Electric heating defrosting method with aid of external air of refrigerator

An auxiliary electric heating and external air technology, applied in defrosting, household refrigeration equipment, lighting and heating equipment, etc., can solve the problems of large temperature fluctuations in refrigerators, rising evaporator temperatures, and increased cooling loads in refrigerators. In winter working conditions, the energy saving is obvious, the amount of secondary frosting is reduced, and the effect of reducing air humidity

CN105222478AActive Publication Date: 2016-01-06TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-01-06

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Abstract

The invention discloses an electric heating defrosting method with the aid of external air of a refrigerator. A heat preservation box is arranged on the upper portion of a storage house of the refrigerator, and an inlet and an outlet of the heat preservation box are provided with a first electric air valve and a second electric air valve. Two air passages extending out of the storage house of the refrigerator are arranged at the top of the heat preservation box, and a third electric air valve and a fourth electric air valve are arranged in the two air passages. An evaporator is arranged in the heat preservation box, an electric heater is arranged in the evaporator, and an air circulation passage is arranged between the bottom of the evaporator and a bottom plate of the heat preservation box. An inlet of the evaporator is connected with a throttling device, and the outlet of the evaporator is connected with the air sucking port of a compressor. The inlet of a condenser is connected with the air exhausting port of the compressor, and the outlet of the condenser is connected with the throttling device. During electric heating defrosting, the external air of the refrigerator and opening and closing of the electric air valves assist in electric heating defrosting, so that the electric heating defrosting time is shortened, the operation energy consumption of a whole system is reduced, and it is guaranteed that the temperature in the refrigerator during defrosting is relatively stable.
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Description

[0001] This invention application is a divisional application of the invention patent application "A device for assisted electric heating and defrosting using the outside air of a refrigerator and its operation mode". The application date of the parent application is March 19, 2014, and the application number is 2014101027764. technical field

[0002] The invention belongs to the field of low temperature and cold storage, and more specifically relates to a device and its operating mode that use the outside air of the refrigerator to assist electric heating and defrosting. Frost. Background technique

[0003] At present, the total capacity of cold storage in my country is increasing year by year, and the defrosting problem of cold storage has always been a hot topic in the field of low temperature and cold storage. In order to make agricultural and sideline foods have a better fresh-keeping effect, it is necessary to provide a "low temperature and high humidity" environment i...

Examples

Embodiment Construction

[0025] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0026] as attached figure 1 As shown, the structure schematic diagram of the device of the present invention using the outside air of the refrigerator to assist electric heating and defrosting, 1 is the storage room of the cold storage, 2 is the incubator, 3 is the evaporator, 4 is the electric heater, and 5 is the first electric damper , 6 is the second electric air valve, 7 is the third electric air valve, 8 is the fourth electric air valve, 9 is a throttling device, 10 is a condenser, and 11 is a compressor.

[0027] Set an incubator in the upper space of the cold storage room, set the first electric air valve and the second electric air valve at the inlet and outlet of the incubator; set two air ducts extending out of the cold storage room on the top of the incubator, and respectively Set the third electric air valve and the fourth electric a...