Air-conditioner outdoor unit hood with defrosting structure

Abstract

The invention belongs to the field of air conditioners, and relates to an air-conditioner outdoor unit hood with a defrosting structure, in particular to an air-conditioner outdoor unit capable of quickly defrosting. Due to more strong winds in winter, a large amount of heat is brought away by air flow, air-conditioner outdoor units are all mounted on the walls, temperature of one sides of the air-conditioner outdoor units are very low due to air current flow between the outdoor units and the walls, water is enabled to be frosted or frozen again by the strong winds when frost is molten into flow downwards along heat exchangers, consumed electrical energy is increased, and time for defrosting is prolonged. A steady-flow insulation cavity with the upper end closed is arranged on one side of a heat exchanger of an outdoor unit (1), transverse flow of air on two sides of the steady-flow insulation cavity is prevented through air blocking structures, and the rear side and / or the lower side of the steady-flow insulation cavity is provided with an opening serving as an air inlet of the outdoor unit (1). Hot air in a defrosting are is effectively prevented from escaping upwards by the steady-flow insulation cavity, air current flow is reduced, insulation effect is good, defrosting speed is increased, and heating effect and comfort of an air conditioner are improved.

Description

technical field [0001] An air-conditioning outdoor machine cover with a defrosting structure belongs to the field of air-conditioning, and in particular relates to an air-conditioning outdoor machine capable of rapidly defrosting. Background technique [0002] The most mature and widely used defrosting method among the commonly used defrosting methods for outdoor units of air conditioners is the reverse cycle defrosting mode. At present, most heat pumps use this method for defrosting. The working process is as follows: The flow direction is changed from heating to cooling. At the same time, the indoor unit stops running, and the high-temperature and high-pressure refrigerant from the compressor flows to the frosted outdoor unit heat exchanger to melt the frost layer of the heat exchanger and achieve the purpose of defrosting. In the frost mode, the heating operation must be stopped, and it takes 15% to 20% of the time to defrost. With the rapid increase of fog and haze, the ...

AI Technical Summary

Problems solved by technology

[0002] The most mature and widely used defrosting method among the commonly used defrosting methods for outdoor units of air conditioners is the reverse cycle defrosting mode. At present, most heat pumps use this method for defrosting. The working process is as follows: The flow direction is changed from heating to cooling. At the same time, the indoor unit stops running, and the high-temperature and high-pressure refrigerant from the compressor flows to the frosted outdoor unit heat exchanger to melt the frost layer of the heat exchanger and achieve the purpose of defrosting. In the frost mode, the heating operation must be stopped, and it takes 15% to 20% of the time to defrost. With the rapid increase of fog and haze, the frost on the outdoor unit will become more severe, and the time spent on defrosting the outdoor unit of the air conditioner will be longer. More and more, especially in the north of China, there are more strong winds in winter, and the air flow takes away a lot of heat. The outdoor units of air conditioners are installed on the wall, and the air flow between the outdoor unit and the wall causes the temperature Very low, when the frost melts into water and flows down the heat exchanger, the condensed water is easy to freeze, the power consumption increases, the defrosting time is prolonged, the defrosting effect is poor, and the heating effect and comfort are affected

At present, to overcome this problem, the device of increasing auxiliary heat is used to accelerate defrosting, which requires additional electric energy and increases power consumption.

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