A non-return device for exhaust duct

A technology of non-return device and flue exhaust channel, which is applied in the field of oil fume exhaust devices, can solve the problems affecting the normal upward smoke exhaust of public smoke exhaust channels, blockage of public oil fume exhaust channels, etc., so as to improve the effect of smoke exhaust, improve the effect of non-return, The effect of unobstructed smoke exhaust channel

Inactive Publication Date: 2015-12-09
唐儒炳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing non-return devices (valves) used in conjunction with the oil fume exhaust device are mostly designed in the public flue. The channel causes a certain blockage, which affects the normal upward smoke exhaust of the entire public smoke exhaust channel

Method used

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  • A non-return device for exhaust duct
  • A non-return device for exhaust duct
  • A non-return device for exhaust duct

Examples

Experimental program
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Embodiment Construction

[0016] The present invention will be further described by embodiment now in conjunction with accompanying drawing. Such as Figure 1-3 As shown, the flue exhaust check device of this embodiment includes a discharge channel 1 with a square cross-sectional shape, which is formed by a piece of magnetically conductive material that is movably connected to the discharge channel 1 from the side of the discharge channel 1 through the connecting device. Non-return piece 4; the inlet side of the discharge channel 1 is connected with a coupling channel (pipe) 12 protruding (extending) toward the discharge channel or the direction of the exhaust channel corresponding to the non-return piece 4, the coupling channel (pipe) 12 (or its outlet) diameter or effective flow channel area is smaller than the corresponding diameter or effective working area of ​​the non-return sheet 4 and the discharge channel 1, so that the non-return sheet 4 can completely cover the outlet of the coupling channel...

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PUM

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Abstract

The invention discloses a discharge flue non-return device which is simple in structure, is convenient to install, has great non-return sheet stroke, forms low resistance by a non-return sheet in a discharge flue, and can obtain great and effective smoke discharge area. The discharge flue non-return device comprises a discharge flue and the non-return sheet arranged in the discharge flue, wherein the inlet side of the discharge flue is provided with a coupling path which corresponds to the non-return sheet, protrudes toward the interior of the discharge flue, has the radial size less than the corresponding radial size of the non-return sheet and/ or the discharge flue; the outlet of the coupling path forms the input inlet of the discharge flue; and the port surface of the outlet of the coupling path is a plane or an oblique surface relative to the radial direction.

Description

technical field [0001] The invention relates to an oil fume exhaust device, in particular to a non-return device for an exhaust flue. Background technique [0002] With the continuous advancement of industrial technology, the range hood as a kitchen appliance is getting better and better in terms of structural composition, working performance, and fume exhaust effect, but no matter how good the range hood is, if the corresponding flue discharge channel exists If there is a problem, the kitchen or indoor environment will still be affected to varying degrees, so it is necessary to use a flue check device with a relatively more reasonable structure and a relatively better use effect. The existing non-return devices (valves) used in conjunction with the oil fume exhaust device are mostly designed in the public flue. The channel causes a certain blockage, which affects the normal upward smoke exhaust of the entire public smoke exhaust channel. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
Inventor 唐儒炳
Owner 唐儒炳
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