Types of refrigerators 

Refrigerators for coffee machines for cooling milk.
Types of Kitchenmaster refrigerators depending on how they work:
1. thermoelectric refrigerators: model ETC 4, ETC 6, LWCR-8L-B and model JC-16
2. compressor refrigerators: BR 9 model.
Principle of operation, advantages and disadvantages of thermoelectric and compressor refrigerators
Thermoelectric refrigerators:
- the principle on which the operation of thermoelectric refrigerators is based was discovered in 1834 by the French physicist, J. C. A. Peltier. Hence, the temperature-generating elements of thermoelectric systems are called Peltier modules. The principle of their operation is that as a result of the flow of direct current through the junction of different metals, heat or cold is generated, depending on the direction of its flow. This effect was enhanced by the use of heat exchangers and fans. The main advantages of thermoelectric refrigerators are their low weight, and therefore ease of transport, quiet operation, and durability of the structure.
Compressor refrigerators:
compressor devices use refrigerant. The compressor pumps the coolant into the so-called a capillary tube with a very small cross-section, thereby compressing it. The cooling factor then goes from the capillary tube to the evaporator inside the refrigerator, where it expands and this phenomenon is accompanied by a low temperature. In the evaporator, this factor changes from liquid to gas, cooling the interior of the refrigerator. The compressor sucks in the gaseous refrigerant, compresses it and sends it further to the condenser. There, the refrigerant releases the heat absorbed in the evaporator, returns to a liquid state and flows to the evaporator, where the entire process starts again. The main advantage of compressor refrigerators is their high cooling efficiency.