CN100531476C - Electric heating module manufacturing process using a jig and the electric heating module - Google Patents
Electric heating module manufacturing process using a jig and the electric heating module Download PDFInfo
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- CN100531476C CN100531476C CNB2004800163696A CN200480016369A CN100531476C CN 100531476 C CN100531476 C CN 100531476C CN B2004800163696 A CNB2004800163696 A CN B2004800163696A CN 200480016369 A CN200480016369 A CN 200480016369A CN 100531476 C CN100531476 C CN 100531476C
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- cover
- water back
- electric heater
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- rectangular
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005485 electric heating Methods 0.000 title description 4
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 238000005219 brazing Methods 0.000 claims abstract description 18
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 153
- 238000000034 method Methods 0.000 claims description 43
- 239000000919 ceramic Substances 0.000 claims description 34
- 230000008878 coupling Effects 0.000 claims description 28
- 238000010168 coupling process Methods 0.000 claims description 28
- 238000005859 coupling reaction Methods 0.000 claims description 28
- 238000003475 lamination Methods 0.000 claims description 26
- 230000001681 protective effect Effects 0.000 claims description 21
- 229910010293 ceramic material Inorganic materials 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000002912 waste gas Substances 0.000 claims description 5
- 235000012771 pancakes Nutrition 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 239000011888 foil Substances 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract 2
- 239000000945 filler Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 32
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0012—Brazing heat exchangers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0233—Sheets, foils
-
- 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
- F01N2240/16—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 an electric heater, i.e. a resistance heater
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Resistance Heating (AREA)
Abstract
The present invention relates to a method of manufacturing an electric heater, comprising the steps of laminating a corrugated strip and a flat strip, each being made of a thin metal plate, to form a heating line, applying a filler metal or a sheet-type brazing foil to the heating line, and brazing in a vacuum furnace, wherein a jig is used for maintaining a predetermined shape of the heating line, and to an electric heater, which allows a free variation in a specific resistance of mantles while having an excellent mechanical strength, at a connected portion between the mantles and the heating line, and an excellent insulation property. The present invention provides a method of manufacturing an electric heater for purifying exhaust gas of a vehicle, comprising the step of laminating strips to form a heating line, wherein the strips are laminated in a jig formed with a heating line insertion groove of a predetermined shape therein. The present invention also provides an electric heater for purifying an exhaust gas of a vehicle, comprising inner and outer mantles separating the electric heater into inner and outer portions of the electric heater and supplied with a power from electrodes, respectively, a heating line having strips laminated to each other while being provided such that the heating line can be separately located at the inner and outer portions of the electric heater and such that the strips of the heating line are connected to the inner and outer mantles, respectively, and a radiantion heat shield integrally mounted on an assembly of the mantles and the heating line, wherein each of the mantles is divided into at least two parts, and the heating line has a flat shape plane of a predetermined length at the end of the heating line connected to the mantles by means of a fastening means.
Description
Technical field
The present invention relates to a kind of method of using anchor clamps to make electric heater, and pass through the electric heater that this method is made.More particularly, the present invention relates to a kind of method of making electric heater, comprise the following steps: the rectangular and flat rectangular lamination of the ripple that each free metal sheet is made, form water back, thickener type (paste-type) filling metal or sheet type braze foil are put on this water back, in the vacuum furnace brazing, wherein anchor clamps are used to keep the reservation shape of water back then.The invention still further relates to a kind of electric heater, this electric heater allows freely the changing of ratio resistance of cover, and the coupling part between cover and water back has excellent mechanical strength and has the insulation property of excellence simultaneously.
Background technology
In general, because the internal combustion engine of vehicle is emitted a large amount of harmful exhausts by combustion fuel, so adopt catalyst to reduce the amount of harmful exhaust.
Catalyst is coated on the ceramic mould base material usually, and is used for harmful exhaust is converted into harmless carbon dioxide or analog.Yet, the ceramic mould base material be easy to be subjected to by catalyst activation and oxidation with the caused thermal shock of exothermic reaction and the infringement of the vibration of vehicle.And, to the physics or the chemical damage of ceramic mould base material, usually take place such as sulphur compound that in fuel, contains or the caused poisoning of analog.
In order to address these problems, the someone has proposed with the metal base that has been coated with catalyst, replaces pottery (mainly being Ke Diruite (the Codierite)) base material that has been coated with noble metal catalyst.Metal base prepares by following method, promptly, the ripple that each free metal sheet of alternatively laminated is made is rectangular and flat rectangular, twine the lamination bonding jumper, the thickener type is filled the bonding jumper that metal or sheet type braze foil put on winding, be used to increase its adhesion, and at this bonding jumper of vacuum furnace brazing.
Bonding jumper by brazing this flat/ripple is rectangular is bonded to each other, this flat/ripple rectangular in advance as a whole assembly twine, and in inserting jar.The same with the conventional ceramic base material, the metal base of making by brazing has formed small structure, uses behind the painting catalyst thereon.
Though metal base has the structure similar to ceramic base material basically, to compare with the conventional ceramic base material, it has very strong heat and mechanical endurance.Therefore, metal base mainly has been used to have the two-wheel vehicles of the high-temp waste gas of high flow capacity.
Especially, recent trend according to the reinforcement regulations that are intended to reduce toxic emission, under petrolic situation, a kind of method is arranged, in the method, (three-way catalyst) is arranged on and the engine position adjacent with three-way catalyst, so that reduce the amount of the unburned hydrocarbon that discharges in the cold start of engine or idle running process.Perhaps, the method for a kind of use based on the electric heater of the principle of metal base arranged, this method activates this catalyst at short notice by heating electric heater in the cold start process.
Simultaneously, under the situation of Diesel engine, adopt diesel particulate filter traps (filter trap) to reduce the smog of Diesel engine.As for the technology that can be used for the diesel particulate filter traps, the trapping technique that adopts ceramic filter is arranged, and the regeneration techniques of the smog of oxidation regularly or burning capture.Recently, the electric heater with metal base has been used for regeneration techniques.
Here, the electric heater that is used for regeneration techniques generally has several thin plates of mutual lamination, and as mentioned above, they use when making metal base.Simultaneously, in having the electric heater of metal base, have the rectangular alternately lamination of ripple in different apertures and be bonded to each other.Therefore, ripple is rectangular to have formed uneven faying face, and this has caused the reduction of adhesion after brazing.And, in fact be difficult to use above method, not only since the water back that is difficult to twine mutual lamination with rectangular, also owing to the inhomogeneities of ratio resistance, structure and the electrical property of water back.
The uneven of water back caused a large amount of relatively electric current of a side that puts on water back than resistance, compare with its opposite side, this caused the non-uniform temperature of water back or in it part of temperature raise.As a result, the specific part thermal endurance at water back descends.
Simultaneously, consider the existing electrode of electric heater and the effect of cover, electrode is connected in power supply with inner water back.Therefore, it must suitably with on every side insulate, and has good thermal endurance/mechanical endurance.And, because cover can make electric current be applied to water back and on every side between the ground wire of power supply (ground), thereby also must guarantee enough thermal endurances and mechanical endurance.
Than the situation of using ceramic material as insulating material, the injury that the structure of the electrode of traditional electric heater easily is hit or vibrates.In addition, because electrode combines with interior cover, inconvenience is, even have only electrode to be damaged or destroy, whole electric heater must be with new replacing.This cover is used for making electric current to be applied between water back and the outside, and combines with water back by brazing.
About this point, because the faying face between the flat cover of water back and ripple are rectangular is uneven, traditional electric heater has extremely weak machinery and heat structure, does not allow to overlap freely changing according to the ratio resistance of the magnitude of current of water back.
And, with heater and radiation proof thermic devices or the metal base that provides as mentioned above, the stage of assembling in the end installs dielectric pin (insulation pin) and is used to make the device electric insulation, keep simultaneously under the situation of its mechanical strength, problem is that dielectric pin makes the configuration of electric heater and manufacture method complicated, even and this manufacture method is by industrialization, production cost has also improved.
Summary of the invention
The present invention has been proposed in order to address the above problem.An object of the present invention is to provide a kind of method of making electric heater, this method comprises the step that adopts anchor clamps to keep the shape of water back, thereby prevents that the length of the water back that output causes according to brazing and the variation of shape from reducing.
Another object of the present invention provides a kind of electric heater, and freely changing of the ratio resistance of this electric heater permission cover has the mechanical strength of the excellence of the coupling part between cover and water back simultaneously, the excellent radiant heat shielding and the insulation property of excellence.
According to an aspect of the present invention, above and other purpose can be finished by the method for making the electric heater that is used for purifying vehicle waste gas is provided, this method comprises rectangular lamination to form the step of water back, wherein rectangular in anchor clamps by lamination, formed the water back insertion groove of reservation shape in these anchor clamps.
These anchor clamps can be made by metal or ceramic material.These anchor clamps can further form at least one cover insertion groove within it, are used to install the cover of power supply being supplied with water back.In addition, these anchor clamps can further form inclined-plane (chamfer) at the wall edge of water back insertion groove or at the wall edge that overlaps insertion groove.
According to another aspect of the present invention, a kind of electric heater that is used for purifying vehicle waste gas is provided, cover and overcoat in it comprises, water back, and radiant heat protective cover, cover and overcoat are divided into electric heater inside and outside in being somebody's turn to do, and respectively by the electrode supply power, this water back has the rectangular of mutual lamination, make water back can be arranged on the inside and outside of electric heater separately simultaneously and make water back rectangular be connected in cover and overcoat, this radiant heat protective cover integral installation is on the assembly of cover and water back, and wherein each cover is separated at least two parts.
At the end that is connected in the heat tunnel of cover by fastener, this water back can have flat pattern rectangular of predetermined length.The rectangular of water back can be connected with cover at the differing heights of cover, removing the interference between electrode and the water back, and the increase specific area of overlapping.Each electrode can comprise electrode bar, ceramic layer, and electrode retaining collar, being provided with the cotter joint that is fastened at cover at an end of this electrode bar, this ceramic layer holds electrode bar in the part of electrode bar, this electrode retaining collar makes this electrode retaining collar can surround ceramic layer in the fitted around of electrode bar.The cover of water back and rectangular can mutually combining by brazing.In addition, the Coupling supporter of the cover of water back and rectangular predetermined portions that can be by being arranged in water back tightens up mutually with being assembled to the Coupling that the Coupling supporter contacts with cover simultaneously.The cover of water back and rectangular can tightening up mutually by tightening up pin.The radiant heat protective cover adopts the dielectric pin assembly to be installed on the assembly of water back and cover, causes radiant heat protective cover and water back and cover electric insulation.
The length of the cover of the anode of electrode can be shorter than the length of the cover of the negative electrode of electrode.On the periphery of the electrode bar that electrode retaining collar has been installed, formed at least one pit.This dielectric pin assembly can comprise the ceramic component with through hole, and is inserted into the dielectric pin in the through hole of ceramic component.This dielectric pin can be divided into two parts in the dielectric pin assembly, making provides predetermined gap between two parts of the dielectric pin in ceramic component.
Description of drawings
Can more be expressly understood above and other purpose of the present invention with reference to following detailed description in conjunction with the accompanying drawings, feature and other advantage.Wherein:
Fig. 1 is according to the water back that is separated from each other of the cellular-type electric heater of a specific embodiment of the present invention and the schematic diagram of anchor clamps;
Fig. 2 is the schematic diagram that is inserted into the water back in the anchor clamps according to the cellular-type electric heater of this specific embodiment of the present invention;
Fig. 3 is the partial enlarged drawing of anchor clamps;
Fig. 4 is the partial enlarged drawing of the water back of Fig. 1;
Fig. 5 is the schematic diagram that is inserted into the water back in the anchor clamps according to the integral type electric heater of another specific embodiment of the present invention;
Fig. 6 is the schematic diagram that is inserted into the water back in the anchor clamps under the situation according to the cellular-type electric heater of another specific embodiment of the present invention;
Fig. 7 is the enlarged drawing of the part " C " in the key diagram 6;
Fig. 8 is the enlarged drawing of the part " D " in the key diagram 7;
Fig. 9 is the schematic diagram of the end of interconnective water back and cover;
Figure 10 is the interior cover of assembled state and the schematic diagram of overcoat;
Figure 11 is the stereogram of electrode bar of the present invention;
Figure 12 is the schematic diagram of first specific embodiment of electrode, has wherein assembled electrode bar and electrode retaining collar;
Figure 13 is the cross-sectional view of the electrode of Figure 12;
Figure 14 is the cross-sectional view of second specific embodiment of electrode of the present invention;
Figure 15 is the schematic diagram that is in the state that the assembly of water back and cover and electrode is separated from each other;
Figure 16 is the schematic diagram that lamination water back, cover and electrode are in assembled state;
Figure 17 is the schematic diagram that tightens up pin that is used for interior cover and overcoat are connected in water back;
Figure 18 is that cover and overcoat are connected in the schematic diagram of the state of water back by tightening up pin in being in;
Figure 19 is the stereogram of Coupling and Coupling supporter;
Figure 20 is the Coupling of adapter sleeve and water back and the schematic diagram that the Coupling supporter is in assembled state;
Figure 21 is the schematic diagram according to first specific embodiment of dielectric pin assembly of the present invention;
Figure 22 is the schematic diagram according to second specific embodiment of dielectric pin assembly of the present invention;
Figure 23 is the schematic diagram according to the 3rd specific embodiment of dielectric pin assembly of the present invention;
Figure 24 is the schematic diagram according to the 4th specific embodiment of dielectric pin assembly of the present invention;
Figure 25 is the schematic diagram according to the 5th specific embodiment of dielectric pin assembly of the present invention;
Figure 26 is the schematic diagram according to the 6th specific embodiment of dielectric pin assembly of the present invention;
Figure 27 is in the electric heater assembly of separated position and the schematic diagram of the hot film of radiation proof;
Figure 28 is in the electric heater assembly of assembled state and the schematic diagram of the hot film of radiation proof;
Figure 29 is in the electric heater of separated position and the schematic diagram of shell; With
Figure 30 is in the electric heater of assembled state and the schematic diagram of shell.
Embodiment
Those skilled in the art describes at present preferred specific embodiment of the present invention in detail below with reference to accompanying drawing, so that can easily understand the duplicate invention of laying equal stress on.
Vehicle of the present invention is applied to the device of purifying exhaust air with electric heater.Electric heater of the present invention is made by the method that comprises the following steps: the rectangular and flat rectangular lamination of ripple that each free metal sheet is made, form water back, thickener type filling metal or sheet type braze foil are put on this water back, the radiant heat protective cover is installed on the water back, then at this water back of vacuum furnace brazing.
For the cellular-type electric heater, this heater is divided at least two parts, and such as interior electric heater part and outer electric heater part, therefore, thereby the thermal capacitance of interior and outer electric heater part can be controlled independently.Specifically, electric heater part and outer electric heater part in cellular-type electric heater quilt cover is divided into, wherein electrode and cover are used for that power supply supplied with water back and make the electric current water back of flowing through then.
The number of electrode and cover provides according to the number of the partitioned portion of electric heater.Electrode and cover are connected in water back and shell, are used to improve total machinery/calorific intensity of electric heater.
Below describe the method for making aforesaid electric heater in detail.The method of making electric heater comprises the following steps: that alternately lamination is flat rectangular and ripple is rectangular or lamination has alternately formed the rectangular of ripple on it, adopt the water back of the rectangular formation required form of lamination, cover and electrode are connected in the rectangular of water back with required form, binding agent is applied on the assembly of water back and cover, the radiant heat protective cover is installed on the assembly of water back and cover, and the water back of radiant heat protective cover and the assembly of cover have been installed in brazing.
Simultaneously, in the step of the water back that adopts the rectangular formation required form of lamination, be difficult in the interval that keeps between rectangular, form the water back of required form.Therefore, the present invention adopts the anchor clamps that formed the water back insertion groove with reservation shape in it.
Because anchor clamps must be reused, so anchor clamps are preferably made by metal or ceramic material.
Under the situation that anchor clamps are made of metal, these anchor clamps can be coated with ceramic material, bond mutually so that prevent cover and anchor clamps or water back and anchor clamps.
Be used at least one cover insertion groove of anchor clamps formation of installation sleeve thereon, its conduction is connected in water back to supply with power supply.In addition, these anchor clamps can further insert the wall edge of groove or overlap the wall edge formation inclined-plane that inserts groove at water back.
In anchor clamps, formed cover and inserted groove, make cover insert groove can with the rectangular outer surface direct neighbor of water back, and cover can be arranged in cover and insert groove, to provide rectangular slight adhesive force.
In addition, inserted anchor clamps rectangular or cover when employing and formed when having the water back of required form, operation is inconvenient, and this is because rectangular or cover can insert the wall edge of groove or the wall edge collision that cover inserts groove with water back.Therefore, water back inserts groove or overlaps and insert groove preferably on its wall edge formation inclined-plane.
Under the situation that electric heater is made with aforesaid method, each cover is divided at least two parts.
The length of the cover of the negative electrode that is shorter in length than electrode of the cover of the anode of electrode.
At the end that is fastened at the water back of cover by device for fastening, it is rectangular that water back has the pancake of predetermined length.Simultaneously, in traditional electric heater, the ripple state of the rectangular end with water back of water back is connected in cover, after frequent electric heater operation, causes the decline of the power that tightens up between cover and water back rectangular.
According to the present invention, when with rectangular manufacturing water back, rectangularly do not become corrugated at its end, so that it is rectangular to form pancake at the end of the water back that is connected in cover, attempt to improve the power that tightens up between cover and water back rectangular.As a result, tightening up between cover and water back rectangular is easy and firm, thereby the vibration rectangular and that overlap owing to vehicle that has prevented the water back that tightens up gets loose or dissociates.
Electrode is connected in cover with the supply electric energy.Each electrode comprises electrode bar and electrode retaining collar, is provided with cotter joint so that it is fastened at this cover at an end of electrode bar, and this electrode retaining collar is installed in the periphery of electrode bar.
This electrode bar is connected in cover, and is used to connect electric heater and power supply.Require the ground wire electric insulation of this electrode bar, and must have excellent thermal characteristics, because heat is applied thereto repeatedly the power supply of water back and engine.
On the part of electrode bar, provide ceramic layer, and on the outer surface that electrode retaining collar and the electrode bar that ceramic layer is provided have been installed, formed groove, thereby the heat and the electrical property of raising are provided for electrode retaining collar.
In order to reduce the contact resistance between cover and water back, increase the surface area of cover, and with nested structureization, so that the coupling part between cover and electrode can freely change.And, reached the structural change of the cover of the change of following electric heater electric capacity by the height that changes cover.
In addition, the rectangular differing heights at cover of water back is connected in this cover, so that enlarge specific area by the interference of eliminating between electrode and the water back.As a result, the number of the water back of per unit area winding can further increase.
In addition, the cover of water back and rectangular by brazing, Coupling or tighten up pin and interfix.
Brazing is carried out in vacuum furnace, and wherein spelter solder puts on the assembly of cover and water back.
And, can adopt the Coupling supporter of the predetermined portions that is positioned at water back and Coupling to overlap and the rectangular of water back tightens up mutually, this Coupling is assembled in contact sleeve in the Coupling supporter.
Adopt the dielectric pin assembly that the radiant heat protective cover is installed on the assembly of water back and cover.This dielectric pin assembly comprises the ceramic component with typical through hole, and the interior dielectric pin of through hole that is inserted into ceramic component.This dielectric pin is divided into two parts, and making provides predetermined gap between two parts in ceramic component.
The dielectric pin assembly is used to remain on the mechanical strength between these two assemblies and is used to make the radiant heat protective cover insulated from each other with cover between radiant heat protective cover and cover.Provide the dielectric pin assembly to be used for keeping the overall shape of radiant heat protective cover, this dielectric pin assembly is made up of metal and ceramic material.Except the effect that keeps the mechanical strength between these two assemblies, dielectric pin assembly of the present invention can also be used to keep the spacing between the assembly.
Describe a specific embodiment of the present invention in detail below with reference to accompanying drawing.
Fig. 1 shows according to the internal heater 1 of a specific embodiment of the present invention and the water back of outer heater 2, and anchor clamps 10, and it can use when making the cellular-type electric heater.
Shown in the ring A and B of Fig. 1, the water back of this specific embodiment can have wherein have different holes density one or more rectangular in water back the structure of lamination, perhaps wherein have the one or more rectangular of predetermined period (period) respectively by the structure of lamination.
Anchor clamps 10 according to this specific embodiment can form and have water back insertion groove, and interior cover inserts groove 4 and overcoat inserts groove 3, make cover and electrode integrally to fit together.
And these anchor clamps can further form, and have be used to keep in cover insert groove 4 and overcoat inserts the retaining part 5 in the gap between the groove 3 so that prevent in shortening with water back part after the electric heater actual installation is on engine.
Fig. 2 is the schematic diagram that is inserted into the water back of the electric heater in the anchor clamps.
Fig. 3 is the partial enlarged drawing of anchor clamps 10.As shown in Figure 3, these anchor clamps insert at water back groove wall upper limb or formed the inclined-plane 6 of predetermined angular at the upper limb that cover inserts the wall of groove.This inclined-plane is used to be easy to insert water back.
Fig. 4 is the partial enlarged drawing of water back, shows an embodiment who can be used in the rectangular method of lamination of the present invention.
Rectangular as for water back can adopt to have the rectangular of different holes density, has the rectangular of various amplitude (oscillation), and has the rectangular of different ripple cycles.Specifically, water back has under the rectangular situation about forming of different holes density by lamination therein, alternately the method for low hole density ripple rectangular 11 of lamination and high density holes ripple rectangular 12 is as the rectangular method of lamination, and have by lamination at water back under the rectangular situation about forming of different cycles, identical shaped rectangular of lamination makes a rectangular corrugated portion can be positioned at the method for another rectangular flat part as the rectangular method of lamination.For water back, provide dissimilar Metal Contact parts 13 respectively.
Fig. 5 is the schematic diagram that is inserted into the water back in the anchor clamps according to the integral type electric heater that is in assembled state of another specific embodiment of the present invention.Under the situation of integral type electric heater, except the number of cover, manufacture method is similar to the method for cellular-type electric heater.
Fig. 6 is the schematic diagram that is inserted into the water back in the anchor clamps according to the cellular-type electric heater that is in assembled state of another specific embodiment of the present invention.Fig. 7 is the enlarged drawing of the part " C " among Fig. 6, and Fig. 8 is the enlarged drawing of the part " D " among Fig. 7, and Fig. 9 is the schematic diagram of the cover of the far-end of interconnective water back and outer heater.
In general, ripple rectangular 11 and 12 water back directly are incorporated into cover.Yet according to the present invention, under the situation of the water back of rectangular 14 formation of usefulness pancake, water back is connected in cover by bolt 27 at its end endways.
Figure 10 is the schematic diagram of interior cover of the present invention and overcoat.Be divided in the anode at the interior cover of core and overlap 21 in the cover 20 and negative electrode, and under the situation of cellular-type electric heater, anode part is less than cathode portion.Cover 20 is provided with the part of inserting the electrode that is connected in power supply in the anode, and cover 21 is provided with the part that is connected in water back in the negative electrode.
Figure 11-the 14th, the schematic diagram of the electrode bar that in this specific embodiment, adopts.As shown in figure 11, electrode bar is formed with pit 31, wherein as shown in figure 12, ceramic layer 33 is around electrode bar 30, thereby cause increasing of heat and electrical property, this is caused by ceramic material, and has formed cotter joint 32 in the part that is connected in cover, thereby makes the contact resistance minimum between cover and the electrode bar.
As shown in figure 12, electrode bar 30 is be provided with electrode retaining collar 36 on the dielectric ceramic layer 33 of electrode bar, so that cover is connected in shell.Internal electrode rod 30 is used to make electric current to flow through it, and outer electrode rings 36 is used for cover is connected in shell.Ceramic layer between these two hardwares is used to make electrode bar 30 and electrode retaining collar 36 mutually insulateds.
Figure 13 is the cross-sectional view of the electrode bar of Figure 12.Figure 14 is the cross-sectional view according to the electrode bar of another specific embodiment of the present invention, and wherein dielectric ceramic layer 33 extends to fixing or is assemblied in cover, is used for destroying a part that insulate in assembling or fixation procedure.
Figure 15 and 16 be according to Fig. 1 to the method for Figure 14, be in the schematic diagram of assembly of the electric heater of the present invention of assembled state respectively.When cover 20,21 and 22 was installed on the anchor clamps 10, what be necessary was that cover 20,21 and 22 always is connected in anchor clamps 10 on the constant position of anchor clamps.For this reason, at first, as shown in figure 10, provide interior cover and overcoat or interior cover 20 and 21, electrode bar as shown in figure 12 is connected in this cover by bonding or bolt 32.
Specifically, this electrode is connected in interior cover, make should in cover can with overcoat 22 electric insulations.
In addition, the coupling part of electrode bar and water back and cover is positioned at diverse location, thereby has increased specific area of overlapping and the width of freely regulating water back under the situation of the big change that need not to overlap.
Figure 17 and 18 is fixedly schematic diagrames of the method for water back and cover of explanation.The interior section that is positioned at the water back of cover is incorporated into cover 20 and 21, makes after the cover 20 and 21, by brazing water back to be incorporated into interior cover 20 and 21 in directly being contacted with.Its exterior section between interior cover and overcoat respectively by a plurality of tighten up pin 15 be connected in the cover and overcoat.Tighten up pin 15 herein, and connect interior cover and the exterior section of water back and the exterior section of overcoat and water back.
And, as the example of the method that adopts adapter sleeve and water back, under water back must the situation with new replacement, owing to water back is cut off; Shown in Figure 19 and 20, Coupling 40 and Coupling supporter 41 can be used for water back and cover are interconnected.Herein, Coupling 40 usefulness Coupling supporters 41 support.
In order to use Coupling, Coupling is especially considered the metallicity of Coupling and cover so that the minimized mode of the contact resistance between Coupling and the cover makes up.
After assembling cover and water back, the hot film 73 of radiation proof is installed on this assembly.In this case, should guarantee that the hot film 73 of radiation proof has enough mechanical strengths, and hot film 73 of radiation proof and water back electrically insulated from one another.
Figure 21-26 shows the specific embodiment that is applied to dielectric pin assembly of the present invention.
In Figure 21, the hexahedron dielectric pin 62 that will have square cross section is inserted in the cylinder-shaped ceramic element 60.In Figure 22, the cylindrical shape dielectric pin is inserted in the cylinder-shaped ceramic element.
These two insulation assemblies have a kind of structure jointly, and two dielectric pin are inserted in the cylinder-shaped ceramic element in this structure, and the predetermined gap 64 of 2～3mm is provided between them.In view of the adhesion strength between the metal of the ceramic material of ceramic component and dielectric pin, the hexahedron dielectric pin is better than the cylindrical shape dielectric pin.Yet in view of easy to manufacture, the cylindrical shape dielectric pin is more favourable than hexahedron dielectric pin.Therefore, the dielectric pin assembly can suitably be made according to applied environment.
In Figure 23, the cylindrical shape dielectric pin is inserted in the hexahedron ceramic component.In Figure 24, gap holding plate (gap holding plate) 69 is used to increase bond strength.Figure 25 shows the gap holding device 70 that is inserted into the preliminary dimension in the dielectric pin assembly, and it is used for more firm and keep gap between the dielectric pin apace in the process that forms the dielectric pin assembly.Figure 26 shows the example of offset-type ceramic component 72, and it can be used in the dielectric pin assembly and is not subjected to structural limitations in size, has increased the situation of bond strength simultaneously.In this case, because many metallic pins are inserted in the ceramic component, so have the advantageous effect that intensity increases.
In the present invention, these dielectric pin assemblies appropriately use according to application, price and limiting factor.
Figure 27 and 28 shows the method that adopts the dielectric pin assembly to be used for radiant heat protective cover 73.At first, before forming radiant heat protective cover 73, the position of the dielectric pin in the radiant heat protective cover is inserted into minimum purpose dielectric pin assembly in the radiant heat protective cover 73, wherein can keep the mechanical strength of electric heater.
Use the insertion device that the dielectric pin assembly is inserted on the radiant heat protective cover 73, the while is corresponding to the position and the number of dielectric pin assembly.The predetermined force that employing carefully applies from the outside to the water back, the radiant heat protective cover 73 that will have a dielectric pin assembly is installed in the water back of assembling and puts.This fitting operation must be so that the radiant heat protective cover can be mounted thereto, remains on simultaneously on the right angle of cover to carry out.
Figure 29 and 30 show complete assembled state according to electric heater of the present invention.Herein, the shell 100 that is used for electric heater connects thereon, makes it possible to keep the total mechanical intensity of electric heater.
The present invention is designed to solve the stable on heating deterioration of water back itself, this deterioration is to adopt metal base to form and twining in the process of traditional ripple water back of electric heater and since the inhomogeneous ratio resistance that causes of structure local difference caused.According to the present invention, above problem can solve by the method that the anchor clamps that adopt metal or ceramic material are made water back, and this is different from the traditional winding method that forms the ripple water back.
From the above description as can be seen, according to the present invention, cover is fixed in anchor clamps, and anchor clamps are applied to cover with predetermined force when brazing, makes the operation that connects water back and cover to carry out easily.And because cover has the structure that size can change easily, the contact resistance that can occur between water back and the cover can lower, thereby significantly reduces energy loss.
In addition, except brazing, for direct combined cover and water back or water back and water back, because adopt Coupling to be used for connecting, so can guarantee excellent thermal endurance and mechanical endurance.
In addition, electrode according to the present invention has improved the structure of its contact portion between ceramic material and metal, and on the groove that forms on the electrode bar, provide ceramic material, thereby prevented that significantly electrode bar is owing to the thermal expansion between ceramic material and the metal is ruptured with preset space length.And the dielectric pin assembly can have various specific embodiments according to various application, and fully improves on its structure and electrical property, thereby excellent patience is provided.
It should be understood that aforesaid specific embodiments and the drawings illustrative purposes and providing for example, the present invention limits by claims.In addition, it will be apparent to those skilled in that, under the situation that does not depart from the scope and spirit of the present invention of illustrating in the appending claims, allow various changes, increase and alternative.
Claims (15)
1. a manufacturing is used for the method for the electric heater of purifying vehicle waste gas, comprises rectangular lamination to form the step of water back, wherein should be rectangular in anchor clamps with the water back insertion groove that has formed reservation shape lamination.
2. the method for claim 1 is characterized in that, these anchor clamps are made by metal or ceramic material.
3. the method for claim 1 is characterized in that, these anchor clamps further form at least one cover and insert groove, are used for the cover of supply power is installed to water back.
4. the method for claim 1 is characterized in that, these anchor clamps further insert the wall edge of groove or overlapping the wall edge formation inclined-plane that inserts groove at water back.
5. electric heater that is used for purifying vehicle waste gas, described electric heater comprises: with electric heater be divided into the inside and outside part of electric heater, and respectively by the interior cover and the overcoat of electrode supply power; Water back, described water back has the rectangular of mutual lamination, make water back can be arranged on the inside and outside part of electric heater separately simultaneously and make water back rectangular be connected in cover and overcoat; And integrally be installed in radiant heat protective cover on the cover and the assembly of water back, wherein each cover is separated at least two parts, and water back has the pancake plane of predetermined length at the end that is connected in the water back of cover with device for fastening.
6. electric heater as claimed in claim 5 is characterized in that, the rectangular differing heights at cover of water back is connected in cover, thereby eliminates the interference between electrode and the water back and enlarge the specific area of overlapping.
7. electric heater as claimed in claim 5 is characterized in that, the length of the cover of the negative electrode that is shorter in length than electrode of the cover of the anode of electrode.
8. electric heater as claimed in claim 5, it is characterized in that, each electrode comprises an electrode bar, hold the ceramic layer of electrode bar in the part of electrode bar, and electrode retaining collar, end at this electrode bar is provided with a cotter joint so that this electrode bar is fixed in cover, and this electrode retaining collar makes this electrode retaining collar can surround this ceramic layer in the fitted around of electrode bar.
9. electric heater as claimed in claim 8 is characterized in that, has installed on it on periphery of electrode bar of electrode retaining collar and has formed at least one pit.
10. electric heater as claimed in claim 5 is characterized in that the rectangular of this cover and water back is connected to each other by brazing.
11. as claim 5 or 10 described electric heaters, it is characterized in that, the Coupling supporter of the predetermined portions by being positioned at water back be assembled to this Coupling supporter and contact the Coupling of this cover simultaneously, the rectangular of this cover and water back is bonded to each other.
12., it is characterized in that the rectangular of this cover and water back tightens up by tightening up pin each other as claim 5 or 10 described electric heaters.
13. electric heater as claimed in claim 5 is characterized in that, adopts the dielectric pin assembly that the radiant heat protective cover is installed on the assembly of water back and cover, makes radiant heat protective cover and water back and overlap electric insulation.
14. electric heater as claimed in claim 13 is characterized in that, this dielectric pin assembly comprises a ceramic component with through hole, and the interior dielectric pin of through hole that is inserted into this ceramic component.
15. electric heater as claimed in claim 14 is characterized in that, this dielectric pin is divided into two parts in the dielectric pin assembly, and making provides predetermined gap between two parts of the dielectric pin of ceramic component.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030038035 | 2003-06-12 | ||
| KR10-2003-0038035A KR100534081B1 (en) | 2003-06-12 | 2003-06-12 | Electric heating module manufacturing process using a jig and the electric heating module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1806469A CN1806469A (en) | 2006-07-19 |
| CN100531476C true CN100531476C (en) | 2009-08-19 |
Family
ID=36580483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800163696A Expired - Fee Related CN100531476C (en) | 2003-06-12 | 2004-06-01 | Electric heating module manufacturing process using a jig and the electric heating module |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR100534081B1 (en) |
| CN (1) | CN100531476C (en) |
| DE (1) | DE112004001022T5 (en) |
| WO (1) | WO2004112433A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200457946Y1 (en) * | 2010-09-01 | 2012-01-12 | 한일전기엠엠씨 주식회사 | Electric stove having a dual heater |
| KR200457947Y1 (en) * | 2010-09-13 | 2012-01-12 | 한일전기엠엠씨 주식회사 | Electric stove having a overvoltage blocking function |
| KR101340424B1 (en) * | 2012-02-27 | 2013-12-10 | (주)주영 | AlN hot plate for high temperature processing |
| JP6416794B2 (en) * | 2013-06-14 | 2018-10-31 | サンドビック株式会社 | Molybdenum disilicide ceramic heating element holding structure |
| WO2017151975A1 (en) * | 2016-03-02 | 2017-09-08 | Watlow Electric Manufacturing Company | Bare heating elements for heating fluid flows |
| EP3214284B1 (en) * | 2016-03-03 | 2019-03-13 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust gas system, in particular for an internal combustion engine of a vehicle |
| DE102016107213A1 (en) | 2016-03-03 | 2017-09-07 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust system, in particular for an internal combustion engine of a vehicle |
| DE102017203546B4 (en) * | 2017-03-03 | 2023-08-03 | Vitesco Technologies GmbH | Catalytic converter with electrically heated heated disc |
| FR3077330B1 (en) | 2018-02-01 | 2020-03-13 | Faurecia Systemes D'echappement | EASY-HANDLING HEATER FOR VEHICLE EXHAUST GAS PURIFICATION DEVICE |
| KR102157476B1 (en) * | 2018-02-14 | 2020-09-21 | (주)알파플러스 | Heater and insulator assembly for vacuum effusion cell |
| FR3080148B1 (en) * | 2018-04-11 | 2020-03-20 | Faurecia Systemes D'echappement | EXHAUST LINE, EXHAUST PURIFICATION DEVICE, AND METHOD FOR MANUFACTURING THE PURIFICATION DEVICE |
| CN109008673B (en) * | 2018-10-29 | 2023-12-22 | 廊坊开发区利仁电器有限公司 | Frying and baking machine and electrode protection device thereof |
| CN110206622B (en) * | 2019-06-04 | 2021-07-27 | 亿达天地环保技术股份有限公司 | Electric heating waste gas treatment device with double-layer sleeve structure |
| DE102019218354A1 (en) | 2019-11-27 | 2021-05-27 | Vitesco Technologies GmbH | Device for exhaust aftertreatment |
| US20210301702A1 (en) | 2020-03-31 | 2021-09-30 | Johnson Matthey Public Limited Company | Exhaust gas joule heater |
| DE202020104976U1 (en) * | 2020-08-28 | 2020-10-06 | Hjs Emission Technology Gmbh & Co. Kg | Electric heating unit for switching on in the exhaust system of an internal combustion engine as well as exhaust gas cleaning unit equipped with it |
| WO2022115346A1 (en) * | 2020-11-26 | 2022-06-02 | Corning Incorporated | Catalyst heater with serpentine concentric segments |
| EP4060169B1 (en) | 2021-03-15 | 2024-04-03 | Purem GmbH | Exhaust heater |
| DE102022127837A1 (en) * | 2022-10-21 | 2024-05-02 | Tenneco Gmbh | Bearing for radiator electrode |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05326118A (en) * | 1992-05-19 | 1993-12-10 | Kawai Denki Seisakusho:Kk | Rod heater, manufacturing jig therefor, and manufacture of rod heater |
| JPH0964528A (en) * | 1995-08-29 | 1997-03-07 | Mitsubishi Electric Corp | Heating jig for soldering |
-
2003
- 2003-06-12 KR KR10-2003-0038035A patent/KR100534081B1/en not_active IP Right Cessation
-
2004
- 2004-06-01 DE DE112004001022T patent/DE112004001022T5/en not_active Ceased
- 2004-06-01 CN CNB2004800163696A patent/CN100531476C/en not_active Expired - Fee Related
- 2004-06-01 WO PCT/KR2004/001302 patent/WO2004112433A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004112433A1 (en) | 2004-12-23 |
| DE112004001022T5 (en) | 2006-06-29 |
| KR20040107146A (en) | 2004-12-20 |
| KR100534081B1 (en) | 2005-12-07 |
| CN1806469A (en) | 2006-07-19 |
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