90-degree rectification rectangular bent pipe

An elbow and rectangle technology, applied in the field of local components, can solve the problems of affecting indoor airflow distribution, indoor actual comfort can not meet design requirements, affecting indoor thermal comfort, etc.

Inactive Publication Date: 2011-02-02
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that the fluid flow rate is not uniform
In the field of HVAC, if this part of the fluid is directly sent into the room, it will affect the indoor air distribution, so that the actual indoor comfort cannot meet the design requirements, thus affecting the indoor thermal comfort.

Method used

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  • 90-degree rectification rectangular bent pipe
  • 90-degree rectification rectangular bent pipe
  • 90-degree rectification rectangular bent pipe

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specific Embodiment

[0039] Specific embodiments of the present invention are provided below, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solutions of the present application all fall within the scope of protection of the present invention.

[0040] Following the above technical scheme, taking the optimization process of the central air-conditioning duct connecting the 90° rectangular elbow as an example, first determine the dimensions of each part of the 90° rectangular elbow pipe, where the size of the inlet section 1 is 300mm×300mm, and the size of the outlet section 7 is 300mm ×300mm, the camber is 1.5, the length of the rectification section 10 is 300mm, the length of the rectification vane in the rectification section is 100mm, and the length of the guide vane is 300mm, then list the discrete format of the momentum equation and the continuity equation, and use the s...

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Abstract

The invention discloses a 90-degree rectification rectangular bent pipe comprising an inlet section, a 90-degree bent turning section and an outlet section, wherein one end of the inlet section is connected with one end of the 90-degree bent turning section, and the other end of the 90-degree bent turning section is connected with a buffer section; a rectification section connected with the outlet section is arranged below the buffer section; an upper end in the rectification section is provided with rectification vanes; and each rectification vane is provided with a fluid vane which divides the rectification section into five fluid paths with equal flow. The peculiar design of the 90-degree rectification bent pipe eliminates speed stratification formed after fluid flows through the 90-degree rectangular bent pipe so as to realize the purpose of rectifying the fluid which flows through the 90-degree rectangular bent pipe.

Description

technical field [0001] The invention relates to a partial component in a ventilation and air-conditioning system, in particular to a 90° rectifying rectangular elbow. Background technique [0002] The 90° rectangular elbow is a very common pipe fitting for changing the flow direction of fluid in HVAC power fluid machinery. In the fluid delivery pipeline, due to the turning of the fluid, there is a centrifugal force from the center of curvature to the outer arc of the pipe, which makes the fluid When transitioning from a straight section of pipe to a curved section (before the end of the bend), the pressure on the outer diameter arc increases and the pressure on the inner diameter arc decreases. Therefore, the flow velocity of the fluid at the arc of the outer diameter will decrease, while the velocity of the fluid at the arc of the inner diameter will correspondingly increase. Therefore, a diffusion effect occurs near the outer radius arc, and a contraction effect occurs ne...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F15D1/04
Inventor李安桂高然邱国志雷文君郝鑫鹏
OwnerXI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY