WO1999043993A1 - Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur - Google Patents

Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur Download PDF

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Publication number
WO1999043993A1
WO1999043993A1 PCT/CA1998/000155 CA9800155W WO9943993A1 WO 1999043993 A1 WO1999043993 A1 WO 1999043993A1 CA 9800155 W CA9800155 W CA 9800155W WO 9943993 A1 WO9943993 A1 WO 9943993A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
gas
heater
fired heater
air
Prior art date
Application number
PCT/CA1998/000155
Other languages
English (en)
Inventor
Charles Cote
Henry Nachaj
Kébir Ratnani
Original Assignee
Centre Des Technologies Du Gaz Naturel
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 Centre Des Technologies Du Gaz Naturel filed Critical Centre Des Technologies Du Gaz Naturel
Priority to EP98905178A priority Critical patent/EP1058804B1/fr
Priority to TR2000/02540T priority patent/TR200002540T2/xx
Priority to AU60854/98A priority patent/AU6085498A/en
Priority to PCT/CA1998/000155 priority patent/WO1999043993A1/fr
Publication of WO1999043993A1 publication Critical patent/WO1999043993A1/fr

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
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/142—Connecting hydraulic components
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/148—Arrangements of boiler components on a frame or within a casing to build the fluid heater, e.g. boiler

Definitions

  • the present invention relates to an external gas-fired heater and particularly, but not exclusively, incorporating a natural gas heater for heating a water/glycol fluid and wherein the heater is provided within a housing which precludes unauthorized access thereto and still further wherein the heater is easy to repair or replace.
  • Heating devices for heating homes or small buildings having heating capacities of from about 70,000 to about 150,000 Btu are usually mounted internally of such buildings and such have inherent disadvantages.
  • the furnace or heater occupies interior space in the building and often a specific furnace room has to be provided for security. It is also necessary to have a fresh air duct connected to such furnace and this often results in excessive cold air intrusion within the building, as the air duct must penetrate the outside wall of the building. These heaters or furnaces also generate noise and release gas or oil scent within the building. It is also necessary tc construct a chimney to evacuate the combustion products from the furnace, and if there are leaks in the piping which connects the furnace to the chimney, then this could cause serious health problems to the occupants of the building.
  • furnaces consume electricity, which is a high-cost commodity, as compared to natural gas.
  • a still further disadvantage of such furnace is that they are often difficult to repair or replace.
  • the efficiency of some of these known furnaces can also be inferior - 2 -
  • Another feature of the present invention is to provide an external gas-fired heater which is secured externally of a building to be heated and which is easy to service, repair and replace.
  • Another feature of the present invention is to provide an external gas-fired heater which is safe for children and access to which is provided only to authorized people.
  • Another feature of the present invention is to provide an external natural gas-fired heater for heating a water/glycol fluid to produce a heat exchange medium to feed heat exchange devices located inside a building to be heated by the heater.
  • the present invention provides an external gas-fired heater for heating a fluid for use as a heat exchange medium.
  • the heater comprises a housing securable outside a building to which heated fluid is - 3 -
  • a heating coil is supported in the housing and through which is convected the fluid.
  • a combustion chamber contains the heating coil.
  • a cylindrical gas burner is disposed inside the coil to heat the coil and the fluid.
  • An air/gas mixing blower is connected to the gas burner to feed a combustible air/gas mixture thereto.
  • Exhaust means is provided to evacuate flue gases from the combustion chamber to atmosphere.
  • An ignitor is provided to ignite the air/gas mixture at the gas burner.
  • a flame detector is provided to detect a flame at the gas burner.
  • the housing has an access panel to permit access to the interior of the housing. Lock means secures the panel to the housing.
  • Convection means provides air circulation inside the housing. Coupling means permit use of installation and removal of the housing or equipment therein.
  • FIG. 1 is a perspective view of the external gas-fired heater housing of the present invention secured to a wall of a building;
  • FIG. 2 is a fragmented front view of the external gas-fired heater of the present invention
  • FIG. 3 is a fragmented side view of Fig. 2
  • FIG. 4 is a sectional top view of Fig. 2;
  • FIG. 5 is an exploded view showing the basic component parts of the external gas -fired heater
  • FIG. 6 is a fragmented perspective view showing a modification of the exhaust conduit secured to the top end of the combustion chamber; - 4 -
  • FIG. 7 is an exploded perspective view showing the construction of the housing.
  • FIG. 8 is a simplified schematic view showing the external gas-fired heater utilized on a roof unit for buildings.
  • Fig. 1 there is shown generally at 10 the external natural gas-fired heater of the present invention housed within a housing 11 which is secured to the wall 12 of a building or roof unit.
  • the housing 11 is a rectangular housing provided with a detachable cover 13 which forms the front wall 13' and top wall 13" of the housing whereby to provide access to the component parts of the heater and to provide security.
  • Feed pipe 14 supplies the natural gas to the internal burner, as will be described later, and pipes 15 provide circulation of a heated liquid to the building for heat exchange with heaters (not shown) provided therein.
  • a thermally insulated combustion chamber 16 is secured in an upper portion of the housing 11 and has a heating coil 17 mounted therein.
  • the heating coil is comprised of two concentrically disposed spiral coils 17' and 17" of heat conductive material, and which are serially connected to one another, and have an inlet 18 and an outlet 19 through which a water/glycol mixture is circulated by a pump 20.
  • a temperature and pressure gauge 21 monitors the glycol solution at the outlet of the coil.
  • a cylindrical natural gas burner nozzle 22 is supported concentrically at the center of the heating coil 17 and is supplied a natural gas/air mixture by the mixing blower 23 to heat the spiral coil 17', 17", and hence the water/glycol liquid solution circulated therethrough.
  • this solution is a 50/50 mixture.
  • other suitable solutions may be used, but it has been found that the particular glycol/water mixture provides for the mixture to be operational from about -40 °F to about 180 °F making it ideal for harsh northern climates.
  • An ignitor 24 ignites the cylindrical burner 22 and a flame is detected by a flame detecting probe 25 mounted adjacent the burner 22. Controls for these are provided on a control panel 45.
  • the combustion chamber 16 is comprised of a thermally insulated cylindrical metal container 26 having a bottom wall and on which is disposed a bottom circular refractory disc 27.
  • a top refractory disc 28 is disposed over the heating coil 17 to reduce heat loss from the container and to increase the exchange efficiency of the heater.
  • a top wall 29 is secured over the top end 26' of the cylindrical container 26.
  • the refractory disc 28 is a solid disc to force the flue gas through the heating coil spirals and up above the disc 28 periphery and then through the evacuating portion of the wall 29.
  • the flue gases which are convected through the port 29* is directed into an exhaust duct which, as shown in Fig. 5, is constituted by an intake pipe 30 which interconnects the port 29' to an exhaust conduit 31 which extends through the housing 11 from a top end to a bottom wall 11' of the housing.
  • the outlet end 32 of the exhaust pipe 31 communicates the flue gases to atmosphere through an orifice 33 provided in the - 6 -
  • FIG. 6 illustrates an alternative embodiment of the exhaust conduit for use in less cold climatic regions and, as herein shown, it may be provided by an intake pipe 34 secured about the port 29' of the top wall 29 of the combustion chamber, and having diametrically opposed exhaust ducts 35 to release the combustion products from the opposed sides of the top wall 13" of the cover 13.
  • the top wall has notches 36 on opposed side walls 37 thereof to accommodate the ducts 35.
  • the various component parts of the heater are individually removably secured within the housing 11 by individual attachment brackets, such as bracket 38 and quick connectors 39, to permit the entire housing and its component parts and wiring to be removed in a very short period of time for replacement and/or for servicing elsewhere than on site if need be.
  • These quick connectors connect the gas pipes and heating fluid pipes.
  • the gas pipe feeds a gas valve 40 and an interchangeable orifice plate 41 regulates the amount of gas which is fed to the blower 23 for admixture with air.
  • the ga supply and orifice plate are connected to blower 23 by an orifice plate 41'.
  • a pressure control switch 42 and a temperature limiting probe 43 are secured to the heated fluid pipes 15, 15'.
  • An air/gas mixture control 47 is provided on the control panel 45, and this control panel is mounted internally of the housing 11 and is accessible only to authorized personnel who have access to the key lock 50.
  • the housing 11 is a rectangular housing having an L-shaped removably detachable cover 13.
  • the front wall 13' of the cover 13, in a lower inner section thereof, is provided with a spaced internal metal wall 53 to form a narrow convection passage 54 to feed air internally of said housing adjacent the top end of the cover, as shown in Fig. 1.
  • Access holes 56 are punched in the bottom wall 11 ' of the housing to accommodate the necessary piping and wiring.
  • the heater as above described, has a heating capacity of about from 30,000 to 200,000 Btu/h and is easily adjustable by interchanging the orifice plate 41 to deliver the required heat capacity within that range.
  • the housing 11 is also mounted on an exterior wall of a building to which the hot water/glycol solution is to be fed.
  • Fig. 8 shows a typical embodiment wherein the heater 10 is mounted on the roof of a building.
  • the feed line 15 of the water/glycol solution is fed to a heat exchange device 60 located inside the duct work 61 and through which air is circulated to heat the air.
  • An expansion valve 63 is connected in the line 15.
  • a mixing valve 64 is also secured to the fluid pipe 15 to prevent passage of cold water/glycol solution.
  • the hot glycol solution is circulated through the heat exchange coil 60 where it cools and is then returned to the heating coil 17 through the return pipe 15'.
  • the advantage of the heater being mounted externally of the housing results in a saving of space within the building and the air supply for the heater is taken - 8 -
  • the heater can also be utilized to replace existing electric heaters by natural gas heaters.
  • the heater is also easy to operate and provides of ease of maintenance. It has been found that the efficiency of the heater of this invention is superior to 83% and that the N0 X emission is inferior to 30 ppm at 3% 02-
  • the construction of the heater housing is also aesthetically pleasing to the eye and provides added safety by locking the heater components inside a housing which is accessible to authorized persons only. Because the housing is wall-mounted, such as on support brackets 11" as shown in Fig.
  • the heater of the present invention also results in a reduction in cost of operation as compared to electricity. It also provides a more compact housing than competitive heaters. It may also be used to heat water or swimming pools, radiant floors, radiators and a multitude of other devices or may have other uses. It is pointed out that tests have shown that the external gas-fired heater of the present invention has a jacket heat loss of only about 2%. It is also feasible to utilize the gas-fired heater for applications in buildings having three rooms only or to triplex-type buildings where there may be 15 to 20 rooms. The units can also be fabricated in different sizes to supply form about 30 to 2000,000 Btu or from 40 to about 200,000 Btu. - 9 -

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)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Cette invention se rapporte à un appareil de chauffage extérieur alimenté au gaz, qui sert à chauffer un fluide eau/glycol et qui comprend à cet effet un logement (11) contenant une chambre de combustion. Cette chambre comporte un serpentin (17) à travers lequel le fluide eau/glycol est mis en circulation et chauffé par un brûleur à gaz cylindrique (22) disposé dans le serpentin, qui l'entoure à distance. Le logement (11) est conçu pour être monté à l'extérieur d'un bâtiment, dans lequel le fluide chauffé est amené par convection pour l'échange thermique avec les dispositifs chauffants contenus dans le bâtiment. Un revêtement (13) est monté amovible dans le logement (11) pour permettre l'accès aux dispositifs de chauffage internes et ce revêtement est équipé pour amener l'air par convection dans le logement (11) pour la soufflante de mélange air-gaz (23). Des raccords rapides (39) permettent au logement d'être démonté et remplacé, si nécessaire. Le revêtement (13) facilite également l'accès aux dispositifs de chauffage pour leur entretien ou leur remplacement.
PCT/CA1998/000155 1998-02-24 1998-02-24 Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur WO1999043993A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98905178A EP1058804B1 (fr) 1998-02-24 1998-02-24 Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur
TR2000/02540T TR200002540T2 (tr) 1998-02-24 1998-02-24 Dıştan gaz ateşlemeli su/glikol ısıtıcısı.
AU60854/98A AU6085498A (en) 1998-02-24 1998-02-24 External gas-fired water/glycol heater
PCT/CA1998/000155 WO1999043993A1 (fr) 1998-02-24 1998-02-24 Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1998/000155 WO1999043993A1 (fr) 1998-02-24 1998-02-24 Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur

Publications (1)

Publication Number Publication Date
WO1999043993A1 true WO1999043993A1 (fr) 1999-09-02

Family

ID=4173276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1998/000155 WO1999043993A1 (fr) 1998-02-24 1998-02-24 Appareil de chauffage d'eau/glycol alimente au gaz, place a l'exterieur

Country Status (4)

Country Link
EP (1) EP1058804B1 (fr)
AU (1) AU6085498A (fr)
TR (1) TR200002540T2 (fr)
WO (1) WO1999043993A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132692A2 (fr) * 2000-03-10 2001-09-12 Comercial Caravaning, S.C. Chauffe-eau instantané à gaz pour caravane

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017210150A1 (de) * 2017-06-19 2018-12-20 Robert Bosch Gmbh System zur Energiebereitstellung und/oder Ventilation eines Gebäudes sowie ein Gehäuse
CN109579280A (zh) * 2018-12-28 2019-04-05 广东顺德大派电气有限公司 一种自适应燃气热水器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052055A1 (fr) * 1980-11-07 1982-05-19 SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme Chaudière étanche à échangeur cylindrique
FR2502755A1 (fr) * 1981-03-30 1982-10-01 Piquet Jean Appareil electrique de chauffage d'eau ou d'autre fluide caloporteur notamment pour installation de chauffage central a circulation de fluide
EP0236345A1 (fr) * 1985-04-29 1987-09-16 American Telephone & Telegraph Systemes optiques pourvus de rotateurs de polarisation antireciproques.
EP0297765A2 (fr) * 1987-06-30 1989-01-04 AT&T Corp. Connecteur biconique à fibres optiques
US4893609A (en) * 1986-09-26 1990-01-16 Teledyne Industries, Inc. Wind-resistant outdoor heating appliance
US5203500A (en) * 1989-09-19 1993-04-20 Gas-Fired Products, Inc. Apparatus and method for converting an electric water heater to use gas
US5516278A (en) * 1995-03-08 1996-05-14 Aos Holding Company Forced draft mixer and burner assembly with pressure distribution device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052055A1 (fr) * 1980-11-07 1982-05-19 SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme Chaudière étanche à échangeur cylindrique
FR2502755A1 (fr) * 1981-03-30 1982-10-01 Piquet Jean Appareil electrique de chauffage d'eau ou d'autre fluide caloporteur notamment pour installation de chauffage central a circulation de fluide
EP0236345A1 (fr) * 1985-04-29 1987-09-16 American Telephone & Telegraph Systemes optiques pourvus de rotateurs de polarisation antireciproques.
US4893609A (en) * 1986-09-26 1990-01-16 Teledyne Industries, Inc. Wind-resistant outdoor heating appliance
EP0297765A2 (fr) * 1987-06-30 1989-01-04 AT&T Corp. Connecteur biconique à fibres optiques
US5203500A (en) * 1989-09-19 1993-04-20 Gas-Fired Products, Inc. Apparatus and method for converting an electric water heater to use gas
US5516278A (en) * 1995-03-08 1996-05-14 Aos Holding Company Forced draft mixer and burner assembly with pressure distribution device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132692A2 (fr) * 2000-03-10 2001-09-12 Comercial Caravaning, S.C. Chauffe-eau instantané à gaz pour caravane
EP1132692A3 (fr) * 2000-03-10 2003-01-22 Comercial Caravaning, S.C. Chauffe-eau instantané à gaz pour caravane

Also Published As

Publication number Publication date
EP1058804A1 (fr) 2000-12-13
EP1058804B1 (fr) 2002-11-13
TR200002540T2 (tr) 2001-01-22
AU6085498A (en) 1999-09-15

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