US20100122541A1 - Hot air generating tool - Google Patents
Hot air generating tool Download PDFInfo
- Publication number
- US20100122541A1 US20100122541A1 US12/451,417 US45141708A US2010122541A1 US 20100122541 A1 US20100122541 A1 US 20100122541A1 US 45141708 A US45141708 A US 45141708A US 2010122541 A1 US2010122541 A1 US 2010122541A1
- Authority
- US
- United States
- Prior art keywords
- air
- handle
- hot air
- tubular body
- tool according
- 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
Links
Images
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
-
- 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
Definitions
- FIG. 1 is a sectional view of a tool according to the invention
- FIG. 2 is a perspective view of a use of the tool according to the invention.
- the Ranque-Hilsch vortex tube device 13 which is of a per se known type, is integrated in the handle 12 .
- the compressed air is injected radially into the chamber 14 , where a vortex is generated; such vortex produces the dynamic separation or extraction of molecules with high kinetic energy (i.e., at high temperature) from molecules with lower kinetic energy (and therefore at a lower temperature).
Abstract
A hot air generating tool, comprising a tubular body for aspirating and discharging drying air, with which elements for heating the air and a handle are associated. The air heating elements are constituted by a Ranque-Hilsch vortex tube device supplied with compressed air.
Description
- Drying machines, for example of the infrared type, are currently known for the industrial drying of one or more painted bodies, for example a component of a vehicle body or an entire vehicle body, for example of a car, and are inherently expensive in themselves and also in terms of management and maintenance.
- For hobby work, these industrial solutions are inherently unfeasible, and a person who has painted one or more bodies or surfaces, for example by means of an airbrush or a paint gun to be associated with an air compressor, must allow the painted bodies to dry in the air by natural convection, or use an ordinary hairdryer, improperly consuming electric power and risking desiccation of the painted surface.
- The aim of the present invention is to provide a tool which generates hot air by using compressed air and can be connected easily to a compressor of a known type.
- Within this aim, an object of the present invention is to provide a tool which is easy to provide and use and is also cheap.
- Another object of the present invention is to provide a hot air generating tool which can be manufactured with known systems and technologies.
- This aim and these and other objects, which will become better apparent hereinafter, are achieved by a hot air generating tool, comprising a tubular body for aspirating and discharging drying air, with which means for heating said air and a handle are associated, characterized in that said air heating means are constituted by a Ranque-Hilsch vortex tube device supplied with compressed air.
- Further characteristics and advantages of the invention will become better apparent from the following detailed description of a preferred but not exclusive embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, wherein:
-
FIG. 1 is a sectional view of a tool according to the invention; -
FIG. 2 is a perspective view of a use of the tool according to the invention; -
FIG. 3 is a schematic sectional view of the operation of the vortex tube device which is a part of the tool according to the invention. - With reference to the figures, a hot air generating tool according to the invention is generally designated by the
reference numeral 10. - The hot
air generating tool 10 comprises atubular body 11 for aspirating and discharging drying air, with which means for heating the air and ahandle 12 are associated. - The air heating means are constituted by a Ranque-Hilsch
vortex tube device 13, which is supplied with compressed air. - The Ranque-Hilsch
vortex tube device 13, which is of a per se known type, is integrated in thehandle 12. - The
vortex tube device 13 comprises acylindrical chamber 14 in which compressed air is injected in a radial direction from alateral port 15, such air arriving from a compressor of a known type, which is not illustrated for the sake of simplicity. - A first tubular
cylindrical element 16 for feeding hot air toward thetubular body 11 protrudes from thechamber 14, coaxially thereto, at one end, and a secondtubular element 17, which is shorter than thefirst element 16, for discharging cold air protrudes from the opposite side. - A
valve 18 for adjusting the flow-rate of compressed hot air is provided at the end of thefirst tube 16. - The
first tube 16 passes through thehandle 12 and leads into thetubular body 11 for aspirating and discharging air, while thesecond tube 17 expels the cold air into the environment, or as an alternative into a disposal tube designed to move the cold air flow away from the user. - The
handle 12 is also designed to protect the user against the cold that exits from thesecond tube 17 and from the heat emitted by thefirst tube 16. - The
tubular body 11 comprises: a firstcentral part 20, with which thehandle 12 is rigidly coupled; asecond intake part 21, with a frustum-shapedinternal surface 22 which tapers toward the inside of thetubular body 11 and adebris retention grille 23; athird emission part 24, with an outer divergingportion 25 to provide a Venturi effect. - The
third part 24 is screwed to thefirst part 20 by means of two corresponding threaded portions, aninternal thread 26 on thefirst part 20 and a complementaryexternal thread 27 on thethird part 24, in order to adjust the temperature by increasing or decreasing the Venturi effect. - By turning the
third part 24 in one direction or in the opposite direction, the pressurized hot air stream that exits from thefirst tube 16 is throttled, thereby modifying the temperature of the air that exits from thetubular body 11, as shown by way of example inFIG. 3 . - The
vortex tube device 13, as mentioned, is of a per se known type, and is used generally in a wide range of applications in the localized cooling of machines, assembly lines and industrial processes. - In the present invention, the generated hot air of the
tube device 13 is used instead of the cold air. - The operating principle of the
tube device 13 is as follows. - The compressed air is injected radially into the
chamber 14, where a vortex is generated; such vortex produces the dynamic separation or extraction of molecules with high kinetic energy (i.e., at high temperature) from molecules with lower kinetic energy (and therefore at a lower temperature). - In this manner, two separate air streams, a hot one and a very cold one, are generated starting from a flow of compressed air.
- Part of the hot air (which therefore moves at a higher speed than the cold air) is made to exit from the first tube by means of a conical end nozzle, shown schematically in
FIG. 3 and designated therein by thereference numeral 30, and anadjustment valve 18; theconical nozzle 30 allows the outflow of the hotouter stream 31 and diverts in the opposite direction the coldinner stream 32. - The cold
inner stream 32 is thus forced in countercurrent at the opposite end toward thechamber 14 and from there toward thesecond tube 17. - The pressurized hot air that exits from the
first tube 16 can reach 110° C. - The
control valve 18 located in the end of thefirst tube 16 allows to adjust the temperature and quantity of the air. - In practice it has been found that the invention thus described solves the intended aim and objects.
- In particular, the present invention provides a tool for generating hot air by using compressed air which can be connected easily to known types of compressor, so as to utilize the characteristics of the Ranque-Hilsch tube device.
- Further, the present invention provides a tool which is easy to provide and use, as well as cheap, also in that it does not use electric power directly, except for the power needed to run the compressor.
- Further, the tool is lightweight and has no moving parts, and is therefore scarcely demanding to handle for a user who has to hold it for a long period of time.
- Further, the invention provides a drying tool which can be purchased and managed easily even by a private individual for hobby-related purposes and can also be used at an industrial level by appropriately adapting its dimensions.
- Moreover, the present invention provides a tool for generating hot air which can be manufactured with known systems and technologies.
- The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
- In practice, the materials employed, so long as they are compatible with the specific use, as well as the dimensions, may be any according to requirements and to the state of the art.
- The disclosures in Italian Patent Application No. PD2007A000182 from which this application claims priority are incorporated herein by reference.
- Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
Claims (6)
1-5. (canceled)
6. A hot air generating tool, comprising a tubular body for aspirating and discharging drying air, with which means for heating said air and a handle are associated, said air heating means being constituted by a Ranque-Hilsch vortex tube device supplied with compressed air, wherein said Ranque-Hilsch vortex tube device is integrated in said handle.
7. The tool according to claim 6 , wherein said vortex tube device comprises a cylindrical chamber, in which compressed air is injected in a radial direction from a lateral port, a first cylindrical tubular element for feeding hot air protruding from said chamber coaxially thereto on one side, a second tubular element which is shorter than the first tubular element, for emitting cold air, protruding coaxially from said chamber coaxially thereto at the other side, a valve for adjusting the flow-rate of pressurized hot air being provided at the end of said first tube.
8. The tool according to claim 7 , wherein said first tubular element passes through said handle and leads into said tubular body for aspirating and discharging air.
9. The tool according to claim 6 , wherein said tubular body comprises a first central part, with which the handle is jointly connected, a second intake part, with a frustum-shaped internal surface which tapers toward the inside of the tubular body, and a third discharge part, with an outer portion which diverges to provide a Venturi effect.
10. The tool according to claim 9 , wherein said third part is screwed to said first part by means of two corresponding threaded portions, an internal thread being provided on said first central part and a complementary external thread being provided on said third discharge part, to adjust the temperature by increasing or decreasing the Venturi effect.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD2007A000182 | 2007-05-23 | ||
IT000182A ITPD20070182A1 (en) | 2007-05-23 | 2007-05-23 | HOT AIR GENERATOR TOOL |
PCT/EP2008/055824 WO2008141974A2 (en) | 2007-05-23 | 2008-05-13 | Hot air generating tool |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100122541A1 true US20100122541A1 (en) | 2010-05-20 |
Family
ID=39591204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/451,417 Abandoned US20100122541A1 (en) | 2007-05-23 | 2008-05-13 | Hot air generating tool |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100122541A1 (en) |
EP (1) | EP2147258A2 (en) |
IT (1) | ITPD20070182A1 (en) |
WO (1) | WO2008141974A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100050462A1 (en) * | 2008-08-29 | 2010-03-04 | Joseph Francis Attonito | Body exsiccation chamber |
CN103499157A (en) * | 2013-10-25 | 2014-01-08 | 淮南矿业(集团)有限责任公司 | Refrigerating and heating device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101097299B1 (en) | 2009-09-17 | 2011-12-21 | 조권호 | gun for air cooling |
WO2012129592A1 (en) * | 2011-03-25 | 2012-10-04 | Sekisui Rib Loc Australia Pty Ltd | A method and apparatus for pre-heating a plastic strip to facilitate plastic welding at a location underground |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1952281A (en) * | 1931-12-12 | 1934-03-27 | Giration Des Fluides Sarl | Method and apparatus for obtaining from alpha fluid under pressure two currents of fluids at different temperatures |
US5452855A (en) * | 1989-11-06 | 1995-09-26 | Hughes Aircraft Company | High volume/low pressure spray gun |
US7883026B2 (en) * | 2004-06-30 | 2011-02-08 | Illinois Tool Works Inc. | Fluid atomizing system and method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3600147A1 (en) * | 1986-01-07 | 1987-07-09 | Sibbertsen Walter | Compressed-air blowing device |
DE8805752U1 (en) * | 1987-08-03 | 1988-09-15 | Marresearch |
-
2007
- 2007-05-23 IT IT000182A patent/ITPD20070182A1/en unknown
-
2008
- 2008-05-13 WO PCT/EP2008/055824 patent/WO2008141974A2/en active Application Filing
- 2008-05-13 EP EP08750258A patent/EP2147258A2/en not_active Withdrawn
- 2008-05-13 US US12/451,417 patent/US20100122541A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1952281A (en) * | 1931-12-12 | 1934-03-27 | Giration Des Fluides Sarl | Method and apparatus for obtaining from alpha fluid under pressure two currents of fluids at different temperatures |
US5452855A (en) * | 1989-11-06 | 1995-09-26 | Hughes Aircraft Company | High volume/low pressure spray gun |
US7883026B2 (en) * | 2004-06-30 | 2011-02-08 | Illinois Tool Works Inc. | Fluid atomizing system and method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100050462A1 (en) * | 2008-08-29 | 2010-03-04 | Joseph Francis Attonito | Body exsiccation chamber |
CN103499157A (en) * | 2013-10-25 | 2014-01-08 | 淮南矿业(集团)有限责任公司 | Refrigerating and heating device |
Also Published As
Publication number | Publication date |
---|---|
EP2147258A2 (en) | 2010-01-27 |
WO2008141974A2 (en) | 2008-11-27 |
WO2008141974A3 (en) | 2009-05-28 |
ITPD20070182A1 (en) | 2008-11-24 |
WO2008141974A4 (en) | 2009-08-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: OFFICINE MECCANICHE A.N.I. S.P.A.,ITALY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COZZA, OSCAR;REEL/FRAME:023527/0364 Effective date: 20091029 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |