US3895567A - Air outlet arrangement for air conditioning and ventilating apparatus - Google Patents

Air outlet arrangement for air conditioning and ventilating apparatus Download PDF

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Publication number
US3895567A
US3895567A US386573A US38657373A US3895567A US 3895567 A US3895567 A US 3895567A US 386573 A US386573 A US 386573A US 38657373 A US38657373 A US 38657373A US 3895567 A US3895567 A US 3895567A
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United States
Prior art keywords
air
chamber
wall
partition
communicating
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Expired - Lifetime
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US386573A
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English (en)
Inventor
Werner Paul
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Individual
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Individual
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Publication of US3895567A publication Critical patent/US3895567A/en
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Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87603—Plural motivating fluid jets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87619—With selectively operated flow control means in inlet
    • Y10T137/87627—Flow control means is located in aspirated fluid inlet

Definitions

  • an elongated pressure chamber for primary air is provided with nozzles, or ejector openings in the top thereof, leading into a second chamber which is subdivided by a vertical partition, one side of the partition being arranged to be supplied with secondary air, the other side of the partition being exposed to the outlet from the nozzles or ejectors, so that the secondary air is drawn into the second portion of the chamber, which will therefore form a mixing chamber; the partition extends not quite up to the dividing wall between the pressure chambers and the mixing chamber, to form a slot-like gap, through which air is drawn, to effect thorough mixing of secondary and primary air.
  • the present invention relates to an air outlet arrangement for air conditioning and ventilating apparatus, and more particularly to such apparatus in which two different air streams are being mixed; typically, one air stream is primary, cooled air, and the other air stream is secondary, ambient, or fresh air, and which is simple to construct and presents little noise in operation.
  • Air outlet devices have therefore been developed wherein the cold primary air is first intimately mixed with (warmer) secondary air in a mixing zone before this air mixture flows through the air-exhaust opening of the air outlet into the space at an air temperature and air speed which ensure draught-free air conditioning.
  • the secondary air in this case may be room air or atmospheric air.
  • An air outlet device of this type is described for instance in German Pat. specification No. 1 103546. This known device includes a longitudinallyextending box portion open at the front, which in crosssection has a wall portion extending transversely to the flow direction and along whose length are disposed spaced apertures for the upwardly flowing primary air.
  • this device At some spacing in front of an upwardly and forwardly directed wall portion there is disposed in this device a longitudinally extending plate which forms a boundary of a mixing chamber into which secondary air is sucked through a lower air inlet by the injector effect of the primary air flowing through the apertures into the mixing chamber. said secondary air being mixed in the mixing chamber with the primary air before emergence from the air outlet aperture.
  • a change in the mixture ratio between the primary air and the suckedin secondary air can be effected by appropriate alteration of the size, shape and arrangement of the openings for primary air. Such a change in the openings for primary air is not, however, possible without constructional expense which makes the entire plant dearer.
  • An airoutlet device for air-conditioning and ventilation apparatus having an elongate pressure chamber suppliable with primary air and associated therewith a mixing chamber bounding the air-outlet opening, wherein at a portion of its wall adjacent the mixing chamber the pressure chamber for a specific length has opening means for the primary air and from which, by the injector effect, this can be drawn in by primary air flowing into the mixing chamber at increased speed secondary air which flows through a secondary-air inlet opening into the mixing chamber and is intimately mixed in said chamber with the primary air before emerging through the air-outlet opening, the opening means for the primary air being provided in the base portion of a chamber open at one side and directly mounted on the pressure chamber, said open-sided chamber being divided by a partition extending longitudinally of the opening means for the primary air into the mixing chamber and a secondary-air feed channel adjacent to the latter and said partition terminating at a pre-determined distance above said base portion of said open-sided chamber thus to form a slot-like opening located laterally of the opening means for
  • the mixture ratio between primary and secondary air can be adjusted.
  • the distance from the base portion of the partition edge which bounds the secondary air inlet is also desirable for the distance from the base portion of the partition edge which bounds the secondary air inlet to be adjustable. This can be effected by constructing the partition with a part fixedly attached to the chamber wall and on which is adjustably mounted a flat slide plate.
  • the chamber mounted on the pressure chamber is bounded by parallel walls, and the secondary air feed channel divided by the partition terminates in the immediate vicinity of the air outlet aperture.
  • the secondary air feed channel may discharge into the plane containing the air outlet opening, so that room air sucked in through the secondary air feed channel flows into the mixing chamber.
  • the opening means for primary air may take the form of a number of nozzles uniformly distributed over the length of the pressure chamber, but the arrangement may also be such that the opening means for primary air comprises at least one air-passage slot.
  • the mixing chamber prefferably be provided in the vicinity of the air outlet aperture with a control member which influences the free crosssection for the passage of air, and enables the direction of emission of air from the air outlet device to be controlled.
  • the pressure chamber itself, and if necessary the mixing chamber also, are preferably lined with soundabsorbing material in order to keep the intrinsic noise level as low as possible.
  • FIG. 1 is a side elevation of an air outlet device in accordance with the invention, illustrating nozzlez ejectors
  • FIG. la is a view similar to FIG. 1 and having a slot ejector
  • FIG. 2 is a plan view of the device of FIG. 1;
  • FIG. 2a is a plan view of the device of FIG. 1a;
  • FIG. 3 is a sectional elevation of the device on the line III III of FIG. 1;
  • FIG. 4 is a sectional elevation of the device on the line IV IV of FIG. la.
  • the air outlet device shown in the figures of the drawing comprises an elongate sheet metal box 2 surrounding a pressure chamber 1 and closed at its ends at 3 and 4.
  • a lateral primary air inlet 5 opens into the box 2.
  • the pressure chamber 1 is also part of a primary air channel into which the primary air flows in the axial direction.
  • the pressure chamber 1 is lined with a soundabsorbing material 6; at the top it is closed by a wall 7 connected with the sheet metal box 2 and which at the same time forms the base portion of a chamber 8 superimposed on the pressure chamber 1.
  • the chamber 8 is laterally bounded by parallel wall parts 9 joined together at the ends by transversely-extending end wall parts 10, 11.
  • openings for the passage of primary air from the pressure chamber 1 which in the forms shown in FIGS. 1 and 2 take the form of a number of nozzles 12 distributed over a predetermined length of a straight line, while in the form shown in FIGS. la and 2a the openings for passage of the primary air are formed by a longitudinal slot 13 formed in a nozzle-like slotted bar 140 (see FIG. 4).
  • the chamber 8 is divided by a partition 14 extending parallel to the openings 12 or 13, as the case may be, into a mixing chamber 15 and an adjacent feed channel 16 for the secondary air. In the manner apparent from FIGS. 3 and 4 the partition 14 terminates at a predetermined distance above the base portion 7 of chamber 8.
  • V The edge of the partition 14 nearest to the base portion 7 of chamber 8 is at an adjustable distance from said base portion 7.
  • the partition 14 is formed with a portion 14a fixedly attached to the walls 9, 10, 11 of the chamber 8, with a flat slide plate 14b adjustably attached to portion 14a.
  • the slide plate 14b which at its bottom projects beyond the marginal edge of the stationary portion 1411, can be set by means of slots 17 and clamping screws 18 at any desired height in relation to the stationary portion 14a and fixed in position.
  • the device operates as follows:
  • the primary air On admission of primary air into the pressure chamber 1 the primary air flows through the air openings 12 or 13, as the case may be, into the mixing chamber 15 in the direction of the arrows shown in FIGS. 3 and 4. A reduced pressure is thus created in the secondary air feed channel 16 by the injector effect, so that secondary air is sucked through the slot-like aperture 170 into the mixing chamber 15, where it is intimately mixed with the primary air before the air leaves the mixing chamber 15 through the air-outlet aperture 19 and enters the space to be air-conditioned.
  • the ratio of the secondary air and primary air in the mixture depends on the free crosssection of the slot-like aperture 170; it can be adapted to requirements at any time by appropriate setting of the slide plate 14b. In the manner apparent from FIGS.
  • the secondary air feed channel 16 discharges in the immediate vicinity of the air-outlet aperture 19, the air-inlet aperture 20 and the air-outlet aperture 19 lying in a common plane.
  • the feed channel 16 for secondary air is extended, for example, to the outside air, or alternatively has a lateral air-inlet opening in through which the secondary air flows.
  • a control member in the form of a swingably-mounted vane 21 which enables the direction of emergence of air from the mixing chamber 15 to be adjusted to suit the prevailing conditions.
  • Air outlet structure arrangement for air conditioning and ventilating apparatus comprising an elongated box-like structure (2); an internal elongated partition wall (7) subdividing said structure (2) into two elongated adjacent chambers (1,8), so that said wall (7) will be common to both said chambers and form one side of each; the first of said chambers (1) forming an elongated pressure chamber (1);
  • partition means (14) extending into said second chamber (8) in a direction towards said wall (7) to partition said second chamber into a secondary air feed channel (16) communicating with said air inlet (20) and a second mixing chamber (15) communicating with said mixing air outlet (19), said orifice means (12, 13) and said air feed channel (16), the partition means (14) terminating short of said wall (7) to form a gap or slot between the edge of the partition means and the wall (7); the spacing between said wall (7) and the lower edge of the partition means (14) being adjustable to adjust the width of said gap or slot; the orifice means being located in said wall (7 to direct primary air into said mixing chamber of said second chamber and draw air from said air feed channel (16) through the gap, or slot (170) between the partition means (14) and said wall (7) and into said mixing chamber;
  • the inlet opening (20) communicating with the secondary air feed channel (16) being located adjacent to the air outlet opening (19) and in the plane containing the air outlet opening, so that the inlet opening (20) and the outlet opening (19) will be located adjacent each other, and separated by said partition means (14).
  • the partition includes a plate (14a) fixedly attached to the walls of the second chamber and a flat slide-plate (14b) is adjustably arranged on said plate.
  • the orifice means for the passage of primary air comprises at least one nozzle-like slot (13).
  • Air outlet structure arrangement for air conditioning and ventilating apparatus comprising an elongated box-like structure (2) forming a pressure chamber; an internal elongated partition wall (7) closing off said structure (2) to define an elongated adjacent chamber (8), so that said wall (7) will be common to said chamber and the outside thereof and form one side thereof of each; said chamber (8) having substantially parallel boundary walls (9, 10, 11);
  • a mixed air outlet (19) formed in the structure and communicating with said chamber (8);
  • orifice means (12,13) penetrating said wall (7) and forming an outlet for primary air from the outside leading into the chamber (8) and being shaped to draw air through the inlet (20) by injector effect into said chamber (8);
  • partition means 14 extending into said chamber (8) in a direction towards said wall (7) to partition said chamber into a secondary air feed channel (16) communicating with said air inlet (20) and a secondmixing chamber (15) communicating with said mixing air outlet (19), said orifice means (12,13) and said air feed channel (16).
  • the partition means I (14) terminating short of said wall (7) to form a gap or slot between the edge of the partition means and the wall (7), the spacing between said wall (7) and the lower edge of the partition means (14) being adjustable to adjust the width of said gap or slot;
  • the orifice means being located in said wall (7) to direct primary air into said mixing chamber of said chamber and draw air from said air feed channel (16) through the gap, or slot (170) between the partition means (14) and said wall (7) and into said mixing chamber;
  • the inlet opening (20) communicating with the secondary air feed channel (16) being located adjacent to the air outlet opening (19) and in the plane containing the air outlet opening, so that the inlet opening (20) and the outlet opening (19) will be located adjacent each other, and separated by said partition means (14).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Central Air Conditioning (AREA)
US386573A 1972-08-30 1973-08-08 Air outlet arrangement for air conditioning and ventilating apparatus Expired - Lifetime US3895567A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2242582A DE2242582C3 (de) 1972-08-30 1972-08-30 LuftauslaB-Vorrichtung für Raumklimatisierungs- und Belüftungsanlagen

Publications (1)

Publication Number Publication Date
US3895567A true US3895567A (en) 1975-07-22

Family

ID=5854967

Family Applications (1)

Application Number Title Priority Date Filing Date
US386573A Expired - Lifetime US3895567A (en) 1972-08-30 1973-08-08 Air outlet arrangement for air conditioning and ventilating apparatus

Country Status (14)

Country Link
US (1) US3895567A (pt)
JP (1) JPS4958653A (pt)
AT (1) AT328139B (pt)
AU (1) AU5939173A (pt)
BE (1) BE802928A (pt)
BR (1) BR7306670D0 (pt)
CA (1) CA993188A (pt)
CH (1) CH561399A5 (pt)
DE (1) DE2242582C3 (pt)
ES (1) ES417736A1 (pt)
FR (1) FR2198102B1 (pt)
GB (1) GB1433403A (pt)
IT (1) IT986464B (pt)
ZA (1) ZA735170B (pt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007147259A1 (en) * 2006-06-23 2007-12-27 Veft Aerospace Technology Inc. Entrainment air flow control and filtration devices
US20090163131A1 (en) * 2006-05-18 2009-06-25 Douglas Stuart Walkinshaw Personal environment airflow controller
CN107355916A (zh) * 2017-08-28 2017-11-17 珠海格力电器股份有限公司 中央空调设备
US11421897B2 (en) * 2019-03-29 2022-08-23 Air Distribution Technologies Ip, Llc Air diffuser for localized climate control

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2922441C2 (de) * 1979-06-01 1985-10-17 Heinrich Dipl.-Ing. 5205 St Augustin Hilbers Induktionsgerät zur Belüftung von Aufenthaltsräumen
DE3124876C2 (de) * 1981-06-25 1985-09-19 Schako Metallwarenfabrik Ferdinand Schad Kg, 7201 Kolbingen Weitwurfdüse
DE3906210A1 (de) * 1989-02-28 1990-08-30 Ltg Lufttechnische Gmbh Duesenkasten
CN113251598B (zh) * 2021-04-20 2022-12-23 青岛海尔空调器有限总公司 一种空调恒温控制方法、控制装置及空调器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1211371A (en) * 1916-09-27 1917-01-02 Rockwell W S Co Frictionally-held blast-gate.
US2663244A (en) * 1951-06-09 1953-12-22 John R Macdowell Register outlet for warm air house-heating systems
US2674177A (en) * 1951-08-04 1954-04-06 C A Olson Mfg Company Recirculating entrainment device for forced air heating systems
US2858759A (en) * 1955-03-21 1958-11-04 Coleman Co Ceiling air mixer cabinet and method of heating
US2976794A (en) * 1957-04-30 1961-03-28 Svenska Flaektfabriken Ab High-velocity primary air nozzle
US3283728A (en) * 1964-06-12 1966-11-08 Wilhelm B Notzke Ejector
US3530782A (en) * 1968-09-17 1970-09-29 Auer Register Co Register assembly
US3611908A (en) * 1969-11-14 1971-10-12 Hendrik J Spoormaker Air-conditioning terminal units
US3643688A (en) * 1969-01-28 1972-02-22 Noll Maschfab Gmbh Device for the continuous mixing of beverage components in a predetermined quantity ratio
US3720258A (en) * 1970-07-14 1973-03-13 Kilpatrick & Co Air conditioning system with variable primary air volume terminal and method of operation therefor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE533582A (pt) * 1953-11-23
US2783979A (en) * 1955-03-02 1957-03-05 Borg Warner Induction unit for air conditioning

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1211371A (en) * 1916-09-27 1917-01-02 Rockwell W S Co Frictionally-held blast-gate.
US2663244A (en) * 1951-06-09 1953-12-22 John R Macdowell Register outlet for warm air house-heating systems
US2674177A (en) * 1951-08-04 1954-04-06 C A Olson Mfg Company Recirculating entrainment device for forced air heating systems
US2858759A (en) * 1955-03-21 1958-11-04 Coleman Co Ceiling air mixer cabinet and method of heating
US2976794A (en) * 1957-04-30 1961-03-28 Svenska Flaektfabriken Ab High-velocity primary air nozzle
US3283728A (en) * 1964-06-12 1966-11-08 Wilhelm B Notzke Ejector
US3530782A (en) * 1968-09-17 1970-09-29 Auer Register Co Register assembly
US3643688A (en) * 1969-01-28 1972-02-22 Noll Maschfab Gmbh Device for the continuous mixing of beverage components in a predetermined quantity ratio
US3611908A (en) * 1969-11-14 1971-10-12 Hendrik J Spoormaker Air-conditioning terminal units
US3720258A (en) * 1970-07-14 1973-03-13 Kilpatrick & Co Air conditioning system with variable primary air volume terminal and method of operation therefor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090163131A1 (en) * 2006-05-18 2009-06-25 Douglas Stuart Walkinshaw Personal environment airflow controller
WO2007147259A1 (en) * 2006-06-23 2007-12-27 Veft Aerospace Technology Inc. Entrainment air flow control and filtration devices
US20090311951A1 (en) * 2006-06-23 2009-12-17 Indoor Air Technologies Inc. Entrainment air flow control and filtration devices
US8206475B2 (en) * 2006-06-23 2012-06-26 Veft Aerospace Technology Inc. Entrainment air flow control and filtration devices
CN107355916A (zh) * 2017-08-28 2017-11-17 珠海格力电器股份有限公司 中央空调设备
US11421897B2 (en) * 2019-03-29 2022-08-23 Air Distribution Technologies Ip, Llc Air diffuser for localized climate control
US11761642B2 (en) 2019-03-29 2023-09-19 Air Distribution Technologies Ip, Llc Air diffuser for localized climate control

Also Published As

Publication number Publication date
ZA735170B (en) 1974-07-31
ES417736A1 (es) 1976-02-16
CA993188A (en) 1976-07-20
DE2242582B2 (de) 1977-11-17
FR2198102A1 (pt) 1974-03-29
DE2242582A1 (de) 1974-03-28
GB1433403A (en) 1976-04-28
JPS4958653A (pt) 1974-06-06
BE802928A (fr) 1973-11-16
FR2198102B1 (pt) 1977-09-09
IT986464B (it) 1975-01-30
ATA651673A (de) 1975-05-15
CH561399A5 (pt) 1975-04-30
BR7306670D0 (pt) 1974-08-29
DE2242582C3 (de) 1979-02-15
AT328139B (de) 1976-03-10
AU5939173A (en) 1975-02-20

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