CN103743112B - Large section duct uniform flow field electric heater unit - Google Patents
Large section duct uniform flow field electric heater unit Download PDFInfo
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- CN103743112B CN103743112B CN201410007061.0A CN201410007061A CN103743112B CN 103743112 B CN103743112 B CN 103743112B CN 201410007061 A CN201410007061 A CN 201410007061A CN 103743112 B CN103743112 B CN 103743112B
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- high temperature
- temperature resistant
- isolation
- metal
- coupling assembling
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- 239000002184 metal Substances 0.000 claims abstract description 78
- 229910052751 metal Inorganic materials 0.000 claims abstract description 78
- 238000010438 heat treatment Methods 0.000 claims abstract description 72
- 238000002955 isolation Methods 0.000 claims abstract description 67
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 66
- 230000008878 coupling Effects 0.000 claims abstract description 49
- 238000010168 coupling process Methods 0.000 claims abstract description 49
- 238000005859 coupling reaction Methods 0.000 claims abstract description 49
- 239000004568 cement Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229920001342 Bakelite® Polymers 0.000 claims description 6
- 239000004637 bakelite Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 235000015250 liver sausages Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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Abstract
The present invention discloses a kind of large section duct uniform flow field electric heater unit with current stabilization effect, comprise air channel liner micarex, air channel load metallic plate, high temperature resistant porcelain isolation fastener, metal triangular ripple heating tape, heating tape coupling assembling, coupling assembling insulating cement plank, metal triangular ripple heating tape, it is by high temperature resistant porcelain isolation fastener, metal triangular ripple heating tape connects location by upper trough to lower crest rhombus mode, on the heating tape coupling assembling of left and right two sides, by design, electric string connection are carried out to by the coupling assembling set bolt of transferring in metal triangular ripple heating tape, again by electric power power regulating eqiupment, temperature controller, temperature sensor composition control loop, evenly, control exactly air velocity distribution heating-up temperature. large section duct uniform flow field electric heater unit of the present invention, can be according to heating power along air current flow direction, the width of design heating metal tape, can obtain high-quality, uniform temperature air velocity distribution thereby reach the object of controlling heat exchange area.
Description
Technical field:
The present invention relates to a kind of electric heater unit, particularly a kind of large section duct uniform flow field electric heater unit.
Background technology:
In heating field, large section duct uniform air flow flow field, at present, also do not have stream field disturbance little, quick, even,Heater means accurately. Along with scientific and technical development, need to heat large section duct uniform air flow flow field, justUnder research different temperatures flow field state, the various characteristics of experimental rig in large section duct uniform air flow flow field. Therefore,Need a kind of heater, do not destroy shortly the air velocity distribution uniformity, can carry out evenly for large section duct air velocity distribution again,Accurately heating.
Summary of the invention:
The invention provides one can fast, evenly, accurately heat large section duct air velocity distribution, meanwhile, and heaterStream field disturbance is less, can carry out current stabilization to air velocity distribution again.
The present invention adopts following technical scheme: a kind of large section duct uniform flow field electric heater unit, it comprises air channel linerMicarex, air channel load metallic plate, high temperature resistant porcelain isolation fastener, metal triangular ripple heating tape, heating tape coupling assembling andInsulating cement plank, offers square opening on the load metallic plate of described air channel, the projection embedding on described insulating cement plankEnter in described square opening, described air channel is passed through through the position of air channel load metallic plate in described metal triangular ripple heating tapeLoad metallic plate inside and outside coordinate with air channel liner micarex and with air channel load metallic plate electric upper completely insulation, described metalTriangular wave heating tape is triangular wave shape, and described air channel liner cloud is all passed respectively at the two ends of described metal triangular ripple heating tapeMotherboard and insulating cement plank, electricity is carried out by described high temperature resistant porcelain isolation fastener in described neighbouring metal triangular ripple heating tapeAir bound is from, traction location.
Described metal triangular ripple heating tape connects location by upper trough to lower crest rhombus mode.
On the liner micarex of described air channel, be formed with liner micarex spacing hole, on described insulating cement plank, be formed with insulating cementPlank spacing hole, described liner micarex spacing hole and insulating cement are all passed respectively in the two ends of described metal triangular ripple heating tapePlank spacing hole.
Described high temperature resistant porcelain isolation fastener is by isolating in insulated column, high temperature resistant porcelain isolation fastener on high temperature resistant porcelain isolation fastenerUnder post, high temperature resistant porcelain isolation fastener, insulated column and the high temperature resistant porcelain isolation fastener that is positioned at high temperature resistant porcelain isolation fastener two ends are fixedEnd and high temperature resistant porcelain isolation fastener movable end, described high temperature resistant porcelain isolation fastener stiff end and high temperature resistant porcelain isolate on fastener everyFrom insulated column composition E shape structure under insulated column in post, high temperature resistant porcelain isolation fastener and high temperature resistant porcelain isolation fastener and be fired intoOne, as isolation fastener body, offers three and ties with E shape on the cylinder of described high temperature resistant porcelain isolation fastener movable endThe perforation through hole that structure isolation fastener body coordinates, described high temperature resistant porcelain isolation fastener movable end also offer a high temperature resistant porcelain everyFrom fastener lockpin hole, the bearing of trend phase of the bearing of trend of described perforation through hole and described high temperature resistant porcelain isolation fastener lockpin holeVertically.
According to heating power, design regulates the width of described metal triangular ripple heating tape.
Described large section duct uniform flow field electric heater unit also includes and connects air channel liner micarex and air channel load goldBelong to the liner micarex set bolt of plate and the bakelite plate set bolt of connection air channel load metallic plate and insulating cement plank.
Described large section duct uniform flow field electric heater unit also includes coupling assembling metal pedestal, for being fastenedly connected connectionThe coupling assembling metal pedestal set bolt of component metals seat and insulating cement plank, coupling assembling conduction red copper piece, heating of metalBand compresses metal derby and coupling assembling metal tape hold-down bolt, and described metal triangular ripple heating tape exit is placed on described companyConnected components conduction red copper piece and heating metal strip compress between metal derby, use described coupling assembling metal tape hold-down bolt to incite somebody to actionCoupling assembling conduction red copper piece, heating metal strip compression metal derby are connected with coupling assembling metal pedestal, spinning is fastening.
Described large section duct uniform flow field electric heater unit also includes the connection of composition coupling assembling row's guard spaceComponent protection box wall and coupling assembling protection lid.
The present invention has following beneficial effect:
(1) a kind of diamond-mesh structure provided by the invention, large section duct electric heater unit, along air current flow sideTo can, according to heating power, designing the width of heating metal tape, reach the object of controlling heat exchange area;
(2) the present invention can also, by design, not increase under the prerequisite of flow resistance, changes rhombus circulation area,Reach the object of controlling heat exchange area, thereby can obtain high-quality, uniform temperature air velocity distribution.
Brief description of the drawings:
Fig. 1 is favorable current flow direction structural representation of the present invention.
Fig. 2 is heating triangular wave metallic strip structures schematic diagram.
Fig. 3 is high temperature resistant porcelain isolation fastener structures schematic diagram.
Fig. 4 diamond-mesh electrical heating air channel side view and coupling assembling row figure.
Fig. 5 diamond-mesh electrical heating air channel coupling assembling cutaway view.
Fig. 6 diamond-mesh electrical heating air-duct apparatus load-carrying construction schematic diagram.
Fig. 7 insulating cement plank schematic diagram.
Fig. 8 liner micarex schematic diagram.
Fig. 9 connecting component structure schematic diagram.
Wherein:
1. upper and lower fixing metal band; 2. air channel liner micarex; 3. air channel load metallic plate; 4. high temperature resistant porcelain isolation fastener;5. metal triangular ripple heating tape; 6. air channel adpting flange; 7. heating tape coupling assembling; 8. insulating cement plank; 9. connection groupPart metal pedestal; 10. coupling assembling conduction red copper piece; 11. coupling assembling metal tape hold-down bolts; 12. heating of metal are with pressureTight metal derby; 13. coupling assembling switching set bolts; 14. coupling assembling protection box walls; 15. coupling assembling protection lids;16. coupling assembling metal pedestal set bolts; 17. bakelite plate set bolts; 18. liner micarex set bolts; 19. insulationBakelite plate spacing hole; 20. liner micarex spacing holes; 4_1. is high temperature resistant, and porcelain is isolated fastener stiff end; 4_2. high temperature resistantInsulated column on porcelain isolation fastener; 4_3. is high temperature resistant, and porcelain is isolated insulated column in fastener; Under 4_4. is high temperature resistant porcelain isolation fastener everyFrom post; 4_5. is high temperature resistant, and porcelain is isolated fastener movable end; 4_6. is high temperature resistant, and porcelain is isolated fastener lock pin; 4_7. is high temperature resistant porcelainIsolation fastener lockpin hole.
Detailed description of the invention:
Please refer to shown in Fig. 1, it is diamond-mesh electrical heating air-duct apparatus favorable current flow direction profile, metal triangular rippleThe width of heating tape 5 moves towards downstream direction, meets air-flow face and forms diamond-mesh structure, its objective is and reduces as far as possible gasStream when the diamond-mesh electrical heating air-duct apparatus, the air current flow resistance of generation, reduces the disturbance to uniform flow field simultaneously.The width of metal triangular ripple heating tape 5 can adjust, and can regulate metal triangular ripple heating tape 5 wide according to heating power designDegree, also can design and regulate favorable current flow direction, and the rhombus circulation area that upper and lower metal triangular ripple heating tape forms, changesUnsteady flow is led to heat exchange area, controls heating power.
The load-carrying construction of diamond-mesh electrical heating air-duct apparatus is that metallic sheet material is welded, and is metal triangular ripple to be installed addThe brace foundation of the torrid zone, coupling assembling, and have the adpting flange that connects air channel, front and back, see Fig. 6. For ensureing metal triangularElectric insulation between ripple heating tape and air channel metal structure all has length on the air channel of air channel wall load metallic plate 3Square opening, embeds for insulating cement plank 8 projections, sees Fig. 7, and inside and outside coordinates with air channel liner micarex 2Insulated completely through the position of air channel load metallic plate 3 in metal triangular ripple heating tape 5 isolated, guarantee that metal triangular ripple addsWhen draw by air channel load metallic plate 3 in the torrid zone 5, with the electric upper insulation completely of air channel load metallic plate 3. Air channel linerMicarex 2 is connected with air channel load metallic plate 3 use liner micarex set bolts 18 as air channel inwall, bakelitePlate 8 is installed basis and air channel load metallic plate 3 use bakelite plate set bolts 17 as heating tape coupling assembling 7 electric insulationsConnect, air channel and coupling assembling cutaway view are shown in Fig. 5.
In heating air duct, metal triangular ripple heating tape 5 can be installed by horizontal mode or vertical mode, horizontal mode peaceFill the electrical connection of metal triangular ripple heating tape and complete at left and right, outside, air channel two ends, the metal of lower air duct inwall in connectionBand only provides vertical direction to draw up and down fixation; Vertical direction is installed the electrical connection of metal triangular ripple heating tape and is existedOutside air channel, upper and lower two ends complete, and the metal tape that connects air channel, left and right inwall only provides the traction of horizontal direction left and right fixing workWith; In this detailed description of the invention, be illustrated with horizontal mounting means. Metal triangular in air channel air-flow passes through regionRipple heating tape 5 is processed to triangular wave shape, and two ends pass respectively spacing hole 20 and the bakelite of liner micarex 2The insulating cement plank spacing hole 19 of plate 8, is shown in Fig. 7, Fig. 8. Be drawn out to that coupling assembling row is fixed, electrical interconnecting,See Fig. 4, Fig. 5. Neighbouring metal triangular ripple heating tape 5 by high temperature resistant porcelain isolation fastener 4 carry out electrical isolation,Traction location.
Please refer to shown in Fig. 3, wherein high temperature resistant porcelain isolation fastener 4 is by insulated column 4_2, resistance on high temperature resistant porcelain isolation fastenerInsulated column 4_4 and be positioned at high temperature resistant porcelain isolation and buckle under insulated column 4_3, high temperature resistant porcelain isolation fastener in pate dure isolation fastenerHigh temperature resistant porcelain isolation fastener stiff end 4_1, the high temperature resistant porcelain isolation fastener movable end 4_5 at part 4 two ends. Wherein high temperature resistantPorcelain isolation fastener stiff end 4_1 and three isolation porcelain cylinder composition E shape structures are also fired into one, as isolation fastener masterBody, high temperature resistant porcelain isolation fastener movable end 4_5 is made into movable porcelain circle porcelain knob, and cylinder open three with E shape structure everyCoordinate and connect through hole from fastener body, insulated column on high temperature resistant porcelain isolation fastener movable end 4_5 and high temperature resistant porcelain isolation fastenerTri-isolation porcelain circles of insulated column 4_4 under insulated column 4_3 and high temperature resistant porcelain isolation fastener in 4_2, high temperature resistant porcelain isolation fastenerPost has a high temperature resistant porcelain isolation fastener lockpin hole 4_7. When high temperature resistant porcelain isolation fastener is installed, with E shape structure isolation buttonThe upper and lower opening of part main body, through the trough of upper metal triangular ripple heating tape 5 and the crest of lower metal triangular ripple heating tape 5,Form a rhombus, by insulated column 4_2, high temperature resistant porcelain on the high temperature resistant porcelain isolation fastener of E shape structure isolation fastener bodyIn isolation fastener, under insulated column 4_3, high temperature resistant porcelain isolation fastener, tri-isolation porcelain cylinders of insulated column 4_4 insert high temperature resistant porcelainThe perforation through hole of isolation fastener movable end 4_5, inserts pin-and-hole, the fixing a pair of adjacent metal triangular wave heating in location with pinTrough and the crest of band.
Metal triangular ripple heating tape 5 is the liner micarex spacing hole 20 through air channel liner micarex 2 from left and right horizontal two endsWith the insulating cement plank spacing hole 19 of insulating cement plank, be drawn out to about outside, air channel two end coupling assemblings fixed, electricCyclostrophic connects, and coupling assembling metal base 9 is fastenedly connected with insulating cement plank 8 use coupling assembling metal pedestal set bolts 16,Metal triangular ripple heating tape exit be placed on coupling assembling conduction red copper piece 10 and heating metal strip compress metal derby 12 itBetween, use coupling assembling metal tape hold-down bolt 11 is connected with coupling assembling metal pedestal 9, spinning is fastening, coupling assemblingSwitching set bolt 13 provides between each heating tape coupling assembling 7, outside the series, parallel on electric connects or connectsPortion's cable. Coupling assembling protection box wall 14 and coupling assembling protection lid 15 form coupling assembling row's guard space, anti-Only generation personnel touch danger, foreign object erosion damage.
Vertical direction is close to the band of fixing metal up and down 1 of upper and lower wind path wall, uses equally high temperature resistant porcelain isolation fastener 4 and goldBelong to heating tape and be connected and fixed by trough and crest rhombus mode, and from two ends vertically through air channel liner micarex 2The insulating cement plank spacing hole 19 of liner micarex spacing hole 20 and insulating cement plank 8, guides to outside, air channel and connects up and downAssembly is fixed.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make under the premise without departing from the principles of the invention some improvement, these improvement also should be considered as of the present inventionProtection domain.
Claims (8)
1. a large section duct uniform flow field electric heater unit, is characterized in that: comprise air channel liner micarex (2),Air channel load metallic plate (3), the isolation of high temperature resistant porcelain fastener (4), metal triangular ripple heating tape (5), heating tape connection groupPart (7) and insulating cement plank (8), offer square opening on described air channel load metallic plate (3), described insulating cementProjection on plank (8) is embedded in described square opening, and described metal triangular ripple heating tape (5) is through air channelInside and outside join by described air channel load metallic plate (3) and air channel liner micarex (2) at the position of load metallic plate (3)Close and with air channel load metallic plate (3) electric upper completely insulation, described metal triangular ripple heating tape (5) is triangular waveformShape, described air channel liner micarex (2) and insulating cement are all passed respectively in the two ends of described metal triangular ripple heating tape (5)Plank (8), neighbouring metal triangular ripple heating tape (5) is undertaken electric by described high temperature resistant porcelain isolation fastener (4)Isolation, traction location.
2. large section duct uniform flow field electric heater unit as claimed in claim 1, is characterized in that: described metalTriangular wave heating tape (5) connects location by upper trough to lower crest rhombus mode.
3. large section duct uniform flow field electric heater unit as claimed in claim 1, is characterized in that: described air channelOn liner micarex (2), be formed with liner micarex spacing hole (20), on described insulating cement plank (8), be formed with absolutelyEdge bakelite plate spacing hole (19), described liner micarex is all passed respectively at the two ends of described metal triangular ripple heating tape (5)Spacing hole (20) and insulating cement plank spacing hole (19).
4. large section duct uniform flow field electric heater unit as claimed in claim 1, is characterized in that: described resistance to heightTemperature porcelain isolation fastener (4) comprises on high temperature resistant porcelain isolation fastener and isolating in insulated column (4_2), high temperature resistant porcelain isolation fastenerInsulated column (4_4) and be positioned at the resistance to of high temperature resistant porcelain isolation fastener (4) two ends under post (4_3), high temperature resistant porcelain isolation fastenerPate dure isolation fastener stiff end (4_1) and high temperature resistant porcelain isolation fastener movable end (4_5), described high temperature resistant porcelain isolationFastener stiff end (4_1) is isolated insulated column in insulated column (4_2) on fastener, high temperature resistant porcelain isolation fastener with high temperature resistant porcelain(4_3) isolating insulated column (4_4) under fastener with high temperature resistant porcelain forms E shape structure and is fired into one as isolation fastenerMain body offers three and buckles with the isolation of E shape structure on the cylinder of described high temperature resistant porcelain isolation fastener movable end (4_5)The perforation through hole that part main body coordinates, described high temperature resistant porcelain isolation fastener movable end (4_5) also offer a high temperature resistant porcelain everyFrom fastener lockpin hole (4_7), the bearing of trend of described perforation through hole and described high temperature resistant porcelain isolation fastener lockpin hole (4_7)Bearing of trend perpendicular.
5. large section duct uniform flow field electric heater unit as claimed in claim 1, is characterized in that: described metalAccording to heating power, design regulates the width of triangular wave heating tape (5).
6. large section duct uniform flow field electric heater unit as claimed in claim 1, is characterized in that: described large sectionFace air channel uniform flow field electric heater unit also includes and connects air channel liner micarex (2) and air channel load metallic plate (3)Liner micarex set bolt (18) and connect air channel load metallic plate (3) and the bakelite plate of insulating cement plank (8)Set bolt (17).
7. large section duct uniform flow field electric heater unit as claimed in claim 6, is characterized in that: described heavy in sectionAir channel uniform flow field electric heater unit also includes coupling assembling metal pedestal (9), for being fastenedly connected coupling assembling metal pedestal(9) with the coupling assembling metal pedestal set bolt (16) of insulating cement plank (8), coupling assembling conduction red copper piece (10),Heating metal strip compresses metal derby (12) and coupling assembling metal tape hold-down bolt (11), described metal triangular ripple heatingBand (5) exit is placed on described coupling assembling conduction red copper piece (10) and compresses metal derby (12) with heating metal stripBetween, use described coupling assembling metal tape hold-down bolt (11) that coupling assembling is conducted electricity to red copper piece (10), heating goldGenus band compression metal derby (12) is connected with coupling assembling metal pedestal (9), spinning is fastening.
8. large section duct uniform flow field electric heater unit as claimed in claim 7, is characterized in that: described large sectionFace air channel uniform flow field electric heater unit also includes the coupling assembling protection box wall of composition coupling assembling row's guard spaceAnd coupling assembling protection lid (15) (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007061.0A CN103743112B (en) | 2014-01-07 | 2014-01-07 | Large section duct uniform flow field electric heater unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007061.0A CN103743112B (en) | 2014-01-07 | 2014-01-07 | Large section duct uniform flow field electric heater unit |
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| Publication Number | Publication Date |
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| CN103743112A CN103743112A (en) | 2014-04-23 |
| CN103743112B true CN103743112B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410007061.0A Active CN103743112B (en) | 2014-01-07 | 2014-01-07 | Large section duct uniform flow field electric heater unit |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2359619Y (en) * | 1998-10-16 | 2000-01-19 | 沈财源 | Electric heating warm-air machine |
| DE10229547A1 (en) * | 2002-07-01 | 2004-01-15 | Att Automotive Thermo Tech Gmbh | Device for direct electric air heating has resistance consisting of two or more layers of zigzag strips of folded heating ribs separated by intermediate layers of electrically insulating material |
| DE202006017352U1 (en) * | 2006-11-14 | 2007-01-11 | Gao, Tianyu | Electrical connecting structure for air warming device, has one electrical contact arranged in another contact on side surface in proximity to upper part of PTC-heating module, and third contact arranged at upper part of module |
| CN101769595A (en) * | 2008-12-30 | 2010-07-07 | 乐金电子(天津)电器有限公司 | Electrically-assisted heating device of air conditioner |
| CN102840666A (en) * | 2011-08-20 | 2012-12-26 | 南通突优科技创业有限公司 | Pipeline hot air generator |
| CN102933917A (en) * | 2010-04-02 | 2013-02-13 | I.R.C.A.（共同）股份公司工业铠装及类似电阻 | Electric air heater, in particular for electrical domestic appliances |
| CN202907238U (en) * | 2012-11-16 | 2013-04-24 | 陕西子竹电子有限公司 | Tunnel kiln air duct heater |
| CN103292474A (en) * | 2013-05-13 | 2013-09-11 | 镇江市东方节能设备有限公司 | Air channel heating device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013217529A (en) * | 2012-04-05 | 2013-10-24 | Masakatsu Kobayashi | Hot air generator |
| PL398907A1 (en) * | 2012-04-20 | 2013-10-28 | Formaster Spólka Akcyjna | A resistance heating element |
-
2014
- 2014-01-07 CN CN201410007061.0A patent/CN103743112B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2359619Y (en) * | 1998-10-16 | 2000-01-19 | 沈财源 | Electric heating warm-air machine |
| DE10229547A1 (en) * | 2002-07-01 | 2004-01-15 | Att Automotive Thermo Tech Gmbh | Device for direct electric air heating has resistance consisting of two or more layers of zigzag strips of folded heating ribs separated by intermediate layers of electrically insulating material |
| DE202006017352U1 (en) * | 2006-11-14 | 2007-01-11 | Gao, Tianyu | Electrical connecting structure for air warming device, has one electrical contact arranged in another contact on side surface in proximity to upper part of PTC-heating module, and third contact arranged at upper part of module |
| CN101769595A (en) * | 2008-12-30 | 2010-07-07 | 乐金电子(天津)电器有限公司 | Electrically-assisted heating device of air conditioner |
| CN102933917A (en) * | 2010-04-02 | 2013-02-13 | I.R.C.A.（共同）股份公司工业铠装及类似电阻 | Electric air heater, in particular for electrical domestic appliances |
| CN102840666A (en) * | 2011-08-20 | 2012-12-26 | 南通突优科技创业有限公司 | Pipeline hot air generator |
| CN202907238U (en) * | 2012-11-16 | 2013-04-24 | 陕西子竹电子有限公司 | Tunnel kiln air duct heater |
| CN103292474A (en) * | 2013-05-13 | 2013-09-11 | 镇江市东方节能设备有限公司 | Air channel heating device |
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| Publication number | Publication date |
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| CN103743112A (en) | 2014-04-23 |
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