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Air supply device

A technology of air supply device and cylindrical part, which is applied in the direction of pump device, electromechanical device, pumping device for elastic fluid, etc., and can solve the problems of air volume characteristic reduction and blade damage of air supply device

Active Publication Date: 2021-06-15
JAPAN SERVO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the flow of air around the impeller cup changes, and the air volume characteristics of the air blower may decrease.
In addition, the blades of the impeller may come into contact with the housing surrounding the impeller, resulting in damage to the blades

Method used

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  • Air supply device
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ＞

[0021] like figure 1 As shown, the air blower 10 of this embodiment has a motor support portion 40, a motor 30, an impeller 20, a circuit board 80, and a housing 50, wherein the motor 30 has a motor 30 arranged along a central axis J extending in the vertical direction. Axis 31. In the following description, the direction parallel to the central axis J, that is, the up-and-down direction is simply referred to as "axial direction Z". In addition, the radial direction centered on the central axis J is simply referred to as "radial direction", and the circumferential direction centered on the central axis J is simply referred to as "circumferential direction".

[0022] The motor support portion 40 supports the motor 30 . The motor support portion 40 has a bottom plate portion 42 and a stator support portion 41 . The bottom plate portion 42 has an annular plate shape centered on the central axis J. As shown in FIG. The stator support portion 41 has a cylindrical shape extendin...

no. 2 Embodiment approach ＞

[0058] like Figure 7 and Figure 8 As shown, in the air blower 110 of this embodiment, the cover part 132a of the rotor cup 132 has the 2nd hole part 132i recessed downward from the upper surface of the cover part 132a. The second hole portion 132i is located on the radially outer edge portion of the cover portion 132a. The second hole portion 132i penetrates the cover portion 132a in the axial direction Z. The second hole portion 132i spans from the radially outer edge portion of the cover portion 132a to the upper end portion of the first cylindrical portion 32b. In this embodiment, the rotor cup 132 has, for example, a plurality of second hole portions 132i. The plurality of second hole portions 132i are arranged at regular intervals over the entire circumference along the circumferential direction. The number of the second hole portions 132i is, for example, ten.

[0059] like Figure 8 and Figure 9 As shown, the flange part 132c has the flange part main body 137a a...

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PUM

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Abstract

An air blower according to one aspect of the present invention has a motor and an impeller. The motor has a rotor cup having a cylindrical shape and a first cylindrical portion that holds a rotor magnet. The impeller has: an impeller cup having a cylindrical second cylindrical portion surrounding the first cylindrical portion on a radially outer side of the rotor cup; and a plurality of blade portions located on a radially outer surface of the second cylindrical portion . The rotor cup has a flange protruding radially outward from a lower portion of the first cylindrical portion. One of the flange portion and the impeller cup has a first hole portion recessed in the axial direction. The other of the flange portion and the impeller cup has a first convex portion at least partially located in the first hole portion.

Description

technical field [0001] The present invention relates to a blower device. This application claims priority based on U.S. Patent Application No. 62 / 354190 filed on June 24, 2016, and its content is hereby cited. Background technique [0002] There is known an air blower in which an impeller is attached to a rotor cup holding a rotor magnet. For example, Japanese Unexamined Patent Publication No. 2002-5093 describes an air blower having an impeller and a motor yoke as a rotor cup as an air blower. [0003] In a conventional air blower, when the rotor cup and the impeller are rotated at high speed, the impeller cup of the impeller attached to the rotor cup may deform in the radial direction due to centrifugal force or the like. Therefore, the flow of the air around the impeller cup changes, and the air volume characteristics of the air blower may decrease. In addition, the blade portion of the impeller may come into contact with a housing surrounding the impeller, resulting i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/32F04D25/06H02K21/22
CPCF04D25/064F04D29/023F04D29/329F05D2260/36H02K7/14H02K1/2791H02K21/22F04D25/06F04D25/08F04D29/325F04D29/522
Inventor 番场高大旦野太郎加藤义彦
Owner JAPAN SERVO CO LTD