US3537431A - Outdoor gas-burning appliance - Google Patents

Outdoor gas-burning appliance Download PDF

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Publication number
US3537431A
US3537431A US792463*A US3537431DA US3537431A US 3537431 A US3537431 A US 3537431A US 3537431D A US3537431D A US 3537431DA US 3537431 A US3537431 A US 3537431A
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US
United States
Prior art keywords
appliance
air
inlet
gas
combustion
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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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US792463*A
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English (en)
Inventor
Robert M Ramey
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.)
TDY Industries LLC
Original Assignee
Teledyne Inc
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Filing date
Publication date
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Publication of US3537431A publication Critical patent/US3537431A/en
Assigned to TELEDYNE INDUSTRIES, INC. reassignment TELEDYNE INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TELEDYNE, INC., A CORP. OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel

Definitions

  • This invention relates to heating devices and more particularly to outdoor gas burning appliances.
  • All gas burning appliances are usually provided with a combustion chamber having a gas burner located therein which is supplied with a quantity of gas and air under pressure.
  • the air-gas mixture is ignited by a pilot burner as it leaves the gas burners; after which the mixture combusts within the chamber.
  • a source of secondary air also enters into the combustion chamber from an intake opening to mix with the original air-gas mixture to aid in the combustion process.
  • the flue products rise and exhaust through an outlet located above the combustion chamber.
  • a heat transfer device is located below the outlet directly in the path of the combustion products.
  • the heat transfer device usually includes a plurality of conduits extending across the outlet whereby the generated heat energy is transferred through the device to heat the fluid traveling through the conduits.
  • an updraft condition causes a significant amount of uncombusted products to exhaust into the atmosphere which, of course, is unsafe and hazardous.
  • both conditions also create nuisance shutdowns of the appliance by extinguishing the pilot burner.
  • prior gas burning appliances included a stack connected to the outlet to permit the outlet to function independently of wind velocities and static air pressure around or near the stack.
  • various means such as draft diverters. barometric dampers and vent hoods have been designed to correct this deficiency.
  • a draft diverter provides a relief opening through which any downdrafts from the atmosphere are spilled or deflected into the room rather than entering the flueways of the appliance.
  • the barometric damper is an ad
  • these stack means have been necessary to overcome the abovementioned problems, various shortcomings are encountered which make these stacks undesirable. The most notable shortcomings is that such stack means are quite unsightly.
  • stacks are usually required to extend over the surrounding structures, such as fences or eaves. If the appliance is used as a swimming pool heater the unsightly stack is usually clearly visible. Another disadvantage resulting from the use of this device is if the heating appliance were located at the top of the building a larger frontal wallabove the main structure of the building must be erected to hide the stack from view.
  • the gas burner appliance includes secondary air inlet means which is located adjacent the outlet means to enable both means to be exposed to the same static air conditions
  • Thedevice is also provided with a baffle construction located within the inlet to impede the high velocity winds and create a larger static air pressure. Blades are also longitudinally spaced at the mouth of the inlets to further create a turbulence to impede the flow of air, and further to dampen any cross winds approaching the appliance from any direction.
  • the invention fulfills a primary object by providing a gas-burning appliance that is capable of operating under any adverse wind conditions without the use ofany stack means or the like.
  • FIG. 1 is a perspective view of the gas-burning appliance in accordance with the invention:
  • FIG. 2 is a front cross-sectional view of the gas-burning appliance taken along lines 2-2 of FIG. I;
  • FIG. 3 is a side cross-sectional view of the gas-burning appliance taken along lines 33 of FIG. 2.
  • FIG. I shows a gas burning appliance, indicated generally by arrow 10, that is adapted to be used as an outdoor water heater.
  • a gas burning appliance indicated generally by arrow 10
  • FIG. I shows a gas burning appliance, indicated generally by arrow 10, that is adapted to be used as an outdoor water heater.
  • arrow 10 a gas burning appliance, indicated generally by arrow 10.
  • such a device could easily be adapted to heat any gas or liquid.
  • the gas burning appliance 10 includes four external walls 11 being joined at their ends to form a rectangular housing which completely encloses the interior of the appliance.
  • the front wall 11 is removable to permit access to the interior of the appliance 10.
  • the front wall ll includes a horizontal groove I2 formed therein to provide a gripping surface for the operator's hands.
  • a vent hood is a form the bottom surface of secondary air inlet ports 13 which extends around the periphery of the appliance 10.
  • the upper portion of the inlet ports 13 is formed by a wind baffle assembly which is made of four lateral sections 14 that are joined at their ends to extend around the periphery of the appliance 10.-The advantage of having the inlet ports 13 extend around the periphery of the appliance 10 is that the air supply will not be dependent on the wind blowing from any one direction.
  • the interior of the air inlet means will be described in greater detail hereinafter with reference to FIGS. 2 and 3.
  • a plurality of blades are longitudinally spaced within the inlet ports 13, about the periphery of the appliance 10.
  • Each blade 15 is triangularly shaped with the apex being formed at the mouth of the inlet and the sides thereof extending into the interior of the inlet 13.
  • the blades 15 function to impede the travel of the air entering the inlet ports 13 thereby creating a turbulence about the inlet to slow down the air velocity and increase the static air pressure within the appliance 10.
  • the blades 15 further function to dampen any cross winds that approach the appliance 10 from any direction, thereby negating the possibility of a reverse flow condition being created at the air inlet 13.
  • a protective screen 16 is mounted on the top side of the appliance 10 within the interior of the baffle assembly 14. The screen 16 functions to protect the interior of the appliance 10 from any leaves, debris or the like, while still per mitting the passage of air therethrough.
  • a temperature control box 17 which also houses the water inlet and outlet conduits 18 for connection to external water pipes in the conventional manner.
  • the conduits 18 also extend to the interior of the appliance 10 for connection to a heat transfer device that will be described in greater detail with reference to FIGS. 2 and 3.
  • the water temperature controls are electrically connected to the thermostatic controls located within the appliance 10 in the conventional manner.
  • each section 14 of the baffle assembly is comprised of a single sheet of metal formed into a O shaped configuration.
  • Each of the C-shaped sections 14 is connected by brackets, not shown, to the upper sections of the side walls 11.
  • the protective screen 16 is also mounted at its corners to the upper sections of the walls 11 by means of brackets 20.
  • the interior of the appliance 10 adjacent the inlet ports 13 forms a plenum chamber 21 for collecting the air entering therein.
  • the front portion of the interior of the appliance 10 includes a passageway or conduit 22 which communicates with the plenum chamber 21.
  • the passageway 22 extends downwardly to the bottom of the appliance l0 and then around a base 23 which is mounted on a floor panel 24.
  • the base 23 is positioned inwardly from the walls 11 and cooperates with the walls 11 to form the bottom portion of the passageways 22.
  • the base 23 is also utilized to support a plurality of firewalls 25 by means of brackets 25' that is integrally connected thereto.
  • the firewalls 25 are of a castable refractory material and are positioned to form a rectangular com bustion chamber 26.
  • firewall assembly Located adjacent the exterior sides ofthe firewalls 25 are four sections of fiberglass insulation 27.
  • a heat shield 28 (FIG. 3) of aluminum foil is mounted adjacent the forward section of fiberglass insulation 27.
  • the upper ends of firewall assembly are capped with channels 30 to seal the construction thereof and to protect the assembly from any exterior elements.
  • a plurality of louvers 31 are formed on each side of the base 23 to permit communication of the passageway 22 with the interior of the combustion chamber 26.
  • a plurality of gas burners 32 are longitudinally spaced across the front section of the base 23 with each burner 33 extending completely across the combustion chamber 26 to the back end thereof. The forward end of each burner 32 extends into the passageway 22 and is connected to a gas supply means (not shown) which is of a conventional construction.
  • the top ends of the firewalls 25 form the outlet or exhaust means 33 to exhaust the products of combustion from within the combustion chamber 26.
  • a bank of conduits 34 which form the water tube assembly or heat exchange device.
  • the bank of conduits 34 is a continuous pipe that provides a single path of flow for the water to be heated, with the initial and final ends thereof being connected to the conduits 18.
  • a flue collector assembly which is of a dome-shape construction with the base section adapted to be mounted on the firewalls 25.
  • the plenum chamber 21 extends around the flue collector 35 and is further defined at its upper end by a plate 36.
  • the plate 36 has an aperture 37 for receiving the flue collector 35 with the outer extremities of the plate 36 extending nearly to the interior of the baffle sections 14. Since the appliance 10 has been designed for outdoor use, any rain that enters the combustion chamber 26 through the openings of the flue collector 35 will drop to the floor panel 24 and exit the appliance 10 through a plurality of drainholes (not shown) located thereon. Any rain that collects on the plate 36 will run off onto the baffle sections 14 and then onto the top sections of the external walls 11 to be directed to the outside of the appliance.
  • gas under air pressure is supplied to the gas burners 32 and is ignited by pilot burner, not shown, as the airgas mixture exits through the gas burners 32.
  • the air-gas mixture then combusts within the combustion chamber 26.
  • the secondary air enters through the inlet ports 13 into the plenum chamber 21.
  • the air then travels downwardly through the conduit 22 to the base 23, and finally through the louvers 31 to enter the combustion chamber 26 to mix with the original air-gas mixture to aid in the combustion thereof.
  • the hot gases generated within the combustion chamber 26 are transferred upward by convection through the bank of conduits 34 for heating the water flowing therethrough.
  • the flue products of combustion are then collected through the flue collector 35 and are exhausted therethrough to the atmosphere.
  • this appliance has been described as a gas burning device, this structure could easily be modified to operate as an oil burning appliance. Furthermore, this appliance could also be easily modified for indoor use by simply removing the screen 16, fitting a stack to the top of the flue collector 35 and leading the stack through the roof to the outside atmosphere.
  • a stackless heating appliance adapted for outdoor instal lation comprising:
  • a plurality of vertically oriented wall portions housing a combustion chamber
  • burner means extending into the combustion chamber for combusting an air-gas mixture
  • a plenum chamber located within the external wall means communicating with burner means;
  • heat transfer means located above and communicating with the combustion chamber for receiving the heat energy generated thereby;
  • inlet means provided on an upper extremity of at least one of said wall portions for channeling air into said plenum chamber, said inlet means being positioned in a horizontal plane; exhaust means including an exhaust port communicating with the combustion chamber for discharging the flue.
  • said exhaust port terminating in horizontal plane immediately adjacent the horizontal plane of said inlet means for positioning the inlet means and the exhaust port termination in the same pressure zone;
  • air velocity spoiling means forming a portion of the inlet means and extending above the horizontal plane of the exhaust port termination for increasing the static air pressure at both the inlet means and the exhaust port termination to stabilize combustion conditions at said burner means.
  • the exhaust means includes a flue collector assembly comprising a dome positioned over the combustion chamber with the top of the said dome being apertured to form the exhaust port.
  • the invention of claim 3 including a plate extending transversely across the top of the appliance to form the top wall portion of the plenum chamber, said plate further including an aperture formed thereon for receiving the flue collector dome. said plate functioning to prevent recirculation of exhaust gases into said plenum chamber.
  • air velocity spoiling means further comprises additional air velocity spoiling means positioned in the mouth of said inlet means and between the inlet means and said plenum chamber.
  • the additional air velocity spoiling means includes a plurality of blades longitudinally spaced within the inlet means, each of the blades being positioned adjacent the mouth of the inlet means and extending inwardly therefrom.
  • a stackless heating appliance adapted for outdoor installation comprising:
  • a plurality of vertically oriented wall portions housing a combustion chamber
  • burner means extending into the combustion chamber for combusting an air-gas mixture
  • heat transfer means located above and communicating with the combustion chamber for receiving the heat energy generated thereby;
  • a plenum chamber located within the external wall means communicating with burner means; inlet means provided on an upper extremity of one said wall portions for channeling air into said plenum chamber;
  • exhaust means including an exhaust port communicating at one end with the combustion chamber for discharging the flue products of combustion, and terminating at the other end adjacent the inlet means in the same pressure zone;
  • air velocity spoiling means forming a portion of the inlet means and extending above the exhaust port for increasing the static air pressure at both the inlet means and the exhaust port to stabilize combustion conditions at said burner means.
  • the exhaust means includes a flue collector assembly comprising a dome positioned over the combustion chamber with the top of the said dome beinlg a ertured to form an exhaust port.
  • he invention of claim 10 including a plate extending transversely across the top of the appliance to form the top wall portion of the plenum chamber, said plate further including an aperture formed thereon for receiving the flue collector dome. said plate functioning to prevent a recirculation of exhaust gases into said plenum chamber.
  • air velocity spoiling means further comprises additional air velocity spoiling means positioned in the mouth of said inlet means and between the inlet means and saidplenum chamber.
  • the additional air velocity spoiling means includes a plurality of blades longitudinally spaced within the inlet means, each of the blades being positioned adjacent the mouth of the inlet means and extending inwardly therefrom.

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  • 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)
US792463*A 1969-01-21 1969-01-21 Outdoor gas-burning appliance Expired - Lifetime US3537431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79246369A 1969-01-21 1969-01-21

Publications (1)

Publication Number Publication Date
US3537431A true US3537431A (en) 1970-11-03

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ID=25156962

Family Applications (1)

Application Number Title Priority Date Filing Date
US792463*A Expired - Lifetime US3537431A (en) 1969-01-21 1969-01-21 Outdoor gas-burning appliance

Country Status (6)

Country Link
US (1) US3537431A (enrdf_load_stackoverflow)
CH (1) CH515460A (enrdf_load_stackoverflow)
DE (1) DE1965812A1 (enrdf_load_stackoverflow)
FR (1) FR2028807A1 (enrdf_load_stackoverflow)
GB (1) GB1257540A (enrdf_load_stackoverflow)
NL (1) NL146281B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797477A (en) * 1972-01-10 1974-03-19 Teledyne Inc Convertible gas heating apparatus
US20050175950A1 (en) * 2004-02-11 2005-08-11 Michael Waters Heating apparatus
CN110332696A (zh) * 2019-07-30 2019-10-15 中山百得厨卫有限公司 户外燃气热水器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227392C2 (de) * 1972-06-06 1983-01-13 Motan Gmbh, 7972 Isny Durchlauferhitzer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797477A (en) * 1972-01-10 1974-03-19 Teledyne Inc Convertible gas heating apparatus
US20050175950A1 (en) * 2004-02-11 2005-08-11 Michael Waters Heating apparatus
US7086396B2 (en) 2004-02-11 2006-08-08 Michael Waters Heating apparatus
CN110332696A (zh) * 2019-07-30 2019-10-15 中山百得厨卫有限公司 户外燃气热水器
CN110332696B (zh) * 2019-07-30 2024-02-09 中山百得厨卫有限公司 户外燃气热水器

Also Published As

Publication number Publication date
NL7000798A (enrdf_load_stackoverflow) 1970-07-23
NL146281B (nl) 1975-06-16
GB1257540A (enrdf_load_stackoverflow) 1971-12-22
DE1965812A1 (de) 1970-08-06
CH515460A (de) 1971-11-15
FR2028807A1 (enrdf_load_stackoverflow) 1970-10-16

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Date Code Title Description
AS Assignment

Owner name: TELEDYNE INDUSTRIES, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TELEDYNE, INC., A CORP. OF DE;REEL/FRAME:004053/0314

Effective date: 19711027

Owner name: TELEDYNE INDUSTRIES, INC., A CA CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TELEDYNE, INC., A CORP. OF DE;REEL/FRAME:004053/0314

Effective date: 19711027