EP1039223B1 - Antivibration control device for the flow regulator damper of combustion air in a burner - Google Patents

Antivibration control device for the flow regulator damper of combustion air in a burner Download PDF

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Publication number
EP1039223B1
EP1039223B1 EP00105382A EP00105382A EP1039223B1 EP 1039223 B1 EP1039223 B1 EP 1039223B1 EP 00105382 A EP00105382 A EP 00105382A EP 00105382 A EP00105382 A EP 00105382A EP 1039223 B1 EP1039223 B1 EP 1039223B1
Authority
EP
European Patent Office
Prior art keywords
damper
burner
rod
combustion air
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 - Lifetime
Application number
EP00105382A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1039223A1 (en
Inventor
Luciano Bianchini
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.)
Riello SpA
Original Assignee
Riello SpA
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 Riello SpA filed Critical Riello SpA
Publication of EP1039223A1 publication Critical patent/EP1039223A1/en
Application granted granted Critical
Publication of EP1039223B1 publication Critical patent/EP1039223B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L3/00—Arrangements of valves or dampers before the fire
    • 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
    • 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

Definitions

  • the invention concerns an antivibration device for the flow regulator damper of combustion air in a burner.
  • the damper tends to drop and closes the inlet until, when the fan has come to a standstill, the damper completely doses the inlet preventing the fire pot from cooling.
  • the hammering effect can continue for quite a long time or may even never stop.
  • This invention intends to overcome the aforementioned inconveniences.
  • a scope of this invention is to produce a damper device for regulating the flow of combustion air in a burner, where the damper does not undergo flapping or vibrations during the burner's operation and above all on lighting.
  • Another scope the device invention intends to achieve is to obtain a precise control of the damper opening even when it is set near its minimum opening.
  • a device for regulating the combustion air flow supplied by a fan to a burner connected to a boiler comprising:
  • One advantage of the invention is that when the fan supplying combustion air to the burner is in operation, even the coil is energised by electric current and magnetises the damper's control rod, thereby permitting that the damper, once it comes into contact with the tip of the rod, remains attached to it without any possibility of undergoing flapping or vibrations during operation. It is clear that once the burner has stopped, the fan also stops and the coil on the rod is de-energised since the power to the coil follows the behaviour of the power to the fan. As a consequence this interrupts the magnetic attraction in the rod with respect to the damper and so the damper is left to close by gravity.
  • Another advantage of the invention is the possibility of fine adjustment in the position of the stay controlling the damper's opening, this adjustment, as will be described below, being obtained by turning a knob and a threaded shaft that holds the solid box that holds the control rod.
  • the burner has an opening 2 for the passage of combustion air regulated by the damper 3 that is hinged at 4 and can therefore be raised and lowered according to the volume of air that is supplied to burner.
  • the clearance for the combustion air to pass through is controlled by a stay consisting of a rod 5 connected to a solid box 6 which is threaded and screws onto the thread of the horizontal shaft 7.
  • This horizontal shaft is held in a seat made in the burner and has a knob 8 on its end that, when suitably fumed, moves the solid box 6 and thereby the rod 5 in the direction of the arrows, both backwards and forwards.
  • the device invention creates, as mentioned earlier, the possibility of completely eliminating the flapping and vibrations or hammering in the damper 3 due to variations in flow of the combustion air during the actual combustion. This is achieved with the aid of the coil 9, which is electrically powered in conjunction with the electrical powering of the fan and in simple terms, basically only when air passes through the clearance left open by the gate.
  • the gate 3 presses against the tip 51 of the rod 5 but, since the rod 5 is embedded in the coil 9, which has current running through it, said rod, being made of metal, is magnetised by the magnetic field generated by the actual coil so that the tip 51 magnetically attracts the metal gate 3 and keeps it firmly in contact, without vibrations and without flapping, while the fan motor, not illustrated, is operating.
  • the fan motor not illustrated
  • the adjustment knob 8 is connected to a scale 10 that tracks the position of the solid box 6 in order to control the position of the rod 5 and consequently the damper 3 opening.
  • the coil 9 can be connected to any kind of rod controlling the position of the air gate 3, which can even operate by a different method to the description given in the example of execution of the invention.
  • the antivibration and anti-hammering effects can be placed in direct relationship to the existence of the coil on the rod and therefore to its magnetisation, so the method of adjusting the rod's position that regulates the opening of the gate is entirely ineffectual.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Air Supply (AREA)
EP00105382A 1999-03-23 2000-03-21 Antivibration control device for the flow regulator damper of combustion air in a burner Expired - Lifetime EP1039223B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI990055 1999-03-23
IT1999VI000055A IT1308142B1 (it) 1999-03-23 1999-03-23 Dispositivo antivibrazione di comando della serranda di regolazionedella portata di aria comburente in un bruciatore.

Publications (2)

Publication Number Publication Date
EP1039223A1 EP1039223A1 (en) 2000-09-27
EP1039223B1 true EP1039223B1 (en) 2003-05-28

Family

ID=11426981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105382A Expired - Lifetime EP1039223B1 (en) 1999-03-23 2000-03-21 Antivibration control device for the flow regulator damper of combustion air in a burner

Country Status (3)

Country Link
EP (1) EP1039223B1 (it)
DE (1) DE60002937T2 (it)
IT (1) IT1308142B1 (it)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2601166A1 (de) * 1976-01-14 1977-07-28 Heege Bernhard Einrichtung zur verbesserung des gesamtwirkungsgrades von mit oel- oder gasbrennern betriebenen wasserzentralheizungsanlagen
IT7964293V0 (it) * 1979-07-11 1979-07-11 Thermorossi Spa Sportello autochiudente perl'immissione dell'aria comburente sotto il focolare di una caldaia a combustibile solido.
GB2098709B (en) * 1981-05-16 1984-08-22 Thorn Heating Ltd Air flow control device

Also Published As

Publication number Publication date
DE60002937D1 (de) 2003-07-03
ITVI990055A1 (it) 2000-09-23
IT1308142B1 (it) 2001-11-29
DE60002937T2 (de) 2004-05-19
EP1039223A1 (en) 2000-09-27

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