Refrigeration and heating integrated machine compressor knowledge introduction

Refrigeration and heating integrated machine is one of the equipments commonly used in pharmaceutical and chemical laboratories to control the temperature of refrigeration and heating with matching reactors and reactors.
The temperature requirements are met through the circulation of refrigerant or refrigerant in the equipment.
Among them, the compressor is the main accessory.
One, it plays a certain role in the equipment, so how to classify the compressor of the refrigeration and heating integrated machine? What protection function does it have? 1.
Classification of refrigeration and heating integrated compressors: There are many types of refrigeration and heating integrated compressors, among which piston, scroll and screw compressors are widely used, all of which are brand compressors.
Stable operation and other aspects can meet the requirements of users
.

Piston compressors: Older compressors have older qualifications, so they are widely used in cold storage, refrigeration equipment and cryogenic equipment freezers
.

Rotary compressors: mainly used in refrigeration equipment, scroll compressors are mainly used in cryogenic equipment refrigerators, screw compressors are mainly used in refrigeration equipment, screw compressors are mainly used in cold storage and refrigeration and heating integrated machines; Centrifugal compressors: refrigeration Large quantity, generally used for all-in-one machine
.

2.
Protection functions of the compressor of the integrated refrigeration and heating machine: 1.
Pressure protection: The pressure control of the integrated refrigeration and heating machine is generally composed of a high-pressure control part and a low-pressure control part
.

When the exhaust pressure exceeds a certain value, the high pressure control of the compressor will cut off the power supply of the compressor, and when the pressure value is lower than a certain value, the low pressure control will also cut off the power supply of the compressor and issue an alarm signal
.

　　2.
Motor protection: In order to prevent the compressor from malfunctioning during high-load operation, the installation of an overheating relay can effectively ensure the overload of the compressor
.

The lack of phase of a conventional three-phase motor will cause the motor to fail to start or be overloaded.
An overload relay can be used to avoid damage to the motor due to lack of phase
.

　　3.
Temperature protection: The cooling and heating integrated machine is equipped with a temperature control system at the exhaust port
.

When the exhaust temperature is too high, the temperature control system will automatically cut off the circuit
.

If the temperature of the cooling and heating integrated machine is too high, the compressor will also be affected
.

The main reason is that due to the insufficient heat exchange power of the condenser, it is necessary to check its status to see if its air volume, water volume, and water temperature are normal, and check whether there is air entry or other stains in the refrigeration and heating integrated machine
.