CN-121973599-A - Automobile air conditioning system and starting control method thereof

Abstract

The invention discloses an automobile air conditioning system and a starting control method thereof, and belongs to the technical field of automobile air conditioners. The automobile air conditioning system comprises a liquid storage device, an expansion valve, an evaporator, a compressor, a condenser, an outdoor fan, an indoor fan and a return air device, wherein the condenser comprises an outdoor core body, the outdoor core body is correspondingly provided with the outdoor fan, a fresh air device is further arranged on the automobile and comprises a fresh air port and a fresh air door, and the fresh air port is provided with a first temperature sensor. The starting control method of the automobile air conditioning system comprises the steps of opening a fresh air door, closing a return air door, starting an indoor fan to ventilate the automobile, starting an outdoor fan to reduce the temperature of an outdoor core body, and when the temperature in the automobile is detected to be equal to the fresh air inlet temperature, closing the fresh air door, opening the return air door and enabling a compressor to work. The invention reduces the starting load of the compressor, reduces the possibility of overload and overcurrent alarming of the compressor, improves the reliability of the air conditioner and the service life of the compressor, and reduces the energy consumption.

Inventors

• CAI YONGGANG
• OUYANG WEI
• CHEN DALONG
• CHEN BANGCHAO
• LIN YANHAO
• CHEN HAIRUN

Assignees

• 厦门金龙汽车空调有限公司

Dates

Publication Date

20260505

Application Date

20260130

Claims (8)

1. 1. The automobile air conditioning system comprises a liquid storage device, an expansion valve, an evaporator, a compressor, a condenser, an outdoor fan, an indoor fan and a return air device, wherein the liquid storage device, the expansion valve, the evaporator, the compressor and the condenser are connected through pipelines to form a loop, and the condenser comprises an outdoor core.
2. 2. An automotive air conditioning system as set forth in claim 1 wherein said return air unit includes a return air inlet and a return air door, said return air inlet having a second temperature sensor.
3. 3. An automotive air conditioning system as set forth in claim 1 wherein said evaporator includes two sets of parallel-connected indoor cores, each set of indoor cores being provided with one of said indoor fans, respectively, on either side of said return air unit.
4. 4. An automotive air conditioning system according to claim 1 in which the cabin is further provided with a ventilation fan.
5. 5. A start-up control method of an automotive air conditioning system according to claim 1, comprising the steps of: S1, powering on an air conditioning system, and judging whether the temperature in the vehicle is greater than a set threshold T 1 or not; S2, if the temperature in the vehicle is greater than a set threshold value T 1 , opening a fresh air door, closing a return air door, starting an indoor fan to ventilate the vehicle, and simultaneously starting an outdoor fan to reduce the temperature of an outdoor core; and S3, when the temperature in the vehicle is detected to be equal to the fresh air inlet temperature, closing the fresh air door, opening the return air door, and starting the compressor to perform refrigeration.
6. 6. A start control method of an air conditioning system for a vehicle according to claim 5, wherein the threshold T 1 is 35 ℃.
7. 7. The method of claim 5, wherein the step S2 is performed by starting the indoor fan to ventilate the interior of the vehicle, and particularly the indoor fan is continuously supplying air into the interior of the vehicle, the air pressure in the interior of the vehicle is greater than the air pressure outside the vehicle, hot air in the vehicle is discharged from the window or the door, and if the window or the door is not opened at this time, the on-vehicle ventilation fan is started.
8. 8. The method of claim 5, wherein the temperature in the vehicle in step S3 is equal to the fresh air intake temperature, and specifically the temperature in the vehicle is less than or equal to +2℃.

Description

Automobile air conditioning system and starting control method thereof Technical Field The invention relates to the technical field of automobile air conditioners, in particular to an automobile air conditioning system and a starting control method thereof. Background In summer, after the vehicle is exposed to the sun, the vehicle door and window are closed, and the temperature outside the vehicle is more than 35 ℃ and the temperature inside the vehicle can reach 50 ℃ or even higher. In this state, if the air conditioner is directly started to cool and ventilate the interior of the vehicle, the compressor load of the air conditioning system is very high, and particularly, when the electric compressor is used for the air conditioner, the compressor is frequently subjected to over-current, overload and other alarms, so that the air conditioner cannot work and customer complains are caused. Severe conditions can also damage the compressor, causing greater losses. The Chinese patent application with publication number CN119953138A discloses a vehicle cabin air fresh air exchange system which is not arranged on a vehicle and comprises an air conditioner air inlet module arranged at the front part of the cabin and comprising an air inlet fan, an air inlet door and a filter, an air exhaust module arranged at the tail part of the trunk side and comprising an air exhaust fan and an air exhaust door, a detection module for detecting at least one of environment parameters inside the vehicle, environment parameters outside the vehicle, whether personnel exist inside the vehicle and the air exchange quantity inside and outside the vehicle in real time, and a control module for controlling the opening and closing of the air inlet door and the air exhaust door and the running states of the air inlet fan and the air exhaust fan according to the detection result of the detection module. Through setting up the module of airing exhaust, cooperation air conditioner air inlet module can be with outside air by the leading-in vehicle front portion, inside air then by the leading-out in vehicle rear portion, reaches to reduce inside temperature. The patent can discharge hot air in the cabin of the vehicle to achieve the aim of cooling, but still can not solve the problem of overlarge load of an air conditioner compressor. Disclosure of Invention The invention provides an automobile air conditioning system and a starting control method thereof, and aims to solve the problems that an existing automobile is exposed to the sun at a high temperature, an air conditioning compressor is directly started, and an alarm such as overcurrent and overload is easily generated due to overlarge load, so that an air conditioner cannot work and the like. The invention adopts the following technical scheme: The utility model provides an automobile air conditioning system, includes cistern, expansion valve, evaporimeter, compressor, condenser, outdoor fan, indoor fan and return air device, the cistern expansion valve the evaporimeter the compressor with form the return circuit through the pipe connection between the condenser, the condenser includes outdoor core, outdoor core corresponds to be equipped with outdoor fan, still be equipped with on the vehicle in the intercommunication car with the external fresh air device of car, fresh air device includes fresh air inlet and fresh air door, the fresh air inlet is equipped with temperature sensor one. In a preferred embodiment, the air return device comprises an air return opening and an air return door, and the air return opening is provided with a second temperature sensor. In a preferred embodiment, the evaporator comprises two groups of parallel indoor core bodies, the two groups of indoor core bodies are respectively arranged at two sides of the air return device, and each group of indoor core bodies is correspondingly provided with one indoor fan. In a preferred embodiment, the cabin is further provided with a ventilation fan. The invention also provides a starting control method of the automobile air conditioning system, which comprises the following steps: S1, powering on an air conditioning system, and judging whether the temperature in the vehicle is greater than a set threshold T 1 or not; S2, if the temperature in the vehicle is greater than a set threshold value T 1, opening a fresh air door, closing a return air door, starting an indoor fan to ventilate the vehicle, and simultaneously starting an outdoor fan to reduce the temperature of an outdoor core; and S3, when the temperature in the vehicle is detected to be equal to the fresh air inlet temperature, closing the fresh air door, opening the return air door, and starting the compressor to perform refrigeration. Preferably, the threshold T 1 is 35 ℃. Further, in the step S2, the indoor fan is started to ventilate the interior of the vehicle, specifically, when the indoor fan continuously supplies air into the interior of the vehicle, the