Patents Assigned to Alfa-Laval Agrar GmbH
  • Patent number: 4654071
    Abstract: In order to reduce the volume increase of liquid manure during its storage, a process is proposed for the treatment of liquid manure in which at least one copper electrode and one counter-electrode are placed in the liquid manure, and copper ions from the copper electrode connected as the anode are introduced into the liquid manure by the application of a DC voltage which is preferably below the gassing voltage of the liquid manure.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: March 31, 1987
    Assignee: Alfa-Laval Agrar GmbH
    Inventor: Wolfgang Muller
  • Patent number: 4438806
    Abstract: A heat exchanger wherein an insulating upright jacket contains a body of relatively cold liquid and spacedly surrounds a hollow upright hollow cylindrical heat conducting body which, in turn, spacedly surrounds a helical heating body confining a flowing heating medium. The upper and lower ends of the heat conducting body are open so that cold liquid can enter the heat conducting body from below to exchange heat with the medium in the helical heating body, to thereby rise in the heat conducting body, and to issue at the upper end of the heat conducting body. The upper end of the heat conducting body has a flow restrictor which defines an outlet opening for the heated liquid. An electric heater can be installed in the jacket to heat the liquid when the supply of warmer medium is insufficient.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: March 27, 1984
    Assignee: Alfa-Laval Agrar GmbH
    Inventor: Dieter Kaehler
  • Patent number: 4305454
    Abstract: A heat exchanger wherein an upright insulated outer jacket contains a body of relatively cold liquid and spacedly surrounds an upright hollow cylindrical heat conducting body which, in turn, spacedly surrounds a helical heating body confining a flowing heating medium. The upper and lower ends of the heat conducting body are open so that cold liquid can enter the heat conducting body from below to exchange heat with the medium in the helical heating body, to thereby rise in the heat conducting body, and to issue at the upper end of the heat conducting body. The upper end of the heat conducting body has a flow restrictor which defines an outlet opening for the heated liquid. An electric heater can be installed in the outer jacket to heat the liquid when the supply of warmer medium is insufficient.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: December 15, 1981
    Assignee: Alfa-Laval Agrar GmbH
    Inventor: Dieter Kaehler