Industrial refrigerator evaporator coil defrosting device

Abstract

The invention relates to the technical field of manufacturing of light industrial instruments, and discloses an industrial refrigerator evaporator coil defrosting device which comprises an evaporator coil penetrating through a support at the top and the bottom of the support, vent holes which are symmetrical in pairs are formed in the top and the bottom of the support, and an electric heating wire is fixedly connected in the vent hole in the top in a sleeved mode. One end of the ventilation hole in the top is fixedly sleeved with an electric control valve, one end of the ventilation hole is fixedly connected with an air supply pipe, and movable grooves are formed in one end of the top and one end of the bottom of the support. Through the designed electric heating wire, the vent hole, the air supply pipe and the heating pipe, in the defrosting link of the refrigerator, high-pressure airflow can flow through the vent hole through the air supply pipe, is heated under the influence of the electric heating wire and then enters the heating pipe, the high-pressure airflow heats and melts frost on the outer side of the heating pipe, heat directly acts on frost and ice from inside to outside, and the defrosting effect of the refrigerator is improved. And the problem that heat is dissipated to other directions in the refrigerator due to an external heating pipe, and the temperature in the refrigerator is rapidly increased is solved.

Description

technical field [0001] The invention relates to the technical field of light industrial equipment manufacturing, in particular to a defrosting device for an evaporator coil of an industrial refrigerator. Background technique [0002] The industrial refrigerator is a device that uses circulating refrigeration technology for refrigeration in the manufacture of light industrial equipment. Its main working principle is to compress the gaseous high temperature and low pressure refrigerant into a gaseous high temperature and high pressure refrigerant through a compressor, and form a liquid high temperature and high pressure after passing through the heat exchange device. The refrigerant, and then the liquid high temperature and high pressure refrigerant flows through the throttling device (such as a capillary tube), so that the pressure of the liquid high temperature and high pressure refrigerant is reduced and evaporated, forming a gas-liquid two-phase low-temperature and low-pres...

AI Technical Summary

Problems solved by technology

[0003] In the process of refrigerant change, when the gas-liquid two-phase low-temperature and low-pressure refrigerant in the evaporator coil leaves the refrigerator and flows to the compressor, the content of liquid refrigerant in the gas-liquid two-phase is often too high due to insufficient heat absorbed. High, so that the compressor receives liquid refrigerant, resulting in a reduction in the service life of the compressor. At the same time, affected by the internal circulation of the gas inside the refrigerator, the moisture in the internal circulation gas will contact the evaporator coil located in the refrigerator. Frost and ice form on the surface of the coil, which hinders heat transfer and reduces the cooling efficiency of the refrigerator. The existing refrigerator will set a program to stop the compressor according to the time, and add a heater near the evaporator coil to make the heater last longer. The evaporator coil is heated for a long time to melt the frost and ice on it, and it is discharged from the pipe set at the bottom, but in this way, the contact area between the heater and the inside of the refrigerator is large, and the heating time is long, so that the heater evaporates during heating When the coil is installed, its temperature will affect the interior of the refrigerator, causing the temperature inside the refrigerator to rise rapidly in a short period of time

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