SU659850A1 - Method of operation of hermetic cooling unit - Google Patents

Description

I

The invention relates to the field of refrigeration technology, namely to the method of operation of a hermetic refrigeration unit. Methods are known for operating a hermetic refrigeration unit containing a casing with a motor-compressor inside by compressing the vapor of a mixture of high- and low-boiling refrigerants, liquefying them, throttling the resulting liquid, boiling the latter at low pressure to produce a refrigeration effect and sucking the resulting vapor 1.

A disadvantage of the known methods is their low cost-effectiveness due to insufficient cooling of the motor-compressor.

The aim of the invention is to increase the econdmicity of the proposed method by effectively cooling the motor-compressor.

This goal is achieved in that the high boiling refrigerant is boiled inside the jacket.

The described method is carried out as follows. The mixture of high and low boiling refrigerants, for example, refrigerant 11 and 13B1 refrigerant (28.3 / 71.7 wt.%) Is compressed by a motor-compressor to a condensation pressure and liquefied

running water or ambient air. The resulting liquid is throttled to a low pressure at which the 13B1 refrigerant boils, the cooling effect is produced, and the refrigerant D1 remains in the liquid state, so K.ajt of the 5th boiling point is higher at a given pressure. Next, the vapor-liquid mixture enters the motor-compressor housing. Since the temperature of the lotor compressor exceeds the boiling point of refrigerant 11, the latter evaporates, removing heat from the windings of the electric motor and the compressor elements, thereby cooling them.

The economic efficiency of the proposal is expressed in reducing the consumption of electricity for the production of cold.

Claims (1)

Invention Formula The method of operation of a hermetic refrigeration unit containing a casing with a motor-compressor inside, by compressing the vapors of a mixture of high- and low-boiling refrigerants, liquefying them; throttling the resulting liquid, boiling the latter at low 3 659850 4 pressure to obtain a cold liquid refrigerant with the effect and suction of the resultant are formed inside the casing, vapor, different sources of information taken during By the fact that, with the purpose of increasing the economy attention during the examination micronity by effective cooling-1. USSR author's certificate Deni motor-compressor, boiling you-№ 517765, cl. F 25 D 11/00, 1975.