Cooling by-pass structure of electric appliance control box of frequency conversion type air conditioner outdoor unit

Abstract

The invention relates to a cooling bypass structure of an electric control box for the outdoor unit of an inverter air conditioner. The structure includes a thickened control box faceplate and capillaries communicating the faceplate interior with a low temperature refrigerant pipe. A hollow cavity is formed between the front side and the back side of the thickened control box faceplate; skirt plates in up/down parallel arrangement are positioned in the hollow cavity of the faceplate, thereby forming rotary type up/down circulating passages. The upper part and the lower part of the control box faceplate are respectively connected with the capillaries, two capillaries are connected with the low temperature refrigerant pipe leading to an evaporator, and the hollow cavity of the control box faceplate communicates with the low temperature refrigerant pipe via the capillaries. When the air conditioner is in operation, the temperature of the control box is lowered by the low temperature refrigerant passing through the control box faceplate, so as to avoid fuse burnout and stoppage phenomena caused by over-high temperature of the electric control box. At the same time, the capillaries of the bypass structure can play the role of throttling decompression to the refrigerant system, thereby facilitating heat conversion of the refrigerant to the evaporator and optimizing the operation performance of the system.

Description

technical field [0001] The invention relates to an outdoor unit of an air conditioner, in particular to the structure of an electrical control box for an outdoor unit of an inverter type air conditioner. Background technique [0002] An air conditioner is an electrical device that regulates and maintains the indoor temperature at the user's desired condition, and is mainly composed of a refrigeration cycle system and an air cycle system. The air conditioning function of the air conditioner is completed by the refrigeration cycle system and the air cycle system. The refrigeration cycle system includes a heat exchanger, a compressor and throttling devices. The air circulation system includes a fan and a fan motor, an air inlet and outlet and an air filter. The operation of the refrigeration cycle system and the air cycle system of the air conditioner is controlled by the electrical control system, which controls the cooling / heating operation of the air conditioner, and perfo...

AI Technical Summary

Problems solved by technology

[0012] Aiming at the problem that the temperature of the electrical control box in the outdoor unit is too high during the use of the above-mentioned prior art inverter compressor, and the fuse burns out to cause the air conditioner to shut down, the present invention introduces a cooling bypass structure for the control box, which uses capillary tubes to reduce the low temperature inside the refrigeration system. The refrigerant is guided to circulate in the panel of the electrical control box to reduce the temperature of the electrical control box and avoid the phenomenon of fuse burnout and shutdown caused by the temperature of the electrical control box being too high

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