Pipe shell type heat exchanger and baffle

A heat exchanger and deflector technology, applied in the field of shell-side deflectors and spiral deflectors of shell-and-tube heat exchangers, can solve problems such as reducing heat exchange effect, and achieve improved heat exchange efficiency, low resistance, The effect of angle optimization

Inactive Publication Date: 2007-10-17
ZHEJIANG YINLUN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the use of shell and tube heat exchangers, the shell side is usually a labyrinth structure During the flow process, the medium on the shell side has to flow parallel to the tube for several sections, which reduces the heat transfer effect

Method used

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  • Pipe shell type heat exchanger and baffle
  • Pipe shell type heat exchanger and baffle
  • Pipe shell type heat exchanger and baffle

Examples

Experimental program
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Embodiment Construction

[0021] Referring to Figures 1-3, the shell-and-tube heat exchanger consists of a shell 2 and a core, where the shell 2 includes a heat medium inlet flange 1, a shell 2, a cold medium inlet pipe 3, a heat medium outlet flange 4 and Cold medium outlet pipe 5. The core body includes a heat medium inlet end plate 6, a tube bundle 7, a spiral deflector 8 and a heat medium outlet end plate 9; the tube bundle 7 runs through a through hole 10, and the two ends are respectively positioned on the heat medium inlet end plate 6 and the heat medium outlet end plate 9 on the through holes 11,12 offered. When the heat exchanger is working, the hot side medium flows out from the heat medium inlet flange 1 through the tube bundle and then flows out from the heat medium outlet flange 4, and the cold medium enters the shell 2 from the cold medium inlet pipe 3, and passes through the shells by the spiral deflector 8 and the spiral channel formed by the tube bundle, the cold medium outlet pipe 5 ...

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PUM

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Abstract

The invention discloses a tubular-shell type heat exchanger and deflector thereof. The deflector is of spiral-shape structure, and tube-beam in shell penetrates in the same. The shell and the spiral deflector form a spiral channel, cooling medium of shell side flows along the channel, always keeping a fixed included angle to the tube-beam, to effectively crash the tube-beam, so that heat exchange effect is good. The advantages of the invention includes: (1) the medium of the shell side always keeps a fixed included angle to the tube-beam in flowing, so that the invention has good crash heat exchange effect; (2) flowing distance of the medium of the shell side is relative longer; (3) dead angle does not exist during the flowing procedure of the medium of the shell side, so that flowing resistance is relatively small; (4) angle between cold medium inlet tube and cold medium outlet tube is optimized, so the cold medium can smoothly go in and out the shell side channel formed by spiral deflector for the small resistance; (5) spiral channel is easy to discharge the shell side gas at initial use thereby enhancing heat exchange efficiency.

Description

technical field [0001] The invention relates to a spiral deflector of a shell-and-tube heat exchanger, especially a shell-side deflector, in particular to a spiral deflector. It can be widely used in various shell-and-tube heat exchangers, such heat exchangers include EGR coolers, oil-water coolers, and the like. Background technique [0002] During the use of shell and tube heat exchangers, the shell side is usually a labyrinth structure During the flow process, the medium on the shell side has to flow parallel to the tube for several sections, which reduces the heat exchange effect. Especially in the current shell-and-tube EGR cooler, the labyrinth structure is generally more simplified, and there are only one or two deflectors on the shell side, and some even have no deflectors. This structure will more or less affect the heat exchange capacity of the heat exchanger. In this context, a helical deflector came into being. This kind of structure can keep the shell side f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F9/22F28D7/00
Inventor 陆国栋安晓平
Owner ZHEJIANG YINLUN MACHINERY
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