EP0614050B1 - Dispositif de chauffage - Google Patents

Dispositif de chauffage Download PDF

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Publication number
EP0614050B1
EP0614050B1 EP94250047A EP94250047A EP0614050B1 EP 0614050 B1 EP0614050 B1 EP 0614050B1 EP 94250047 A EP94250047 A EP 94250047A EP 94250047 A EP94250047 A EP 94250047A EP 0614050 B1 EP0614050 B1 EP 0614050B1
Authority
EP
European Patent Office
Prior art keywords
pressure
gas
measuring channel
burner
blower
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
EP94250047A
Other languages
German (de)
English (en)
Other versions
EP0614050A1 (fr
Inventor
Rolf Bächli
Peter Goebel
Roger Meier
Klaus Richter
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.)
N.V. VAILLANT S.A.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant BV
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
Priority claimed from AT171193A external-priority patent/AT401197B/de
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant BV filed Critical Vaillant Austria GmbH
Publication of EP0614050A1 publication Critical patent/EP0614050A1/fr
Application granted granted Critical
Publication of EP0614050B1 publication Critical patent/EP0614050B1/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
    • 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
    • F23N5/16—Systems for controlling combustion using noise-sensitive detectors
    • 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
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F23N2225/06—Measuring pressure for determining flow
    • 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
    • F23N2233/06—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
    • F23N2235/20—Membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Definitions

  • the invention relates to a heating device according to the preamble of claim 1.
  • Such a heating device was known for example from EP 479 216.
  • vibrations occur due to unbalance of the fan, but also due to turbulence caused by the blades of the fan, which lead to a corresponding development of noise.
  • it is essential to detect mechanical damage, such as damage to the bearing of the fan, at an early stage in order to avoid consequential damage, which is very difficult to achieve with the known heating devices.
  • a device disclosed in JP-OS 92 301 200 for blowing off excess pressure as a function of the noise of a blower, the blower noise being recorded with a microphone.
  • the aim of the invention is to propose a heating device of the type mentioned at the outset which enables mechanical damage to be detected in a simple manner.
  • a memory for interference vibrations is assigned to the pressure sensor. In this way, it is possible to recognize whether there have been disturbing vibrations that have triggered a blocking signal for the gas valves and changes in the speed of the fan.
  • the speed of the fan can be brought to a value which is at least 50% above that when the burner was switched off.
  • the burner is switched off in a locking manner. In this way it is possible to not only detect combustion chamber vibrations, but before they lead to a high noise level, switch off the burner. At the same time, this also enables mechanical damage to the burner or its fan to be detected. This is to be assumed if the course of the signal of the analog pressure sensor does not correspond to a predetermined pattern even after the burner has been started several times, for example three times.
  • a logging memory with a logging interface can be provided, whereby it is possible for the customer service by simply connecting a reader to the logging interface to query the number of lockouts and to set corresponding maintenance intervals.
  • the heating device according to FIG. 1 has a blower 1 which is provided with a gas mixture formation tube 2 which ends in a vacuum chamber 4 surrounded by a housing 10.
  • a gas feed pipe 3 projects coaxially into the gas mixture formation tube 2 and passes through the wall of the housing 10 and is part of a console 9 which is on the outside of the Housing 10 is attached and forms a gas valve 5 together with a gas control block.
  • a pressure sensor 6 with a pressure transmitter 26 (FIGS. 2 and 3) is arranged which, via a measuring channel 11 running in sections on the outside of the gas supply pipe 3, the pressure P K inside the gas mixture formation pipe 2 and via a further, measuring channel 12 ending in the interior of the vacuum chamber 4 detects the pressure P L in the vacuum chamber 4.
  • the vacuum chamber 4 has an air supply opening 13 and is otherwise tight.
  • the air supply opening 13 is penetrated by an exhaust pipe 14, which is connected to a combustion chamber 8.
  • the fan 1 is flanged to the top of the combustion chamber 8, while a burner 7 and a heat exchanger 15 are arranged within the combustion chamber 8.
  • FIG. 2 schematically shows the function of the gas fitting 5.
  • the gas flows via two gas valves 16 to a pressure regulator 17.
  • This is equipped with a pressure transmitter 27, to which the pressure value P K in the gas mixture formation tube 2 and 2 is measured via the measuring channel 11 and the measuring channel 12 the pressure value P L is fed inside the vacuum chamber 4, the pressure regulator 17 regulating the gas pressure according to these values.
  • the gas flows to the gas supply pipe 3 via a main throughput throttle valve 18 and a nozzle 19.
  • the pressure transmitter 26 is also connected to the measuring channel 11 and the further measuring channel 12, more or less via branches.
  • This pressure transmitter 26 is shown schematically in FIG. 3.
  • the space delimited by a housing 20 is divided by a membrane 21, the two sides of the membrane 21 being acted upon by the pressure P L or the pressure P K.
  • This membrane 21 is caused to oscillate by pressure fluctuations on its two sides and acts via an extension 28 and a stop 29 on a ceramic bending beam 22 with electronics 23 attached, which supplies a signal corresponding to the pressure fluctuations.
  • This signal is fed to a sound decoder 24 and compared in a comparator 30 (FIG. 2) with a signal pattern which is predetermined in a memory 25 (FIG. 2) and which corresponds in each case to a specific speed of the blower 1. If the signal curve of the pressure sensor 6 does not correspond to the predefined one, the comparator 30 emits a blocking signal to one of the gas valves 16, as a result of which the burner 7 is stopped. Then the burner 7 can be started again at a higher speed of the fan 1.

Claims (5)

  1. Dispositif de chauffage avec un brûleur (7) alimenté par une tubulure mélangeuse (2) et un ventilateur (1) en amont dudit brûleur auquel est adjoint, par l'intermédiaire d'un ensemble (5) comprenant des valves à gaz (16), une valve régulatrice de pression (17) et une buse à gaz (19), un conduit d'alimentation (3) qui pénètre dans la tubulure (2) par une entrée d'air, ladite tubulure recevant un premier tube de mesure (11) pour relever la pression (PK) du mélange, tube relié à un régulateur de pression (27) de la valve (17) de l'ensemble (5), le ventilateur (1) et une chambre de combustion (8) autour du brûleur (7) étant logés dans une chambre de dépression (4) munie d'une entrée d'air (13) et où se termine un deuxième tube de mesure (12) pour contrôler la pression (PL) dans la chambre de dépression (4), relié au régulateur (27), dispositif caractérisé par le fait que le premier tube de mesure (11) et le deuxième tube de mesure (12) se terminant dans la chambre de dépression (4) sont reliés outre au régulateur (27) à un capteur manométrique (6) analogique qui comprend un décodeur acoustique (24) relié à un capteur de tours contrôlant le ventilateur (1), le décodeur (24) émettant un signal de blocage pour les valves à gaz (16) en cas d'écart de la réponse en fréquence du signal du capteur manométrique (6) vis-à-vis d'une allure définie en fonction de la vitesse du ventilateur (1).
  2. Dispositif de chauffage suivant la revendication 1, caractérisé par le fait que le capteur manométrique (6) coopère avec un accumulateur pour oscillations parasites.
  3. Dispositif de chauffage suivant la revendication 1 ou 2, caractérisé par le fait que le premier tube de mesure (11) et le deuxième tube de mesure (12) aboutissant dans la chambre de dépression (4) passent à travers un support (9) fixé extérieurement sur la chambre de dépression (4) et qui porte aussi bien l'ensemble (5) que le capteur manométrique (6).
  4. Dispositif de chauffage suivant l'une des revendications 1 à 3, caractérisé par le fait que le capteur manométrique (6) est conçu comme capteur de pression différentielle dont les deux chambres communiquent avec le premier tube de mesure (11) et le deuxième tube de mesure (12).
  5. Dispositif de chauffage suivant l'une des revendications 1 à 4, caractérisé par le fait qu'il est prévu un organe régulateur avec un microprocesseur, relié à une mémoire où peuvent être enregistrés les arrêts provoqués par le signal de blocage du décodeur acoustique et qui peuvent être édités par l'intermédiaire d'une interface d'enregistrement.
EP94250047A 1993-03-04 1994-02-24 Dispositif de chauffage Expired - Lifetime EP0614050B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4307274 1993-03-04
DE4307274 1993-03-04
AT171193A AT401197B (de) 1993-08-26 1993-08-26 Heizeinrichtung
AT1711/93 1993-08-26

Publications (2)

Publication Number Publication Date
EP0614050A1 EP0614050A1 (fr) 1994-09-07
EP0614050B1 true EP0614050B1 (fr) 1997-07-23

Family

ID=25596624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250047A Expired - Lifetime EP0614050B1 (fr) 1993-03-04 1994-02-24 Dispositif de chauffage

Country Status (3)

Country Link
EP (1) EP0614050B1 (fr)
AT (1) ATE155868T1 (fr)
DE (2) DE59403418D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2765313B1 (fr) * 1997-06-27 1999-09-17 Europ Equip Menager Bruleur a gaz a premelange total pour cuisson domestique
DE19824521B4 (de) * 1998-06-02 2004-12-23 Honeywell B.V. Regeleinrichtung für Gasbrenner
EP1146288A1 (fr) * 2000-04-13 2001-10-17 Cybertech Ventures, Inc. Soupape de commande proportionelle à gaz
US10281351B2 (en) * 2012-11-19 2019-05-07 A. O. Smith Corporation Water heater and pressure probe for a water heater
DE102020132504A1 (de) * 2020-12-07 2022-06-09 Ebm-Papst Landshut Gmbh Drosselanordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395995A (en) * 1945-03-19 1946-03-05 Fluor Corp Vibration-responsive control for cooling tower fans
US4706881A (en) * 1985-11-26 1987-11-17 Carrier Corporation Self-correcting microprocessor control system and method for a furnace
US4959638A (en) * 1987-12-09 1990-09-25 The United States Of America As Represented By The Secretary Of The Navy Combustion efficiency analyzer, acoustic
JPH04301200A (ja) * 1991-03-29 1992-10-23 Hitachi Ltd 流体機械のサージング制御方法

Also Published As

Publication number Publication date
DE9403329U1 (de) 1994-06-16
DE59403418D1 (de) 1997-08-28
EP0614050A1 (fr) 1994-09-07
ATE155868T1 (de) 1997-08-15

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