Air conditioner control method and device and air conditioner
AssigneesGd Midea Air-Conditioning Equipment Co., Ltd., Midea Group Co., Ltd.
InventorDashu ZOU
Life of this patent
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Abstract
A control method and device and an air conditioner are provided. The air conditioner has an outdoor condenser, an indoor evaporator, a first electronic expansion valve, a throttle valve, and a heat dissipation coolant pipe arranged in an electric control box. By utilizing the control method and device, the air conditioner uses the heat dissipation coolant pipe to dissipate heat from the electric control box of the air conditioner. The heat generated by the electric control box can thus be timely removed. The temperature of the elements of the air conditioner can be lowered and the reliability and service life of the air conditioner can be improved.
Claims20
An air conditioner comprising:
- an outdoor condenser,
- an indoor evaporator,
- a first electronic expansion valve,
- a throttle valve, and
- a heat dissipation coolant pipe arranged in an electric control box,
- wherein:
- the outdoor condenser is communicated with a first end of the heat dissipation coolant pipe via the first electronic expansion valve,
- the indoor evaporator is communicated with a second end of the heat dissipation coolant pipe via the throttle valve,
- the first electronic expansion valve is configured to throttle a coolant in a heating mode, and
- the throttle valve is configured to throttle the coolant in a cooling mode.
A control method for an air conditioner comprising a compressor, a first electronic expansion valve and a second electronic expansion valve, the method comprising:
- acquiring an outdoor ambient temperature when the air conditioner is turned on in a cooling mode,
- acquiring a preset current threshold, a preset compressor frequency threshold and a preset current difference threshold corresponding to the outdoor ambient temperature,
- acquiring, at the time when the compressor has started for a first preset time, a working current as a first current,
- acquiring, at the time when the compressor has started for a second preset time, a working current as a second current, and acquiring, at the time when the compressor has started for the second preset time, a compressor frequency,
- detecting and confirming that the following three conditions are met at the same time, and controlling the air conditioner to stop and exchanging control strategies for the first electronic expansion valve and the second electronic expansion valve, wherein the three conditions are:
- the second current being greater than the preset current threshold,
- a difference between the second current and the first current being greater than the preset current difference threshold, and
- the compressor frequency at the time when the compressor has started for the second preset time being less than the preset compressor frequency threshold.
A control method for an air conditioner, comprising:
- acquiring an outdoor ambient temperature in a cooling mode of the air conditioner,
- detecting and confirming that the outdoor ambient temperature is equal to or less than a preset outdoor ambient temperature threshold, and acquiring a temperature of a middle region of an outdoor condenser of the air conditioner, and
- controlling a rotation speed of an outdoor fan and an opening degree of a throttle valve of the air conditioner, according to the temperature of the middle region of the outdoor condenser.
An air conditioner comprising an outdoor condenser, an outdoor fan, a throttle valve, and a controller, wherein the controller is configured to:
- acquire an outdoor ambient temperature in a cooling mode of the air conditioner,
- detect and confirm that the outdoor ambient temperature is equal to or less than a preset outdoor ambient temperature threshold, and acquire a temperature of a middle region of the outdoor condenser, and
- control a rotation speed of the outdoor fan and an opening degree of the throttle valve, according to the temperature of the middle region of the outdoor condenser.
Dependencies are inferred from the claim text.