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Annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply

A technology with equal cross-section and circular shape, which is applied in the direction of pipeline layout, etc., can solve the problems of application limitations and inapplicability to large-space buildings, and achieve the effects of improving effectiveness, improving the uniformity of air outlet, and improving the uniformity

Active Publication Date: 2015-10-21
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 object of the present invention is to propose a cylindrical wall surface-attached annular equal-section flow equalizer for air supply to form a ventilation mode based on cylindrical wall surface attachment to solve the above-mentioned problems. There are problems in the technology that are limited by application and not suitable for large space buildings

Method used

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  • Annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply
  • Annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply
  • Annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply

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Effect test

Embodiment 1

[0047] According to the actual use, the experimental model of the annular equal-section flow equalization device is established, and the cylinder with a diameter of 1000mm is used as the application object. The diameter of the shell 3 is 1700mm, and the total height is 1080mm (the height of the uppermost annular air duct is 300mm, and 6 annular partitions 9 The heights of the 5 separated flow areas are all 100mm, the height of the flow equalization area between the annular orifice plate 8 and the adjacent annular partition plate 9 is 100mm, the height of the air outlet area is 100mm, and the height of the diversion section is 80mm, a total of 1080mm); The width of the upper annular partition is 200mm, and it is installed horizontally along the bottom surface of the annular air duct of the flow equalization device. The width of the remaining five annular partitions 9 is 250mm, and they are installed horizontally at equal intervals of 100mm from the uppermost annular partition; th...

Embodiment 2

[0055] Others are the same as in Embodiment 1, and the number of annular partitions is 4 (corresponding to the total height of the housing of the flow equalizing device of 880 mm). When the design air supply speed is 1.0, 1.5 and 2.0m / s respectively, when using the flow equalization device of the present invention, the maximum difference between the speed of the 12 measuring points and the design value is 10.0%, 12.7% and 16.0%, respectively, and the average deviation is 5.4% respectively , 6.8% and 8.1%; when the traditional hollow shell static pressure box device is used, the maximum difference between the speed of the 12 measuring points and the design value is 29.3%, 27.4% and 43.9%, and the average deviation is 16.5%, 15.7% and 18.9% respectively %. Compared with the latter, the wind output accuracy of the former is increased by 205.6%, 130.9% and 133.3% respectively.

[0056] In terms of the uniformity of the air outlet 4 of the annular slit air outlet, the annular equa...

Embodiment 3

[0058]Others are the same as in Embodiment 1, and the number of annular partitions is 2 (corresponding to the total height of the housing of the flow equalizer 680mm). When the design air supply speed is 1.0, 1.5 and 2.0m / s respectively, when using the flow equalizing device of the present invention, the maximum difference between the speed of the 12 measuring points and the design value is 7.0%, 10.0% and 18.5%, respectively, and the average deviation is 4.2% respectively , 5.5% and 8.4%; when the traditional hollow shell static pressure box device is used, the maximum difference between the speed of the 12 measuring points and the design value is 44.0%, 62.7% and 79.1%, and the average deviation is 20.3%, 22.2% and 27.7% %. Compared with the latter, the wind output accuracy of the former is increased by 383.3%, 303.6% and 229.8% respectively.

[0059] Regarding the air outlet uniformity of the annular slit air outlet, the annular slit air outlet unevenness is 3.9% and 5.5% ...

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Abstract

The invention discloses an annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply. The apparatus comprises an air inlet pipe and a housing, and the housing is an annular barrel with the upper end being closed. The housing sleeves a using cylinder, and the inner wall of the inner barrel of the housing is tightly attached to the outer wall of the cylinder. The air inlet pipe is arranged at the upper end of the housing, the central axis of the air inlet pipe is perpendicular to and intersects with the central axis of the housing, and the air inlet pipe is communicated with the interior of the housing. 2-6 annular separator plates are horizontally arranged in the housing along the axial direction of the housing. The annular separator plates are alternatively arranged on the inner wall of the outer barrel and the outer wall of the inner barrel of the housing from up to down, so that a channel whose cross section becomes larger and smaller alternatively is formed in the housing along the axial direction of the housing. According to the invention, the air-out uniform effect of an annular slot air outlet is improved, the air is blown vertically and downwardly, and the blown air is less mixed with the ambient air, so that the effectiveness of the cylinder wall-attached air supply is improved. The flow equalizing apparatus is applicable to large-space buildings, and is not limited by applications.

Description

technical field [0001] The invention relates to a uniform air supply device with circular equal cross-section, in particular to a flow equalization device applied to a cylindrical wall surface-attached air supply. The device 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 ventilatio...

Claims

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Application Information

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IPC IPC(8): F24F13/06
CPCF24F13/06
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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