EP0184024B1 - Deflektorhaube - Google Patents

Deflektorhaube Download PDF

Info

Publication number
EP0184024B1
EP0184024B1 EP85114276A EP85114276A EP0184024B1 EP 0184024 B1 EP0184024 B1 EP 0184024B1 EP 85114276 A EP85114276 A EP 85114276A EP 85114276 A EP85114276 A EP 85114276A EP 0184024 B1 EP0184024 B1 EP 0184024B1
Authority
EP
European Patent Office
Prior art keywords
inner body
outer jacket
outer casing
channel
cross
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
Application number
EP85114276A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0184024A1 (de
Inventor
Hans Ludwig
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.)
HEINRICH BRINKMANN ANLAGENVERPACHTUNG GmbH and Co KG
Original Assignee
HEINRICH BRINKMANN ANLAGENVERPACHTUNG GmbH and Co KG
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 HEINRICH BRINKMANN ANLAGENVERPACHTUNG GmbH and Co KG filed Critical HEINRICH BRINKMANN ANLAGENVERPACHTUNG GmbH and Co KG
Priority to AT85114276T priority Critical patent/ATE32257T1/de
Publication of EP0184024A1 publication Critical patent/EP0184024A1/de
Application granted granted Critical
Publication of EP0184024B1 publication Critical patent/EP0184024B1/de
Expired 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
    • F23L17/14—Draining devices
    • 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

Definitions

  • the invention relates to a deflector hood for chimneys, in particular for the exhaust air lines of industrial suction systems for digestors or the like, consisting of an outer jacket located as an attachment to an outer jacket extending into an inflow and outflow opening and extending in the middle between two openings Exhaust air duct and an inner body held in the outer jacket and continuously widening from a base surface in the direction of the outflow opening, the interior space of which is open towards the outflow opening and is connected to the surroundings in the region of the base surface by means of a channel guided through the wall of the outer jacket.
  • Deflector hoods of this type serve to prevent rainwater from entering the exhaust air duct and thus to protect it against the flow impairment caused by moisture ingress, which in conventional chimneys takes the form of a reduction in the suction draft or even undesirable sooting, in industrial exhaust air ducts, especially exhaust air ducts of digestors in the form of other, depending on the type of system different disturbances can occur.
  • the known deflector hoods fulfill their intended task to the fullest satisfaction, but on the other hand represent obstacles that cause considerable flow resistance, which must be compensated for by maintaining a correspondingly increased exhaust gas temperature or a correspondingly increased fan output.
  • a deflector hood of this type is known from DE-B-1 009383.
  • the present invention has for its object to provide a deflector hood with a reduced flow resistance and the invention consists in that the inner body has a shape corresponding to the outer shell, widening to the middle level and then narrowing again to the outflow opening, that the between the outer jacket and the inner body enclosed annular space has a continuously increasing cross section from the inflow opening to the outflow opening.
  • the invention provides a deflector hood with diffuser properties which opposes the flowing medium with a flow resistance which is substantially reduced in comparison with the known deflector hoods.
  • the point of reversal at which the positive static pressure changes into a negative static pressure is still inside the hood, so that with the aid of the deflector hood according to the invention, it is essential compared to the known hoods more compact construction, a "pressure recovery" which improves the draft in the exhaust air duct is achieved.
  • the (liquid) discharge led from the interior of the inner body through the outer wall of the outer jacket can originate from the side surface of the inner body and have wing shape.
  • the base surface of the inner body pointing in the direction of the inflowing gases can be given a rounded, tapering and therefore aerodynamically favorable shape, and the (water) drainage channel can also be given a streamlined profile. In this way, as measurements have shown, reduced drag coefficients in the deflector hood can be achieved down to a value of 0.64 and below.
  • the deflector hood shown in the drawing for the exhaust air ducting of a suction system for digestors consists of an outer jacket 3 widening from both outflow and inflow openings 1, 2 into a middle, lying between the openings plane A as an attachment to the exhaust air line and one in the outer jacket 3 held from the base 4 in the direction of the outflow opening 1 continuously widening inner body 5, the interior of which is open towards the outflow opening in the region of the base surface is connected to the surroundings by means of a channel 6 guided through the wall of the outer casing 3.
  • the inner body 5 has a shape corresponding to the outer jacket 3, which widens in this way up to the middle plane A and then narrows again in the direction of the outflow opening 1, such that the annular space 7 enclosed between the outer jacket 3 and the inner body 5 has a shape different from the inflow opening 2 up to the outflow opening 1 has a continuously enlarging cross section. Goes marr. In this sense, assuming that the diameter of the inflow opening is 2194 mm and thus the cross section is 0.0295 m 2 , the ring channel has a cross section of 0.036 m 2 in plane B, a cross section of 0.037 m 2 in plane A and in plane C a cross section of 0.046 m 2 .
  • the outflow opening 1 is 0.452 m2 with a diameter of 240 mm .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Outer Garments And Coats (AREA)
EP85114276A 1984-11-22 1985-11-08 Deflektorhaube Expired EP0184024B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114276T ATE32257T1 (de) 1984-11-22 1985-11-08 Deflektorhaube.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3442588 1984-11-22
DE19843442588 DE3442588A1 (de) 1984-11-22 1984-11-22 Deflektorhaube

Publications (2)

Publication Number Publication Date
EP0184024A1 EP0184024A1 (de) 1986-06-11
EP0184024B1 true EP0184024B1 (de) 1988-01-27

Family

ID=6250878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114276A Expired EP0184024B1 (de) 1984-11-22 1985-11-08 Deflektorhaube

Country Status (5)

Country Link
US (1) US4655121A (enrdf_load_stackoverflow)
EP (1) EP0184024B1 (enrdf_load_stackoverflow)
JP (2) JPS61252427A (enrdf_load_stackoverflow)
AT (1) ATE32257T1 (enrdf_load_stackoverflow)
DE (1) DE3442588A1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127247C2 (de) * 1991-08-17 1995-02-23 Beck Klaus Lizenzverwaltung Regenabweisdiffusor-Haube
NL1005472C2 (nl) * 1997-03-07 1998-09-18 Muelink & Grol Bv Uitstroommondstuk voor rookgasafvoer van een verbrandingshaard.
US7320636B2 (en) * 2004-01-20 2008-01-22 Greenheck Fan Corporation Exhaust fan assembly having flexible coupling
CA2493651C (en) * 2004-01-20 2014-05-20 Greenheck Fan Corporation Exhaust fan assembly having a windband
US20050159101A1 (en) * 2004-01-20 2005-07-21 Hrdina Terry L. Pivotal direct drive motor for exhaust assembly
US7682231B2 (en) * 2004-01-20 2010-03-23 Greenheck Fan Corporation Exhaust fan assembly
US7547249B2 (en) * 2004-07-15 2009-06-16 Greenheck Fan Corporation Exhaust fan assembly having H-out nozzle
US20070125361A1 (en) * 2005-12-02 2007-06-07 Black Bailey J Jr Vent cap assembly
US7458888B2 (en) * 2007-02-27 2008-12-02 Huta Robert M Chimney termination cap
US20100285730A1 (en) * 2009-05-11 2010-11-11 Minel Kupferberg High velocity nozzle and windband assembly
US11274825B2 (en) * 2016-07-13 2022-03-15 Uchicago Argonne, Llc Passive and no-loss weather cap for protection of wind induced downdraft in sensitive exhaust systems

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US45403A (en) * 1864-12-13 Improved chimney-top
US1097487A (en) * 1913-10-21 1914-05-19 Benjamin H Van Auken Ventilating-cowl.
US1986176A (en) * 1933-03-18 1935-01-01 Zwerling Harry Ventilator
DE812690C (de) * 1949-03-22 1951-09-03 Walther & Cie Ag Schornsteinaufsatz
FR1008110A (fr) * 1950-01-09 1952-05-14 Chapeau de cheminée
DE1009383B (de) * 1952-07-04 1957-05-29 Barmer Eisen Und Blechwarenfab Oberseitig offener feststehender Entlueftungsaufsatz
DE1842397U (de) * 1961-09-18 1961-11-30 Erhard Muhr Dachhaube fuer abgase.
DE1863687U (de) * 1962-10-13 1962-12-13 Mestrup & Co Weitwurf-fortlufthaube.
DE2607712A1 (de) * 1976-02-25 1977-09-08 Hans Schwarz Ohg Abluftmischhaube
NL7902095A (nl) * 1979-03-16 1980-09-18 Willem Jacobus Kleijn Schoorsteenkap.

Also Published As

Publication number Publication date
ATE32257T1 (de) 1988-02-15
US4655121A (en) 1987-04-07
DE3442588C2 (enrdf_load_stackoverflow) 1992-05-21
DE3442588A1 (de) 1986-05-22
EP0184024A1 (de) 1986-06-11
JPH0379034U (enrdf_load_stackoverflow) 1991-08-12
JPS61252427A (ja) 1986-11-10

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