2results about How to "Reduce operating speed" patented technology

The utility model discloses a low -noisy air -cooled fuel cell stack fan structure relates to battery stack heat dissipation technical field, including fan main part, the center of fan main part is provided with the installation cavity, the inside of installation cavity is provided with the mounting bracket, the one side of mounting bracket is provided with brushless motor, the inside of installation cavity is provided with fan blade, the back of fan main part is provided with control line, the outside of fan main part front end is provided with mounting panel, the four corners of mounting panel all are provided with an installation hole, the back of mounting panel is provided with rubber pad, and rubber pad is attached with mounting panel, the front of mounting panel is provided with mounting bolt, and mounting bolt is correspondingly provided with installation hole, mounting bolt and mounting panel and rubber pad through -connection, the mounting structure of this fan structure has the buffering effect, and the vibration of fan operation process can be effectively eliminated, reduces the noise of fan structure operation and produces, improves fan structure use effect.

The application discloses a refrigerator, a control method and system thereof, and relates to the technical field of electrical appliances.The refrigerator comprises: a freezing fan unit for cold quantity delivery of a first chamber, comprising one or more freezing fans; a refrigerating fan unit for cold quantity delivery of a second chamber, comprising one or more refrigerating fans; and a controller connected with the freezing fan unit, the refrigerating fan unit and the refrigerating machine unit, respectively, for controlling the duty cycle of the freezing fan unit and the refrigerating fan unit and the running speed of the compressor in several running modes.The double fans replace the traditional single fan, the running speed of the fan is reduced as a whole, and the noise of the refrigerator is reduced.Through independent setting of the freezing fan unit and the refrigerating fan unit, the running mode and the temperature of the chamber are independently controlled, the accuracy of temperature adjustment is improved, the flexibility of the running mode is increased, the system can realize a higher energy efficiency ratio, and energy consumption is reduced.