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Refrigeratory refrigerating system in cold chain

A refrigeration system and cold storage technology, which is applied to household refrigeration equipment, coolers, defrosting, etc., and can solve the problems of increased operating current and noise of compressors, not being the most energy-efficient, and insufficient use of compressor power.

Inactive Publication Date: 2013-02-13
JIANGSU SUSHI MEAT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot gas defrosting also has obvious disadvantages: First, the refrigerant entering the suction port of the compressor contains liquid, which is likely to cause liquid shock of the compressor and shorten the service life of the compressor
The second is that the suction pressure increases, which reduces the compression ratio of the compressor, reduces the specific volume of the refrigerant on the suction side of the compressor, increases the circulation of the refrigerant, and increases the operating current and noise of the compressor.
Third, due to the reverse circulation of the refrigerant, the outdoor atmosphere is cooled on the condenser side during defrosting, and the resulting cooling capacity is wasted, so that the power consumed by the compressor is not fully utilized.
Therefore, this method of defrosting is not the most energy-efficient

Method used

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Embodiment Construction

[0062] like figure 1 As shown, the refrigeration cycle system in the present invention is mainly composed of: compressor 6, oil separator 7, refrigeration solenoid valve 11, condenser 8, liquid receiver 9, first hand valve 18, filter, second hand valve 19 , the first one-way valve 15, the second one-way valve 16, the first expansion valve 14, the second expansion valve 17, the first air cooler 1, the second air cooler 2, the first return valve 12, the second Air return valve 13 and gas-liquid separator 5 are formed. When the temperature of the cold storage is higher than the set temperature, the microcomputer control system outputs the cooling signal COL, which is connected to the coil of the intermediate relay JZ1 through the pressure protector KP15, JZ1 pulls in, and its normally open contacts respectively control the compression of the compressor 6. The machine contactor, the condenser fan contactor of condenser 8, the motor contactor of air cooler 1, and the motor contact...

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Abstract

The invention relates to a refrigeratory refrigerating system in a cold chain. The refrigeratory refrigerating system in the cold chain is internally provided with at least two air coolers; when the air coolers act as evaporators together in refrigeration, a refrigeration circulation system is realized; and when the air coolers act as condensers and evaporators in turn, a defrosting circulation system for defrosting step by step is realized. The refrigeratory refrigerating system in the cold chain is controlled by a micro computer control system to operate the refrigeration circulation system or the defrosting circulation system, overcomes the defects of the existing refrigeratory defrosting mode, and improves the refrigeratory defrosting efficiency.

Description

technical field [0001] The refrigerator defrosting method and the refrigeration system using the defrosting method of the present invention are suitable for refrigerators using freon refrigerants, especially for fluorine system refrigerators using air coolers as evaporators. These cold storages include: food freezing processing and cold storage, pharmaceutical cold storage, fruit cold storage, vegetable cold storage, tea cold storage and other industrial cold storage. By improving the defrosting mode of the fins of the evaporator, the defrosting efficiency of the evaporator and the safety performance of the refrigeration unit are improved, energy is saved, and the operating cost of the cold storage is reduced. The invention relates to the fields of refrigeration, electronics, electrical appliances, and automatic control. Background technique [0002] Cold storage is an important equipment for food production, processing, and business enterprises, and it is also the infrastr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D21/06F25D19/00F25D29/00
Inventor 张静蒋维众张楠史培磊
Owner JIANGSU SUSHI MEAT
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