Patents by Inventor Setsuro Asai

Setsuro Asai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Absorption cooling and heating system
    Patent number: 4437321
    Abstract: A heat accumulator and heat pipes are connected to an absorption cooling and heating system including a generator, two outdoor heat exchangers, an expansion valve for cooling, an expansion valve for heating, an expansion valve for defrosting, two indoor heat exchangers, a pressure reducing valve for solutions, a solution pump and a plurality of valves for switching between channels, wherein the first of the two indoor heat exchangers functions as a condenser, the two indoor heat exchangers function as evaporators and the second outdoor heat exchanger functions as an absorber in a cooling mode, the first indoor heat exchanger functions as a condenser, the two indoor heat exchangers function as evaporators and the second indoor heat exchanger functions as an absorber in a heating mode, and the two indoor heat exchangers function as condensers and the second indoor heat exchanger functions as an absorber in a defrosting mode.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: March 20, 1984
    Assignee: Hitachi, Ltd.
    Inventor: Setsuro Asai