US3392657A - Air inlet device - Google Patents

Air inlet device Download PDF

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Publication number
US3392657A
US3392657A US612532A US61253267A US3392657A US 3392657 A US3392657 A US 3392657A US 612532 A US612532 A US 612532A US 61253267 A US61253267 A US 61253267A US 3392657 A US3392657 A US 3392657A
Authority
US
United States
Prior art keywords
air
opening
plate
slot
room
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 - Lifetime
Application number
US612532A
Other languages
English (en)
Inventor
Larkfeldt Birger
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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 Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of US3392657A publication Critical patent/US3392657A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/18—Work bench
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/29—Air curtains

Definitions

  • the present invention relates to a device for supplying air to rooms, and is particularly adapted for use in operating rooms.
  • the present invention is an improvement upon the device disclosed in US. Patent Number 3,150,584.
  • the US. Patent Number 3,150,584 discloses an arrangement for ventilating and air conditioning operat ing rooms and similar localities where the air is injected diagonally through the rooms. The air is delivered in the corner between the ceiling and one wall of the room "and is exhausted at the floor adjacent the opposite wall.
  • the supply opening extends the length of the room as a continuous row of a plurality of closely-spaced supply openings along the wall and is covered by a perforated screen. This arrangement provides the air with the same velocity and direction from all of the supply openings.
  • a primary object of the present invention is to provide a substantially-diagonal air flow through the room without exceeding the allowed value of the air velocity. This is obtained by a distributing duct having an outlet opening and a perforated plate having a shape correspondi-ng to the opening. By displacing the perforated plate in one direction or the other into pantial registry with the opening to form an open slot at one edge or the other of the opening, the air flow through the slot will depend on the width of the slot. Different air flows result in different throws of the air jet, which thus canbe given the necessary guidance in order to maintain substantiallyediagonal air flow within every part of the operating room. Also the direction of the air jet is determined by the width of the slot.
  • the slot is formed between two surfaces substantially perpendicular to each other, one of the surfaces being a flange parallel to the air flow and the other being of the plate which is substantially perpendicular to the air flow.
  • the slot is wide, the air current is not influenced by the plate, but the narrower the slot 3,392,657 Patented July 16, 1968 is, the more the slot influences the air current, and when the width of the slot is about 3 mm. or below, the plate will guide the air in the direction of the plate side.
  • the air guidance dominates from the flange surface parallel to the air current.
  • FIG. 1 is a cross section through a device according to the invention
  • FIG. 2 is a front view of the air supply system
  • FIG. 3 is a sectional view through a room embodying a system according to FIG. 2.
  • an inlet duct 1 injects air into a distributing duct 2, which is provided with rectangular openings entirely or partly covered by perforated plates 3.
  • Each plate is adjustably arranged in guide rails 4, which at the same time, serve to retain the plate 3 in the desired position.
  • the plate can easily be pushed up or down in front of the opening so that a slot 6 is formed either at the top or at the bottom edge, when the end of the plate is displaced beyond one or the other end edge of the opening.
  • the air supply device according to the invention can suitably be used for ventilating an operating room 7.
  • the air supply openings are here arranged in the corner between the side Wall and the ceiling of the operating room in the form of a continuous row, with a perforated plate for each opening.
  • An air discharge opening 9 is provided in the diagonally-opposite corner of the room.
  • a device for directing and supplying air into a room comprising a distributing duct provided with an air intake opening and at least one rectangular outlet opening, a perforated plate having a length and width corresponding to the length and width of said opening for covering said opening and affording air flow therethrough, parallel guiding rails disposed on opposite sides of said outlet opening to slidably support said perforated plate for longitudinal movement along the plane of said outlet opening in both directions from a position in full registry with said opening to positions in partial registry with said opening, and handle means on said plate whereby said plate can be slidably pushed up or down to obtain a free outlet slot of variable width between either one of the ends of the plate and the adjacent edge of the opening, the width of the slot determining the proportions of the supplied air flowing through said slot and said plate respectively.
  • a device wherein said dist-ributing duct is disposed along on side wall of the room close to the ceiling and has a free wall facing the room provided with a plurality of outlet openings arranged side-by-side in a row, and each covered by a separate perforated slidable plate.
  • a device wherein said duct it disposed along one side wall of the room close to the ceiling and has a free wall facing the room disposed diagonally to said side wall and ceiling, said opening being disposed in said free wall.
  • a device wherein said duct has flanges projecting inwardly from the upper and lower edges of said opening substantially parallel to the air flow through said opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Ventilation (AREA)
US612532A 1966-02-03 1967-01-30 Air inlet device Expired - Lifetime US3392657A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1374/66A SE310246B (fi) 1966-02-03 1966-02-03

Publications (1)

Publication Number Publication Date
US3392657A true US3392657A (en) 1968-07-16

Family

ID=20258081

Family Applications (1)

Application Number Title Priority Date Filing Date
US612532A Expired - Lifetime US3392657A (en) 1966-02-03 1967-01-30 Air inlet device

Country Status (12)

Country Link
US (1) US3392657A (fi)
AT (1) AT270144B (fi)
BE (1) BE693357A (fi)
CH (1) CH457774A (fi)
DE (1) DE1679474B1 (fi)
ES (1) ES336278A1 (fi)
FI (1) FI47606C (fi)
FR (1) FR1516238A (fi)
GB (1) GB1176422A (fi)
NL (1) NL152074B (fi)
NO (1) NO115924B (fi)
SE (1) SE310246B (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631788A (en) * 1969-03-19 1972-01-04 Svenska Flaektfabriken Ab Supply air device for injection of perferably cold ventilation air
US3762301A (en) * 1971-05-11 1973-10-02 Carrier Engineering Co Ltd Air distribution apparatus
FR2701758A1 (fr) * 1993-02-19 1994-08-26 Climatherm Sa Procédé de climatisation à déplacement d'air dans un volume et installation pour la mise en Óoeuvre du dit procédé.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE378663B (fi) * 1973-01-16 1975-09-08 Ar Ventilation Ab

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2115567A (en) * 1936-06-24 1938-04-26 American Blower Corp Air conditioning unit
AT226916B (de) * 1960-09-16 1963-04-25 Maimer & Co Kamintuerenbau J Dunstabsaugevorrichtung für Küchenherde od. dgl., insbesondere von Haushaltsküchen
US3150584A (en) * 1961-09-04 1964-09-29 Svenska Flaektfabriken Ab Air-conditioning arrangement for operating rooms
US3158457A (en) * 1962-05-14 1964-11-24 Willis J Whitfield Ultra-clean room

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2115567A (en) * 1936-06-24 1938-04-26 American Blower Corp Air conditioning unit
AT226916B (de) * 1960-09-16 1963-04-25 Maimer & Co Kamintuerenbau J Dunstabsaugevorrichtung für Küchenherde od. dgl., insbesondere von Haushaltsküchen
US3150584A (en) * 1961-09-04 1964-09-29 Svenska Flaektfabriken Ab Air-conditioning arrangement for operating rooms
US3158457A (en) * 1962-05-14 1964-11-24 Willis J Whitfield Ultra-clean room

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631788A (en) * 1969-03-19 1972-01-04 Svenska Flaektfabriken Ab Supply air device for injection of perferably cold ventilation air
US3762301A (en) * 1971-05-11 1973-10-02 Carrier Engineering Co Ltd Air distribution apparatus
FR2701758A1 (fr) * 1993-02-19 1994-08-26 Climatherm Sa Procédé de climatisation à déplacement d'air dans un volume et installation pour la mise en Óoeuvre du dit procédé.

Also Published As

Publication number Publication date
NO115924B (fi) 1968-12-30
BE693357A (fi) 1967-07-03
ES336278A1 (es) 1968-06-01
AT270144B (de) 1969-04-10
FI47606C (fi) 1974-01-10
FI47606B (fi) 1973-10-01
NL152074B (nl) 1977-01-17
NL6701689A (fi) 1967-08-04
DE1679474B1 (de) 1971-08-26
GB1176422A (en) 1970-01-01
SE310246B (fi) 1969-04-21
CH457774A (de) 1968-06-15
FR1516238A (fr) 1968-03-08

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