EP0314972A2 - Appareil pour chauffer de l'eau notamment une chaudière de chauffage d'eau chaude - Google Patents

Appareil pour chauffer de l'eau notamment une chaudière de chauffage d'eau chaude Download PDF

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Publication number
EP0314972A2
EP0314972A2 EP88117248A EP88117248A EP0314972A2 EP 0314972 A2 EP0314972 A2 EP 0314972A2 EP 88117248 A EP88117248 A EP 88117248A EP 88117248 A EP88117248 A EP 88117248A EP 0314972 A2 EP0314972 A2 EP 0314972A2
Authority
EP
European Patent Office
Prior art keywords
burner
negative pressure
fan
switched
tube
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
EP88117248A
Other languages
German (de)
English (en)
Other versions
EP0314972A3 (en
EP0314972B1 (fr
Inventor
Richard Vetter
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.)
Individual
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
Application filed by Individual filed Critical Individual
Priority to AT88117248T priority Critical patent/ATE92173T1/de
Publication of EP0314972A2 publication Critical patent/EP0314972A2/fr
Publication of EP0314972A3 publication Critical patent/EP0314972A3/de
Application granted granted Critical
Publication of EP0314972B1 publication Critical patent/EP0314972B1/fr
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
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • 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
    • F24H15/355—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
    • 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
    • F23N2225/04—Measuring pressure

Definitions

  • the invention relates to a device for heating water, in particular a water boiler, with a combustion chamber to which one or more burners, preferably oil or gas burners, are assigned, one or more heat exchangers and a fan for generating a suction draft in the flue gas outlet, the or the burners are only effective at a certain negative pressure in the areas of the boiler exposed to the flue gases.
  • a device for heating water in particular a water boiler, with a combustion chamber to which one or more burners, preferably oil or gas burners, are assigned, one or more heat exchangers and a fan for generating a suction draft in the flue gas outlet, the or the burners are only effective at a certain negative pressure in the areas of the boiler exposed to the flue gases.
  • a vacuum control is carried out by measurement in the area of the induced draft fan or by an operational control of this fan.
  • This design has the disadvantage that the vacuum values set for safety and good burner operation can change without ensuring safe operation of the device. So the fan may have changed its speed. Contamination in the flue gas discharge area may also have occurred. In all these cases, the device is not switched off whether shutdown is advised for the errors mentioned.
  • the invention has for its object to avoid these disadvantages; it should therefore be ensured that better pressure monitoring within the device is guaranteed, incorrect switching operations are excluded and the burner is switched off in good time if the vacuum is insufficient.
  • the element used to determine the negative pressure is arranged in the region of the end face of the device on which the burner or burners are installed.
  • this element if necessary, several elements can also be provided - is expediently arranged such that it is located behind the flame cone formed by the burner, as seen in the effective direction of the burner.
  • the invention is based on the knowledge that an attachment of the elements mentioned in the sense of the invention is largely independent of turbulence in the flames or flue gases. Blockages or adverse soiling are not expected at this point. Measurements or determinations at the aforementioned location are therefore very reliable and accurate.
  • the invention allows special circuits for the induced draft fan; it can be speed-controlled as a function of the negative pressure value or of the pressure deviations, in order to restore the desired negative pressure, for example in the case of insufficient negative pressure, by a higher speed of the fan.
  • the combustion chamber 4 is located in a heat exchanger 6, to which the water is supplied at 7 and withdrawn at 8.
  • the lower part of this heat exchanger is traversed by the flue gases, which also flow through a heat exchanger 9 located at the bottom of the housing.
  • the chamber formed by this heat exchanger 9 is a condensation chamber.
  • the flue gas is fed to a system 10 for neutralizing the condensate.
  • the resulting condensate emerges from this system at 11, while the flue gases exit at the rear, that is to say at the rear wall 2 at the bottom.
  • the combustion or flue gases are fed to the flue gas discharge duct 13 via a suction fan 12.
  • the heat exchanger 9 serves to preheat the combustion air.
  • the air enters the heat exchanger 9 via the inlet 14 so that the preheated air can be fed to the fan of the burner 5. See line 9 '.
  • a box-like device which serves to regulate and control, and which is of any design, preferably of an electrically acting type.
  • the device denoted by 15 is connected via a thin tube 16 to a larger tube 17 which is passed through the front wall 1 in such a way that after unscrewing the cap 18 from the outside, the cone 19 of the flame generated by the burner 5 is removed from the outside by the user can be observed.
  • the pipe 16 opens into the interior of the pipe 17, so that the negative pressure that prevails within the combustion chamber 4 and is generated by the suction fan 12 is established within the pipe 16 and thus also at the measuring point within the device 15 (if necessary. with the participation of the natural draft in the flue gas duct 13).
  • the pipe 16 is provided over the pipe 17 at a point in the combustion chamber 4 that is largely turbulence-neutral, i.e. remains unaffected by a more or less strong flame and therefore also with changing loads and cone sizes of the flame that occur in the process remains essentially unaffected.
  • the degree of contamination is also very low in the area between the free end 20 and the inner surface 21 of the front wall 1, into which the pipe 17 opens.
  • the use of the tube 17 as a measuring element is also very advantageous because it is also part of the inspection hole.
  • the device 15 there is also a delay element which does not switch off the burner 5 immediately but with a time delay of approximately 5 seconds.
  • This delay element also has the advantage that external influences, for example caused by storms on the chimney system, have no immediate effect by switching off the burner 5.
  • This timing element or delay element also has advantages when the burner 5 is switched to a power stage, because larger state changes can also occur quickly.
  • the tube 16 is operatively connected to a sensor or pressure meter in order to switch off the burner 5 when certain pressure changes occur.
  • the accurate, almost neutral determination of the negative pressure possible by measuring the negative pressure at the above-mentioned point also makes it possible to regulate the predetermined negative pressure by changing the speed of the suction fan 12 or to comply exactly with the load conditions.
  • the control line leading from the device 15 to the suction fan 12 is designated by 21.
  • a line 22 also leads from the device 15 to the burner 5 in order to switch it off after the vacuum has fallen below, it being understood that further connections ensuring the operation of the burner 5 can be provided.

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)
  • Regulation And Control Of Combustion (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Measuring Fluid Pressure (AREA)
EP88117248A 1987-11-05 1988-10-17 Appareil pour chauffer de l'eau notamment une chaudière de chauffage d'eau chaude Expired - Lifetime EP0314972B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88117248T ATE92173T1 (de) 1987-11-05 1988-10-17 Geraet zum erwaermen von wasser, insbesondere warmwasserheizkessel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873737474 DE3737474A1 (de) 1987-11-05 1987-11-05 Geraet zum erwaermen von wasser, insb. wasserheizkessel
DE3737474 1987-11-05

Publications (3)

Publication Number Publication Date
EP0314972A2 true EP0314972A2 (fr) 1989-05-10
EP0314972A3 EP0314972A3 (en) 1990-06-06
EP0314972B1 EP0314972B1 (fr) 1993-07-28

Family

ID=6339779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117248A Expired - Lifetime EP0314972B1 (fr) 1987-11-05 1988-10-17 Appareil pour chauffer de l'eau notamment une chaudière de chauffage d'eau chaude

Country Status (4)

Country Link
EP (1) EP0314972B1 (fr)
AT (1) ATE92173T1 (fr)
DE (2) DE3737474A1 (fr)
ES (1) ES2043758T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643273A1 (fr) * 1993-09-14 1995-03-15 Richard Vetter Installation produisant des gas de combustion, notamment chaudière d'eau chaude

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR995023A (fr) * 1949-07-15 1951-11-26 Chaffoteaux Et Maury Reunis Et Chauffe-eau à tirage forcé
DE3615805A1 (de) * 1986-05-10 1987-11-12 Richard Vetter Geraet zum erwaermen von wasser, insb. warmwasserheizkessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643273A1 (fr) * 1993-09-14 1995-03-15 Richard Vetter Installation produisant des gas de combustion, notamment chaudière d'eau chaude

Also Published As

Publication number Publication date
DE3737474A1 (de) 1989-05-18
DE3882648D1 (de) 1993-09-02
EP0314972A3 (en) 1990-06-06
EP0314972B1 (fr) 1993-07-28
ATE92173T1 (de) 1993-08-15
ES2043758T3 (es) 1994-01-01

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