Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A hood for a range hood

A technology for range hoods and air outlet hoods, which is applied in the direction of removing oil fumes, applications, and household stoves. It can solve the problems of air injection and mixing, and the air outlet of the fan has no effect, so as to change the characteristics of the flow field and reduce noise. effect, the effect of increasing the mixing area

Active Publication Date: 2018-05-29
NINGBO FOTILE KITCHEN WARE CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the head of the existing air outlet hood does not have any through holes on its straight wall, when the range hood is in operation, the air flow around the air outlet hood cannot be ejected and absorbed by the surrounding air when the range hood is in operation. In this way, the air outlet hood mainly plays the role of guiding the airflow out, but basically has no effect on reducing the noise of the fan outlet

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
  • A hood for a range hood
  • A hood for a range hood
  • A hood for a range hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 with figure 2 As shown, the air outlet hood for range hood in this embodiment includes a cover bottom 1 and a cover head 2, the cover bottom 1 is the air inlet end, the cover head 2 is the air outlet end, and the cover head The edge of the air outlet of 2 has a sawtooth structure, and the number of teeth of the sawtooth 21 can be set to 4-20.

[0018] In this embodiment, the tip of the sawtooth 21 is pointed, and a V-shaped notch with a sharp angle is formed between two adjacent teeth of the sawtooth 21 . The cover head 2 gradually gathers from the bottom to the opening, and the angle α between the busbar of the cover head 2 and the central axis of the cover head 2 is 2°≤α≤20°, and the preferred value of α is The value is α=5°

[0019] In addition, the numerical relationship between the radius a of the circle where the tooth tip of the sawtooth 21 is located and the radius b of the circle where the bottom line of the tooth profile of the sawtooth 21...

Embodiment 2

[0020] Embodiment two: if image 3 As shown, in this embodiment, the tips of the serrations 21 on the air outlet cover are arc-shaped, and the roots of two adjacent teeth of the serrations 21 are in a smooth transition. The rest of the structure of the air outlet hood in this embodiment is the same as that in Embodiment 1, and will not be described here.

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 an outlet housing for a range hood. The outlet housing comprises a housing body bottom and a housing body head, wherein the housing body bottom is an inlet end and the housing body head is an outlet end. The outlet housing is characterized in that the edge of an air outlet of the housing body head is of a saw-tooth structure. Compared with the prior art, the outlet housing for the range hood has the advantages that the edge of the air outlet of the housing body head forms the saw-tooth structure, and during work, with existence of the saw-tooth structure, certain vortexes are produced, strong shear force is formed at tips of teeth and the vortexes are induced to enter a shearing layer, so that the mixing area is enlarged, characteristics of a flow field are changed, exchange with energy and momentum in an ambient environment is strengthened, and a better noise reduction effect is achieved; moreover, analysis on a noise spectrogram of the range hood shows that the outlet housing of the saw-tooth structure have a certain noise reduction capability in whole frequency bands.

Description

technical field [0001] The invention relates to an air outlet cover for a range hood. Background technique [0002] At present, the air outlet of the range hood is generally equipped with an air outlet cover. The existing air outlet cover generally includes a cover bottom and a cover head. The bottom of the cover is installed on the fan outlet of the range hood. That is, the bottom of the cover body is the air inlet end, and the head of the cover body is the air outlet end, and the airflow flowing out from the air outlet of the fan flows out through the air outlet cover. However, since the head of the existing air outlet hood does not have any through holes on its straight wall, when the range hood is in operation, the air flow around the air outlet hood cannot be ejected and absorbed by the surrounding air when the range hood is in operation. In this way, the air outlet cover mainly plays the role of guiding the airflow out, but basically has no effect on reducing the nois...

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 Patents(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 梁雪斐刘逸茅忠群诸永定刘戈
Owner NINGBO FOTILE KITCHEN WARE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com