The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1993
Filed:
Aug. 10, 1992
Barry M Cohen, Newton Centre, MA (US);
Andrew Popelka, Acton, MA (US);
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Abstract
An interior thermal conditioning method and apparatus with improved zone control is disclosed. The thermal conditioning apparatus, such as a heat pump assembly, generates a desired thermal condition which is conveyed by a thermal distribution medium to a number of zones within a multiple zone building. Each zone includes a heat exchange device for receiving the thermal distribution medium. Each zone also includes a thermostat which is used to set a desired temperature range and to indicate the prevailing temperature. When the prevailing temperature is inconsistent with the desired temperature range, a conditioning request is generated. Rather than immediately responding to the conditioning request, the heat pump controller assesses the temperature of the thermal distribution medium to determine whether it is within a target range. If the thermal distribution medium is not within the target range, execution of the conditioning request is delayed while the heat pump is modulated to produce the desired thermal distribution temperature. Additional conditioning requests may be generated during this modulation period. Conditioning requests are processed after the desired thermal distribution temperature is established. Various criteria may be used to establish conditioning request priorities. Conditioning requests may be swapped with former conditioning requests which are executing. The controller establishes a steady and efficient operation of the heat pump.