Method and device for defrosting and maintaining pressure of refrigerators

Abstract

The invention relates to a method and a device for defrosting, pressure maintaining and energy conservation of a refrigerator, and pressure relief and damping during start-up of a compressor. The device for the defrosting and pressure maintaining of the refrigerator and the pressure relief and damping during the start-up of the compressor comprises an evaporator, a compressor, a condenser, a start-up / defrosting branch, a capillary and a filter. The compressor is connected with the evaporator, the start-up / defrosting branch and the condenser respectively; the condenser is connected with the filter; the filter is connected with the capillary; and the capillary is connected with the evaporator. The device is characterized by further comprising an electromagnetic valve and a one-way valve, wherein the electromagnetic valve is arranged among the evaporator, the capillary and the start-up / defrosting branch, and the one-way valve is arranged between the compressor and the condenser. The method and the device have the benefits that defrosting is realized without an electric heater, pressure maintaining and energy conservation are realized without shutdown, pressure relief and damping are realized during the start-up of the compressor, and problems of difficult start-up of a frequency conversion system of the refrigerator and great vibration during the start-up are solved. The method and the device are applicable to various refrigerators.

Description

technical field [0001] The invention relates to refrigerator technology, in particular to a method and device for defrosting and maintaining pressure of a refrigerator. Background technique [0002] After the air-cooled refrigerator has been in operation for a period of time, frost will form on the surface of the evaporator. If it is not removed in time, it will affect the refrigeration effect of the refrigerator and reduce the refrigeration performance of the refrigerator. At present, air-cooled refrigerators use two methods to defrost, one is to use electric heating tubes to defrost, such as Figure 1 The second is to defrost by bridging the defrosting branch between the inlet of the condenser and the inlet of the evaporator, such as Figure II shown. Among them, the problem of the first method is that the defrosting by electric heating relies on the heat radiation of the electric heating tube to defrost the evaporator, and the defrosting speed is very slow, which consume...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose a method and device that can be used for both defrosting and pressure maintaining in refrigerators.

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