator.

[0027] In some embodiments, the value range of the preset voltage U1 is 21.5V - 23.5V.

[0028] A traveling and parking integrated air conditioning system and a control method thereof provided by the present invention use the original vehicle-mounted compressor. By changing the refrigerant flow direction through a four-way valve, the heating function is achieved. With one compressor, the heating effect can be realized both during driving and parking, without the need to additionally increase the compressor. All the original vehicle air conditioning components can be shared, greatly improving compatibility, without adding devices, effectively reducing costs, and basically having no refrigerant leakage. The number of parts is small, the reliability is greatly improved, and the failure rate is greatly reduced. The heating energy efficiency is more than 4 times that of fuel heating, saving transportation costs, reducing environmental pollution, and greatly improving comfort. It realizes the integrated temperature adjustment of vehicle traveling and parking, and can overcome the defect that the vehicle air conditioning system in the prior art cannot integrally achieve parking heating and driving refrigeration. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the traveling and parking integrated air conditioning system according to an embodiment of the present invention;

[0030] Figure 2 It is a partial enlarged view of the traveling and parking integrated air conditioning system according to an embodiment of the present invention.

[0031] The reference signs are shown as:

[0032] 1. Compressor; 2. Four-way valve; 3. Outdoor heat exchanger; 4. Throttle valve; 5. Indoor heat exchanger; 6. Water heating heat exchanger; 7. Centrifugal fan; 8. Fan; 9. Drive box; 10. Power storage unit; 11. Vehicle-mounted generator; 12. External generator; 13. Water tank; 14. Water pump. Detailed Embodiments

[0033] Refer to in combination Figures 1 to 2As shown, according to an embodiment of the present invention, a combined vehicle driving and parking air conditioning system is provided, including: a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an indoor heat exchanger 5, and a throttle valve 4. The compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the indoor heat exchanger 5, and the throttle valve 4 are connected to form an air conditioning circulation loop. One end of the compressor 1 is connected to the E port of the four-way valve 2, and the other end is connected to the C port of the four-way valve 2. The outdoor heat exchanger 3 is connected to the S port of the four-way valve 2, and the indoor heat exchanger 5 is connected to the D port of the four-way valve 2. During refrigeration while driving, the D port and the C port of the four-way valve 2 are conducted, and the E port and the S port are conducted. During heating while parking, the D port and the S port of the four-way valve 2 are conducted, and the E port and the C port are conducted. In this technical solution, the outdoor heat exchanger 3 is equipped with a fan 8, and the fan 8 is an outdoor condensing fan. The compressor 1 is the original vehicle-mounted compressor. By changing the refrigerant flow direction through the four-way valve 2, the heating function is realized. With one compressor, the heating function can be achieved both while driving and while parking without the need to additionally increase the compressor. All the original vehicle air conditioning components can be shared, greatly improving the compatibility. No additional devices can be added, effectively reducing the cost, and there is basically no refrigerant leakage. The number of parts is small, the reliability is greatly improved, and the failure rate is greatly reduced. The heating energy efficiency is more than 4 times that of fuel heating, saving transportation costs, reducing environmental pollution, and greatly improving the comfort, realizing the combined vehicle driving and parking temperature regulation. During refrigeration while driving and during refrigeration while parking, the centrifugal fan 7 and the outdoor condensing fan 8 are started and operated according to the given wind speed. The compressor 1 is powered on and started. The low-temperature and low-pressure gas enters the compressor 1 from the suction port of the compressor, is compressed into a high-temperature and high-pressure gas, and then reaches the four-way valve 2 through the pipeline. It reaches the outdoor heat exchanger 3, and after heat exchange with the environment, it is cooled into a high-temperature and high-pressure liquid. Then it reaches the throttle valve 4 through the pipeline to be throttled and depressurized into a low-temperature and low-pressure liquid. Then it exchanges heat with the cockpit air through the indoor heat exchanger 5, is evaporated into a low-temperature and low-pressure gas after suction, and then returns to the electric compressor 1 through the four-way valve 2 to complete the refrigeration cycle. During heating while driving, when the heating start command is received, the electric compressor 1 is not started, and the refrigerant system does not circulate. At this time, the centrifugal fan 7 of the air conditioning box is started, and the water pump 14 is started to pump the high-temperature hot water from the engine radiator 13 to the cockpit water heating heat exchanger 6 to exchange heat with the cockpit air. The cockpit temperature rises. At this time, the high-temperature hot water becomes low-temperature cooling water after cooling and returns to the engine radiator 13 to complete a heating cycle. During heating while parking, the centrifugal fan 7 of the air conditioning box and the outdoor condensing fan 8 are started. The low-temperature and low-pressure gas enters the electric compressor 1 from the suction port of the compressor, is compressed into a high-temperature and high-pressure gas, and then reaches the four-way valve 2 through the pipeline. Then it passes through the indoor heat exchanger 5, and after heat exchange with the cockpit air, it is cooled into a high-temperature and high-pressure liquid. Then it reaches the throttle valve 4 through the pipeline to be throttled and depressurized into a low-temperature and low-pressure liquid. Then it exchanges heat with the outdoor air through the outdoor heat exchanger 3, is evaporated into a low-temperature and low-pressure gas after suction, and then returns to the electric compressor 1 through the four-way valve 2 to complete the heating cycle.

[0034] In a specific embodiment, the integrated in-line air conditioning system further includes a water heating heat exchanger 6 and a water tank 13. The water tank 13 can exchange heat with the vehicle engine. The water heating heat exchanger 6 and the water tank 13 are connected to form a heating circuit. When driving, the air conditioning cycle circuit is used for refrigeration, and the heating circuit is used for heating. When parking, both refrigeration and heating use the air conditioning cycle circuit. Specifically, a water pump 14 is provided between the water heating heat exchanger 6 and the water tank 13. The water pump 14 can provide power for the water in the heating circuit to enable the water circulation between the water tank 13 and the water heating heat exchanger 6. In this technical solution, the air conditioning cycle circuit is used for refrigeration when driving, and both refrigeration and heating use the air conditioning cycle circuit when parking. When driving, the principle of using the water tank 13 for heating is adopted, and the high-temperature water in the vehicle engine water tank 13 is transported to the water heating heat exchanger to exchange heat with the air in the cockpit, so as to generate a heating effect in the cockpit, reasonably utilize energy, and realize the secondary utilization of the hot water in the engine water tank 13. The water pump 14 provides power for the heating circuit to ensure the heating efficiency.

[0035] In a specific embodiment, a circulation air duct is further included. One end of the circulation air duct communicates with the outside of the vehicle, and the other end communicates with the inside of the vehicle. The water heating heat exchanger 6 and the in-vehicle heat exchanger 5 are located in the circulation air duct and exchange heat with the air in the circulation air duct. A centrifugal fan 7 is provided in the circulation air duct. The centrifugal fan 7 can transport the outside air into the vehicle through the circulation air duct. In this technical solution, through the centrifugal fan 7 and the circulation air duct, the air outside and inside the vehicle can circulate, and the air in the circulation air duct can exchange heat with the water heating heat exchanger 6 and the in-vehicle heat exchanger 5, so as to adjust the temperature in the circulation air duct and thus adjust the temperature inside the vehicle.

[0036] In a specific embodiment, the in-vehicle heat exchanger 5 is located at one end of the circulation air duct close to the circulation air duct, the centrifugal fan 7 is located at the other end of the circulation air duct, and the water heating heat exchanger 6 is located between the in-vehicle heat exchanger 5 and the centrifugal fan 7. In this technical solution, the in-vehicle heat exchanger 5 is located at one end of the circulation air duct close to the circulation air duct, the centrifugal fan 7 is located at the other end of the circulation air duct, and the water heating heat exchanger 6 is located between the in-vehicle heat exchanger 5 and the centrifugal fan 7, which ensures the heat exchange efficiency between the in-vehicle heat exchanger 5 and the water heating heat exchanger 6.

[0037] In a specific embodiment, when cooling during parking, the D port of the four-way valve 2 is connected to the C port, the E port is connected to the S port, and the refrigerant passes through the compressor 1, the four-way valve 2, the external heat exchanger 3, the throttle valve 4 and the internal heat exchanger 5 in sequence to form a refrigeration cycle. In this technical solution, when cooling during parking, the D port of the four-way valve 2 is connected to the C port, the E port is connected to the S port, so that the refrigerant passes through the compressor 1, the four-way valve 2, the external heat exchanger 3, the throttle valve 4 and the internal heat exchanger 5 in sequence to form a refrigeration cycle, thereby achieving the parking cooling effect.

[0038] In a specific embodiment, the air conditioning circulation loop is driven by a power supply component, and the power supply component includes a power storage unit 10. The power storage unit 10 is connected to a vehicle-mounted generator 11 and an external generator 12. The vehicle-mounted generator 11 and the external generator 12 can charge the power storage unit 10. The power storage unit 10 is connected to the compressor 1, and the power storage unit 10 can drive the compressor 1 to operate. In this technical solution, the vehicle-mounted generator 11 is the original vehicle-mounted generator, and the external generator 12 is an external gasoline generator. The vehicle-mounted generator 11 and the external generator 12 are used to charge the power storage unit 10 to ensure the power of the power storage unit 10, so that the air conditioning system can work normally and permanently when driving or parking.

[0039] In a specific embodiment, a driving box 9 is provided between the power storage unit 10 and the compressor 1, and the driving box 9 can detect the real-time voltage of the power storage unit 10, and control the closing or opening of the external generator 12 according to the real-time voltage of the power storage unit 10. In this technical solution, the real-time voltage of the power storage unit 10 is judged by the driving box 9, and the opening or closing of the external generator 12 is controlled, so as to ensure that the air conditioner runs for a long time when the vehicle is parked, and the power storage unit 10 will not be deeply discharged to reduce its life.

[0040] In a specific embodiment, when cooling during driving, the on-board generator 11 charges the power storage unit 10, the power storage unit 10 drives the compressor 1 to operate, and the external generator 12 is turned off; when heating during parking and cooling during parking, the on-board generator 11 is turned off, and the external generator 12 can charge the power storage unit 10. In this technical solution, the on-board generator 11 is the original on-board generator. When the vehicle is driving, the engine is working, the on-board generator 11 charges the power storage unit 10, the power storage unit 10 drives the air conditioning circulation loop to operate, and the external generator 12 is an external gasoline generator. When parking, the on-board generator is shut down. When the power storage unit 10 is insufficient, the external generator 12 is started, and the external generator is used to provide power to the power storage unit to ensure the normal operation of the system.

[0041] The present invention also provides a control method for a combined driving and parking air conditioning system, which includes a driving refrigeration mode, a driving heating mode, a parking refrigeration mode, and a parking heating mode;

[0042] A judgment step, for judging the current mode of the combined driving and parking air conditioning system;

[0043] A control step, when the combined driving and parking air conditioning system is in the driving refrigeration mode and the parking refrigeration mode, controlling to turn on the compressor 1 and the throttle valve 4, making the D port of the four-way valve 2 communicate with the C port, and the E port and the S port communicate; when the combined driving and parking air conditioning system is in the parking heating mode, controlling to turn on the compressor 1 and the throttle valve 4, making the D port of the four-way valve 2 communicate with the S port, and the E port and the C port communicate.

[0044] Specifically, when including a water pump 14, the combined driving and parking air conditioning system further includes a driving heating mode, a parking refrigeration and parking heating mode;

[0045] When the combined driving and parking air conditioning system is in the driving heating mode, controlling to turn off the compressor 1 and turn on the water pump 14 to make the heating circuit operate; when the combined driving and parking air conditioning system is in the parking heating mode, controlling to turn off the water pump 14.

[0046] In this technical solution, when the combined driving and parking air conditioning system is in the driving heating mode, the principle of using the water tank 13 for heating is adopted, and the high-temperature water of the vehicle engine water tank 13 is conveyed to the water heating heat exchanger to exchange heat with the air in the cockpit, so as to generate a heating effect on the cockpit, reasonably utilize energy, and realize the secondary utilization of the hot water in the engine water tank 13. When the combined driving and parking air conditioning system is in the driving refrigeration mode, the parking refrigeration mode, and the parking heating mode, the refrigerant flow direction is changed through the four-way valve 2, so that the combined driving and parking air conditioning system can realize refrigeration and heating at the same time. According to the state of the vehicle, the opening or closing of the compressor 1 is controlled, and the vehicle's own energy is reasonably utilized to meet the needs of users when the vehicle is driving or parked.

[0047] In a specific embodiment, when including an on-vehicle generator 11, a power storage unit 10, and an external generator 12,

[0048] When the combined driving and parking air conditioning system is in the driving refrigeration mode, controlling to turn on the on-vehicle generator 11 and turn off the external generator 12; when the combined driving and parking air conditioning system is in the driving heating mode, controlling to turn off the on-vehicle generator 11 and the external generator 12; when the combined driving and parking air conditioning system is in the parking refrigeration mode and the parking heating mode, controlling to turn on or off the external generator 12 according to the real-time voltage of the power storage unit 10.

[0049] In this technical solution, according to the state of the vehicle, the on-vehicle generator 11 or the external generator 12 is controlled to ensure the power storage capacity of the power storage unit 10, so that the integrated driving and parking air conditioning system can work normally and continuously during driving and parking to meet the temperature requirements.

[0050] In a specific embodiment, controlling the external generator 12 to turn on or off according to the real-time voltage of the power storage unit 10 is specifically implemented as follows:

[0051] Detection step: Detect the real-time voltage U of the power storage unit 10;

[0052] Judgment step: Judge the relationship between the real-time voltage U of the power storage unit 10 and the preset voltage U1;

[0053] Control step: When U ≤ U1, control the external generator 12 to turn on so that the external generator 12 charges the power storage unit 10; when U > U1, control the external generator 12 to turn off.

[0054] In this technical solution, when parking, the voltage of the power storage unit 10 is monitored in real time. When it is detected that the power storage unit 10 is less than the preset voltage, it proves that the power of the power storage unit 10 is insufficient, and then the external generator 12 needs to be turned on to supplement the power of the power storage unit 10 in time, so as to avoid the reduction of the service life caused by the deep discharge of the power storage unit 10.

[0055] In a specific embodiment, the value range of the preset voltage U1 is 21.5V - 23.5V. In this technical solution, 21.5V - 23.5V is the optimal protection voltage range of the power storage unit 10. When the voltage of the power storage unit 10 is less than the optimal protection voltage range, it is urgent to charge the power storage unit 10 to protect the service life of the power storage unit 10.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and variations can be made, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A row-and-resident integrated air conditioning system, characterized in that: Including: A compressor (1), a four-way valve (2), an external heat exchanger (3) for the vehicle, an internal heat exchanger (5) for the vehicle, and a throttle valve (4). The compressor (1), the four-way valve (2), the external heat exchanger (3) for the vehicle, the internal heat exchanger (5) for the vehicle, and the throttle valve (4) are connected to form an air-conditioning cycle circuit. One end of the compressor (1) communicates with the E port of the four-way valve (2), and the other end communicates with the C port of the four-way valve (2). The external heat exchanger (3) for the vehicle communicates with the S port of the four-way valve (2), and the internal heat exchanger (5) for the vehicle communicates with the D port of the four-way valve (2); During refrigeration while driving, the D port and the C port of the four-way valve (2) are conducted, and the E port and the S port are conducted; during heating while parking, the D port and the E port of the four-way valve (2) are conducted, and the S port and the C port are conducted; It further includes a water heating heat exchanger (6) and a water tank (13). The water tank (13) can exchange heat with the vehicle engine. The water heating heat exchanger (6) and the water tank (13) are connected to form a heating circuit; When driving, refrigeration uses the air-conditioning cycle circuit, and heating uses the heating circuit. When parking, both refrigeration and heating use the air-conditioning cycle circuit; A water pump (14) is arranged between the water heating heat exchanger (6) and the water tank (13). The water pump (14) can provide power for the water in the heating circuit to enable the water circulation between the water tank (13) and the water heating heat exchanger (6); It further includes a circulation air duct. One end of the circulation air duct communicates with the outside of the vehicle, and the other end communicates with the inside of the vehicle. The water heating heat exchanger (6) and the internal heat exchanger (5) for the vehicle are located in the circulation air duct and exchange heat with the air in the circulation air duct. A centrifugal fan (7) is arranged in the circulation air duct. The centrifugal fan (7) can transport the outside air into the vehicle through the circulation air duct; The internal heat exchanger (5) for the vehicle is located at one end of the circulation air duct close to the circulation air duct, the centrifugal fan (7) is located at the other end of the circulation air duct, and the water heating heat exchanger (6) is located between the internal heat exchanger (5) for the vehicle and the centrifugal fan (7); The air-conditioning cycle circuit is driven to operate by a power supply assembly. The power supply assembly includes a power storage unit (10). The power storage unit (10) is connected to an in-vehicle generator (11) and an external generator (12). The in-vehicle generator (11) and the external generator (12) can charge the power storage unit (10). The power storage unit (10) is connected to the compressor (1), and the power storage unit (10) can drive the compressor (1) to operate; A drive box (9) is provided between the electricity storage unit (10) and the compressor (1). The drive box (9) can detect the real-time voltage of the electricity storage unit (10) and control the turning off or on of the external generator (12) according to the real-time voltage of the electricity storage unit (10). When refrigerating during driving, the on-vehicle generator (11) charges the electricity storage unit (10), the electricity storage unit (10) drives the compressor (1) to operate, and the external generator (12) is turned off. When heating during parking and when refrigerating during parking, the on-vehicle generator (11) is turned off, and the external generator (12) can charge the electricity storage unit (10).

2. The in-line and resident air conditioning system according to claim 1, wherein: When refrigerating during parking, port D and port C of the four-way valve (2) are conducted, and port E and port S are conducted. The refrigerant sequentially passes through the compressor (1), the four-way valve (2), the external heat exchanger (3), the throttle valve (4), and the internal heat exchanger (5) to form a refrigeration cycle loop.

3. The control method of the integrated driving and parking air conditioning system according to any one of claims 1-2, characterized in that: The integrated driving and parking air conditioning system includes a driving refrigeration mode, a driving heating mode, a parking refrigeration mode, and a parking heating mode; A judgment step of judging the current mode of the integrated driving and parking air conditioning system; A control step. When the integrated driving and parking air conditioning system is in the driving refrigeration mode and the parking refrigeration mode, control to turn on the compressor (1) and the throttle valve (4), and make port D and port C of the four-way valve (2) conducted, and port E and port S conducted. When the integrated driving and parking air conditioning system is in the parking heating mode, control to turn on the compressor (1) and the throttle valve (4), and make port D and port E of the four-way valve (2) conducted, and port S and port C conducted.

4. The control method of the integrated in-line air conditioner system according to claim 3, characterized in that: When the integrated driving and parking air conditioning system is in the driving heating mode, control to turn off the compressor (1), control to turn on the water pump (14), and make the heating circuit operate. When the integrated driving and parking air conditioning system is in the parking heating mode, control to turn off the water pump (14).

5. The control method of the integrated driving and parking air conditioning system according to claim 3, characterized in that: When the integrated driving and parking air conditioning system is in the driving refrigeration mode, control to turn on the on-vehicle generator (11) and turn off the external generator (12). When the integrated driving and parking air conditioning system is in the driving heating mode, control to turn off the on-vehicle generator (11) and the external generator (12). When the integrated driving and parking air conditioning system is in the parking refrigeration mode and the parking heating mode, control to turn on or off the external generator (12) according to the real-time voltage of the electricity storage unit (10).

6. The control method of the integrated in-line air conditioner system according to claim 5, characterized in that: Controlling the turning on or off of the external generator (12) according to the real-time voltage of the electricity storage unit (10) is specifically implemented as follows: A detection step: detecting the real-time voltage U of the electricity storage unit (10); A judgment step of judging the relationship between the real-time voltage U of the electricity storage unit (10) and the preset voltage U1; Control step: when U ≤ U1, control the external generator (12) to turn on so that the external generator (12) charges the electricity storage unit (10); when U > U1, control the external generator (12) to turn off.

7. The control method of the integrated in-line air conditioner system according to claim 6, characterized in that: The value range of the preset voltage U1 is 21.5V - 23.5V.

Citation Information

Patent Citations

  • Integral multifunctional electric air conditioning system for crawler crane

    CN112223982A