Variable cross-section flow rectifier for square column wall surface attached type uniform air feeding

A technology with variable cross-section and wall surface, which can be used in heating methods, applications, and household heating, etc., and can solve problems such as inapplicability to large-space buildings and application limitations.

Active Publication Date: 2015-09-23
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to propose a square column wall-attached uniform air supply variable cross-section flow equalizer to form a ventilation mode based on the square column wall attachment, to solve The problems existing in the above-mentioned prior art are restricted by application and not suitable for large-space buildings

Method used

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  • Variable cross-section flow rectifier for square column wall surface attached type uniform air feeding
  • Variable cross-section flow rectifier for square column wall surface attached type uniform air feeding
  • Variable cross-section flow rectifier for square column wall surface attached type uniform air feeding

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Effect test

Embodiment 1

[0047] According to the actual use, the experimental model of the equal cross-section flow equalization device is established, such as Figure 8 As shown, taking a square column with a side length of 1000 mm as the application object, the height of each wedge-shaped section of the variable-section air inlet duct 3 is 600 mm, and the variable-section air inlet duct 3 is divided into six symmetrical wedge-shaped regions along the central axis of the air inlet: Wherein, the length of the first wedge-shaped area 31 and the fourth wedge-shaped area 34 is 600mm (300+(1000-400) / 2), the entrance width is 500mm, and the end width is 300mm; the second wedge-shaped area 32 and the fifth The length of the wedge-shaped area 35 is 1400mm (300+1000+100), the entrance width is 300mm, and the end width is 100mm; the length of the third wedge-shaped area 33 and the sixth wedge-shaped area 36 is 600mm (100+1000 / 2 ), the inlet width is 100mm, and the end width is 50mm; the angles of the first, se...

Embodiment 2

[0054] When the design air supply speed is 1.5m / s, when using the flow equalizing device of the present invention, the speed at the 20 measuring points on the central axis of the return-shaped tuyere is basically the same, distributed in the range of 1.42-1.78m / s, and the maximum difference from the design speed 18.7%, the average deviation is 11.8%, and the air supply performance meets the actual requirements; when the traditional hollow shell static pressure box device is used, the speed difference at the 20 measuring points on the central axis of the return-shaped tuyere is relatively large , distributed in the range of 1.06-3.18m / s, the maximum difference from the design speed is 112.0%, and the average deviation is 29.9%. Therefore, in terms of the design accuracy of the air outlet, when the design air supply speed is 1.5m / s, the average deviation between the actual air outlet speed and the design air speed is reduced from 29.9% to 11.8%, and the accuracy is improved by 15...

Embodiment 3

[0057]When the design air supply speed is 2.0m / s, when the flow equalization device of the present invention is used, the speed at the 20 measuring points on the central axis of the return-shaped tuyere is basically the same, distributed in the range of 1.90-2.27m / s, and the maximum difference from the design speed 13.5%, the average deviation is 8.1%, and the air supply performance meets the actual requirements; when the traditional hollow shell static pressure box device is used, the speed difference at the 20 measuring points on the central axis of the return-shaped tuyere is relatively large , distributed in the range of 1.26-3.94m / s, the maximum difference from the design speed is 97.0%, and the average deviation is 31.4%. Therefore, in terms of the design air outlet accuracy, when the design air supply speed is 2.0m / s, the average deviation between the actual air outlet speed and the design air speed is reduced from 31.2% to 8.1%, and the accuracy is improved by 287.7% %...

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Abstract

The invention discloses a variable cross-section flow rectifier for square column wall surface attached type uniform air feeding. The variable cross-section flow rectifier for square column wall surface attached type uniform air feeding comprises an air inlet pipe and a shell, and further comprises a variable cross-section air feeding passage. The shell is a concentric-square-shaped barrel with a sealed upper end, and the lengths of the four sides of the barrel are the same. A square column is sleeved with the shell and the inner wall of the inner barrel of the shell is closely attached to the outer wall of the square column. The air inlet pipe is installed at the upper end of the variable cross-section air feeding passage and communicated with the variable cross-section air feeding passage. The axis of the air inlet pipe and the axis of the shell perpendicularly intersect. The variable cross-section air feeding passage is barrel-shaped and located in the upper half of the shell, and the lower end port of the variable cross-section air feeding passage is communicated with the shell. The variable cross-section flow rectifier for square column wall surface attached type uniform air feeding can improve the indoor air quality of buildings and hot comfort and health of people, and is applicable to a building ventilation air-conditioning system which comprises a square column structure and realizes attached air feeding through a concentric-square-shaped seam air port.

Description

technical field [0001] The invention relates to a uniform air supply device with variable cross-section, in particular to a flow equalization device applied to the wall surface of a square column, which is suitable for ventilation and air conditioning in special building spaces such as civil and industrial buildings, subways, and hydropower stations. system. Background technique [0002] Under the premise of a certain initial momentum at the air outlet, the attached jet air supply mode can send the treated air to a farther area, expanding the range of action of the air supply in the building space. At the same time, existing studies have also shown that the attached jet can effectively reduce the "drying feeling" caused by direct air supply to the personnel in the work area. Therefore, the attached jet ventilation mode has been widely used in building ventilation and air conditioning systems. [0003] At present, roof-attached jets in mixed ventilation mode are widely used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F7/06F24F13/08F24F13/24
CPCF24F7/06F24F13/08F24F13/24F24F2013/242
Inventor 尹海国李安桂刘志永孙翼翔王瑞乐
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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