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Air conditioner

An air conditioner and air technology, applied in air conditioning systems, space heating and ventilation, heating methods, etc., can solve the problems of harsh noise, insufficient air volume of cross-flow fans, and inability to ensure sufficient air volume of cross-flow fans, so as to reduce noise, Realize the effect of air volume

Inactive Publication Date: 2009-08-26
DAIKIN IND LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned Patent Documents 1 to 3, there is a problem that sufficient air volume cannot be ensured in the entire axial range of the cross-flow fan, especially the air volume at both ends of the cross-flow fan is insufficient.
Moreover, regarding the noise, although a certain degree of noise reduction has been achieved, the noise is still harsh when running late at night, and there is a problem that further noise reduction is required

Method used

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Examples

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. figure 1 A partially cutaway perspective view showing an indoor unit 1 of an air conditioner, figure 2 A sectional view of the indoor unit 1 is shown. A front grill 3 and a front panel 4 are mounted on the front side of a case main body 2 constituting the casing of the indoor unit 1, and an air outlet 5 is provided at a corner portion of the front lower portion.

[0032] and, if figure 2 As shown, inside the casing main body 2 is provided a blowing path 7 through which intake air flows toward the outlet 5 , and an indoor heat exchanger 6 having a reverse V-shaped cross section is arranged upstream of the blowing path 7 . Further, on the downstream side of the indoor heat exchanger 6, a cross-flow fan 10, a tongue portion 11, and a rear guide portion 12 are provided in this order. The fan rotor 10a of the cross-flow fan 10 is arranged to be figure 2 The el...

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Abstract

The present invention provides an air conditioner having, in order to reduce noise with sufficient amount of airflow achieved, a heat exchanger, a cross flow fan, a tongue section (11), and an outlet opening. A comb-like section (20) formed by alternately arranging comb teeth (21) and grooves (22) is placed at the tongue section (11) facing the cross flow fan, along the longitudinal direction of the tongue section (11). The grooves (22) include deep grooves (22a) and shallow grooves (22b). The comb-like section (20) has a deep groove comb-like section (20a) constructed from comb teeth (21) and the deep grooves (22a) and a shallow groove comb-like section (20b) constructed from comb teeth (21) and the shallow grooves (22b).

Description

technical field [0001] The present invention relates to an air conditioner using a cross-flow fan, in particular to an indoor unit of the air conditioner. Background technique [0002] Generally, in the indoor unit of an air conditioner, a cross-flow fan is often used as a blower, and a front tongue (stabilizer) is provided on the return side of the cross-flow fan in order to reduce noise generated during operation of the cross-flow fan. In this way, as a conventional example that intends to reduce noise, for example, Japanese Patent Laid-Open No. 11-118177 (Patent Document 1), Japanese Patent Laid-Open No. 2005-90764 (Patent Document 2), Japanese Patent Laid-Open No. 2005- Publication No. 300133 (Patent Document 3). [0003] In the aforementioned Patent Document 1, a cross-flow fan is used as the blower, and an air introduction portion is provided on the tongue, and the opening surface of the air introduction portion gradually expands from the tongue area to the air suctio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/00F24F13/08F24F1/0063
CPCF24F13/24F24F2001/0048F24F1/0025F24F1/0007F24F1/0057F24F1/0063
Inventor 佐藤公二本庄稔
Owner DAIKIN IND LTD
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