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Centrifugal blower and centrifugal impeller thereof

A centrifugal fan and centrifugal technology, which is applied in the direction of mechanical equipment, non-variable pumps, non-volume pumps, etc., can solve the problems of insufficient efficiency and uneven gas, and achieve the effect of stable airflow

Inactive Publication Date: 2015-04-15
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A drawback of the current design is that the air flow to the fan is not uniform enough and the efficiency is not high enough

Method used

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  • Centrifugal blower and centrifugal impeller thereof
  • Centrifugal blower and centrifugal impeller thereof
  • Centrifugal blower and centrifugal impeller thereof

Examples

Experimental program
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Embodiment Construction

[0033] refer to figure 1 and figure 2 , the centrifugal fan 20 provided by one embodiment of the present invention includes a motor, a centrifugal impeller 23 mounted to the motor rotor shaft, a diffuser 31 mounted to the motor and between the motor and the centrifugal impeller 23, and a diffuser 31 mounted to the diffuser 31. The impeller housing 21. The impeller 23 is located in the cavity formed by the diffuser 31 and the impeller housing 21 , and the impeller housing 21 has a through hole aligned with the inlet of the impeller 23 .

[0034] In this embodiment, the motor is a general motor. The stator of the motor includes a stator core 41 , a stator winding 44 wound around the teeth of the stator core 41 , an end cover 43 attached to the stator core 41 , a carbon brush device 45 attached to the end cover 43 , and the like. In this embodiment, the diffuser 31 is also used as another end cover of the motor, and the end cover 43 is installed on both ends of the stator cor...

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PUM

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Abstract

A centrifugal impeller includes a cover, a base opposite the cover and a plurality of blades. The cover has an inlet. The plurality of blades surround the inlet and are arranged between and connect the cover and the base. Inlet edges of one end of the blades adjacent the center of the impeller define a cavity in communicate with the inlet. The dimension of the cavity gradually decreases along the direction from the cover towards the base.

Description

【Technical field】 [0001] The invention relates to a fan, in particular to a centrifugal fan and a centrifugal impeller used in the centrifugal fan. 【Background technique】 [0002] Centrifugal fans include a motor and a centrifugal impeller attached to the motor. The centrifugal impeller includes a front cover plate, a rear cover plate and several blades, which are located between the two cover plates and connected to the two cover plates. The front cover is provided with an inlet for gas to enter. The near-center ends of the blades enclose a cavity that is aligned with the inlet. [0003] When the motor rotates, the centrifugal impeller is driven, and a low-pressure area is formed at the center of the impeller (at the above-mentioned cavity), causing external gas to enter the cavity from the inlet of the impeller, and then enter the air passage formed by the blades and finally be discharged from the impeller. [0004] One drawback of the current design is that the blower ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/44
CPCF04D29/441F04D29/5806F04D17/08F04D25/06F04D29/281F04D17/164F04D29/30F05D2240/303
Inventor 郭传江方传慧薛枫刘锋潘继成潘刚宋永强
Owner JOHNSON ELECTRIC SHENZHEN