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Fan and outdoor unit equipped with the fan

A fan and peripheral side technology, applied in the fan field of outdoor units, can solve problems such as deformation and damage of moving or static blades, prevent ice generation and growth, prevent deformation or damage, and improve aerodynamic performance Effect

Inactive Publication Date: 2018-10-16
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, depending on the position and shape of the static vane, when the stationary vane and the blowing grid are strongly pressed toward the moving vane side, the stationary vanes such as the static pressure recovery vane 107 of the static vane come into contact with the moving vane, It is possible to deform or damage the moving or stationary fins

Method used

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  • Fan and outdoor unit equipped with the fan
  • Fan and outdoor unit equipped with the fan
  • Fan and outdoor unit equipped with the fan

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0050] figure 1 It is a meridian cross-sectional view of the fan according to the first embodiment of the present invention. Here, the meridional cross-sectional view is a section in which the rotating blade 4 of the moving blade 5 and the fixed blade 7 of the stationary blade 8 are projected onto a plane including the rotating shaft 2 of the moving blade 5 or the central axis of the static blade 8 picture. in addition, figure 2 It is a front view seen from the discharge side of the fan of this embodiment.

[0051] Such as figure 1 , figure 2 As shown, the fan 1 includes a moving blade 5 including: a rotating hub 3 installed on a rotating shaft 2 ; and two rotating blades 4 arranged around the rotating hub 3 . On the discharge side (downstream side) of the moving vane 5, a stationary vane 8 is provided, and the stationary vane 8 includes: a fixed hub 6 coaxial with the rotating hub 3; Fixed blade 7. In addition, a mouth 9 is provided at the positions of the discharg...

no. 2 Embodiment approach

[0106] Figure 8 It is a meridional cross-sectional view of another fan according to the second embodiment of the present invention. Figure 9 It is a front view seen from the discharge side of another blower according to the second embodiment of the present invention. In addition, in this embodiment, the same code|symbol is attached|subjected to the same component as 1st Embodiment of this invention, and description is abbreviate|omitted.

[0107] Hereinafter, only the differences between this embodiment and the first embodiment of the present invention will be described. Such as Figure 8 As shown, in this embodiment, the extension front edge 12b side of the extension 12 and Figure 6 The shown front portion 21 a is substantially parallel, while the extended portion rear edge 12 a side is inclined so as to approach the front portion 21 a side as it goes toward the outer peripheral side of the stationary blade 17 . Therefore, the meridional cross-sectional height of the e...

no. 3 Embodiment approach

[0114] Hereinafter, a fan according to a third embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited by these embodiment.

[0115] In the description of this embodiment, the same reference numerals are assigned to the same components as those in the first embodiment of the present invention or the second embodiment of the present invention, and description thereof will be omitted.

[0116] Hereinafter, only the differences between the present embodiment, the first embodiment of the present invention, and the second embodiment of the present invention will be described.

[0117] Such as Figure 10 As shown, the front edge 7c of the stationary vane 7 is configured to be upstream of the trailing edge 7d of the stationary vane 7 . Therefore, when the fan 1 is viewed from the discharge side, the front edge 7c of the fixed blade 7 is located above the rear edge 7d in the region on the right side compared to...

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PUM

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Abstract

In the present invention, the following are provided: a rotor vane (5) having a rotating hub (3) that has a rotating axle (2), and a plurality of rotating blades (4) provided around the rotating hub (3); and a stator vane (8) provided on the discharge side of the rotor vane (5) and having a fixed hub (6) and a plurality of fixed blades (7) provided around the fixed hub (6). Also, to match the outflow of air from the rotor vane (5) where a main flow of air concentrates in the area outside of the center of the rotating blades (4), the fixed blades (7) have a larger attachment angle outside a central portion in the radial direction of the fixed blades (7), as compared to the attachment angle of the fixed blades (7) towards the fixed hub (6) relative to the central portion of the fixed blades (7).

Description

technical field [0001] The present invention relates to a fan, in particular to a fan installed in an outdoor unit of a refrigeration device such as an air conditioner and a heat pump water heater. Background technique [0002] In recent years, in refrigerating apparatuses such as air conditioners, energy saving is rapidly progressing as a measure against global warming, and it is necessary to reduce the input power of the equipment. In addition, it is required to improve the heating comfort of the air conditioner, so it is necessary to further improve the performance of the heat exchanger of the outdoor unit and reduce the noise and increase the wind volume of the fan installed in the outdoor unit. [0003] In the prior art, in the fan of the outdoor unit, an axial flow or a diagonal flow fan is used from the viewpoint of low noise and large wind. However, as an outdoor unit, it is required to further improve the air supply of the fan while maintaining low noise. performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/54F24F1/38
CPCF04D19/002F04D29/544F24F1/38F24F1/50
Inventor 木田琢己杉尾孝石曾根司盐谷优
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD