Domestic low-temperature refrigerator

Abstract

The invention discloses a domestic low-temperature refrigerator, and relates to a domestic refrigerator. The domestic low-temperature refrigerator is provided with a refrigerator body, wherein a freezing chamber and a refrigeration chamber are formed in the refrigerator body, and a low-temperature freezing chamber is formed; a refrigeration system is arranged in the refrigerator body; the refrigeration system comprises a compressor, a condenser, a throttle device, a heat regenerator, a low-temperature freezing chamber evaporator, a freezing chamber evaporator and a refrigeration chamber evaporator; the refrigeration chamber evaporator is the same as the freezing chamber evaporator in structure, and comprises an evaporation pipe, a secondary heat exchange plate and a primary heat exchange plate; a heat-conducting oil cavity is formed in the secondary heat exchange plate; a heat-conducting oil injection port is formed in the heat-conducting oil cavity; the two ends of the evaporation pipe are connected with the heat-conducting oil cavity separately; the rear side surface of the secondary heat exchange plate is connected with the front side of the primary heat exchange plate in a manner of controllable bonding or separation; a refrigerant cavity is formed in the primary heat exchange plate; and a refrigerant inlet and a refrigerant outlet are formed in the refrigerant cavity. Thedomestic low-temperature refrigerator is provided with the low-temperature freezing chamber and achieves a long food expiration date, and has the advantages of being simple in structure, low in cost,simple in pipeline, low in fault rate, high in refrigeration efficiency, energy-saving and the like.

Description

technical field [0001] The invention relates to the field of household refrigerators, and in detail is a household low-temperature refrigerator with a low-temperature freezer, long shelf life for food, simple structure, low cost, simple pipelines, low failure rate, high refrigeration efficiency, and energy saving. Background technique [0002] We know that a refrigerator is a refrigeration device that maintains a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state. Household refrigerators are usually two-door refrigerators or three-door refrigerators, and the interior of the refrigerator is divided into two or three storage rooms with different temperatures. Regardless of two-door refrigerators, three-door refrigerators or even more refrigerators, existing household refrigerators include a A freezer room with a temperature of about minus 15 degrees, and a refrigerator room with a temperature ...

AI Technical Summary

Problems solved by technology

Household refrigerators are usually two-door refrigerators or three-door refrigerators, and the interior of the refrigerator is divided into two or three storage rooms with different temperatures. Regardless of two-door refrigerators, three-door refrigerators or even more refrigerators, existing household refrigerators include a A freezer room with a temperature of about minus 15 degrees, and a refrigerator room with a temperature of about 6 degrees, and other storage rooms are fresh-keeping or fruit and vegetable storage rooms with a temperature between the two; Frozen storage of food or items with low freezing temperature requirements has a short shelf life for ordinary foods, which cannot meet the needs of long-term frozen food storage

The refrigerating system of the existing household refrigerator includes a compressor, a condenser, a throttling device and an evaporator. The refrigerant outlet of the compressor is connected with the refrigerant inlet of the condenser, and the refrigerant outlet of the condenser is connected with the inlet of the throttling device. The outlet of the device is connected to the refrigerant inlet of the evaporator, and the refrigerant outlet of the evaporator is connected to the refrigerant inlet of the compressor to form a refrigeration cycle; the evaporator is divided into multiple evaporators such as a freezing evaporator and a refrigeration evaporator according to the storage room inside the refrigerator. In order to ensure the normal operation of each storage room, the connection relationship of refrigerant pipelines between multiple evaporators is complicated, the manufacturing cost is high, the failure rate is high, the overall cooling efficiency of the system is low, and energy is wasted

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