RU1806315C - Compression refrigerator - Google Patents

Abstract

Usage: in refrigeration, mainly in compression refrigeration units of domestic refrigerators. SUMMARY OF THE INVENTION: In a refrigeration unit, a coil-tube evaporator is plugged at one end and connected to the suction pipe at the other end, while the capillary tube runs inside the evaporator along its entire length, which intensifies heat transfer between the forward and return flows, while the manufacturing time is reduced . 3 ill.

Description

The invention relates to refrigeration equipment, in particular to compression refrigeration units of predominantly domestic refrigerators and freezers.

. The aim of the invention is to reduce the complexity of manufacturing the unit and increase its reliability by reducing the number of pipe connections.

In FIG. 1 schematically shows an embodiment of the use of the unit in a freezer; in FIG. 2 - the same in a two-chamber refrigerator; in FIG. 3 - node I in FIG. 1.

The freezer contains a chamber 1 with an evaporator 2 located therein. Compressors 3, a condenser 4 and a capillary tube 5 are connected in series. The evaporator 2 is made in the form of a coil with a capillary tube 5 inside.

The two-chamber refrigerator contains, in addition to the freezer 1, a refrigerator 6 equipped with a part of the evaporator 2.

The refrigeration unit of the freezer operates as follows.

The refrigerant vapor is compressed in the compressor 3, cooled and condensed in the condenser 4. Next, the liquid refrigerant enters the capillary tube 5, through which it flows to the upper muffled end of the evaporator 2. There, the refrigerant begins to boil intensively, taking the heat of the ambient air of the freezer, while moving down the evaporator coil and cooling the capillary tube 5. The refrigerant vapor is sucked off by compressor 3, i.e. cooling of the capillary tube occurs along the entire length of the evaporator, i.e. a greater degree of supercooling of the direct flow of refrigerant is achieved by heat exchange of the latter with the return flow. As a result, the liquid content in the upper part of the evaporator is relatively increased, and in the lower part it is reduced. This leads to the fact that in

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the upper part of the freezer is more intense heat extraction .:

Under conditions of natural convection, this helps to obtain a uniform floor, temperatures in the freezer volume, which reduces energy costs.

In a two-chamber refrigerator embodiment, a direct refrigerant stream is led to the blanked end of the evaporator 2 located in the upper part of the freezer 1. Here, the refrigerant begins to evaporate vigorously, taking tagGlo from the air of the freezer. Next, the refrigerant is transferred to the lower part of the evaporator of the freezer, and then to that part of the evaporator, which is located in the refrigeration chamber b, simultaneously cooling the capillary tube 5. After that, the refrigerant vapor is sucked off by compressor 3. Decrease

energy costs are achieved through more intensive heat removal in the upper part of the freezer.

The use of the proposed refrigeration unit will reduce the complexity of its manufacture, and will also save energy.

Claims (1)

SUMMARY OF THE INVENTION A compression refrigeration unit comprising a compressor, a condenser, a capillary tube and a coil-tube evaporator connected at one end to a suction pipe is also characterized in that the other end of the evaporator is plugged to reduce manufacturing time and increase reliability. and a capillary tube is installed inside the evaporator along its entire length Editor FIG. 3 Compiled by I, “racist Tehred M. Morgenthal Corrector M. Keretsman