CN201497419U - EGR cooler and spiral deflector thereof - Google Patents

EGR cooler and spiral deflector thereof Download PDF

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Publication number
CN201497419U
CN201497419U CN2009201917648U CN200920191764U CN201497419U CN 201497419 U CN201497419 U CN 201497419U CN 2009201917648 U CN2009201917648 U CN 2009201917648U CN 200920191764 U CN200920191764 U CN 200920191764U CN 201497419 U CN201497419 U CN 201497419U
Authority
CN
China
Prior art keywords
deflector
shell
spiral
thermal medium
cold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009201917648U
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Chinese (zh)
Inventor
陆国栋
周健伟
孔芬霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU YINLUN SCIENCE AND TECHNOLOGY Co Ltd
Zhejiang Yinlun Machinery Co Ltd
Original Assignee
HANGZHOU YINLUN SCIENCE AND TECHNOLOGY Co Ltd
Zhejiang Yinlun Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HANGZHOU YINLUN SCIENCE AND TECHNOLOGY Co Ltd, Zhejiang Yinlun Machinery Co Ltd filed Critical HANGZHOU YINLUN SCIENCE AND TECHNOLOGY Co Ltd
Priority to CN2009201917648U priority Critical patent/CN201497419U/en
Application granted granted Critical
Publication of CN201497419U publication Critical patent/CN201497419U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The utility model relates to a shell-and-tube heat exchanger and a deflector thereof. A tube bundle, the deflector, a thermal medium inlet end plate and a thermal medium outlet end plate are arranged in a shell on which a cold medium inlet pipe and a cold medium outlet pipe are arranged. The utility model is characterized in that the deflector is a discontinuous structure and integrally and intermittently spiral, and through holes are arranged thereon; and the tube bundle penetrates through the through holes, and both ends of the tube bundle are respectively positioned on through holes arranged on the thermal medium inlet end plate and the thermal medium outlet end plate. The distance from the axis of the cold medium inlet pipe and that from the axis of the cold medium outlet pipe to the center of circle of the cross section of the shell are respectively half of the radius of the shell, and the range of an included angle thereof is from 30 degrees to 60 degrees. The EGR cooler adopts the intermittent spiral deflector, a spiral passage is formed in the shell after the deflector is welded and assembled with the shell and the tube bundle, and cooling media on the side of the shell flow along the spiral passage and keep the same included angle with the tube bundle in the passage so as to keep the impact effect on the tube bundle all along, thereby leading the effect of heat exchange to be good.

Description

A kind of cooler for recycled exhaust gas and spiral deflector thereof
Technical field
The utility model relates to cooler for recycled exhaust gas and spiral deflector thereof, refers to the shell-side deflector especially.
Background technology
In the use of shell-and-tube cooler for recycled exhaust gas, shell-side is generally labyrinth structure , the shell-side medium flow process have several sections strokes will with the pipe PARALLEL FLOW, reduced the heat exchange effect.Some labyrinth structure is more simplified, and shell-side has only one to two deflector, some in addition do not have deflector.This structure all can have influence on the exchange capability of heat of heat exchanger more or less.Under this background, the helical structure deflector arises at the historic moment, and this kind structure deflector can make shell fluid and tube bank remain identical angle, both can reduce flow resistance, make flow regime stable, can keep higher impact to tube bank again, thereby heat exchange efficiency is significantly improved relatively.
Though the spiral stream guidance sheet heat exchanger is also arranged, as 200510043033.5 and the described deflector of US2006/0130329A1 be continuous deflector, though also be to be formed by connecting by the spiral unit, processing technology is comparatively complicated, material expends more simultaneously.
Summary of the invention
To be solved in the utility model is the above-mentioned defective that prior art exists, aim to provide a kind of cooler for recycled exhaust gas and deflector thereof, both consider the water conservancy diversion effect of spiral deflector, considered the simple and direct and light-weight design of processing technology simultaneously, changed continuous deflector into discontinuous formula deflector.
The technical scheme that addresses the above problem employing is: a kind of spiral deflector of cooler for recycled exhaust gas, comprise the deflector body, and it is characterized in that described deflector is a discontinuous construction, integral body is interrupted helical form, offers the through hole that passes through for tube bank on it.
According to the utility model, the pitch of deflector is greater than the diameter of cold medium inlet on the heat exchanger shell and cold media outlet pipe.
According to the utility model, described deflector is single-screw shape structure or many helicoidal structures.
The utility model also will provide a kind of shell-and-tube exchanger, be provided with tube bank, deflector, thermal medium sheet inlet and thermal medium outlet end plate in the housing, housing is provided with cold medium inlet and cold media outlet pipe pipe, it is characterized in that described deflector is a discontinuous construction, integral body is interrupted helical form, offers through hole on it; Described tube bank runs through through hole, and two ends are positioned at respectively on the through hole of offering on thermal medium sheet inlet and the thermal medium outlet end plate.The axis of cold medium inlet and cold media outlet pipe pipe and housing cross section center of circle distance are half of housing radius, and its angular range is spent to 60 degree from 30.
Cooler for recycled exhaust gas of the present utility model, adopt spiral deflector, after deflector and housing and tube bank welding assembling are finished, in housing, form helical duct, the shell-side cooling medium flows along helical duct, in passage, keep same angle with tube bank all the time, remain impact effect, good effect of heat exchange tube bank.
Advantage of the present utility model:
1) the shell-side medium forms certain included angle with tube bank all the time in flowing, and impingement heat transfer is effective.
2) shell-side medium flow process is longer relatively.
3) do not have the dead angle in the shell-side media flow process, flow resistance is less relatively.
4) cold medium inlet and cold media outlet tube angulation are optimized, and can pass in and out the shell-side passage that spiral deflector forms swimmingly, and resistance is little.
When 5) helical channel is convenient to use for the first time shell side gas is discharged, improve heat exchange efficiency.
6) easier processing of discontinuous deflector and assembling.
7) discontinuous deflector is effectively ensureing outside the helical flow of spiral sides fluid, also makes deflector weight saving, and cost reduces.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of housing.
Fig. 2 is the shell-and-tube heat exchanger schematic diagram that adopts the utility model spiral deflector.
Fig. 3 is the core body decomposing schematic representation.
Fig. 4 (A) is the utility model spiral deflector front view, and Fig. 4 (B) is the vertical view of spiral deflector.
Fig. 5 is cold medium turnover tube hub line and heat exchanger shell axis angle schematic diagram.
The specific embodiment
Discontinuous deflector 8 is made of a plurality of spirals unit 8-1,8-2,8-3, and integral body is interrupted helical form, and each spiral unit 8-1,8-2,8-3 are a complete spiral, and have same phase, pitch of adjacent spiral unit interval.
With reference to Fig. 1-3, shell-and-tube exchanger is made up of housing 2 and core body, and its middle shell 2 comprises thermal medium suction flange 1, housing 2, cold medium inlet 3, thermal medium outlet(discharge) flange 4 and cold media outlet pipe 5.Core body comprises thermal medium sheet inlet 6, tube bank 7, spiral deflector 8 and thermal medium outlet end plate 9; Tube bank 7 runs through through hole 10, and two ends are positioned at respectively on the through hole of offering on thermal medium sheet inlet 6 and the thermal medium outlet end plate 9 11,12.During heat exchanger work, hot side medium is flowed out by thermal medium outlet(discharge) flange 4 through the tube bank back by thermal medium suction flange 1, cold medium enters housing 2 by cold medium inlet 3, behind the helical duct that is made of spiral deflector 8 and tube bank between housing, is flowed out by cold media outlet pipe 5.
With reference to Fig. 4, spiral deflector is stamped to form by corrosion resistant plate, and tube bank circular hole can be finished by technologies such as line cuttings on it.
With reference to Fig. 5, cold medium inlet 3 and cold media outlet pipe 5 tubular axis lines and housing cross section center of circle distance are half of housing radius, and angle C scope is spent to 60 degree from 30.
What should be understood that is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection domain of the present utility model.

Claims (8)

1. the discontinuous spiral deflector of cooler for recycled exhaust gas comprises the deflector body, it is characterized in that described deflector (8) is a discontinuous construction, and integral body is interrupted helical form, offers the through hole (10) that passes through for tube bank (7) on it.
2. cooler for recycled exhaust gas deflector as claimed in claim 1 is characterized in that the diameter of the pitch of described deflector (8) greater than cold medium inlet on the heat exchanger shell and cold media outlet pipe.
3. shell-and-tube exchanger deflector as claimed in claim 1, it is characterized in that described deflector (8) is made of a plurality of spirals unit (8-1,8-2,8-3), each spiral unit is a complete spiral, and the unit has same phase, pitch in interval between the adjacent cells.
4. as any one described cooler for recycled exhaust gas deflector of claim 1-3, it is characterized in that described deflector (8) is single-screw shape structure or many helicoidal structures.
5. shell-and-tube exchanger, be provided with tube bank, deflector, thermal medium sheet inlet and thermal medium outlet end plate in the housing, housing is provided with cold medium inlet and cold media outlet pipe pipe, it is characterized in that described deflector is a discontinuous construction, integral body is interrupted helical form, offers through hole on it; Described tube bank runs through through hole, and two ends are positioned at respectively on the through hole of offering on thermal medium sheet inlet and the thermal medium outlet end plate.
6. shell-and-tube exchanger as claimed in claim 5 is characterized in that the axis of cold medium inlet and cold media outlet pipe pipe and half that housing cross section center of circle distance is the housing radius, and its angular range is spent to 60 degree from 30.
7. shell-and-tube exchanger as claimed in claim 5, it is characterized in that described deflector (8) is made of a plurality of spirals unit (8-1,8-2,8-3), each spiral unit is a complete spiral, and the unit has same phase, pitch in interval between the adjacent cells.
8. as any one described shell-and-tube exchanger of claim 5-7, it is characterized in that described deflector (8) is single-screw shape structure or many helicoidal structures.
CN2009201917648U 2009-08-20 2009-08-20 EGR cooler and spiral deflector thereof Expired - Lifetime CN201497419U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201917648U CN201497419U (en) 2009-08-20 2009-08-20 EGR cooler and spiral deflector thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201917648U CN201497419U (en) 2009-08-20 2009-08-20 EGR cooler and spiral deflector thereof

Publications (1)

Publication Number Publication Date
CN201497419U true CN201497419U (en) 2010-06-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201917648U Expired - Lifetime CN201497419U (en) 2009-08-20 2009-08-20 EGR cooler and spiral deflector thereof

Country Status (1)

Country Link
CN (1) CN201497419U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619648A (en) * 2012-03-21 2012-08-01 浙江银轮机械股份有限公司 Plate-fin EGR (Exhaust Gas Recirculation) cooler with heat insulation function
CN103335552A (en) * 2013-06-28 2013-10-02 华中科技大学 Turbulent flow element of convection heat transfer in strengthening pipes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619648A (en) * 2012-03-21 2012-08-01 浙江银轮机械股份有限公司 Plate-fin EGR (Exhaust Gas Recirculation) cooler with heat insulation function
CN102619648B (en) * 2012-03-21 2014-06-04 浙江银轮机械股份有限公司 Plate-fin EGR (Exhaust Gas Recirculation) cooler with heat insulation function
CN103335552A (en) * 2013-06-28 2013-10-02 华中科技大学 Turbulent flow element of convection heat transfer in strengthening pipes
CN103335552B (en) * 2013-06-28 2015-09-09 华中科技大学 The turbulent element of heat convection in a kind of enhanced tube

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CX01 Expiry of patent term

Granted publication date: 20100602

CX01 Expiry of patent term