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Selecting method for air inlet ring of fan system

A technology of air inlet ring and fan system, which is applied to components, heating methods, and mechanical equipment of elastic fluid pumping devices, and can solve problems such as high cost, increased manufacturing difficulty, and air volume influence, and achieve vortex stability, Good uniformity and stable gas flow

Active Publication Date: 2021-11-23
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no standard or poor standardization for the actual selection of the air inlet ring. The main methods for noise reduction of range hoods are fan design optimization, volute design optimization, and adding sound-absorbing cotton resonators. , the air volume may affect the

Method used

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  • Selecting method for air inlet ring of fan system
  • Selecting method for air inlet ring of fan system
  • Selecting method for air inlet ring of fan system

Examples

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Embodiment Construction

[0022] 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.

[0023] 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 selecting method for an air inlet ring of a fan system. The fan system comprises a volute, an impeller arranged in the volute and the air inlet ring arranged at an air inlet of the volute. The air inlet ring comprises a radial flow guide part, an axial flow guide part axially extending from the radial inner side of the radial flow guide part to the inside of the volute and a net arranged on the radial inner side of the radial flow guide part, meshes are formed in the net, the inner diameter of the axial flow guide part is D1, the hole diameter of the meshes is D0, the height of the axial flow guide part is d, and the distance between the air inlet and the impeller is d1. The selecting method comprises the following steps that (1) the ranges of three parameters D1, D0 and d of the air inlet ring are limited; and 2) each parameter value is determined by adopting a control variable method: taking one parameter as a variable, changing the variable, keeping other parameters unchanged, carrying out noise test and air volume test, observing the noise condition under the condition of ensuring that the air volume is unchanged, and selecting a value corresponding to the variable when the noise is minimum as a corresponding size numerical value of the air inlet ring.

Description

technical field [0001] The invention relates to a power device, in particular to a method for selecting an air inlet ring of a fan system. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern families. The range hood uses the principle of fluid dynamics to work, sucks and exhausts the range hood through a centrifugal fan installed inside the range hood, and uses a filter to filter some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute and a motor that drives the impeller to rotate. When the impeller rotates, a negative pressure suction is generated in the center of the fan, and the oil fume under the range hood is sucked into the fan, and after being accelerated by the fan, it is collected by the volute and guided out of the room. [0003] The air volume and air pressure increase of the range hood and the noise reduction are a pair of contradictions. At present, the main func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/66F04D29/70F24C15/20
CPCF04D29/4213F04D29/667F04D29/663F04D29/703F04D29/4233F24C15/20
Inventor 刘剑峰
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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