Diagonal flow fan and air conditioner equipped with the diagonal flow fan

A fan and oblique flow technology, applied in the field of oblique flow fans, can solve problems such as increased noise, unpleasant noise, and difficult molding

Inactive Publication Date: 2012-02-08
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in this conventional oblique flow fan, if the interval between the leading edge 11a and the trailing edge 11b of the adjacent blade is not properly designed, the trailing edge vortex generated from the trailing edge 11b will interfere with the downstream blade 11, resulting in increased noise
In particular, if considerable turbulence hits the downstream blades 11, the sound of the blades turning will increase significantly, which results in an unpleasant noise at a certain

Method used

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  • Diagonal flow fan and air conditioner equipped with the diagonal flow fan
  • Diagonal flow fan and air conditioner equipped with the diagonal flow fan
  • Diagonal flow fan and air conditioner equipped with the diagonal flow fan

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Embodiment Construction

[0023] This application is based on Application No. 2010-167974 filed in Japan on July 27, 2010, the entire contents of which are expressly incorporated herein by reference.

[0024] figure 1 is a sectional view of an outdoor unit of an air conditioner having a diagonal flow fan according to the present invention, and figure 2 It is a perspective view of a diagonal flow fan. image 3 and Figure 4 They are the front view and side view of the diagonal flow fan, respectively.

[0025] The outdoor unit of the air conditioner is provided with a main body 1 in which a suction port 2 is formed. The main body 1 accommodates a heat exchanger 3 , a fan 4 , a fan motor 5 for driving the fan 4 , and a compressor 8 . The compressor 8 is separated from the heat exchanger 3 , the fan 4 and the fan motor 5 by a partition 9 . The partition 9 is integrally formed with a hole or restriction 6 surrounding the fan 4 . The main body 1 also has an exhaust grill 7 formed on a side opposite t...

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Abstract

The invention provides a diagonal flow fan and an air conditioner equipped with the diagonal flow fan. The diagonal flow fan comprises a rotatably drive wheel hub (4B) and a plurality of blades (4A) arranged around the wheel hub (4B). Each of the blades is equipped with a leading edge (41) and a trailing edge (42). The leading edge (41) has a bending part (Lc) and a radially external linear leading edge extending radially and outwardly from the bending part (Lc) and substantially parallel to the trailing edge (42) of an adjacent blade (4A). The distance between the leading edge (41) and the trailing edge (42) of an adjacent blade (4A) is set to be greater than the wheel hub at the radial external direction. The diagonal flow fan reduces noises especially the sound caused by the rotation of the blades (4A), and improves the air supply balance of the blades (4A) so as to improve the air supply performance. Meanwhile, the productivity of the fan is increased.

Description

technical field [0001] The present invention generally relates to a diagonal flow fan installed in an outdoor unit or an indoor unit of an air conditioner, and particularly but not exclusively relates to a lightweight diagonal flow fan with improved efficiency and increased air volume. The present invention also relates to an air conditioner having such a diagonal flow fan. Background technique [0002] Figure 7 A conventional diagonal flow fan is shown, which includes a rotating shaft 13 , a hub 14 fixed on the rotating shaft 13 , and a plurality of blades 11 rigidly fixed to or integrally formed with the hub 14 on the outer periphery of the hub 14 . Each blade 11 has a curved leading edge 11a and a curved trailing edge 11b (see, for example, Japanese Patent No. 3608038). [0003] However, in this conventional oblique flow fan, if the interval between the leading edge 11a and the trailing edge 11b of the adjacent blade is not properly designed, the trailing edge vortex ge...

Claims

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Application Information

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IPC IPC(8): F04D29/38
CPCF04D29/384F05D2240/303
Inventor 酒井浩一
Owner PANASONIC CORP
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