Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-wing centrifugal fan volute structure and molded line modification method thereof

A centrifugal fan and volute technology, which is applied to the multi-blade centrifugal fan volute structure and its profile modification field, can solve the problems of high energy consumption, backward design methods, high noise, etc., and achieves weakening flow separation and enhancing wind resistance performance. , the effect of increasing pressure

Active Publication Date: 2022-04-15
FOSHAN CITY SHUNDE DISTRICT XIECHUANG MOTOR MFG +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as one of the core components of gas water heaters, the fan often has the disadvantages of high energy consumption, high noise, low efficiency and small stable working range, and the backward design method is one of the reasons for this phenomenon

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-wing centrifugal fan volute structure and molded line modification method thereof
  • Multi-wing centrifugal fan volute structure and molded line modification method thereof
  • Multi-wing centrifugal fan volute structure and molded line modification method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This example is a fan of gas water heaters, outer diameter r 2 113mm.

[0051] Such as figure 1 As shown in the center of the impeller center O, the ray is the pole of the tap O and parallel to the outlet of the volute of the volute, and the point O directs the side of the volute to the sides of the volute of the volute of the ray in the direction of the rays, and the counterclockwise is rotated. The direction, the polar coordinate system is established; the position of each control point is used to represent the position of each control point, wherein the pole radius R indicates the distance from the upper point to the center of the impeller, and the polar angle θ indicates the wiring of the point and the origin. Interpretation of the angle.

[0052] The valves corresponding to the control points C, H take 60 ° and 380 °, and the respective control points D, E, F, and G pole angles are 124 °, 188 °, 252 °, and 316 °, respectively.

[0053] Assume that the expansion angle a...

Embodiment 2

[0061] The present embodiment is still a fan fan fan, and the outer diameter R2 of the impeller is 113 mm.

[0062] Such as figure 1 As shown in the center of the impeller center O, the ray is the pole of the tap O and parallel to the outlet of the volute of the volute, and the point O directs the side of the volute to the sides of the volute of the volute of the ray in the direction of the rays, and the counterclockwise is rotated. The direction, the polar coordinate system is established; the position of each control point is used to represent the position of each control point, wherein the pole radius R indicates the distance from the upper point to the center of the impeller, and the polar angle θ indicates the wiring of the point and the origin. Interpretation of the angle.

[0063] The valves corresponding to the control point C, H take 67 ° and 380 °, and the respective control points D, E, F, and G pole angle are 132 °, 194 °, 255 ° and 316 °, respectively.

[0064] Assume...

Embodiment 3

[0068] The present embodiment is still a fan fan fan, and the outer diameter R2 of the impeller is 113 mm.

[0069] Such as figure 1 As shown in the center of the impeller center O, the ray is the pole of the tap O and parallel to the outlet of the volute of the volute, and the point O directs the side of the volute to the sides of the volute of the volute of the ray in the direction of the rays, and the counterclockwise is rotated. The direction, the polar coordinate system is established; the position of each control point is used to represent the position of each control point, wherein the pole radius R indicates the distance from the upper point to the center of the impeller, and the polar angle θ indicates the wiring of the point and the origin. Interpretation of the angle.

[0070] The valves corresponding to the control points C, H take 53 ° and 375 °, and the remaining control points D, E, F, and G / poles are 124 °, 186 °, 249 ° and 310 °, respectively.

[0071] Assume th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of centrifugal fans, and discloses a multi-wing centrifugal fan volute structure and a molded line modification method thereof.The molded line of a multi-wing centrifugal fan volute is obtained by locally modifying an initial molded line, the initial molded line is provided with control points C, D, E, F, G and H, and the six control points are sequentially connected through a non-uniform rational B spline curve; under a polar coordinate system, mapping points of polar angle coordinates theta and divergence angles alpha of the six control points in an alpha-theta coordinate system are distributed along a second-order Bezier curve; the volute molded line is obtained by locally replacing an initial molded line with a new non-uniform rational B spline curve. The initial molded line is generated by controlling the distribution rule of the molded line divergence angle in the circumferential direction, and on this basis, the volute sectional area at a certain local position continues to be shrunk, so that good aerodynamic performance is achieved.

Description

Technical field [0001] The present invention belongs to the field of centrifugal fan, and more particularly to a multi-wing-centrifugal fan volute structure and a modification thereof. Background technique [0002] With the continuous improvement of living conditions, the gas water heater is a common household appliance, and people have also put forward higher requirements. However, as a fan of one of the core components of the gas water heater, there is often high energy consumption, high noise, low efficiency, and small stable operating range, where the backgated design method is one of the reasons for this phenomenon. Taking a volute as an example, the traditional design theory will simplify the problem into momentum custody, no flow loss flow, and it is to get an angular solenoid. It is clear that it is contrary to the actual flow of flow, so it is necessary to explore new volute lines Design method to improve the overall performance of the fan. Inventive content [0003] Ob...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/68
CPCF04D29/4233F04D29/681Y02E10/72
Inventor 杨进科王军王宇杰梁钟吴正李志昂蒋博彦王威
Owner FOSHAN CITY SHUNDE DISTRICT XIECHUANG MOTOR MFG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com