CA1287764C - Heater for asphalt pavement or the like - Google Patents
Heater for asphalt pavement or the likeInfo
- Publication number
- CA1287764C CA1287764C CA 566356 CA566356A CA1287764C CA 1287764 C CA1287764 C CA 1287764C CA 566356 CA566356 CA 566356 CA 566356 A CA566356 A CA 566356A CA 1287764 C CA1287764 C CA 1287764C
- Authority
- CA
- Canada
- Prior art keywords
- sections
- section
- combustible mixture
- blanket
- fiber blanket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000004443 Ricinus communis Nutrition 0.000 claims description 3
- 240000000528 Ricinus communis Species 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 239000001294 propane Substances 0.000 claims description 2
- 230000032258 transport Effects 0.000 abstract 1
- 230000008439 repair process Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000011384 asphalt concrete Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Road Repair (AREA)
Abstract
ABSTRACT
A light weight surface heater suitable for repairing asphalt pavement, or the like, conveniently folds for trail-ering. Air and gaseous fuel are mixed and forced down through refractory blanket to burn on its lower surface radiating heat to the roadway. A hinged middle allows one half of the heater with trailer tongue and tires attached to its top to be folded upside down underneath the other half during trans-port.
A light weight surface heater suitable for repairing asphalt pavement, or the like, conveniently folds for trail-ering. Air and gaseous fuel are mixed and forced down through refractory blanket to burn on its lower surface radiating heat to the roadway. A hinged middle allows one half of the heater with trailer tongue and tires attached to its top to be folded upside down underneath the other half during trans-port.
Description
68~72-327 sACKGRO ND OE' THE INVENTION
This invention relates generally to asphalt concrete repair apparatus and more particularly to heating units utili~ed to soEten areas of asphalt pavement.
The idea of heating existing asphalt pavement where it lies on the roadway in order to rejuvenate and make repairs is an old one and a good one. It eliminates lifting and -truck-ing the old asphal-t away as well as buying all new asphalt concrete to truck in and spread.
A variety of asphalt heating machines have been produced. They have employed direct flame, s-team, microwaves, infrared radiation, and etc. to convey heat into the road sur-face. The best rnachine for the application would quickly and safely get -the heat in for the lowest cost.
It was t'ne intent of the inventor to produce an in-expensive and maneuverable infrared heating rnachine that could effectively heat asphalt roadways. Experirnents with forcing combustible air and gas mixture through refractory blanket showed that the blanket could be used as an efficient radiant surface burner medium. Its flexibility and lightweight ideally suited it to use in such a machine. The weight was so decreased by its use instead of rigid refractory material that it was possible to handle over 60 square feet of heating sur-face manually, eliminating the cost and weight of hydraulics or winches. Complete mobility of the heater speeded repairs and allowed them to be done at any angle to the road.
The light weight made possible the folcllng traller enclosure for the hea~er. Liftin~ at the hlnged mlddle folds the machine in half into the trailaring posi~ion whlch pro~ects the burner medium during transport and ellminates the neecl for a separate trailer. A separate trailer would be in the way behind the towing vehicle which may be advantageously used to carry asphalt. The eiimination o wei~ht made tha heater more useable and decreased its cost.
SUMMARY OF THE I~VENTION
The ob~ect of this invention is to provlde a new and improved apparatus for heating the upper surface of asphalt pavement in preparation for repairs.
Briefly, the lnvention is a folding asphalt heater, comprising: a heating chamber having first and second sections connected by a hinge; a trailer tongue and trailer tires attached to said first section; means for folding said first and second sections, such that said folded sections are supported by said trailer tires; and said trailer tongue extendlng horizontally from said Eolded sections.
The chamber is preferably constructed in two halves which are hinyed together. I.ifting the middle along the hinge joint stands the halves on edge and folds them toyether. A
slight sideways pull tips the folded machine down onto the trailer tires and tongue which are permanently attached to what may now be called the bottom half. The upper half has a blower, control valves, and fuel tanks aktached which supply both halves of the heating chamber with combustible air and fuel mixture through mixing channels and supply manifolds.
Refractory ceramic fiber blanket lines the roof of both halves of the heating chamber. This blanket emits intense infrared radiation when the combustible mixture is forced down through ~77~
it and burned along its lower sur~aces.
Many other features and advantageæ o~ the inverltion will be m~re ully realized and unders~ood from the followlncJ
detailed deseription of the preferred embodiment when ~aken :Ln con~unction wlth the accompanying drawings. Reierence numerals throughout the various illustrations are intended ~o desicJnate similar components or elements.
2a 68~72-327 BRIEF DESCRIPq'ION OE' THE DR~WINGS
Fi~_re 1 Figure I ls a sideview of a fold.ing asLjtla:Lt heater in its folded out posit:ion as it would be while heating pavement.
F`igure 2 Figure 2 is a sideview of the machine in figure :L
midway between folded out and trailering positions.
Figure 3 Figure 3 is a sideview of the machine in Eigure 1 and figure 2 in its trai1ering position as it would be while in tow.
E`igure 4 Figure 4 is a cross sectional view of the heating element which is incorporated in the folding asphalt heater.
DETAILED DESCRIPTION OE' THE PREFERRED EM~ODIMENT
Referring to figure 1 there is seen a side view of a ~olding asphalt heater that is generally designated by reference number 10. The folding asphalt heater 10 is con-structed of two sections 11 and :L2 held together by a hinge 13 between them. Castors 14 located on each o-f -the four corners of the folding asphalt heater 10 allow manual positioning over the desired areas oE pavement.
A blower 15 is ran continuously to supply constant pressure air to an air channel 16 which i5 mounted on the top of section 11. Fuel such as propane is stored in removable tanks 17. The flow of fuel from the tanks into the continuous air stream produced by the blower 15 is regulated by manually operated control valves located in the control panel 18 to produce a combustible mixture.
The two trailer tires 19 and a trailer tongue 20 are attached to the top of section 12. A cover 21 is attached by a hinge 22 to the corner of section 12 and rests on the top of section 11.
~ 7~ 68572-327 ReEerring now to figure 2 the hinged middle of the folding asphalt heate~ L0 has been liEted to make clear t'he action oE its various parts during foLdinc3. T'he trailer tongue 20 is protruding upward and the cover 2L is pivoting at its hinge 22. Section 12 is resting solidly on the ground while section 11 is rolling toward it on its castors 14.
Referring now to figure 3, sections 11 and 12 are together and have their combined weight supported by the trailer tires 19. The cover 21 is in place protecting the 10 hinge ends of sections 11 and 12. The tongue 20 is protruding horizontally to be connected to a tow vehicle.
Referring now to figure 4, there is seen a cross section view of either section 11 or 12. The outer shell 23 forms a manifold 24 where uel/air combustible mixture coming from the mixing channel 25 is able to slow down and evenly distribute its pressure throughout manifold 24. Ceramic fiber blanket 26 forms the floor of the manifold 24 and the roof of the heating chamber 27. The fuel/air combustible mixture is forced down through the micro spaces between the fibers in the ceramic fiber blanket 26 to be burned across its lower surface, radiating heat downward. The ceramic fiber blanket 26 is squeezed at its perimeter 'between rigid bars 28 the upper of which is attached to the outer shell 23. This effectively seals the edges of the blanket 26 while holding it in place.
Shafts 29 attached to the outer shell 23 extend through the blanket 26. Washers 30 attached to the s'haf~s 29 squeeze and secure the blanket 26 between them. Heat and oxidation resis-tan-t nickel alloy wires 31 may be stretched between opposite sides of the lower rigid bars 28 to hold the blanket 26 in place.
This invention relates generally to asphalt concrete repair apparatus and more particularly to heating units utili~ed to soEten areas of asphalt pavement.
The idea of heating existing asphalt pavement where it lies on the roadway in order to rejuvenate and make repairs is an old one and a good one. It eliminates lifting and -truck-ing the old asphal-t away as well as buying all new asphalt concrete to truck in and spread.
A variety of asphalt heating machines have been produced. They have employed direct flame, s-team, microwaves, infrared radiation, and etc. to convey heat into the road sur-face. The best rnachine for the application would quickly and safely get -the heat in for the lowest cost.
It was t'ne intent of the inventor to produce an in-expensive and maneuverable infrared heating rnachine that could effectively heat asphalt roadways. Experirnents with forcing combustible air and gas mixture through refractory blanket showed that the blanket could be used as an efficient radiant surface burner medium. Its flexibility and lightweight ideally suited it to use in such a machine. The weight was so decreased by its use instead of rigid refractory material that it was possible to handle over 60 square feet of heating sur-face manually, eliminating the cost and weight of hydraulics or winches. Complete mobility of the heater speeded repairs and allowed them to be done at any angle to the road.
The light weight made possible the folcllng traller enclosure for the hea~er. Liftin~ at the hlnged mlddle folds the machine in half into the trailaring posi~ion whlch pro~ects the burner medium during transport and ellminates the neecl for a separate trailer. A separate trailer would be in the way behind the towing vehicle which may be advantageously used to carry asphalt. The eiimination o wei~ht made tha heater more useable and decreased its cost.
SUMMARY OF THE I~VENTION
The ob~ect of this invention is to provlde a new and improved apparatus for heating the upper surface of asphalt pavement in preparation for repairs.
Briefly, the lnvention is a folding asphalt heater, comprising: a heating chamber having first and second sections connected by a hinge; a trailer tongue and trailer tires attached to said first section; means for folding said first and second sections, such that said folded sections are supported by said trailer tires; and said trailer tongue extendlng horizontally from said Eolded sections.
The chamber is preferably constructed in two halves which are hinyed together. I.ifting the middle along the hinge joint stands the halves on edge and folds them toyether. A
slight sideways pull tips the folded machine down onto the trailer tires and tongue which are permanently attached to what may now be called the bottom half. The upper half has a blower, control valves, and fuel tanks aktached which supply both halves of the heating chamber with combustible air and fuel mixture through mixing channels and supply manifolds.
Refractory ceramic fiber blanket lines the roof of both halves of the heating chamber. This blanket emits intense infrared radiation when the combustible mixture is forced down through ~77~
it and burned along its lower sur~aces.
Many other features and advantageæ o~ the inverltion will be m~re ully realized and unders~ood from the followlncJ
detailed deseription of the preferred embodiment when ~aken :Ln con~unction wlth the accompanying drawings. Reierence numerals throughout the various illustrations are intended ~o desicJnate similar components or elements.
2a 68~72-327 BRIEF DESCRIPq'ION OE' THE DR~WINGS
Fi~_re 1 Figure I ls a sideview of a fold.ing asLjtla:Lt heater in its folded out posit:ion as it would be while heating pavement.
F`igure 2 Figure 2 is a sideview of the machine in figure :L
midway between folded out and trailering positions.
Figure 3 Figure 3 is a sideview of the machine in Eigure 1 and figure 2 in its trai1ering position as it would be while in tow.
E`igure 4 Figure 4 is a cross sectional view of the heating element which is incorporated in the folding asphalt heater.
DETAILED DESCRIPTION OE' THE PREFERRED EM~ODIMENT
Referring to figure 1 there is seen a side view of a ~olding asphalt heater that is generally designated by reference number 10. The folding asphalt heater 10 is con-structed of two sections 11 and :L2 held together by a hinge 13 between them. Castors 14 located on each o-f -the four corners of the folding asphalt heater 10 allow manual positioning over the desired areas oE pavement.
A blower 15 is ran continuously to supply constant pressure air to an air channel 16 which i5 mounted on the top of section 11. Fuel such as propane is stored in removable tanks 17. The flow of fuel from the tanks into the continuous air stream produced by the blower 15 is regulated by manually operated control valves located in the control panel 18 to produce a combustible mixture.
The two trailer tires 19 and a trailer tongue 20 are attached to the top of section 12. A cover 21 is attached by a hinge 22 to the corner of section 12 and rests on the top of section 11.
~ 7~ 68572-327 ReEerring now to figure 2 the hinged middle of the folding asphalt heate~ L0 has been liEted to make clear t'he action oE its various parts during foLdinc3. T'he trailer tongue 20 is protruding upward and the cover 2L is pivoting at its hinge 22. Section 12 is resting solidly on the ground while section 11 is rolling toward it on its castors 14.
Referring now to figure 3, sections 11 and 12 are together and have their combined weight supported by the trailer tires 19. The cover 21 is in place protecting the 10 hinge ends of sections 11 and 12. The tongue 20 is protruding horizontally to be connected to a tow vehicle.
Referring now to figure 4, there is seen a cross section view of either section 11 or 12. The outer shell 23 forms a manifold 24 where uel/air combustible mixture coming from the mixing channel 25 is able to slow down and evenly distribute its pressure throughout manifold 24. Ceramic fiber blanket 26 forms the floor of the manifold 24 and the roof of the heating chamber 27. The fuel/air combustible mixture is forced down through the micro spaces between the fibers in the ceramic fiber blanket 26 to be burned across its lower surface, radiating heat downward. The ceramic fiber blanket 26 is squeezed at its perimeter 'between rigid bars 28 the upper of which is attached to the outer shell 23. This effectively seals the edges of the blanket 26 while holding it in place.
Shafts 29 attached to the outer shell 23 extend through the blanket 26. Washers 30 attached to the s'haf~s 29 squeeze and secure the blanket 26 between them. Heat and oxidation resis-tan-t nickel alloy wires 31 may be stretched between opposite sides of the lower rigid bars 28 to hold the blanket 26 in place.
Claims (7)
1. A folding asphalt heater, comprising:
a heating chamber having first and second sections connected by a hinge;
a trailer tongue and trailer tires attached to said first section;
means for folding said first and second sections, such that said folded sections are supported by said trailer tires; and said trailer tongue extending horizontally from said folded sections.
a heating chamber having first and second sections connected by a hinge;
a trailer tongue and trailer tires attached to said first section;
means for folding said first and second sections, such that said folded sections are supported by said trailer tires; and said trailer tongue extending horizontally from said folded sections.
2. The asphalt heater according to claim 1 including a rigid cover attached by a hinge to the top of said first section along the junction of said first and second sections so that when said first section is folded under said second section, said cover moves into a position over the otherwise exposed hinge side of the box formed by said first and second sections.
3. The asphalt heater according to claim 1 including the attachment of castors to the outside corners of said sections which are useful both in positioning said heating chamber over pavement areas and in folding said first section under said second section.
4. The asphalt heater according to claim 1 wherein said heating chamber has a roof, a layer of high temperature refractory fiber blanket lined across said roof, said blanket being sealed about its perimeter by pressure of rigid bars and held from bulging down by a grid of heat and oxidation resistant nickel alloy wire stretched between opposite sides of said bars, said fiber blanket forms the boundary between said heating chamber and a pressurized gaseous combustible mixture supply manifold above so that combustible mixture is forced through said fiber blanket to burn on said blankets' lower surface radiating heat to the pavement below.
5. The asphalt heater according to claim 4 wherein the grid of heat and oxidation resistant wire is replaced for the purpose of holding said fiber blanket from bulging down by a plurality of shafts attached solidly to the underside of said combustible mixture manifold and extending through said fiber blanket with means at said junction to firmly attach to said fiber blanket.
6. The asphalt heater according to claim 4 further including air supply blower means connected with said pressurized gaseous combustible mixture supply manifold by way of a channel with an inlet for gaseous fuel, such as propane, near said supply blower means and means to create turbulent flow within said channel to achieve thorough mixing of air and fuel.
7. The asphalt heater of claim 1, 2 or 3 comprising a heating chamber with a roof, said roof is lined across its surface with high temperature refractory fiber blanket attached by support means and has means above said roof for directing a pressurized combustible mixture of air and gaseous fuel down through said blanket, said combustible mixture is burned on said fiber blankets' lower surface radiating heat downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 566356 CA1287764C (en) | 1988-05-10 | 1988-05-10 | Heater for asphalt pavement or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 566356 CA1287764C (en) | 1988-05-10 | 1988-05-10 | Heater for asphalt pavement or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1287764C true CA1287764C (en) | 1991-08-20 |
Family
ID=4138000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 566356 Expired CA1287764C (en) | 1988-05-10 | 1988-05-10 | Heater for asphalt pavement or the like |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1287764C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761537A (en) * | 2017-11-24 | 2018-03-06 | 无锡锡通工程机械有限公司 | Flange device for hot air chamber |
-
1988
- 1988-05-10 CA CA 566356 patent/CA1287764C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761537A (en) * | 2017-11-24 | 2018-03-06 | 无锡锡通工程机械有限公司 | Flange device for hot air chamber |
| CN107761537B (en) * | 2017-11-24 | 2023-03-31 | 无锡锡通工程机械有限公司 | Hot-blast case flange device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |