Patents Assigned to APV Heat Exchanger A/S
  • Method for leakage control and localization of leakages in the internal faces of heat exchangers
    Patent number: 6948551
    Abstract: A method for leakage control and localization of leakages in a plate heat exchanger includes supplying a solution containing a fluorescent colorant to one of either a primary passageway or a secondary passageway of the heat exchanger, supplying a clear liquid to the opposite passageway, recycling the clear liquid, and detecting the presence of the fluorescent colorant in the clear liquid.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: September 27, 2005
    Assignee: APV Heat Exchanger A/S
    Inventor: Per Bruun Famme
  • Heat exchanger plate and such a plate with a gasket
    Patent number: 6935415
    Abstract: A heat exchanger plate includes a gasket groove that extends through a portion of the plate proximate to the periphery of the plate. The groove includes spaced expanded portions disposed to receive a plurality of coupling elements formed on an associated gasket. The expanded portions include tongue-like ridged portions with openings substantially perpendicular to the longitudinal direction of the gasket groove that are configured to receive the gasket coupling elements.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: August 30, 2005
    Assignee: APV Heat Exchanger A/S
    Inventors: Jes H. Petersen, Benny Jensen
  • Heat exchange plate having a reinforced edge structure
    Patent number: 6073687
    Abstract: A heat exchanger plate for use in a plate heat exchanger is made of a plate material which is pressed such that a gasket groove is formed, the gasket groove essentially extending along the edge of the heat exchanger plate. The plate material between the gasket groove and the edge of the heat exchanger plate is corrugated. The outermost portion of the heat exchanger plate is shaped as a plane face at least in an area along the edge of the heat exchanger plate, and the plane face is essentially positioned in the central plane of the pressed heat exchanger plate.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: June 13, 2000
    Assignee: APV Heat Exchanger A/S
    Inventors: Benny Jensen, Ellg.ang.rd S.o slashed.e Pedersen, Jes Hansen Petersen
  • Plate heat exchanger
    Patent number: 5967227
    Abstract: Plate heat exchanger (1) comprising a plurality of rectangular plate elements (2) and intermediary gaskets (3) held clamped in a stack (4). At least two diagonally opposed corners (7) of each plate (2) in the stack (4), comprise depressed corner areas, which are connected to the inner plate area at a concave bending line (9). The outer contour of the depressed corner area of a plate (2) in the stack (4) is in positive engagement with the inner contour of the depressed corner area of the next following plate (2) in the stack (4). This ensures alignment of the stack, both during assembly and during subsequent use.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: October 19, 1999
    Assignee: APV Heat Exchanger A/S
    Inventors: Benny Jensen, Ellgaard S.o slashed.e Pedersen, Jes Petersen