GB1235891A - Improvements in or relating to gas heaters - Google Patents

Improvements in or relating to gas heaters

Info

Publication number
GB1235891A
GB1235891A GB49355/68A GB4935568A GB1235891A GB 1235891 A GB1235891 A GB 1235891A GB 49355/68 A GB49355/68 A GB 49355/68A GB 4935568 A GB4935568 A GB 4935568A GB 1235891 A GB1235891 A GB 1235891A
Authority
GB
United Kingdom
Prior art keywords
gas
pressure
burner
air
duct
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
Application number
GB49355/68A
Inventor
Philip Arthur Wilkins
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.)
Wilkins and Mitchell Ltd
Original Assignee
Wilkins and Mitchell Ltd
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 Wilkins and Mitchell Ltd filed Critical Wilkins and Mitchell Ltd
Priority to GB49355/68A priority Critical patent/GB1235891A/en
Publication of GB1235891A publication Critical patent/GB1235891A/en
Expired 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
    • F24H9/2085—Arrangement or mounting of control or safety devices for air heaters using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/204—Temperature of the air before heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/345—Control of fans, e.g. on-off control
    • F24H15/35—Control of the speed of fans
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/20—Measuring temperature entrant temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/10—Ventilators forcing air through heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/02—Space-heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

1,235,891. Burner controls; unit air heaters; air heaters; controlling air supply for combustion. WILKINS & MITCHELL Ltd. 30 June, 1969 [30 March, 1968; 17 Oct., 1968], Nos. 15447/68 and 49355/68. Headings F4S, F4T, F4V and F4W. A heater comprises a gas burner 15, a fan 21 to pump combustion air to the burner 15 through a duct 18 and means sensitive to the pressure of gas in a gas supply pipe 32 upstream of the burner 15 to control the fan 21 and/or the cross-sectional area of the duct 18 to vary the supply of combustion air delivered to the burner 15 along the duct 18 in dependence upon the pressure of gas so as substantially to match in use the quantity of air delivered to the requirements of the quantity of gas being burnt. As shown in Fig. 1, the pressure sensitive control means includes a diaphragm unit 26 which comprises a diaphragm 28 acted upon on one side by an adjustable spring 29 in a housing 27 and on the other side by the pressure of gas in the supply pipe 32 to which the housing 27 is connected by a pipe 31; as the pressure changes the diaphragm 28 moves thereby moving a rod 24 which abuts a pivotally mounted flap 23 in the duct 18 to thereby charge the cross-sectional area thereof. The burner 15 is contained in a heat exchanger 14 and air passes through the heat exchanger 14 via a passage 11, containing a fan 16 and having an inlet 12 and an outlet 13. Adjacent the inlet 12 is situated a temperature sensing element 34 which senses the temperature of the incoming air and in respect thereof alters the setting of temperature-sensitive control valve 33 in the gas pipe 32 upstream of the pressure-sensitive control means to reduce the gas supply as the temperature of the incoming air rises. The fans 16 and 21 are driven by an electric motor 17 and a further control valve 35 is provided in the gas supply pipe 32 to coarsely adjust the gas flow in respect of the speed of the motor 17 using one of two alternative positions. In the embodiment of Fig. 2 (not shown) a fan (38) supplying combustion air is driven by an electric motor (39) whose speed is varied by means of an eddy current brake (41): a magnet (42) of the brake (41) is pivotally mounted and is operated by a rod (43) of a diaphragm unit (44). In the embodiment of Fig. 3 (not shown) a first diaphragm unit (57) senses the gas pressure in a gas supply pipe (48) immediately upstream of a burner (46) and a second diaphragm unit (59) senses the pressure of the combustion air in a duct (47) downstream of a movable flap (51) in the duct (47) which flap is movable by a rod (53) connected to a pivoted beam (55) connected to the diaphragm units (57, 59).
GB49355/68A 1968-03-30 1968-03-30 Improvements in or relating to gas heaters Expired GB1235891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB49355/68A GB1235891A (en) 1968-03-30 1968-03-30 Improvements in or relating to gas heaters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49355/68A GB1235891A (en) 1968-03-30 1968-03-30 Improvements in or relating to gas heaters

Publications (1)

Publication Number Publication Date
GB1235891A true GB1235891A (en) 1971-06-16

Family

ID=26251300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49355/68A Expired GB1235891A (en) 1968-03-30 1968-03-30 Improvements in or relating to gas heaters

Country Status (1)

Country Link
GB (1) GB1235891A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356880A1 (en) * 1976-07-02 1978-01-27 Vaillant Sa DEVICE FOR REGULATING THE AIR SUPPLY OF A CLOSED FIREPLACE
EP0085925A2 (en) * 1982-02-09 1983-08-17 Charles Richard Gerlach Burner with variable air controller
US4613303A (en) * 1983-06-23 1986-09-23 Combustion Engineering, Inc. Combustion air control in an in-line flame arrestor
CN102538214A (en) * 2012-01-19 2012-07-04 中山华帝燃具股份有限公司 Smoke discharge blockage control method and system for gas water heater
CN105987515A (en) * 2015-02-06 2016-10-05 保音股份有限公司 Adjustment mechanism of exhaust air volume of water heater
GB2580658A (en) * 2019-01-21 2020-07-29 Canetis Metering Ltd A method and system for controlling gas flow rate in a boiler
CN113217945A (en) * 2021-05-31 2021-08-06 江苏盛剑环境设备有限公司 Combustion control device, combustion control method, and combustion system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356880A1 (en) * 1976-07-02 1978-01-27 Vaillant Sa DEVICE FOR REGULATING THE AIR SUPPLY OF A CLOSED FIREPLACE
EP0085925A2 (en) * 1982-02-09 1983-08-17 Charles Richard Gerlach Burner with variable air controller
EP0085925A3 (en) * 1982-02-09 1983-10-12 Charles Richard Gerlach Burner with variable air controller
US4613303A (en) * 1983-06-23 1986-09-23 Combustion Engineering, Inc. Combustion air control in an in-line flame arrestor
CN102538214A (en) * 2012-01-19 2012-07-04 中山华帝燃具股份有限公司 Smoke discharge blockage control method and system for gas water heater
CN105987515A (en) * 2015-02-06 2016-10-05 保音股份有限公司 Adjustment mechanism of exhaust air volume of water heater
CN105987515B (en) * 2015-02-06 2019-04-26 保音股份有限公司 The Regulation mechanism of water heater exhaust air rate
GB2580658A (en) * 2019-01-21 2020-07-29 Canetis Metering Ltd A method and system for controlling gas flow rate in a boiler
CN113217945A (en) * 2021-05-31 2021-08-06 江苏盛剑环境设备有限公司 Combustion control device, combustion control method, and combustion system

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