FR2232720A1 - Device to maintain constant ventilator gas flow - has spring to balance effect of dynamic press. on blocking disc - Google Patents

Device to maintain constant ventilator gas flow - has spring to balance effect of dynamic press. on blocking disc

Info

Publication number
FR2232720A1
FR2232720A1 FR7320595A FR7320595A FR2232720A1 FR 2232720 A1 FR2232720 A1 FR 2232720A1 FR 7320595 A FR7320595 A FR 7320595A FR 7320595 A FR7320595 A FR 7320595A FR 2232720 A1 FR2232720 A1 FR 2232720A1
Authority
FR
France
Prior art keywords
disc
gas flow
passage
spring
maintain constant
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.)
Granted
Application number
FR7320595A
Other languages
French (fr)
Other versions
FR2232720B3 (en
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.)
Engie SA
Original Assignee
Gaz de France 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 Gaz de France SA filed Critical Gaz de France SA
Priority to FR7320595A priority Critical patent/FR2232720A1/en
Publication of FR2232720A1 publication Critical patent/FR2232720A1/en
Application granted granted Critical
Publication of FR2232720B3 publication Critical patent/FR2232720B3/fr
Granted 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • 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
    • F24F11/75—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 maintaining constant air flow rate or air velocity

Abstract

Control valve to maintain essentially constant gas flow rates, within a given range of upstream and downstream pressures. The valve consists of a passage of varying circular cross-section, formed by cylindrical and conical sections, and an axially moving disc which progressively blocks the passage. The disc is mounted on a central shaft which is pivoted on a transverse strip. The transverse strip is itself pivoted round an axis essentially tangential to the flow passage. The effect of dynamic gas pressure on the disc tends to close the passageway, and this is resisted by a balancing spring acting on the pivoting strip. The balance of these forces gives essentially contrast flow through the valve.
FR7320595A 1973-06-06 1973-06-06 Device to maintain constant ventilator gas flow - has spring to balance effect of dynamic press. on blocking disc Granted FR2232720A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7320595A FR2232720A1 (en) 1973-06-06 1973-06-06 Device to maintain constant ventilator gas flow - has spring to balance effect of dynamic press. on blocking disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7320595A FR2232720A1 (en) 1973-06-06 1973-06-06 Device to maintain constant ventilator gas flow - has spring to balance effect of dynamic press. on blocking disc

Publications (2)

Publication Number Publication Date
FR2232720A1 true FR2232720A1 (en) 1975-01-03
FR2232720B3 FR2232720B3 (en) 1976-05-28

Family

ID=9120591

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7320595A Granted FR2232720A1 (en) 1973-06-06 1973-06-06 Device to maintain constant ventilator gas flow - has spring to balance effect of dynamic press. on blocking disc

Country Status (1)

Country Link
FR (1) FR2232720A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1840476A3 (en) * 2006-03-31 2008-06-11 NuAire Limited Air flow control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1840476A3 (en) * 2006-03-31 2008-06-11 NuAire Limited Air flow control apparatus

Also Published As

Publication number Publication date
FR2232720B3 (en) 1976-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse