Method and device for controlling fan motor of refrigerator and refrigerator

Abstract

The invention discloses a method and device for controlling a fan motor of a refrigerator and the refrigerator. The refrigerator comprises a compressor, a refrigerating chamber air door and a variable-temperature chamber air door. The method for controlling the fan motor of the refrigerator comprises the following steps that the environment temperature of the refrigerator and the current rotating speed of the compressor are obtained, the environment temperature state of the refrigerator is determined according to the environment temperature, the opening condition of the refrigerating chamber air door and the opening condition of the variable-temperature chamber air door are further obtained, and the voltage of the fan motor is determined according to the environment temperature state, the current rotating speed of the compressor, the opening condition of the refrigerating chamber air door and the opening condition of the variable-temperature chamber air door. According to the method for controlling the fan motor of the refrigerator, the voltage of the fan motor is determined according to the environment temperature state, the current rotating speed of the compressor, the opening condition of the refrigerating chamber air door and the opening condition of the variable-temperature chamber air door, then the rotating speed of the fan motor is determined, the cooling speed is improved, the starting time and the stopping time are optimized, the energy-saving effect is achieved, and user experience is greatly improved.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a method and device for controlling a fan motor of a refrigerator and the refrigerator. Background technique [0002] Refrigerators in the related art generally adopt a control method for the speed of the fan motor: low speed under normal conditions, and high speed under the following conditions: 1. High speed 10s before the compressor is turned on; 2. When the ambient temperature is higher than 35°C 3. It is high speed in special mode, such as quick cooling, quick freezing, etc. [0003] However, the above method for controlling the speed of the fan motor does not make good use of the speed of the fan motor to balance the temperature changes in the box, and does not take into account the difference in the speed of the fan motor at different compressor speeds, for example, at high compressor speeds , has been using a large fan motor speed to send to the refrigerati...

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Problems solved by technology

[0003] However, the above method for controlling the speed of the fan motor does not make good use of the speed of the fan motor to balance the temperature changes in the box, and does not take into account the difference in the speed of the fan motor at different compressor speeds, for example, at high compressor speeds , has been using a large fan motor speed to send to the refrigeration and variable temperature room, which leads to a waste of part of the cooling capacity of the compressor. In addition, there is a problem of distribution waste when distributing the cooling capacity of each room

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