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Pressure variable exhausting channel

An exhaust duct, variable pressure technology, applied in vertical pipes, building components, buildings, etc., can solve the problems of complex design and calculation of the weight position, flue gas back into the room, and gas flow rate drop.

Inactive Publication Date: 2005-01-19
北京正能远传节能技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device, because the jet tube can prevent part of the smoke from the lower layer from entering the air inlet of the upper layer, but because the design and calculation of the position of the counterweight is complicated, and because the smoke from the lower layer is discharged upward to the jet tube of the upper layer, Due to the increase of the cross-sectional area of ​​the main pipe, the gas flow rate decreases, so the phenomenon that the flue gas enters the room through the opening of the jet pipe also occurs.

Method used

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  • Pressure variable exhausting channel
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment one, see figure 1 , the figure shows a variable pressure exhaust channel, including a main pipe 1, a variable pressure plate 2, a guide pipe 3 and a diversion check exhaust valve 4; the guide pipe 3 is in the shape of a dustpan, and the opening is upward The flange 31 turned inward is fixed on the inner wall of the main pipe 1 and surrounds the air inlet 11 of the main pipe 1; Above; the diversion type check exhaust valve 4 is arranged at the air inlet 11 of the main pipeline 1; the diversion type check exhaust valve 4 includes a diversion valve housing 41 and a valve plate 43, the The diversion valve housing 41 is tubular and passes through the air inlet 11. The diversion valve housing 41 is fixed on the wall outside the air inlet 11 of the main pipeline 1 by a flange 411. The diversion valve housing 41 The outlet end face 412 is inclined, and the apex 413 of the outlet end face 412 is substantially flush with the inner wall of the main pipe 1, and its lowe...

Embodiment 2

[0032] Embodiment two, see figure 2 , the figure shows a pressure-variable exhaust channel, which is based on the first embodiment, and a one-way exhaust valve is added, that is, the outside of the air inlet 11 of the main pipeline 1 is further set There is a one-way exhaust valve 6, which includes a one-way valve housing 61 connected to the air inlet 11 of the main pipeline 1 and the diversion valve housing 41, fixed on the one-way valve housing The valve plate frame 62 and the valve plate 63 in the valve plate 61, the rotating shaft 631 at the top of the valve plate 63 is rotatably arranged in the installation hole 621 inside the valve plate frame 62; the one-way valve housing 61 is tubular , the one-way valve housing 61 and the main pipeline 1 are fixed on the wall outside the air inlet of the main pipeline 1 through the flange 611 . And the limiting device 5 in the first embodiment is in this embodiment figure 2 A stop protrusion 5' provided on the inner wall of the gu...

Embodiment 3

[0035] Embodiment 3, this embodiment is based on Embodiment 1, and the diversion check exhaust valve 4 is replaced by a composite one-way exhaust valve 10, see image 3 , the figure shows the structure of the composite one-way exhaust valve 10, that is, the combined structure of the diversion check exhaust valve 4 and the one-way exhaust valve 6, the one-way valve housing 61 and The diversion valve housing 41 is integrally formed to form a composite housing 101 , and a flange 102 fixed on the outer wall of the air inlet 11 of the main pipeline 1 is provided at the waist. Another point of difference from Embodiment 1 is: the limiting device 5 is a limiting protrusion 5’’ located at the bottom of the diversion valve housing 41 and the outer surface of the valve plate 43; and in the composite housing The inlet end of 101 is further provided with a circular interface 7 connected with the exhaust pipe of the exhaust fan. This composite one-way exhaust valve will obtain a better se...

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PUM

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Abstract

The variable-pressure exhaust duct mainly includes main duct, pressure-changing plate, guide pipe and flow-inducing non-return exhaust valve, the described guide pipe is made into the form of dustpan, its opening is upwards, and is placed in the main duct. The described flow-inducing nno-relurn exhaust valve is placed at inlet of main duct, and includes shell body and valve blade, said shell body is made into the tubular form, and fixed at inlet of main duct, the outlet end of said shell body is made into the oblique surface form, and the lower end of valve blade can be turnably is placed on the top end of shell body bottom portion, and on the external side surface of valve blade or on the internal side wall of guide pipe a spacing device capable of making opening angle beta of valve blade be less than 90 deg. is mounted.

Description

technical field [0001] The invention relates to an exhaust duct, in particular to a pressure-variable exhaust duct for effectively preventing exhaust ducts from crossing each other and smoke used in various residences. Background technique [0002] Now all kinds of residences use a common exhaust duct, and each household exhausts the indoor flue gas into the main duct through the air inlet on the main duct, and discharges it from the outlet of the roof. During the exhaust process, it will enter the room from the air intake of the upper-level residents. When the wind is strong, the smoke exhausted by the upper-level residents will also return to the indoors of the lower-level residents. Over the years, those skilled in the art have been looking for various solutions, for example: a utility model patent ZL94200748.4 of the inventor discloses a kind of high-rise building shared exhaust pipe anti-gas crossing device, which consists of The wall of the main pipeline consists of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04F17/02E04F17/04
Inventor 林润泉
Owner 北京正能远传节能技术研究院有限公司