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:
May. 24, 1977
Filed:
Jan. 20, 1976
Berth Ulrik Gustafsson, Osterskar, SW;
Projectus Industriprodukter AB, Stockholm, SW;
Abstract
There is provided a method and an apparatus for controlling the temperature of a plurality of rooms having mutually different and varying heat requirements, among which rooms at least one normally has a cooling requirement. The common input air flow to the rooms passes a heat exchanger and is cooled to the requisite temperature for the room having a cooling requirement, while the separate input air flows to the respective rooms are afterheated by means of after heating banks, one for each room, to the desired temperature. The heat exchanger is, or is connected to, an evaporator in a refrigerator (heat pump) the condenser of which is located in the common output airflow from the rooms. The heating banks are heat supplied by part of the condensation heat of the refrigerant vapor. When the cooling requirement for the room having the lowest heat input requirement is replaced by a heating requirement, the heat exchanger is switched to function as a condenser in the refrigerator circuit and the condenser is switched to function as an evaporator in the refrigerator, while the heating banks remain as condenser units.