US20060133782A1 - Air stream heater - Google Patents

Air stream heater Download PDF

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Publication number
US20060133782A1
US20060133782A1 US11/236,258 US23625805A US2006133782A1 US 20060133782 A1 US20060133782 A1 US 20060133782A1 US 23625805 A US23625805 A US 23625805A US 2006133782 A1 US2006133782 A1 US 2006133782A1
Authority
US
United States
Prior art keywords
air stream
spiral groove
stream heater
bush
fluid communication
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.)
Abandoned
Application number
US11/236,258
Inventor
Roland Otto
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.)
BEYER AND OTTO GmbH
Original Assignee
BEYER AND OTTO GmbH
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 BEYER AND OTTO GmbH filed Critical BEYER AND OTTO GmbH
Assigned to BEYER & OTTO GMBH reassignment BEYER & OTTO GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OTTO, ROLAND
Publication of US20060133782A1 publication Critical patent/US20060133782A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns

Definitions

  • This invention relates to the art of air stream heaters used for the targeted supply of a hot air stream.
  • a wire coil serves as a heating source for the hot air, the coil being able to be heated up to a maximum of 700° C., thereby heating up the air stream to the desired temperature.
  • the air stream has a maximum volume of 2 m 3 /h and the max. air pressure is 1 bar (15 psi).
  • this type of air stream heater has a limited service life (approx. 250 hrs.).
  • the invention provides an air stream heater, wherein a bush made of copper or brass ( 5 ) is located in a metal housing ( 4 ) and in the axial boring of the bush a heating cartridge ( 6 ) is arranged and on the outer casing of the latter a spiral groove is arranged.
  • a metallic square housing ( 4 ) there is a boring in which a cylindrical bush ( 5 ) is arranged, the latter being made of brass or copper.
  • a heating cartridge ( 6 ) In the inner longitudinal boring of this bush ( 5 ) there is a heating cartridge ( 6 ).
  • a spiral groove ( 3 ) In the outer wall of the bush ( 5 ) there is a spiral groove ( 3 ).
  • a heat detector Arranged in the wall at the front end of the housing ( 4 ) is a heat detector, which is for the purpose of temperature control of the air stream ( 2 ).
  • the rear opening of the housing ( 4 ) is sealed by a cap ( 14 ) which is provided with a centrical boring ( 9 ) and on the rear face of which a protective cable ( 10 ) with an electric plug ( 11 ) are fastened.
  • the electrical cables of the heat detector and the hearing cartridge ( 6 ) are conducted through the boring ( 9 ).
  • the annular metal seal ( 8 ) at the rear end of the bush ( 5 ) prevents the escape of the air stream ( 2 ) out of the housing ( 4 ).
  • the elbow union ( 12 ) is for the purpose of connecting a compressed air line.
  • the air stream heater of the invention operates in the following manner.
  • the first step is to connect a compressed air line with a pressure controller, a pressure gauge with the elbow union ( 12 ) and the electric plug ( 11 ) with an electronic temperature controller.
  • the function of the temperature controller is to set the desired temperature of the hot air stream.
  • the compressed air controller provides a pressure setting of the hot air stream.
  • the heat detector signals the temperature of the housing ( 4 ) to the electronic temperature controller and the latter transmits the on and off switching signals to the heating cartridge ( 6 ).
  • the latter transfers the heat to the bush ( 5 ).
  • the inflowing compressed air ( 2 ) flows through the spiral groove ( 3 ), is heated up in the process and leaves as a heated air stream through the nozzle ( 1 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Resistance Heating (AREA)

Abstract

Air stream heater, wherein a bush made of copper brass (5) is located in a metal housing (4) and in the axial boring of the bush a heating cartridge (6) is arranged and on the outer casing of the latter a spiral groove is arranged.

Description

    BACKGROUND OF THE INVENTION
  • This invention relates to the art of air stream heaters used for the targeted supply of a hot air stream.
  • In prior art air stream heaters, a wire coil serves as a heating source for the hot air, the coil being able to be heated up to a maximum of 700° C., thereby heating up the air stream to the desired temperature. The air stream has a maximum volume of 2 m3/h and the max. air pressure is 1 bar (15 psi). On account of the restricted load capacity of the glowing wire coil this type of air stream heater has a limited service life (approx. 250 hrs.).
    • SUMMARY OF THE INVENTION
  • The air stream heater of the invention has a completely new concept. The technical values are therefore fundamentally different:
  • 1. Service life of over 1000 hours.
  • 2. Maximum heated air volume 6 m3/h.
  • 3. Max. pressure 2.5 bar (38 psi).
  • The invention provides an air stream heater, wherein a bush made of copper or brass (5) is located in a metal housing (4) and in the axial boring of the bush a heating cartridge (6) is arranged and on the outer casing of the latter a spiral groove is arranged.
    • BRIEF DESCRIPTION OF THE DRAWING
  • FIG. 1 is a side elevational view, partly in section, of the air stream heater of the invention; and
  • FIG. 2 is an enlarged fragmentary sectional view further illustrating the air stream heater of FIG. 1.
    • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIG. 1, in the centrical longitudinal axis of a metallic square housing (4) there is a boring in which a cylindrical bush (5) is arranged, the latter being made of brass or copper. In the inner longitudinal boring of this bush (5) there is a heating cartridge (6). In the outer wall of the bush (5) there is a spiral groove (3). Arranged in the wall at the front end of the housing (4) is a heat detector, which is for the purpose of temperature control of the air stream (2). The rear opening of the housing (4) is sealed by a cap (14) which is provided with a centrical boring (9) and on the rear face of which a protective cable (10) with an electric plug (11) are fastened. The electrical cables of the heat detector and the hearing cartridge (6) are conducted through the boring (9). The annular metal seal (8) at the rear end of the bush (5) prevents the escape of the air stream (2) out of the housing (4). The elbow union (12) is for the purpose of connecting a compressed air line.
  • The air stream heater of the invention operates in the following manner. The first step is to connect a compressed air line with a pressure controller, a pressure gauge with the elbow union (12) and the electric plug (11) with an electronic temperature controller. The function of the temperature controller is to set the desired temperature of the hot air stream. The compressed air controller provides a pressure setting of the hot air stream. The heat detector signals the temperature of the housing (4) to the electronic temperature controller and the latter transmits the on and off switching signals to the heating cartridge (6). The latter transfers the heat to the bush (5). The inflowing compressed air (2) flows through the spiral groove (3), is heated up in the process and leaves as a heated air stream through the nozzle (1).

Claims (4)

1. An air stream heater, wherein a bush made of copper or brass (5) is located in a metal housing (4) and in the axial boring of the bush a heating cartridge (6) is arranged and on the outer casing of the latter a spiral groove is arranged.
2. The air stream heater according to claim 1, wherein an output nozzle is in fluid communication with the spiral groove.
3. The air stream heater according to claim 1, wherein an inlet for receiving compressed air is in fluid communication with the spiral groove.
4. The air stream heater according to claim 1, wherein an inlet for receiving compressed air is in fluid communication with the spiral groove upstream thereof and an outlet nozzle is in fluid communication with the spiral groove downstream thereof so that compressed air flows through the spiral groove and is heated therein and leaves as a heated air stream through the nozzle.
US11/236,258 2004-09-27 2005-09-27 Air stream heater Abandoned US20060133782A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004015009.3 2004-09-27
DE202004015009U DE202004015009U1 (en) 2004-09-27 2004-09-27 Air stream heater

Publications (1)

Publication Number Publication Date
US20060133782A1 true US20060133782A1 (en) 2006-06-22

Family

ID=33483689

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/236,258 Abandoned US20060133782A1 (en) 2004-09-27 2005-09-27 Air stream heater

Country Status (2)

Country Link
US (1) US20060133782A1 (en)
DE (1) DE202004015009U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090104A1 (en) * 2009-05-19 2010-11-20 Walmec Spa HIGH PERFORMANCE COMPRESSED AIR HEATER IN A SPRAY PAINTING EQUIPMENT.
CN104676100A (en) * 2015-03-12 2015-06-03 宁波东钱湖旅游度假区圣莱思机电有限公司 Heating device for pressure reducer
CN111473518A (en) * 2020-03-16 2020-07-31 上海普丽盛包装股份有限公司 Hot air heater shell and hot air heater
CN115950012A (en) * 2023-03-10 2023-04-11 德州宏飏空调设备有限公司 Air ultraviolet disinfection and sterilization equipment for epidemic prevention

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US978808A (en) * 1908-07-07 1910-12-13 Simplex Electric Heating Co Electric circulation water-heater.
US3247359A (en) * 1960-02-10 1966-04-19 Siemens Elektrogeraete Gmbh Electric instantaneous water heater
US3560710A (en) * 1967-01-20 1971-02-02 Walter Robert Ditzler Electrically heated hot-air dispenser
US3584194A (en) * 1969-05-23 1971-06-08 Aro Corp Fluid heating techniques
US3777117A (en) * 1969-03-10 1973-12-04 D Othmer Electric heat generating system
US3835294A (en) * 1973-04-06 1974-09-10 Binks Mfg Co High pressure electric fluid heater
US4975559A (en) * 1988-06-10 1990-12-04 Nestec S.A. Device for heating and aerating water in a coffee machine
US6393212B1 (en) * 1998-03-18 2002-05-21 Harwil Corporation Portable steam generating system
US6459854B1 (en) * 2000-01-24 2002-10-01 Nestec S.A. Process and module for heating liquid

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US978808A (en) * 1908-07-07 1910-12-13 Simplex Electric Heating Co Electric circulation water-heater.
US3247359A (en) * 1960-02-10 1966-04-19 Siemens Elektrogeraete Gmbh Electric instantaneous water heater
US3560710A (en) * 1967-01-20 1971-02-02 Walter Robert Ditzler Electrically heated hot-air dispenser
US3777117A (en) * 1969-03-10 1973-12-04 D Othmer Electric heat generating system
US3584194A (en) * 1969-05-23 1971-06-08 Aro Corp Fluid heating techniques
US3835294A (en) * 1973-04-06 1974-09-10 Binks Mfg Co High pressure electric fluid heater
US4975559A (en) * 1988-06-10 1990-12-04 Nestec S.A. Device for heating and aerating water in a coffee machine
US6393212B1 (en) * 1998-03-18 2002-05-21 Harwil Corporation Portable steam generating system
US6459854B1 (en) * 2000-01-24 2002-10-01 Nestec S.A. Process and module for heating liquid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090104A1 (en) * 2009-05-19 2010-11-20 Walmec Spa HIGH PERFORMANCE COMPRESSED AIR HEATER IN A SPRAY PAINTING EQUIPMENT.
CN104676100A (en) * 2015-03-12 2015-06-03 宁波东钱湖旅游度假区圣莱思机电有限公司 Heating device for pressure reducer
CN111473518A (en) * 2020-03-16 2020-07-31 上海普丽盛包装股份有限公司 Hot air heater shell and hot air heater
CN115950012A (en) * 2023-03-10 2023-04-11 德州宏飏空调设备有限公司 Air ultraviolet disinfection and sterilization equipment for epidemic prevention

Also Published As

Publication number Publication date
DE202004015009U1 (en) 2004-11-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BEYER & OTTO GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OTTO, ROLAND;REEL/FRAME:017621/0788

Effective date: 20060221

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION