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Centrifugal fans and air conditioners using such centrifugal fans

A centrifugal fan and air conditioner technology, applied in the direction of machines/engines, pumping devices for elastic fluids, mechanical equipment, etc., can solve the problems of increased manufacturing costs, highly complex injection molding technology, poor productivity and work efficiency, etc. problems, to achieve the effect of increasing productivity, improving efficiency and reducing noise

Active Publication Date: 2016-08-17
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in order to injection-mold the plurality of blades 22 provided on the hub 21 and make these blades 22 have a twisted three-dimensional shape 22a like an S-shape, a highly complicated injection molding technique is required, thereby increasing the manufacturing cost.
Furthermore, when the three-dimensional blades 22 having the above-described small-sloped wingtips 22b formed on the upper side are injection-molded one by one and formed on the hub 21, work efficiency in view of productivity may be extremely deteriorated.

Method used

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  • Centrifugal fans and air conditioners using such centrifugal fans
  • Centrifugal fans and air conditioners using such centrifugal fans
  • Centrifugal fans and air conditioners using such centrifugal fans

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Embodiment Construction

[0027] Embodiments of a centrifugal fan and an air conditioner using the centrifugal fan will be described in detail below with reference to the accompanying drawings. Where possible, similar reference numerals are used to designate similar elements, and repeated descriptions are omitted.

[0028] The centrifugal fan according to these embodiments can be applied to various types of air conditioners that are required to generate less noise when rotating rapidly, for example, indoors.

[0029] The centrifugal fan according to the embodiments may include a hub that is rotated at a high speed by a rotational force of a motor. Multiple blades are formed in or on the hub, and each blade can have a Gurney flap on its tip, which can reduce noise, increase fan efficiency and make it easy to injection mold.

[0030] Figure 5 is a perspective view of a centrifugal fan according to one embodiment. Figure 6 is not shown shroud Figure 5 A perspective view of the centrifugal fan shown...

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Abstract

The invention provides a centrifugal fan and an air conditioner using the centrifugal fan. A Gurney flap in the form of a rectangular plate or an S-shaped twisted Gurney flap may be formed in the hub of the centrifugal fan or in the tip of a blade disposed on the hub, thereby effectively reducing noise and improving efficiency. In addition, blades with Gurney flaps can be easily integrally formed with the hub to increase productivity.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Application No. 10-2012-0127824 filed on November 13, 2012, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The invention relates to a centrifugal fan and an air conditioner using the centrifugal fan. Background technique [0004] figure 1 A centrifugal fan used in a general air conditioner is shown. Such a centrifugal fan 10 for an indoor unit or equipment such as an air conditioner may include a hub 11 , a plurality of blades 12 and a shroud 13 . [0005] Such as figure 1 As shown, when the hub 11 with a plurality of blades 12 rotates at a high speed in the counterclockwise (P) direction under the action of the rotating force of the motor, the fluid sucked through the central hole located in or at the upper side of the shroud 13 is The plurality of vanes 12 formed in the hub 11 are discharged to the side surface N. As shown ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/30F04D29/66
CPCF04D29/281F04D29/30F05D2240/304F04D29/44F04D29/282
Inventor 孙常赫金贞勋孙旻守
Owner LG ELECTRONICS INC