Variable flow hot gas defrosting mechanism of small-sized refrigerating system

A refrigeration system, hot gas defrosting technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of increasing the risk of maintenance equipment, fixed flow rate that cannot be adjusted, and complex steering valve structure, etc., to achieve stable and efficient defrosting , High defrosting efficiency, simple solenoid valve effect

Inactive Publication Date: 2020-11-06
上海阔帛制冷机械有限公司
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Problems solved by technology

The electric heating defrosting method adopts the electric heating method, the efficiency is very low, and there is a danger of electric leakage in the electric heating; the steering valve used in the hot gas defrosting of the steering valve has a complex structure, the flow rate is fixed and cannot be adjusted, and the response is not fast enough, which increases maintenance equipment risks of

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  • Variable flow hot gas defrosting mechanism of small-sized refrigerating system

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Embodiment Construction

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0012] refer to figure 1 , a variable flow hot gas defrosting mechanism for a small refrigeration system, including a compressor 1, a one-way solenoid valve 3, and an evaporator 5. The output port of the compressor 1 is connected with three or more parallel one-way solenoid valves through a gas pipe, three One end of one or more one-way solenoid valves is respectively connected to the evaporator 5 through the air pipe, without passing through the throttling device 4, directly transfers the heat of the medium to the snow and frost on the surface of the evaporator 5, thereby melting it and exchanging heat. The finished medium returns to the compressor 1 through the air...

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Abstract

The invention discloses a variable flow hot gas defrosting mechanism of a small-sized refrigerating system. The variable flow hot gas defrosting mechanism of the small-sized refrigerating system comprises a compressor; three or more parallel one-way electromagnetic valves are connected to an outlet of the compressor through gas pipes; one ends of the three or more parallel one-way electromagneticvalves are respectively connected with an evaporator; without a throttling device, heat of a medium is directly transmitted to snow and frost on the surface of the evaporator so that the snow and frost are melted; the medium finishing heat exchanging returns to the compressor via a gas return pipeline; and this cycle is repeated (like solid lines in a drawing, not the dotted line part). Accordingto the variable flow hot gas defrosting mechanism of the small-sized refrigerating system, by using the one-way electromagnetic valve combination, the circulating hot gas defrosting efficiency is high; and moreover, the flow can be adjusted according to defrosting gas return pressure change; and meanwhile, electromagnetic valve control and structure are simple, mature and stable.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a variable flow hot gas defrosting mechanism for a small refrigeration system. Background technique [0002] In the refrigeration system, the refrigerant undergoes continuous refrigeration cycles, and continuously exchanges heat with the air on the surface of the evaporator. The low temperature causes frosting, which hinders the conduction and distribution of cold energy in the refrigeration evaporator (pipe), and affects the cooling effect. When the thickness of the frost layer (ice layer) on the surface of the evaporator reaches a certain level, the refrigeration efficiency even drops below 10%, resulting in a large waste of electric energy and shortening the service life of the refrigeration system. Therefore, it is necessary to carry out the defrosting operation of the cold storage in an appropriate cycle. The purpose of defrosting is to improve the cooling efficiency o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B41/04F25B49/02
CPCF25B47/02F25B49/02F25B2347/02
Inventor 程如岐高艺陈伟
Owner 上海阔帛制冷机械有限公司
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