Volume flow regulator for air conditioning and ventilation apparatus

• US 5,398,728 A
• Filed: 06/21/1993
• Issued: 03/21/1995
• Est. Priority Date: 06/23/1992
• Status: Expired due to Term

• Current Assignee: TROX GmbH
• Original Assignee: Gebruder Marklin & CIE Gesellschaft Mit Beschrankter Haftung
• Inventors: Baumeister, Gregor, Sadkowski, Manfred
• Primary Examiner(s): Scherbel, David A.
• Assistant Examiner(s): Till, Terrence R.
• Application Number:
  US08/080,437
• Time in Patent Office: 638 Days
• Field of Search: 137/499, 138/38, 138/39, 138/45, 138/46, 138/37, 454/333, 454/334, 454/358, 454/361
• US Class Current: 138/37
• CPC Class Codes: F24F 13/10 movable, e.g. dampers
• CPC Class Codes: Y10T 137/7786 Turbine or swinging vane type reactor

Abstract

A volume flow controller for air conditioning and ventilation apparatus which has a pivotable flap in a flow duct whose pivot shaft has a lever arm and which is articulated to a spring. To provide a mechanically self-actuating volume flow controller, in which the spring is matched to the control process by a simple adjustment, the spring is a leaf spring whose one end is connected with a lever and whose other end is so fastened on a cam disk that upon adjustment of the cam disk about a rotation point, the leaf spring is entrained by the cam disk and rolls on the curve thereof. A device is provided for fixing the cam disk.

Claims

1. A volume flow regulator for an air-conditioning or ventilating apparatus, comprising:

a duct traversed by a flow of air;

a flap swingable in said duct and acted upon by said flow of air, whereby a torque on said flap is determined by said flow;

a flap shaft carrying said flap and rotatable on said duct and having an end projecting beyond said duct;

a lever connected to said end of said flap shaft;

a leaf spring having one end articulately connected to said lever and another end;

a cam pivotable about a pivot axis transversely spaced from and parallel to said flap shaft and having a curved surface, said other end being connected to said cam whereby said leaf spring rolls upon said curved surface upon rotation of said cam, thereby altering prestress on said leaf spring and a direction of force application thereto; and

means for releasably fixing a position of said cam about said pivot axis.

2. The volume flow regulator defined in claim 1, further comprising a connecting bar articulatedly connecting said lever with said one end of said leaf spring.

3. The volume flow regulator defined in claim 1, further comprising a connecting cable articulatedly connecting said lever with said one end of said leaf spring.

4. The volume flow regulator defined in claim 1 wherein said leaf spring extends substantially orthogonal to the flow of air in said duct in a relieved condition of said leaf spring.

5. The volume flow regulator defined in claim 4, further comprising a connecting bar articulatedly connecting said lever with said one end of said leaf spring.

6. The volume flow regulator defined in claim 4, further comprising a connecting cable articulatedly connecting said lever with said one end of said leaf spring.