CN204646386U - Efficient automobile tail gas thermoelectricity recovering device - Google Patents
Efficient automobile tail gas thermoelectricity recovering device Download PDFInfo
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- CN204646386U CN204646386U CN201520310002.0U CN201520310002U CN204646386U CN 204646386 U CN204646386 U CN 204646386U CN 201520310002 U CN201520310002 U CN 201520310002U CN 204646386 U CN204646386 U CN 204646386U
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Abstract
The utility model relates to a kind of efficient automobile tail gas thermoelectricity recovering device, it is characterized in that: at metal foam, polyamide pad, stainless steel outlet pipe, hot junction ring aluminum alloy hot plate, cold junction ring aluminum alloy hot plate radial side arranges multiple straight hole, circle equiangularly calibration cutting cylindrical hole on the thin-walled of cold junction ring aluminum alloy hot plate, high-temperature heat pipe one end contacts with tail gas through stainless steel outlet pipe, the other end is arranged in the circular hole of hot junction ring aluminum alloy hot plate, middle Cryo Heat Tube one end is placed in the circular hole of cold junction ring aluminum alloy hot plate, middle part is through the cylindrical hole of polyamide pad, the other end is placed in the circular hole of metal foam, cooling water car is passed into by water inlet, flow out from water outlet.Its structure is simple, and in whole thermoelectricity recovering device, do not have moving member, cooling system and exhaust system are fully isolated, and improve the reliability of thermoelectricity recovery operation process.
Description
Technical field
The utility model relates to a kind of efficient automobile tail gas thermoelectricity recovering device, is be applied on car air outlet duct system, is applicable to the commercial minibus of fuel economy difference, the middle and high end vehicle such as cross-country and small-sized pick up in city.
Background technique
Since the global energy crisis of 20 century 70, energy problem is subject to countries in the world most attention, and each economic giant all endeavours to seize energy market simultaneously, also greatly strengthens the attention degree of power-saving technology.Along with the raising of people's living standard, automobile pollution is increasing, and the ratio of energy source of car consumption shared by total energy consumes is more and more higher, and vehicle energy saving problem is more and more subject to various countries and pays close attention to.Along with developing rapidly of Domestic Automotive Industry, improve automotive fuel effective rate of utilization and in China, there is prior strategic importance with minimizing environmental pollution.Investigation shows, the automotive fuel energy discharged that burns only has about 1/3rd to be used effectively, and its complementary energy is is all scattered and disappeared or is discharged in air, causes energy significant wastage, also brings poor environment impact.The energy of discharging outside car with waste heat form accounts for 55%-70% (diesel engine) or the 80%-70% (petrol engine) of burning total energy, mainly comprises heat that recirculated cooling water takes away and the heat that tail gas is taken away.Therefore these automobile waste heat effectively being utilized is realize vehicle energy saving, reduces the effective way that energy source of car consumes.
Pyroelectric technology thermoelectric conversion element bag is attached to the heat such as outlet pipe, engine radiating sheet to concentrate on the parts of discharge, once vehicle starts normal traveling, the heat that outlet pipe or radiating fin give out just can be absorbed by thermoelectric conversion element, and recovery is converted into electric energy, utilized by the electric energy of circuitry by conversion again, or be transferred to and in-vehicle secondary battery group stored and is used.
In recent years, the development of vehicular engine waste heat thermoelectric generation is very fast, and there are the report of achievement in research in domestic and international many colleges and universities, scientific research institution, motor corporation, and some testing apparatuss have carried out laboratory bench test, road test and endurance test.
Studies in China mechanism proposes the imagination utilizing exhaust energy to drive the generating of turbine drive electrical generators, and devises a kind of new equipment, and demonstrating the electric energy utilizing exhaust energy to drive turbine to send is enough to provide electric energy needed for automobilism.
U.S. Department of Energy has subsidized the research of diesel truck exhaust heat thermo-electric generation, and project personnel have carried out stand and roadway experiment on 250kW (335Hp) diesel engine.The direct current of the raw 30V/1kW of testing apparatus common property, cost is about 1000 dollars, reclaims the time about needing a year and a half.This pyroelectric technology equipment carries out train experiment on mixed power truck at present, show after having carried out 50,000 kilometers of tests, this system is by thermal transition electric energy, per gallon fuel oil can make the operating range of vehicle increase by one mile, save fuel oil and reach about one one-tenth, if this technology is applied on compact car, the distance travelled that can increase can be more.
Russian Federation's scientific center physics and energy project research institute, carried out the direct generation of electricity of High-cold regions lorry motor and the research of heating.Experimental subjects is 154kW motor, and auxiliary thermoelectric generator has flat and column type electrothermal module two kinds of forms, and produce 600W electric energy, can meet full vehicle electric, still have surplus heat supply cab heating.
Two core design of thermoelectricity conversion are the conversion efficiency of thermoelectric material self and the design of cold & heat source heat exchanger, do not have the design of pay abundant attention thermoelectric material two ends heat exchanger at the product of above-mentioned all designs.How in per unit volume or the upper fully effective heat-obtaining mode that improves of unit length (major part is arranged on outlet pipe axial flow direction) be the key issue determining the thermoelectric material that actual transmissions is upwards arranged to Jing, its problem relates to: the actual exhaust waste heat proportion utilized accounts for the proportion of total exhaust gas heat, real exchanger design can be transported to the heat on thermoelectric material surface and whether the temperature on economize on electricity surface is that optimum working temperature is interval, thermoelectricity heat exchanger at axis and Jing thermal expansion upwards and thermoelectric material from axis and Jing thermal expansion consistency problem upwards.Though above-mentioned all designs lay claim to relatively high power and export in thermoelectric heat generation system, reality does not all deeply consider that tail gas upwards passes thermal property and stability problem to heat exchanger structure at Jing, and long term life cannot ensure.Only can cannot enter actual production and practical stage as tentative product.
Summary of the invention
The purpose of this utility model is to provide a kind of efficient automobile tail gas thermoelectricity recovering device, its technical problem solved improves automobile fuel ecomomy, its inside is assembled by multiple heat exchanger minimum unit, do not influence each other each other between heat exchanger minimum unit, can according to actual power demand flexible assembling.The thermoelectric material improved by heat-pipe technology and form is combined, and is organized into a kind of controlled on Energy Transfer, namely by the heat transfer characteristic of heat pipe self, and ductile system-level thermoelectric converting unit on size and power.At limited bottom of car spatially, can with baffler Integration Design, form multifunctional replacement product.
The technical solution of the utility model is achieved in that a kind of efficient automobile tail gas thermoelectricity recovering device, is made up of annular heat electrical chip, high-temperature heat pipe, middle Cryo Heat Tube, metal foam, polyamide pad, the adiabatic circle of teflon, ultra-thin pyrographite pad, smart circuit collection and MPPT module, stainless steel outlet pipe, hot junction ring aluminum alloy hot plate, cold junction ring aluminum alloy hot plate and shell, it is characterized in that: stainless steel outlet pipe is installed between the cat cracker of air outlet duct system and baffler, increase thermoelectricity recovering device on it, at metal foam, polyamide pad, stainless steel outlet pipe, hot junction ring aluminum alloy hot plate, cold junction ring aluminum alloy hot plate radial side arranges multiple straight hole, circle equiangularly calibration cutting cylindrical hole on the thin-walled of cold junction ring aluminum alloy hot plate, heat pipe is placed in these cylindrical holes, high-temperature heat pipe one end contacts with tail gas through stainless steel outlet pipe, transition fit with it in the circular hole that the other end is arranged at hot junction ring aluminum alloy hot plate, transition fit with it in the circular hole that middle Cryo Heat Tube one end is placed in cold junction ring aluminum alloy hot plate, middle part is through the cylindrical hole of polyamide pad, transition fit with it in the circular hole that the other end is placed in metal foam, cooling water car is passed into by water inlet, flow out from water outlet.
Described hot junction ring aluminum alloy hot plate and cold junction ring aluminum alloy heat plate material are aluminium alloy plate, hot junction ring aluminum alloy hot plate center hole is equal with the external diameter of stainless steel outlet pipe, cold junction ring aluminum alloy hot plate center hole is equal with the external diameter that teflon thermal insulation is enclosed, wherein, after hot junction ring aluminum alloy hot plate and cold junction ring aluminum alloy hot plate adopt Dual-layer slotting thin aluminium alloy plate clamping heat pipe, brazing forms; Tail gas heat quantity is transferred to annular heat electrical chip by ring aluminum alloy hot plate, and then homalographic Heat transmission is given and cold junction ring aluminum alloy hot plate.
Described annular heat electrical chip and ring aluminum alloy hot plate and cold junction ring aluminum alloy hot plate are ring, the consistent size of its surface of contact, and stainless steel outlet pipe is the annular hollow shape stainless steel of good rigidly.
Described high-temperature heat pipe leads in the equal diameter through hole got out on ring aluminum alloy hot plate, ring surface is formed all-round Long pointer formula and arranges.
Described shell is arranged cooling water intake and water outlet, water intake is arranged at below device stem, and water outlet is placed in device upper rear by tube bundle, makes cooling water fully can fill metal foam; Intake-outlet is arranged on the least significant end of cooling system.
The adiabatic loop material of described teflon is the teflon that thermal resistance is very large, it is placed between outlet pipe and cold junction annulus aluminum alloy hot plate and conducts on cold junction annulus aluminum alloy hot plate with the high temperature intercepted on outlet pipe wall, thickness is that the ultra-thin pyrographite pad of 0.025mm is arranged in the cold and hot two ends of annular heat electrical chip respectively, to reduce the thermal contact resistance between itself and aluminium alloy plate, polyamide gasket material is the good and polyamide that thermal resistance is large of insulation, it is placed in foam metal and hot junction ring aluminum alloy hot plate, cold junction annulus aluminum alloy hot plate, between annular heat electrical chip, the electric current being used for intercepting thermoelectric chip generation imports cold and hot aluminum alloy plectane and forms thermal-protective coating.
Good effect of the present utility model is that the apparatus structure of this waste gas used heat recycling is simple, makes full use of the characteristic of heat pipe ' hot superconduction ', is absorbed by used heat in outlet pipe and carries out heat exchange to pipe is outer; In whole thermoelectricity recovering device, do not have moving member, cooling system and exhaust system are fully isolated, and improve the reliability of thermoelectricity recovery operation process.
Accompanying drawing explanation
Fig. 1 is the ssembly drawing of automobile exhaust pipe tail gas thermoelectricity recovering device.
Fig. 2 is the partial sectional view of the ssembly drawing of automobile exhaust pipe tail gas thermoelectricity recovering device.
Fig. 3 is the internal exchanger minimum unit ssembly drawing of automobile exhaust pipe tail gas thermoelectricity recovering device.
Fig. 4 is internal exchanger minimum unit partial sectional view.
Fig. 5 is internal exchanger minimum unit part figure.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described: as shown in Figures 1 to 4, a kind of efficient automobile tail gas thermoelectricity recovering device, is made up of annular heat electrical chip 1, high-temperature heat pipe 2, middle Cryo Heat Tube 3, metal foam 4, polyamide pad 5, teflon thermal insulation circle 6, ultra-thin pyrographite pad 7, smart circuit collection and MPPT module, stainless steel outlet pipe 9, hot junction ring aluminum alloy hot plate 10, cold junction ring aluminum alloy hot plate 11 and shell 8, it is characterized in that: stainless steel outlet pipe 9 is installed between the cat cracker of air outlet duct system and baffler, increase thermoelectricity recovering device on it, at metal foam 4, polyamide pad 5, stainless steel outlet pipe 9, hot junction ring aluminum alloy hot plate 10, cold junction ring aluminum alloy hot plate 11 radial side arranges multiple straight hole, circle equiangularly calibration cutting cylindrical hole on the thin-walled of cold junction ring aluminum alloy hot plate 11, heat pipe is placed in these cylindrical holes, high-temperature heat pipe 2 one end contacts with tail gas through stainless steel outlet pipe 9, transition fit with it in the circular hole that the other end is arranged at hot junction ring aluminum alloy hot plate 10, transition fit with it in the circular hole that middle Cryo Heat Tube 3 one end is placed in cold junction ring aluminum alloy hot plate 11, middle part is through the cylindrical hole of polyamide pad 5, transition fit with it in the circular hole that the other end is placed in metal foam 4, cooling water car is passed into by water inlet 12, flow out from water outlet 13.
Described hot junction ring aluminum alloy hot plate 10 and cold junction ring aluminum alloy hot plate 11 material are that thermal resistance is low and the aluminium alloy plate that quality is light, hot junction ring aluminum alloy hot plate 10 center hole is equal with the external diameter of stainless steel outlet pipe 9, cold junction ring aluminum alloy hot plate 11 center hole is equal with the external diameter that teflon thermal insulation encloses 6, wherein, after hot junction ring aluminum alloy hot plate 10 and cold junction ring aluminum alloy hot plate 11 adopt Dual-layer slotting thin aluminium alloy plate clamping heat pipe, brazing forms.Not Mechanical Contact between ring aluminum alloy hot plate 10 and cold junction ring aluminum alloy hot plate 11, only has Heat transmission, tail gas heat quantity is transferred to annular heat electrical chip 1 by ring aluminum alloy hot plate 10, and then homalographic Heat transmission is given and cold junction ring aluminum alloy hot plate 11.
Described annular heat electrical chip 1 is ring, the consistent size of its surface of contact with ring aluminum alloy hot plate 10 and cold junction ring aluminum alloy hot plate 11, ensures delivered heat and temperature distribution gradients uniformity.For having the band center hole semiconductor chip of Seebeck effect, stainless steel outlet pipe 9 is the annular hollow shape stainless steel of good rigidly, is applicable to existing air outlet duct system and simply transforms, make full use of limited space, chassis.
Described high-temperature heat pipe 2 leads to and on ring aluminum alloy hot plate 10, to get out equal diameter through hole machinery rush dress and form, ring surface is formed all-round Long pointer formula arrangement, the heat pipe number of assembling can not limited to according to actual requirement change, tube wall adopts stainless steel and working medium is pure water, be applicable to the high-temperature tail gas contacting 300-600 degree, ensure the high-temperature tail gas heat flowed out in stability and high efficiency transmission stainless steel outlet pipe.
Described metal foam 4 is foam type aluminum alloy, can fully fill with cooling water and have the light feature of quality, in Heat transmission process, provide special flow passage, makes cooling water and middle Cryo Heat Tube 3 fully can carry out heat exchange, reaches the object of high efficient heat exchanging.
Described intelligent MPPT module, by the combination of bypass diode and annular heat electrical chip 1, controls output voltage and electric current, reaches automobile circuit system power reguirements.
Described shell 8 is arranged cooling water intake 12 and water outlet 13, water intake 12 is arranged at below device stem, and water outlet 13 is placed in device upper rear by tube bundle, makes cooling water can fully fill metal foam 4.Intake-outlet is arranged on the least significant end of cooling system.
Described teflon thermal insulation circle 6 materials are the teflon that thermal resistance is very large, it is placed between outlet pipe 9 and cold junction annulus aluminum alloy hot plate 11 and conducts on cold junction annulus aluminum alloy hot plate 11 with the high temperature intercepted on outlet pipe wall, thickness is that the ultra-thin pyrographite pad 7 of 0.025mm is arranged in the cold and hot two ends of annular heat electrical chip 1 respectively, to reduce the thermal contact resistance between itself and aluminium alloy plate, polyamide pad 5 material is the good and polyamide that thermal resistance is large of insulation, it is placed in foam metal 4 and hot junction ring aluminum alloy hot plate 10, cold junction annulus aluminum alloy hot plate 11, between annular heat electrical chip 1, the electric current being used for intercepting thermoelectric chip generation imports cold and hot aluminum alloy plectane and forms thermal-protective coating.
As shown in Figure 1, high temperature automotive tail gas stream by outlet pipe 9 time, waste heat is transferred to the hot junction ring aluminum alloy hot plate 10 in each heat exchanger unit by high-temperature heat pipe 2, thus hot-fluid is introduced the larger rosette of area is convenient to adapt to the round-shaped of annular heat electrical chip 1, cooling water circulation carries out fully cooling by water intake 12 and water outlet 13 pairs of devices and ensures normal work;
As shown in Figure 4, vehicle exhaust thermoelectricity recovering device of the present invention is made up of multiple annular heat exchange unit, according to direction of heat flow: tail gas arrive after high-temperature heat pipe 2 hot junction ring aluminum alloy hot plate 10 after ultra-thin pyrographite pad 7 to thermoelectric chip 1 again after ultra-thin pyrographite pad 7 to cold junction ring aluminum alloy hot plate 11 to middle Cryo Heat Tube 3 through metal foam 4 to cooling water, wherein partial heat energy is converted into electric energy;
As shown in Figure 5, in annular heat exchange unit, high-temperature heat pipe 2 one end obtains waste heat by inserting in tail gas hot-fluid perpendicular to the direction of outlet pipe 9 axis, transition fit in the cylindrical hole that the other end is placed in hot junction ring aluminum alloy hot plate 10, in high-temperature heat pipe 2, steam will be dispelled the heat by condensation, exhaust heat-energy is conducted to hot junction ring aluminum alloy hot plate 10, heat reaches annular heat electrical chip 1 hot junction by ultra-thin pyrographite pad 7 again.Middle Cryo Heat Tube 3 one end is placed in the cylindrical hole of cold junction ring aluminum alloy hot plate 11, the other end is placed in the cylindrical hole of metal foam 4, in middle Cryo Heat Tube 3, steam will be dispelled the heat by condensation, by the thermal energy conduction of cold junction ring aluminum alloy hot plate 11 to metal foam 4, thus reduce the temperature of annular heat electrical chip 1 cold junction.The high temperature intercepting outlet pipe 9 wall conducts to and embeds cold junction ring aluminum alloy hot plate 11 by the teflon thermal insulation circle 6 be arranged between cold junction ring aluminum alloy hot plate 11 and outlet pipe 9, and increase the temperature difference at thermoelectric chip 1 two ends, promoting thermal energy is the efficiency of electric energy.
Claims (5)
1. an efficient automobile tail gas thermoelectricity recovering device, is made up of annular heat electrical chip, high-temperature heat pipe, middle Cryo Heat Tube, metal foam, polyamide pad, the adiabatic circle of teflon, ultra-thin pyrographite pad, smart circuit collection and MPPT module, stainless steel outlet pipe, hot junction ring aluminum alloy hot plate, cold junction ring aluminum alloy hot plate and shell, it is characterized in that: stainless steel outlet pipe is installed between the cat cracker of air outlet duct system and baffler, increase thermoelectricity recovering device on it, at metal foam, polyamide pad, stainless steel outlet pipe, hot junction ring aluminum alloy hot plate, cold junction ring aluminum alloy hot plate radial side arranges multiple straight hole, circle equiangularly calibration cutting cylindrical hole on the thin-walled of cold junction ring aluminum alloy hot plate, heat pipe is placed in these cylindrical holes, high-temperature heat pipe one end contacts with tail gas through stainless steel outlet pipe, transition fit with it in the circular hole that the other end is arranged at hot junction ring aluminum alloy hot plate, transition fit with it in the circular hole that middle Cryo Heat Tube one end is placed in cold junction ring aluminum alloy hot plate, middle part is through the cylindrical hole of polyamide pad, transition fit with it in the circular hole that the other end is placed in metal foam, cooling water car is passed into by water inlet, flow out from water outlet.
2. according to a kind of efficient automobile tail gas thermoelectricity recovering device described in claim 1, it is characterized in that hot junction ring aluminum alloy hot plate and cold junction ring aluminum alloy heat plate material are aluminium alloy plate, hot junction ring aluminum alloy hot plate center hole is equal with the external diameter of stainless steel outlet pipe, cold junction ring aluminum alloy hot plate center hole is equal with the external diameter that teflon thermal insulation is enclosed, wherein, after hot junction ring aluminum alloy hot plate and cold junction ring aluminum alloy hot plate adopt Dual-layer slotting thin aluminium alloy plate clamping heat pipe, brazing forms; Tail gas heat quantity is transferred to annular heat electrical chip by ring aluminum alloy hot plate, and then homalographic Heat transmission is given and cold junction ring aluminum alloy hot plate.
3. according to a kind of efficient automobile tail gas thermoelectricity recovering device described in claim 1, it is characterized in that described annular heat electrical chip and ring aluminum alloy hot plate and cold junction ring aluminum alloy hot plate are ring, the consistent size of its surface of contact, stainless steel outlet pipe is the annular hollow shape stainless steel of good rigidly.
4. according to a kind of efficient automobile tail gas thermoelectricity recovering device described in claim 1, it is characterized in that described high-temperature heat pipe leads in the equal diameter through hole got out on ring aluminum alloy hot plate, ring surface is formed all-round Long pointer formula and arranges.
5. according to a kind of efficient automobile tail gas thermoelectricity recovering device described in claim 1, it is characterized in that described shell arranges cooling water intake and water outlet, water intake is arranged at below device stem, water outlet is placed in device upper rear by tube bundle, makes cooling water fully can fill metal foam; Intake-outlet is arranged on the least significant end of cooling system;
According to a kind of efficient automobile tail gas thermoelectricity recovering device described in claim 1, it is characterized in that the adiabatic loop material of described teflon is the teflon that thermal resistance is very large, it is placed between outlet pipe and cold junction annulus aluminum alloy hot plate and conducts on cold junction annulus aluminum alloy hot plate with the high temperature intercepted on outlet pipe wall, thickness is that the ultra-thin pyrographite pad of 0.025mm is arranged in the cold and hot two ends of annular heat electrical chip respectively, to reduce the thermal contact resistance between itself and aluminium alloy plate, polyamide gasket material is the good and polyamide that thermal resistance is large of insulation, it is placed in foam metal and hot junction ring aluminum alloy hot plate, cold junction annulus aluminum alloy hot plate, between annular heat electrical chip, the electric current being used for intercepting thermoelectric chip generation imports cold and hot aluminum alloy plectane and forms thermal-protective coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520310002.0U CN204646386U (en) | 2015-05-14 | 2015-05-14 | Efficient automobile tail gas thermoelectricity recovering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520310002.0U CN204646386U (en) | 2015-05-14 | 2015-05-14 | Efficient automobile tail gas thermoelectricity recovering device |
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| CN204646386U true CN204646386U (en) | 2015-09-16 |
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