GB1387902A - Closing device for a pneumatic system - Google Patents

Closing device for a pneumatic system

Info

Publication number
GB1387902A
GB1387902A GB1051672A GB1051672A GB1387902A GB 1387902 A GB1387902 A GB 1387902A GB 1051672 A GB1051672 A GB 1051672A GB 1051672 A GB1051672 A GB 1051672A GB 1387902 A GB1387902 A GB 1387902A
Authority
GB
United Kingdom
Prior art keywords
bag
aperture
pipe
sheets
opening
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
GB1051672A
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.)
PRONAL SA
Original Assignee
PRONAL SA
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 PRONAL SA filed Critical PRONAL SA
Publication of GB1387902A publication Critical patent/GB1387902A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Bag Frames (AREA)
  • Sealing Devices (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

1387902 Valves SOC ANON PRONAL 7 March 1972 [12 March 1971] 10516/72 Heading F2V [Also in Division G3] A closing device. 12 for a pneumatic system comprises a bag or bladder defined by two deformable fluid tight sheets 13, 15 with a closing face co-operable with an annular seat 18 adjacent an aperture and an orifice in communication with the exterior medium or the pneumatic system so that pressure variations in the bag or bladder result in its expansion or contraction and the opening and closing of the aperture. The bag which is preferably circular and made of coated fabric, is provided with ribs for separating the two sheets in the region of the orifice. The two sheets are secured at their edges by a V-section member of rubberized fabric. In Fig. 1 the invention is incorporated in the inlet of a fan, as shown with the fan off and the aperture closed. Switching on of the fan causes a decrease in the pressure in the bag and hence the opening of the aperture. In Fig. 5 the device is adapted as a relief valve by incorporating a pilot valve 51 comprising a gravity controlled closure member 54 and a calibrated washer 58 in the pipe 45 to create a preferential flow path through the pipe 48. In the event of excess pressure in the pipe 47 opening the valve 51, air is preferentially exhausted from the bag and the force 15 moves away from seat 18 and the air is able to escape via orifices 61 in ring 11. (For Figures see next page.)
GB1051672A 1971-03-12 1972-03-07 Closing device for a pneumatic system Expired GB1387902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7108797A FR2129063A5 (en) 1971-03-12 1971-03-12

Publications (1)

Publication Number Publication Date
GB1387902A true GB1387902A (en) 1975-03-19

Family

ID=9073470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1051672A Expired GB1387902A (en) 1971-03-12 1972-03-07 Closing device for a pneumatic system

Country Status (9)

Country Link
AT (1) AT308952B (en)
CA (1) CA963350A (en)
CH (1) CH555021A (en)
DD (1) DD96307A5 (en)
DE (1) DE2210955A1 (en)
ES (1) ES400987A1 (en)
FR (1) FR2129063A5 (en)
GB (1) GB1387902A (en)
IT (1) IT957252B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008788A2 (en) * 1998-12-09 2000-06-14 Air Control Industries Ltd Blown air apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3641433A1 (en) * 1986-12-04 1988-06-09 Mct Brattberg Kabeldurchfuehru Blocking device for an air duct
DE29711777U1 (en) * 1997-07-06 1997-10-23 Straeter Fritz Gmbh Locking mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008788A2 (en) * 1998-12-09 2000-06-14 Air Control Industries Ltd Blown air apparatus
GB2344617A (en) * 1998-12-09 2000-06-14 Air Control Ind Ltd Blown air apparatus with control valve
EP1008788A3 (en) * 1998-12-09 2001-03-28 Air Control Industries Ltd Blown air apparatus

Also Published As

Publication number Publication date
CA963350A (en) 1975-02-25
DD96307A5 (en) 1973-03-12
ES400987A1 (en) 1975-02-01
IT957252B (en) 1973-10-10
FR2129063A5 (en) 1972-10-27
CH555021A (en) 1974-10-15
DE2210955A1 (en) 1972-09-21
AT308952B (en) 1973-07-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees