What's the matter with the water in the car when the air conditioner is turned on? how?

In summer, when we drive, we basically choose to turn on the air conditioner. Do you encounter this situation? There will be water in the cab when the air conditioner is turned on. I have encountered several 4S store maintenance personnel calling our air-conditioning manufacturer to say that the air-conditioning is leaking, and I have also encountered the vehicle road test personnel giving us feedback on adjusting the water leakage when the air-conditioning is turned on. This paper focuses on why there is water when the air conditioner is cooling, and the possible reasons for water leakage in the cab of the automobile air conditioner.

First, explain why water is generated during the refrigeration of automobile air conditioner. The refrigeration principle of automobile air conditioner is that high-temperature and high humidity air passes through the evaporator and exchanges heat with the refrigerant flowing into the evaporator on the evaporator surface. The air from the evaporator surface becomes low-temperature air. Because the air saturation points at different temperatures are different, When high-temperature gas turns into low-temperature gas, some water will condense, so air conditioning refrigeration has two effects: one is to reduce the temperature of the cab, and the other is to reduce the humidity of the cab. The principle of automobile air conditioning refrigeration and demisting is the same. The reason for demisting is that there is a temperature difference and high humidity. Air conditioning refrigeration can meet these two conditions at the same time. Therefore, the speed of using refrigeration and demisting in summer is very fast.

So when the car air conditioner is cooled, it will produce condensed water. How is this water discharged out of the car? Generally, the drainage is carried out through the drainage pipe of automobile air conditioner. If there is ponding in the front cab, there are two possible reasons: one is that water enters from the outside, and the other is that the condensate drainage is not smooth during refrigeration, and the excess water leaks from the joint of the air conditioning housing, resulting in ponding in the cab.

What are the reasons for the poor drainage of air conditioning condensate?

1. The air conditioning drain pipe is not installed in place, resulting in the condenser flowing into the cab from the air conditioning drain. At this time, it is necessary to reinstall the drain pipe.

2. The automobile air conditioning shell is damaged, and the condensate flows out from the damaged place, resulting in ponding in the cab. Replace the air conditioning shell with a new one.

3. The drain of the air-conditioning shell is blocked, and the condensed water cannot be discharged from the drain, resulting in ponding in the cab. I have encountered this situation. When the mold manufacturer produced the air-conditioning shell, the process parameters were not well controlled, resulting in blocking of the drain, resulting in ponding in a batch of vehicles.

4. The outlet of the drain pipe is blocked. Disassemble the drain pipe for troubleshooting and clean the blockage.

If you have any questions about car air conditioning, you are welcome to pay attention to me and leave comments. I will give professional replies and answers. Thank you very much!