EP0249087B1 - Infrared radiant heater for large spaces - Google Patents

Infrared radiant heater for large spaces Download PDF

Info

Publication number
EP0249087B1
EP0249087B1 EP87107646A EP87107646A EP0249087B1 EP 0249087 B1 EP0249087 B1 EP 0249087B1 EP 87107646 A EP87107646 A EP 87107646A EP 87107646 A EP87107646 A EP 87107646A EP 0249087 B1 EP0249087 B1 EP 0249087B1
Authority
EP
European Patent Office
Prior art keywords
radiation tube
radiation
burner
constructed
tube
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
EP87107646A
Other languages
German (de)
French (fr)
Other versions
EP0249087A1 (en
Inventor
Haiko Paul Künzel
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.)
KUENZEL, HAIKO PAUL
Original Assignee
Kuenzel Haiko Paul
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 Kuenzel Haiko Paul filed Critical Kuenzel Haiko Paul
Priority to AT87107646T priority Critical patent/ATE54742T1/en
Publication of EP0249087A1 publication Critical patent/EP0249087A1/en
Application granted granted Critical
Publication of EP0249087B1 publication Critical patent/EP0249087B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/06—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated
    • F24D5/08—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated with hot air led through radiators

Definitions

  • the invention relates to a radiant heater for large-scale heating with at least one radiant tube at one end of which a burner device is arranged and at the other end of which a flue gas outlet can be connected to a chimney extractor, the radiant tube in the area of the burner device for shielding against direct flame exposure and overheating, fire-proof insulation and has a large diameter suitable for radiation of long-wave heat radiation.
  • Such radiant heaters are suspended from the ceiling of a room to be heated under a reflector and operated with an atmospheric gas burner device which burns LPG or natural gas.
  • Heaters of this type emit heat in the form of infrared heat radiation and are therefore suitable for use in heating large rooms such as work or sports halls or the like.
  • infrared radiators with exhaust gas temperatures of around 500 ° ; is, however, associated with significant disadvantages in terms of efficiency compared to radiators that work in a medium temperature range while emitting long-wave heat radiation, since the lower exhaust gas temperatures of approximately 200 ° in medium-temperature radiators allow a much better utilization of the heat of combustion.
  • gas-powered radiant heaters also precludes the fact that a gas connection or a gas storage device is not available everywhere.
  • infrared radiators are also associated with disadvantages, since not only the exhaust gas losses are very high, but also that the efficiency of heating the rooms is considerably lower than with long-wave medium-temperature radiation.
  • radiant heaters for large-scale heating with a radiant tube have already been proposed, they have only been used for operation with an atmospheric gas burner.
  • the burner device is provided at one end of the jet pipe, while the suction device which generates a vacuum is arranged at the other end and serves to draw the relatively soft flame of the atmospheric gas burner over the entire length of the jet pipe.
  • the radiant tube is designed with a large diameter suitable for radiating long-wave heat radiation and has a fire-proof insulation in the area of the burner device for shielding against direct flame exposure and overheating (US Pat. No. 4,529,123).
  • FIG. 1 shows a heat radiator with a U-shaped radiation tube 10, at one end of which a burner device 20 and at the other end of which an exhaust pipe 30 which can be connected to a chimney exhaust is arranged and which generates a negative pressure in the radiation tube 10. Due to this negative pressure, the burner flame generated by the burner device 20 and the combustion gas / air mixture which is produced in the process are drawn from the burner side of the jet pipe 10 to the exhaust gas nozzle 30 and sucked out through the latter.
  • the jet pipe 10 is constructed from longitudinal elements 11 and 12 and a connecting piece 13. In the area of the exhaust pipe 30, the end of the radiation tube 10 is closed by a cleaning cover 12c.
  • the burner device 20 which consists of a pressure oil burner 21 and a blower 22, is fastened to a swivel device or a door at the end of the radiation tube 10 on the burner side in order to facilitate an inspection.
  • the radiation tube 10 is provided with an insulation layer 60 over its entire length L, which has an effectiveness that decreases from the burner side of the radiation tube 10.
  • the gradation of the effectiveness can either be selected linearly or is adapted to the decrease in the temperature of the combustion gas-air mixture, whereby the arrangement of the insulation layer 60 makes it possible to achieve a relatively high combustion gas-air mixture in the entire passage area through the radiation tube 10 Has temperature, so that a uniform heating of the radiation tube 10 and thus a uniform radiation is possible.
  • the insulation 50 in the area of the radiation tube on the burner side can be implemented by a pipe socket 150 arranged concentrically in the radiation pipe near the burner device 20, which is connected to the burner device 20, the annular space 151 formed between the radiation pipe 10 and the pipe socket 150 on that of the burner device 20 facing side is closed.
  • An additional insulation layer 152 can be arranged in the annular space 151.
  • a trapezoidal reflector 40 is arranged above the radiator, the inside of which can be mirrored in order to enable better radiation reflection.
  • the refector 40 is preferably provided on its side facing away from the radiator with an additional insulation layer 41, so that insulation takes place towards the ceiling so that almost all of the thermal energy is available for heating the room.
  • the radiation tube 10 which has a diameter D such that there is a boring heat radiation due to the amount of heat available, can additionally in the region of its opposite sides 11 a, 12 a and / or in the region of the downward sides 11 b, 12 b be provided with additional insulations which bring about uniform heat radiation downwards and towards the reflector 40, so that overall a uniform heat radiation is made possible.
  • the heat radiator 100 is suspended on a ceiling 31 at a suitable distance via support strips 42. At one end it is connected with the suction device 30 to a chimney 130, while the burner 20 arranged at the opposite end of the radiation pipe 10 is connected to an oil tank 70 via an oil line 72 which has an oil filter 73 and an oil pump 71.
  • the burner device 20 is controlled in a manner known per se via a room sensor 81 and / or a time control device 80 (FIG. 4).
  • the energy saved 3 is purely qualitative if the temperature curve 1 of a heat radiator, which has a temperature of 15 ° C. at the desired measuring point, for example , is compared with the temperature door curve 2 of an air heater which has a temperature of approximately 18 ° C. at the desired measuring point.
  • the entire design of the heat radiator is designed such that the burner device can be operated in the overpressure range.
  • the radiation tube 10 is made gas-tight over its entire length L, and flow resistances are provided in the radiation tube.
  • a flow resistance designed as an orifice 170 can be arranged in the area of the exhaust port 30. This results in a significant improvement in the overall efficiency.
  • turbolators are arranged in the radiation tube 10.
  • These turbulators designed as baffles or swirling devices, destroy the laminar flow, so that swirling is achieved in the amount of gas flowing through the radiation tube 10 from the burner device 20 such that the hot core gases of the gas jet also act on the inner wall of the radiation tube 10 and the heat emission in relation accelerate to the gas. This results in a significant reduction in the exhaust gas temperatures while maintaining the desired radiation, which significantly improves the efficiency.

Abstract

1. Thermal radiator for the heating of large areas or rooms with at least one radiation tube (10), on the one end of which a burner facility (20) is disposed and at the other end of which there is disposed an exhaust gas pipe (30) that can be connected to a chimney breeching, in which the radiation tube (10), within the area of the burner facility (20), is provided with a refractory insulation (50:150) for shielding against a direct flame action and against overheating and possesses a large diameter (D) suitable for the emission of long-wave thermal radiation, characterized in that a) the burner facility (20) is constructed in the form of a pressure oil nozzle burner (21) with a blower (22), b) the radiation tube (10) over its entire length (L) is provided with an insulating layer (60) which, with increasing distance from the burner facility, possesses a decreasing thickness and/or effectiveness and c) the radiation tube (10), over its entire length (L), is constructed so as to be gas-proof and in that the burner facility (20) is constructed so as to be operable within the excessive pressure ranges, while inside the radiation tube (10) and/or within the area of the exhaust gas pipe (30), a drag (170) is mounted.

Description

Die Erfindung betrifft einen Wärmestrahler zur Großraumbeheizung mit mindestens einem Strahlungsrohr an dessen einem Ende eine Brennereinrichtung und an dessen anderem Ende ein an einem Kaminabzug anschließbarer Abgasstutzen angeordnet ist, wobei das Strahlungsrohr im Bereich der Brennereinrichtung zur Abschirmung gegen eine direkte Flammbeaufschlagung und Uberhitzung eine feuerfeste Isolierung und einen zur Abstrahlung langwelliger Wärmestrahlung geignet großen Durchmesser aufweist.The invention relates to a radiant heater for large-scale heating with at least one radiant tube at one end of which a burner device is arranged and at the other end of which a flue gas outlet can be connected to a chimney extractor, the radiant tube in the area of the burner device for shielding against direct flame exposure and overheating, fire-proof insulation and has a large diameter suitable for radiation of long-wave heat radiation.

Derartige Wärmestrahler werden an der Decke eines zu beheizendes Raumes unter einem Reflektor aufgehängt und mit einer atmosphärischen Gasbrennereinrichtung betrieben, welche Flüssiggas oder Erdgas verbrennt.Such radiant heaters are suspended from the ceiling of a room to be heated under a reflector and operated with an atmospheric gas burner device which burns LPG or natural gas.

Strahler dieser Art geben Wärme in Form von Infrarotwärmestrahlung ab und sind daher geeignet zur Verwendung beim Heizen von Großräumen wie Arbeits- oder Sporthallen od.dgl.Heaters of this type emit heat in the form of infrared heat radiation and are therefore suitable for use in heating large rooms such as work or sports halls or the like.

Die Anwendung von Infrarotstrahlern, bei denen Abgastemperaturen von etwa 500° auftreten; ist jedoch im Hinblick auf den Wirkungsgrad gegenüber Strahlern, die in einem mittleren Temperaturbereich unter Abstrahlung einer langwelligen Wärmestrahlung arbeiten, mit deutlichen Nachteilen verbunden, da die bei Mitteltemperaturstrahlern niedrigeren Abgastemperaturen von etwa 200° eine wesentlich bessere Ausnutzung der Verbrennungswärme ermöglichen. Der Anwendung von gasbetriebenen Wärmestrahlern steht in Einzelfällen auch entgegen, daß nicht überall ein Gasanschluß oder ein Gasspeicher zur Verfügung steht.The use of infrared radiators with exhaust gas temperatures of around 500 ° ; is, however, associated with significant disadvantages in terms of efficiency compared to radiators that work in a medium temperature range while emitting long-wave heat radiation, since the lower exhaust gas temperatures of approximately 200 ° in medium-temperature radiators allow a much better utilization of the heat of combustion. In individual cases, the use of gas-powered radiant heaters also precludes the fact that a gas connection or a gas storage device is not available everywhere.

Auch ist die Anwendung von, Infrarotstrahlern mit Nachteilen verbunden, da nicht nur die Abgasverluste sehr hoch sind, sondern daß auch der Wirkungsgrad der Aufheizung der Räume erheblich geringer ist als bei einer langwelligen Mitteltemperaturstrahlung.The use of infrared radiators is also associated with disadvantages, since not only the exhaust gas losses are very high, but also that the efficiency of heating the rooms is considerably lower than with long-wave medium-temperature radiation.

Es sind zwar bereits Wärmestrahler zur Großraumbeheizung mit einem Strahlrohr vorgeschlagen worden, jedoch nur für den Betrieb mit einem atmosphärischen Gasbrenner. Dabei ist an einem Ende des Strahlrohres die Brennereinrichtung vorgesehen, während am anderen Ende die einen Unterdruck erzeugende Saugeinrichtung angeordnet ist die dazu dient, die relativ weiche Flamme des atmosphärischen Gasbrenners über die ganze Länge des Strahlrohres zu ziehen. Hierbei ist das Strahlrohr mit einem zur Abstrahlung langwelliger Wärmestrahlung geeigneten großen Durchmesser ausgebildet und weist im Bereich der Brennereinrichtung zur Abschirmung gegen eine direkte Flammbeaufschlagung und Überhitzung eine feuerfeste Isolierung auf (US-PS 4 529 123).Although radiant heaters for large-scale heating with a radiant tube have already been proposed, they have only been used for operation with an atmospheric gas burner. In this case, the burner device is provided at one end of the jet pipe, while the suction device which generates a vacuum is arranged at the other end and serves to draw the relatively soft flame of the atmospheric gas burner over the entire length of the jet pipe. Here, the radiant tube is designed with a large diameter suitable for radiating long-wave heat radiation and has a fire-proof insulation in the area of the burner device for shielding against direct flame exposure and overheating (US Pat. No. 4,529,123).

Eine derartige Vorrichtung kann jedoch nicht ohne weiteres mit einem Gebläsebrenner betrieben werden, wie er beispielsweise aus der EP-A 132 153 bekannt ist, da bei den Gebläsebrennern ein kurzer, sehr heißer Flammstrahl erzeugt wird, der zu einer Zerstörung des Strahlrohres und - aufgrund der Rückstrahlung auf den Brenner - des Brenners führen würde.However, such a device cannot easily be operated with a forced draft burner, as is known, for example, from EP-A 132 153, since a short, very hot flame jet is generated in the forced draft burners, which leads to destruction of the jet pipe and - due to the Reflection on the burner - the burner would lead.

Es ist jedoch schwierig, die bekannten Druck-ÖI-Düsenbrenner mit einem Gebläse bei den bekannten Wärmestrahlern einzusetzen, da hier ja erhebliche technische Schwierigkeiten zu überwinden sind. Ein atmosphärischer Brenner erzeugt eine weiche, relativ kalte Flamme, die sich langziehen läßt und daher eine gleichmäßige Wärmeabstrahlung erzeugt. Ein Gebläsebrenner dagegen schafft eine kurze buschige Flamme mit hohen Flammtemperaturen von beispielsweise etwa 1300°C. Hierdurch entsteht eine sehr hohe Temperatur im Bereich der Brennereinrichtung, die mit wachsendem Abstand zur Brennereinrichtung stark abnimmt. Andererseits sind mit den atmosphärischen Brennern keine hohen Leistungen übertragbar, so daß bekannte Vorrichtungen nach der Art der US-PS 4 529 123 üblicherweise bis maximal 30 Kw ausgelegt werden.However, it is difficult to use the known pressure oil jet burner with a fan in the known heat radiators, since considerable technical difficulties have to be overcome here. An atmospheric burner creates a soft, relatively cold flame that can be drawn out and therefore produces a uniform heat radiation. A forced draft burner, on the other hand, creates a short, bushy flame with high flame temperatures of, for example, approximately 1300 ° C. This creates a very high temperature in the area of the burner device, which decreases sharply with increasing distance from the burner device. On the other hand, with the atmospheric burners no high powers can be transmitted, so that known devices of the type of US Pat. No. 4,529,123 are usually designed for a maximum of 30 Kw.

Wenn nun versucht würde einen Gebläsebrenner für Öl oder Gas einzusetzen wäre zu berücksichtigen, daß dieser nur eine kurze Flamme mit einem starken Flammkern aufweist. Die hierin liegende Problematik dieser Brenner wurde bisher noch nicht gelöst, weshalb diese Brenner bisher auch noch keine Verwendung bei derartigen Wärmestrahlern gefunden haben. Atmosphärische Brenner können Gas und Verbrennunngsluft laminar in das Brennrohr leiten und so die Flamme über mehrere Meter ausdehnen, was die Temperaturbelastung auf das Rohr automatisch gleichmäßig verteilt, so daß eine Isolierung über die Strahlrohrlänge weder üblich noch erforderlich ist.If an attempt was now made to use a fan burner for oil or gas, it should be borne in mind that it only has a short flame with a strong flame core. The problem of these burners lying here has not yet been solved, which is why these burners have not yet been used in such heat radiators. Atmospheric burners can pass gas and combustion air in a laminar manner into the combustion tube and thus expand the flame over several meters, which automatically distributes the temperature load on the tube evenly, so that insulation over the length of the jet pipe is neither usual nor necessary.

Andererseits ist es erst durch moderne Isolationsmaterialien, die über 1800°C aushalten, überhaupt möglich geworden, Gebläsebrenner einzusetzen. Hierbei waren aber diverse Probleme zu lösen. Ein Problem besteht darin, dar eine Abstimmung des Brenners mit dem Isoliermaterial und dem Rohrdurchmesser erfolgen muß. Die Isolierung war dabei so zu wählen, daß das Strahlrohr an keiner Stelle 420°C überschreitet, um die gewünschte Wäremestrahlung zu erreichen und andererseits auch die Rückstrahlung auf den Brenner nicht zu groß wird. So war einer der Abstimmungspunkte, daß die Strahler gegen Überhitzen einen Sicherheitstemperaturbegrenzer aufweisen müssen.On the other hand, only modern insulation materials that can withstand temperatures above 1800 ° C made it possible to use forced draft burners. Various problems had to be solved. One problem is that the burner has to be matched to the insulating material and the pipe diameter. The insulation was to be chosen so that the radiant tube never exceeded 420 ° C in order to achieve the desired heat radiation and on the other hand the reflection on the burner was not too great. One of the coordination points was that the radiators must have a safety temperature limiter against overheating.

Es ist daher Aufgabe der Erfindung, einen Wärmestrahler der eingangs genannten Art so weiterzubilden daß die Anwendung eines Drucköl-Düsenbrenners mit einem Gebläse möglich wird daß die an die Umgebung abzugebende Wärmemenge in bezug auf den Energieaufwand vergrößert wird, der insgesamt eine große Heizleistung bringt und durch Anpassung der heizwirksamen Oberfläche eine möglichst große Wärmemenge gezielt und gleichmäßig auf zu beheizende Objekte übertragen kann.It is therefore an object of the invention to develop a heat radiator of the type mentioned above so that the use of a pressure oil nozzle burner with a blower is possible that the amount of heat to be released to the environment is increased in relation to the energy expenditure, which brings a large heating power and through Adaptation of the heat-effective surface can transfer the largest possible amount of heat in a targeted and uniform manner to objects to be heated.

Diese Aufgabe wird erfindungsgemäß bei einem Wärmestrahler der eingangs genannten Art dadurch gelöst, daß

  • a) die Brennereinrichtung als Drucköl-Düsenbrenner mit einem Gebläse ausgebildet ist,
  • b) das Strahlungsrohr über seine gesamte Länge mit einer mit zunehmendem Abstand zur Brennereinrichtung eine abnehmende Dicke und/oder Wirksamkeit aufweisende Isolationsschicht versehen ist, und
  • c) das Strahlungsrohr über seine gesamte Länge gasdicht ausgebildet ist und die Brennereinrichtung im Überdruckbereich betreibbar ausgebildet ist, wobei im Strahlungsrohr und/oder im Bereich des Abgasstutzens ein Strömungswiderstand angeordnet ist.
This object is achieved in a heat radiator of the type mentioned in that
  • a) the burner device is designed as a pressure oil nozzle burner with a blower,
  • b) the radiation tube is provided over its entire length with an insulating layer which has a decreasing thickness and / or effectiveness with increasing distance from the burner device, and
  • c) the radiation pipe is designed to be gas-tight over its entire length and the burner device is designed to be operable in the overpressure area, a flow resistance being arranged in the radiation pipe and / or in the area of the exhaust gas nozzle.

Mit dieser Ausbildung ist erreichbar, daß in den Bereichen, wo eine hohe Wärmemenge geballt auftritt, eine Abstrahlung im Infrarotbereich verhindert wird und diese Wärme noch zur Aufheizung der von der Brennereinrichtung weiter entfernten Partien des Strahlrohres zur Verfügung steht. Durch die Verringerung der Wirksamkeit der Isolation kann damit eine ganz gleichmäßige Wärmestrahlung erreicht werden.With this design it can be achieved that in the areas where a large amount of heat occurs, radiation in the infrared range is prevented and this heat is still available for heating the parts of the jet pipe which are further away from the burner device. By reducing the effectiveness of the insulation, very even heat radiation can be achieved.

Weitere bevorzugte Ausführungsformen sind in den Unteransprüchen gekennzeichnet.Further preferred embodiments are characterized in the subclaims.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. Es zeigt

  • Fig. 1 in einer schaubildlichen Ansicht von unten eine Ausführungsform eines Wärmestrahlers,
  • Fig. 2 in einer schematischen Seitendarstellung den Wäremestrahler gemäß Fig.1,
  • Fig. 3 den Wärmestrahler in einer senkrechten Schnittdarstellung gemäß Linie III-III in Fig. 2,
  • Fig. 4 in schematischer Darstellung einen in einem Gebäude angeordneten Wärmestrahler und
  • Fig. 5 in einer Diagrammdarstellung die Raumtemperatur in bezug auf die Raumhöhe für unterschiedliche Beheizungssysteme.
Embodiments of the invention are explained below with reference to the drawing. It shows
  • 1 is a perspective view of an embodiment of a heat radiator,
  • 2 shows a schematic side view of the heat radiator according to FIG. 1,
  • 3 shows the heat radiator in a vertical sectional view along line III-III in FIG. 2,
  • Fig. 4 shows a schematic representation of a heat radiator arranged in a building and
  • 5 shows a diagram of the room temperature in relation to the room height for different heating systems.

Fig. 1 zeigt einen Wärmestrahler mit einem U-förmig gebogenen Strahlungsrohr 10, an dessen einem Ende eine Brennereinrichtung 20 und an dessen anderem Ende ein an einen Kaminabzug anschließbarer Abgasstutzen 30 angeordnet ist, die im Strahlungsrohr 10 einen Unterdruck erzeugt. Durch diesen Unterdruck wird die durch die Brennereinrichtung 20 erzeugte Brennerflamme und das dabei entstehende Verbrennungsgas-Luft-Gemisch von der Brennerseite des Strahlrohres 10 zum Abgasstutzen 30 gezogen und durch diese hinausgesaugt. Das Strahlrohr 10 ist aus Längselementen 11 und 12 und einem Verbindungsstück 13 aufgebaut. Im Bereich des Abgasstutzens 30 ist das Ende des Strahlungsrohres 10 durch einen Reinigungsdeckel 12c verschlossen.1 shows a heat radiator with a U-shaped radiation tube 10, at one end of which a burner device 20 and at the other end of which an exhaust pipe 30 which can be connected to a chimney exhaust is arranged and which generates a negative pressure in the radiation tube 10. Due to this negative pressure, the burner flame generated by the burner device 20 and the combustion gas / air mixture which is produced in the process are drawn from the burner side of the jet pipe 10 to the exhaust gas nozzle 30 and sucked out through the latter. The jet pipe 10 is constructed from longitudinal elements 11 and 12 and a connecting piece 13. In the area of the exhaust pipe 30, the end of the radiation tube 10 is closed by a cleaning cover 12c.

Die aus einem Druckölbrenner 21 und einem Gebläse 22 bestehende Brennereinrichtung 20 ist am brennerseitigen Ende des Strahlungsrohres 10 an einer Schwenkvorrichtung oder einer Tür befestigt, um eine Inspektion zu erleichtern.The burner device 20, which consists of a pressure oil burner 21 and a blower 22, is fastened to a swivel device or a door at the end of the radiation tube 10 on the burner side in order to facilitate an inspection.

Das Strahlungsrohr 10 ist, wie in Fig. 2 dargestellt über seine gesamte Länge L mit einer Isolationsschicht 60 versehen, die eine von der Brennerseite des Strahlungsrohrs 10 her abnehmende Wirksamkeit aufweist. Die Abstufung der Wirksamkeit kann entweder linear gewählt werden oder wird an die Abnahme der Temperatur des Verbrennungsgas-Luft-Gemisches angepaßt, wobei durch die Anordnung der Isolationsschicht 60 erreichbar ist daß das Verbrennungsgas-Luft-Gemisch im gesamten Durchlaufbereich durch das Strahlungsrohr 10 eine relativ hohe Temperatur aufweist, so daß eine gleichmäßige Erwärmung des Strahlungsrohres 10 und damit eine gleichmäßige Abstrahlung möglich ist.As shown in FIG. 2, the radiation tube 10 is provided with an insulation layer 60 over its entire length L, which has an effectiveness that decreases from the burner side of the radiation tube 10. The gradation of the effectiveness can either be selected linearly or is adapted to the decrease in the temperature of the combustion gas-air mixture, whereby the arrangement of the insulation layer 60 makes it possible to achieve a relatively high combustion gas-air mixture in the entire passage area through the radiation tube 10 Has temperature, so that a uniform heating of the radiation tube 10 and thus a uniform radiation is possible.

Die Isolierung 50 im brennerseitigen Bereich des Strahlungsrohres kann durch einen konzentrisch im Strahlungsrohr nahe der Brennereinrichtung 20 angeordneten Rohrstutzen 150 ausgeführt werden, der mit der Brennereinrichtung 20 verbunden ist, wobei der zwischen dem Strahlungsrohr 10 und dem Rohrstutzen 150 gebildete Ringraum 151 auf der der Brennereinrichtung 20 zugewandten Seite verschlossen ist. In dem Ringraum 151 kann eine zusätzliche Isolationsschicht 152 angeordnet werden. Damit ergibt sich eine einfach aufgebaute, sehr wirksame Abschirmung, so daß die direkt vor der Brennereinrichtung 20 aufgebaute Flammfront das Strahlungsrohr nicht beaufschlagt, so daß auch in diesem Bereich eine Abstrahlung im Mitteltemperaturbereich über langweilige Abstrahlung ermöglicht wird.The insulation 50 in the area of the radiation tube on the burner side can be implemented by a pipe socket 150 arranged concentrically in the radiation pipe near the burner device 20, which is connected to the burner device 20, the annular space 151 formed between the radiation pipe 10 and the pipe socket 150 on that of the burner device 20 facing side is closed. An additional insulation layer 152 can be arranged in the annular space 151. This results in a simple, very effective shielding, so that the flame front built directly in front of the burner device 20 does not act on the radiation tube, so that radiation in the medium-temperature range is also made possible in this area via boring radiation.

Über dem Strahler ist ein trapezförmiger Reflektor 40 angeordnet, dessen Innenseite verspiegelt sein kann, um eine bessere Strahlungsreflexion zu ermöglichen. Bevorzugterweise ist der Refektor 40 auf seiner von dem Strahler abgewandten Seite mit einer zusätzlichen Isolationsschicht 41 versehen, so daß eine Isolation zur Raumdecke hin erfolgt, damit fast die gesamte Wärmeenergie zur Raumerwärmung zur Verfügung steht.A trapezoidal reflector 40 is arranged above the radiator, the inside of which can be mirrored in order to enable better radiation reflection. The refector 40 is preferably provided on its side facing away from the radiator with an additional insulation layer 41, so that insulation takes place towards the ceiling so that almost all of the thermal energy is available for heating the room.

Das Strahlungsrohr 10, das einen Durchmesser D so aufweist, daß sich aufgrund der zur Verfügung stehenden Wärmemenge eine langweilige Wärmeabstrahlung ergibt, kann zusätzlich im Bereich seiner sich gegenüberliegenden Seiten 11 a, 12a und/oder im Bereich der nach unten gewandten Seiten 11 b, 12b mit zusätzlichen Isolationen versehen sein, die eine gleichmäßige Wärmeabstrahlung nach unten und zum Reflektor 40 hin bewirken, so daß insgesamt eine gleichmäßige Wärmeabstrahlung ermöglicht wird.The radiation tube 10, which has a diameter D such that there is a boring heat radiation due to the amount of heat available, can additionally in the region of its opposite sides 11 a, 12 a and / or in the region of the downward sides 11 b, 12 b be provided with additional insulations which bring about uniform heat radiation downwards and towards the reflector 40, so that overall a uniform heat radiation is made possible.

Der Wärmestrahler 100 wird bei einer Anordnung in einem Raum über Trägerleisten 42 an einer Raumdecke 31 in geeignetem Abstand aufgehängt. Einendseitig ist er mit der Saugeinrichtung 30 an einen Schornstein 130 angeschlossen, während der am entgegengesetzten Ende des Strahlungsrohrs 10 angeordnete Brenner 20 über eine Ölleitung 72 die einen Ölfilter 73 und eine Ölpumpe 71 aufweist mit einem Öltank 70 verbunden ist. Die Steuerung der Brennereinrichtung 20 erfolgt dabei in an sich bekannter Weise über einen Raumfühler 81 und/oder ein Zeitsteuerungsgerät 80 (Fig. 4).In the case of an arrangement in a room, the heat radiator 100 is suspended on a ceiling 31 at a suitable distance via support strips 42. At one end it is connected with the suction device 30 to a chimney 130, while the burner 20 arranged at the opposite end of the radiation pipe 10 is connected to an oil tank 70 via an oil line 72 which has an oil filter 73 and an oil pump 71. The burner device 20 is controlled in a manner known per se via a room sensor 81 and / or a time control device 80 (FIG. 4).

Wenn ein derartiger Wärmestrahler zur Beheizung von Großräumen verwendet wird, ergeben sich gegenüber konventionellen Heizungssystemen wesentliche Vorteile. Durch die Umwandlung der langweiligen Strahlung beim Auftreffen auf den Körper wird ein Wohlbefinden schon etwa 3° C früher als bei anderen Heizungssystemen erreicht, was zu einem um ca. 15% verringerten Wärmebedarf führt. Da die Temperaturverteilung über die Raumhöhe auch gegenüber konventionellen Heizungen wesentlich günstiger ist, da die Wärme beim Auftreffen der Strahlung unten frei wird, während andere konventionelle Heizungen die Luft erwärmen, die in die Höhe steigt, ist eine weitere Energieeinsparung einer Beheizung mit Wärmestrahlern in Großräumen erreichbar.If such a radiant heater is used to heat large rooms, there are significant advantages over conventional heating systems. By converting the boring radiation when it hits the body, a feeling of wellbeing is achieved about 3 ° C earlier than with other heating systems, which leads to a heat requirement reduction of about 15%. Since the temperature distribution over the room height is also considerably more favorable than conventional heating systems, since the heat is released when the radiation hits it below, while other conventional heating systems heat the air in the height rises, further energy savings from heating with radiant heaters can be achieved in large areas.

Wie in Fig. 5, in der die Wärmeverteilung über der Raumhöhe in Abhängigkeit von der Raumtemperatur dargestellt ist, ergibt sich rein qualitativ die gesparte Energie 3, wenn die Temperaturkurve 1 eines Wärmestrahlers, die beispielsweise am Soll-Meßpunkt einer Temperatur von 15° C aufweist, mit der Temperatürkurve 2 einer Luftheizung verglichen wird, die am Soll-Meßpunkt eine Temperatur von ca. 18° C aufweist.As in Fig. 5, in which the heat distribution over the height of the room as a function of the room temperature is shown, the energy saved 3 is purely qualitative if the temperature curve 1 of a heat radiator, which has a temperature of 15 ° C. at the desired measuring point, for example , is compared with the temperature door curve 2 of an air heater which has a temperature of approximately 18 ° C. at the desired measuring point.

Diese optimale Wärmeverteilung in Großräumen ist jedoch nur dann erreichbar, wenn die Wärmeerzeugung nicht über einen Infrarotstrahler, sondern über einen Mitteltemperaturstrahler mit langwelliger Wärmeabstrahlung durchgeführt wird, und wenn die voranstehend beschriebenen Isolationsmöglichkeiten optimal zur Erreichung der Gleichmäßigkeit der Abstrahlung genutzt werden.However, this optimal heat distribution in large rooms can only be achieved if the heat is not generated via an infrared radiator, but via a medium-temperature radiator with long-wave heat radiation, and if the insulation options described above are used optimally to achieve uniformity of the radiation.

Die gesamte Ausbildung des Wärmestrahlers ist derart konzipiert, daß die Brennereinrichtung im Überdruckbereich betreibbar ist. Hierzu ist das Strahlungsrohr 10 über seine gesamte Länge L gasdicht ausgebildet, und es sind im Strahlungsrohr Strömungswiderstände vorgesehen. So kann beispielsweise ein als Blende 170 ausgebildeter Strömungswiderstand im Bereich des Abgasstutzens 30 angeordnet sein. Hierdurch ergibt sich eine erhebliche Verbesserung des Gesamtwirkungsgrades.The entire design of the heat radiator is designed such that the burner device can be operated in the overpressure range. For this purpose, the radiation tube 10 is made gas-tight over its entire length L, and flow resistances are provided in the radiation tube. For example, a flow resistance designed as an orifice 170 can be arranged in the area of the exhaust port 30. This results in a significant improvement in the overall efficiency.

Weiterhin kann vorgesehen sein, daß im Strahlungsrohr 10 ein oder mehrere (in der Zeichnung nicht dargestellte) Turbolatoren angeordnet sind. Diese als Leitbleche oder Verwirbelungseinrichtungen ausgebildeten Turbolatoren zerstören die laminare Strömung, so daß in der das Strahlungsrohr 10 von der Brennereinrichtung 20 her durchströmenden Gasmenge eine Verwirbelung derart erreicht wird, daß auch die heißen Kerngase des Gasstrahles die Innenwandung des Strahlungsrohres 10 beaufschlagen und die Wärmeabgabe in bezug auf das Gas beschleunigen. Hierdurch wird eine wesentliche Senkung der Abgastemperaturen bei gleichzeitiger Aufrechterhaltung der gewünschten Strahlung erreicht, wodurch der Wirkungsgrad erheblich verbessert wird.It can further be provided that one or more turbolators (not shown in the drawing) are arranged in the radiation tube 10. These turbulators, designed as baffles or swirling devices, destroy the laminar flow, so that swirling is achieved in the amount of gas flowing through the radiation tube 10 from the burner device 20 such that the hot core gases of the gas jet also act on the inner wall of the radiation tube 10 and the heat emission in relation accelerate to the gas. This results in a significant reduction in the exhaust gas temperatures while maintaining the desired radiation, which significantly improves the efficiency.

Claims (5)

1. Thermal radiator for the heating of large areas or rooms with at least one radiation tube (10). On the one end of which a burner facility (20) is disposed and at the other end of which there is disposed an exhaust gas pipe (30) that can be connected to a chimney breeching, in which the radiation tube (10), within the area of the burner facility (20), is provided with a refractory insulation (50:150) for shielding against a direct flame action and against overheating and possesses a large diameter (D) suitable for the emission of long-wave thermal radiation, characterized in that
a) the burner facility (20) is constructed in the form of a pressure oil nozzle burner (21) with a blower (22),
b) the radiation tube (10) over its entire length (L) is provided with an insulating layer (60) which, with increasing distance from the burner facility, possesses a decreasing thickness and/or effectiveness and
c) the radiation tube (10), over its entire length (L), is constructed so as to be gas-proof and in that the burner facility (20) is constructed so as to be operable within the excessive pressure ranges, while inside the radiation tube (10) and/or within the area of the exhaust gas pipe (30), a drag (170) is mounted.
2. Thermal radiator according to Claim 1, characterized in that the insulating layer (60) is disposed on a side which faces away from a reflector (40) so as to cover solely .half the turbulator circumference of the radiation tube (10).
3. Thermal radiator according to Claim 1, characterized in that the insulation (50) is constructed in such a way that it constitutes a socket (150) mounted concentrically inside the radiation tube (10) with an insulating layer (152) disposed within the annular space (151) between the socket (150) and the radiation tube (10).
4. Thermal radiator according to any of the preceding Claims 1 to 3 characterized in that the radiation tube (10, 11, 12, 13) is constructed so as to have the shape of a "U" and, on its oppositely located sides (11a, 12a), is provided with an additional insulation for shielding against a reciprocal thermal radiation action.
5. Thermal radiator according to any of the preceding Claims 1 to 4, characterized in that one Or several turbulators are fitted inside the radiation tube (10).
EP87107646A 1986-06-10 1987-05-26 Infrared radiant heater for large spaces Expired - Lifetime EP0249087B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107646T ATE54742T1 (en) 1986-06-10 1987-05-26 HEATING RADIATORS FOR LARGE SPACE HEATING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8615565U DE8615565U1 (en) 1986-06-10 1986-06-10 Radiant heater for large area heating
DE8615565U 1986-06-10

Publications (2)

Publication Number Publication Date
EP0249087A1 EP0249087A1 (en) 1987-12-16
EP0249087B1 true EP0249087B1 (en) 1990-07-18

Family

ID=6795408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107646A Expired - Lifetime EP0249087B1 (en) 1986-06-10 1987-05-26 Infrared radiant heater for large spaces

Country Status (3)

Country Link
EP (1) EP0249087B1 (en)
AT (1) ATE54742T1 (en)
DE (2) DE8615565U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3925264C1 (en) * 1989-07-29 1990-10-18 Remko Gmbh & Co Kg, 4937 Lage, De Oil or gas fired IR and air heater - has combustion chamber enclosed in jacket to form heat exchange space fed by fan
GB2292214B (en) * 1994-08-10 1998-08-05 Ambi Rad Ltd Space heating appliances
US8656904B2 (en) 2009-09-25 2014-02-25 Detroit Radiant Products Co. Radiant heater

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102555B (en) * 1981-07-17 1985-03-20 Phoenix Burners A heating system
GB2145218B (en) * 1983-07-19 1987-11-25 Admiral Dev Co Radiant heaters
US4529123A (en) * 1983-09-02 1985-07-16 Combustion Research Corporation Radiant heater system

Also Published As

Publication number Publication date
DE8615565U1 (en) 1986-07-31
DE3763756D1 (en) 1990-08-23
EP0249087A1 (en) 1987-12-16
ATE54742T1 (en) 1990-08-15

Similar Documents

Publication Publication Date Title
DE2519091C2 (en) Device for heating a room
DE2846120C2 (en) Water storage heater
DE3147993C2 (en) Metal annealing furnace
DE1609529B2 (en) HEATING SYSTEM WITH HEATING CHAMBER AND PRE-HEATING OF THE SUPPLY AIR
DE69821362T2 (en) METHOD AND DEVICE FOR REDUCING CO AND NOX EMISSIONS IN A HEATER
DE1802196A1 (en) Burner unit for radiator
DE2819552A1 (en) HEATING SYSTEM
EP0249087B1 (en) Infrared radiant heater for large spaces
DE1778150A1 (en) Gas heater
DE2257982A1 (en) WARM-AIR OVEN AND FAN FOR USE IN CONJUNCTION WITH A WARM-AIR OVEN
DE3012588A1 (en) BURNER, IN PARTICULAR INFRARED RADIATORS OPERATING WITH GAS SHAPED FUEL
EP0518880B1 (en) Device for indirectly heating fluids
DE1164059B (en) Heat radiator with flameless surface combustion, especially for space heating
EP0162445A2 (en) Radiation burner
DE323972C (en) Device on ovens for the discharge of highly heated gases
DE2307357C3 (en) Infrared heater operated with liquid fuel
DE1401165A1 (en) Catalytic radiant heater
DE102008007819B4 (en) Installable heat storage furnace
AT259808B (en) Hearth furnace for solid, liquid or gaseous fuels with hot air generation
AT248009B (en) Fire door designed as an air preheater
DE1501968A1 (en) Gas heating burner
DE8026018U1 (en) GAS-OPERATED COOKING AND HEATING UNIT
DE2015908C3 (en) Radiant burner
DE2155583C3 (en) Water heating boiler with a turn burner
AT344222B (en) GAS HEATED RADIATION HEATER

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19871107

17Q First examination report despatched

Effective date: 19880728

ITF It: translation for a ep patent filed

Owner name: ST. TECN. INGG. SIMONI - DE BLASIO

DIN1 Information on inventor provided before grant (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KUENZEL, HAIKO PAUL

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KUENZEL, HAIKO PAUL

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900718

REF Corresponds to:

Ref document number: 54742

Country of ref document: AT

Date of ref document: 19900815

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3763756

Country of ref document: DE

Date of ref document: 19900823

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19910531

26N No opposition filed
BERE Be: lapsed

Owner name: KUNZEL HAIKO PAUL

Effective date: 19910531

ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 87107646.9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950330

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950331

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950419

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960510

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960527

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970131

EUG Se: european patent has lapsed

Ref document number: 87107646.9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980531

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990526

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030526

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050526