Air conditioning outdoor unit, air conditioner and control method of air conditioner

Abstract

The invention discloses an air conditioning outdoor unit, an air conditioner and a control method of the air conditioner. The air conditioning outdoor unit comprises a shell, an outdoor heat exchanger, a fan and a shielding assembly, wherein the shell is provided with an air inlet and an air outlet, the outdoor heat exchanger is located in the shell, the fan is located in the shell, and the shielding assembly is connected to the shell and can at least partially move relative to the shell so that the air outlet amount of the air outlet can be adjusted. According to the air conditioning outdoorunit, the shielding assembly is connected to the shell so that the shielding assembly can partially move relative to the shell to adjust the air outlet amount of the air outlet, meanwhile, the shielding assembly can return a relatively high-temperature gas flowing out from the air outlet to the shell so as to adjust the temperature in the shell, and therefore the condensation pressure of a refrigerant can be adjusted, the problem that the working performance of the air conditioner is influenced due to too low condensation pressure is solved, and operation of the air conditioning outdoor unit is more stable.

Description

technical field [0001] The present invention relates to the technical field of electric appliances, in particular, to an air conditioner outdoor unit, an air conditioner and a control method thereof. Background technique [0002] The ambient temperature for refrigeration of multi-connected air conditioners is generally required to be greater than -5°C, but for some special places and regions, when the outdoor ambient temperature is as low as -15°C, there may still be cooling requirements. For example, in the large computer rooms and electronic equipment rooms in the building, the machines and equipment in these places will continue to heat up during operation, and there is no ventilation condition, so the air conditioner is required to still be able to cool down in this low temperature environment. However, when the outdoor ambient temperature is very low, even if the outdoor fan is at the minimum speed, the condensing pressure on the outdoor side will still drop rapidly, so...

AI Technical Summary

Problems solved by technology

However, when the outdoor ambient temperature is very low, even if the outdoor fan is at the minimum speed, the condensing pressure on the outdoor side will still drop rapidly, so the evaporating pressure after throttling will be lower, which will easily cause frost on the indoor evaporator and reduce the cooling effect. very poor

In addition, the evaporation of the refrigerant is not complete, which may easily cause the compressor to return liquid and damage the compressor.

After the external fan is completely turned off, due to the existence of the windshield, the heat dissipation is too poor, causing the system pressure to rise rapidly, and the system pressure is difficult to stabilize

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