EP0011568A1 - Verbesserung von luftdichten Haushaltsgasapparaten mit erzwungenem Zug - Google Patents

Verbesserung von luftdichten Haushaltsgasapparaten mit erzwungenem Zug Download PDF

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Publication number
EP0011568A1
EP0011568A1 EP79400862A EP79400862A EP0011568A1 EP 0011568 A1 EP0011568 A1 EP 0011568A1 EP 79400862 A EP79400862 A EP 79400862A EP 79400862 A EP79400862 A EP 79400862A EP 0011568 A1 EP0011568 A1 EP 0011568A1
Authority
EP
European Patent Office
Prior art keywords
valve
enclosure
exhaust
appliance
burner
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.)
Granted
Application number
EP79400862A
Other languages
English (en)
French (fr)
Other versions
EP0011568B1 (de
Inventor
Jean-Claude Charron
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.)
Saunier Duval SA
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval SA
Saunier Duval Eau Chaude Chauffage SDECC SA
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 Saunier Duval SA, Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval SA
Publication of EP0011568A1 publication Critical patent/EP0011568A1/de
Application granted granted Critical
Publication of EP0011568B1 publication Critical patent/EP0011568B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/04—Regulating fuel supply conjointly with air supply and with draught
    • F23N1/045—Regulating fuel supply conjointly with air supply and with draught using electrical or electromechanical means
    • 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
    • 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
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/20—Membrane valves
    • 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
    • F23N2235/24—Valve details

Definitions

  • the invention relates to gas tight devices with forced draft. We know that when studying and developing this type of device, we generally encounter difficulties in finding ways to ensure the renewal of the air necessary for the combustion of the pilot light. during periods of non-operation of the burner and the exhaust fan.
  • This pre-sweep consists in operating the exhaust fan to evacuate any accumulations of gas or combustion products; according to the standards, it must last a certain time which depends on the volume of the combustion circuit. It is not inconvenient for the user if he only intervenes when lighting the pilot of a device of the permanent pilot type; on the other hand it is unacceptable if it is a question of lighting the burner of an appliance of the type of instantaneous production of hot water because it would excessively lengthen the time which would elapse between the opening of a hot water tap and obtaining this water at a usable temperature and in any event this time would greatly exceed that of maximum imposed by standards.
  • the invention provides an effective solution to this problem since it precisely makes it possible to avoid this pre-sweep operation, by the fact that in a period of non-ignition of the burner, the sealed enclosure is directly open to outside air, that is to say that the device is no longer waterproof and is therefore not subject to the requirements of pre-sweeping while, upon ignition of the burner, the sealing of said enclosure is restored.
  • the sealed enclosure is provided with an air inlet orifice which can be closed by a valve normally open when the device is not operating, but which closes automatically as soon as the device operates to replace this under normal operating conditions of a waterproof device.
  • the closing movement of the valve is slaved to the lifting movement of the differential diaphragm controlling the admission of gas to the burner, by closing a contact for energizing d 'an electromagnetic mechanism for operating said valve.
  • the servo-control of the exhaust fan when the burner is started is effected by means of said valve closing mechanism.
  • the combustion chamber 1 disposed above the burner rails and containing the heating body 6 is capped by a hood 3 connected to the outside by a pipe 4 for discharging the burnt gases extracted from the appliance by the fan 5
  • the combustion chamber 1 slightly overflows the burners 2, so that all the hot gases reach the heating element.
  • the combustion chamber-burner assembly is surrounded by a sealed enclosure 7 connected to the outside by the fresh air supply duct 8 coaxial with the exhaust tube 4.
  • the exhaust fan 5 operates the air fresh air admitted inside the sealed enclosure promotes combustion with the burner and establishes a circulation of combustion products from bottom to top inside chamber 1 as indicated by the arrows.
  • the admission of gas to the burner 2, lit by the pilot 18, is controlled by a valve 9 whose movement is controlled by that of the chamber 11 of a conventional mechanism 10 reacting to the drawing of water.
  • the sealed enclosure 7 is provided at its base with an air inlet orifice 15 which can be closed by a pivoting valve 16 recalled by a spring 19.
  • a rod 12 integral with the movement of this membrane 11 acts on a switch 13 for energizing an electromagnet 14 whose movable core operates the pivoting valve 16.
  • a contactor 17 reacts to the tilting movement of said valve in the direction of activation on the exhaust fan 5.
  • valve 16 When the device does not work, under the effect of the spring 19, the valve 16 is held in the open position as shown by the dotted line representation in the drawing. Fresh air arrives in the sealed enclosure and a natural convection is established which is sufficient for the pilot light supply.
  • the device works like a waterproof device; the drawing represents it in the operating position.
  • the valve 16 reopens under the effect of the spring 19.
  • This opening movement which causes the contact 17 to switch off causes the fan with a very slight delay (due to its inertia) compared to the opening of the valve 16.
  • the invention is not limited to the embodiment described above, but encompasses all variants thereof, in particular in the arrangement of the orifice, the shutter valve and the electrical contacts.

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)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)
EP79400862A 1978-11-15 1979-11-14 Verbesserung von luftdichten Haushaltsgasapparaten mit erzwungenem Zug Expired EP0011568B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7832251A FR2441799A1 (fr) 1978-11-15 1978-11-15 Perfectionnement aux appareils d'utilisation domestique du gaz du type etanche a tirage force
FR7832251 1978-11-15

Publications (2)

Publication Number Publication Date
EP0011568A1 true EP0011568A1 (de) 1980-05-28
EP0011568B1 EP0011568B1 (de) 1982-06-30

Family

ID=9214921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400862A Expired EP0011568B1 (de) 1978-11-15 1979-11-14 Verbesserung von luftdichten Haushaltsgasapparaten mit erzwungenem Zug

Country Status (3)

Country Link
EP (1) EP0011568B1 (de)
DE (1) DE2963271D1 (de)
FR (1) FR2441799A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655410A1 (fr) * 1989-12-04 1991-06-07 Sdecc Chaudiere etanche a gaz a tirage force utilisant un thermocontact anti-condensation.
CN106568201A (zh) * 2016-07-30 2017-04-19 广东万和新电气股份有限公司 防冻热水器、控制终端及防冻***

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221710C (de) *
FR833553A (fr) * 1937-06-18 1938-10-25 Chalot Ets Producteur d'eau chaude par le gaz en circuit étanche équilibre
US2815768A (en) * 1956-01-09 1957-12-10 Roberts Appliance Corp Gordon Control means for gaseous fuel burners
FR2358618A1 (fr) * 1976-07-15 1978-02-10 Leblanc Sa E L M Procede et dispositif de regulation du debit d'air d'une chaudiere etanche, chauffee au gaz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221710C (de) *
FR833553A (fr) * 1937-06-18 1938-10-25 Chalot Ets Producteur d'eau chaude par le gaz en circuit étanche équilibre
US2815768A (en) * 1956-01-09 1957-12-10 Roberts Appliance Corp Gordon Control means for gaseous fuel burners
FR2358618A1 (fr) * 1976-07-15 1978-02-10 Leblanc Sa E L M Procede et dispositif de regulation du debit d'air d'une chaudiere etanche, chauffee au gaz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655410A1 (fr) * 1989-12-04 1991-06-07 Sdecc Chaudiere etanche a gaz a tirage force utilisant un thermocontact anti-condensation.
EP0432020A1 (de) * 1989-12-04 1991-06-12 Saunier Duval Eau Chaude Chauffage - Sdecc Gasdichter Kessel mit Zwangsabzug unter Verwendung eines Thermokontakts
CN106568201A (zh) * 2016-07-30 2017-04-19 广东万和新电气股份有限公司 防冻热水器、控制终端及防冻***

Also Published As

Publication number Publication date
FR2441799A1 (fr) 1980-06-13
FR2441799B1 (de) 1981-05-08
EP0011568B1 (de) 1982-06-30
DE2963271D1 (en) 1982-08-19

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