Plate heat exchanger
AssigneeGea Ecoflex GmbH
InventorsReinhard Lehmann, Uwe Hachmeister
Life of this patent
Estimating the term…
Abstract
A plate heat exchanger including adjoining plates disposed adjacent one another and having peripheral grooves and channels alternately for media giving off heat and absorbing heat, seals made of an elastic material each being emplaced between the adjoining plates in the groove of one of the plates, attachment holes in each plate, and nipples on each seal insertable in the holes and with cross-sections different from the penetration cross-sections of the holes such that the nipples when inserted into the holes are not compressed about their entire circumference but only at spaced sites thereon at which the nipples project beyond the margin of the holes. The holes are defined by downturned edges which have radii and point in the insertion direction of the nipples into the holes.
Claims17
A plate heat exchanger, comprising:
- (a) a plurality of adjoining plates disposed adjacent one another so as to form a packet, said plates having peripheral grooves and a plurality of channels alternately for media giving off heat and absorbing heat, and inlet and outlet openings for passage of said media through said channels between said adjoining plates;
- (b) a plurality of seals made of elastic material, each of said seals being emplaced between said adjoining plates in said groove of one of said adjoining plates;
- and
- (c) means for mechanically fastening each of said seals on one of said plates, said fastening means including a plurality of attachment holes defined in each of said plates and a plurality of nipples made of elastic material and being insertable in said holes, said nipples being integrally formed on each of said seals at intervals spaced longitudinally along said seal, said nipples having cross sections different from penetration cross sections of said holes such that said nipples when inserted into said holes are not compressed about the entire circumference of said nipples but only at spaced sites thereon at which said nipples project beyond margins of said holes such that due to said elastic material said nipples can compress radially and axially so as to permit the pressing-in and pulling-out of said nipples into or out of said holes.
A plate heat exchanger, comprising:
- (a) a plurality of adjoining plates disposed adjacent one another so as to form a packet, said plates having peripheral grooves and a plurality of channels alternately for media giving off heat and absorbing heat, and inlet and outlet openings for passage of said media through said channels between said adjoining plates;
- (b) a plurality of seals made of elastic material, each of said seals being emplaced between said adjoining plates in said groove of one of said adjoining plates;
- and
- (c) means for mechanically fastening each of said seals on one of said plates, said fastening means including a plurality of attachment holes defined in each of said plates by annular downturned edges formed in said plates, and a plurality of nipples made of elastic material and being insertable in said holes in the direction of said downturned edges, said nipples being integrally formed on each of said seals at intervals spaced longitudinally along said seal, said nipples having cross sections different from penetration cross sections of said holes such that said nipples when inserted into said holes are not compressed about the entire circumference of said nipples but only at spaced sites thereon at which said nipples project beyond margins of said holes such that due to said elastic material said nipples can compress radially and axially so as to permit the pressing-in and pulling-out of said nipples into or out of said holes.
Dependencies are inferred from the claim text.