EP0196659A2 - Vorrichtung zur Verstärkung des Zuges - Google Patents

Vorrichtung zur Verstärkung des Zuges Download PDF

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Publication number
EP0196659A2
EP0196659A2 EP86104467A EP86104467A EP0196659A2 EP 0196659 A2 EP0196659 A2 EP 0196659A2 EP 86104467 A EP86104467 A EP 86104467A EP 86104467 A EP86104467 A EP 86104467A EP 0196659 A2 EP0196659 A2 EP 0196659A2
Authority
EP
European Patent Office
Prior art keywords
chimney
confusor
draught
gas
mantle
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.)
Withdrawn
Application number
EP86104467A
Other languages
English (en)
French (fr)
Other versions
EP0196659A3 (de
Inventor
Gyula Szegvari
Bela Soos
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.)
Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat
Licencia Talalmanyokat Ertekesito Vallalat
Original Assignee
Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat
Licencia Talalmanyokat Ertekesito Vallalat
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 Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat, Licencia Talalmanyokat Ertekesito Vallalat filed Critical Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat
Publication of EP0196659A2 publication Critical patent/EP0196659A2/de
Publication of EP0196659A3 publication Critical patent/EP0196659A3/de
Withdrawn legal-status Critical Current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
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • 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
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans

Definitions

  • the invention relates to an apparatus for the intensification of the draught in chimneys comprising an inner gas channel connected to the chimney having a chimney capital.
  • chimneys con-. nected not only to furnaces and other firing equipment but to aeration channels and systems are also considered.
  • the so called wind vanes or weathercocks are the best known ones which have a revolving upper part.
  • the upper part rotates in respect to the lower part of the weathercock fixed to the chimney and, in this way, it turns away the gas outlet of the chimney from the wind direction.
  • the weathercock will not revolve when the wind impacts on it. As a result, the wind will blow right into the chimney funnel and, thus,
  • Another known solution for preventing the blow-in of the wind is a device which has a cylindrical mantle connected to the chimney capital provided with upwardly-directed side tubes passing through the mantle at obLique angles in respect to the mantle's LongitudinaL axis.
  • the gas flow within a chimney is caused by the effective pressure, the so called draught.
  • the effective pressure is the sum of the gravitational pressure difference and the statical pressure difference occuring in the vicinity of the chimney head on impact of the wind and is related to the pressure measurable in wind lull. From among these parameters, only the increasing of the graviational pressure difference was attempted in the previous solutions. This could be realized by erecting higher and higher chimneys.
  • a suitable draught for example, a minimal .chimney height above the trussing is prescribed in building regulations.
  • the effective pressure i.e. the draught
  • the effective pressure is determined to a great extent by the statical pressure difference which, however, varies between broad limits since the force of the wind is ever changing.
  • the combustion gases are cold at the beginning of the firing cycle, which does not enhance the draught.
  • the Largest draught is usually required at the start of the firing cycle.
  • the invention's main object is to provide an apparatus with which the effective pressure, the so called draught, could be increased and held at a possibly high and even level without endangering the security of the chimney's operation or any other factor or margin of safety.
  • the apparatus has a confusor provided with an inner mantle and an outer mantle covered by a cap, and the gas channel is formed within the inner mantle, and between the inner mantle and the outer mantle a confusor space narrowing from the chimney capital towards the cap is provided, and gas outlets are provided between the confusor and the cap.
  • inlets of the confusor space are provided near the chimney capital and outlet of the confusor space are provided near the gas outlets of the apparatus.
  • outer surfaces of the confusor and/or the cover have a duLL-bLack surface finish.
  • the gas outlets are surrounded by a guard grid.
  • an electric motor is arranged under the cap, on the shaft of which is provided an impeLLer of a ventilator sucking gas from the inner gas channel and forcing it towards the gas outlets.
  • an electronic control circuit is attached having a signal transmitter detecting the draught within the chimney and a switching circuit controlling the electric motor in dependence upon the signal delivered by the signal transmitter.
  • the signal transmitter detecting the draught is a depression detector and is arranged in a gas funnel of the chimney.
  • the apparatus for intensifying the draught in this invention is mounted on a chimney capital 2 by an anchor frame 1 and is provided with a confusor 3 which is covered on the top by a cap 4.
  • the confusor 3 has a double mantle, and within the inner mantle 5, an inner gas channel 6 of the apparatus is provided. This inner gas channel 6 is connected to a gas funnel 7 of the chimney, it is formed as an elongation of this funnel 7.
  • a confusor space 9 is formed within the outer mantle 8 of confusor 3.
  • this confusor space 9 between inner mantle 5 and outer mantle 8 is narrowing from its inlets 10 at chimney capital 2 towards its outlets 11 at cap 4. Because of the inclined inner mantle 5, at the same time, inner gas channel 6 is widening in the same direction. Outlets 11 of confusor space 9 and outlets of inner gas channel 6 are practically at the same height, where gas outlets 12 of the apparatus are provided between confusor 3 and cap 4.As a result of these constructional features, a confusor effect is created within the apparatus which enlarges and intensifies the draught of the chimney.
  • a horizontal rib 13 is provided at inlets 10 of confusor space 9. With this, the gas flow, e.g. the side wind entering the confusor space 9 as shown by arrows 14 will be distributed evenly therein.
  • the narrowing confusor space 9 forces the entering gas flow to stream with an increasing speed as it proceeds towards outlets 11, where the highest flow speed will be reached.
  • inner gas channel 6 is wider and wider towards gas outlets 12 and, therefore, the pressure of the gas flowing upwards therein as shown by an arrow 15 will be smaller and smaller.
  • the flows comming from inner gas channel 6 and from confusor space 9 will be united at gas outlets 12 as shown by an arrow 16 with a remarkable drop in pressure. This drop in pressure "sucks" the inner gas channel 6 and, through this, the gas funnel 7 of the chimney. This results in a significant intensification of the draught in the chimney.
  • outer surfaces of outer mantle 8 and cap 4 have a dull-black surface finish and, therefore, the impacting sunbeams . shown by arrows 17 considerably warm up these surfaces. The gas particles along the inner side of these surfaces will be hot, which increases their upwards streaming. This results in a further intensification of the confusor effect within the apparatus.
  • a guard grid 18 is arranged round around gas outlets 12, the main function of which is to slow down the side wind and to prevent
  • confusor 3 arranged on chimney capital 2 is the same way as in the previous embodiment.
  • the main difference between the two embodiments is the inclusion of an electric motor 19 under cap 4.
  • an impeller 20 of a ventilator is arranged which sucks the gas from inner gas channel 6 and forces it towards gas outlets 12.
  • ELectric motor -19 under cap 4 is arranged in a closed housing 21 above guard grid 18.
  • the operation of electric motor 19 is controlled by an electronic circuit not shown in the Figure.
  • the electric motor 19 should be in operation when the draught within the chimney is not sufficient. Therefore, the controlling signal for the operation of electric motor 19 should be delivered to motor 19 in dependence upon the strength of the draught.
  • a signal transmitter 22 detecting the draught within the chimney is arranged in funnel 7 in an optional place, e.g. in.the lower part of the funnel 7 of the chimney.
  • signal transmitter 22 is a depression detector having relatively high sensitivity.
  • the signal comming from transmitter 22 is compared with a nominal value and if transmitter 22 delivers a smaller signal than desired, electric motor 19 will be switched on by the control circuit. Impeller 20 of the ventilator starts to revolve and sucks inner gas channel 6 of the apparatus. Of course, this also results in a drop in pressure within gas funnel 7 of the chimney and, thus, causes an increased draught in the chimney. If the draught as prescribed exists in funnel 7, the signal comming from transmitter 22 will no Longer be smaller than the desired value, therefore, after the signal comparison as mentioned above, the control circuit switches off electric motor 19.
  • Fig. 2 The embodiment as shown in Fig. 2 is of particular importance for chimneys connected to firing equipment. It produces a sufficient draught even, when the chimney is cold and, thus, the graviational pressure difference small. After starting the firing equipment, this situation changes quite quickly, therefore, the electric motor 19 will be switched off after a relatively short period of time.
  • the apparatus intensifying the draught in this invention need not be confined only for use with chimneys connected to firing equipment . It can be mounted on aeration chimneys or on outlets of ventilation channels, since the draught of these chimneys or channels can also be intensified with it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Wind Motors (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
EP86104467A 1985-04-02 1986-04-02 Vorrichtung zur Verstärkung des Zuges Withdrawn EP0196659A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU125085A HU195689B (en) 1985-04-02 1985-04-02 Reinforcer of air draft
HU125085 1985-04-02

Publications (2)

Publication Number Publication Date
EP0196659A2 true EP0196659A2 (de) 1986-10-08
EP0196659A3 EP0196659A3 (de) 1987-02-04

Family

ID=10953543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104467A Withdrawn EP0196659A3 (de) 1985-04-02 1986-04-02 Vorrichtung zur Verstärkung des Zuges

Country Status (2)

Country Link
EP (1) EP0196659A3 (de)
HU (1) HU195689B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012024251A1 (de) * 2012-12-12 2014-06-12 Robert Bosch Gmbh Rotorvorrichtung für eine Brennstoffheizung mit einer koaxial in einer Zuluftleitung angeordneten Abluftleitung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE397098A (de) *
FR509074A (fr) * 1920-01-24 1920-10-30 Bouix Et Javal Dispositif aspirateur par dépression atmosphérique pour cheminées
FR530923A (fr) * 1920-12-22 1922-01-04 Aspirateur pour buées, fumées, etc.
FR1030902A (fr) * 1951-01-11 1953-06-18 Mitre de cheminée à tirage induit
FR1340322A (fr) * 1962-09-07 1963-10-18 Appareil pour le tirage de cheminées
CH461012A (de) * 1967-11-06 1968-08-15 Max Fitze Elektromechanik Und Kaminentlüftungsapparat
DE2901690B1 (de) * 1979-01-17 1979-10-25 Otto Geb Kg Abdeckhaube fuer Schornsteine
EP0079256A1 (de) * 1981-10-13 1983-05-18 André Amphoux Statische, dynamische und mechanische Absaugeinrichtung von Gasen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE397098A (de) *
FR509074A (fr) * 1920-01-24 1920-10-30 Bouix Et Javal Dispositif aspirateur par dépression atmosphérique pour cheminées
FR530923A (fr) * 1920-12-22 1922-01-04 Aspirateur pour buées, fumées, etc.
FR1030902A (fr) * 1951-01-11 1953-06-18 Mitre de cheminée à tirage induit
FR1340322A (fr) * 1962-09-07 1963-10-18 Appareil pour le tirage de cheminées
CH461012A (de) * 1967-11-06 1968-08-15 Max Fitze Elektromechanik Und Kaminentlüftungsapparat
DE2901690B1 (de) * 1979-01-17 1979-10-25 Otto Geb Kg Abdeckhaube fuer Schornsteine
EP0079256A1 (de) * 1981-10-13 1983-05-18 André Amphoux Statische, dynamische und mechanische Absaugeinrichtung von Gasen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012024251A1 (de) * 2012-12-12 2014-06-12 Robert Bosch Gmbh Rotorvorrichtung für eine Brennstoffheizung mit einer koaxial in einer Zuluftleitung angeordneten Abluftleitung
DE102012024251B4 (de) * 2012-12-12 2017-02-09 Robert Bosch Gmbh Rotorvorrichtung für eine Brennstoffheizung mit einer koaxial in einer Zuluftleitung angeordneten Abluftleitung

Also Published As

Publication number Publication date
HU195689B (en) 1988-06-28
EP0196659A3 (de) 1987-02-04
HUT43165A (en) 1987-09-28

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Inventor name: SZEGVARI, GYULA