Flue non-return valve

A check valve and flue technology, applied in the direction of control valves, valve devices, functional valve types, etc., can solve the problems of hindering the rise of smoke in the vertical flue, degrading the effect of oil fume exhaust, and affecting the smooth flow of the vertical flue

Inactive Publication Date: 2004-01-07
夏美珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current check valve includes a casing and a fume passage arranged in the casing. The two ends of the fume passage are respectively provided with an air inlet and an air outlet. The rotation axis of the valve plate at the air outlet is set in a horizontal direction. In the case of smoke exhaust, rely on the gravity of the valve plate to make the valve plate cover the air outlet, but when the valve plate is opened, the plane where the valve plate is located is in the horizontal direction, and the opened valve plate hinders the smoke flow of the longitudinal flue of the building. Air rises, especially in the case of multiple layers sharing a longitudinal flue, the valve plate opened on each layer seriously affects the smooth flow of the longitudinal flue, making the effect of exhausting oil fume worse, especially affecting the anti-return effect of oil fume

Method used

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Examples

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Embodiment Construction

[0012] See attached drawings 1 to attached Figure 4 , a flue check valve, comprising a casing 10 and a fume passage arranged in the casing 10, the two ends of the fume passage are respectively provided with an air inlet 6 and an air outlet 3, and the valve plate 2 is arranged on the said fume passage The mouth of the air outlet 3, and the valve plate 2 is rotatably connected to the housing 10 through the valve plate rotating shaft 4; the valve plate 2 has two working positions, and the first working position is that the valve plate 2 is in the Closed state, at this time the valve plate 2 covers the mouth of the air outlet 3; the second working position is that the valve plate 2 is in an open state, at this time the valve plate 2 moves to expose the air outlet 3; the valve plate 2 The plane where it is located is substantially perpendicular to the horizontal plane in the second working position, the axis line of the valve plate rotating shaft 4 intersects the horizontal plane ...

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Abstract

The present invention relates to a nonreturn valve for flue, which comprises an external shell, fume channel placed in the interior of the external shell, two ends of said fume channel are respectively equipped with air inlet air air outlet, the valve blade is placed at mouth position of air outlet, and the described valve blade can be turnably connected with the external shell by means of valve blade rotating shaft. It is characterized by that when the valve blade is opened, said valve blade is perpendicular to the horizontal surface, so that the resistance of valve blade to longitudinal flue channel can be smallest, and can make flue channel smooth and unimpeded.

Description

technical field [0001] The invention relates to a flue check valve used in kitchens. Background technique [0002] In the prior art, the cooking fume in the kitchen is exhausted into the flue check valve through the range hood, and then discharged into the longitudinal flue in the building through the flue check valve. The current check valve includes a casing and a fume passage arranged in the casing. The two ends of the fume passage are respectively provided with an air inlet and an air outlet. The rotation axis of the valve plate at the air outlet is set in a horizontal direction. In the case of smoke exhaust, rely on the gravity of the valve plate to make the valve plate cover the air outlet, but when the valve plate is opened, the plane where the valve plate is located is in the horizontal direction, and the opened valve plate hinders the smoke flow of the longitudinal flue of the building. Air rises, especially in the case of multiple lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K15/03
Inventor 沈惠贤
Owner 夏美珍
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