Silent range hood

A range hood, mute technology, applied in the field of range hoods, can solve problems such as loud noise, and achieve the effect of smooth airflow and accelerated airflow rise

Inactive Publication Date: 2014-04-02
NINGBO FOTILE KITCHEN WARE CO LTD
View PDF7 Cites 62 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the formation of two oil fume channels, the oil fume enters the fan from the front and rear air inlets, and the noise of the range hood mainly comes...

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
  • Silent range hood
  • Silent range hood
  • Silent range hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] See Figure 1-Figure 3 , A silent type range hood, comprising a casing 1 and a fume collecting hood 2. The casing 1 includes a casing front cover 11 and a casing rear cover 12. The casing 1 is provided with a volute 3 and a volute 3 An impeller 4 and a motor 5 for driving the impeller 4 are provided inside.

[0035] The volute 3 has a forward air inlet 31 and a rear air inlet 32. The housing front cover 11 of the housing 1 is opposite to the forward air inlet 31, and the sound-absorbing shroud 13 facing the forward air outlet 31 is fixed on the inner side of the front cover 11 of the housing. See Figure 4-Figure 5 , The sound-absorbing shroud 13 includes a rear panel 131 that is arranged obliquely opposite to the forward air outlet 31, and the distance between it and the front cover 11 of the casing is gradually reduced from top to bottom. Both sides of the rear panel 131 and the front cover of the casing There are end faces 132 between the plates 11, the width of the end...

Embodiment 2

[0044] See Figure 10-Figure 12 In this embodiment, the difference from the first embodiment is that the wind deflector 6 is only provided with second micro-holes 64 on the rear flat plate 62, and only the second sound-absorbing plate 62 is provided on the inner wall of the rear flat plate 62. The shape of the cotton 65 and the second sound-absorbing cotton 65 is consistent with the shape of the cavity formed from the inner wall of the rear flat panel 62 to the upper part of the arc panel 63.

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 discloses a silent range hood comprising a machine enclosure and an exhaust fume collecting hood with an air inlet, wherein a spiral casing is arranged in the machine enclosure and is provided with a front air inlet and a back air inlet. The silent range hood is characterized in that a sound absorption flow guide hood is arranged on a front cover plate of the machine enclosure and is just opposite to the front air inlet of the spiral casing, a closed cavity is formed between the sound absorption flow guide hood and the front cover plate of the machine enclosure, a plurality of first micro-pores communicated with the closed cavity are formed in a back panel, opposite to the front air inlet, of the sound absorption flow guide hood, and the closed cavity is filled with first sound absorbing cotton. According to the invention, the sound absorption flow guide hood is just opposite to the front air inlet of the spiral casing and is provided with the micro-pores and the closed cavity is filled with the sound absorbing cotton, so that most of low-frequency, medium-frequency and high-frequency noise radiated outwards from the front air inlet can be absorbed; by reasonable selections of the aperture and the center distance of the micro-pores and the filling area of the sound absorbing cotton, the sound absorbing effect can be further strengthened.

Description

Technical field [0001] The invention relates to a range hood, in particular to a silent type range hood. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern households. Generally, range hoods include top-suction and side-suction types, while top-suction range hoods are clean, lightweight, and occupy a small space. Has more and more widespread applications. A top-suction range hood usually includes a fume collection hood, a fan housing located on the fume collection hood, and a volute, an impeller, and a motor that drives the impeller are installed in the fan housing. [0003] The air inlet of this type of range hood is located on the side of the volute, that is, the air inlet is on one side, the air inlet area is small, and the amount of oil smoke is not ideal. For this reason, some range hoods with air intake on both sides have also been disclosed. For example, the applicant’s Chinese patent application with application num...

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
IPC IPC(8): F24C15/20
Inventor 董一龙梁之博任树栋胡承杰李斌茅忠群诸永定
Owner NINGBO FOTILE KITCHEN WARE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap