SU807008A1 - Double-chamber refrigerator - Google Patents

Description

(54) TWO-CHAMBER REFRIGERATOR

The invention relates to refrigeration equipment, namely, to two-chamber refrigerators with an upper location of the freezing compartment. Two-chamber refrigerators are known, the structures of which prevent moisture condensation on the surface of the cabinet edges and seal the freezer door by heating this surface above the dew point by the built-in electric heaters or piping systems of the refrigeration unit with hot refrigerant 1 and 2 circulating through them. The disadvantages of these refrigerators include low operational reliability, increased power consumption, the need to take special technical measures in case of heating the cabinet edge surfaces with electric heaters, a decrease in the cooling capacity of the unit due to an increase in the resistance of the heating pipe and a decrease in heat students The closest to the proposed technical essence and the achieved result is a two-chamber refrigerator containing a heat-insulated body divided by a heat-insulating partition into a refrigerator; Noah I and the freezer located above it, and doors fitted with a seal around the perimeter of the doorways. During the operation of the refrigerator, warm air from the engine compartment is supplied by a fan to the vertical channels made in the heat insulation of the case and is ejected through the holes in the ends of the channels, blowing and heating the edge of the freezer door and. thus preventing the formation of condensation 3. However, heating the edges of the door of the freezing chamber with air at a temperature 40-60 ° C higher than the ambient temperature creates additional heat influx into the refrigerating chamber, and therefore it is necessary to increase the thickness of the insulation by reducing the effective volume of this chamber or increasing the flow rate electricity by increasing

coefficient of working time of the refrigeration unit.

The purpose of the invention is to save electricity and increase the operational reliability of the refrigerator.

The goal is achieved by the fact that the freezer door is equipped with an additional seal attached to its inner surface with the formation of a closed channel with the main seal when the door is closed, and the heat insulating partition has openings connecting the closed channel with the cooling chamber.

FIG. 1 schematically depicts the proposed two-chamber refrigerator, general view, axonometric; in fig. 2 is the same section f in FIG. 3 node 1 in figure 2; in fig. 4 shows section A-A in FIG. 2

The two-compartment refrigerator contains a thermally insulated casing 1, in which the refrigerating chamber 2 is located and the freezer 3 is located above it, separated by a thermal insulating partition 4. The door 5 of the refrigerating chamber 2 is equipped with a special PVC seal 6 with a magnetic insert 7 inside. The door 8 of the freezing chamber 3, in addition to the main outer seal 9 with the magnetic insert 10, has an additional hollow seal 11 fixed on its inner panel. The sealing zone of the door opening of the freezing chamber 3 is arranged in the form of a channel 12, which is closed along the perimeter, formed by a front frame 13 framed by a hinge, the inner surface of the door 8, a heat insulating partition 4, outer and inner seals 9 and 11, and communicated with the cooling chamber 2 through openings 14 made in the insulating partition 4.

During the operation of the refrigerator, the temperature field is uneven in height over the height of the refrigerator. The highest temperature, approximately 5-10 seconds, is in the upper part of the refrigerating chamber 2. Due to the difference in density between the warm and cold air, the flow of relatively warm air 15 rises through the holes 14 to the channel 12 around the perimeter, washing and heating its walls. As a result, the temperature of the surface 16 of the housing 1 and the adjacent sealant 9 is maintained above the dew point, thus eliminating the possibility of condensation of moisture on them from the environment.

The air flow cooled in the process of heat exchange with the channel walls; 12, is lowered through the openings 14 along the door 5 of the refrigerating chamber 2. Thus, a directed circulating flow 17 occurs around the inner perimeter of the main compactor 9 of the freezing compartment 3.

The proposed design of a two-chamber refrigerator, in which, to prevent moisture condensation around the perimeter of the freezing door 8 1 (amers

3, the air of the refrigerating chamber 2 is used with a relatively low temperature potential, which makes it possible to reduce the heat influx into the internal volume of the refrigerator by 10–15% compared with the known designs,

reduce energy consumption by an average of 15-20% and improve the operational reliability of the device, due to the lack of additional

elements (electric heaters, pipelines, fan, etc.) used in known refrigerators.

Claims (3)

Invention Formula A two-chamber refrigerator containing a heat-insulated casing divided by a heat-insulating partition into a refrigerating chamber and a freezer located above it, and doors equipped with a sealant around the perimeter of the doorways, characterized in that, in order to save electricity and increase operational 0 reliability door of the freezing chamber is provided with an additional seal fixed on its inner surface with the formation of a closed channel with the main seal when the door is closed, and the heat insulating partition has openings connecting it. closed channel with a refrigerator. Sources of information taken into account in the examination P 1. Weinberg B.S., et al. Household compression refrigerators. M., Food Industry, 1974, p. 55. 2. The patent of France No. 2260764, cl. F 25 O 31/08, published 1973. 3. US patent number 4009586, kl.62-80, publ. 1977 (prototype).