A draught fan vibration-isolating hub and a manufacturing method of a rotating draught fan
A fan and vibration isolation technology, which is applied to machines/engines, components of pumping devices for elastic fluids, mechanical equipment, etc., can solve the problems of rising cost of forming molds, achieve retention, suppress deformation, and improve shaking Effect
Inactive Publication Date: 2014-01-22
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[0031] In this case, the cost required for forming the mold increases, and, when necessary, it is necessary to Figure 11 The cylindrical vibration isolation hub 210 shown with Figure 14 When converting between the isolating hubs 230 shown, the conversion cannot be made using the same forming tooling
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[0076] Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0077] exist figure 1 In , reference numeral 10 is a turbo fan as a rotary fan, which has a fan main body 12 and a vibration isolation hub 14 provided at the center of the fan main body 12 .
[0078] The turbo blower 10 blows out the air sucked in the central side toward the outer peripheral side, and the fan main body 12 includes a disc-shaped main board 16, an annular shroud 18 arranged to face the main board 16, and a plurality of width direction Both ends of the blade are joined to the above-mentioned main plate 16 and the vane 20 of the shroud 18 .
[0079] Here, each blade 20 extends rearward from the inner peripheral side to the outer peripheral side in the rotational direction. That is, the end portion on the inner peripheral side is located on the advancing side in the rotation direction with respect to the end portion on the outer peripheral side.
[00...
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The invention provides a draught fan vibration-isolating hub and a manufacturing method of a rotating draught fan. The draught fan vibration-isolating hub may achieve a soft characteristic of a spring in a torsion direction so as to enhance a vibration suppressing effect. In another aspect, the draught fan vibration-isolating hub may achieve a hard characteristic of the spring in a levering direction and a direction vertical to an axis so as to effectively achieve stabilization of the maintaining and the rotating of the draught fan main body. In addition, an inner cylinder member and a rotating shaft can be connected by using a conventional usually-used connecting structure. The draught fan vibration-isolating hub comprises an inner cylinder member fixed on a rotating shaft, an annular connecting board joined to the main body side of the draught fan, and an elastomer through which the inner cylinder member and the annular connecting board are connected elastically. The draught fan vibration-isolating hub is arranged on the central portion of the rotating draught fan to function a vibration-isolating effect. An annular flange portion is disposed in the inner cylinder member so as to be opposed to the connecting board in an axis direction. In addition, the opposite faces of the flange portion and the connecting board are elastically connected in the axis direction by the connecting portion of the elastomer in the axis direction.
Description
technical field [0001] The present invention relates to a vibration isolation hub for a fan installed at the center of a rotary fan, utilizing elastic deformation of an elastic body to provide vibration isolation between a rotating shaft and a fan body, and a method for manufacturing a rotary fan with the vibration isolation hub. Background technique [0002] Conventionally, as a rotary fan for an air conditioner (air conditioner) etc., a rotary fan with the following structure is known, such as Figure 11 (This example is an example of a propeller fan), the rotating fan has a vibration-isolating hub 210 at the center. The hole 202 is used to receive the integral rotational driving force of the rotating shaft 200; the rigid outer cylinder member 206 surrounds the inner cylinder member 204 at a position spaced from the inner cylinder member 204 in the radial direction; and rubber (vulcanized rubber) etc. The cylindrical elastic body 208 is used to elastically connect the inne...
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Login to View More IPC IPC(8): F04D29/26B29C39/10
Inventor 角崎雄介