Volute molded line generation method, volute, fan system and extractor hood

A fan system and volute technology, applied in the field of power system, can solve the problems of affecting the outlet size, poor aerodynamic performance and noise performance, affecting the height, etc.

Active Publication Date: 2020-08-11
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned traditional design methods assume that the flow parameters on the inlet circumference are uniformly distributed and the air flow moment in the volute is constant. The aerodynamic performance and noise performance of the fan system using this design idea on the range hood are not good; in addition, the volute The dimensions on the molding line are

Method used

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  • Volute molded line generation method, volute, fan system and extractor hood
  • Volute molded line generation method, volute, fan system and extractor hood
  • Volute molded line generation method, volute, fan system and extractor hood

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0031] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element must have a particular orientation, be constructed, and operate in a particular orientatio...

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Abstract

The invention discloses a volute molded line generation method which comprises the following steps: 1) determining at least three positioning points with characteristic meaning of a circle center, wherein the characteristic meaning is volute throat gap positioning, volute height or volute width; 2) taking the circle center as the original point, and determining a volute molded line in a curve fitting way according to coordinates of each positioning point; 3) after determining each positioning point, reversely deducing a coefficient m of Archimedes or log spiral, and fitting a curve graph withrespect to m-Phi by a smooth curve through an m value corresponding to each positioning point, wherein Phi is an included angle formed by the point and a starting radial section of the volute; 4) calculating to obtain values under different values through an Archimedes or log spiral formula: FORMULA, thereby obtaining a corresponding corrected volute molded line. The invention further discloses avolute generated by the method, a fan system applying the volute, and an extractor hood applying the fan system.

Description

technical field [0001] The invention relates to a power system, in particular to a method for generating a volute, a volute obtained by the method, a fan system using the volute, and a range hood using the fan system. Background technique [0002] A centrifugal fan is generally composed of a volute, a motor, and an impeller. The working principle of the centrifugal fan is that the motor drives the impeller to rotate to do work on the air flow, and it is discharged radially through the diffusion effect of the volute. [0003] The volute and volute profile of the existing centrifugal fans are usually designed using conventional logarithmic spirals and Archimedes spirals. For example, the Chinese patent application number 201510135345.2 discloses a volute of a range hood, including a volute front plate, a volute rear plate, a volute flange, and a volute coaming plate connecting the volute front plate and the volute rear plate , the volute coaming connects the volute front pla...

Claims

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Application Information

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IPC IPC(8): F04D29/42F04D29/66F04D25/06F24C15/20
CPCF04D25/06F04D29/422F04D29/4233F04D29/663F04D29/667F24C15/20
Inventor 吴灵辉
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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