EP0312005A2 - Strahlungsheizung - Google Patents

Strahlungsheizung Download PDF

Info

Publication number
EP0312005A2
EP0312005A2 EP88116924A EP88116924A EP0312005A2 EP 0312005 A2 EP0312005 A2 EP 0312005A2 EP 88116924 A EP88116924 A EP 88116924A EP 88116924 A EP88116924 A EP 88116924A EP 0312005 A2 EP0312005 A2 EP 0312005A2
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
intake
radiator
chamber
combustion
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.)
Granted
Application number
EP88116924A
Other languages
English (en)
French (fr)
Other versions
EP0312005B1 (de
EP0312005A3 (en
Inventor
Gerhard Schmidt
Heinz Schmidt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88116924T priority Critical patent/ATE93040T1/de
Publication of EP0312005A2 publication Critical patent/EP0312005A2/de
Publication of EP0312005A3 publication Critical patent/EP0312005A3/en
Application granted granted Critical
Publication of EP0312005B1 publication Critical patent/EP0312005B1/de
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
    • 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
    • F24C1/14—Radiation heating stoves and ranges, with additional provision for convection heating
    • 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

  • the criterion for evaluating a radiant heater are output, efficiency and versatility. Output is important, as in applications such as soil sterilization the sterilization will not occur unless specified heat levels are attained. Efficiency is important as fuel costs may determine whether use of the heater for a specific application is economically viable. Versatility is important as heating requirements from industry to industry, or even within a single industry, vary with the application.
  • the primary object of the present invention is to provide an improved radiant heater.
  • the present invention provides a radiant heater which is comprised of a housing; a combustion chamber in the housing, the combustion chamber defining a central axis and having an intake end having an intake opening thereat and an exhaust end having a discharge opening thereat, the chamber defining a flow passage for products of combustion along the central axis; a heat exchange chamber surrounding the intake end of the combustion chamber; a heat exchanger disposed within the heat exchange chamber; radiator means defining the exhaust end of the combustion chamber for radiating heat radially outwardly of the exhaust end of the combustion chamber, the radiator means having a plurality of fluid flow passages disposed in planes containing the central axis, each of the passages having an inlet end communicating with the combustion chamber and an outlet end opening into the heat exchange chamber, whereby products of combustion enter the passage inlets and flow therealong and into the heat exchange chamber; and reflector means surrounding the radiator means for reflecting axially outwardly of the housing heat radiated by the radiator means.
  • the preferred embodiment of the invention is a radiant heater generally designated by reference numeral 10, which is illustrated in and will now be described with reference to FIGURES 1 through 5 .
  • the primary components of radiant heater 10 are, a housing 12, a combustion chamber 14, a heat exchange chamber 16, a heat exchanger 18, a radiator 20 and a reflector 22.
  • Housing 12 is generally cylindrical in cross­section, having a central core portion 13, and an outer circumference portion 15, which are secured in relative position by a plurality of struts 17 which are welded to portions 13 and 15.
  • Attached to housing 12 are front and rear mounting brackets 24 and 26.
  • Rear mounting brackets 24 has apertures 28 which are adpated to receive a fixed shaft 30.
  • the ends 32 of fixed shaft 30 are received in apertures 34 of supports 36, in order that housing 12 may be mounted in factory premises or on a platform 19 of a trailer 21 as illustrated in FIGURE 1 .
  • Front mounting bracket 26 is adapted to be connected to hydraulic mounts 23 on platform 19, in order that the central axis 38 of radiant heater 10 may be adjusted vertically. Radiant heater 10 is not capable of lateral adjustment, other than through relative positioning of platform 19 upon which heater 10 is mounted.
  • Combustion chamber 14 is disposed within housing 12, and defined central axis 38.
  • Combustion chamber 14 has an intake end 40 having an intake opening 42 thereat.
  • a gas burner 44 Positioned at intake opening 42 is a gas burner 44.
  • Combustion air is provided to burner 44 through fresh air inlet 46, which is connected by air duct 48 to end 50 of burner 44.
  • Combustion chamber 14 has an exhaust end 52 having a discharge opening 54 thereat.
  • Combustion chamber 14 defines a flow passage for products of combustion along central axis 38.
  • Intake end 40 of combustion chamber 14 progressively increases in size about central axis 38 from intake opening 42 towards discharge opening 54.
  • Exhaust end 52 of combustion chamber 14 progressively decreases in size from intake end 40 to discharge opening 54 of combustion chamber 14.
  • Burner 44 has a fuel pump 45 which draws fuel from fuel tank 47 through filter 49 and fuel suction line 51.
  • Burner 44 is a two stage burner and has a first stage nozzle 53 and a second stage nozzle 55.
  • the flow of fuel from fuel pump 45 to nozzles 53 and 55 are controlled by solenoid valves 57, which open to permit the passage of fuel at 34 second intervals. Should the air fuel mixture fail to ignite, solenoid valves 57 remain closed in order to prevent an excess of fuel from being pumped into burner 44. Excess fuel is returned to fuel tank 47 through fuel return line 59.
  • the presence of solenoid valves 57 and fuel return line 59 are safety features to prevent the possibility of explosions.
  • Burner 44 can be adapted for operation on any of a number of fuels, such as propane, natural gas, diesel fuel, kerosene, and the like.
  • Radiator 20 is in the form of a corrugated conical shell having a larger end 56 concentrically disposed about axis 38 and adjacent intake end 40 of combustion chamber 14, and a smaller end 58 concentrically disposed about axis 38.
  • Radiator 20 defines exhaust end 52 of combustion chamber 14 and serves to radiate heat radially outwardly of exhaust end 52 of combustion chamber 14.
  • Radiator 20 has a plurality of corrugations 61 in planes 62 containing central axis 38. Corrugations 61 are open with the exception of an 18 inch portion remote from smaller end 58, which is enclosed forming fluid flow passages 60.
  • Passages 60 have an inlet end opening 64 communicating with combustion chamber 14 and an outlet end 66 remote communicating with heat exchange chamber 16.
  • Conical radiator 20 has an iregular exterior surface 72, which can be attributed to the presence of corrugations 61, which are present on both the interior and exterior surfaces. Corrugations 61 serve to provide a greater surface area for the radiation of heat.
  • Reflector 22 surrounds radiator 20 for reflecting axially outwardly of housing 12 heat radiated by radiator 20. Radiator 20 is made out of materials which are known by the trade name "Ferrotherm 4816". Ferrotherm 4816 was originally developed for use in atomic reactors, and has a composition which includes 79.9% nickel and .29% titanium for resistance to temperature, and 1.2% aluminum for flexibility. The surface of reflector 22 is subjected to a treatment which is described by Krupp Industries of Germany as being "glo-heated”. The applicant has attempted to obtain further particulars of this treatment for the purpose of making a full and complete disclosure, and has been advised that the treatment is a trade secret of Krupp Industries.
  • Heat exchange chamber 16 surrounds intake end 40 of combustion chamber 14.
  • Heat exchange chamber 16 has two annular rings, a collector ring 76 and an exhaust ring 78.
  • Collector ring 76 communicates with outlet end 66 of each of passages 60.
  • Exhaust ring 78 has an opening 80 which is connected to exhaust duct 82. There are two openings 77, which permit communication of exhaust gases between collector ring 76 and exhaust ring 78.
  • Exhaust ring 78 is smaller in size than collector ring 76 as the air has cooled down and contracted somewhat by the time it reaches exhaust ring 78.
  • a heat exchanger 18 is disposed within heat exchange chamber 16.
  • Heat exchanger 18 is comprised of two of pipes, 84 and 86, configured in coils.
  • Pipe 84 is positioned in collector ring 76.
  • Pipe 84 is connected at one end 85 to cold air intake duct 88 and at the opposite end 89 to hot air outlet duct 90.
  • Pipe 84 is formed into nine coils 92 within collector ring 76.
  • An air blower 94 is connected to cold air intake duct 88 at end 85 of pipe 84 to blow ambient air through pipe 84. As air circulates within coils 92 of pipe 84, the air becomes heated by the products of combustion in collector ring 76.
  • End 89 of pipe 84 is adapted to be connected to the duct work of a hot air heating system (not shown).
  • Pipe 86 is positioned in exhaust ring 78.
  • Pipe 86 is connected at one end 95 to cold water intake duct 96 and at the opposite end 97 to hot water outlet duct 98.
  • Cold water intake duct 96 is adapted to be connected to a water source (not shown).
  • a manual control valve 100 is placed at end 95 of pipe 86 to control water flow.
  • Pipe 86 is formed into three coils 102, within exhaust ring 78. As water circulates through coils 102 of pipe 86, the water becomes heated by the products of combustion within exhaust ring 78.
  • End 97 of pipe 86 is adapted to be connected to a network or pipes forming a hot water heating system (not shown).
  • burner 44 is connected to fuel tank 47, and air is drawn through fresh air inlet 46 via air duct 48 until the air/fuel mixture is ignited within combustion chamber 14.
  • the products of combustion pass through intake opening 42 at intake end 40 of combustion chamber 14 and move along central axis 38 to discharge opening 54 at discharge end 52 of combustion chamber 14.
  • At discharge end 52 the products of combustion pass through discharge opening 54 into inlet end 64 of passage 60.
  • the movement of the products of combustion along passage 60 is retarded by baffle partitions 68 and a spiral baffle 70 within passages 60.
  • baffle partitions 68 and a spiral baffle 70 within passages 60.
  • Hot air outlet duct 90 serves a secondary function of preheating the air which enters through fresh air inlet 46 into burner 44. This is accomplished by placing air duct 48 and hot air outlet duct 90 in close proximity such that a partial heat exchange takes place. Preheating the air entering burner 44, assists in combustion, provided the air is not heated to too great an extent. Preheating the air to approximately 50 degrees celsius is viewed as acceptable. Due to the tendency of air to expand when heated, heating the air to too great an extend can create an undesirable back pressure within the system.
  • Corrugations 61 serve to provide a larger surface area for the radiation of heat.
  • Reflector 22 reflects outwardly the heat of radiator 20.
  • radiant heater 10 has increased versatility and adaptability as radiant heat, hot water, or heated air can be supplied as the application demands. It will be apparent to one skilled in the art that radiant heater 10, can be adapted to provide steam heating, by circulating water within heat exchanger 18 until it becomes converted to steam.
  • Radiator 20 is constructed to be able to withstand temperature approaching 1500 degrees centigrade. In controlled tests conducted by the Alberta Research Council, the radiant heat produced was between 1150 and 1250 degrees centigrade, and hot air output was 600 cubic feet per minute at a temperature of 680 degrees centigrade.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Stoves And Ranges (AREA)
  • Electric Ovens (AREA)
  • Air Supply (AREA)
  • Gas Burners (AREA)
  • Cookers (AREA)
  • Central Heating Systems (AREA)
EP88116924A 1987-10-13 1988-10-12 Strahlungsheizung Expired - Lifetime EP0312005B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116924T ATE93040T1 (de) 1987-10-13 1988-10-12 Strahlungsheizung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000549184A CA1267353A (en) 1987-10-13 1987-10-13 Radiant heater
CA549184 1987-10-13

Publications (3)

Publication Number Publication Date
EP0312005A2 true EP0312005A2 (de) 1989-04-19
EP0312005A3 EP0312005A3 (en) 1989-07-19
EP0312005B1 EP0312005B1 (de) 1993-08-11

Family

ID=4136636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116924A Expired - Lifetime EP0312005B1 (de) 1987-10-13 1988-10-12 Strahlungsheizung

Country Status (5)

Country Link
EP (1) EP0312005B1 (de)
JP (1) JPH01252808A (de)
AT (1) ATE93040T1 (de)
CA (1) CA1267353A (de)
DE (1) DE3883138T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629837B2 (en) * 2000-02-10 2003-10-07 Philip C. Carbone Integrated premixed indirect radiant burner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2174789B1 (de) * 1972-03-06 1976-03-05 Entr Indle Chaudronnerie Fr
US3805763A (en) * 1972-08-21 1974-04-23 E Cowan Flush-mountable, self-cooling gas-fired heater
US3763847A (en) * 1972-09-07 1973-10-09 Foster Miller Ass Radiant heater
FR2267524A1 (en) * 1974-04-12 1975-11-07 Florarm Bowl shaped overhead radiant heater - has refractory lined upper shell clamped onto stainless steel lower shell

Also Published As

Publication number Publication date
ATE93040T1 (de) 1993-08-15
JPH01252808A (ja) 1989-10-09
DE3883138T2 (de) 1994-04-14
CA1267353A (en) 1990-04-03
EP0312005B1 (de) 1993-08-11
DE3883138D1 (de) 1993-09-16
EP0312005A3 (en) 1989-07-19

Similar Documents

Publication Publication Date Title
US5022352A (en) Burner for forced draft controlled mixture heating system using a closed combustion chamber
US5791298A (en) Water heater with low emission gas burner
US3267985A (en) Pulse combustion apparatus
CA2130964C (en) Water heater with low nox ceramic burner
CA2123356C (en) Ultra-high efficiency on-demand water heater
US4589374A (en) Spiral corrugated corrosion resistant heat exchanger
US6106276A (en) Gas burner system providing reduced noise levels
CA1046875A (en) Gas boiler, particularly for central heating
US4338888A (en) High efficiency water heating system
US5520537A (en) High-output tube burner
CA2093169C (en) Multiple u-tube down fired water heater
US6725811B1 (en) Water heater with low NOx fiber matrix burner
MXPA96003116A (es) Dispositivo para reduccion de nox para quemador decombustible de encendido con estructura para soporte de colocacion integral.
US3823704A (en) Power burner application to fin tube heat exchanger
US4926798A (en) Process for pulse combustion
US5033450A (en) Radiant heater
US4241720A (en) Pulse combustion apparatus
US4823768A (en) Radiant heater
EP0312005B1 (de) Strahlungsheizung
CA2469438C (en) Finned tube water heater
GB2160967A (en) Gas-fired space heating unit
CA1119507A (en) Pulse combustion apparatus
US4773390A (en) Demand hot water system
US11906159B2 (en) Frustoconical combustion chamber for a fluid heating device and methods for making the same
US4805590A (en) Gas space heating unit

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: A2

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

17P Request for examination filed

Effective date: 19900118

17Q First examination report despatched

Effective date: 19901123

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 ES FR GB IT LI NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930811

Ref country code: FR

Effective date: 19930811

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19930811

Ref country code: CH

Effective date: 19930811

Ref country code: BE

Effective date: 19930811

Ref country code: SE

Effective date: 19930811

Ref country code: LI

Effective date: 19930811

Ref country code: NL

Effective date: 19930811

REF Corresponds to:

Ref document number: 93040

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3883138

Country of ref document: DE

Date of ref document: 19930916

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

Ref country code: GB

Effective date: 19931111

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EN Fr: translation not 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

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

Effective date: 19931111

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19941129

Year of fee payment: 7

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

Ref country code: AT

Payment date: 19950309

Year of fee payment: 7

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

Ref country code: AT

Effective date: 19951012

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

Ref country code: DE

Effective date: 19960702