Fan fixing structure for indoor machine of air conditioner

Abstract

The invention relates to a fan fixation structure in an indoor air conditioner which comprises a through-flow fan fixation end with inner holes, a front end of motor shaft which is plugged into the inner holes in the fixation end of the through-flow fan, bolts which penetrate the outside short axis sleeve at the fixation end of the through-flow fan; wherein, the outside of the front end of the motor shaft is provided with a tangential section and the inner holes in the fixation end of the through-flow fan is provided with a tangential section; the bolt punch holes of the short axis sleeve penetrate the tangential section of the inner holes at the fixation end of the through-flow fan, and the shafts of the bolt punch holes are perpendicular to the tangential section of the inner holes of the fixation end. When the fixation structure related by the invention is used for fixing the through-flow fan with the motor shaft, the front end of the motor shaft is plugged into the inner hole in the fixation end of the through-flow fan; the bolt penetrates the tangential section of the bolt punch hole and the inner hole of the outside short axis sleeve at the fixation end of the through-flow fan, and tightly presses the tangential section at the outside of the front end of the motor shaft, which leads the through-flow fan and the motor shaft to contact with the surfaces at a force transfer part, thereby leading the fan to run steadily and reducing noise.

Description

technical field [0001] The invention relates to an air conditioner fan, in particular to a fixing structure for an air conditioner indoor unit fan and a motor shaft. Background technique [0002] An air conditioner is an electrical device that regulates and maintains the indoor temperature at the user's desired condition, and is mainly composed of a refrigeration cycle system and an air cycle system. The air conditioning function of the air conditioner is completed by the refrigeration cycle system and the air cycle system. The refrigeration cycle system includes a heat exchange device, a compressor and a throttling device. The air circulation system includes a fan and a fan motor, an air inlet and outlet and an air filter. The operation of the refrigeration cycle system and the air cycle system of the air conditioner is controlled by the electrical control system, which controls the cooling / heating operation of the air conditioner, and performs room temperature setting an...

AI Technical Summary

Problems solved by technology

[0012] Aiming at the problems of unstable point contact force transmission and fixing structure between the cross-flow fan and the motor shaft in the prior art and high noise, the present invention introduces a surface contact force transmission and fixing structure. By making the cylindrical inner hole at the fixed end of the cross-flow fan become It is an inner hole with a chord section to realize the surface-to-surface contact between the cross-flow fan and the axial force transmission of the motor

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