CN205895438U - A evaporimeter for engine exhaust EGR that recycles - Google Patents
A evaporimeter for engine exhaust EGR that recycles Download PDFInfo
- Publication number
- CN205895438U CN205895438U CN201521001777.6U CN201521001777U CN205895438U CN 205895438 U CN205895438 U CN 205895438U CN 201521001777 U CN201521001777 U CN 201521001777U CN 205895438 U CN205895438 U CN 205895438U
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- CN
- China
- Prior art keywords
- freon
- mainboard
- evaporimeter
- egr
- heat exchange
- 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.)
- Withdrawn - After Issue
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses an evaporimeter for engine exhaust EGR that recycles, including the elasticity corrugated metal pipe, inlet end cavity, the thin -walled metal shell that connect gradually, end cavity and tail gas flange give vent to anger, the thin -walled metal shell in be equipped with the core, the thin -walled metal shell is separated into two with heat exchange area between the flat pipe of core but liquid heat exchange area, freon is preheated region and the overheated region of freon evaporation. The utility model discloses reducing the gaseous temperature of exhaust gas recirculation simultaneously, heat the recovery that the boiling realized the energy to organic freon. Each heat exchange area mutual independence, can avoid the product became invalid under extreme condition or life -cycle time in became invalid and leaded to during freon gets into cycle of engine tail gas, simultaneously can also enhanced heat transfer with improve the product compactedness.
Description
Technical field
The utility model be related to engine waste heat recovery exhaust gas recirculation egr explosive evaporation device, belong to Waste Heat Recovery and
Heat exchanger field, the boiling that more particularly to a kind of motor exhaust for heavy truck organic Rankine bottoming cycle recycles is steamed
Send out device.
Background technology
Increasingly stringent with road vehicle Abgasgesetz and enforcement, after Europe six Abgasgesetz is implemented, the year two thousand twenty will enter
The implementation phase of the carbon emission regulation based on restriction co2 discharge.For this reason, proposing to the per 100 km fuel consumption of engine
Strict requirements and standard.For this reason, various Waste Heat Recovery technology are represented for technology with Rankine cycle, become Shape Of Things To Come and reduce
One of the maximally effective means of co2 discharge and technology.
Meanwhile, the efficiency of energy utilization ratio of engine is relatively low, and generally 40% about, remaining 60% heat is with various shapes
Formula is scattered and disappeared and is entered air.In engine various forms used heat, maximum with engine exhaust used heat proportion.And be based on used heat and return
The organic Rankine bottoming cycle received passes through the tail gas of engine and the used heat of waste gas recycling egr and cylinder sleeve of engine water to absorb,
Effective power output is converted into by decompressor, thus lifting Fuel Economy and the discharge reducing co2 indirectly.
In the explosive evaporation device of engines exhaust gas recirculation, it is that Rankine cycle organic working medium-freon absorbs high temperature tail
The heat of gas, then while reducing recycled offgas (as traditional egr cooler), absorb the heat of tail gas, realize energy conversion.
And in tail gas and refrigerant heat exchanging process, if there is product failure, lead to high pressure refrigerant to leak into tail gas, tail gas and cold
Matchmaker's freon simultaneously enters burning in engine chamber again.In this combustion process, freon can because Pintsch process and with
In the air n2React, produce hypertoxic cyanide gas and discharge air, heavy damage and pollution environment.
For this reason, in motor exhaust explosive evaporation device, freon is with tail gas heat exchange simultaneously, it is to avoid freon enters tail
Gas and engine combustion are indoor, become one of design key point of motor exhaust explosive evaporation device.Through the document patent No.
Us2012-0285167 and patent No. us2013-0205766, all using soldering processes, isolate tail gas and freon with plate, by
Excessive in solder joint, potential failure is very risky, once revealing, freon easily enters in recycling tail gas, leads to engine
The discharge of violent in toxicity.
Content of the invention
To be solved in the utility model is the problems referred to above that prior art exists, it is desirable to provide one kind is used for motor exhaust
Recycle the ebullator of egr.
For solving the above problems, the utility model employs the following technical solutions: a kind of motor exhaust that is used for recycles egr
Evaporimeter, including the elastic corrugated metal tube being sequentially connected, inlet end chamber, thin-wall metal shell, outlet side chamber and tail gas
Adpting flange, is provided with fuse in described thin-wall metal shell, described fuse includes at least one rows of flat pipes, inlet end mainboard, enters
Gas end pair mainboard, middle pair mainboard, outlet side pair mainboard and outlet side mainboard, the two ends of described flat tube respectively with described air inlet
End chamber and outlet side chamber UNICOM are it is characterised in that the heat exchange area between described thin-wall metal shell and flat tube is separated
The first coolant heat exchange area between one-tenth outlet side mainboard and outlet side pair mainboard, outlet side pair mainboard and middle pair mainboard
Between freon preheated zone, the freon evaporation superheat region between middle pair mainboard and inlet end pair mainboard and air inlet
The second coolant heat exchange area between the secondary mainboard in end and inlet end mainboard；On described thin-wall metal shell, correspondence is above-mentioned each
Be respectively equipped with region the first cooling liquid inlet, the first cooling liquid outlet, the first freon import, the first freon outlet, the
Two freon imports, the second freon outlet, the second cooling liquid inlet and the second cooling liquid outlet；The first described freon goes out
Mouth and the second freon import UNICOM.
A kind of evaporimeter recycling egr for motor exhaust of the present utility model, has the following characteristics that
1st, the utility model adopts integrated egr evaporimeter on Organic Rankine Cycle orc WHRS.This egr
Evaporimeter mainly utilizes organic matter Freon medium to absorb the tail gas heat quantity that motor exhaust recycles, and switchs to for HTHP
Acting Working medium gas.This device in the temperature reducing exhaust gas recirculation gas simultaneously, carries out ebuillition of heated real to organic freon
Existing energy recovery (that is to say the freon steam organic refrigerant freon being heated into HTHP from highly pressurised liquid, as
The working medium promoting decompressor acting realizes energy regenerating).
The 2nd, 3 secondary mainboards are placed on whole stainless steel flat tube, is changed so that whole heat exchanger core is divided into 4 independent of one another
Hot device region, according to inlet exhaust gas to outlet flow direction, 4 regions are respectively the second coolant heat exchange area, freon evaporation
First coolant heat exchange area of superheat region, freon preheated zone and afterbody, can avoid product in extreme circumstances
Lost efficacy in inefficacy or lifetime and led to freon to enter in cycle of engine tail gas, can also produce with raising augmentation of heat transfer simultaneously
Product compactedness.
3rd, the in-out end in tail gas arranges engine coolant passage.This cooling passage advantageously reduces flat tube and mainboard
Wall surface temperature, protection flat tube and mainboard soldered fitting, improve durability；In extreme circumstances, if freon refrigerant is sent out simultaneously
Raw leakage, coolant leakage is in engine cool fluid circulation, thus entering engine combustion after avoiding coolant leakage tail gas,
Produce hypertoxic tail gas.
As improvement of the present utility model, for guaranteeing that freon has enough degrees of superheat from the outlet of explosive evaporation device, in institute
The freon preheated zone stated, motor exhaust becomes counter-flow arrangement with liquid freon；Evaporate overheated zone in described freon
Domain, the motor exhaust of high temperature is in down current arrangement with freon, to improve heat transfer effect.In tail gas high-temperature part, high temperature follows again
Ring tail gas carries out heat exchange with gas-liquid two-phase freon first, because the freon gas-liquid Gas-liquid phase region coefficient of heat transfer is huge, leads
Cause the fluid temperature (F.T.) close to freon for the tube wall temperature of thin-wall metal shell, it is to avoid freon is contacted with high-temperature metal wall and leads to
The thermal cracking of freon.
As further improvement of the utility model, in described freon evaporation superheat region, it is additionally provided with baffling gear
Plate.Described hydraulic barrier is two pieces, is respectively placed in top and the bottom in this region, forms labyrinth passage.Described baffling
Baffle plate is near described second coolant heat exchange area setting.In this region because the temperature of tail gas is very high, by flat tube
Between place hydraulic barrier, flow velocity and the heat exchange coefficient of freon can be improved, thus reducing flat tube and the second secondary mainboard etc.
The surface temperature of metal wall, reduces thermal expansion denaturation and the thermal cracking avoiding freon and high-temperature metal wall.
Further improve as of the present utility model, the distance between described inlet end mainboard and inlet end pair mainboard
For 20～30mm；The distance between described outlet side mainboard and outlet side pair mainboard are 20～30mm.
Further improve as of the present utility model, inside described flat tube, place ripple type enhanced heat transfer fin,
Flow-disturbing within pipe for the fluid can be improved, destroy fluid boundary layer, realize augmentation of heat transfer purpose, and small product size and weight can be reduced
Amount.This fin belongs to non-discontinuous form fin, can effectively improve heat transfer, is unfavorable for the accumulation in metal surface of carbon distribution simultaneously.
As further improvement of the utility model, in the heat exchange area of freon, between flat tube and flat tube, place saw
Serrated fin 21, to realize in augmentation of heat transfer simultaneously, improving freon side compressive resistance.
As further improvement of the utility model, in described freon preheated zone, the zigzag wing between flat tube
Import and export, with freon, the diagonal angle being connected on piece and cut out two chamferings, the flow uniformity of refrigerant freon can be improved.
Further improve as of the present utility model, whole machine adopts stainless steel material, fuse passes through nickel-based brazing technique
Assembling, to avoid the generation of the acid gas component etching problem of other welding materials；Fuse is passed through with outside thin-walled metal-back
Argon arc welding connects, and realizes independent heat exchange and the flowing of each heat exchange area.
Brief description
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of medium flow chart of the evaporimeter recycling egr for motor exhaust of the utility model.
Fig. 2 is a kind of structural representation of the evaporimeter recycling egr for motor exhaust of the utility model.
Fig. 3 is a kind of outside drawing of the evaporimeter recycling egr for motor exhaust of the utility model.
Fig. 4 is the structural representation after the utility model removes thin-wall metal shell.
Fig. 5 is the structural representation of the utility model fuse.
Fig. 6 is the structural representation of the utility model mainboard.
Fig. 7 is the structural representation of the utility model pair mainboard.
Fig. 8 is the structural representation of the utility model hydraulic barrier.
Fig. 9 is the structural representation of the utility model flat tube.
Figure 10 is the structural representation of the utility model ripple type enhanced heat transfer fin.
Figure 11 is the structural representation of the utility model serrated fin.
Specific embodiment
Referring to the drawings, a kind of evaporimeter recycling egr for motor exhaust of the present utility model, including being sequentially connected
Elastic corrugated metal tube 1, inlet end chamber 2, thin-wall metal shell 5, outlet side chamber 22 and tail gas adpting flange 6, described
It is provided with fuse 3, described fuse 3 includes at least one rows of flat pipes 15, inlet end mainboard 16, the secondary master of inlet end in thin-wall metal shell 5
Plate 17, middle pair mainboard 18, outlet side pair mainboard 23 and outlet side mainboard 24, the two ends of described flat tube 15 are entered with described respectively
Gas end chamber 2 and outlet side chamber 22 UNICOM, the heat exchange area between described thin-wall metal shell 5 and flat tube 15 is divided into
The first coolant heat exchange area 34 between outlet side mainboard 24 and outlet side pair mainboard 23, outlet side pair mainboard 23 and centre
Freon between freon preheated zone 33 between secondary mainboard 18, middle pair mainboard 18 and inlet end pair mainboard 17 is vaporized
The second coolant heat exchange area 31 between thermal region 32 and inlet end pair mainboard 17 and inlet end mainboard 16；Described
It is respectively equipped with the first cooling liquid inlet 10, the first cooling liquid outlet 9, the first fluorine at corresponding above-mentioned each region on thin-wall metal shell 5
Leon import 14, the first freon export the 13, second freon import 11, the second freon exports the 7, second cooling liquid inlet 8
With the second cooling liquid outlet 7；The first described freon outlet 13 and the second freon import 11 UNICOM.
One group of flat metal tube 15 is the flat tube of many laser welding or the flat metal tube of integral die-cast shaping, exists as needed
Inlet end pair mainboard 17, middle pair mainboard 18 and outlet side pair mainboard 23 are inserted in flat tube relevant position, pipe two ends root with
Inlet end mainboard 16 and outlet side mainboard 24 connect.On a fuse, according to thermodynamic parameter and heat-transfer capability, can design
Flat tube in a row can also be two combs.In present embodiment, using 2 combs, form exhaust gas channel.
In described freon preheated zone 33, motor exhaust becomes counter-flow arrangement with liquid freon；In described fluorine
Superheat region 32 is evaporated in Leon, and the motor exhaust of high temperature and freon are in down current arrangement.
It is additionally provided with hydraulic barrier 19 in described freon evaporation superheat region 32.Described hydraulic barrier 19 is two
Block, is respectively placed in top and the bottom in this region, forms labyrinth passage.Described hydraulic barrier 19 is near the described first cooling
Sap cavity room 31 is arranged.In this region because the temperature of tail gas is very high, by hydraulic barrier, can improve freon flow velocity and
Heat exchange coefficient, thus reducing the surface temperature of the metal wall such as flat tube and the second secondary mainboard, reducing thermal expansion denaturation and keeping away
Exempt from the thermal cracking of freon and high-temperature metal wall.
The distance between described inlet end mainboard 16 and inlet end pair mainboard 17 are 20～30mm；Described outlet side master
The distance between plate 24 and outlet side pair mainboard 23 are 20～30mm.
Place ripple type enhanced heat transfer fin 20 inside described flat tube 15, flow-disturbing within pipe for the fluid can be improved,
Destroy fluid boundary layer, realize augmentation of heat transfer purpose, and small product size and weight can be reduced.This fin belongs to non-discontinuous form wing
Piece, can effectively improve heat transfer, be unfavorable for the accumulation in metal surface of carbon distribution simultaneously.
Place serrated fin 21 between the heat exchange area of freon, adjacent flat tube 15, to realize in augmentation of heat transfer
Meanwhile, improve freon side compressive resistance.On described freon preheated zone 33, the serrated fin 21 between flat tube 15
Import and export, with freon, the diagonal angle being connected and cut out two chamferings 25, the flow uniformity of refrigerant freon can be improved.
The utility model adopts corrugated tube type structure in version, using wing between mainboard, secondary mainboard, flat tube and pipe
Piece, realizes the assembling of explosive evaporation device fuse by Welding technique.Because the utility model is suitable for engine adverse circumstances
Requirement, whole machine selects to adopt stainless steel material, and fuse 3 welding procedure adopts nickel-based brazing technique, to avoid other to weld material
The acid gas component etching problem of material.Fuse 3 is connected by argon arc welding with outside thin-walled metal-back 5, realizes each heat transfer zone
The independent heat exchange in domain and flowing.
The utility model has three tunnel medium loop, i.e. tail gas loop, coolant circuit and freon loop.
In tail gas loop, the high-temperature tail gas discharged from engine enter from elastic corrugated metal tube 1, through inlet end chamber
2nd, flat tube 15 and outlet side chamber 22, discharge from tail gas adpting flange 6.
Coolant circuit has two loops positioned at fuse two ends.In the first loop, coolant is from the first coolant
Import 10 enters the first coolant heat exchange area 34, then discharges from the first cooling liquid outlet 9.In the second loop, cool down
Liquid enters the second coolant heat exchange area 31 from the second cooling liquid inlet 8, then discharges from the second cooling liquid outlet 7.
In freon loop, liquid freon enters freon preheated zone 33 from the first freon import 14, at this
Carry out heat exchange with the tail gas in flat tube in region, export 13 from the first freon after forming vehicle repair major freon and discharge again
Enter freon evaporation superheat region 32 from the second freon import 11.In the region, in vehicle repair major freon and flat tube
High-temperature tail gas carry out further heat exchange and produce gasification, gaseous freon exports 7 from the second freon.
It is understood that above-described embodiment is to explanation of the present utility model, rather than to of the present utility model
Limit, the utility model in any spirit without departing from the utility model is created, and each falls within protection of the present utility model
Within the scope of.
Claims (8)
1. a kind of evaporimeter recycling egr for motor exhaust, including the elastic corrugated metal tube (1) being sequentially connected, enters
Gas end chamber (2), thin-wall metal shell (5), outlet side chamber (22) and tail gas adpting flange (6), described thin-wall metal shell (5)
Inside it is provided with fuse (3), described fuse (3) includes at least one rows of flat pipes (15), inlet end mainboard (16), inlet end pair mainboard
(17), middle pair mainboard (18), outlet side pair mainboard (23) and outlet side mainboard (24), the two ends of described flat tube (15) respectively with
Described inlet end chamber (2) and outlet side chamber (22) UNICOM are it is characterised in that described thin-wall metal shell (5) and flat tube
(15) heat exchange area between is divided into the first coolant between outlet side mainboard (24) and outlet side pair mainboard (23)
Freon preheated zone (33) between heat exchange area (34), outlet side pair mainboard (23) and middle pair mainboard (18), centre
Freon evaporation superheat region (32) between secondary mainboard (18) and inlet end pair mainboard (17) and inlet end pair mainboard (17)
The second coolant heat exchange area (31) and inlet end mainboard (16) between；On described thin-wall metal shell (5) is above corresponding
State be respectively equipped with each region the first cooling liquid inlet (10), the first cooling liquid outlet (9), the first freon import (14),
One freon outlet (13), the second freon import (11), the second freon outlet (7), the second cooling liquid inlet (8) and second
Cooling liquid outlet (7)；The first described freon outlet (13) and the second freon import (11) UNICOM.
2. a kind of as claimed in claim 1 recycle the evaporimeter of egr it is characterised in that described for motor exhaust
Freon preheated zone (33), motor exhaust becomes counter-flow arrangement with liquid freon；Evaporate overheated zone in described freon
Domain (32), the motor exhaust of high temperature and freon are in down current arrangement.
3. a kind of as claimed in claim 1 recycle the evaporimeter of egr it is characterised in that described for motor exhaust
It is additionally provided with hydraulic barrier (19) in freon evaporation superheat region (32).
4. a kind of as claimed in claim 3 recycle the evaporimeter of egr it is characterised in that described folding for motor exhaust
Stream baffle plate (19) is two pieces, is respectively placed in top and the bottom in this region, forms labyrinth passage.
5. a kind of as claimed in claim 4 recycle the evaporimeter of egr it is characterised in that described folding for motor exhaust
Stream baffle plate (19) is near described second coolant heat exchange area (31) setting.
6. as claimed in claim 1 a kind of for motor exhaust recycle egr evaporimeter it is characterised in that described enters
The distance between gas end mainboard (16) and inlet end pair mainboard (17) are 20～30mm；Described outlet side mainboard (24) and going out
The distance between gas end pair mainboard (23) is 20～30mm.
7. a kind of as claimed in claim 1 recycle the evaporimeter of egr it is characterised in that in freon for motor exhaust
Heat exchange area, between flat tube (15) and flat tube (15) place serrated fin (21).
8. a kind of as claimed in claim 7 recycle the evaporimeter of egr it is characterised in that described for motor exhaust
Freon preheated zone (33), the upper diagonal angle being connected of being imported and exported with freon of the serrated fin (21) between flat tube (15) is cut out
Cut two chamferings (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521001777.6U CN205895438U (en) | 2015-12-04 | 2015-12-04 | A evaporimeter for engine exhaust EGR that recycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521001777.6U CN205895438U (en) | 2015-12-04 | 2015-12-04 | A evaporimeter for engine exhaust EGR that recycles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205895438U true CN205895438U (en) | 2017-01-18 |
Family
ID=57764538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521001777.6U Withdrawn - After Issue CN205895438U (en) | 2015-12-04 | 2015-12-04 | A evaporimeter for engine exhaust EGR that recycles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205895438U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422328A (en) * | 2015-12-04 | 2016-03-23 | 浙江银轮机械股份有限公司 | Evaporator for engine exhaust gas recirculation (EGR) |
| CN106705707A (en) * | 2017-02-22 | 2017-05-24 | 浙江银轮机械股份有限公司 | Heat regenerator for extended-range electric vehicle micro gas turbine |
| CN113624042A (en) * | 2021-07-28 | 2021-11-09 | 祥博传热科技股份有限公司 | Phase-change cooling heat exchanger |
-
2015
- 2015-12-04 CN CN201521001777.6U patent/CN205895438U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422328A (en) * | 2015-12-04 | 2016-03-23 | 浙江银轮机械股份有限公司 | Evaporator for engine exhaust gas recirculation (EGR) |
| CN106705707A (en) * | 2017-02-22 | 2017-05-24 | 浙江银轮机械股份有限公司 | Heat regenerator for extended-range electric vehicle micro gas turbine |
| CN113624042A (en) * | 2021-07-28 | 2021-11-09 | 祥博传热科技股份有限公司 | Phase-change cooling heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20180112 |