[go: up one dir, main page]

WO1989006771A1 - Procede et appareil de surveillance et de commande d'un generateur de chaleur du type a combustion pulsatoire - Google Patents

Procede et appareil de surveillance et de commande d'un generateur de chaleur du type a combustion pulsatoire Download PDF

Info

Publication number
WO1989006771A1
WO1989006771A1 PCT/SE1988/000703 SE8800703W WO8906771A1 WO 1989006771 A1 WO1989006771 A1 WO 1989006771A1 SE 8800703 W SE8800703 W SE 8800703W WO 8906771 A1 WO8906771 A1 WO 8906771A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
burning chamber
pressure variations
heating generator
burning
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.)
Ceased
Application number
PCT/SE1988/000703
Other languages
English (en)
Inventor
Morgan Olsson
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.)
Pulsonex AB
Original Assignee
Pulsonex AB
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 Pulsonex AB filed Critical Pulsonex AB
Publication of WO1989006771A1 publication Critical patent/WO1989006771A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F23N2227/00—Ignition or checking
    • F23N2227/10—Sequential burner running

Definitions

  • the invention relates to a method and a device for monitoring and controlling a pulse combustion heating generator.
  • This type of heating generator comprises a Helmholtz resonator having a resonant chamber arranged as a burning chamber, a pulse tube connected in one
  • a decoupler connected to the other end of said pulse tube and having an exhaust pipe, an inlet chamber having an initiation blower, a valve controlled by the pulse pressure of the burning chamber for regulating the
  • An object of the invention is to eliminate the difficulties and drawbacks mention above, and to accomplish a realiable indication of normal operation of a pulse combustion heating generator by utilizing a control system which in relation to previously known control systems is more simple and more reliable.
  • the invention is based on the fact that said type of heating generator operates at an essentially constant and well defined pulse frequency, normally at about 60-100 Hz.
  • the invention relates to a method for controlling a pulse combustion heating generator which has been given the characteristics of claim 1, and to a control apparatus in accordance with claim 8 for carrying out said method.
  • FIG. 1 is a diagrammatic vertical sectional view of a pulse combustion heating generator
  • FIG. 2 is an enlarged vertical sectional view of the inlet and burning chambers disclosing details of the embodiment
  • FIG. 3 is a block diagram on the electronic part of the control apparatus according to the invention.
  • the heating generator of the present type is shown in FIG. 1 and 2, has a pulse combustion operation according to previously known technique, and is disposed in a water tank 10 having a water inlet 11 and outlet 12, the water being circulated in a water based heating pipework.
  • the heating generator comprises a Helmholtz resonator having a resonant ' chamber 13 and a pulse tube 14 one end thereof being connected to the resonant chamber.
  • the resonant chamber forms the burning chamber of the heating generator and is provided with a nozzle 15 for supplying a gaseous, floating or fluidized fuel through a solenoid valve 16 and a spark plug 17, connected to an inition transformer 17A.
  • An inlet chamber 18 is connected to the burning chamber through 0 and air inlet 19 controlled by a valve 20.
  • the valve is arranged to operate in an automatic fashion to alternately close at positive pressure in the burning chamber and to open at negative pressure therein in a rythmical movement.
  • the inlet chamber communicates 5 with the external air through a silencer and/or a filter and an inlet 21 provided with an inition blower 22.
  • the other end of the pulse tube is connected to a decoupler 23 having an exhaust pipe 24 connected to a Q chimney or other flue.
  • the heating generator When the heating generator is in normal mode of operation the fuel injected in the burning chamber 13 is ignited when entering the hot burning chamber, and will be burnt up in combination with the oxygen present in the burning chamber which results in a positive pressure and a closing of the valve 20 as an effect of said positive pressure.
  • the valve 20 When a subsequent negative pressure is created the valve 20 is reopened to allow an inflow of air in the burning chamber from the inlet chamber 18, followed by another ingnition and combustion of fuel.
  • combustion pulses having a regular frequency are generated in the burning chamber.
  • the heating generator is run intermittently in dependence on the temperature of the water in the tank 10 in a conventional way; when a predetermined increased temperature of the water is reached the heating generator is turned off and then restarted when the temperature is decreased to a predetermined lower temperature.
  • the fuel must be ignited externally by means of the spark plug 17 and aior must be forced into the inlet chamber 18 by means of the inition blower 22.
  • the ignition device and the initiation blower are turned on at start up, but must be turned off when the heating generator is in normal operation, such a function defined here as a self-ignition of the fuel and the air being injected by a negative pressure in the burning chamber.
  • a sensor 25 in the disclosed embodiment is disposed in the inlet chamber 18 to sense the pressure variations appearing in the inlet chamber during normal operation of the heating generator.
  • the sensor comprises a piezoelectric-crystal element because of the reliability thereof but another type of sensor can also be used when applying the invention.
  • the sensor may for instance comprise a diaphragm responsive to the pressure variations, the movements of the diaphragm generated by said pressure variations being registered by an optical sensor.
  • the electric signal received from the sensor 25 is supplied to an electronic system shown as a block diagram in FIG. 3.
  • the signal in normal operation of the heating generator has a frequency in the interval 60-100 Hz the signal from the sensor is first passed through a filter 26 transmitting frequencies between 30 and 200 Hz whereby noice emanating from turbulence in the heating generator, ambient sounds an sounds from the initiation blower is cut off from the signal.
  • a filter 26 transmitting frequencies between 30 and 200 Hz whereby noice emanating from turbulence in the heating generator, ambient sounds an sounds from the initiation blower is cut off from the signal.
  • a frequency is measured in a circuit 28.
  • the measured value is compared with a prescribed frequency in a comparator 29 .and the outcome is registered by a control device 30 controlling the supply of fuel, the ingition and the initiation blower.
  • the control device i.e.
  • the supply of fuel is maintained by the solenoid valve 16 while the ignition device 17, 17A and the intiation blower 22 are turned off after some delay.
  • the control device 30 prepared to start the ignition device and initiation blower immediately, if the signal to the turn off device would drop off, for instance due to functional trouble.
  • the senor 25 is mounted in the inlet chamber because the environment therein is "good" but other locations are possible.
  • the sensor could instead be disposed in the pressure chamber arranged on the downstream side of the valve 20 and having a reference number 31 in FIG. 2, the environment in the pressure chamber also being suitable but where the disposal adjacent to the valve and the inlet nozzle can make the mounting complicated and can also make the sensor less available for inspection and exchange.
  • the sensor can also be disposed in the burning chamber 13, in the decoupler 23 or in the exhaust pipe 24 but said locations are less favourable considering the environment present there.
  • the placing of an piezoelectric sensor shown is the embodiment which at present for several reasons is the preferred one.
  • the electronic system can be implemented with other components than those utilized in the disclosed embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

La présente invention se rapporte à un procédé et à un dispositif servant à surveiller et à commander un générateur de chaleur à combustion pulsatoire, qui comprend un résonateur de Helmholtz comportant une chambre de résonance (13) destinée à fonctionner comme chambre de brûlage, un tube d'impulsions (14) dont l'une des extrémités est reliée à la chambre de brûlage, un découpleur 23) relié à l'autre extrémité du tube d'impulsions et pourvu d'une conduite d'échappement (24), une chambre d'admission (18) comportant une soufflante d'amorçage (22), une soupape (20) commandée par la pression des impulsions s'exerçant dans la chambre de brûlage pour permettre la commande de la connexion entre la chambre d'admission et la chambre de brûlage, des organes (15, 16) servant à injecter un carburant gazeux, en suspension ou fluidisé dans la chambre de brûlage, ainsi qu'un dispositif d'allumage (17, 17A) servant à l'allumage du combustible injecté dans la chambre de brûlage. Les variations de pression dans le générateur de chaleur produites pendant le fonctionnement dudit générateur sont détectées par un détecteur (25), dont les résultats de sortie sont introduits dans un comparateur destiné à comparer la fréquence des variations de pression avec une fréquence prédéterminée. Lorsque la fréquence des variations de pression est suffisamment conforme à la fréquence prédéterminée, un dispositif est actionné pour arrêter le fonctionnement du dispositif d'allumage et de la soufflante d'amorçage.
PCT/SE1988/000703 1988-01-13 1988-12-27 Procede et appareil de surveillance et de commande d'un generateur de chaleur du type a combustion pulsatoire Ceased WO1989006771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800077A SE462661B (sv) 1988-01-13 1988-01-13 Saett och anordning foer oevervakning och styrning av en med pulsfoerbraenning arbetande vaermegenerator innefattande en helmholtz-resonator
SE8800077-3 1988-01-13

Publications (1)

Publication Number Publication Date
WO1989006771A1 true WO1989006771A1 (fr) 1989-07-27

Family

ID=20371043

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000703 Ceased WO1989006771A1 (fr) 1988-01-13 1988-12-27 Procede et appareil de surveillance et de commande d'un generateur de chaleur du type a combustion pulsatoire

Country Status (4)

Country Link
EP (1) EP0417096B1 (fr)
DE (1) DE3884408T2 (fr)
SE (1) SE462661B (fr)
WO (1) WO1989006771A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016135494A1 (fr) * 2015-02-25 2016-09-01 Lightwaverf Technology Limited Procédé de surveillance de l'utilisation d'une chaudière, chaudière et capteur d'utilisation de chaudière

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE514161C2 (sv) * 1999-03-18 2001-01-15 Mareck Bv Sätt och anordning för övervakning och styrning av en med pulsförbränning arbetande värmegenerator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007000A (en) * 1972-11-03 1977-02-08 Clean Air Company, Inc. Compressed oil burner starting mechanism
GB1495015A (en) * 1975-09-01 1977-12-14 British Petroleum Co Monitoring and/or control of burners
US4080149A (en) * 1976-04-01 1978-03-21 Robertshaw Controls Company Pulse combustion control system
US4708635A (en) * 1986-10-07 1987-11-24 American Gas Association Pulse combustion apparatus and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007000A (en) * 1972-11-03 1977-02-08 Clean Air Company, Inc. Compressed oil burner starting mechanism
GB1495015A (en) * 1975-09-01 1977-12-14 British Petroleum Co Monitoring and/or control of burners
US4080149A (en) * 1976-04-01 1978-03-21 Robertshaw Controls Company Pulse combustion control system
US4708635A (en) * 1986-10-07 1987-11-24 American Gas Association Pulse combustion apparatus and method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 164, M395, Abstract of JP 60-38514, publ. 1985-02-28. *
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 303, M434, Abstract of JP 60-140006, publ. 1985-07-24. *
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 98, M375, Abstract of JP 59-221506, publ. 1984-12-13. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016135494A1 (fr) * 2015-02-25 2016-09-01 Lightwaverf Technology Limited Procédé de surveillance de l'utilisation d'une chaudière, chaudière et capteur d'utilisation de chaudière

Also Published As

Publication number Publication date
DE3884408D1 (de) 1993-10-28
SE462661B (sv) 1990-08-06
SE8800077L (sv) 1989-07-14
SE8800077D0 (sv) 1988-01-13
EP0417096B1 (fr) 1993-09-22
DE3884408T2 (de) 1994-02-17
EP0417096A1 (fr) 1991-03-20

Similar Documents

Publication Publication Date Title
KR930009907B1 (ko) 내연기관 제어장치
US20020037487A1 (en) Method and device for supervision and control of a heat generator with pulsating combustion
CN104990103B (zh) 自动点火装置及其控制方法
EP0417096B1 (fr) Procede et appareil de surveillance et de commande d'un generateur de chaleur du type a combustion pulsatoire
US4808107A (en) Pulse combustion system
EP0531072A1 (fr) Dispositif de sécurité de flamme
US5044929A (en) Ignition control apparatus for pulse combustor
US5386815A (en) Electric control apparatus for pulse combustion device
US5775895A (en) Combustion-state detecting circuit of combustion apparatus
JP3366516B2 (ja) 燃焼制御装置
JPH0327747B2 (fr)
JPH0471124B2 (fr)
JP3230486B2 (ja) バーナの起動制御方法
JP2783162B2 (ja) 燃焼装置における不着火時の異常判定方法
JP2876943B2 (ja) ボイラ起動時の燃焼制御方法
JP2513520Y2 (ja) 給湯機の着火時の安定燃焼装置
KR100190881B1 (ko) 엔진 보호 시스템
JPH0144923Y2 (fr)
JPS6026263Y2 (ja) 流動層焼却炉用燃焼安全装置
KR100526784B1 (ko) Ｌｐｇ 차량의 백 파이어 발생시 에어크리너 파손 방지장치
JP2001507428A (ja) 燃焼センサーフィードバックシステムの診断装置
JP3079628B2 (ja) 燃焼器具の安全装置
KR950009077A (ko) 연소기기의 불완전연소 검출장치
JPS6349122B2 (fr)
KR900012048A (ko) 산소부족 검출기능을 구비한 버너용 연료시스템

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): FI US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1989901147

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1989901147

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1989901147

Country of ref document: EP