US3026787A - Induction air distributors - Google Patents

Induction air distributors Download PDF

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Publication number
US3026787A
US3026787A US688696A US68869657A US3026787A US 3026787 A US3026787 A US 3026787A US 688696 A US688696 A US 688696A US 68869657 A US68869657 A US 68869657A US 3026787 A US3026787 A US 3026787A
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United States
Prior art keywords
air
air inlet
induction
distributor
inlet
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Expired - Lifetime
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US688696A
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English (en)
Inventor
Combe Albert Judet De La
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Neu SA
Original Assignee
Neu Sa
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Publication date
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    • 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
    • F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect
    • 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
    • F24F13/16—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of parallelly-movable plates

Definitions

  • the mixture of primary and secondary air is then distributed in the space or room subsequent to a complementary treatment, such as heating, cooling, etc.
  • This passage will preferably consist of a spiral volute with a tangential inlet and an outlet port located on one side of the volute. If desired, this volute may comprise on the side opposite to the outlet port a secondary air inlet.
  • the distributor is provided at its periphery with a pipe or like member for discharging the dust particles centrifuged during the passage of the air stream through the apparatus.
  • FIGURE 1 is a diagrammatic elevational view showing a distributor constructed in accordance with the teachings of this invention
  • FIGURE 2 is a section taken upon the line A-A of FIG. 1;
  • FIGURE 3 is a section similar to FIG. 2 but showing a modified embodiment comprising a secondary air inlet
  • FIGURE 4 is a diagrammatical elevational view showing a distributor provided with a pipe for discharging the centrifuged dust particles.
  • the induction air distributor according to the invention consists of a spiral-shaped volute 1 having a tangential air inlet 3,026,787 Patented Mar. 27, 1962 2 and an air outlet port 3 on one of the lateral faces of the volute.
  • the air entering at 2 assumes a rotatory movement about the axis of the volute and as it attains the edge of the outlet port 3 it has a high tangential velocity and is distributed in radial directions in the room as in the case of radial diffusing air vents.
  • an induction air distributing apparatus which does not comprise any duct or nozzle bound by walls between which the primary air flows at high speed and around which the secondary air is carried along by friction at the outlet of this duct or nozzle.
  • this improved device the primary air and the secondary air are caused progressively to contact each other inside the non-partitioned volume, over a large surface and according to a law of the vortex tube, this form of acceleration is characterized by a high efiiciency and has frequently been utilized in many industrial applications.
  • an induction air distributor which may be termed internal induction distributor-is obtained; it requires a moderate energy and therefore its internal pressure loss is kept to a low level so that a device constructed according to this invention operates without any sound insulating means with low-powered ventilators affording a substantial saving in power; moreover, these ventilators have a moderate peripheral velocity and operate noiselessly, so that no costly sound-insulating devices are required for overcoming their inherent loss of pressure.
  • a regulating device consisting for example of a shutter 5 adapted to be displaced in the axial direction by means of a rod 9 solid therewith for adjusting the volume of air taken from the room in which the distributor is mounted.
  • the shutter 5 By moving the shutter 5 from the orifice 4 to the port 3 in a continuous, adjustable manner it is possible to vary at will the input of air flowing through one or the other aperture, so that the inputs entering on both sides may be reduced or mixed in any suitable proportions.
  • the rod 9 carrying the shutter is disposed to slide in a supporting spider 10 mounted in the pipe 11 communicating with the opening 4.
  • a control arm 12 is connected to the rod 9 and laterally extends therefrom and is slidably disposed in an axial slot 13 in the pipe 11.
  • whirl type field of velocities one may use not only the device cited by way of example in the preceding example, which comprises a volute, but also any other system, for example a movable set of blades disposed annularly around the circular air outlet 3, this set of blades being mounted in an inlet case of adequate, non-directional shape, or a rectilinear set of blades disposed at the inlet of the case and adapted to deflect the air stream at the case inlet so as to subsequently create the whirl tube.
  • the device according to this invention is also characterized by the essential advantage that a rotatory movement is imparted to the air therein and that the velocity of the air flow in the vicinity of the outlet port 3 is greater than that at the inlet '2; now, it is known that in a whirling'zone of speed the dust particles, droplets, etc., and, as a rule, all foreign substances, are subjected to a field of centrifugal forces the action of which varies according to the specific weight, size and shape of the particles.
  • a known device called cyclone is based on this principle.
  • An internal-induction air distributor constitutes, due to its specific mode of operation, a cyclone in which the separation of certain dust particles, droplets, soot particles, etc., is obtained, whereby the distributor acts as a dust separator not only as regards the primary air induced in the inlet 2 but also as regards the secondary air taken from the room and induced in the volute 1.
  • the dust particles, droplets and like foreign substances rotating in the whirl tube are gradually forced outwards by the centrifugal force and collected on the outer walls of the volute where they can be gathered in a slot or in any other suitable device, for example a port 6 as shown in FIG. 4. Then the dust-ladden air is expelled through a pipe 7 and either vented or filtered prior to being recycled.
  • An internal-induction air distributor comprising a spiral shaped, internally unobstructed-to-spiral-movementof-air dilfusion body having a peripheral wall formed with a tangential air inlet adapted to be fed by a source of air under pressure and said body having opposing sides, one of said sides being formed with a circular air outlet opening of a smaller diameter than the diameter of the body and the opposing side being formed with a circular central air inlet disposed concentric with and of smaller diameter than the outlet and a shutter positioned in the body tranverse to the axis of the central air inlet between the central air inlet and the air outlet and movable between the central air inlet and the air outlet relative to the air inlet for closing off said air inlet.
  • An internal-induction air distributor comprising a spiral shaped, internally unobstructed-to-spiral-movementof-air diffusion body having a peripheral wall formed with a tangential air inlet adapted to be fed by a source of air under pressure and said body having opposing sides, one of said sides being formed with a circular air outlet opening of a smaller diameter than the diameter of the body and the opposing side being formed with a circular central air inlet disposed concentric with and of smaller diameter than the outlet and a shutter positioned in the body transverse to the axis of the central air inlet between the central air inlet and the air outlet and said shutter being in the form of a disc of a diameter substantially equal to the diameter of the central air inlet and being movablerelative to said air inlet to close off said air inlet.
  • An internal-induction air distributor comprising a spiral shaped, internally unobstructed-to-spiral-movementof-air diffusion body having a peripheral wall formed with a tangential air inlet adapted to be fed by a source of air under pressure and said body having opposing sides, one of said sides being formed with a circular air outlet opening of a smaller diameter than the diameter of the body and the opposing side being formed with a circular central air inlet disposed concentric with and of smaller diameter than the outlet and a shutter positioned in the body transverse to the axis of the central air inlet for movement between the central air inlet and the air outlet and said shutter being in the form of a disc of a diameter substantially equal to the diameter of the central air inlet to close off said air inlet with said disc being axially displaceable in the body.
  • An internal-induction air distributor comprising a spiral shaped internally unobstructed-to-spiral-movementof-air diffusion body having a peripheral wall and opposing sides, one of said sides being formed with an air outlet of a smaller diameter than the diameter of the body and said peripheral wall of said body having a tangential air inlet adapted to be fed by a source of air under pressure and being formed with a tangential orifice for discharging the dust particles centrifugated in the body and the opposing side having a circular air inlet disposed concentric to the air outlet and being of less diameter than said air outlet and a shutter positioned in the body transverse to the axis of the circular air inlet and disposed for axial movement in the body relative to the air inlet and the air outlet in the sides.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)
US688696A 1956-07-12 1957-10-07 Induction air distributors Expired - Lifetime US3026787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1217578X 1956-07-12

Publications (1)

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US3026787A true US3026787A (en) 1962-03-27

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US688696A Expired - Lifetime US3026787A (en) 1956-07-12 1957-10-07 Induction air distributors

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US (1) US3026787A (en(2012))
BE (1) BE557578A (en(2012))
DE (1) DE1217578B (en(2012))
FR (1) FR1154781A (en(2012))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248606A (en) * 1961-12-08 1966-04-26 Sames Mach Electrostat Apparatus for dispersing and electrically charging substances in discrete particulate form
US3823653A (en) * 1971-10-04 1974-07-16 Ar Ventilation Ab Fluid distributing device
US4181253A (en) * 1977-12-23 1980-01-01 Connor Engineering & Manufacturing, Inc. Ceiling air diffuser and induction apparatus
WO2010124388A1 (en) * 2009-05-01 2010-11-04 Mark Clawsey Ventilator system for recirculation of air and regulating indoor air temperature

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284361A1 (fr) * 1974-09-13 1976-04-09 Fuetoeber Epueletgep Termekek Tete aspirante et melangeuse equipee d'une chambre de tourbillonnement
DE3526760A1 (de) * 1985-07-26 1987-02-05 Mueller E Gmbh & Co Luftauslassvorrichtung fuer lueftungs- und klimaanlagen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US438523A (en) * 1890-10-14 bretney
US578192A (en) * 1897-03-02 Henry h
US1643966A (en) * 1921-10-01 1927-10-04 Denton K Swartwout Ventilating and heating means for conveyances
US1786969A (en) * 1929-11-30 1930-12-30 Heuel Corneal Van Der Hair-drying apparatus
FR785795A (fr) * 1935-02-18 1935-08-19 Central D Etudes De Materiel D Dispositif diffuseur d'air
US2296314A (en) * 1940-08-03 1942-09-22 Franklin L Slade Diffuser
US2313256A (en) * 1941-08-11 1943-03-09 Continental Gin Co Fluid distribution and collection system
US2373741A (en) * 1942-03-13 1945-04-17 William J Caldwell Adjustable nozzle
GB658471A (en) * 1949-08-04 1951-10-10 Oerlikon Maschf Improvements in or relating to dust separators

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US438523A (en) * 1890-10-14 bretney
US578192A (en) * 1897-03-02 Henry h
US1643966A (en) * 1921-10-01 1927-10-04 Denton K Swartwout Ventilating and heating means for conveyances
US1786969A (en) * 1929-11-30 1930-12-30 Heuel Corneal Van Der Hair-drying apparatus
FR785795A (fr) * 1935-02-18 1935-08-19 Central D Etudes De Materiel D Dispositif diffuseur d'air
US2296314A (en) * 1940-08-03 1942-09-22 Franklin L Slade Diffuser
US2313256A (en) * 1941-08-11 1943-03-09 Continental Gin Co Fluid distribution and collection system
US2373741A (en) * 1942-03-13 1945-04-17 William J Caldwell Adjustable nozzle
GB658471A (en) * 1949-08-04 1951-10-10 Oerlikon Maschf Improvements in or relating to dust separators

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248606A (en) * 1961-12-08 1966-04-26 Sames Mach Electrostat Apparatus for dispersing and electrically charging substances in discrete particulate form
US3823653A (en) * 1971-10-04 1974-07-16 Ar Ventilation Ab Fluid distributing device
US4181253A (en) * 1977-12-23 1980-01-01 Connor Engineering & Manufacturing, Inc. Ceiling air diffuser and induction apparatus
WO2010124388A1 (en) * 2009-05-01 2010-11-04 Mark Clawsey Ventilator system for recirculation of air and regulating indoor air temperature

Also Published As

Publication number Publication date
BE557578A (en(2012))
DE1217578B (de) 1966-05-26
FR1154781A (fr) 1958-04-16

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