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Economizer HVAC and control system

a control system and hvac technology, applied in ventilation systems, lighting and heating apparatus, heating types, etc., to achieve the effect of reducing the potential for termination errors, reducing technician effort, and simplifying the way the system is installed

Inactive Publication Date: 2013-12-05
DAVIS DAVID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The disclosed technology solves the problem of errors in economizer mode control by detecting and preventing fault conditions, such as incorrect damper positioning or non-economizing mode operation. The control system uses geometrically coded and pre-wired cables that only fit in one orientation, reducing the potential for termination errors. This simplifies the installation process and makes the system more reliable and efficient. Additionally, the technology allows for the detection and reporting of errors in damper positioning, improving the accuracy of the system and reducing the time a technician spends in the hot environment of an attic.

Problems solved by technology

No other split-system economizer provides two sensors of damper position.

Method used

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  • Economizer HVAC and control system
  • Economizer HVAC and control system
  • Economizer HVAC and control system

Examples

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Embodiment Construction

[0028]FIG. 1 shows the HVAC system of the disclosed technology, which provides for economizer mode operation of the HVAC system 10. The HVAC system 10 includes a circulation fan 12, cooling unit 14, and a network of air delivery ducts 16. The HVAC system 10 provides heating and cooling for a conditioned space 18. A user controls the economizing portion of the HVAC system 10 with control module 20. The HVAC system 10 includes an outside air intake duct 22 to provide outside airflow 24 to the conditioned space 18. Also included is a first, or intake, damper 26. The first damper 26 has two positions: a first, or closed, position 28, and a second, or open, position 30. The HVAC system 10 may have an isolation damper 32, operable between an open position 34 and a closed position 36, and a third (relief) damper 38, operable between a closed position 42 and an open position 40. A preferred embodiment of the control system and HVAC system uses three dampers. Both the second (isolation) damp...

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PUM

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Abstract

An HVAC and control system with an economizer mode and continuous damper position verification. Three dampers are provided with a control module that accepts inputs from multiple temperature sensors and a user, and which monitors and reports the position and off-normal operation of multiple dampers.

Description

PRIORITY / CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 61 / 654,561, filed Jun. 1, 2012, the disclosure of which is incorporated by this reference.BACKGROUND[0002]The disclosure generally relates to the field of heating, ventilation, and air conditioning (HVAC) systems. In the world of HVAC, cooling is provided when heat in the air within a conditioned space (such as the interior of a building) is removed by circulating the air through a cooling coil (i.e., an “air conditioner”) and then re-delivered to the conditioned space to keep the space at the desired temperature. Some HVAC systems have an economizer, which is a subsystem that introduces outside air into the building when the outside air is cool enough that it can be used to either supplement or replace mechanical cooling. An HVAC system with an economizer typically has a set of three actuator-driven dampers. Dampers are devices that function to regulate airf...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F24F11/00
CPCF24F11/0001F24F2011/0002F24F2011/0006F24F11/30F24F2110/00F24F2110/12F24F11/32F24F2140/40F24F11/65F24F11/46F24F11/38
Inventor DAVIS, DAVID
Owner DAVIS DAVID
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