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Volute assembly for high speed electric direct drive centrifugal fan

A centrifugal fan and electric direct drive technology, which is applied to electric components, components of pumping devices for elastic fluids, electrical components, etc. The effect of improving the manufacturability, enhancing the stability

Active Publication Date: 2019-03-01
NANJING CIGU TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Part of the heat energy of the volute is continuously transmitted to the motor casing through the contact part with the motor casing, causing the temperature of the motor to continue to rise, which is not conducive to the stable operation of the motor

Method used

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  • Volute assembly for high speed electric direct drive centrifugal fan
  • Volute assembly for high speed electric direct drive centrifugal fan
  • Volute assembly for high speed electric direct drive centrifugal fan

Examples

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Such as Figure 1 to Figure 4 , the present invention is a volute assembly for a high-speed electric direct-drive centrifugal fan, comprising a volute 1 and a motor case 2, the volute 1 is provided with an air inlet 13 and an air exhaust port 14, and the bottom surface of the volute 1 It is a planar structure, and the upper port of the motor casing 2 extends outwards to form a platform-like installation plane 20 , and the bottom surface of the volute 1 and the installation plane 20 of the motor casing 2 are fixedly connected by bolts.

[0014] A number of waist-shaped grooves 11 are arranged on the bottom surface of the volute 1, and the waist-shaped grooves 11 are arranged along the circumferential direction of the air inlet 13, and a circular protrusion 25 is arranged on the installation plane 20 of the motor case 2. The raised part 25 is arranged coaxially w...

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Abstract

The invention discloses a volute assembly for a high speed electric direct drive centrifugal fan. The bottom side of a volute is provided with a plurality of kidney-shaped grooves, the kidney-shaped grooves are arranged along the circumferential direction of an air inlet, a round shape protrusion is arranged on the installation platform, the protrusion and a motor casing are coaxially set, the protrusion divides the installation platform into an inward concave part and an outward concave part, a plurality of fixed bosses are evenly arranged on the outer concave part, and a heat dissipating groove is formed between every two adjacent fixed bosses. After the volute fixedly connects to the motor casing, each kidney-shaped groove achieves communication of the concave parts and the corresponding heat dissipating groove. The volute assembly for the high speed electric direct drive centrifugal fan reduces the contact area between the volute and the motor casing, thereby reducing the heat transferred directly from the volute to the motor casing and improving the stability of the operation of a motor. The volute assembly for the high speed electric direct drive centrifugal fan increases theuniformity of the volute wall thickness distribution and improves the manufacturability of volute casting.

Description

Technical field: [0001] The invention relates to a volute assembly for a high-speed electric direct-drive centrifugal fan. Background technique: [0002] The high-speed electric direct-drive centrifugal fan is limited by the length of the motor rotor, and its volute and motor casing are mostly connected by bolts. When the fan is running, the high-temperature and high-pressure gas is collected by the volute and then discharged from the exhaust port. Part of the heat energy of the volute is continuously transmitted to the motor casing through the contact part with the motor casing, causing the temperature of the motor to continue to rise, which is not conducive to the stable operation of the motor. Invention content: [0003] The present invention provides a volute assembly for a high-speed electric direct-drive centrifugal fan in order to solve the above-mentioned problems in the prior art. [0004] The technical solutions adopted in the present invention include: a volute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/58F04D29/62H02K5/04
CPCH02K5/04F04D29/4226F04D29/584F04D29/626
Inventor 余知义吴立华董继勇
Owner NANJING CIGU TECH CORP LTD
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