Frost-free refrigerator cooling system

Abstract

The invention relates to a refrigeration system for a frost-free refrigerator, comprising a refrigeration system arranged with a refrigeration evaporator; a freezing system composed of a fin evaporator and a freezing evaporator that are connected in parallel; a switching device for switching between the fin evaporator and the freezing evaporator in the freezing system and realizing independent turning-on / off of the freezing system and the refrigeration system; a master control board for controlling the switching device, wherein the refrigeration system is connected with the freezing system in parallel and then connected with a compressor and a condenser to form a closed refrigerating loop. The refrigeration system combines the advantages of wind cooling system and direct cooling system, and has the advantages of high operating efficiency, rapid temperature drop, low energy consumption, saving energy and good food refrigeration and fresh-keeping effects.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a refrigeration system of a novel frost-free refrigerator. Background technique [0002] Existing freezers generally adopt a direct cooling system including a refrigeration evaporator and a freezing evaporator, which is commonly referred to as a direct cooling refrigerator; or an air-cooling system including a finned evaporator, which is commonly referred to as The so-called air-cooled refrigerator or frost-free refrigerator. The shortcomings of the direct cooling system are: (1) The cooling speed of the single freezer is slow, which is not conducive to the fast passage of meat and other foods through the ice crystal belt, and the freshness preservation performance is average; (2) After the system has been running for a period of time, the frost in the freezer is serious, affecting The heat exchange efficiency of the evaporator; (3) can only rely on shutdown to defrost, an...

AI Technical Summary

Problems solved by technology

The shortcomings of the direct cooling system are: (1) The cooling speed of the single freezer is slow, which is not conducive to the fast passage of meat and other foods through the ice crystal belt, and the freshness preservation performance is average; (2) After the system has been running for a period of time, the frost in the freezer is serious, affecting The heat exchange efficiency of the evaporator; (3) It can only rely on shutdown to defrost, and the frost layer is not easy to remove

The disadvantages of the air-cooled system are: (1) the operation process is noisy; (2) the energy consumption is relatively large, which is not energy-saving enough; (3) the moisture in the stored food is lost quickly, it is easy to dry, and the food preservation effect is poor.

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