CN106870076B - Heat exchangers and thermoelectric conversion devices - Google Patents
Heat exchangers and thermoelectric conversion devices Download PDFInfo
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- CN106870076B CN106870076B CN201710121193.XA CN201710121193A CN106870076B CN 106870076 B CN106870076 B CN 106870076B CN 201710121193 A CN201710121193 A CN 201710121193A CN 106870076 B CN106870076 B CN 106870076B
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- spoiler
- drainage
- heat exchanger
- drainage plates
- plate
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 15
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 37
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 235000012149 noodles Nutrition 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
- F01N5/025—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明提供了一种换热效率高、能量利用率大的热交换器和热电转换装置。本发明所提供的热交换器，与发动机的尾气出口相连，其特征在于，包括：壳体，具有：进气口、排气口以及热交换腔体；和位于热交换腔体内，沿着从进气口向着排气口的方向依次设置的：两个第一引流板、两个第二引流板、第一阻流板、第二阻流板、扰流板组件、两个第三引流板以及两个第四引流板，其中，扰流板组件具有并排对称设置的两个扰流板组，每个扰流板组包括多个相互平行设置S型扰流板，两个第三引流板沿着方向看呈间距逐渐减小的八字形，两个第四引流板与两个第三引流板间隔一定间距设置，并且沿着方向看也呈间距逐渐减小的八字形，第四引流板比第三引流板更长。
The invention provides a heat exchanger and a thermoelectric conversion device with high heat exchange efficiency and high energy utilization rate. The heat exchanger provided by the present invention, which is connected to the exhaust gas outlet of the engine, is characterized in that it comprises: a casing having: an air inlet, an exhaust port and a heat exchange cavity; The air inlets are arranged in sequence toward the exhaust port: two first guide plates, two second guide plates, a first spoiler, a second spoiler, a spoiler assembly, and two third spoilers and two fourth spoilers, wherein the spoiler assembly has two spoiler groups symmetrically arranged side by side, each spoiler group includes a plurality of S-shaped spoilers arranged in parallel with each other, two third spoilers Seen along the direction, it has a figure-eight shape with a gradually decreasing spacing. The two fourth drainage plates are arranged at a certain distance from the two third drainage plates, and also have a figure-eight shape with a gradually decreasing spacing when viewed along the direction. The fourth drainage plate Longer than the third drain.
Description
Technical field
The present invention relates to a kind of heat exchanger and contain the thermoelectric conversion device of the heat exchanger.
Background technique
Orthodox car engine only has smaller part of energy to be cooled system consumption, remaining major part gross energy all with
The form of high-temp waste gas is discharged by automobile exhaust system, causes huge energy dissipation, the heat carried using vehicle exhaust
It carries out thermo-electric generation and comes the energy consumption that automobile can be effectively reduced to the power supply of the mobile units such as air-conditioning on automobile, reduction pair
The pollution of environment, and generate economic benefit.
In traditional thermo-electric generation heat-exchange device, for conduct tail gas heat quantity heat exchanger both sides temperature in
Between temperature uneven heating it is even, cause heat exchange efficiency low, so that the heat of tail gas can not be fully utilized, and flow-stopping plate
The back pressure that will increase engine is set also, the efficiency of engine exhaust is hindered, and engine fuel economy is declined.
Summary of the invention
The present invention is to carry out in order to solve the above problems, and it is an object of the present invention to provide a kind of heat exchange efficiency is high, energy utilization
The big heat exchanger of rate and the thermoelectric conversion device containing the heat exchanger.
The present invention to achieve the goals above, uses following scheme.
<heat exchanger>
The present invention provides a kind of heat exchanger, is connected with the offgas outlet of engine characterized by comprising shell, tool
Have: by offgas outlet outflow tail gas introduce the intracorporal air inlet of shell, by after heat exchange tail gas discharge exhaust outlet, and be located at into
Heat exchange cavity between port and exhaust outlet；Be located at heat exchange chamber body in, along the direction from air inlet towards exhaust outlet
It sets gradually: two the first drainage plates, two the second drainage plates, the first spoiler, the second spoiler, spoiler components, two
A third drainage plate and two the 4th drainage plates, wherein two the first drainage plates are seen along direction to be gradually increased in spacing
Herringbone, two the second drainage plates and two the first drainage plates are spaced in intervals setting, and between seeing along direction and being also in
Away from the herringbone being gradually increased, the second drainage plate is longer than the first drainage plate, and the setting of the first spoiler is drained at two second
It is opposite with air inlet to and there are multiple ventholes, the second spoiler is also opposite with air inlet to and having between plate
Multiple ventholes, length are longer than the first spoiler, and spoiler component has two flow-disturbing board groups of symmetrically arranged side by side, each
Flow-disturbing board group includes multiple S type spoilers arranged in parallel, and two third drainage plates are seen along direction and are gradually reduced in spacing
Splayed, two the 4th drainage plates and two third drainage plates are spaced in intervals setting, and between seeing along direction and being also in
Away from the splayed being gradually reduced, the 4th drainage plate is longer than third drainage plate.
Heat exchanger according to the present invention can also have the following features: and draw the setting of cavity there are two first
Flowing plate, two the second drainage plates, the first spoiler and the second spoiler region be denoted as front area, spoiler will be provided with
The region of component is denoted as central region, and by setting, there are two the regions of third drainage plate and two the 4th drainage plates to be denoted as rear area
The area of front area, central region, Background Region is successively denoted as S1, S2, S3, S1:S2:S3=1:4~7:1 by domain.
Heat exchanger according to the present invention can also have the following features: the angle between two the first drainage plates
It is 120 °, the angle between two the second drainage plates is also 120 °, and the angle between two third drainage plates is 130 °, two
Angle between four drainage plates is 130 °, and the length of the first drainage plate and the second drainage plate is denoted as L1, L2, L1:L2=respectively
2:3~5:2.
Heat exchanger according to the present invention, can also have the following features: by the top of two the first drainage plates it
Between spacing be denoted as B1, the spacing between the top of two the first drainage plates is denoted as B2, B1:B2=3:1~2.
Heat exchanger according to the present invention, can also have the following features: by the first drainage plate, the second drainage plate,
The shortest distance of first spoiler and the second spoiler to air inlet is denoted as D1, D2, D3, D4 respectively, D1:D2:D3:D4=5:
8~12:15~19:20.
Heat exchanger according to the present invention, can also have the following features: each S type spoiler includes three transverse directions
Plate and two vertical plates, the S type is around the side of opening second spoiler of direction of flowing plate, another opening direction exhaust
Mouthful.
Heat exchanger according to the present invention can also have the following features: in each flow-disturbing board group, ecto-entad S
The height of type spoiler gradually increases, and the difference in height between adjacent two pieces of S type spoiler is 4.5%~15%.
Heat exchanger according to the present invention can also have the following features: in each flow-disturbing board group, ecto-entad S
The height of type spoiler incremented by successively 10%.
Heat exchanger according to the present invention, can also have the following features: will be on the outermost side in S type spoiler
Transverse plate is as the first transverse plate, in each flow-disturbing board group, is located at outermost first transverse plate longest, the first of secondary outer layer is horizontal
Shorter than outermost to plate, the first transverse plate of internal layer is shorter than secondary outer layer.
<thermoelectric conversion device>
The present invention also provides a kind of thermoelectric conversion devices characterized by comprising heat exchanger, the tail with engine
Gas outlet is connected；Thermo-electric device, fitting are arranged on the outer surface of heat exchanger；And cooler, the cold end with thermo-electric device
Be in contact setting, wherein heat exchanger is heat exchanger described in above<heat exchanger>.
The action and effect of invention
Heat exchanger and thermoelectric conversion device according to the present invention because in heat exchange chamber body, along from air inlet to
The direction of exhaust outlet set gradually two the first drainage plates and two the second drainage plates, the first choked flow in herringbone
Plate, the second spoiler, spoiler component, two third drainage plates and two the 4th drainage plates in herringbone, and disturb
Flowing plate component has two flow-disturbing board groups of symmetrically arranged side by side, and each flow-disturbing board group is by multiple S type flow-disturbings arranged in parallel
Plate is constituted, and such structure can guide tail gas first to flow to shell both sides, then is gradually spread to centre, to ensure that tail gas energy
Enough sufficiently diffusions, avoid housing mid-section point temperature excessively high, guarantee that the casing surface temperature of heat exchanger is uniform, improve heat exchange
The heat transmitting of device and heat exchange efficiency, enable thermoelectric conversion device to be more fully heated, therefore on the one hand can be improved total hair
Electricity, and then improve the utilization rate of residual heat of tail gas of automobile；On the other hand, it ensure that the gas phase of tail gas in a heat exchanger is smooth
Degree, reduces the back pressure of engine, improves the performance of engine.
Detailed description of the invention
Fig. 1 is the external structure schematic diagram of heat exchanger of the present invention；
Fig. 2 is the schematic diagram of internal structure of heat exchanger of the present invention；
Fig. 3 is the internal structure oblique view of heat exchanger of the present invention；
Fig. 4 is the structural schematic diagram of flow-disturbing board group of the present invention.
In above-mentioned Fig. 1 to 4, each part numbers are as follows:
10. heat exchanger: 11. shells, 12. first drainage plates, 13. second drainage plates, 14. first spoilers, 15. second
Spoiler, 16. spoiler components, 17. third drainage plates, 18. the 4th drainage plates；
111. air inlet, 112. exhaust outlets, 113. heat exchange cavitys；
Z1. front, the middle part Z2., the rear portion Z3.；
161. flow-disturbing board groups, 1611.S type spoiler: the first transverse plate of 1611a., the first vertical plate of 1611b., 1611c.
Second transverse plate, the second vertical plate of 1611d., 1611e. third transverse plate.
Specific embodiment
Heat exchanger according to the present invention and thermoelectric conversion device are elaborated referring to the drawings.
<embodiment>
In the present embodiment, thermoelectric conversion device is connected with the exhaust outlet of automobile engine, generates to engine combustion
High-temperature tail gas carries out thermal energy recycling, and the thermal energy of recycling is converted into electric energy and supplies vehicle-mounted electricity system use.Heat to electricity conversion
Device includes: heat exchanger, thermo-electric device, cooler.Heat exchanger is used to the thermal energy of high-temperature tail gas passing to thermo-electric device.
The hot face of thermo-electric device and the appearance of heat exchanger fit and can absorb thermal energy, and huyashi-chuuka (cold chinese-style noodles) is in contact with cooler, to pass through
The temperature difference of hot face and huyashi-chuuka (cold chinese-style noodles) produces electricl energy.Thermo-electric device includes multiple electrothermal modules, and the fitting of these electrothermal modules is arranged in heat
In the upper and lower surface of exchanger.Cooler includes multiple rectangular tanks, and each rectangular tank and the huyashi-chuuka (cold chinese-style noodles) of thermo-electric device are close
Fitting contact.
As illustrated in fig. 1 and 2, heat exchanger 10 include: 11, two the first drainage plates of shell, 12, two the second drainage plates 13,
First spoiler 14, the second spoiler 15,16, two third drainage plates 17 of spoiler component and two the 4th drainage plates 18.
Shell 11 has air inlet 111, exhaust outlet 112 and heat exchange cavity 113.The tail of air inlet 111 and engine
Gas outlet is connected, and the tail gas for flowing out offgas outlet introduces in heat exchange cavity 113；Exhaust outlet 112 and vehicle exhaust
Processor is connected, for the tail gas discharge after exchanging heat.Heat exchange cavity 113 be located at air inlet 111 and exhaust outlet 112 it
Between.
As shown in Fig. 2, dividing heat exchange cavity 113 for front Z1, middle part Z2 and rear portion Z3.Two corners of front Z1 are circle
Arc, this is to guarantee that sufficiently diffusion can be drained after tail gas enters to both sides.Middle part Z2 is cuboid, is easily installed heat
Electric module.Two corners of rear portion Z3 be also it is arc-shaped, this is to guarantee that tail gas can be swimmingly discharged.
Two the first drainage plates, 12, two the second drainage plates 13, the first spoiler 14, the second spoiler 15, flow-disturbing board group
16, two third drainage plates 17 of part and two the 4th drainage plates 18 are fixed in heat exchange cavity 113, and along from into
The direction (i.e., direction shown in arrow F in Fig. 2) of port 111 towards exhaust outlet 112 is sequentially arranged.Specifically, two first
12, two the second drainage plates 13 of drainage plate, the first spoiler 14 and the second spoiler 15 are arranged on heat exchange cavity 113
Front Z1, spoiler component 16 are arranged on the middle part Z2 of heat exchange cavity 113, and two third drainage plates 17 and two the 4th draw
Flowing plate 18 is arranged on the rear portion Z3 of heat exchange cavity 113.The cross-sectional area of front Z1, middle part Z1, rear portion Z3 are successively denoted as
S1, S2, S3, S1:S2:S3=1:4~7:1 are most ratio of greater inequality 1:5:1 in the present embodiment.
Two the first drainage plates 12 see the herringbone being gradually increased in spacing along direction shown in arrow F.This implementation
In example, the angle between two the first drainage plates 12 is 120 °.
Two the second drainage plates 13 are parallel to each other with two the first drainage plates 12, and are spaced in intervals setting, along arrow
Direction shown in head F sees that the herringbone being also gradually increased in spacing, 13 to the first drainage plate 12 of the second drainage plate are longer.This reality
It applies in example, the angle between two the second drainage plates 13 is also 120 °.
Spacing between the top of two the first drainage plates 12 is denoted as B1, between the top of two the second drainage plates between
Away from being denoted as B2, B1:B2=3:1~2 are most ratio of greater inequality 3:1 in the present embodiment.
First spoiler 14 is located between two the second drainage plates 13, opposite to and uniformly multiple logical with air inlet 111
Stomata 14a.In the present embodiment, a venthole 14a is set every 50mm on the first spoiler 14.
Second spoiler 15 is parallel with the first spoiler 14, and and equipped with multiple venthole 15a, length is than first
Spoiler 14 is longer.In the present embodiment, a venthole 15a is set every 50mm on the second spoiler 15.
By the length of above-mentioned first drainage plate 12, the second drainage plate 13, the first spoiler 14 and the second spoiler 15 point
It is not denoted as L1, L2, L3, L4, L1:L2:L3:L4=2:3~5:2:5~8 are most ratio of greater inequality 1:2:1:3 in the present embodiment；B1:B2:
L4=3:1~2:6~12 are most ratio of greater inequality 3:1:9 in the present embodiment；By the first drainage plate 12, the second drainage plate 13, the first choked flow
The shortest distance of plate 14 and the second spoiler 15 to air inlet is denoted as D1, D2, D3, D4 respectively, and D1:D2:D3:D4=5:8~
12:15~19:20 is most ratio of greater inequality 5:10:16:18 in the present embodiment；First drainage plate 12, the second drainage plate 13, the first choked flow
The height of plate 14 and the second spoiler 15 is equal, is the 5/9 of entire 11 thickness of shell.
There are two flow-disturbing board groups 161 for the tool of spoiler component 16, the two flow-disturbing board groups 161 are in heat exchange cavity 113
Mandrel is symmetry axis, symmetrical setting, and the structure of two flow-disturbing board groups 161 is identical, below only with position in Fig. 2 and 3
It is described in detail for the flow-disturbing board group 161 of lower section.
As shown in Figures 2 and 3, flow-disturbing board group 161 includes multiple S type spoilers 1611 arranged in parallel, two neighboring S
Type spoiler 1611 is spaced apart from each other certain distance to opposite direction, in the present embodiment, between two neighboring S type spoiler most
For small―gap suture in 5mm or more, outer interlamellar spacing is big, and for middle ware away from small, such line space design is to allow the flow to stop in centre
The longer time is stayed, and housing central section is allowed to be uniformly heated.
Further, in flow-disturbing board group 161, the height of ecto-entad, S type spoiler 1611 is gradually increased, adjacent two pieces of S
Difference in height between type spoiler 1611 is 4.5%~15%.It is that optimal height is poor: S type spoiler 1611 in the present embodiment
Highly incremented by successively 10%, the height of innermost layer S type spoiler 1611 is outermost 2.4 times, and outermost height with
The height of second spoiler 15 is equal, and the height of innermost layer is the 2/3 of entire 11 thickness of shell.Height is had by the way of being incremented by
Housing central section is drained into from edges at two ends conducive to air-flow, so that middle part is uniformly heated, improves waste gas utilization efficiency.
In the present embodiment, for the ease of clearly checking the structure of S type spoiler 1611, not by all S types in Fig. 4
Spoiler 1611 is all shown, and only shows five S type spoilers 1611.As shown in Figures 2 to 4, each S type spoiler
1611 include three transverse plates and two vertical plates, according to sequence (the i.e., sequence in figure from bottom to up) from outside to inside, S type
Spoiler 1611 is successively by the first transverse plate 1611a, the first vertical plate 1611b, the second transverse plate 1611c, the second vertical plate
1611d and third transverse plate 1611e, which is connected, to be formed.First transverse plate 1611a, the first vertical plate 1611b and second are laterally
Plate 1611c defines first opening of the S type around flowing plate 1611, the side of the first opening second spoiler 15 of direction；Second is horizontal
Second opening of the S type around flowing plate 1611 is defined to plate 1611c, the second vertical plate 1611d and third transverse plate 1611e, it should
Second is open towards exhaust outlet 112.Such opening direction facilitates better flow-disturbing and drainage.
In addition, being located at outermost first transverse plate 1611a longest, the first of secondary outer layer is laterally in flow-disturbing board group 161
Plate 1611a is shorter than outermost, and the first transverse plate 1611a of internal layer is shorter than secondary outer layer, and such design can make tail gas stream
After entering, the outer layer of heat exchange chamber 113 is flowed at first, is gradually being flowed into middle layer, to preferably drain to tail gas, is being made
Middle part is uniformly heated and sufficiently, further improves waste gas utilization efficiency.
As shown in Figures 2 and 3, two third drainage plates 17 see eight be gradually reduced in spacing along direction shown in arrow F
Font.In the present embodiment, the angle between two third drainage plates 17 is 130 °.
Two the 4th drainage plates 18 are parallel to each other with two third drainage plates 17, and are spaced in intervals setting, along arrow
The splayed being also gradually reduced in spacing is seen in direction shown in head F, and the 4th drainage plate 18 is longer than third drainage plate 17.This implementation
In example, the angle between two third drainage plates 17 is also 130 °.
Two the 4th drainage plates 18 and two third drainage plates 17 are spaced in intervals setting, and along shown in arrow F
Direction see the splayed being also gradually reduced in spacing, the 4th drainage plate 18 is longer than third drainage plate 17.
Spacing between the top of two third drainage plates 17 is denoted as B3, between the top of two the 4th drainage plates 18
Spacing is denoted as B4, B3:B4=1:1~1.5, is most ratio of greater inequality 1:1 in the present embodiment.By third drainage plate 17 and the 4th drainage plate 18
Length be denoted as L5 and L6 respectively, L5:L6=1:3~5 are most ratio of greater inequality 1:3 in the present embodiment；By third drainage plate 17 and the 4th
The shortest distance of drainage plate 18 to air inlet is denoted as D5, D6 respectively, D5:D6=11:4~9, is most ratio of greater inequality 11 in the present embodiment:
5；The height of third drainage plate 17 and the 4th drainage plate 18 is equal, is the 5/9 of entire 11 thickness of shell.
In the present embodiment, as shown in Figures 1 to 4, engine operation generate a large amount of high-temperature tail gas, by air inlet 111 into
Enter in heat exchange cavity 113, then shunted by two the first drainage plates 12, is then drawn by two the second drainage plates 13
Stream, then shunts through the first spoiler 14 and 15 choked flow of the second spoiler and further, so that tail gas is first to both sides diffusion point
Stream, then gradually spread to centre, and then flow into spoiler component 16, it is disturbed by spoiler component 16, then, tail gas flows again
To two third drainage plates 17 and two the 4th drainage plates 18, by third drainage plate 17 and two the 4th drainage plates 18 to tail gas
It further shunts and drains.Finally it is discharged from exhaust outlet 112.
The action and effect of embodiment
According to the heat exchanger and thermoelectric conversion device of the present embodiment, because high-temperature tail gas enters the shell of heat exchanger
Afterwards, the first drainage plate can shunt tail gas, make tail gas Uniform Flow, avoid local temperature excessively high, then the second drainage
Plate again drains tail gas to both sides, to guarantee the gas phase flatness of tail gas in a heat exchanger, reduces the back in heat exchanger
Pressure, then by the appropriate stop portions air-flow of the first spoiler, shunted so that air-flow is first spread to both sides, then gradually spread to centre,
With ensure shell front surface can thermally equivalent, then flow into spoiler component in tail gas, disturbed by spoiler
It is dynamic, so that the heat of tail gas is more fully spread and is transferred uniformly into the outer surface of entire shell, it is another
Aspect makes tail gas extended residence time, so that the heat transfer time of the outer surface of shell increases, finally, being drawn again by two thirds
Flowing plate and two the 4th drainage plates are shunted and are drained to tail gas, slow down tail gas in the flow velocity of rear, to ensure shell
The temperature at rear portion, so that rear full and uniform can also conduct heat, and when further increasing the heat transfer of entire shell
Between.In this way, not only making tail gas spread and flow more uniform by being shunted, being drained and being disturbed to tail gas, additionally it is possible to
The back pressure of engine is effectively reduced, thus in the heat transmitting and heat exchange efficiency that improve heat exchanger, and improve car tail
While the utilization rate of gas waste heat, additionally it is possible to effectively promote the performance of engine.
Above embodiments are only the illustration done to technical solution of the present invention.Heat exchanger according to the present invention
Described structure in the embodiment above is not merely defined in thermoelectric conversion device, but defined by claim
Subject to range.Any modify or supplement that those skilled in the art of the invention are done on the basis of the embodiment equivalent is replaced
It changes, all in scope of the present invention.
Claims (9)
1. a kind of heat exchanger (10), is connected with the offgas outlet of engine characterized by comprising
Shell (11), comprising: the tail gas for flowing out the offgas outlet introduces the air inlet (111) in the shell (11), will
The exhaust outlet (112) of tail gas discharge after heat exchange, and the heat between the air inlet (111) and exhaust outlet (112)
It exchanges cavity (113)；With
In the heat exchange cavity (113), along from air inlet (111) towards the direction of the exhaust outlet (112) successively
Be arranged: two the first drainage plates (12), the first spoiler (14), the second spoiler (15), are disturbed at two the second drainage plates (13)
Flowing plate component (16), two third drainage plates (17) and two the 4th drainage plates (18),
Wherein, the heat exchange cavity (113) is divided into front (Z1), middle part (Z2) and rear portion (Z3), described two first draw
Flowing plate (12), described two second drainage plates (13), first spoiler (14) and second spoiler (15) are set
It sets at the front (Z1), the spoiler component (16) is arranged on the middle part (Z2), described two third drainage plates
(17) it is arranged on the rear portion (Z3) with described two 4th drainage plates (18), the front (Z1) and the rear portion (Z3's)
Two corners be all it is arc-shaped, the middle part (Z2) be cuboid,
Described two first drainage plates (12) see the herringbone being gradually increased in spacing along the direction,
Described two second drainage plates (13) and described two first drainage plates (12) are spaced in intervals setting, and along institute
It states direction and sees the herringbone being also gradually increased in spacing, second drainage plate (13) is more than first drainage plate (12)
It is long,
First spoiler (14) is arranged between two second drainage plates (13), opposite with the air inlet (111)
To, and there are multiple ventholes,
Second spoiler (15) is also opposite to and having multiple ventholes, described in length ratio with the air inlet (111)
First spoiler (14) is longer,
The spoiler component (16) has two flow-disturbing board groups (161) of symmetrically arranged side by side, each flow-disturbing board group
It (161) include multiple S type spoilers (1611) arranged in parallel,
Described two third drainage plates (17) see the splayed being gradually reduced in spacing along the direction,
Described two 4th drainage plates (18) and described two third drainage plates (17) are spaced in intervals setting, and along institute
It states direction and sees the splayed being also gradually reduced in spacing, the 4th drainage plate (18) is longer than the third drainage plate (17),
The S type is around one of flowing plate opening towards the side of second spoiler (15), another opening is towards the row
Port (112),
In each flow-disturbing board group (161), the height of S type spoiler (1611) described in ecto-entad is gradually increased, and phase
Difference in height between adjacent two pieces of S type spoilers (1611) is 4.5%~15%.
2. heat exchanger (10) according to claim 1, it is characterised in that:
Wherein, the cross-sectional area of the front (Z1), the middle part (Z2), the rear portion (Z3) are successively denoted as S1, S2, S3,
Then S1:S2:S3=1:4~7:1.
3. heat exchanger (10) according to claim 1, it is characterised in that:
Wherein, the angle between described two first drainage plates (12) is 120 °, between described two second drainage plates (13)
Angle is also 120 °, and the angle between described two third drainage plates (17) is 130 °, described two 4th drainage plates (18) it
Between angle be 130 °,
The length of first drainage plate (12) and second drainage plate (13) is denoted as L1, L2 respectively, L1:L2=2:3~
5:2。
4. heat exchanger (10) according to claim 1, it is characterised in that:
Wherein, the spacing between the top of two first drainage plates (12) is denoted as B1, two first drainage plates
(12) the spacing between top is denoted as B2, B1:B2=3:1~2.
5. heat exchanger (10) according to claim 1, it is characterised in that:
Wherein, by first drainage plate (12), second drainage plate (13), first spoiler (14) and described
The shortest distance of two spoilers (15) to the air inlet (111) is denoted as D1, D2, D3, D4 respectively, and D1:D2:D3:D4=5:8~
12:15~19:20.
6. heat exchanger (10) according to claim 1, it is characterised in that:
Wherein, each S type spoiler (1611) includes three transverse plates and two vertical plates.
7. heat exchanger (10) according to claim 1, it is characterised in that:
Wherein, in each flow-disturbing board group (161), the height of S type spoiler (1611) described in ecto-entad is incremented by successively
10%.
8. heat exchanger (10) according to claim 7, it is characterised in that:
Wherein, using transverse plate on the outermost side in the S type spoiler (1611) as the first transverse plate (1611a),
In each flow-disturbing board group (161), it is located at outermost first transverse plate (1611a) longest, the institute of secondary outer layer
State that the first transverse plate (1611a) is shorter than outermost, first transverse plate (1611a) of internal layer is shorter than secondary outer layer.
9. a kind of thermoelectric conversion device characterized by comprising
Heat exchanger (10), is connected with the offgas outlet of engine；
Thermo-electric device, fitting are arranged on the outer surface of the heat exchanger (10)；And
Cooler, be in contact setting with the cold end of the thermo-electric device,
Wherein, the heat exchanger (10) is heat exchanger (10) described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121193.XA CN106870076B (en) | 2017-03-02 | 2017-03-02 | Heat exchangers and thermoelectric conversion devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121193.XA CN106870076B (en) | 2017-03-02 | 2017-03-02 | Heat exchangers and thermoelectric conversion devices |
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| Publication Number | Publication Date |
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| CN106870076A CN106870076A (en) | 2017-06-20 |
| CN106870076B true CN106870076B (en) | 2019-04-09 |
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| CN109340805B (en) * | 2018-10-25 | 2024-06-04 | 四川杰瑞恒日天然气工程有限公司 | Cascade comprehensive utilization device based on flue gas waste heat of gas generator |
| RU191662U1 (en) * | 2019-06-13 | 2019-08-15 | Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) | The liquid heat exchanger of the thermoelectric module for heating air in agricultural premises |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147879A (en) * | 2013-03-12 | 2013-06-12 | 武汉理工大学 | Power generation heat exchanger with automobile tail gas temperature difference |
| CN104534902A (en) * | 2014-12-30 | 2015-04-22 | 黑龙江国德节能服务有限公司 | Heat through-flow S-type efficient and anticorrosion heat exchanger and heat exchange method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100649597B1 (en) * | 2004-12-10 | 2006-11-28 | 엘지전자 주식회사 | Exhaust Gas Heat Exchanger of Cogeneration System |
| KR101191076B1 (en) * | 2010-08-17 | 2012-10-16 | 충북대학교 산학협력단 | An Apparatus for thermoelectric generator using exhaust gas |
| CN106150623B (en) * | 2016-06-29 | 2019-01-25 | 杭州悦山科技有限公司 | The automobile exhaust gas purifying installation that can be heated |
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2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147879A (en) * | 2013-03-12 | 2013-06-12 | 武汉理工大学 | Power generation heat exchanger with automobile tail gas temperature difference |
| CN104534902A (en) * | 2014-12-30 | 2015-04-22 | 黑龙江国德节能服务有限公司 | Heat through-flow S-type efficient and anticorrosion heat exchanger and heat exchange method |
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