Blower

A blower and cut-out technology, applied in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as blade cracking and blade damage, and achieve the effect of preventing damage

Active Publication Date: 2014-04-09
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a possibility that cracks may occur in the blade starting from the notch in the vicinity of the supporting member and the blade may be damaged.

Method used

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Examples

Experimental program
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Embodiment Construction

[0057] Next, embodiments of the present invention will be described.

[0058] The air blower 4 of this embodiment is applied to the indoor unit 1 of an air conditioner. The indoor unit 1 constitutes an air conditioner together with an outdoor unit (not shown), and performs cooling and heating of the room. Such as figure 1 As shown, the indoor unit 1 of the present embodiment includes internal equipment such as a casing 2 , a heat exchanger 3 housed in the casing 2 , a blower 4 , a filter 5 , and an electrical component box (not shown). The indoor unit 1 has an elongated shape in one direction as a whole, and is installed on a wall surface of the room so that its longitudinal direction becomes horizontal.

[0059] An air inlet 2 a is formed on the upper surface of the housing 2 , and an exhaust port 2 b is formed on the lower surface of the housing 2 . In the vicinity of the exhaust port 2b, the horizontal damper 6 for adjusting the wind direction in the vertical direction a...

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PUM

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Abstract

The invention provides a blower which prevents damage of blades of a blower which comprises a plurality of blades(20) arranged along the peripheral direction. A plurality of notch portions (21) are formed on the peripheral side wing end of the blades (20) along the axial direction. The notch portions (21) comprise more than two first notch portion (21A), and second notch portion (21B, 21C) thicker than the first notch portion (21A). The size of the second notch portion (21B, 21C) is similar to that of the first notch portion (21A).

Description

technical field [0001] The present invention relates to a blower having a blade provided with a plurality of cutouts. Background technique [0002] A blower such as a cross-flow fan or a Sirocco fan used in an indoor unit of an air conditioner includes a plurality of blades arranged in a circumferential direction. Both ends in the direction of the rotation axis of each blade are supported by annular or disk-shaped support members. Moreover, in this air blower, aerodynamic noise (wind noise) generated by the air flow passing through the air blower often becomes a problem. In response to this problem, a blower has been proposed that reduces aerodynamic noise (wind noise) by providing a plurality of cutouts on the outer peripheral side of the blade to reduce the wake vortex generated on the blowing side of the blower (for example, refer to Patent Document 1). . [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/04F04D29/30
Inventor 中井聪
Owner DAIKIN IND LTD
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