Pressure differential defrosting device of evaporator in air cooler of refrigerated storage

Abstract

The invention discloses a pressure differential defrosting device of an evaporator in an air cooler of a refrigerated storage. The technical scheme provided by the invention is that left and right static pressure boxes are arranged on both sides of the air cooler, the two static pressure boxes are respectively provided with pressure differential fans, and the pressure differential fans are respectively connected to the lower left and upper right air outlets through the circulating air flues. Electric heaters are respectively arranged at the lower left and upper right ends of the evaporator. Electric air valves are respectively arranged on the air outlet between the two static pressure boxes and the air cooler, the upper and lower ends of the air cooler and the air inlet and return openings of a blowing fan. According to the device, a pressure differential fan, the static pressure boxes and the electric heaters are optimized and combined, and the device is directly contacted with the surface frost layer of the evaporator to defrost through hot air, so that the defrosting time is effectively shortened. Heated air flows circularly around the evaporator in the air cooler and in the static pressure boxes to defrost, so that the defrosting energy utilization ratio is improved, and meanwhile, the defrosting warehouse temperature wave in the refrigerated storage is avoided. The plurality of diffusers and electric air valves arranged effectively solve the problem of the defrosting dead angle.

Description

technical field [0001] The invention belongs to refrigeration and low-temperature refrigeration technology, in particular to a device for defrosting an evaporator in a cold air fan of a refrigerator. Background technique [0002] In today's society, people have higher and higher requirements for the quantity and quality of fresh fruits and vegetables. Refrigerators are the main equipment for storing fruits and vegetables after they are picked. At present, the cooling equipment in the fruit and vegetable refrigerated rooms mostly adopts the form of air coolers. In addition to the low temperature required for storage, in order to reduce the dry consumption of refrigerated agricultural and sideline products, the refrigerated storage is also required to maintain a relatively high air humidity. The "wet" environment happens to make the evaporator in the cold storage fan operate under the condition that is more prone to frost. After the evaporator is frosted, the heat transfer re...

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Problems solved by technology

[0003] The object of the present invention is to provide a device for defrosting the evaporator in the air cooler of the refrigerator by combining the principle of pressure difference with el...

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