GB1366508A - Air flow control means - Google Patents

Air flow control means

Info

Publication number
GB1366508A
GB1366508A GB3639971A GB3639971A GB1366508A GB 1366508 A GB1366508 A GB 1366508A GB 3639971 A GB3639971 A GB 3639971A GB 3639971 A GB3639971 A GB 3639971A GB 1366508 A GB1366508 A GB 1366508A
Authority
GB
United Kingdom
Prior art keywords
pressure
actuator
plate
chamber
flow
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
GB3639971A
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of GB1366508A publication Critical patent/GB1366508A/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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2007—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member specially adapted operating means therefor
    • 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
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2021—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member with a plurality of valve members
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0173—Control of flow without auxiliary power using pivoting sensing element acting as a valve mounted within the flow-path

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
  • Control Of Fluid Pressure (AREA)
  • Flow Control (AREA)

Abstract

1366508 Air flow control dampers DANFOSS AS 3 Aug 1971 [3 Aug 1970 29 Jan 1971] 36399/71 Heading F4V [Also in Divisions F1 F2 and G3] An air-flow control valve, Fig. 5, for use in air-conditioning systems comprises a rigid control plate 24 rectilinearly or angularly movable to vary, e.g. the flow area through an orifice 23, the plate 24 being movable by a flexible chamber actuator comprising at least one inflatable flat bag 1, Fig. 4, mounted with the outer flat portions thereof in contact with the plate 24 and a fixed member 2. As shown the plate 24 is pivotable about an axis 7 to control the flow of air from an inlet chamber 21 to an outlet chamber 22. Movement of the actuator is dependent on the pressure difference across the bag(s). The bag(s) are subjected on the outside to the outlet chamber pressure and on the inside to a pressure in a line 31, 32, 6 connected to the inlet chamber 21 and having a discharge outlet controlled by a bimetal actuated obturating member 30. In Fig. 6, the actuator is mounted in a box 12, the pressure acting on the outside of the bags being taken from a static pressure tapping 6i and the pressure acting on the inside being taken from a total pressure tapping 6. Thus the actuator is responsive to the dynamic pressure and is said to control the plate 24 such that a constant air flow is produced even though the pressure in the inlet 21 varies. The actual air flow is determined by a manually adjustable flap 16 or automatically in dependence of a pilot pressure (Px) admitted to a further actuator (1<SP>1</SP>) which either affects the loading applied to the main actuator, Fig. 7 (not shown), or controls the flap (24<SP>11</SP>), Fig. 9 (not shown). In further embodiments, Figs. 10 and 11 (not shown), an actuator having its bags 1 urged towards a collapsed condition by a spring (8), operates through linkwork a semi-cylindrical or sector shaped valve member (24a) controlling the proportionate flow from a pair of inlet chambers (21) to a single outlet or mixing chamber (22).
GB3639971A 1970-08-03 1971-08-03 Air flow control means Expired GB1366508A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU61463 1970-08-03
LU62512 1971-01-29

Publications (1)

Publication Number Publication Date
GB1366508A true GB1366508A (en) 1974-09-11

Family

ID=26640060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3639971A Expired GB1366508A (en) 1970-08-03 1971-08-03 Air flow control means

Country Status (5)

Country Link
BE (1) BE770837A (en)
DE (1) DE2166982C3 (en)
GB (1) GB1366508A (en)
IT (1) IT940990B (en)
NL (1) NL7110638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273960A (en) * 1993-01-04 1994-07-06 Target Engineering Inflatable tube for sealing or actuating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273960A (en) * 1993-01-04 1994-07-06 Target Engineering Inflatable tube for sealing or actuating

Also Published As

Publication number Publication date
IT940990B (en) 1973-02-20
DE2166982C3 (en) 1979-10-11
NL7110638A (en) 1972-02-07
DE2166982B2 (en) 1979-02-15
DE2137492B2 (en) 1977-06-16
DE2166982A1 (en) 1977-09-15
BE770837A (en) 1972-02-02
DE2137492A1 (en) 1972-02-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee