Vibration isolation hub for fans

Abstract

The invention provides a vibration-isolating hub for an air blower. On one hand, the vibration-isolating hub allows soft elastic characteristic in the twist direction and enhances the vibration abatement effect, and on the other hand, allows hard elastic characteristic in the direction perpendicular to the axis and in the prizing direction and effectively stables the rotation of main bodies of blades. The vibration-isolating hub (14) for the air blower has a rigid cylindrical member (18), a rigid connecting plate (20) which is rotated integratedly with the main bodies of the blades, and an elastomer which allows elastic connection of the cylindrical member (18) and the connecting plate (20). The vibration-isolating hub (14) is disposed at the center of the rotating air blower and achieves the effect of vibration isolation. The cylindrical member (18) is arranged at such a position that the cylindrical member and the connecting plate (20) are not overlapped in the radial direction, in a manner to wholly deviate along the axis direction relative to the outer members. The cylindrical member (18) and the connecting plate (20) are connected along the axis direction via the elastomer (22).

Description

technical field [0001] The invention relates to a vibration isolation hub for a fan, which is arranged at the center of a rotary fan and exerts a vibration isolation function between a rotating shaft and a blade main body by means of elastic deformation of an elastic body. Background technique [0002] In the past, as a rotary fan, since air is sucked from a certain range in the radial direction of a long cylindrical blade body, and then the sucked air is made to flow in a transverse direction inside the blade body, and at the same time, it is drawn from another certain range in the radial direction. A cross-flow fan (Cross Flow Fan, hereinafter, sometimes simply referred to as a fan) that blows out in a wide range can blow out wind in a wide band, so it is widely used as a rotary fan for air conditioners (air conditioners) and the like. [0003] Figure 6 shows an example of it. [0004] In the figure, 200 is a casing, 202 is a blade main body, and 204 is a motor that driv...

AI Technical Summary

Problems solved by technology

[0026] Generally, a vibration isolation hub for a rotary fan is composed of a rigid inner member that rotates integrally with the rotating shaft, a rigid outer member that rotates integrally with the blade body, and an elastic body that elastically connects the inner member and the outer member. The elastic properties in the torsional direction are soft, which improves the vibration reduction effect. On the other hand, including the problem that the elastic properties in the direction perpendicular to the axis and the prying direction become soft at the same time, there is also the problem of maintaining the blade body due to this. , the problem of unstable rotation

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