US3641915A - Automatic air diffuser and regulator - Google Patents

Automatic air diffuser and regulator Download PDF

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Publication number
US3641915A
US3641915A US63554A US3641915DA US3641915A US 3641915 A US3641915 A US 3641915A US 63554 A US63554 A US 63554A US 3641915D A US3641915D A US 3641915DA US 3641915 A US3641915 A US 3641915A
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US
United States
Prior art keywords
strip
passage
diffuser
automatic air
blades
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
US63554A
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English (en)
Inventor
Pierre Jardinier
Jack Simonnot
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.)
ALDES
Original Assignee
ALDES
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 ALDES filed Critical ALDES
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Publication of US3641915A publication Critical patent/US3641915A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • G05D7/0106—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
    • G05D7/012—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule the sensing element being deformable and acting as a valve
    • 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
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F2013/1493—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using an elastic membrane

Definitions

  • ABSTRACT A device for regulating and diffusing fresh air introduced into rooms, notably rooms of dwellings and the device comprises a resilient strip positioned across a fresh air passage in an outer wall.
  • the resilient strip is responsive to air pressure differential generated in the passage and the strip has one edge fastened to the wall of the passage and a free edge remote from the fastened edge with lugs formed at spaced intervals along the free edge adapted to slidably engage a surface lining in the wall.
  • a set of fixed blades for diffusing the incoming airstream are mounted in the passage end having leading edges disposed adjacent the fastened edge and shaped to constitute a bearing support for modifying the curvature of the strip according to the pressure differential acting upon said strip and thus cause the incoming airstream to have a substantial input in spite of wide variations in the incoming airstream AUTOMATIC AIR DIFFUSER AND REGULATOR BACKGROUND OF THE INVENTION
  • This invention relates to an air input diffuser and regulator adapted to be fitted across an air inlet passage or aperture formed in an outer wall of a room to be ventilated.
  • some of these devices comprise essentially a shutter rigid with a shaft and adapted, in the case of pressure differential, to reduce the free passage area through a duct or casing, the shutter being normally urged to a predetermined position, in order to maintain a substantially constant air input, by a torque applied to the shaft of said shutter.
  • This invention is concerned primarily with an automatic air input difl'user and regulator responsive to a variable negative or positive pressure, and comprising essentially:
  • a resilient strip fastened transversely along one of its major edges for adjusting, under the influence of the airstream, the cross-sectional passage area available to the airstream by elastic deformation of said strip, the resiliency of which is adapted to counteract the effects of the airstream and to constantly urge the strip to its open position.
  • the leading edges of the fixed diffusion blades together constitute a suitably shaped bearing support engageable by a portion of the resilient strip responsive to the pressure of the airstream; the contour of the blades being such as to impose a predetermined deformation on the strip subject to variable air pressures such that the air throughput in the remaining free cross-sectional passage area remains substantially constant.
  • one or more free edges of said strip are formed with at least one lug the free end of which is adapted, under the influence of a predetermined air pressure differential to engage a surface, and to slide on said surface as a consequence of elastic deformation of said strip from pressure differences greater than said predetermined air pressure differential.
  • the device of this invention which comprises a relatively great number of lugs formed along the major free edge of the strip opposite the fixed edge thereof, when an airstream corresponding to a relatively great pressure differential is applied in the passage, said lugs produce transverse distortions of said free edges so as to preserve openings adjacent said lugs, at spaced intervals, in said passage.
  • the thickness and composition of the resilient strip and the dimensions and relative spacing of the lugs are a function of the dimensions of the ventilation duct or passage, and also of the pressure difi'erentials likely to prevail on either side of this duct or passage.
  • the resilient strip mounted across the passage is of substantially rectangular configuration and has its free major edge formed with relatively wide notches forming the lugs therebetween, this strip being obtained by cutting a plastic sheet whose elasticity and thickness are consistent with the characteristics of the air or ventilation passage to provide a predetennined air input under pressure difl'erentials lying within a predetermined range.
  • FIG. 1 is a cross-sectional view of an airstream input stabilizing device according to invention
  • FIG. 2 is a plan view of the stabilizing device in FIG. 1;
  • FIGS. 3 and 4 are sectional views similar to FIG. I for facilitating the understanding of the mode of operation of the device.
  • FIG. 5 is a cross-sectional view of a modified embodiment of the device of FIGS. 1 and 2.
  • the device according to this invention comprises a base plate I of rectangular configuration, of which the two side edges are rigid with the edges of a pair of parallel and identical lateral plates 2d and 2g.
  • the end portions of the edges of sideplates 2d and 23 which are opposite to base plate I are also rigid with a crossmember 3 extending parallel to the edges of baseplate l and connected at spaced intervals through deflector blades 4 to base plate I.
  • the leading edges 5 of the blades 4 are all identical and aligned parallel to the baseplate l and crossmember 3.
  • the crossmember 3 has a flat inclined face directed towards the free edge of baseplate 1, and the convex leading edges of blades 4 are connected tangentially to this face of crossmember 3.
  • the crossmember 3 carries studs engageable in corresponding holes formed in a flat bar 6, so as to constitute a pair of jaws for mounting a flat strip 7 therebetween.
  • the free edge of strip 7, i.e., the edge opposite the one clamped between jaws 3, 6, is formed with rectangular lugs 8.
  • Two of the lugs 8 are formed at the ends of the strip and the other lugs are disposed at spaced intervals therebetween.
  • the strip 7 provided with the lugs 8 may be obtained by cutting a relatively thin sheet (for example a sheet having a thickness of the order of 0.75 mm.) of ethylene polyterephthalate, a substance characterized by good flexibility but also by a rigidity sufficient to remain flat when subjected to stress resulting from its inherent weight, in any position in relation to a horizontal plane.
  • a relatively thin sheet for example a sheet having a thickness of the order of 0.75 mm.
  • ethylene polyterephthalate a substance characterized by good flexibility but also by a rigidity sufficient to remain flat when subjected to stress resulting from its inherent weight, in any position in relation to a horizontal plane.
  • each lug 8 and the inclination of crossmember 3 in relation to baseplate I are chosen to cause the free edges of the lugs to normally extend a short distance above the upper face of baseplate 1.
  • a pressure differential ga -p produced on either side of a wall equipped with this device will cause flow of an airstream in the direction of the arrows f, and f tending to press the strip 7 against the leading edges 5 of blades 4.
  • the lugs 8 engage a deflecting wall 9 producing a change substantially at right angles in the direction of flow of the incoming airstream in order to orient the latter and avoid disturbing effect.
  • the shape and inclination of the contact surfaces in relation to the lugs 8 must be such as to permit the sliding engagement between these lugs and the surfaces and prevent any jamming of the free ends of the lugs which might lock them.
  • An automatic air input regulator and diffuser adapted for controlling the delivery of fresh air through an air passage into a room, said regulator and diffuser comprising diffusion blades cooperatively constitute a support for said strip upon deformation of the strip by the pressure of the airstream, said leading edges having a predetermined contour to impose a predetermined elastic deformation on the strip responsive to variable air pressures so that the airflow in the free passage remains substantially constant, at least said resilient strip, comprising at least one flexible resilient lug at the other of said edges thereof adapted, under the influence of a predetermined pressure difierential to contact a wall of the air passage and to slide on said wall due to deformation of the strip caused by pressure differentials greater than said, predetermined pressure differential.
  • An automatic air input regulator and diffuser as claimed in claim 1 comprising a baseplate in said passage facing said lug for slidable passage of the lug thereon, said lug being initially spaced from said baseplate in said open position of said strip.
  • An automatic air input regulator and diffuser as claimed in claim 1 comprising jaw means secured in said air passage and clamping said strip at said one edge thereof.
  • An automatic air input regulator and diffuser as claimed in claim 7 comprising a baseplate secured to said blades and mounted in said air passage for slidable passage of said lug thereon.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
US63554A 1969-08-13 1970-08-13 Automatic air diffuser and regulator Expired - Lifetime US3641915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6927876A FR2030547A6 (enExample) 1969-08-13 1969-08-13

Publications (1)

Publication Number Publication Date
US3641915A true US3641915A (en) 1972-02-15

Family

ID=9039011

Family Applications (1)

Application Number Title Priority Date Filing Date
US63554A Expired - Lifetime US3641915A (en) 1969-08-13 1970-08-13 Automatic air diffuser and regulator

Country Status (5)

Country Link
US (1) US3641915A (enExample)
DE (1) DE2040382C3 (enExample)
ES (1) ES382920A2 (enExample)
FR (1) FR2030547A6 (enExample)
GB (1) GB1290084A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5569078A (en) * 1995-03-06 1996-10-29 Colorado State University Research Foundation Air diffuser having fixed and variable outlet ports
FR2798954A1 (fr) * 1999-09-27 2001-03-30 Tryba Dispositif de ventillation pour un ensemble dormant/ ouvrant(s)
US6383071B1 (en) * 1999-10-21 2002-05-07 Denso Corporation Vehicular air-conditioning apparatus
WO2003060387A1 (en) * 2002-01-15 2003-07-24 Titon Hardware Limited Ventilators

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637452A1 (de) * 1986-11-04 1988-05-19 Pagendarm Beschichtungstechnik Vorrichtung zur durchflusssteuerung
FR2627575B1 (fr) * 1988-02-23 1990-06-29 Barbarin Laurent Bouche d'entree d'air autoreglable pour la ventilation des locaux
NL9100392A (nl) * 1991-03-05 1992-10-01 Tno Zelfregelend ventilatierooster.
DE4340800A1 (de) * 1993-11-25 1995-06-01 Schoettler Lunos Lueftung Zuluftgerät
BE1011044A5 (nl) * 1997-03-14 1999-04-06 Renson N V Voorziening voor het regelen van de luchtstroom in een ventilatie-inrichting.
DE202004004432U1 (de) 2004-03-16 2004-07-15 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Fassadenelement für Zu- und Abluft
DE102017005246A1 (de) 2017-06-01 2018-12-06 Gert Bartholomäus Zuluftelement mit feuchtluftgesteuerter Regulierung der Raumluft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287852A (en) * 1964-05-11 1966-11-29 Louver Mfg Co Inc Louvered ventilator device
US3468239A (en) * 1968-05-16 1969-09-23 Titus Mfg Corp Rectangular air diffusers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH325380A (fr) * 1953-09-02 1957-11-15 Buensod Stacey Inc Dispositif de réglage du débit d'un fluide
FR1163945A (fr) * 1955-11-08 1958-10-02 Buensod Stacey Dispositif de régulation de débit
FR1527197A (fr) * 1967-04-21 1968-05-31 Rech S De Ventilation Et D Aer Diffuseur régulateur de débit destiné, notamment à l'admission d'air frais dans les locaux d'habitation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287852A (en) * 1964-05-11 1966-11-29 Louver Mfg Co Inc Louvered ventilator device
US3468239A (en) * 1968-05-16 1969-09-23 Titus Mfg Corp Rectangular air diffusers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5569078A (en) * 1995-03-06 1996-10-29 Colorado State University Research Foundation Air diffuser having fixed and variable outlet ports
FR2798954A1 (fr) * 1999-09-27 2001-03-30 Tryba Dispositif de ventillation pour un ensemble dormant/ ouvrant(s)
US6383071B1 (en) * 1999-10-21 2002-05-07 Denso Corporation Vehicular air-conditioning apparatus
WO2003060387A1 (en) * 2002-01-15 2003-07-24 Titon Hardware Limited Ventilators

Also Published As

Publication number Publication date
DE2040382A1 (de) 1971-10-28
FR2030547A6 (enExample) 1970-11-13
GB1290084A (enExample) 1972-09-20
DE2040382B2 (de) 1973-04-19
DE2040382C3 (de) 1973-11-15
ES382920A2 (es) 1973-01-01

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