Use of compressor protection of refrigerator

First of all, assuming there is no protection device, such as the most basic “suction and discharge pressure protection”, what will happen to the compressor?

When the compressor has problems of excessive exhaust pressure and low suction pressure, there is no effective compressor protection device protection, and the protection of the pressure controller is lost, which will cause the compressor discharge pressure to be high, and the suction pressure If it is low, it will eventually lead to the inability to do work normally. This is not the most important thing. The most important thing is that it will also cause damage to the refrigerator compressor. If the compressor protection device is installed, it will be a different picture. Once the compressor of the refrigerator has a problem, it will shut down.

Secondly, in terms of discharge temperature protection, if the compressor is not equipped with discharge temperature protection, when the compressor discharge temperature is too high, the compressor will continue to operate, which will cause damage to the compressor and the condenser. It cannot be condensed normally. Once the compressor fails, the compressor’s discharge temperature protection device is not installed, which will cause the compressor to be damaged.

Taking the oil pressure difference protection and oil temperature protection device as an example, when the compressor has a problem of poor oil supply, if you install the relevant protection device, it will naturally be able to stop automatically to avoid damage to the compressor.

If the relevant device is not installed, the compressor will continue to run in a state of oil shortage or abnormal oil level, which will eventually cause the compressor to burst and be damaged!

The main purpose of these compressor protection devices is to allow the compressor to have the ability to automatically stop under abnormal conditions, thereby protecting the normal operation and safety of the compressor!