GB1507995A - Gas-fired instantaneous water heaters for domestic supply and central heating - Google Patents

Gas-fired instantaneous water heaters for domestic supply and central heating

Info

Publication number
GB1507995A
GB1507995A GB24820/75A GB2482075A GB1507995A GB 1507995 A GB1507995 A GB 1507995A GB 24820/75 A GB24820/75 A GB 24820/75A GB 2482075 A GB2482075 A GB 2482075A GB 1507995 A GB1507995 A GB 1507995A
Authority
GB
United Kingdom
Prior art keywords
valve
water
central heating
gas
fan
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
GB24820/75A
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.)
British Gas Corp
Original Assignee
British Gas Corp
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 British Gas Corp filed Critical British Gas Corp
Priority to GB24820/75A priority Critical patent/GB1507995A/en
Publication of GB1507995A publication Critical patent/GB1507995A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/10—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught
    • F23N1/105—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/128—Preventing overheating
    • F24H15/132—Preventing the operation of water heaters with low water levels, e.g. dry-firing
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/136—Defrosting or de-icing; Preventing freezing
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/184—Preventing harm to users from exposure to heated water, e.g. scalding
    • 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
    • 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
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after 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
    • F24H15/254—Room temperature
    • 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
    • F24H15/305—Control of valves
    • F24H15/315—Control of valves of mixing 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
    • 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
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/486—Control of fluid heaters characterised by the type of controllers using timers
    • 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
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • 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
    • F23N2227/00—Ignition or checking
    • F23N2227/04—Prepurge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • 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
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

1507995 Gas fired water heaters for domestic supply and central heating BRITISH GAS CORP 25 June 1976 [10 June 1975] 24820/75 Heading F4A A water heater comprises a heat exchanger 23 through which pass a pipe 3 for the instantaneous heating of domestic water and a branch of a central heating circuit, a gas fired burner 2 which receives gas via line 1 and at least one fluid controlled gas valve, a variable speed burner fan 13, a pump 10 for the central heating circuit, a fluid controlled valve 8 which can divert central heating water to by-pass space heaters 26, thermostats to measure the domestic and space heating water temperatures, and a flame sensing device. As shown there are two gas valves 12, 16 in series and they are controlled in response to central heating water pressure differentials measured across the pump 10 and heat exchanger 23 respectively. The valve 8 operates in response to domestic water pressure differential across the heat exchanger to by-pass space heaters 26 when domestic water is turned on. The heater is controlled by control box 11 and central heating demand is met only after domestic water demand has been satisfied. When a domestic tap is opened the water temperature, detected by thermostat 14, is reduced if necessary to below 60‹ C. by the operation of a mixer valve 4 . The flow of water operates the valve 8 and a switch associated with this valve turns on the burner ignition circuit and the pump 10. Water pressure across the pump opens gas valve 12 and the fan is turned on. When the fan has blown air through the burner for a predetermined short period a solenoid valve 15 closes allowing gas valve 16 to be opened by water pressure across the heat exchanger. The burner is ignited and the fan speed is adjusted to approach the preset water temperature of 60‹ C. and the fan is turned off and solenoid valve 15 opened when this temperature is reached. When no flame is sensed the fan is turned off, the solenoid valve 15 opens, and the pump is turned off and the heater must be reset manually. A high temperature detected at 22 effects a similar shut-down. Time clock X and room thermostat 25 initiate central heating demand and the demand causes the pump to be turned on. Thereafter the system functions as described above with the fan speed set to minimum and the fan turned off and solenoid valve 15 opened when a central heating water temperature of about 82‹ C. is reached. The valves are all operated by the application of differential water pressure to a diaphragm and in the embodiment shown valves 12, 16 are in the form of two diaphragm operated valve members in the same valve casing (Figs. 2, 3, not shown).
GB24820/75A 1976-06-25 1976-06-25 Gas-fired instantaneous water heaters for domestic supply and central heating Expired GB1507995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB24820/75A GB1507995A (en) 1976-06-25 1976-06-25 Gas-fired instantaneous water heaters for domestic supply and central heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24820/75A GB1507995A (en) 1976-06-25 1976-06-25 Gas-fired instantaneous water heaters for domestic supply and central heating

Publications (1)

Publication Number Publication Date
GB1507995A true GB1507995A (en) 1978-04-19

Family

ID=10217746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24820/75A Expired GB1507995A (en) 1976-06-25 1976-06-25 Gas-fired instantaneous water heaters for domestic supply and central heating

Country Status (1)

Country Link
GB (1) GB1507995A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481425A1 (en) * 1980-04-24 1981-10-30 Dietrich De Automatic control for boiler and heating system - includes microprocessor with multiplexed inputs for thermostats and control signals
FR2529311A1 (en) * 1982-06-24 1983-12-30 Lin Long Fung Through-flow gas water heater - has main valve and electromagnet inlet and outlet valves operated in fail-safe sequence
GB2160627A (en) * 1984-06-20 1985-12-24 Aquaflow Showers Ltd Apparatus for supplying instantaneous hot water for washing purposes
GB2215824A (en) * 1988-02-10 1989-09-27 Cannon Ind Ltd Water heaters
GB2388887A (en) * 2002-05-23 2003-11-26 4C Group Ltd Hydraulic diverter valve
GB2388888A (en) * 2002-05-23 2003-11-26 4C Group Ltd Hydraulic diverter valve
GB2388889A (en) * 2002-05-23 2003-11-26 4C Group Ltd A hydraulic diverter valve
WO2013130299A3 (en) * 2012-02-29 2014-01-23 Premark Feg L.L.C. Gas burner system for gas-powered cooking devices
CN104990268A (en) * 2015-07-14 2015-10-21 佛山市顺德万和电气配件有限公司 Blockage protection method for feed pipe and exhaust pipe of fully-premixed gas heating water heater

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481425A1 (en) * 1980-04-24 1981-10-30 Dietrich De Automatic control for boiler and heating system - includes microprocessor with multiplexed inputs for thermostats and control signals
FR2529311A1 (en) * 1982-06-24 1983-12-30 Lin Long Fung Through-flow gas water heater - has main valve and electromagnet inlet and outlet valves operated in fail-safe sequence
GB2160627A (en) * 1984-06-20 1985-12-24 Aquaflow Showers Ltd Apparatus for supplying instantaneous hot water for washing purposes
GB2215824A (en) * 1988-02-10 1989-09-27 Cannon Ind Ltd Water heaters
GB2388887A (en) * 2002-05-23 2003-11-26 4C Group Ltd Hydraulic diverter valve
GB2388888A (en) * 2002-05-23 2003-11-26 4C Group Ltd Hydraulic diverter valve
GB2388889A (en) * 2002-05-23 2003-11-26 4C Group Ltd A hydraulic diverter valve
GB2388888B (en) * 2002-05-23 2005-11-02 4C Group Ltd Adjustable diaphragm housing for an hydraulic diverter valve
GB2388887B (en) * 2002-05-23 2005-11-02 4C Group Ltd Diaphragm housing outlet connector for an hydraulic diverter valve
WO2013130299A3 (en) * 2012-02-29 2014-01-23 Premark Feg L.L.C. Gas burner system for gas-powered cooking devices
CN104990268A (en) * 2015-07-14 2015-10-21 佛山市顺德万和电气配件有限公司 Blockage protection method for feed pipe and exhaust pipe of fully-premixed gas heating water heater
CN104990268B (en) * 2015-07-14 2017-10-31 广东万和热能科技有限公司 Fully pre-mixing gas combustion water heater for heating blocks guard method to blast pipe

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee