US3827424A - Radiant heaters - Google Patents

Radiant heaters Download PDF

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Publication number
US3827424A
US3827424A US00325605A US32560573A US3827424A US 3827424 A US3827424 A US 3827424A US 00325605 A US00325605 A US 00325605A US 32560573 A US32560573 A US 32560573A US 3827424 A US3827424 A US 3827424A
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US
United States
Prior art keywords
frusto
corrugations
heater
burner
infra
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
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US00325605A
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English (en)
Inventor
G Brola
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Individual
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Individual
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Publication date
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Publication of US3827424A publication Critical patent/US3827424A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
    • F24C1/08—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating

Definitions

  • ABSTRACT An infra-red radiant heater comprises a combustion [52] U.S. Cl. 126/92 B, 431/328 chamber fined by two oppos te y-directed frusto- 51 1m. (:1. F24c 3/04 conical members joined together at their basee- A [581 Field of Search 126/92 B, 92 R; 431/328, burner s supp e y e of the members and the 431/329 other member has radial corrugations, this latter member being heated by the combustion gases and serving [56] Refer Cit d as an emitter of infra-red radiation. The corrugations UNITED STATES PATENTS direct the combustion gases towards a vent.
  • an infra-red radiant heater a burner, two generally frusto-conical members facing in opposite directions and joined together at their bases, said frusto-conical members defining a combustion chamber, and vent means, one of said frusto-conical members supporting the burner, and the other frusto-conical member having corrugations arranged to direct the combustion gases towards the vent means.
  • the burner can be fed with liquid or gaseous fuel.
  • the combustion gases play upon the said other frusto-conical member, the wall of which constitutes a heat-exchange surface and constitutes an emitter of infra-red radiation.
  • FIG. 1 is a longitudinal section of a heater in accordance with the invention.
  • FIG. 2 is a transverse section of the heater taken at two different levels.
  • the radiant heater shown in the drawing comprises a combustion chamber 1 defined by lower and upper frusto-conical members 2 and 7 facing in opposite directions and joined together at their bases.
  • the lower member 2 has radial corrugations 3 the dimensions and pitch of the corrugations increasing towards the base of the member 2.
  • the corrugations 3 are of channel section having divergent walls.
  • a profiled lining wall 4 is welded within each corrugation and extends along part of the length thereof, the walls 4 defining with the corrugations 3, radial passages 21 for directing the combustion gases; these passages constitute a convector for effecting heat-exchange between the gases and the walls of the lower member 2.
  • the lower member 2 is welded by its base to an annular collector 5 the underside of which contains holes 6, equal in number to the corrugations in the lower member 2; each of the holes 6 in the collector 5 lies opposite one of the radial passages 21 in the lower member 2. 5
  • the upper member 7 is likewise welded at its base to the collector 5.
  • the wall of the member 7 incorporates a number of concentric ridges 8 to strengthen it against deformation and the inner face of the member 7 is lined with a layer of non-rigid refactory material 9.
  • the combustion-chamber assembly thus formed is fixed by means of a detachable flange 14 to a circular plate 15.
  • a metal reflector 16 having a highly polished inner face, is mounted on the periphery of the plate 15 and constitutes the reflector of the heater.
  • the plate 15 In its central portion the plate 15 has an opening over which is arranged the combustion tube 22 of a burner 17.
  • a fan of the burner 22 is mounted on a door 18 which is attached by hinges 19 to the plate 15. By opening the door 18 the burner fan'is displaced to give access to the combustion system located in the combustion tube.
  • a fuel oil pump 20, for feeding liquid fuel to the burner, is coupled to the fan motor shaft.
  • the infra-red radiant heater described operates as follows:
  • the flame leaving the combustion tube 22 passes into the combustion chamber 1 of the heater.
  • the high-temperature combustion gases pass downwardly in the chamber 1 and arrive at the inner surface of the lower member 2.
  • the gases then pass upwardly through the passages 21 towards the base of the member 2; the gases enter the collector 5 via the holes 6 and are discharged to atmosphere through a pipe 10.
  • the flame serves to heat the lower member 2 by radiation and also by convection through the radial passages 21, through which the combustion gases pass. Further, radiant heat transmitted to the upper members 7 is reflected by the refractory lining 9 to the lower member 2, so that practically the whole of the heat content of the flame is transmitted to the lower member 2.
  • the wall of the member 2 is thus raised to a high temperature and the amount of infra-red radiation produced is governed by that temperature.
  • the relatively small amount of radiant heat emitted from the upper cone is reflected by the reflector 16 over an angle of about 140.
  • the radial corrugations 3 in the lower member 2 determine the path of the combustion gases in the combustion chamber, and also facilitate the emission of the infra-red radiation.
  • a fraction of the heat is absorbed by the surrounding air, the result of this being a natural circulation of air around the member 2.
  • the hollows of the corrugations, not being swept by that air circulation, are consequently less cooled, whereby the temperature of the member 2 is higher.
  • the loss of heat by natural convection is reduced by more than 50 percent, so that the emission of infrared radiation is increased by about to percent.
  • high-intensity infra-red radiant energy can be transmitted to a long distance away with the result that the heater is particularly useful for heating large industrial or commercial premises such as, for example, stock-yards or swimmingpools and, in general, places where heating cannot be provided by hot-air convection.
  • vent means one of said frusto-conical members supporting the burner, and the other frusto-conical member having corrugations arranged to direct the combustion gases towards the vent means.
  • a heater as claimed in claim 1 further comprising annular collector means, said collector means joining together the said frusto-conical members and being connected to the vent means, and said collector means having holes opposite the corrugations in the said other of the frusto-conical members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Furnace Details (AREA)
  • Combustion Of Fluid Fuel (AREA)
US00325605A 1972-03-06 1973-01-22 Radiant heaters Expired - Lifetime US3827424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7208554A FR2174789B1 (fi) 1972-03-06 1972-03-06

Publications (1)

Publication Number Publication Date
US3827424A true US3827424A (en) 1974-08-06

Family

ID=9095036

Family Applications (1)

Application Number Title Priority Date Filing Date
US00325605A Expired - Lifetime US3827424A (en) 1972-03-06 1973-01-22 Radiant heaters

Country Status (9)

Country Link
US (1) US3827424A (fi)
JP (1) JPS5029262B2 (fi)
BE (1) BE805975A (fi)
CA (1) CA984283A (fi)
DE (1) DE2310367A1 (fi)
ES (1) ES412255A1 (fi)
FR (1) FR2174789B1 (fi)
GB (1) GB1391861A (fi)
SE (1) SE391798B (fi)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682578A (en) * 1984-10-05 1987-07-28 Flour City Architectural Metals, Division Of E.G. Smith Construction Products, Inc. Infrared radiant heater
US5033450A (en) * 1989-03-30 1991-07-23 Axbridge Holdings Ltd. Radiant heater

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725192Y2 (fi) * 1976-10-14 1982-05-31
JPS5465353U (fi) * 1977-10-19 1979-05-09
CA1267353A (en) * 1987-10-13 1990-04-03 Gerhard Schmidt Radiant heater
DE19919293C1 (de) * 1999-04-28 2000-11-23 Joachim Wuenning Hochtemperatur-Gaserhitzer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE560556A (fi) *
FR1127334A (fr) * 1954-10-30 1956-12-13 Gazelec Appareil de chauffage par rayonnement
US3561422A (en) * 1969-04-01 1971-02-09 Eric Colin Smith Infrared radiation generator
US3716042A (en) * 1971-01-25 1973-02-13 L Smith Conical radiant orchard heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE560556A (fi) *
FR1127334A (fr) * 1954-10-30 1956-12-13 Gazelec Appareil de chauffage par rayonnement
US3561422A (en) * 1969-04-01 1971-02-09 Eric Colin Smith Infrared radiation generator
US3716042A (en) * 1971-01-25 1973-02-13 L Smith Conical radiant orchard heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682578A (en) * 1984-10-05 1987-07-28 Flour City Architectural Metals, Division Of E.G. Smith Construction Products, Inc. Infrared radiant heater
US5033450A (en) * 1989-03-30 1991-07-23 Axbridge Holdings Ltd. Radiant heater

Also Published As

Publication number Publication date
DE2310367A1 (de) 1973-09-13
FR2174789B1 (fi) 1976-03-05
CA984283A (en) 1976-02-24
ES412255A1 (es) 1976-01-01
GB1391861A (en) 1975-04-23
SE391798B (sv) 1977-02-28
JPS496758A (fi) 1974-01-21
FR2174789A1 (fi) 1973-10-19
JPS5029262B2 (fi) 1975-09-22
BE805975A (fr) 1974-02-01

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