Air outlet

• US 3,988,973 A
• Filed: 11/29/1974
• Issued: 11/02/1976
• Est. Priority Date: 06/24/1974
• Status: Expired due to Term

• Current Assignee: LTG Lufttechnische GmbH
• Original Assignee: LTG Lufttechnische GmbH
• Inventors: Honmann, Winfried
• Primary Examiner(s): Camby, John J.
• Assistant Examiner(s): Yuen, Henry C.
• Application Number:
  US05/528,445
• Time in Patent Office: 704 Days
• Field of Search: 98/40 A, 98/2, 98/40 N, 98/40 C, 98/40 V, 98/114, 98/108, 239/562, 239/587, 251/309, 137/625.31, 137/625.32
• US Class Current: 454/286
• CPC Class Codes: B64D 2013/003 Cabin ventilation nozzles
• CPC Class Codes: E04B 9/02 having means for ventilation or vapour discharge
• CPC Class Codes: F24F 13/065 formed as cylindrical or spherical bodies which are rotatable

Abstract

An air inlet through which supply air is blown into the room of a building or the like including at least one roller-shaped elongated blowing element, two mutually parallel disposed bearing shells between which the blowing element is mounted and at least one spring clamp. The spring clamp engages both bearing shells and retains them in assembly with the blowing element to thereby hold the blowing element in a form-fitting and positive force-transmitting manner while permitting the blowing element to pivot about its longitudinal axis. The blowing element includes walls defining a passage through which the air passes into the room. In one embodiment the walls define projections which in turn define an inlet passage for the blowing element which is narrower in width than its outlet passage.

Claims

1. An air inlet means through which supply air is blown into the room of a building or the like for controlling the occurrence of the Coanda effect comprising, an elongated body having spaced walls which define a first air region and a second region lying parallel thereto and coextensive with said first air region, said second region having an inlet opening into said first air region and a longitudinally extending outlet area, a plurality of axially aligned air control means mounted and supported in said second region, each air control means having side walls which define an air passageway having an inlet opening and an outlet opening through which air from said first air region to a zone lying beyond said outlet area, wherein the width of said passageway at said outlet opening is approximately equal to the width of said longitudinally extending outlet area.

2. An air inlet means through which supply air is blown into the room of a building or the like for controlling the occurrence of the Coanda effect comprising, an elongated body having spaced walls which define a first air region and a second region lying parallel thereto and coextensive with said first air region, said second region having an inlet opening into said first air region and a longitudinally extending outlet area, a plurality of axially aligned air control means mounted and supported in said second region, each air control means having side walls which define an air passageway having an inlet opening and an outlet opening through which air from said first air region flows, and which converge at the inlet opening so that said inlet opening is narrower than said outlet opening, thereby controlling emission of air from the said first air region to a zone lying beyond said outlet opening.

3. An air inlet as defined in claim 2, wherein each air control means further has at least one intermediate wall which extends substantially transversely between said side walls thereby subdividing the axial extent of said passageway into separate passageways.

4. In an air inlet through which supply air is blown into the room of a building or the like, preferably from the ceiling of the room, including at least one roller-shaped blowing element, having at least one passageway through which air may flow transversely to the longitudinal direction of the blowing element, and two mutually parallel disposed bearing shells between which the blowing element is mounted for pivotal motion about its longitudinal axis, the improvement comprising at least one spring clamp, wherein each bearing shell includes a curved inner surface portion which substantially conforms to the curvature of the outer surface of the blowing element, and wherein said at least one spring clamp engages both bearing shells for retaining said bearing shells in assembly with the blowing element such that the outer surface of the blowing element and the curved inner surface portion of each bearing shell assume a form-fitting relationship with at least a partial engagement of the outer surface of the blowing element and the curved inner surface portion of each bearing shell, establishing thereby a positive force-transmission between the assembled elements.

5. The air inlet as defined in claim 4, including a plurality of blowing elements arranged in a row, in assembly with said bearing shells, and a plurality of spring clamps arranged along said row to engage the bearing shells.

6. The air inlet as defined in claim 4, wherein the bearing shells are embodied as profiled rails.

7. The air inlet as defined in claim 4, wherein said spring clamp has a substantially U-shaped cross section.

8. The air inlet as defined in claim 7, wherein each bearing shell defines a rear end region which in turn defines a terminus of the bearing shell situated upstream of the blowing element, and wherein said spring clamp has a middle portion which in assembly is disposed in the manner of a spacing element between the two rear end regions of the bearing shells and engages the two rear end regions, said middle portion thereby determining the mutual separation of said bearing shells.

9. The air inlet as defined in claim 7, wherein said spring clamp has a free end region extending from at least one of its side walls, said free end region being adapted to hold the air inlet in an associated opening in the structure of the building or the like.

10. The air inlet as defined in claim 9, wherein said spring clamp has a free end region extending from both of its side walls.

11. In an air inlet through which supply air is blown into the room of a building or the like, preferably from the ceiling of the room, for controlling the occurrence of the Coanda effect including at least one roller-shaped blowing element side walls defining at least one passageway through which air may flow transversely to the longitudinal direction of the blowing element, said passageway having an inlet opening and an outlet opening in the direction of air flow, said side walls having converging projections at the inlet side of the passageway, thereby defining an inlet opening which is narrower in width than its corresponding outlet opening, and two mutually parallel disposed bearing shells between which the blowing element is mounted for pivotal motion about its longitudinal axis, the improvement comprising at least one spring clamp, wherein each bearing shell includes a curved inner surface portion which substantially conforms to the curvature of the outer surface of the blowing element, and wherein said at least one spring clamp engages both bearing shells and presses said bearing shells against the blowing element thereby retaining said bearing shells in assembly with the blowing element such that the outer surface of the blowing element and the curved inner surface portion of each bearing shell assumes a form-fitting relationship with at least a partial engagement of the outer surface of the blowing element and the curved inner surface portions of each bearing shell, establishing thereby a positive force-transmission between the assembled elements.

12. In an air inlet through which supply air is blown into the room of a building or the like, preferably from the ceiling of the room, including at least one roller-shaped blowing element, having at least one passageway through which air may flow transversely to the longitudinal direction of the blowing element, and two mutually parallel disposed bearing shells between which the blowing element is mounted for pivotal motion about its longitudinal axis, the improvement comprising at least one spring clamp, wherein each bearing shell includes a curved inner surface portion which substantially conforms to the curvature of the outer surface of the blowing element wherein said at least one spring clamp engages both bearing shells for retaining said bearing shells in assembly with the blowing element such that the outer surface of the blowing element and the curved inner surface portion of each bearing shell assume a form-fitting relationship with at least a partial engagement of the outer surface of the blowing element and the curved inner surface portion of each bearing shell, establishing thereby a positive force-transmission between the assembled elements, wherein the blowing element is provided with notched indentations formed in its outer surface;

and wherein at least one of the bearing shells has at least one detent projection formed on its curved inner surface portion for engaging said indentations so as to maintain the adjusted angular position of the blowing element.

13. The air inlet as defined in claim 12, wherein each bearing shell has a detent projection formed on its curved inner surface portion which extends over its length, and wherein the notched indentations of the blowing element extend over the length of its circumferential outer surface.

14. In an air inlet through which supply air is blown into the room of a building or the like, preferably from the ceiling of the room, including at least one roller-shaped blowing element, having at least one passageway through which air may flow transversely to the longitudinal direction of the blowing element, and two mutually parallel disposed bearing shells between which the blowing element is mounted for pivotal motion about its longitudinal axis, the improvement comprising at least one spring clamp having a substantially U-shaped cross section, wherein each bearing shell includes a rear end region, a side wall extending from the rear end region, a longitudinal slot in its side wall and a curved inner surface portion which substantially conforms to the curvature of the outer surface of the blowing element, said rear end region defining a terminus of the bearing shell situated upstream of the blowing element, wherein said at least one spring clamp engages both bearing shells for retaining said bearing shells in assembly with the blowing element such that the outer surface of the blowing element and the curved inner surface portion of each bearing shell assume a form fitting relationship with at least a partial engagement of the outer surface of the blowing element and the curved inner surface portion of each bearing shell, establishing thereby a positive force-transmission between the assembled elements, wherein the two legs of said U-shaped spring clamp are each provided with projections which in assembly engage a respective one of the longitudinal slots in the side wall of said bearing shells, and wherein said U-shaped spring clamp in assembly engages the rear end regions of the bearing shells such that the legs of said U-shaped spring clamp originate near the rear end regions of the bearing shells.

15. An air inlet means through which supply air is blown into the room of a building or the like for controlling the occurrence of the Coanda effect comprising, an elongated body having spaced walls which define a first air region and a second region lying parallel thereto and coextensive with said first air region, said second region having an inlet opening into said first air region and a longitudinally extending outlet area, a plurality of axially aligned air control means mounted and supported in said second region, each air control means having side walls which define an air passageway having an inlet opening and an outlet opening through which air from said first air region flows, and which converge at the inlet opening so that said inlet opening is narrower than said outlet opening, thereby controlling emission of air from the said first air region to a zone lying beyond said outlet opening, wherein the side walls of each air control means include converging projections at the inlet opening which extend outwardly from the side walls.

16. An air inlet as defined in claim 15, wherein said air control means are embodied as roller-shaped members, and wherein said projections have an arcuate shape.