Fully articulated and comprehensive air and fluid distribution, metering and control method and apparatus for primary movers, heat exchangers, and terminal flow devices

• US 20080156887A1
• Filed: 01/14/2008
• Published: 07/03/2008
• Est. Priority Date: 05/03/2005
• Status: Active Grant

• Current Assignee: Daniel Stanimirovic
• Original Assignee: Daniel Stanimirovic
• Inventors: Stanimirovic, Daniel
• Granted Patent: US 8,235,777 B2
• Time in Patent Office: Days
• US Class Current: 236/12.1
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/32 Responding to malfunctions or emergencies
• CPC Class Codes: F24F 11/49 ensuring correct operation, e.g. by trial operation or configuration checks
• CPC Class Codes: F24F 11/89 Arrangement or mounting of control or safety devices
• CPC Class Codes: F24F 2110/30 Velocity
• CPC Class Codes: F24F 2110/40 Pressure, e.g. wind pressure

Abstract

The described method and apparatus pertains namely to the HVAC (Heating, Ventilating, and Air Conditioning) industry, though its many functions extend into any and all forms of air-fluid movement, metering, distribution, and containment. Essentially, the scope of operation of the method and apparatus encompasses all forms of scientific and engineering measurement dealing with fluid dynamics, fluid statics, fluid mechanics, thermal dynamics, and mechanical engineering as they pertain to precise, articulated control of air-fluid distribution and delivery. The described method and apparatus offers complete, comprehensive, and correct utilization of air-fluid movers and terminal devices under unique sensor logic control, from initial lab testing stages through to equipment cataloguing, selection, design and construction of any and all air-fluid distribution systems in entirety, whereas previously there was no such cohesive, total and terminal method of control for these systems or their components.

Claims

1. An apparatus for mixing airstreams and adjusting percentages of OA/RA (Outdoor Air/Return Air) content in air distribution systems (FIG. 4) which comprises

a main flow-pressure sensing station measuring total air quantity (2);

a ducted mixing box housing fitted with dual damper control (3) and sensing stations (4) in parallel operation (19);

an actuation means of modulating open or closed, allowing both air streams to be throttled and mixed in particular proportions of Outdoor Air primary air quantity and Return Air secondary air quantity at operating conditions set (10) and maintained as per flow-pressure monitor sensor input (2, 4).

2. A method for controlling Outdoor Air and Return Air content in air distribution systems wherein Total Air quantity is first determined at the main flow-pressure sensing station (2), and

Outdoor Air content of Total Air is monitored at its terminal device (4);

Return Air content of Total Air is monitored at its terminal device (4);

the Outdoor Air damper is modulated to increase or decrease OA content accordingly to the design value set;

the Return Air damper is modulated to increase or decrease RA content accordingly to the design value set;

a calculating step is performed wherein OA/RA values are deducted from Total Air (2);

Mover Total Pressure losses (20) are compared against Unit Total External losses (21) to surmount any internal or System Effect losses;

applying mover power (7) as needed to maintain the operating conditions (10) and the total system constant (5);

and applying mover power (7) as needed to maintain the operating conditions (10) and the sub-system constant (5) of the OA or RA terminal.

3. The method of claim 300, wherein if the OA value falls below the design rate and the OA terminal device (3) is in its maximum position, the RA damper may close incrementally to produce an increase of OA as deducted from Total Air (2);

applying mover power (7) as needed;

maintaining the operating conditions (10) and the system constant (5) and the sub-system constant (5) of the OA terminal.