Ventilation fan

A technology of ventilating fans and fan blades, applied in the field of ventilating fans, can solve the problems affecting the air volume, noise, static pressure, and vibration of the machine, and achieve the effect of preventing vibration.

Inactive Publication Date: 2008-10-15
PANASONIC ECOLOGY SYSTEMS GUANGDONG CO LTD
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The above structure has the following disadvantages: when the wind force changes, the opening and closing state of the opening and closing curtai

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
  • Ventilation fan
  • Ventilation fan
  • Ventilation fan

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Such as figure 2 As shown, the ventilating fan 100 of the first embodiment of the present invention includes a frame 10, a snail shell 20, a motor with fan blades 70 (not shown) is installed in the snail shell 20, and a switch is provided at the air outlet 21 of the snail shell 20 Curtain 40. The switch curtain 40 is fixed at the air outlet 21 of the snail shell 20 by a shaft 50. An iron block 60 is provided on the outside of the shaft 50 to keep the switch curtain in a closed state. On the outside of the snail shell 20, the iron block 60 rises to a horizontal position. A supporting device 90 is provided, and the electromagnet 80 is clamped in it. The supporting device 90 can prevent the electromagnet 80 from falling off due to repeated attraction.

[0020] After energization, the fan blade 70 rotates to open the curtain 40, and the shaft 50 rotates accordingly to drive the iron block 60 to rise to the position of the electromagnet 80 outside the snail shell. At this time,...

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 relates to a ventilating fan. The ventilating fan comprises a frame and a hodmadod which is provided with a motor with fan blades; a wind outlet of the hodmadod is provided with an on-off curtain which is fixed on the wind outlet of the hodmadod by a shaft; the outer side of the shaft is provided with an iron block for making the on-off curtain in a closed state; the outer side of the hodmadod is provided with an electromagnet; when the ventilating fan operates, the electromagnet attracts the iron block and keeps an open state of the on-off curtain; the ventilating fan can effectively prevent the on-off curtain from vibrating, thereby not influencing the performances of input air, noise and static pressure, etc. of the machine.

Description

technical field [0001] The invention relates to a ventilation fan. Background technique [0002] Such as figure 1 As shown, the known ventilation fan 100 includes a frame 10, a snail shell 20, a motor (not shown) with fan blades 70 is housed in the snail shell, and a switch curtain 40 is provided at the air outlet 21 of the snail shell 20, and the switch curtain 40 It is fixed at the air outlet 21 of the snail shell 20 by a shaft 50, and the outside of the shaft 50 is provided with an iron block 60 for closing the switch curtain 40. When the fan blade 70 rotated, the switch curtain 40 was blown open by the wind, and the indoor air was discharged to the outside. When the fan blade 70 stopped rotating, the switch curtain 40 was closed under the action of the iron block 60 gravity. [0003] The above structure has the following disadvantages: when the wind force changes, the opening and closing state of the opening and closing curtain will change accordingly, and vibration wi...

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): F04D25/14F04D29/42F04D27/00
Inventor 曾西泉
Owner PANASONIC ECOLOGY SYSTEMS GUANGDONG 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