EP1030088A1 - Bout de sein - Google Patents

Bout de sein Download PDF

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Publication number
EP1030088A1
EP1030088A1 EP00301123A EP00301123A EP1030088A1 EP 1030088 A1 EP1030088 A1 EP 1030088A1 EP 00301123 A EP00301123 A EP 00301123A EP 00301123 A EP00301123 A EP 00301123A EP 1030088 A1 EP1030088 A1 EP 1030088A1
Authority
EP
European Patent Office
Prior art keywords
valve
bleed
bleed screw
screw
head
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Withdrawn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
EP00301123A
Other languages
German (de)
English (en)
Inventor
Patric Angelo
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
Priority claimed from GBGB9903682.4A external-priority patent/GB9903682D0/en
Application filed by Individual filed Critical Individual
Publication of EP1030088A1 publication Critical patent/EP1030088A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting arrangements
    • F24D19/085—Arrangement of venting valves for central heating radiators
    • F24D19/086—Arrangement of venting valves for central heating radiators hand-operated

Definitions

  • This invention is concerned with a bleed valve and in particular with a bleed valve for a radiator.
  • radiators In colder countries central heating systems commonly consist of a number of radiators filled with water and connected by flow and return pipes to a water heater, a circulating pump normally being included. It is quite usual for pockets of gas, air or gas produced by the formation of iron oxide, to form at the top of at least one radiator in a system, making that radiator noisy and inefficient, and impairing the circulation of water. To obviate this problem radiators are provided at their top with a bleed valve sometimes known as a manual air venting valve.
  • Bleed valves typically comprise a valve body having an internal passage comprising in sequence a small orifice, a conical valve seat, a plain passage and an internally threaded hole in which is located a square headed, air bleed screw having a conical valve head for engagement with the conical valve seat.
  • a special key with a square hole matching the square head of the air bleed screw is used to engage and unscrew the air bleed screw and move the valve head off the valve seat.
  • the gas in the gas pocket is forced out giving a hissing noise, and when all the gas has been expelled water is ejected, and the air bleed screw is then screwed back in to close the valve head onto its seat and prevent the further release of water.
  • the present invention is a bleed valve comprising a valve body and a bleed screw that can be screwed into and out of the body, a primary valve between the bleed screw and the body which is closed when the bleed screw is fully screwed into the body, and a secondary valve between the bleed screw and the body which is closed when the bleed screw is unscrewed to restrict the flow of liquid.
  • the secondary valve may comprise a valve seat on the valve body and a valve head at the inner end of the bleed screw.
  • the bleed valve may be a radiator bleed valve.
  • a bleed valve comprises a body 10 having a passage therethrough in which is located a bleed screw 12.
  • the bleed screw has an external thread 14 engaging an internal thread 16 in the passage, the bleed screw being screwed into and out of the body 10 by a tool adapted to engage a head 18 forming the outer extremity of the bleed screw.
  • the bleed screw 12 has a conical valve head 20 which cooperates with a conical valve seat 22 in the passage through the valve body to form a primary valve which is closed when the bleed screw 12 is fully screwed into the valve body 10.
  • the bleed screw 12 has a valve stem 24 projecting inwardly from the valve head 20 and at its inner end 26 is provided a secondary valve head comprising an elastic o-ring 30 located in an annular groove 32.
  • a circular edge 34 At the inner end of the passage through the valve body 10 is a circular edge 34 which functions as a seat for the secondary valve head 30 and forms with it a secondary valve.
  • the valve body 10 has a vent passage 38 connecting the outside of the radiator with the main passage at a point outside the primary valve seat 22.
  • the bleed screw 12 is normally fully screwed into the body 10 thus seating the primary valve head 20 on the primary valve seat 22 to prevent the escape of gas or water from the radiator.
  • the bleed screw is unscrewed slightly to open the primary valve and allow gas to escape past the primary valve and through the vent passage 38 to the exterior of the radiator.
  • the bleed screw is screwed back into the body to close the primary valve.
  • the pressure in the radiator forces the bleed screw outwardly until the secondary valve head, the o-ring 30, engages the secondary valve seat 34 to close the secondary valve and at least severely restrict the flow of water to the outside of the radiator, thus obviating external damage and making it easy to screw the bleed screw back into the body.
  • the secondary valve head also serves to retain the bleed screw captive in the body 10 as the pressure in the radiator is insufficient to force the o-ring 30 out past the edge 34.
  • the assembly of the valve is simple, the bleed screw being merely pushed through the main passage in the body causing the o-ring to be compressed by the primary valve seat 22 to allow the o-ring to pass into the passage through the valve body 10.
  • the bleed valve shown in Fig. 1 is integral with the radiator, but could equally be a separate unit, the body 10 then having an external thread engaging a tapped hole in the body of the radiator.
  • valve stem 24 of this embodiment is extended by about 10% as compared with the valve stem of Fig. 1, and consists of three distinct sections 48, 50 and 52, a secondary valve head 54 being provided at its inner end
  • the first section 48 has a diameter about 40% of the diameter of the orifice 46 at the inner end of the passage through the body of the valve. As the bleed screw is unscrewed, the section 48 permits the escape of gas past the now open primary valve and through the vent passage 38 to atmosphere.
  • the second section 50 is a conical section of increasing diameter and leads into the third section 52 which has a constant diameter of about 98% of the diameter of the orifice 46.
  • the secondary, conical valve head 54 is formed at the inner end of the section 52 to cooperate with the secondary valve seat, i.e. the rim of the orifice 46.
  • the bleed screw is screwed fully into the valve body and the head is then formed, in this embodiment, by cold pressing.
  • the section 52 When the threads 14 and 16 are on the point of being disengaged, the section 52 is located within the orifice 46 and severely restricts the flow of gas or water through the orifice.
  • the length of the valve stem 24 is such that the threads 14 and 16 can be completely disengaged before the secondary valve head engages its seat, the distance between the valve heads 20 and 54 being about 20% greater than the maximum engaged length of the threads 14 and 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)
  • Temperature-Responsive Valves (AREA)
EP00301123A 1999-02-19 2000-02-14 Bout de sein Withdrawn EP1030088A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9903682 1999-02-19
GBGB9903682.4A GB9903682D0 (en) 1999-02-19 1999-02-19 Fully captive air bleed valve screws,fittings & radiators
GB9917436 1999-03-27
GBGB9917436.9A GB9917436D0 (en) 1999-02-19 1999-07-23 Bleed valve

Publications (1)

Publication Number Publication Date
EP1030088A1 true EP1030088A1 (fr) 2000-08-23

Family

ID=26315152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00301123A Withdrawn EP1030088A1 (fr) 1999-02-19 2000-02-14 Bout de sein

Country Status (2)

Country Link
EP (1) EP1030088A1 (fr)
GB (1) GB2346950B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006117546A1 (fr) * 2005-05-03 2006-11-09 Martin O'donnell Ensemble de valve
CN107994182A (zh) * 2017-12-07 2018-05-04 河北银隆新能源有限公司 一种方形电池及电池泄压阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0600347D0 (en) * 2006-01-10 2006-02-15 Rick Dennis Vent pin and plug
GB2464835B (en) * 2008-11-03 2013-12-18 Kevin Hester A bleed valve

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2212112A1 (de) * 1972-03-13 1973-09-20 Schmitz Kuehler Baierbrunn Entlueftungsvorrichtung
FR2394003A1 (fr) * 1977-06-08 1979-01-05 Larga Spa Soupape d'evacuation d'air, en particulier pour la purge des bulles d'air des chaudieres et installations de chauffage operant sous pression
EP0062841A1 (fr) * 1981-04-10 1982-10-20 Anton Hummel GmbH Metallwarenfabrik Purgeur d'air
CH641885A5 (en) * 1979-07-24 1984-03-15 Rolf Keller Valve for bleeding radiators
EP0153999A1 (fr) * 1983-12-23 1985-09-11 Anton Hummel GmbH Metallwarenfabrik Soupape d'évacuation, en particulier pour la ventilation de systèmes de chauffage
GB2231389A (en) * 1989-03-17 1990-11-14 Robert John Bailey Valve
DE3936771A1 (de) * 1989-11-04 1991-05-08 Siegfried Boehnisch Verteilventil
DE19500062A1 (de) * 1995-01-03 1996-07-11 Norbert Scherer Entlüftungsventil
DE29715018U1 (de) * 1997-08-22 1997-10-30 Vogt Klemens Universal Entlüftungsventil ( für horizontalen u. vertikalen Einsatz)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931376A (en) * 1956-01-03 1960-04-05 Joseph A Hendel Hygroscopic valve construction
US3948481A (en) * 1974-05-02 1976-04-06 The Weatherhead Company Draincock for automotive cooling system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2212112A1 (de) * 1972-03-13 1973-09-20 Schmitz Kuehler Baierbrunn Entlueftungsvorrichtung
FR2394003A1 (fr) * 1977-06-08 1979-01-05 Larga Spa Soupape d'evacuation d'air, en particulier pour la purge des bulles d'air des chaudieres et installations de chauffage operant sous pression
CH641885A5 (en) * 1979-07-24 1984-03-15 Rolf Keller Valve for bleeding radiators
EP0062841A1 (fr) * 1981-04-10 1982-10-20 Anton Hummel GmbH Metallwarenfabrik Purgeur d'air
EP0153999A1 (fr) * 1983-12-23 1985-09-11 Anton Hummel GmbH Metallwarenfabrik Soupape d'évacuation, en particulier pour la ventilation de systèmes de chauffage
GB2231389A (en) * 1989-03-17 1990-11-14 Robert John Bailey Valve
DE3936771A1 (de) * 1989-11-04 1991-05-08 Siegfried Boehnisch Verteilventil
DE19500062A1 (de) * 1995-01-03 1996-07-11 Norbert Scherer Entlüftungsventil
DE29715018U1 (de) * 1997-08-22 1997-10-30 Vogt Klemens Universal Entlüftungsventil ( für horizontalen u. vertikalen Einsatz)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006117546A1 (fr) * 2005-05-03 2006-11-09 Martin O'donnell Ensemble de valve
CN107994182A (zh) * 2017-12-07 2018-05-04 河北银隆新能源有限公司 一种方形电池及电池泄压阀

Also Published As

Publication number Publication date
GB0003181D0 (en) 2000-04-05
GB2346950A (en) 2000-08-23
GB2346950B (en) 2001-04-11

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