EP2434054A1 - Equipment for microwave heating of reconditioned asphalts roads - Google Patents

Equipment for microwave heating of reconditioned asphalts roads Download PDF

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Publication number
EP2434054A1
EP2434054A1 EP11466015A EP11466015A EP2434054A1 EP 2434054 A1 EP2434054 A1 EP 2434054A1 EP 11466015 A EP11466015 A EP 11466015A EP 11466015 A EP11466015 A EP 11466015A EP 2434054 A1 EP2434054 A1 EP 2434054A1
Authority
EP
European Patent Office
Prior art keywords
magnetron
equipment
heating
waveguide
microwave
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.)
Withdrawn
Application number
EP11466015A
Other languages
German (de)
French (fr)
Inventor
David Velvéthy
Radek Picha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Velveth Inlet Corp sro
Original Assignee
Velveth Inlet Corp sro
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Velveth Inlet Corp sro filed Critical Velveth Inlet Corp sro
Publication of EP2434054A1 publication Critical patent/EP2434054A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/14—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces for heating or drying foundation, paving, or materials thereon, e.g. paint
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/642—Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/701—Feed lines using microwave applicators
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings

Definitions

  • This Utility Model applies to a microwave heating equipment for asphalt road repairs, especially for the repairs of potholes or cracks in asphalt roads. Heating of the repaired spots in asphalt roads using this equipment ensures homogeneous joining of the added mixture with the original asphalt surface of the road.
  • asphalt roads are repaired without heating the area around the repaired spot, or with the heating applied immediately before adding the asphalt mixture into the damaged spot in the road, which is more expensive.
  • a water-permeable line forms between the new and the original asphalt surface of the road. This causes yet further damage to the road, starting right in this permeable line. Therefore, the repairs of asphalt roads are more frequently performed with heating applied on the repaired spots, which ensures a significantly higher quality of the repair.
  • the heating is performed either using the devices with gas burners, mostly propane-butane, or more sophisticated equipment that uses infra-red radiation. In both cases, the heat is transferred to the subsurface layer of the repaired spot through penetration.
  • each magnetron with a waveguide is equipped with a fan to cool the magnetron and divert heat from its surroundings.
  • the heat from the surroundings of the magnetron is removed through an adjacent channel to the area of the waveguide.
  • Each set of a magnetron with a waveguide, fan and adjacent heat diversion channel forms an independent integrated heating unit.
  • the required number of units is mounted in a mobile frame, which is equipped with casters. Around the circumference of the bottom of the mobile frame there is a chain screen to prevent the escape of microwave radiation.
  • the heating unit is secured by a system of safety switches, which are connected with the control unit of this equipment.
  • the microwave heating equipment for asphalt road repairs under this Utility Model represents a new and efficient device for heating of the repaired spots, whose integration in the process of repairs of asphalt roads will ensure significant improvement in the quality of repairs and consequently a better durability of the repaired spots.
  • the attached schematic drawing represents a model design of the microwave heating equipment for asphalt road repairs under this Utility Model.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Road Repair (AREA)

Abstract

A microwave heating equipment for asphalt road repairs, containing two microwave heating units (11), which are located in a mobile frame (7). The heat source of each heating unit (11) is a magnetron (1), which generates microwave radiation at the frequency of 2.45 GHz. Next to the magnetron (1), there is a waveguide (2) designed to guide and aim the microwave radiation from the magnetron (1) to the repaired spot on the road (10). Further, the heating unit (11) contains a fan (3) to cool the magnetron (1) and to divert the heat from its surroundings towards the waveguide (2). The mobile frame (7) is equipped with casters (9) and a chain screen (8) to prevent the escape of microwave radiation. The source of energy can be the electricity supplied by the ordinary means (230/400 V) or by a mobile power unit.

Description

    FIELD OF TECHNOLOGY
  • This Utility Model applies to a microwave heating equipment for asphalt road repairs, especially for the repairs of potholes or cracks in asphalt roads. Heating of the repaired spots in asphalt roads using this equipment ensures homogeneous joining of the added mixture with the original asphalt surface of the road.
    • EXISTING STATE-OF-ART
  • At present, asphalt roads are repaired without heating the area around the repaired spot, or with the heating applied immediately before adding the asphalt mixture into the damaged spot in the road, which is more expensive. When the area around the repaired spot in an asphalt road is not heated, a water-permeable line forms between the new and the original asphalt surface of the road. This causes yet further damage to the road, starting right in this permeable line. Therefore, the repairs of asphalt roads are more frequently performed with heating applied on the repaired spots, which ensures a significantly higher quality of the repair. The heating is performed either using the devices with gas burners, mostly propane-butane, or more sophisticated equipment that uses infra-red radiation. In both cases, the heat is transferred to the subsurface layer of the repaired spot through penetration. However, this method of heat transfer causes overheating of the surface layer and results in non-ecological asphalt burning. This leads to excessive energy demand for heating, which significantly increases the cost of asphalt road repairs. Probably, there have already been some attempts to use electromagnetic heating and melting of asphalt materials and mixtures, which is proven e.g. by published patent application file PV 1999-4074 . This file contains a general description of this method of heating asphalt materials and mixtures as well as basic schematic drawings of model equipment for this type of heating. However, the subject-matter of the above patent application is the use of the well-known nature of microwave heating to heat and melt asphalt mixtures. The description and schematic drawings do not represent any specific design of equipment fit for such heating, especially as regards the operating ability, mobility, and safety, and they do not contain any specific design of a microwave heating equipment for asphalt road repairs. That is why microwave radiation is still not used for local heating of repaired asphalt roads. Therefore, it is desirable to develop a microwave equipment that will ensure the optimum heating of the repaired spot on the road, lower energy demand, maximum safety for the operator, and reduction of the negative impact on the environment.
    • NATURE OF THE TECHNICAL SOLUTION
  • The aim stated above is fulfilled by the microwave heating equipment for asphalt road repairs under this Utility Model, which contains at least one magnetron with a waveguide. The nature of the technical solution of the equipment consists in the fact that each magnetron with a waveguide is equipped with a fan to cool the magnetron and divert heat from its surroundings. The heat from the surroundings of the magnetron is removed through an adjacent channel to the area of the waveguide. Each set of a magnetron with a waveguide, fan and adjacent heat diversion channel forms an independent integrated heating unit. The required number of units is mounted in a mobile frame, which is equipped with casters. Around the circumference of the bottom of the mobile frame there is a chain screen to prevent the escape of microwave radiation. The heating unit is secured by a system of safety switches, which are connected with the control unit of this equipment. The microwave heating equipment for asphalt road repairs under this Utility Model represents a new and efficient device for heating of the repaired spots, whose integration in the process of repairs of asphalt roads will ensure significant improvement in the quality of repairs and consequently a better durability of the repaired spots.
    • REPRESENTATION IN THE DRAWING
  • The attached schematic drawing represents a model design of the microwave heating equipment for asphalt road repairs under this Utility Model.
    • SEQUENCE LISTING PART OF DESCRIPTION
    1. 1) Magnetron
    2. 2) Waveguide
    3. 3) Fan
    4. 4) Set of safety switches
    5. 5) Control unit
    6. 6) Channel for heat removal
    7. 7) Mobile frame
    8. 8) Chain screen
    9. 9) Casters
    10. 10) Road under repair
    11. 11) Heating unit

Claims (1)

  1. Microwave heating equipment for asphalt road repairs, containing at least one magnetron with a waveguide, wherein in each magnetron (1) with a waveguide (2) is equipped with a fan (3) to cool the magnetron (1) and to divert the heat from its surroundings through a channel (6) towards the waveguide (2), and this set constitutes an integrated heating unit (11), which is located in a mobile frame (7) equipped with casters (9) and a chain screen (8) around the bottom circumference, which prevents the escape of microwave radiation and fits close to the road under repair (10), wherein the heating unit (11) is secured by a set of safety switches (4) connected to the control unit (5) of this equipment.
EP11466015A 2010-06-28 2011-06-24 Equipment for microwave heating of reconditioned asphalts roads Withdrawn EP2434054A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ201022895U CZ21269U1 (en) 2010-06-28 2010-06-28 Device for microwave heating of repaired tarmac roads

Publications (1)

Publication Number Publication Date
EP2434054A1 true EP2434054A1 (en) 2012-03-28

Family

ID=42736140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11466015A Withdrawn EP2434054A1 (en) 2010-06-28 2011-06-24 Equipment for microwave heating of reconditioned asphalts roads

Country Status (2)

Country Link
EP (1) EP2434054A1 (en)
CZ (1) CZ21269U1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970789A (en) * 2016-06-01 2016-09-28 西安电子科技大学 Microwave heating device based on power division and radiation integration
CN106769635A (en) * 2017-03-20 2017-05-31 安徽工程大学 A kind of heat and mass experimental provision on adjustable microwave heated asphalt road surface
CN107268402A (en) * 2017-08-07 2017-10-20 江苏集萃道路工程技术与装备研究所有限公司 A kind of loose machine of microwave heating rake and its microwave heating wall
WO2019193493A1 (en) * 2018-04-04 2019-10-10 FUTTEC a.s. Device, in particular for heating of asphalt and similar mixtures and repairs of asphalt surfaces
CN111979890A (en) * 2020-08-13 2020-11-24 江苏集萃道路工程技术与装备研究所有限公司 Movable heating wall based on microwave magnetron
CN116537002A (en) * 2023-03-13 2023-08-04 石家庄铁道大学 Asphalt mixture heating device based on microwaves

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2013705A3 (en) * 2013-09-17 2014-11-05 Ústav Chemických Procesů Akademie Věd České Republiky Method of repairing damages roads
CZ2020680A3 (en) * 2020-12-15 2021-11-18 FUTTEC a.s. Method of repairing asphalt surfaces and the equipment for this

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2024291A (en) * 1978-06-30 1980-01-09 Jeppson M Microwave method and apparatus for heating pavements
US4319856A (en) * 1977-01-03 1982-03-16 Microdry Corportion Microwave method and apparatus for reprocessing pavements
DE10121929A1 (en) * 2001-05-05 2002-01-03 Ruediger Dunger Asphalt concrete heating and plasticizng has cassettes containing microwave generators, systems guiding microwaves to asphalt surface, shuttering preventing lateral escape of microwaves
CN2701906Y (en) * 2003-11-11 2005-05-25 广东美的集团股份有限公司 Microwave bituminous pavement heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319856A (en) * 1977-01-03 1982-03-16 Microdry Corportion Microwave method and apparatus for reprocessing pavements
GB2024291A (en) * 1978-06-30 1980-01-09 Jeppson M Microwave method and apparatus for heating pavements
DE10121929A1 (en) * 2001-05-05 2002-01-03 Ruediger Dunger Asphalt concrete heating and plasticizng has cassettes containing microwave generators, systems guiding microwaves to asphalt surface, shuttering preventing lateral escape of microwaves
CN2701906Y (en) * 2003-11-11 2005-05-25 广东美的集团股份有限公司 Microwave bituminous pavement heater

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970789A (en) * 2016-06-01 2016-09-28 西安电子科技大学 Microwave heating device based on power division and radiation integration
CN105970789B (en) * 2016-06-01 2018-10-23 西安电子科技大学 A kind of microwave heating equipment dividing radiation integrated based on work(
CN106769635A (en) * 2017-03-20 2017-05-31 安徽工程大学 A kind of heat and mass experimental provision on adjustable microwave heated asphalt road surface
CN106769635B (en) * 2017-03-20 2023-02-24 安徽工程大学 Adjustable heat and mass transfer experimental device for heating asphalt pavement by microwave
CN107268402A (en) * 2017-08-07 2017-10-20 江苏集萃道路工程技术与装备研究所有限公司 A kind of loose machine of microwave heating rake and its microwave heating wall
CN107268402B (en) * 2017-08-07 2022-06-28 江苏集萃道路工程技术与装备研究所有限公司 Microwave heating scarify machine and microwave heating wall thereof
WO2019193493A1 (en) * 2018-04-04 2019-10-10 FUTTEC a.s. Device, in particular for heating of asphalt and similar mixtures and repairs of asphalt surfaces
CN111979890A (en) * 2020-08-13 2020-11-24 江苏集萃道路工程技术与装备研究所有限公司 Movable heating wall based on microwave magnetron
CN116537002A (en) * 2023-03-13 2023-08-04 石家庄铁道大学 Asphalt mixture heating device based on microwaves
CN116537002B (en) * 2023-03-13 2023-11-10 石家庄铁道大学 Asphalt mixture heating device based on microwaves

Also Published As

Publication number Publication date
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