US2785015A - Nozzle for or provided on an air distributing box - Google Patents

Nozzle for or provided on an air distributing box Download PDF

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Publication number
US2785015A
US2785015A US507393A US50739355A US2785015A US 2785015 A US2785015 A US 2785015A US 507393 A US507393 A US 507393A US 50739355 A US50739355 A US 50739355A US 2785015 A US2785015 A US 2785015A
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United States
Prior art keywords
tube
nozzle
plate
distributing box
air
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Expired - Lifetime
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US507393A
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Paulus Willem Gerardus V Broek
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ETERNIT V H EERSTE NL FABRIEK
N V Eternit V H Eerste Nederlandsche Fabriek Van Asbest-Cementplaten "martinit"
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ETERNIT V H EERSTE NL FABRIEK
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Publication of US2785015A publication Critical patent/US2785015A/en
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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

Definitions

  • This invention relates to a nozzle for or provided on an air distributing box and comprising a flat tube which, at least internally, grows narrower towards its outlet end and which with its wide inlet end is joined to the edge of an appropriately shaped hole in a plate.
  • nozzles are known.
  • the tube has minimum dimensions in the direction in which the air flows therethrough; the narrowing towards the outlet end of said tube is only caused because the tube is formed by bending up the edges of an incision provided in the plate and has no functional significance, therefore.
  • a larger or smaller number of nozzles thus constructed may be secured on the air distributing box in side by side relationship and in a direction normal to the longitudinal axis of the tube profile in order to cover said air distributing box which is open at the upper side.
  • the variation in the number of nozzles may be obtained by cutting a larger or smaller piece from the plate of each nozzle.
  • the number of said nozzles is dependent on the amount of air which, being supplied under a certain pressure, is to flow through the box and the nozzles per unit of time.
  • the nozzles are preferably so constructed that their plates admit of being laid on the edge of the air distributing box in coplanar and in abutting relationship, which plates will then overlap one another like roofing tiles.
  • the tube of the nozzle in the direction of air flow has a length of at least three times its largest transverse width and that at its outlet end said tube is divided by transverse partitions into substantially round channels which likewise grow narrower towards the last named end and which each have a length of the order of their largest diameter.
  • a nozzle opens up the possibility to still further control the amount of air flowing out of the box per unit of time by cutting a larger or smaller piece off the walls of the tapering channels and thus to increase to the desired degree the total free passage area of the outlet openings of the said channels.
  • the nozzle Naturally it is advisable to manufacture the nozzle from a material which easily admits of being cut or sawn. Ebonite and all kinds of other synthetic materials are suitable therefor.
  • Fig. 1 is a front view of a portion of an air distributing box, the nozzles of which are partly sectioned in vertical direction according to line II in Figure 2;
  • Fig. 2 is a side view of said box, partly sectioned according to the line II-II in Fig. 1;
  • Fig. 3 is a plan view of what is shown in Fig. 1.
  • An air distributing box 4 open at the top is connected to the delivery line (not shown) of a fan; the walls of said box are preferably internally lined with a fibrous material and in addition the box may contain bafliles (likewise covered with such a material) which compel the air entering the unit to flow via a zigzag path towards the upper side of the box. Said measures have for their object to dampen the sound of the rapidly flowing air.
  • Figs. 1 and 3 show three of said nozzles.
  • Each nozzle comprises a fiat, rectarigular plate 5 which adjacent one of its long sides is provided with a broad slot 6.
  • the material of the plate 5 continues into an upstanding, flat tube 7 the width of which is constant over the lower part up to the level 8, but upwards of said level said width grows gradually smaller.
  • a plurality of lands 9 is provided in such a manner that substantially round .channels 10 which grow narrower in upward direction, are formed.
  • the plate 5 has an appreciably smaller Width than at the right hand side and it has a. stepped portion 11 there, the lower side of which stepped portion is located below the under side of the plate, so that two plates laid against each other with their long sides in abutting relationship overlap each other like roofing tiles (Fig. 1).
  • each plate has a thickened edge 12 the lower side of which is flush with the lower side of the stepped portion.
  • the plates 5 are secured on the upper edge of the box 4 by means of screws (not shown), a packing strip 13 being interposed between said plates and said upper edge.
  • An air distributing box for an air-conditioning conduit comprising, in combination, wall means defining a chamber for admission of the air to be distributed, one side of said chamber being open, and a plurality of interengageable plates removably positioned in engagement with said wall means to close said open side, each of said plates being formed with an elongated aperture and having a flattened tube extending from the edges of said aperture away from said chamber, the length of said tube being at least three times as great as its largest transverse width and said tube having an outlet end remote from said plate, said outlet end being divided by transverse partitions into a plurality of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening converging toward said opening and the walls of said channels converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
  • An air distributing box for an air-conditioning conduit comprising, in combination, wall means defining a chamber for admission of the air to be distributed, one side of said chamber being open, and a plurality of interengageable rectangular plates removably positioned in over-lapping relationship in engagement with said wall means to close said open side, each of said plates being formed with an elongated aperture and having a flattened tube extending from the edges of said aperture away from said chamber, the length of said tube being at least three times as great as its largest transverse width and said tube having an outlet end remote from said plate, said outlet end being divided by transverse partitions into a plurality meaow a 3 of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening converging toward said opening and the walls of said channels converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
  • An air distribution plate adapted to form at least a portion of one wall of an air distributing box for an airconditioning conduit, said plate being formed with an elongated aperture, a flattened tube extending from the edges of said aperture at right angles to the plane of said plate, the length of said tube being at least three times as great as its largest transverse width and said tube having an outlet end remote from said plate, said outlet end being divided by transverse partitions into a plurality of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening converging toward said opening and the walls of said channels converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
  • An air distribution plate adapted to form at least a portion of one wall'of an air distributing box for an airconditioning conduit, said plate being rectangular in form with a flanged edge tor overlap-ping engagement with a like plate and being formed with an elongated aperture, a flattened tube extending from the edges of said aperture at right angles to the plane of said plate, the length of said tube being at least three times a'scgreat as its largest transverse width and said tube having an outlet end remote from said plate, said outlet and being divided by transverse partitions into a plurality of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening "converging toward said opening and the walls of said channel's converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Duct Arrangements (AREA)

Description

Filed May 10.
P. W. G. VAN DEN BROEK NOZZLE FOR DR PROVIDED ON AN AIR DISTRIBUTING BOX ll 6 5 II 6 March 12, 1957 United States Patent NOZZLE FOR OR PROVIDED ON AN AIR DISTRIBUTING BOX Paulns Willem Gerardus van den Broek, Noordwijk, Netherlands, assignor to N. V. Eternit V. b. Eerste Nederlandsche Fabriek van Asbest-Cementplaten Martlnlt, Amsterdam, Netherlands, a corporation of the Netherlands Application May 10, 1955, Serial No. 507,393 4 Claims. or. 299-141 This invention relates to a nozzle for or provided on an air distributing box and comprising a flat tube which, at least internally, grows narrower towards its outlet end and which with its wide inlet end is joined to the edge of an appropriately shaped hole in a plate. Such nozzles are known. In said known nozzles the tube has minimum dimensions in the direction in which the air flows therethrough; the narrowing towards the outlet end of said tube is only caused because the tube is formed by bending up the edges of an incision provided in the plate and has no functional significance, therefore.
A larger or smaller number of nozzles thus constructed may be secured on the air distributing box in side by side relationship and in a direction normal to the longitudinal axis of the tube profile in order to cover said air distributing box which is open at the upper side. The variation in the number of nozzles may be obtained by cutting a larger or smaller piece from the plate of each nozzle. The number of said nozzles is dependent on the amount of air which, being supplied under a certain pressure, is to flow through the box and the nozzles per unit of time. In view thereof the nozzles are preferably so constructed that their plates admit of being laid on the edge of the air distributing box in coplanar and in abutting relationship, which plates will then overlap one another like roofing tiles.
Now the invention resides in that the tube of the nozzle in the direction of air flow has a length of at least three times its largest transverse width and that at its outlet end said tube is divided by transverse partitions into substantially round channels which likewise grow narrower towards the last named end and which each have a length of the order of their largest diameter. Such a nozzle opens up the possibility to still further control the amount of air flowing out of the box per unit of time by cutting a larger or smaller piece off the walls of the tapering channels and thus to increase to the desired degree the total free passage area of the outlet openings of the said channels. In many cases it may even be desirable to provide the cut below the partitions separating the channels, so that the outlet opening of the nozzle will have the shape of one single elongated slot, the width of which is-larger according as the cut is provided farther away from the outlet end of the tapering channels.
Naturally it is advisable to manufacture the nozzle from a material which easily admits of being cut or sawn. Ebonite and all kinds of other synthetic materials are suitable therefor.
In illustration of the invention an embodiment of the nozzle will be described with reference to the accompanying drawing in which:
Fig. 1 is a front view of a portion of an air distributing box, the nozzles of which are partly sectioned in vertical direction according to line II in Figure 2;
Fig. 2 is a side view of said box, partly sectioned according to the line II-II in Fig. 1;
Fig. 3 is a plan view of what is shown in Fig. 1.
An air distributing box 4 open at the top is connected to the delivery line (not shown) of a fan; the walls of said box are preferably internally lined with a fibrous material and in addition the box may contain bafliles (likewise covered with such a material) which compel the air entering the unit to flow via a zigzag path towards the upper side of the box. Said measures have for their object to dampen the sound of the rapidly flowing air.
On the upper edge of the box 4 a few nozzles according to the invention are provided; Figs. 1 and 3 show three of said nozzles. Each nozzle comprises a fiat, rectarigular plate 5 which adjacent one of its long sides is provided with a broad slot 6. Along the edges of said slot the material of the plate 5 continues into an upstanding, flat tube 7 the width of which is constant over the lower part up to the level 8, but upwards of said level said width grows gradually smaller. In the upper portion of the tube 7 a plurality of lands 9 is provided in such a manner that substantially round .channels 10 which grow narrower in upward direction, are formed.
At the left hand sideaccording to Figs. 1 and 3--of the tube 7 the plate 5 has an appreciably smaller Width than at the right hand side and it has a. stepped portion 11 there, the lower side of which stepped portion is located below the under side of the plate, so that two plates laid against each other with their long sides in abutting relationship overlap each other like roofing tiles (Fig. 1). Along its short sides each plate has a thickened edge 12 the lower side of which is flush with the lower side of the stepped portion. The plates 5 are secured on the upper edge of the box 4 by means of screws (not shown), a packing strip 13 being interposed between said plates and said upper edge.
By sawing a strip off each plate 5 at the right hand side according to Figs. 1 and 3 the width of said plate is reduced, so that the number of nozzles per air distributing box 4 and thus the total free passage area for the air may be increased. For the rest we refer to what is stated in the introduction to this specification.
I claim:
1. An air distributing box for an air-conditioning conduit comprising, in combination, wall means defining a chamber for admission of the air to be distributed, one side of said chamber being open, and a plurality of interengageable plates removably positioned in engagement with said wall means to close said open side, each of said plates being formed with an elongated aperture and having a flattened tube extending from the edges of said aperture away from said chamber, the length of said tube being at least three times as great as its largest transverse width and said tube having an outlet end remote from said plate, said outlet end being divided by transverse partitions into a plurality of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening converging toward said opening and the walls of said channels converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
2. An air distributing box for an air-conditioning conduit comprising, in combination, wall means defining a chamber for admission of the air to be distributed, one side of said chamber being open, and a plurality of interengageable rectangular plates removably positioned in over-lapping relationship in engagement with said wall means to close said open side, each of said plates being formed with an elongated aperture and having a flattened tube extending from the edges of said aperture away from said chamber, the length of said tube being at least three times as great as its largest transverse width and said tube having an outlet end remote from said plate, said outlet end being divided by transverse partitions into a plurality meaow a 3 of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening converging toward said opening and the walls of said channels converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
3. An air distribution plate adapted to form at least a portion of one wall of an air distributing box for an airconditioning conduit, said plate being formed with an elongated aperture, a flattened tube extending from the edges of said aperture at right angles to the plane of said plate, the length of said tube being at least three times as great as its largest transverse width and said tube having an outlet end remote from said plate, said outlet end being divided by transverse partitions into a plurality of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening converging toward said opening and the walls of said channels converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
4. An air distribution plate adapted to form at least a portion of one wall'of an air distributing box for an airconditioning conduit, said plate being rectangular in form with a flanged edge tor overlap-ping engagement with a like plate and being formed with an elongated aperture, a flattened tube extending from the edges of said aperture at right angles to the plane of said plate, the length of said tube being at least three times a'scgreat as its largest transverse width and said tube having an outlet end remote from said plate, said outlet and being divided by transverse partitions into a plurality of channels of substantially circular cross-section, the portion of the walls of said tube adjacent said outlet opening "converging toward said opening and the walls of said channel's converging toward their outlet ends, each of said channels having an axial length of the order of its largest diameter.
References Cited in the file of this patent UNITED STATES 'PATENTS 1,950,796 Hilgerink a Mar. 13, 1934 FOREIGN PATENTS 330,095 Great Britain June s, 1930
US507393A 1953-03-18 1955-05-10 Nozzle for or provided on an air distributing box Expired - Lifetime US2785015A (en)

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NL176944 1953-03-18

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US (1) US2785015A (en)
BE (1) BE538029A (en)
CH (1) CH339363A (en)
FR (1) FR1123981A (en)
GB (1) GB768930A (en)
NL (1) NL79402C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053460A (en) * 1959-04-13 1962-09-11 Continental Aviat & Eng Corp Ice removing apparatus
US3099396A (en) * 1961-02-27 1963-07-30 Richard G Simmons Snow blower apparatus
US3404619A (en) * 1966-05-18 1968-10-08 Topp Wilhelm Friedrich Roof ventilator with nozzled domed end
EP0038159A1 (en) * 1980-04-11 1981-10-21 Fläkt Aktiebolag Method of and apparatus for conditioning the atmosphere of a space
FR2807501A1 (en) * 2000-04-06 2001-10-12 Halton Oy AIR SUPPLY SYSTEM IN A ROOM OF A BUILDING
US20110070807A1 (en) * 2009-09-24 2011-03-24 Kabushiki Kaisha Toshiba Machining apparatus using rotary grinder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124876C2 (en) * 1981-06-25 1985-09-19 Schako Metallwarenfabrik Ferdinand Schad Kg, 7201 Kolbingen Jet nozzle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB330095A (en) * 1929-05-02 1930-06-05 James Edwin Tolmie An improved nozzle for fire-extinguishing and like hose pipes
US1950796A (en) * 1933-04-03 1934-03-13 Frank M Hilgerink Cleaning nozzle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB330095A (en) * 1929-05-02 1930-06-05 James Edwin Tolmie An improved nozzle for fire-extinguishing and like hose pipes
US1950796A (en) * 1933-04-03 1934-03-13 Frank M Hilgerink Cleaning nozzle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053460A (en) * 1959-04-13 1962-09-11 Continental Aviat & Eng Corp Ice removing apparatus
US3099396A (en) * 1961-02-27 1963-07-30 Richard G Simmons Snow blower apparatus
US3404619A (en) * 1966-05-18 1968-10-08 Topp Wilhelm Friedrich Roof ventilator with nozzled domed end
EP0038159A1 (en) * 1980-04-11 1981-10-21 Fläkt Aktiebolag Method of and apparatus for conditioning the atmosphere of a space
FR2807501A1 (en) * 2000-04-06 2001-10-12 Halton Oy AIR SUPPLY SYSTEM IN A ROOM OF A BUILDING
BE1014102A3 (en) * 2000-04-06 2003-04-01 Halton Oy AIR SUPPLY SYSTEM.
US20110070807A1 (en) * 2009-09-24 2011-03-24 Kabushiki Kaisha Toshiba Machining apparatus using rotary grinder

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GB768930A (en) 1957-02-20
BE538029A (en)
FR1123981A (en) 1956-10-02
CH339363A (en) 1959-06-30
NL79402C (en)

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