CN101476828B - Helical silencing heat exchanger - Google Patents
Helical silencing heat exchanger Download PDFInfo
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- CN101476828B CN101476828B CN2009100712560A CN200910071256A CN101476828B CN 101476828 B CN101476828 B CN 101476828B CN 2009100712560 A CN2009100712560 A CN 2009100712560A CN 200910071256 A CN200910071256 A CN 200910071256A CN 101476828 B CN101476828 B CN 101476828B
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- interior pipe
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Abstract
The invention discloses a helical silencing heat exchanger, which relates to a device for heat exchange by utilizing tail gas of an engine. The helical silencing heat exchanger comprises a shell (1) and an inner pipe (2), wherein the front end and the rear end of the shell (1) are provided with a heat exchange working substance outlet (3) and an exhaust gas outlet (4); a pipe cavity of the inner pipe (2) is partitioned at the middle part, the inner pipe (2) and the shell (1) are coaxially fixed; and helical heat exchanger fins (8) are coiled between the inner pipe (2) and the shell (1) and partition the space between the shell (1) and the inner pipe (2) into a helical exhaust gas channel (9) and a helical heat exchange working substance channel (10). The helical silencing heat exchanger solves technical problems of large circulation resistance of working substances, more use of steel materials, poor silencing effect, and the like, which are caused by increasing the heat exchange area of the cold and hot working substances to realize certain heat energy recovery; and the helical silencing heat exchanger simultaneously achieves silencing heat exchange effects of different working conditions (different displacements) of the engine. The device has the advantages of good aerodynamic quality, good silencing effect, small volume, simple structure, firmness, durability, safety, and reliability.
Description
Technical field
The present invention relates to utilize motor exhaust to carry out the device of heat exchange, specifically is a kind of spiral silencing heat exchanger.
Background technology
Engine exhaust by high temperature and with periodically, the flow-disturbing formed of eddy current and the aeriality resonance noise mist of pulsing.Heat balance test by engine is known, the heat that engine exhaust is taken away accounts for about 30%～40% of fuel combustion heat, therefore reclaim its waste heat to satisfy heating in the car in winter, summer refrigeration and improve Engine Inlet Temperature, and then the heat utilization efficiency of raising engine, very meet " energy-saving and emission-reduction " strategy and policy.But at present silencer is all formed single, multi-cavity chamber by tube sheet material and chadless thereof and is had sound-absorbing material and multiple mufflers such as resistive, the resistance that constitutes and impedance composite, the waste gas afterheat recovery unit that is adopted, also form different heat-exchange devices by various tubing and sheet material, its complex structure, flow resistance are big, heat transfer property and performance muffler are difficult to take into account, influence the dynamic property and the economy of engine, and seasonality is stronger, therefore is not widely used as yet.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of simple in structure, flow resistance is little, the helical silencing heat exchanger that heat transfer property and performance muffler are good.
Technical solution of the present invention is: it comprises shell and interior pipe, shell is the cylinder-like body of closed at both ends, the shell front-end and back-end are respectively equipped with heat-exchange working medium outlet and waste gas outlet, interior pipe tube chamber is separated in the middle part, interior pipe is fixed with the shell coaxial line, shell is stretched out at interior pipe two ends, interior pipe and shell disk are arranged with even number spiral heat exchanger fin, the spiral heat exchanger fin is separated into waste gas helical duct and heat-exchange working medium helical duct with the space between shell and interior pipe, the waste gas helical duct seals in front port, the heat-exchange working medium helical duct seals in rear port, and interior pipe is respectively equipped with the useless gas entering opening and the heat-exchange working medium that are connected with the blind end of waste gas helical duct and heat-exchange working medium helical duct and enters the hole on the tube wall of separator both sides.
Technique effect of the present invention is: it has solved owing to the cold and hot working medium heat exchange area of increase reaches certain recovery heat energy and has caused technical barriers such as the working medium circulating resistance is big, many with the steel material, noise elimination weak effect; Solve the noise elimination heat exchange effect of Under Different Work Condition of Engine (different displacements) simultaneously.It has good aerodynamic quality, noise elimination is effective, volume is little, advantage simple in structure, sturdy and durable, safe and reliable.
Description of drawings
Accompanying drawing is a sectional structure schematic diagram of the present invention.
The specific embodiment
As shown in drawings, it comprises shell 1 and interior pipe 2, shell 1 is the cylinder-like body of closed at both ends, shell 1 front-end and back-end are respectively equipped with heat-exchange working medium outlet 3 and waste gas outlet 4, interior pipe 2 tube chambers are provided with separator 5 and separate in the middle part, interior pipe 2 front ends are as exhaust gas entrance 6, interior pipe 2 rear ends are as heat-exchange working medium inlet 7, separator 5 will be separated into exhaust gas entrance end and heat-exchange working medium arrival end two parts before and after interior pipe 2 tube chambers, interior pipe 2 is fixed with shell 1 coaxial line, shell 1 is stretched out at interior pipe 2 two ends, interior pipe 2 and shell 1 disk are arranged with even number spiral heat exchanger fin 8, spiral heat exchanger fin 8 is separated into waste gas helical duct 9 and heat-exchange working medium helical duct 10 with the space of 2 of shell 1 and interior pipes, waste gas helical duct 9 is dividing plate 11 sealings before front port is provided with, heat-exchange working medium helical duct 10 is provided with rear bulkhead 12 sealings in rear port, and interior pipe 2 is respectively equipped with the useless gas entering opening 13 and the heat-exchange working medium that are connected with the blind end of waste gas helical duct 9 and heat-exchange working medium helical duct 10 and enters hole 14 on the tube wall of separator 5 both sides.
Useless gas entering opening 13 front portions are divided into circular hole, and the rear portion is divided into the slotted hole along the hand of spiral.
Heat-exchange working medium inlet 7 can be the hole of large-size such as square hole.
Between useless gas entering opening 13 and separator 5, be provided with temperature control adjusting valve door 15 in interior pipe 2 tube chambers.Temperature control adjusting valve door 15 is awl cylindrical body of being made by some bimetal leafs, and its awl mouthful end bimetal leaf fixes by becket, and the awl tip can be opened with temperature rising degree.
The tube wall of interior pipe 2 between temperature control adjusting valve door 15 and separator 5 is provided with the resonance hole 16 that is connected with waste gas helical duct 9.
In the present embodiment, spiral heat exchanger fin 8 is two, and the space of 2 of shell 1 and interior pipes is separated into waste gas helical duct 9 and 10 two passages that twine and do not communicate mutually of heat-exchange working medium helical duct.
The present invention presses according to the noise speed of hot waste gas, noise and hot waste gas pressure and its variation of temperature relation, and the inherent characteristic manufacturing enforcement of the basic principle of eliminating the noise, metal material.No interpolation pipe of this device and mozzle and reverse chamber, good aerodynamic quality; When the engine middle and slow speed of revolution, temperature control adjusting valve door 15 is closed, and the reactive muffling effect is played in resonance hole 16 in the middle of it, so low, the regional noise elimination better effects if of mid-frequency noise in the middle and slow speed of revolution; Waste gas helical duct 9 in this device can be made into rotating regular curvature shapes, and promptly corrugated tube shape is difficult to produce standing wave, does not produce covibration; Spiral channel in this device makes the wavelength short high frequency sound wave and the surfaces of revolution obtain good contact-impact and reflection, thereby sound deadening capacity is obviously improved; Passage helical pipe peripheral board in this device adopts ripple acoustic streaming formula, makes pipe shape reach continuous variation, and the partial structurtes drag losses is little, its good aerodynamic quality, and pulse pneumatic reflected pressure ripple is little, and heat exchange area is big; Spiral acoustic streaming formula passage in this device makes the sound wave direction of propagation and the air-flow direction of motion inconsistent, even opposite, and sound wave attenuation coefficient in Heat Room is not descended to be increased on the contrary, more helps eliminating the noise; This device project organization is difficult for producing noise once more, can suitably improve air velocity, reduces and uses material to make the aerodynamic quality of this device better; The design of this device can be shortened blast pipe length, increases silencing end comb cross section, reduces exhaust resistance, eliminates that gas excites tube wall and the resonance noise of the air column that produces is well improved engine power, back pressure, specific fuel consumption; The peak-to-valley value and the revolution number of the pitch by pipe 2 diameters, spiral Heat Room in changing, inner and outer diameter, ripple acoustic streaming formula, the circulation section is shunk in the volume, the expansion that promptly change Heat Room, to be applicable to various discharge capacity vehicles, adjusts very simple.
Under the medium and small operating mode of engine, when being the engine middle and slow speed of revolution (temperature control adjusting valve door 15 is not opened), engine exhaust enters waste gas helical duct 9 through exhaust gas entrance 6, useless gas entering opening 13, this moment, air-flow was divided into many sprouts, and it is mobile along the curvature surface of waste gas helical duct 9, curvature surface changes airflow direction smoothly on the one hand, makes air-flow repeatedly penetrate sound wave with conduction of channel surface contact-impact and reflexed; Make air-flow repeat to expand curvature section (the ripple decision) again simultaneously, exhaust gas heat is passed to heat absorption working medium by volute wall air-flow is cooled off by shrinking; Before this external temperature control adjusting valve door 15 was opened, the resonant silencing effect was played in resonance hole 16 thereafter, and outstanding selectively elimination is low, the noise of intermediate frequency composition.The waste gas that has exchanged heat enters inwall and is provided with sound-absorbing material waste expansion steam chest, i.e. the space of 1 on rear bulkhead 12 and shell, and middle and high audio-frequency noise is further eliminated, after waste gas outlet 4 enters atmosphere.(automobile engine is meant in operation below 2000 rev/mins) under the medium and small operating mode of engine that Here it is that the process of circulation of engine exhaust waste gas mainly is the heat transferred helical corrugation tube wall with himself.Meanwhile cold working medium is entered by cold working medium inlet tube by pump or fan, enter heat-exchange working medium helical duct 10 by heat-exchange working medium inlet 7, the heat of waste gas helical duct 9 raises cold working medium temperature, becomes hot working fluid, and the hot working fluid after exchange finishes is discharged through heat-exchange working medium outlet 3.Above process consumes the energy of waste gas stream, and balance reduces the pressure oscillation of air-flow, gives hot working fluid with the thermal power transfer of waste gas, has reached the purpose of noise reduction heat exchange.
When the big operating mode of the high rotating speed of engine is moved (automobile engine is greater than 2000 rev/mins), therefore discharge capacity increases the delivery temperature rising time, temperature control adjusting valve door 15 is opened gradually, the effect of hole 16 and useless gas entering opening 13 of resonating this moment is the same, all enter hot waste gas to waste gas helical duct 9, further improve the waste gas flow area, make the waste gas of big operating mode enter waste gas helical duct 9 fast, carry out power conversion, near and reduce the engine exhaust back pressure, improve the air force (this moment exhaust noise with far below tyre noise) of engine.
Claims (5)
1. helical silencing heat exchanger, comprise shell (1) and interior pipe (2), it is characterized in that, shell (1) is the cylinder-like body of closed at both ends, shell (1) front-end and back-end are respectively equipped with heat-exchange working medium outlet (3) and waste gas outlet (4), interior pipe (2) tube chamber is separated in the middle part, interior pipe (2) is fixed with shell (1) coaxial line, shell (1) is stretched out at interior pipe (2) two ends, interior pipe (2) and shell (1) disk are arranged with even number spiral heat exchanger fin (8), spiral heat exchanger fin (8) is separated into waste gas helical duct (9) and heat-exchange working medium helical duct (10) with the space between shell (1) and interior pipe (2), waste gas helical duct (9) seals in front port, heat-exchange working medium helical duct (10) is in the rear port sealing, and interior pipe (2) is respectively equipped with the useless gas entering opening (13) and the heat-exchange working medium that are connected with the blind end of waste gas helical duct (9) and heat-exchange working medium helical duct (10) and enters hole (14) on the tube wall of separator (5) both sides.
2. helical silencing heat exchanger as claimed in claim 1 is characterized in that, described useless gas entering opening (13) front portion is divided into circular hole, and the rear portion is divided into the slotted hole along the hand of spiral.
3. helical silencing heat exchanger as claimed in claim 1 is characterized in that, is provided with temperature control adjusting valve door (15) in described interior pipe (2) tube chamber between useless gas entering opening (13) and separator (5).
4. helical silencing heat exchanger as claimed in claim 3 is characterized in that, described temperature control adjusting valve door (15) is the awl cylindrical body of being made by some bimetal leafs, and its awl mouthful end bimetal leaf fixes, and the awl tip can be opened with temperature rising degree.
5. helical silencing heat exchanger as claimed in claim 3 is characterized in that, described interior pipe (2) tube wall between temperature control adjusting valve door (15) and separator (5) is provided with the resonance hole (16) that is connected with waste gas helical duct (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100712560A CN101476828B (en) | 2009-01-08 | 2009-01-08 | Helical silencing heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100712560A CN101476828B (en) | 2009-01-08 | 2009-01-08 | Helical silencing heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101476828A CN101476828A (en) | 2009-07-08 |
| CN101476828B true CN101476828B (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100712560A Expired - Fee Related CN101476828B (en) | 2009-01-08 | 2009-01-08 | Helical silencing heat exchanger |
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| Country | Link |
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| CN (1) | CN101476828B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499895A (en) * | 2011-10-01 | 2012-06-20 | 韩杰 | Silencer |
| CN104848240B (en) * | 2015-05-20 | 2017-11-21 | 郑志强 | Spiral stream guidance hangs courage formula waste-heat recoverer |
| CN105089796A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Rotating vane type efficient noise-reduction air filtering device for gas turbine |
| CN105118497A (en) * | 2015-09-18 | 2015-12-02 | 贵州大学 | Tube-bundle perforated panel and spring cyclic structure sound absorption apparatus |
| CN106440867B (en) * | 2016-11-23 | 2024-04-19 | 浙江广涛卫厨有限公司 | Stainless steel heat exchanger |
| CN107673577B (en) * | 2017-10-27 | 2024-02-27 | 上海城投污水处理有限公司 | Double-spiral channel type heat exchange tube and sludge temperature rising and viscosity reducing device |
| CN108836630B (en) * | 2018-06-28 | 2020-07-14 | 广东工业大学 | Noise-proof earplug with silencing structure |
| US10539066B1 (en) * | 2018-11-21 | 2020-01-21 | GM Global Technology Operations LLC | Vehicle charge air cooler with an integrated resonator |
| CN110686547B (en) * | 2019-10-10 | 2021-08-17 | 安徽华汇建材有限公司 | Waste heat recovery device for waste gas environmental protection treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4325193A1 (en) * | 1993-07-27 | 1995-02-02 | Hoecker Hans Peter Dipl Ing | Device for exchanging heat |
| CN2447522Y (en) * | 2000-11-07 | 2001-09-12 | 胥林新 | Silencing apparatus using engine exhaust afterheat |
| CN2786288Y (en) * | 2005-04-27 | 2006-06-07 | 河北南风汽车设备集团有限公司 | Muffler in automobile exhaust heater |
-
2009
- 2009-01-08 CN CN2009100712560A patent/CN101476828B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4325193A1 (en) * | 1993-07-27 | 1995-02-02 | Hoecker Hans Peter Dipl Ing | Device for exchanging heat |
| CN2447522Y (en) * | 2000-11-07 | 2001-09-12 | 胥林新 | Silencing apparatus using engine exhaust afterheat |
| CN2786288Y (en) * | 2005-04-27 | 2006-06-07 | 河北南风汽车设备集团有限公司 | Muffler in automobile exhaust heater |
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| Publication number | Publication date |
|---|---|
| CN101476828A (en) | 2009-07-08 |
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Owner name: BEIJING RUIHAO TIANYU TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LIU FUGUI Effective date: 20130605 |
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Effective date of registration: 20130605 Address after: 100097, room 15, No. 315 West Fourth Ring Road North, Beijing, Haidian District Patentee after: Beijing Hao Rui Tianyu Technology Co. Ltd. Address before: 1510 room 121, hydropower building, 157000 East Xin'an street, Heilongjiang, Mudanjiang Patentee before: Liu Fugui |
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Granted publication date: 20100602 Termination date: 20140108 |