Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems

Patent 4205381 Issued on May 27, 1980. Estimated Expiration Date:

August 31, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3826305

3834617

Air conditioning system with integral energy conserving elements
Patent #: 3949807
Issued on: 04/13/1976
Inventor: Tyler

Air-conditioning apparatus
Patent #: 3951205
Issued on: 04/20/1976
Inventor: Zilbermann

Energy conservation air conditioning system
Patent #: 3979922
Issued on: 09/14/1976
Inventor: Shavit

Control of heating and cooling available from central sources to a multi-zone temperature controlled space Patent #: 4013118
Issued on: 03/22/1977
Inventor: Zimmer , et al.

Inventors

Application

No. 05/829379 filed on 08/31/1977

US Classes:

700/277, Multiple zones165/216, Mixing of separate centrally supplied hot and cold stream before discharge into each zone (e.g., dual-duct, etc.)165/249Proportion of outdoor air and return air controlled

Examiners

Primary: Smith, Jerry

Attorney, Agent or Firm

Chiantera; Dominic J.

International Classes

G05D 23/20 (20060101)
F24F 11/00 (20060101)
F24F 3/00 (20060101)

Abstract

Electronic processing means, in combination with dedicated sensing apparatus is used to control the operation of an HVAC system which regulates the temperature in one or more temperature controlled spaces. The electronic processing means and associated sensing apparatus being readily adapted to existing HVAC systems through interface apparatus installed in each of the existing HVAC control lines associated with the HVAC sources of mixed air, hot air, and cold air, to provide selective actuation and modulation of the discharge air temperature from each source, individually or in combination, in response to sensed HVAC parameters including source discharge temperatures, space temperatures, outside air temperature, and the relative humidity of the outside air and return air from the spaces.