US3866594A - Gas fired heating installation - Google Patents

Gas fired heating installation Download PDF

Info

Publication number
US3866594A
US3866594A US440061A US44006174A US3866594A US 3866594 A US3866594 A US 3866594A US 440061 A US440061 A US 440061A US 44006174 A US44006174 A US 44006174A US 3866594 A US3866594 A US 3866594A
Authority
US
United States
Prior art keywords
gas
heater assembly
branch conduit
heater
flue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US440061A
Other languages
English (en)
Inventor
Alphons Diermayer
Luitpold Kutzner
Erwin Postenrieder
Werner Diermayer
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.)
Kutzner and Weber GmbH
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
Priority claimed from DE19732309540 external-priority patent/DE2309540C3/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3866594A publication Critical patent/US3866594A/en
Assigned to KUTZNER + WEBER GMBH reassignment KUTZNER + WEBER GMBH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KUTZNER, LUITPOLD
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
    • F24C15/00—Details
    • F24C15/001—Details arrangements for discharging combustion gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/04—Regulating air supply or draught by operation of single valves or dampers by temperature sensitive elements
    • F23N3/047—Regulating air supply or draught by operation of single valves or dampers by temperature sensitive elements using mechanical means

Definitions

  • ABSTRACT A gas fired heating installation in which several gas heater assemblies communicate with a common flue on different levels for drawing air of combustion from the flue and discharging combustion gases into the flue is equipped with a thermostatically controlled throttling valve in the intake duct of each heater assembly.
  • the throttle valve increases the flow section of the intake duct so that the gas, partly stripped of its oxygen by the lower heater, enters the higher heater in greater volume to provide an amount of oxygen approximately independent of the number of operating heaters.
  • This invention relates to gas fired heating installations, and particularly to an installation in which a plurality of gas fired heaters are connected to a common flue on different levels to receive air of combustion from the flue and to discharge their combustion gases into the flue.
  • the several heater assemblies when simultaneously operated, receive from the flue a mixture of air and of combustion products whose oxygen content varies with the number of lower, simultaneously operating heaters.
  • the efficiency of gas heaters depends on an adequate amount of oxygen being supplied for full combustion of the gaseous fuel while avoiding an excess of non-flammable material which merelycarries heat into the flue.
  • Conventional, gas fired heating installations of the type described are necessarily designed for most economical fuel use when a fixed number of heaters is in operation while wasting fuel and/or supplying less than an optimum amount of thermal energy under all other conditions.
  • the invention provides the intake of each heater assembly with a flow control device for controlling the flow of gas from the flue to the burner and responsive to operation of a heater on a lower level for increasing the flow section of the intake, and responsive to interruption of operation of the lower heater for reducing the flow section of the intake.
  • the invention provides a method of controlling the operation of a gas heater in which a gaseous fuel and an oxygen-bearing gas are fed to the heater, the temperature of the gas is sensed, and the rate of flow of the oxygen-bearing gas is controlled in response to the sensed temperature.
  • FIG. 1 shows a heating installation of the invention in fragmentary elevation, portions being broken away to reveal internal structure
  • FIG. 2 shows an element of the device of FIG. 1 in section on the line II II on a larger scale.
  • FIG. 1 there is shown only as much of a heating installation according to the invention as is needed for its understanding.
  • a flue passes vertically upward through the several floors of a building in which it is desired to heat each floor individually, natural gas being the preferred fuel.
  • An opening 11 at the bottom of the flue 10 admits air of combustion for the individual heater assemblies on respective upper floors, only two identical heater assemblies being shown.
  • Each heater assembly includes a branch conduit 12 which is approximately U-shaped in a vertical plane.
  • the enlarged central portion 16 of the conduit 12 receives gaseous fuel from a supply line 13 which leads to a gas burner 14 in the conduit portion 16.
  • Water tubes 15 arranged above the burner 14 receive much of the thermal energy of the burning gas and supply hot water to all radiators on a floor in a conventional manner, not shown.
  • Each heater assembly is sealed from the open space of the floor on which it is located. Aside from unintentional leaks, the sole source of air of combustion for each heater assembly is the intake orifice 17 of the associated branch conduit 12 in the flue 10. Because of the thermal siphon effect of the gas burning at the nozzle of the burner 14, gas is drawn from the flue through the orifice 17, stripped of at least a portion of its oxygen, and discharged at a higher temperature from the discharge orifice 18 of the conduit 12 which is upwardly spaced from the orifice 17.
  • a throttling valve 20 is arranged in each branch conduit 12 between the intake orifice l7 and the burner- 14.
  • the valve is similar to the automatic flue damper disclosed and claimed by two of us in US. Pat. No. 3,510,059 in that it has an axially short, cylindrical frame 19 which fits tightly into the conduit 12 and two quadrants 21 of bi-metallic sheet material which, in the illustrated condition of the valve, practically completely block one half of the flow section of the frame 19 and of the conduit 12.
  • the other half 22 is permanently open to provide the proper amount of air of combustion when the flue 10 carries pure air, that is, no lower heater is operating.
  • the quadrants 21 are provided with spacedly parallel slots 23 which divide each quadrant into individually bendable tongs.
  • the gas reaching a higher heater is a mixture of air and of combustion gases, its oxygen content is lower, and its temperature is higher than that of ambient air. Because of thermal expansion, the oxygen content of each unit volume of the gas reaching the higher burner is further reduced. While much of the gas flows through the opening 22, enough flows around the quadrants 21 and through the slots 23 to raise the temperature of the birnetal and to flex the tongs out of their illustrated position so that they open additional flow paths for the gases in the conduit 12, thereby increasing the oxygen supply to the associated burner 14 in response to the operation of a lower burner to approach an optimal supply.
  • the bi-metal quadrants 21 are readily selected for proper response to hold the flow section of the associated branch conduit in a desirable range as the number of operating lower burners and the temperature of the gas supplied varies. Obviously, no bi-metal valve is needed in the lowermost heater assembly, not illustrated, and the response characteristics of valves in the higher heater assemblies must be varied in accordance with the number of lower heater assemblies that may be operated simultaneously. There is enough gas turbulence about the tongs of the quadrants quickly to close the throttle valve to the illustrated position in response to the interruption of operation of a lower heater assembly and thereby to decrease the flow section of the branch conduit 12.
  • the valve When the gas temperature is not sensed by the operating elements of the valve itself, the valve may be located anywhere in the branch conduit 12 if so desired, and the sensing element may be located in the branch conduit ahead of the burner 14 or even in the flue although better correlation with the oxygen content of the supplied air is achieved when the temperature is sensed in the conduit 12 between the orifice l7 and the burner 14.
  • a gas-fired heating installation comprising, in combination:
  • a first heater assembly and a second heater assem- C. means for supplying air of combustion and a gaseous fuel to said first assembly, said first assembly communicating with a first portion of said exhaust flue for discharge of gases of combustion formed in said heater assembly by combustion of said gaseous fuel into said first portion,
  • said second heater assembly including i. a branch conduit having an intake orifice and an exhaust orifice in a second portion of said flue upwardly spaced from said first portion, ii. a burner in said conduit intermediate said oriiii. supply means for supplying gaseous fuel to said burner, and
  • flow control means in said conduit for controlling the flow of gas from said intake orifice to said burner
  • said flow control means including means responsive to operation of said first heater assembly for increasing the flow section of said branch conduit, and responsive to the interruption of operation of said first heater assembly for reducing the flow section of said branch conduit.
  • said flow control means include a throttling valve movable toward and away from a position in which said valve partially obstructs said branch conduit.
  • said flow control means include a bi-metallic element in said branch conduit between said intake orifice and said burner in contact with gas flowing in said branch

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Flow Control (AREA)
  • Air Supply (AREA)
  • Incineration Of Waste (AREA)
  • Control Of Temperature (AREA)
  • Gas Burners (AREA)
  • Control Of Combustion (AREA)
US440061A 1973-02-26 1974-02-05 Gas fired heating installation Expired - Lifetime US3866594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732309540 DE2309540C3 (de) 1973-02-26 Gasfeuerungsanlage mit einer Vielzahl von Gasfeuerstätten

Publications (1)

Publication Number Publication Date
US3866594A true US3866594A (en) 1975-02-18

Family

ID=5873134

Family Applications (1)

Application Number Title Priority Date Filing Date
US440061A Expired - Lifetime US3866594A (en) 1973-02-26 1974-02-05 Gas fired heating installation

Country Status (5)

Country Link
US (1) US3866594A (enrdf_load_stackoverflow)
JP (1) JPS49118047A (enrdf_load_stackoverflow)
FR (1) FR2219388B3 (enrdf_load_stackoverflow)
GB (1) GB1431515A (enrdf_load_stackoverflow)
NL (1) NL7401954A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512098C2 (de) * 1975-03-19 1987-08-20 Werner Lafayette Calif. Diermayer Bimetallgesteuerte Drosseleinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228605A (en) * 1964-03-23 1966-01-11 Diermayer Alphons Automatic flue damper
US3307613A (en) * 1965-09-03 1967-03-07 Honeywell Inc Control apparatus
US3510059A (en) * 1967-04-26 1970-05-05 Diermayer Werner Automatic flue damper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228605A (en) * 1964-03-23 1966-01-11 Diermayer Alphons Automatic flue damper
US3307613A (en) * 1965-09-03 1967-03-07 Honeywell Inc Control apparatus
US3510059A (en) * 1967-04-26 1970-05-05 Diermayer Werner Automatic flue damper

Also Published As

Publication number Publication date
NL7401954A (enrdf_load_stackoverflow) 1974-08-28
FR2219388A1 (enrdf_load_stackoverflow) 1974-09-20
FR2219388B3 (enrdf_load_stackoverflow) 1976-12-10
GB1431515A (en) 1976-04-07
JPS49118047A (enrdf_load_stackoverflow) 1974-11-12
DE2309540B2 (de) 1976-04-15
DE2309540A1 (de) 1974-09-19

Similar Documents

Publication Publication Date Title
CA2002488C (en) Forced draft direct vent system for a water heater
US4533315A (en) Integrated control system for induced draft combustion
US4766883A (en) Forced draft controlled mixture heating system using a closed combustion chamber
US4221557A (en) Apparatus for detecting the occurrence of inadequate levels of combustion air at a flame
US6145502A (en) Dual mode of operation fireplaces for operation in vented or unvented mode
US4678116A (en) Water heater
US4779795A (en) Convector room heater incorporating a hot water boiler
US6311687B1 (en) Heating furnace, especially with gas and/or oil firing
GB2060946A (en) Domestic heating system
CA2359395A1 (en) Fuel-fired heating appliance with combustion chamber temperature-sensing combustion air shutoff system
US6854428B1 (en) Water heater with normally closed air inlet damper
US4171771A (en) Central heating systems
CA2229129C (en) A differential pressure modulated gas valve for single stage combustion control
US3866594A (en) Gas fired heating installation
US4122999A (en) Forced air heating system
US2328538A (en) Humidifier
US2525400A (en) Air heater with solid fuel and fluid fuel burning furnaces arranged in tandem
KR930006168B1 (ko) 연소기의 제어장치
US4503810A (en) Water heater
EP0400757B1 (en) Gas-fired heating apparatus
US1758828A (en) Combined burner and regulator unit
US2075986A (en) Gaseous fuel consuming heating apparatus
US6217320B1 (en) Space heating appliances
US6481434B2 (en) Gas fired infrared radiant tube heating system using plural burner assemblies and single gas delivery system
US4480629A (en) Gas furnace system

Legal Events

Date Code Title Description
AS Assignment

Owner name: KUTZNER + WEBER GMBH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KUTZNER, LUITPOLD;REEL/FRAME:005779/0553

Effective date: 19910429