EP0692684B1 - Vorrichtung zur Erzeugung eines Warmluftstroms - Google Patents

Vorrichtung zur Erzeugung eines Warmluftstroms Download PDF

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Publication number
EP0692684B1
EP0692684B1 EP95401480A EP95401480A EP0692684B1 EP 0692684 B1 EP0692684 B1 EP 0692684B1 EP 95401480 A EP95401480 A EP 95401480A EP 95401480 A EP95401480 A EP 95401480A EP 0692684 B1 EP0692684 B1 EP 0692684B1
Authority
EP
European Patent Office
Prior art keywords
air
heating system
enclosure
outlet
container
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 - Lifetime
Application number
EP95401480A
Other languages
English (en)
French (fr)
Other versions
EP0692684A1 (de
Inventor
Alain Chevalier
Marc Bouchez
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.)
Airbus Group SAS
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Airbus Group SAS
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Filing date
Publication date
Application filed by Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0692684A1 publication Critical patent/EP0692684A1/de
Application granted granted Critical
Publication of EP0692684B1 publication Critical patent/EP0692684B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/065—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using fluid fuel

Definitions

  • the present invention relates to a generation device a stream of hot air.
  • the present invention can be used in many installations requiring a current of hot air, such as facilities for monitoring the holding materials or for aerodynamics or validation of wall cooling systems, it will be described more particularly below in the context a test bench for the development of ramjet engines.
  • heaters static with a heater, for example a gas burner or an electrical device, and intended for heating a material having a high thermal capacity, such as alumina beads or tubes metallic.
  • a heater for example a gas burner or an electrical device
  • a material having a high thermal capacity such as alumina beads or tubes metallic.
  • document EP-A-0343938 discloses a air conditioning or air conditioning system of a building, which seeks to obtain a draft not polluted and heated.
  • this document known provides a first air path from the outside towards the interior of the building and a second air path of inside to outside of the building, independent one of the other. Therefore, this known device is complex.
  • the treatments undergone by the circulating air according to these routes are varied and said first route which uses air from the outside environment including subject to heating and humidification.
  • the object of the present invention is to remedy these disadvantages. It concerns a generation device hot air likely to supply unclean air at high temperature, and this without limitation of duration.
  • the device for generation of a stream of hot air especially for development of ramjet engines, including a source air generating an air current at its outlet, a system heating at least one burner supplied with fluid fuel and a thermal system with heat transfer elements likely to store the thermal energy generated by said heating system and restore this thermal energy to said current air, said thermal system being arranged on a mobile support capable of passing said system thermal of a first position for which it found next to said heating system to a second position for which it is located next to the exit of said air source is remarkable in that the elements heat transfer fluids are made of a material with high specific heat and distributed on said mobile support of so as to continuously renew the heat transfer elements arranged in said air stream and beforehand heated by the burner of said heating system, and in this that said heating system uses, for combustion combustible fluid, air from said air source and not used for the generation of said current hot air.
  • the current of hot air generated is not vitiated by said heating system, which makes it possible to obtain hot air having the same purity as the air generated at the outlet of the air source.
  • said mobile support is rotatable, which simplifies the device according to the invention.
  • said mobile support has the at least partially cylindrical container shape filled with said heat transfer elements.
  • said cylindrical container is provided in the upper wall of a first annular opening concentric with the axis of the cylindrical container and in the lower wall of a second annular opening also concentric to the axis of the cylindrical container, said second opening being provided with a wire mesh, and the output of the heating system and the output of the source of air being arranged below said second opening diametrically opposite relative to the axis of the cylindrical container.
  • the device according to the invention comprises advantageously a stationary enclosure, said container being movable in said enclosure and outlets of said air source and said heating system being arranged in said enclosure.
  • said device comprises insulation means arranged between the container and the enclosure and intended to prevent air circulation between said container and said enclosure, which prevents that of unheated air coming directly from the air source, or possibly stale air from the heating, mixes with the generated hot air current.
  • the generated stream of hot air can be exhausted by the nozzle to be transmitted to a user device, like for example a combustion chamber of a ramjet mounted on a test bench, and the air flow from the heating system, possibly flawed, can be evacuated through the exhaust pipe, both drafts that cannot mix together the other.
  • said exhaust pipe is provided a controllable internal valve capable of modifying the opening for the exhaust.
  • a passage is provided between said container and said enclosure to allow circulation air from the air source outlet to the heater.
  • Figure 1 is a schematic sectional view of a device according to the invention.
  • Figure 2 is a bottom view of the device of the Figure 1 shown partially cut away.
  • Figure 3 is a top view of the device of Figure 1.
  • the device 1 according to the invention and shown in the Figures 1 to 3 is intended to generate a draft hot.
  • Said device 1 comprises an external enclosure 2 mounted at landline and a mobile system in the form of a cylindrical container 3 movably mounted inside of said enclosure 2.
  • said cylindrical container 3 is integral a shaft 4 of axis X-X, rotatably mounted in the upper wall 5 and the lower wall 6 of the enclosure 2 and likely to be rotated, as shown by an arrow E, by a type of drive device known and not shown.
  • Said container 3 has a symmetry of revolution around said axis X-X and is provided in its upper wall 7 with a concentric annular opening 8 at the X-X axis and in its bottom wall 9 with an opening annular 10 opposite opening 8.
  • Said opening annular 10 is covered with a wire mesh 12.
  • the air stream B is likely to flow at through said container 3, in which it can be heated as we will see below, towards the opening annular 8 formed in the upper wall 7 of said container 3, while air A from said air stream B generated by the air source is capable of flowing through a passage 19 formed between the lower walls 6 and 9 of said enclosure 2 and of said container 3 , to supply air to said burners 14 during the combustion of the combustible fluid.
  • said container 3 is filled with elements heat transfer fluids 27, for example balls or tubes, only shown in the bottom of the container 3 on the figure 1.
  • said heat transfer elements 27 are shown so not very compact in this figure 1.
  • said container 3 can be completely filled with such elements heat transfer fluids 27, and this very compactly, the filling being defined according to the results to be obtained, as we will see it below.
  • Said heat transfer elements 27 preferably have a high ratio between their surface external and their volume and are preferably made in one material with high specific heat, such as example of zirconium dioxide.
  • the device 1 To generate a current of hot air, the device 1 according to the invention operates as follows.
  • Said burners 14 heat the heat transfer elements 27 located above them. Combustion gases from said burners 14 flow out of the container 3 and enclosure 2 through openings 8 and 23, as indicated by arrows C, and are evacuated through the exhaust pipe 25.
  • the heat transfer elements 27 thus store energy above the outlet 16 of the heating system 13. They restore this stored energy after the rotation of a U-turn of container 3 bringing said heat transfer elements 27 in said air stream B, said air stream B. Thus, said air stream B is heated.
  • the heat distribution in the heated air stream F is made homogeneous by the passage of said air stream F in said mixing system 22 so that, the outlet of said nozzle 21, a stream of heated air G of homogeneously.
  • the air generated by the air source can no longer flow directly through opening 23, as shown by arrows D, the importance of this dependent flow in particular the aerodynamic resistance of the elements heat transfer fluids 27 placed in the container 3.
  • the distribution of the flow out of the container 3, respectively at through the exhaust pipe 25 and the nozzle 21, depends especially the importance of their sections respective. This distribution can therefore be adjusted by modifying the section of the exhaust pipe 25 by via the controllable valve 26.
  • insulation is established between the container 3 and enclosure 2, for example using labyrinth seals 28 arranged between their vertical walls and a wall mobile not shown arranged between their upper walls, which prevents air circulation between enclosure 2 and container 3 so as to avoid mix with said stream of hot air, on the one hand air not heated directly from the air source, and other part of the possibly stale air coming from the heating 13.
  • the nozzle 21 present in its middle part 29 a decrease in diameter so as to allow forced air evacuation.
  • Said current of hot air G available at the outlet of said nozzle 21 can be used, for example, for checking holding materials or for aerodynamic tests or validation of wall cooling systems.
  • said stream of hot air is used for the development of ramjet engines, for which it has the appropriate characteristics like recalled previously, the device 1 according to the invention being associated for this purpose with the test bench used for this focus.

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)
  • Air Supply (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Claims (9)

  1. Vorrichtung zur Erzeugung eines Heißluftstroms(G) insbesondere zur Entwicklung von Straustrahltriebwerken mit einer Luftquelle, die an ihrem Ausgang (17) einen Luftstrom (B) erzeugt, einem Erhitzungssystem (13) mit mindestens einem Brenner (14), der mit einem brennbaren Fluid gespeist wird, und einem Wärmesystem mit Wärmeübertragungselementen (27), die die vom Erhitzungssystem (13) erzeugte Wärmeenergie speichern und diese Wärmeenergie an den Luftstrom (B) abgeben können, wobei das Wärmesystem auf einer beweglichen Unterlage (3) angeordnet ist,
    durch die das Wärmesystem aus einer ersten Stellung, in der es sich gegenüber dem Erhitzungssystem (13) befindet, in eine zweite Stellung gelangt, in der es sich gegenüber dem Ausgang (17) der Luftquelle befindet,
    dadurch gekennzeichnet, daß die Wärmeübertragungselemente (27) aus einem Material mit hoher spezifischer Wärme bestehen und auf der beweglichen Unterlage (3) so verteilt sind, daß die Wärmeübertragungselemente (27) im Luftstrom (B), die zuvor vom Brenner des Erhitzungssystems (13) erhitzt wurden, ständig gewechselt werden, und dadurch, daß das Erhitzungssystem (13) zur Verbrennung des brennbaren Fluids Luft (A) aus der Luftquelle, die nicht zur Erzeugung des Heißluftstroms(G) genutzt wird, verwendet.
  2. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, daß die bewegliche Unterlage (3) drehbar ist.
  3. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet, daß die bewegliche Unterlage die Form eines zylindrischen Behälters (3) hat, der zumindest teilweise mit den Wärmeübertragungselementen (27) gefüllt ist.
  4. Vorrichtung nach Anspruch 3,
    dadurch gekennzeichnet, daß der zylindrische Behälter (3) in der oberen Wand (7) eine erste zur Achse (X-X) des zylindrischen Behälters (3) konzentrische ringförmige Öffnung (8) und in der unteren Wand (9) eine zweite ebenfalls zur Achse (X-X) des zylindrischen Behälters (3) konzentrische ringförmige Öffnung (10) hat, wobei die zweite Öffnung (10) mit einem Metallgitter (12) versehen ist und der Ausgang (16) des Erhitzungssystems (13) und der Ausgang (17) der Luftquelle unter der zweiten Öffnung (10) diametral entgegengesetzt zur Achse (X-X) des zylindrischen Behälters (3) angeordnet sind.
  5. Vorrichtung nach einem der Ansprüche 3 oder 4,
    dadurch gekennzeichnet, daß sie ein Gehäuse (2) hat, in dem der Behälter (3) beweglich angeordnet ist, wobei die Ausgänge (16, 17) der Luftquelle und des Erhitzungssystems (13) im Gehäuse (2) angeordnet sind.
  6. Vorrichtung nach Anspruch 5,
    dadurch gekennzeichnet, daß sie zwischen dem Behälter (3) und dem Gehäuse (2) Isoliermittel (28) hat, durch die zwischen dem Behälter (3) und dem Gehäuse (2) eine Luftzirkulation verhindert werden soll.
  7. Vorrichtung nach einem der Ansprüche 5 oder 6,
    dadurch gekennzeichnet, daß das Gehäuse (2) in seiner oberen Wand (5) wie folgt ausgerüstet ist:
    mit einer ersten Öffnung (20) gegenüber dem Ausgang (17) der Luftquelle, an die eine Düse (21) angeschlossen ist, und
    mit einer zweiten Öffnung (23) gegenüber dem Ausgang (16) des Erhitzungssystems (13), an die eine Auspuffleitung (25) angeschlossen ist.
  8. Vorrichtung nach Anspruch 7,
    dadurch gekennzeichnet, daß die Auspuffleitung (25) ein steuerbares Innenventil (26) hat, mit dem der Querschnitt der Auspuffleitung verändert werden kann.
  9. Vorrichtung nach einem der Ansprüche 5 bis 8,
    dadurch gekennzeichnet, daß zwischen dem Behälter (3) und dem Gehäuse (2) ein Durchlaß (19) vorgesehen ist, der eine Luftzirkulation vom Ausgang (17) der Luftquelle zum Erhitzungssystem (13) ermöglicht.
EP95401480A 1994-07-12 1995-06-22 Vorrichtung zur Erzeugung eines Warmluftstroms Expired - Lifetime EP0692684B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9408618A FR2722561B1 (fr) 1994-07-12 1994-07-12 Dispositif de generation d'un courant d'air chaud
FR9408618 1994-07-12

Publications (2)

Publication Number Publication Date
EP0692684A1 EP0692684A1 (de) 1996-01-17
EP0692684B1 true EP0692684B1 (de) 1999-03-24

Family

ID=9465288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401480A Expired - Lifetime EP0692684B1 (de) 1994-07-12 1995-06-22 Vorrichtung zur Erzeugung eines Warmluftstroms

Country Status (6)

Country Link
US (1) US5590705A (de)
EP (1) EP0692684B1 (de)
JP (1) JP3579510B2 (de)
DE (1) DE69508476T2 (de)
ES (1) ES2130550T3 (de)
FR (1) FR2722561B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5941233A (en) * 1998-08-03 1999-08-24 Rupp Industries, Inc. Indirect-fired heater with regeneration reclaim rotary heat exchanges
DE10321646A1 (de) * 2002-06-03 2004-07-15 Rubitherm Gmbh Verfahren zur Wärme- und Kälteversorgung eines Raumes und Gebäude mit einer Mehrzahl mit einer Mehrzahl von Räumen
WO2008091381A2 (en) * 2006-08-01 2008-07-31 Research Foundation Of The City University Of New York System and method for storing energy in a nuclear power plant
US9873305B2 (en) * 2008-02-22 2018-01-23 Dow Global Technologies Inc. Heater module including thermal energy storage material
FR2954468B1 (fr) * 2009-12-23 2012-06-08 Valeo Systemes Thermiques Dispositif de chauffage electrique et procede d'assemblage correspondant
CN103742968B (zh) * 2014-01-28 2016-01-20 杭州扬果科技有限公司 高效节能对流传热取暖装置
CN104374081B (zh) * 2014-08-21 2017-11-21 福建永恒能源管理有限公司 一种新型高效节能的立式钢板热风炉

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US4280416A (en) * 1980-01-17 1981-07-28 Philip Edgerton Rotary valve for a regenerative thermal reactor
DE3035386C2 (de) * 1980-09-19 1985-08-29 Apparatebau Rothemühle Brandt + Kritzler GmbH, 5963 Wenden Anwendung von als Hohlkugeln oder als hohle Vielflächner ausgebildeten, wärmeübertragenden Elementen in einem regenerativen Wärmetauscher
JPS59157486A (ja) * 1983-02-28 1984-09-06 Baanaa Internatl:Kk 回転式熱交換器
US4708639A (en) * 1985-11-14 1987-11-24 Aisin Seiki Kabushiki Kaisha Combustor for external combustion engine having rotary-type regenerator heat exchanger
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EP0343938B1 (de) * 1988-05-24 1992-04-01 Caradon Heating Limited Raumheizungs- und -lüftungssystem für Gebäude
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US5137078A (en) * 1990-05-11 1992-08-11 Borowy William J Air heater seals

Also Published As

Publication number Publication date
EP0692684A1 (de) 1996-01-17
FR2722561B1 (fr) 1996-09-20
FR2722561A1 (fr) 1996-01-19
US5590705A (en) 1997-01-07
JP3579510B2 (ja) 2004-10-20
DE69508476T2 (de) 1999-07-08
DE69508476D1 (de) 1999-04-29
JPH0854315A (ja) 1996-02-27
ES2130550T3 (es) 1999-07-01

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