Abstract: The existing high-speed blender achieves the purpose of breaking up the food through the high-speed rotation of the blade. While the motor drove the high-speed rotation of the blade, it also generated a large amount of heat and its own vibration to generate relatively large noise. Took a certain model of high-speed blender on the market as an example, and studied the temperature of the motor and the noise of the high-speed blender base under standard test conditions through experiments and numerical simulations. The test results showed that the cooling air flow of the original prototype motor is 43.59 m³/h, the maximum temperature of the motor was under its allowable operating temperature rise critical value, and the base noise is 80.35 dB at 15000 rpm. On the basis of the original prototype, reducing the gap between the motor cover and the motor, switching to a split motor cover, and reducing the distance between the fan and the base pedestal, etc., the temperature and base noise of the motor during operation were reduced. The experimental results showed that the gap between the motor cover and the motor at 3.33 mm, splitting the motor cover and raising the base pedestal can make the motor temperature meet the operating temperature requirements, while the base noise was reduced to 75.03 dB, which significantly improved the experience of the high-speed blender.

Key words: High-speed blender, Motor temperature, Noise