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Cross-flow fan

A cross-flow fan and fan technology, applied in radial flow pumps, components of pumping devices for elastic fluids, non-variable-capacity pumps, etc., can solve the loss of air volume, increase in flow path loss, and decrease in strength of cross-flow fans and other problems, to achieve the effect of improving yield, reducing fluid loss, and reducing the number of fan units

Active Publication Date: 2015-05-06
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, Patent Document 1 describes a technique in which, when a plurality of support plates are provided, an air volume loss occurs due to the plurality of support plates, resulting in an increase in flow path loss.
However, if the number of support plates is reduced in order to reduce the flow loss caused by the support plates, the strength of the cross flow fan will decrease.

Method used

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  • Cross-flow fan
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Examples

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Embodiment Construction

[0052] Next, a cross-flow fan provided in an indoor unit of an air conditioner will be described as an example of a cross-flow fan according to an embodiment of the present invention.

[0053] (1) Cross-flow fan in the indoor unit

[0054] figure 1 It is a figure which shows the outline of the cross section of the indoor unit 1 of an air conditioner. The indoor unit 1 has a main body casing 2 , an air filter 3 , an indoor heat exchanger 4 , a cross-flow fan 10 , a vertical baffle 5 and a horizontal baffle 6 . Such as figure 1As shown, an air filter 3 is arranged on the top surface of the main body casing 2 on the downstream side of the suction port 2a so as to face the suction port 2a. An indoor heat exchanger 4 is disposed further downstream of the air filter 3 . All the indoor air reaching the indoor heat exchanger 4 through the suction port 2a passes through the air filter 3 to remove dust.

[0055] The indoor heat exchanger 4 is configured by connecting a front side h...

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Abstract

A cross-flow fan is configured so that the strength of the cross-flow fan is increased while an increase in flow pass loss caused by the reinforcement member, such as a support plate, of the cross-flow fan is minimized. Blades (40) extend in the longitudinal direction from a support plate (50). An auxiliary ring (60) is located at the intermediate portions of the blades (40) in the longitudinal direction and is joined to the outer ends (40a) of the blades (40). The auxiliary ring (60) is located at a position away from support plate-side blade base sections (40c) of the blades (40) by a distance of 55% or more of the distance from the base sections (40c) of the blades (40) to the tip sections (40d) thereof.

Description

technical field [0001] The present invention relates to a cross-flow fan, particularly a cross-flow fan having resin-made blades. Background technique [0002] In the cross-flow fan used in the indoor unit of the air conditioner, a plurality of blades extending in the longitudinal direction are arranged between two disc-shaped or annular support plates arranged at both ends in the longitudinal direction. In addition, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 05-87086) and the like, a disc-shaped or annular intermediate plate is arranged between two support plates to reinforce the strength of the plurality of blades. . [0003] Summary of the invention [0004] The problem to be solved by the invention [0005] In addition, Patent Document 1 describes a technique in which, when a plurality of support plates are provided, an air volume loss occurs due to the plurality of support plates, resulting in an increase in flow path loss. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/04
CPCF04D17/04F04D29/283F04D29/30F04D29/662F05D2240/304F05D2300/43
Inventor 中井聪田中英志加川庆宪松本和弘西村和也
Owner DAIKIN IND LTD