SU1211546A1 - Domestic refrigerator - Google Patents

Description

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This invention relates to refrigeration engineering, in particular, to domestic refrigerators with a compressor refrigeration unit.

The purpose of the invention is to reduce material consumption and increase the reliability of the refrigerator in operation.

FIG. 1 shows a schematic representation of the proposed domestic refrigerator, a general view, in FIG. 2 - diagram of the refrigeration system.

The household refrigerator includes a heat-insulated housing 1 with shelves 2, a compressor 3, into the cavity of which a shell-coking regenerative heat exchanger 4 is built, an evaporator 5 forming the freezer compartment, a condenser 6, a capillary tube 7, a discharge and suction pipelines 8 and 9 of the compressor 3, a filter dryer 10 for dehydrating the refrigerant and cleaning the internal environment of the refrigeration unit. The heat exchanger 4 contains a casing 11 and a coil 12 housed therein, while the casing 1 is installed in the oil bath 13 of the compressor 3, and its cavity is connected to the discharge line of the compressor 3, the coil 12 is connected to the suction line of the compressor 3. Suction line 9 at the site of exit from housing 1, it is built into the thermal insulation of the latter.

Household refrigerator cooler works as follows.

Products to be stored are placed on the shelves 2 in the freezer compartment formed by the evaporator 5. The compressor 3 is turned on in the network, which supplies refrigerant

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into the cavity of the casing 11, from where the refrigerant flows through the discharge pipe 8 to the condenser 6 and, moreover, through the capillary tube 7 to the evaporator 5, where, due to boiling of the refrigerant, heat is removed from the products. Refrigerant vapor from the evaporator 5 through the suction line pipeline 9 enters the serpent –10 evik 12, embedded in the casing It, which is immersed in the oil bath 13. Here due to heat transfer from the vapor refrigerant in the casing 1 to 15 oil in the bath 13, the refrigerant, supplied from the evaporator with a temperature of -20 ° C, is heated at 52 ° C to the required temperature by cooling the oil bath 13 and the casing 11 and, accordingly, the oil and injected steam for 10-15 C to 80 s) J leads to increased reliability of domestic refrigerators reduce its metal consumption, since the oil has lubricated stable binding oui; their properties at temperatures in) 1she 80 C, and reducing the temperature of the vapor refrigerant charge reduces the heat transfer surface of the condenser. From the coil 12, the refrigerant enters the cavity of the compressor 3. The placement of the suction pipe 9 in the exit zone of the housing 1 in the thermal insulation of the latter reduces the heat inflows to the refrigerant medium vapor. The proposed domestic refrigerator differs from the known smaller size and mass of the condenser, as well as increased reliability in the operation of the refrigeration system.

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Claims (3)

1. A DOMESTIC REFRIGERATOR comprising a thermally insulated casing, a compressor, a condenser and an evaporator connected in series to form a circulation circuit, and a regenerative heat exchanger, one cavity of which is included in the compressor suction line, characterized in that, in order to reduce material consumption and increase operational reliability , the heat exchanger is made casing-coil, while the casing is located in the oil bath of the compressor, and the cavity of the casing is included in the discharge line of the compressor. 2. The refrigerator according to claim 1, characterized in that the suction pipe in the exit zone from the housing is located in the insulation of the latter. 3. Refrigerator according to π. 1, characterized in that the casing of the heat exchanger is part of a sphere. SU ... 1211546 I