GB760890A - Improved device for producing a room-closing air-curtain - Google Patents

Improved device for producing a room-closing air-curtain

Info

Publication number
GB760890A
GB760890A GB31544/54A GB3154454A GB760890A GB 760890 A GB760890 A GB 760890A GB 31544/54 A GB31544/54 A GB 31544/54A GB 3154454 A GB3154454 A GB 3154454A GB 760890 A GB760890 A GB 760890A
Authority
GB
United Kingdom
Prior art keywords
air
curtain
distributer
gauge
chamber
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
GB31544/54A
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.)
Sifrag Spezialapp Bau & Ingeni
Original Assignee
Sifrag Spezialapp Bau & Ingeni
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 Sifrag Spezialapp Bau & Ingeni filed Critical Sifrag Spezialapp Bau & Ingeni
Priority to ES0224761A priority Critical patent/ES224761A1/en
Publication of GB760890A publication Critical patent/GB760890A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

760,890. Air curtains. SIFRAG SPEZIALAPPARATEBAU & INGENIEURBUREAU FREI AKT.-GES. Nov. 1, 1954 [Nov. 3, 1953; July 26, 1954; July 26, 1954], No. 31544/54. Class 137 An air curtain 7, Fig. 1, which is used instead of a door to separate two rooms or provided at the entry or exit of a building such as a warehouse, has automatic means for controlling the curtain. As shown an air outlet chamber 4 having an outlet opening 5 provided with an adjustable distributer 6 is mounted above a grid 2 which is set in the floor 1 and covers an air inlet chamber 3. A fan 11 draws the air from chamber 3 through strainer 21 and delivers it to chamber 4 through heater 14 and pipe 12, the heater 14 being controlled by a device 13. A pressure gauge 10 is placed so that during normal operation the air flow passes in front of it. If, however, the air curtain 7 is deflected inwardly, the gauge 10 is affected and through control mechanism 9 and servomotor 8 the distributer 6 is tilted outwaidly to alter the direction of the air stream. A differential pressure gauge 17 having feelers 15, 16, responds to any difference of pressure between the spaces separated by the curtain 7, and causes the servomotor 18 to increase the speed of motor 19 driving fan 11 to increase the air speed and thus stabilize the curtain. In a modification the gauge 10 controls motor 19 and gauge 17 controls the distributer 6. In a further form two pressure gauges are provided combined with electric control means so that the aircurtain is always located between the gauges. The air-distributer may consists of hollow metal bodies 23, Fig. 4, each of which has a cross-section in the form of an isosceles triangle, and has a number of guide plates 27 of trapezoidal shape secured thereto. The bodies 23 are pivoted at 28 near their lower ends to an angle iron 24 and at their tops have projections 25 pivoted to an actuating rod 26. Guide plates may be provided above or below the distributer.
GB31544/54A 1953-11-03 1954-11-01 Improved device for producing a room-closing air-curtain Expired GB760890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0224761A ES224761A1 (en) 1954-11-01 1955-11-02 A procedure and apparatus for the manufacture of molds, nuclei and similar for the foundry (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH760890X 1953-11-03

Publications (1)

Publication Number Publication Date
GB760890A true GB760890A (en) 1956-11-07

Family

ID=4534674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31544/54A Expired GB760890A (en) 1953-11-03 1954-11-01 Improved device for producing a room-closing air-curtain

Country Status (1)

Country Link
GB (1) GB760890A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955521A (en) * 1957-07-26 1960-10-11 New Castle Products Inc Air screen door
US3018712A (en) * 1958-05-12 1962-01-30 Honeywell Regulator Co Control system for a room closing air curtain
GB2151349A (en) * 1983-12-23 1985-07-17 Marco Zambolin An air curtain for eliminating the infiltration of cold air through entrances of industrial buildings
GB2397116A (en) * 2003-01-14 2004-07-14 Clark Door Ltd Conditioned vestibule for a cold storage doorway

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955521A (en) * 1957-07-26 1960-10-11 New Castle Products Inc Air screen door
US3018712A (en) * 1958-05-12 1962-01-30 Honeywell Regulator Co Control system for a room closing air curtain
GB2151349A (en) * 1983-12-23 1985-07-17 Marco Zambolin An air curtain for eliminating the infiltration of cold air through entrances of industrial buildings
GB2397116A (en) * 2003-01-14 2004-07-14 Clark Door Ltd Conditioned vestibule for a cold storage doorway
GB2397116B (en) * 2003-01-14 2006-05-24 Clark Door Ltd Conditioned vestibule for a cold storage doorway

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