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A square column wall-attached air supply with a circular equal-section flow equalization device

A technology with equal cross-section and wall surface, which is applied in the field of uniform cross-section air supply devices, can solve the problems of not being suitable for large-space buildings and application restrictions, and achieve the effects of improving the uniformity of the air outlet, improving the effectiveness, and lengthening the flow distance

Active Publication Date: 2017-09-01
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 square-column wall-attached air supply with a return-shaped equal-section flow equalizer to form a ventilation mode based on square-column wall-attachment, Solve the problems in the above-mentioned prior art that are limited by application and not suitable for large-space buildings

Method used

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  • A square column wall-attached air supply with a circular equal-section flow equalization device
  • A square column wall-attached air supply with a circular equal-section flow equalization device
  • A square column wall-attached air supply with a circular equal-section flow equalization device

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Experimental program
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Effect test

Embodiment 1

[0050] According to the actual use situation, the experimental model of the return-shaped equal-section flow equalization device is established, and the square column with a side length 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 return-shaped air duct is 300mm, 6 The height of the 5 flow areas separated by the back-shaped partition 10 is 100 mm, the height of the flow-sharing area between the back-shaped orifice 9 and the adjacent round-shaped partition 10 is 100 mm, the height of the air outlet area is 100 mm, and the height of the diversion section is 100 mm. 80mm, 1080mm in total); the vertical length of the wedge-shaped air inlet 6 is 1000mm, the height is 300mm, the width of the inlet of the air inlet 6 is 300mm, and the width of the end is 0mm; The bottom surface of the return-shaped air duct of the device is installed horizontally, and the width of the other five return-s...

Embodiment 2

[0058] Others are the same as in Embodiment 1, and the number of return-shaped partitions is 4 (corresponding to the total height of the housing of the current equalizing device of 880 mm). When the design air supply speeds are 1.0, 1.5 and 2.0m / s respectively, when the flow equalization device of the present invention is adopted, the maximum difference between the speed of the 20 measuring points and the design value is 17.0%, 16.0% and 16.5%, and the average deviation is 11.4% respectively , 9.9% and 11.7%; when the traditional hollow shell static pressure box device is used, the maximum difference between the speed of the 20 measuring points and the design value is 73.0%, 89.3% and 75.0%, and the average deviation is 25.6%, 26.1% and 26.5% %. Compared with the latter, the wind output accuracy of the former is increased by 124.6%, 163.6% and 126.5% respectively.

[0059] In terms of the air outlet uniformity of the return-shaped slit air outlet, the unevenness of the return...

Embodiment 3

[0060] Others are the same as in Embodiment 1, and the number of return-shaped 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 current equalizing device of the present invention, the maximum difference between the speed of 20 measuring points and the design value is 29.0%, 32.7% and 37.5%, respectively, and the average deviation is 14.7% respectively , 16.8% and 16.8%; when the traditional hollow shell static pressure box device is used, the maximum difference between the speed of the 20 measuring points and the design value is 90.0%, 104.0% and 103.5%, and the average deviation is 27.5%, 27.6% and 27.1% %. Compared with the latter, the air output accuracy of the former is increased by 87.1%, 64.3% and 61.3% respectively.

[0061] In terms of air outlet uniformity of the return-shaped slit air outlet, using the return-shaped equal-section flow e...

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Abstract

The invention discloses a square-column wall-attached return-shaped equal-section flow equalization device for air supply, which comprises an air inlet pipe and a casing, the casing is a return-shaped cylinder with a closed upper end, and the four sides of the cylinder are equal in length; The casing is set outside the applied square cylinder, and the inner wall of the inner cylinder of the casing is close to the outer wall of the square cylinder; the central axis of the air inlet pipe is perpendicular to the central axis of the casing; in the casing, it is horizontal along the axial direction of the casing There are 2 to 6 back-shaped partitions, and these back-shaped partitions are alternately arranged on the inner wall of the outer cylinder and the outer wall of the inner cylinder from top to bottom, so that a cross-section is formed in the casing along the axial direction of the casing. Expanding and shrinking channels. The invention improves the uniform effect of the air outlet of the return-shaped slit air outlet, the direction is vertically downward, less mixing with the surrounding air, and the effectiveness of the air supply attached to the square cylinder surface is improved. It is suitable for large-space buildings and is not affected by it. Application restrictions.

Description

technical field [0001] The invention relates to a uniform air supply device with equal cross-section, especially a flow equalization device applied to the wall surface of a square column. The device is suitable for civil and industrial buildings, subways, hydropower stations and other special building spaces. Ventilation and air conditioning 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. Howeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F13/08
CPCF24F13/08
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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