SU1606826A1 - Double-chamber refrigerator - Google Patents

Abstract

The invention relates to refrigeration and can be used in household refrigerators. The purpose of the invention is to reduce energy consumption and reduce the temperature level in the freezer. The compressor of the refrigerator has low and high stages 3 and 4 respectively placed in the hermetic casing 6, while the cavity of the casing 6 communicates with the discharge pipe 15 of the low stage 3 and with the suction pipe 16 of the high stage 4. When operating the liquid refrigerant from the condenser 7, throttle in the capillary tube 8 of a high stage 4 to an intermediate pressure enters the tube 11, located above the assumed level of the liquid refrigerant, together with the liquid refrigerant from the evaporator 9 of the refrigerating chamber 1. One part of the liquid refrigerant This is supplied by the pressure of the liquid column through the tube 10 to the evaporator 9 of the refrigerating chamber. Another part of the liquid refrigerant through the tube 12 enters the evaporator 13 of the freezing chamber 2. The refrigerant vapor through the tube 14 is sucked in by a low stage 3 of the compressor, compressed to an intermediate pressure and fed into the cavity of the hermetic casing 6. The device reduces irreversible energy losses during throttling and compression the compressor, as well as providing low temperatures in the freezer compartment by increasing the degree of compression. 1 hp ff, 3 ill.

Description

 The invention relates to a refrigeration equipment and can be used in household refrigerators.

The purpose of the invention is to reduce energy consumption and reduce the temperature level in the freezing chamber.

FIG. 1 shows a diagram of a two-chamber refrigerator; in fig. 2 is a node in FIG. one; in fig. 3 is a view along arrow A in FIG. one.

The two-chamber refrigerator contains refrigerating and freezing chambers 1 and 2 and a refrigerating system, a compressor with a low stage 3 and a high stage 4, a discharge pipe 5 made in the form of a serpentine heat exchanger located in the lower part of the cavity of the hermetic casing 6, a condenser 7 which A high stage choke, made in the form of a capillary tube 8, is connected to the cavity of the casing 6.

The refrigerator also contains an evaporator 9 of the refrigerating compartment 1. The tubes 10 and 11 for supplying and discharging the refrigerant are connected to the casing 6, respectively, in its lower part and above the assumed level of the liquid refrigerant therein. The capillary tube 8 can be connected either to the tube 11 or to the lower part of the hermetic casing 6. The low-stage choke 3 is inserted into the tube 10 in the form of a capillary tube 12 connected to the evaporator 13 of the freezing chamber 2. Tube 14 for the refrigerant outlet connects the evaporator 13 of the freezer compartment 2 to the suction side of the low stage 3 of the compressor.

The cavity of the sealed enclosure 6 is in communication with the low-stage discharge pipe 15 and the high-stage suction pipe 16, with the casing 6 installed above the evaporator 9 of the cooling chamber. The casing 6 may be located in a refrigerated compartment 1.

The refrigerator works as follows

at once.

Liquid refrigerant from condenser 7, throttled in capillary tube B of stage 4 to intermediate pressure, enters pipe 11, located above the assumed level of liquid refrigerant 3, casing 6, from which liquid refrigerant is drained into the cavity of hermetic casing 6, and formed during throttling of a pair sucked up by a high compressor stage. One part of the liquid refrigerant from the lower cavity of the hermetic casing 6 through the supply tube 10 under the action of the pressure of the liquid column enters the evaporator 9 of the refrigerating chamber 1, boiling at intermediate pressure, extracting heat from the refrigerating chamber 1. The vapor of the refrigerant through the tube 11 is sucked in high step 4. Another part of the liquid refrigerant is throttled in the capillary tube 12 to boiling pressure and enters the evaporator 13 of the freezing chamber 2, where it boils, extracts heat from the freezing chamber 2, and the refrigerant vapor is drawn through the tube 14 from stage 3, they are compressed to intermediate pressure and fed into the cavity of the hermetic casing 6 of the compressor. Next, the chla-, dagent vapors are sucked in by a high stage 4 of the compressor and compressed to a condensation pressure. The compressed refrigerant vapor in the discharge pipe 5, made in the form of a heat exchanger (Fig. 3), is cooled by heat exchange with the liquid refrigerant in the lower cavity of the compressor 6 hermetic casing 6 and is fed to the condenser. 7 where liquefied; the cycle repeats.

The performance of a two-chamber refrigerator reduces energy consumption due to a corner / less loss during adiabatic compression, and also ensures lower temperatures in the freezer compartment.

Formula and b about sh shadow

Claims (2)

1. Two-compartment refrigerator containing refrigerating and freezing chambers, high and low compressor steps enclosed in a sealed enclosure, condenser, chokes, evaporators of the refrigerating and freezing chambers, characterized in that, in order to reduce energy costs and reduce the temperature level in the freezing chamber, the housing cavity communicates with a low-pressure discharge pipe and a high-level suction pipe, pipes for supplying and discharging refrigerant to the evaporator of the refrigerating chamber are connected to the casing, respectively, in its lower part and above the expected level of liquid refrigerant in it, the tube for supplying the refrigerant to 0 the freezer evaporator has a throttle and is connected to the lower part of the compressor casing, and a tube for draining refrigerant from the freezer evaporator is connected to the low-level compressor suction nozzle, the casing is installed above the level of the refrigerating chamber evaporator, and the condenser is connected to the casing cavity through a high throttle throttle . 2. Refrigerator according to claim 1, characterized in that the hermetic casing is located in the refrigerating chamber. eight