GB896722A - An improved arrangement for preventing the inflow of outside air through outer doors and similar openings by means of a curtain of air - Google Patents

An improved arrangement for preventing the inflow of outside air through outer doors and similar openings by means of a curtain of air

Info

Publication number
GB896722A
GB896722A GB1348/61A GB134861A GB896722A GB 896722 A GB896722 A GB 896722A GB 1348/61 A GB1348/61 A GB 1348/61A GB 134861 A GB134861 A GB 134861A GB 896722 A GB896722 A GB 896722A
Authority
GB
United Kingdom
Prior art keywords
air
air curtain
curtain
suction chamber
vanes
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
GB1348/61A
Inventor
Berth Atle Wikstrom
Gunnar Wilhelm Wikstrom
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.)
SNA Europe Industries AB
Original Assignee
Bahco 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 Bahco AB filed Critical Bahco AB
Priority to GB1348/61A priority Critical patent/GB896722A/en
Publication of GB896722A publication Critical patent/GB896722A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/755—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for cyclical variation of air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity

Abstract

896,722. Air curtains. BAHCO A.B. Jan. 12, 1961, No. 1348/6 Class 137. An air curtain is formed in front of an opening such as a door between an inlet 4 provided with adjustable guide vanes 5 located along the upper edge 1 of the door opening and a suction chamber 7 located in the floor 2 provided with a grid 6. A duct 8 provided with a fan or fans (not shown) and a heating means 9 connects the suction chamber 7 with an inlet space 3 containing the inlet 4. Temperature sensitive means such as 10 and 11 actuate a relay device 14 which drives a motor 16, which in turn, controls the adjustment of the vanes 5. Should the air pressure at the outside of the air curtain of warm air rise, due say to an increase in wind pressure, the air curtain will be bent inwards and the outer temperature sensitive means 10 will be exposed to air at a lower temperature. The relay 14 is then actuated due to the temperature difference between the temperature sensitive means 10 and 11 and consequently the vanes 5 adjust the direction of flow of the air curtain until both temperature sensitive means lie within the air curtain width at their level. In three other embodiments, one of which is shown in Fig. 5, the width of the suction chamber 7 at right angles to the door is greater than that of the air curtain meeting the floor 2. As a result of this, any room air which is entrained and ejected at the inside of the air curtain and which could cause a draught along the floor 2 of the room, is also drawn into the suction chamber 7. A vent 17 with a regulating valve 18 is therefore provided in the duct 8 on the pressure side of the fan or fans, so that the volume of air passing through the inlet 4 does not fluctuate in quantity. Alternatively a separate fan can be used to exhaust the room air through a separate duct. The quantity of injected air may also be varied with the control of the vanes 5.
GB1348/61A 1961-01-12 1961-01-12 An improved arrangement for preventing the inflow of outside air through outer doors and similar openings by means of a curtain of air Expired GB896722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1348/61A GB896722A (en) 1961-01-12 1961-01-12 An improved arrangement for preventing the inflow of outside air through outer doors and similar openings by means of a curtain of air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1348/61A GB896722A (en) 1961-01-12 1961-01-12 An improved arrangement for preventing the inflow of outside air through outer doors and similar openings by means of a curtain of air

Publications (1)

Publication Number Publication Date
GB896722A true GB896722A (en) 1962-05-16

Family

ID=9720440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1348/61A Expired GB896722A (en) 1961-01-12 1961-01-12 An improved arrangement for preventing the inflow of outside air through outer doors and similar openings by means of a curtain of air

Country Status (1)

Country Link
GB (1) GB896722A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330966A1 (en) * 1975-11-06 1977-06-03 Jansson Bror DEVICE PREVENTING THE PASSAGE OF AIR THROUGH AN OPENING BETWEEN TWO PREMISES OR SPACES
FR2557275A1 (en) * 1983-12-23 1985-06-28 Zambolin Marco METHOD FOR REMOVING COLD AIR INFILTRATIONS THROUGH OPENINGS SUCH AS MAIN ENTRANCES, INDUSTRIAL BUILDINGS ESPECIALLY
DE19542714A1 (en) * 1995-11-16 1997-05-22 Ttl Tuer & Torluftschleier Luf Air current blocking in room against other regions communicating by open door or gate
US8469783B2 (en) 2006-01-16 2013-06-25 Halton Oy Supply air terminal device and method for regulating the airflow rate
CN114288738A (en) * 2022-01-12 2022-04-08 郑州人民医院(郑州人民医院医疗管理中心) Filter element replacing device and method for endoscope cleaning equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330966A1 (en) * 1975-11-06 1977-06-03 Jansson Bror DEVICE PREVENTING THE PASSAGE OF AIR THROUGH AN OPENING BETWEEN TWO PREMISES OR SPACES
FR2557275A1 (en) * 1983-12-23 1985-06-28 Zambolin Marco METHOD FOR REMOVING COLD AIR INFILTRATIONS THROUGH OPENINGS SUCH AS MAIN ENTRANCES, INDUSTRIAL BUILDINGS ESPECIALLY
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
DE19542714A1 (en) * 1995-11-16 1997-05-22 Ttl Tuer & Torluftschleier Luf Air current blocking in room against other regions communicating by open door or gate
US8469783B2 (en) 2006-01-16 2013-06-25 Halton Oy Supply air terminal device and method for regulating the airflow rate
CN114288738A (en) * 2022-01-12 2022-04-08 郑州人民医院(郑州人民医院医疗管理中心) Filter element replacing device and method for endoscope cleaning equipment
CN114288738B (en) * 2022-01-12 2023-02-07 郑州人民医院(郑州人民医院医疗管理中心) Filter element replacing device and method for endoscope cleaning equipment

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