EP2583029A1 - Chauffage à air forcé efficace - Google Patents

Chauffage à air forcé efficace

Info

Publication number
EP2583029A1
EP2583029A1 EP11796278.7A EP11796278A EP2583029A1 EP 2583029 A1 EP2583029 A1 EP 2583029A1 EP 11796278 A EP11796278 A EP 11796278A EP 2583029 A1 EP2583029 A1 EP 2583029A1
Authority
EP
European Patent Office
Prior art keywords
flow
forced air
fluid
air heater
heater
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.)
Withdrawn
Application number
EP11796278.7A
Other languages
German (de)
English (en)
Other versions
EP2583029A4 (fr
Inventor
Michael Mullins
Scott Gove
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.)
Enerco Group Inc
Original Assignee
Enerco Group Inc
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 Enerco Group Inc filed Critical Enerco Group Inc
Publication of EP2583029A1 publication Critical patent/EP2583029A1/fr
Publication of EP2583029A4 publication Critical patent/EP2583029A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0488—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using fluid fuel
    • 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
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0057—Guiding means
    • F24H9/0068—Guiding means in combustion gas channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21003—Burners specially adapted for a particular use for heating or re-burning air or gas in a duct
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • Certain embodiments disclosed herein relate generally to heaters. More specifically, certain embodiment disclosed herein related generally to forced air heaters. More specifically, certain embodiment disclosed herein related generally to the efficiency of forced air heaters.
  • Heaters provide heat. Some heaters combust a fuel in air to provide heat. Forced air heaters are heaters that combust a fuel in air to provide heat and which provide a forced air output through an output opening.
  • forced air heaters comprise design elements that are inefficient in one or more ways.
  • forced air heaters are subject to a problem wherein wind or strong currents in ambient air to blow into an output opening and counter to the air output.
  • Wind resistance is the resistance of a forced air heater to wind or strong currents in ambient air blowing into an output opening and counter to the air output.
  • Some forced air heater comprise components adapted to promote wind resistance. Many components adapted to promote wind resistance decrease the efficiency of the forced air heater. Some forced air heater comprise components adapted to promote the mixture of air and fuel. Many components adapted to promote the mixture of air and fuel decrease the efficiency of the forced air heater.
  • inefficiency manifests itself as noise or resistance to air flow through the heater.
  • the forced air heater may comprise a housing defining a duct.
  • the duct may be adapted for a flow of fluid therethrough.
  • the heater may be adapted to provide a flow of fluid through the duct that is substantially laminar or transient.
  • the forced air heater may comprise a housing defining a duct.
  • the duct may be adapted for a flow of fluid therethrough.
  • the heater may be adapted to provide a flow of fluid through the duct where the flow of fluid has a Reynolds Number less than 4000.
  • the forced air heater may comprise a housing defining an elongated interior region.
  • the elongated interior region may have a relative roughness less than 0.05.
  • the elongated interior region may have a first end and second end.
  • the housing may comprise a first opening proximate to the first end and adapted to provide fluid communication therethrough between the environment and the interior region.
  • the housing may comprise a second opening proximate to the second end and adapted to provide fluid communication therethrough between the environment and the interior region.
  • the forced air heater may comprise an air movement device adapted to create an air flow into the first opening and a flow of fluid out of the second opening.
  • the heater may be adapted to produce a fully developed flow of fluid therethrough without producing sound of more than 60 db.
  • the forced air heater may comprise a housing defining an elongated interior region.
  • the elongated interior region may have a relative roughness less than 0.05.
  • the elongated interior region may have a first end and second end.
  • the housing may comprise a first opening proximate to the first end and adapted to provide fluid communication therethrough between the environment and the interior region.
  • the housing may comprise a second opening proximate to the second end and adapted to provide fluid communication therethrough between the environment and the interior region.
  • the second opening may have an area of less than 0.008 square meters.
  • the forced air heater may comprise an air movement device adapted to create an air flow into the first opening and a flow of fluid out of the second opening where the flow of fluid exceeds 0.005 kg/s.
  • the forced air heater may be adapted to produce a fully developed flow of fluid therefrom having a Reynolds Number less than 4000.
  • the forced air heater may be adapted to produce a fully developed flow of fluid therefrom without producing sound of more than 60
  • Figure 1 is a cross-sectional view of a heater
  • Figure 2 is another cross-sectional view of a heater
  • Figure 3 is a cross-sectional view of another heater
  • Figure 4 is a Moody diagram
  • Figure 5 is a view of a baffle
  • Figure 6 is view of another baffle.
  • a forced air heater 50 may comprise a housing 100, a burner 150, and an air movement device 160.
  • a housing 100 may define an interior region 120 adapted to accept a flow of input air 210, a flow of fuel 220, or a flow of a mixture of air 200 and fuel 220; adapted to contain combustion of air 200 and fuel 220, and adapted to output a flow of heat 260 and combustion products 280.
  • Air 200 within the housing 200 may be drawn from input air 210 or from another source or inlet.
  • the housing 100 may be a hollow elongated structure defining an interior region 120 therein.
  • the housing 100 may comprise a first end 102 and a second end 104.
  • the first end 102 may comprise an inlet opening 106 adapted to provide fluid communication therethrough between the environment 90 and the interior region 120.
  • the second end 104 may comprise an outlet opening 108 adapted to provide fluid communication therethrough between the environment 90 and the interior region.
  • the housing 100 may form a duct 110 defining an elongated interior region 120, a first end 102 and a second end 104, an inlet opening 106, and an outlet opening 108.
  • a duct 1 10 is adapted to permit the flow of therethrough of a fluid, such as without limitation, air 200, or a mixture of air 200 and fuel 220, or combustion products 280.
  • an outlet opening 108 may have an area less than 0.2 square meters. In certain embodiments, and without limitation, an outlet opening 108 may have an area less than 0.1 square meters. In certain embodiments, and without limitation, an outlet opening 108 may have an area less than 0.05 square meters.
  • An interior region 120 or a duct 1 10 may be defined by an interior surface 1 15 of a housing 100.
  • An interior region 120 or a duct 110 may be shaped as a box, a prism, a cylinder, or some other shape.
  • a cylindrical shaped duct 1 10 may also be considered a pipe.
  • An interior region 120 or duct 110 may have some definable roughness as the term is used in Figure 4.
  • the housing 100 is adapted for operation wherein input air 210 flows into the first end 102 of housing 100; wherein air 200 is mixed with either fuel 220 or a mixture of air 200 and fuel 220 to form a mixture of air 200 and fuel 220; wherein the mixture is combusted to produce heat 260 and combustion products 280; and wherein the heat 260 and combustion products 280 flow out of the second end 104 of the housing 100.
  • a forced air heater 50 may be adapted to operate in a manner that permits some fraction of the input air 210 that flows into the first end 102 of housing 100 not to participate in the combustion reaction and to flow out of the second end 104 of the housing 100 as output air 290. In certain embodiments, in operation, some fraction of the air 200 that flows into the first end 102 of housing 100 does not participate in the combustion reaction and flows out of the second end 104 of the housing 100 as output air 290.
  • the fraction of the air 200 that flows out of the second end 104 of the housing 100 as output air 290 is heated by heat 260 such that the temperature of output air 290 is higher than that of the input air 210 and may be used to convey heat to the environment 90 or to other regions or objects.
  • a burner 150 may comprise a site for combustion of a mixture of air 200 and fuel 220 to yield heat 260 and combustion products 280.
  • a fuel 220 may comprise kerosene, propane, natural gas, alcohol, mixtures thereof, or other fuels.
  • burner 150 may be supplied with air 200 supplied from the input air 210.
  • burner 150 may be supplied with fuel 220 or a mixture of air 200 and fuel 220.
  • a burner 150 may be supplied with fuel 220 or a combustion a mixture of air 200 and fuel 220 transported to the burner 150 by a pipe 152, hose, conduit, or other fluid conveyance.
  • Fuel 220 may be supplied to the forced air heater 50 by an associated fuel tank, an associated fuel bottle, an associated supply line, or other associated fuel container or source.
  • An air movement device 160 may comprise any device capable of intaking ambient air and providing air flow therefrom.
  • an air movement device 160 may comprise an axial fan 160, a centrifugal fan, a crossflow fan, another type of fan, a blower, an air compressor, a pump, or some combination thereof.
  • an air movement device is adapted to establish an input air flow and output air flow where the output air flow has substantially higher head than does the input air flow.
  • an air movement device 160 may be engaged with the housing 100 so as to be partially or fully encompassed by the housing 100.
  • an air movement device 160 may be engaged with the housing so as to be fully encompassed by an interior region 120 or duct 1 10. In certain embodiments, and without limitation, an air movement device 160 may produce air flow through the forced air heater 50 defined by a linear flow rate, a volumetric flow rate, a mass flow rate, or some other flow criteria. In certain embodiments, and without limitation, air flow may be defined by a linear flow rate within the range of 0 to 50 meters per second. In certain embodiments, and without limitation, air flow may be defined by a volumetric flow rate within the range of 0 to 0.4 cubic meters per second. In certain embodiments, and without limitation, air flow may be defined by a volumetric flow rate within the range of 0 to 0.5 kilograms per second.
  • an air movement device 160 may drive an air flow through the forced air heater 50 which is adapted to impart substantially similar flow to other materials or fluids such as fuel 220, combustion products 280, output air 290, or other fluids.
  • a forced air heater 50 may comprise a baffle 300.
  • a baffle 300 may comprise a mesh, a burner plate, a screen, a flameholder plate, or other perforated surface or perforated plate.
  • a baffle 300 may be substantially flat, may be substantially frustoconical, or may comprise other geometries.
  • a baffle 300 may comprise closed regions 320 and open regions 340. Closed regions 320 are substantially impervious to the flow of air 200 or fuel 220 therethrough. As will be developed further herebelow, closed regions 320 are substantially impervious to the flow of wind or air currents therethrough. Open regions 340 are substantially open to the flow of air 200 or fuel 220 therethrough.
  • open regions 340 are substantially open to the flow of wind or air currents therethrough.
  • open regions 320 may be defined by perforations 310.
  • Perforations 310 may be round, diamond-shaped, or any other shape.
  • a baffle 300 may be a substantially closed baffle 300.
  • a substantially closed baffle 300 may comprise substantially more closed regions 320 than open regions 340.
  • a substantially closed baffle 300 may comprise a baffle 300 wherein the fraction of the area of the baffle defined by closed regions 320 is substantially greater than the fraction of the area of the baffle defined by open regions 340.
  • the percentage of closure is the fraction of the area of the baffle defined by closed regions 320.
  • a substantially closed baffle 300 may be 60% closed, 70% closed, 80% closed, 90% closed, 95% closed, or some other percentage closed.
  • a baffle 300 may be a substantially open baffle 300.
  • a substantially open baffle 300 may comprise substantially more open regions 340 than closed regions 320.
  • a substantially open baffle 300 may comprise a baffle 300 wherein the fraction of the area of the baffle defined by open regions 340 is substantially greater than the fraction of the area of the baffle defined by closed regions 320.
  • a substantially open baffle 300 may be 40%) closed, 30% closed, 20% closed, 10% closed, 5% closed, or some other percentage closed.
  • the percentage of closure of a baffle 300 may substantially influence the flow properties of air 200 fuel 220 or other fluids flowing therethrough.
  • increasing the closure of baffle 300 may increase the resistance to fluid flow therethrough of the interior region 120, or the duct 1 10, or the forced air heater 50.
  • increasing the closure of baffle 300 may increase the friction factor or the relative roughness of the interior region 120 or the duct 1 10.
  • a more closed baffle 300 may promote greater turbulence of a fluid flowing therethrough than would a more open baffle 300.
  • more open baffle 300 may promote greater laminar flow of a fluid flowing therethrough than would a more closed baffle 300.
  • open regions 340 or perforations 310 may define apertures through which air 200 or fuel 220 or other fluids may flow. In certain embodiments, and without limitation, open regions 340 or perforations 310 may be adapted to produce choked flow therethrough,
  • flow may be laminar, turbulent, or in a transition state between laminar and turbulent flow.
  • the flow properties of a fluid in a forced air heater 50 may include the nature of the flow with respect to whether the flow is laminar, turbulent, or transient.
  • Transient flow is in a transition state between laminar and turbulent flow.
  • the Reynolds Number, Re can be used to determine if flow is laminar, transient or turbulent.
  • flow is laminar when Re is less than about 2300; flow is transient when Re is between about 2300 and 4000; and flow is turbulent when Re is greater than about 4000.
  • a forced air heater 50 may be adapted to operate in conditions comprising substantial wind or strong air currents.
  • wind or strong air currents may reverse the direction of flow created by the air movement device 160 within the forced air heater 50, or may blow heat 260 or combustion products 280 into the forced air heater 50, or may otherwise produce undesired operation of the forced air heater 50.
  • a forced air heater 50 may comprise adaptations to prevent wind or strong air currents from reversing the flow within the forced air heater 50, or from blowing heat 260 or combustion products 280 into the forced air heater 50, or from otherwise producing undesired operation of the forced air heater 50.
  • Adaptations to prevent wind or strong air currents from reversing the flow within the forced air heater 50, or from blowing heat 260 or combustion products 280 into the forced air heater 50, or from otherwise producing undesired operation of the forced air heater 50 are adaptations to promote wind resistance.
  • an adaptation that a forced air heater may comprise that promotes wind resistance is a substantially closed baffle 300.
  • increasing the closure of baffle 300 may increase the resistance of the interior region 120, or the duct 110, or the forced air heater 50, to flow therethrough.
  • the percentage of closure of a substantially closed baffle 300 may be chosen to increase the resistance of the interior region 120, or the duct 110, or the forced air heater 50, to flow therethrough and thereby to increase the wind resistance. In some embodiments, and without limitation, as the percentage of closure of the baffle 300 increases, wind resistance increases.
  • an adaptation that a forced air heater may comprise that promote wind resistance is a diffuser 400.
  • a diffuser is a conduit comprising a first opemng 410 and a second opening 420, where the area of the second opening 420 is greater than the area of the first opening 410.
  • the first opening 410 of the diffuser 400 is adapted to receive flow from the air movement device 160.
  • the first opening 410 of the diffuser 400 may be closely engaged with the outlet of the air movement device 160 so that the first opening 410 of the diffuser 400 is adapted to receive substantially all of the flow from the air movement device 160.
  • the diffuser is adapted to receive flow from the air movement device 160 through first opening 410 and for the flow to exit the diffuser 400 through second opening 420.
  • the diffuser comprises only two openings, first opening 410 and second opening 420.
  • the second opening 420 of the diffuser 400 may be closely engaged with the interior surface 115 of the housing 100.
  • a diffuser 400 may be hollow and substantially frustoconical.
  • an adaptation that a forced air heater may comprise that promote wind resistance is a stagnation fitting 430.
  • a stagnation fitting 430 is a plate, block, or other geometry that is impervious to flow.
  • a stagnation fitting 430 is placed along the axis of a hollow and substantially frustum-shaped diffuser 400.
  • a stagnation fitting 430 is placed proximate to the axis of revolution of an air movement device 160 comprising an axial fan.
  • a stagnation fitting 430 is a circular plate placed proximate to the axis of revolution of an axial fan.
  • a forced air heater 50 that comprises certain adaptations, such as a diffuser 400, or a stagnation fitting 430, or both, to promote wind resistance, may not require other adaptations, such as a substantially closed baffle 300, to provide a desired level of wind resistance.
  • a forced air heater 50 may be adapted to promote the mixing of air 200 and fuel 220.
  • an adaptation that a forced air heater may comprise that promotes the mixing of air 200 and fuel 220 is a substantially closed baffle 300.
  • a more closed baffle 300 may promote greater turbulence of a fluid flowing therethrough than would a more open baffle 300.
  • a forced air heater 50 may comprise a substantially closed baffle 300 that is adapted to promote greater turbulence of air 200 and fuel 220 flowing therethrough. Without limitation, turbulence may promote mixing action.
  • a forced air heater 50 may comprise a substantially closed baffle 300 that is adapted to promote greater turbulence of air 200 and fuel 220 flowing therethrough and, thereby, promote the mixing of air 200 and fuel 220.
  • an adaptation that a forced air heater may comprise that promotes the mixing of air 200 and fuel 220 is a venturi 500.
  • a venturi 500 is a device that mixes air and fuel.
  • a venturi 500 may comprise an orifice (not shown) adapted to introduce a fuel 220 from an associated fuel source (not shown), an inlet aperture 520 adapted to introduce air, and an outlet (not shown) adapted to output a mixture of the fuel 220 and air 200.
  • a forced air heater 50 that comprises certain adaptations, such as a venturi 500, to promote the mixing of air 200 and fuel 220, may not require other adaptations, such as a substantially closed baffle 300, to provide a desired level of mixing of air 200 and fuel 220.
  • turbulent flow may also cause, or be correlated with other operational conditions.
  • turbulent flow may cause or be correlated with the formation of eddies, vortices, or other complex flow patterns, increased drag, increased noise, increased inefficiency or some combination thereof.
  • a substantially closed baffle 300 may promote both turbulence and inefficiency in the form of resistance to air flow through the heater.
  • a substantially closed baffle 300 may promote both turbulence and noise stemming directly or indirectly from turbulent flow.
  • Turbulent flow may be substantially louder or noisier than laminar or transient flow.
  • a forced air heater 50 operating with substantially turbulent flow therethrough may produce noise in excess of 50 db, noise in excess of 60 db, noise in excess of 70 db, or noise in excess of 80 db.
  • a forced air heater 50 operating without substantially turbulent flow theretlirough may not produce noise in excess of 60 db, may not produce noise in excess of 50 db, may not produce noise in excess of 40 db, or may not produce noise in excess of 30 db.
  • Turbulent flow may be substantially less efficient than laminar or transient flow.
  • a forced air heater 50 operating with substantially turbulent flow therethrough may require substantially greater power than an otherwise similar forced air heater 50 operating with substantially laminar or transient flow in order to produce a substantially a similar rate of output flow.
  • a forced air heater 50 operating without substantially turbulent flow therethrough may require 10% more power, 20% more power, 30% more power, 40% more power, 50% more power, 60% more power, 70% more power, or 80% more power than an otherwise similar forced air heater 50 operating with substantially laminar or transient flow in order to produce a substantially a similar rate of output flow.
  • a forced air heater 50 may comprise substantially open baffle 300.
  • a forced air heater 50 comprising a substantially open baffle 300 may comprise a diffuser 400 or a stagnation fitting 430, or both to promote wind resistance.
  • a forced air heater 50 comprising a substantially open baffle 300 may comprise a venturi 500 to promote the mixing of air 200 and fuel 220.
  • a forced air heater 50 may comprise a substantially open baffle 300, a diffuser 400, a stagnation fitting 430, and a venturi 500.
  • a forced air heater 50 that operates in a mamier that avoids or does not promote substantial turbulent air flow may benefit from non- turbulent flow that may be quieter and more efficient for lack of some of the drag and noise of turbulent flow.
  • a forced air heater 50 may be adapted to operate in a manner that avoids or does not promote substantial turbulent air flow.
  • a forced air heater 50 adapted to operate in a manner that avoids or does not promote substantial turbulent air flow may operate in a manner such that flow therethrough is substantially laminar, or such that flow therethrough is substantially transient.
  • a forced air heater 50 adapted to operate in a manner that avoids or does not promote substantial turbulent air flow may comprise a diffuser 400 or a stagnation fitting 430, or both to promote wind resistance.
  • a forced air heater 50 adapted to operate in a manner that avoids or does not promote substantial turbulent air flow may comprise a venturi 500 to promote the mixing of air 200 and fuel 220.
  • a forced air heater 50 adapted to operate in a manner that avoids or does not promote substantial turbulent air flow may not comprise a substantially closed baffle 300.
  • a forced air heater 50 adapted to operate in a mamier that avoids or does not promote substantial turbulent air flow may comprise an air movement device 160 adapted to use a relatively small amount of power and still be adapted to produce an output flow rate substantially similar to that of an otherwise similar forced air heater 50 adapted to operate in a manner that promotes substantial turbulent air flow.
  • efficient forced air heater has been described above in connection with the certain embodiments, it is to be understood that other embodiments may be used or modifications and additions may be made to the described embodiments for performing the same function of the efficient forced air heater without deviating therefrom. Further, efficient forced air heater may include embodiments disclosed but not described in exacting detail. Further, all embodiments disclosed are not necessarily in the alternative, as various embodiments may be combined to provide the desired characteristics. Variations can be made by one having ordinary skill in the art without departing from the spirit and scope of efficient forced air heater. Therefore, the efficient forced air heater should not be limited to any single embodiment, but rather construed in breadth and scope in accordance with the recitation of the attached claims.

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)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

Le chauffage à air forcé de l'invention peut comprendre une boîte définissant un tuyau. Le tuyau peut être conçu pour un flux de fluide traversant. Le chauffage peut être prévu pour le passage dans le tuyau d'un flux de fluide qui est sensiblement laminaire ou transitoire.
EP11796278.7A 2010-06-15 2011-06-14 Chauffage à air forcé efficace Withdrawn EP2583029A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35495410P 2010-06-15 2010-06-15
PCT/US2011/040286 WO2011159662A1 (fr) 2010-06-15 2011-06-14 Chauffage à air forcé efficace

Publications (2)

Publication Number Publication Date
EP2583029A1 true EP2583029A1 (fr) 2013-04-24
EP2583029A4 EP2583029A4 (fr) 2013-11-20

Family

ID=45095215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11796278.7A Withdrawn EP2583029A4 (fr) 2010-06-15 2011-06-14 Chauffage à air forcé efficace

Country Status (5)

Country Link
US (1) US20110303211A1 (fr)
EP (1) EP2583029A4 (fr)
CN (1) CN103097816A (fr)
CA (1) CA2802805A1 (fr)
WO (1) WO2011159662A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108235477A (zh) * 2018-03-14 2018-06-29 宁波萨科森工业科技有限公司 一种卡口加热器
USD963817S1 (en) 2020-12-14 2022-09-13 Milwaukee Electric Tool Corporation Portable heater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990854A2 (fr) * 1998-09-29 2000-04-05 Sanyo Electric Co., Ltd. Appareil de chauffage avec volets de redressement inclinés et/ou fonction de réduction de l'odeur due à l'extinction de la flamme
WO2008036515A2 (fr) * 2006-09-18 2008-03-27 Storm Development Llc Système de transfert de chaleur rayonnante
US20080178860A1 (en) * 2007-01-26 2008-07-31 Bernd Schwank Radiant tube heater

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429300A (en) * 1967-04-12 1969-02-25 Carl H Eisentrout Industrial furnace burner
US3998142A (en) * 1975-07-03 1976-12-21 Sterilaire Medical, Inc. Air circulating system for ultra clean areas
US4064203A (en) * 1976-09-16 1977-12-20 Western Magnum Corporation Air-circulating device with air freshener, humidifier, and/or deodorizer
US5914200A (en) * 1993-06-14 1999-06-22 Siemens Aktiengesellschaft High-temperature fuel cell stack arrangement with centrally located exit air space
US6152128A (en) * 1999-09-14 2000-11-28 Desa International Easily-assembled portable forced-air heater with reduced number of components
US6677557B2 (en) * 2000-05-02 2004-01-13 Ibiden Co., Ltd. Ceramic heater
US6357396B1 (en) * 2000-06-15 2002-03-19 Aqua-Chem, Inc. Plate type heat exchanger for exhaust gas heat recovery
US6606801B2 (en) * 2000-06-28 2003-08-19 The Procter & Gamble Company System and process for drying a shoe
HUP0301406A2 (en) * 2000-07-07 2003-08-28 Convec Aps A ventilating device and a building comprising such a ventilating device
US7874835B2 (en) * 2008-03-27 2011-01-25 Schwank Ltd. Radiant tube heater and burner assembly for use therein

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990854A2 (fr) * 1998-09-29 2000-04-05 Sanyo Electric Co., Ltd. Appareil de chauffage avec volets de redressement inclinés et/ou fonction de réduction de l'odeur due à l'extinction de la flamme
WO2008036515A2 (fr) * 2006-09-18 2008-03-27 Storm Development Llc Système de transfert de chaleur rayonnante
US20080178860A1 (en) * 2007-01-26 2008-07-31 Bernd Schwank Radiant tube heater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011159662A1 *

Also Published As

Publication number Publication date
CA2802805A1 (fr) 2011-12-22
WO2011159662A1 (fr) 2011-12-22
US20110303211A1 (en) 2011-12-15
EP2583029A4 (fr) 2013-11-20
CN103097816A (zh) 2013-05-08

Similar Documents

Publication Publication Date Title
ES2435536T3 (es) Quemador de premezcla de gas
EP2072895B1 (fr) Brûleur à gaz avec conduit à air principal amélioré
CN206055626U (zh) 一种螺旋式燃气空气预混器
CN205878158U (zh) 一种叶片式燃气空气预混装置
US10036571B1 (en) Forced air heater burner
CN206514304U (zh) 可调式双级全预混燃气灶引射器
ITPD20110373A1 (it) Dispositivo miscelatore aria-gas per bruciatori a gas combustibile con pre-miscelazione
CN103822349B (zh) 热水器和用于热水器的压力探头
US20110303211A1 (en) Efficient Forced Air Heater
US20120094242A1 (en) Multiple Fuel Manifold System
ITPD20110372A1 (it) Dispositivo miscelatore aria-gas per bruciatori a gas combustibile con pre-miscelazione
WO2012006166A2 (fr) Ensemble soufflante destiné à être utilisé avec un appareil alimenté au gaz
CN207920915U (zh) 蜗壳、风机及燃气热水器
CN204535107U (zh) 用于燃气热水器的排烟系统及具有其的燃气热水器
CN206351005U (zh) 一种高效混合型混料器
CN213101690U (zh) 一种真空炉用螺旋式混气装置
CN208764921U (zh) 具有高效燃气空气掺混结构的全预混表面式燃烧器
EP2817087A1 (fr) Installation et procédé de production d'émulsion d'eau et de gazole
CN207740094U (zh) 混合器及燃气发动机
CN112664978A (zh) 对冲式冷火焰燃烧系统
CN208074952U (zh) 腔内预混安全仓
CN211159323U (zh) 一种方形文丘里混合器
CN206771350U (zh) 具有文丘里调节器的燃烧装置
CN204460217U (zh) 一种用于红外灶具燃烧器的燃气预混合引射器
CN201438035U (zh) 带消除气流噪音装置的预混式燃气壁挂炉

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

17P Request for examination filed

Effective date: 20130115

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20131017

RIC1 Information provided on ipc code assigned before grant

Ipc: F24H 9/00 20060101ALI20131011BHEP

Ipc: F24H 3/04 20060101ALI20131011BHEP

Ipc: F22B 37/00 20060101AFI20131011BHEP

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140517