Gasket arrangement, heat transfer plate, kit and assembly

Abstract

A gasket arrangement comprises a sealing part for sealing between two heat transfer plates, which each comprises a number >1 of port holes. An attachment part is arranged to attach the gasket arrangement to one of the heat transfer plates. The sealing part comprises an annular outer sealing portion arranged to extend along at least a part of a respective outer edge of the heat transfer plates and enclose the portholes, and an annular inner sealing portion enclosed by the outer sealing portion and arranged to enclose at least one of the port holes. The attachment part is enclosed by the outer sealing portion, is arranged on an outside of the inner sealing portion and comprises a fastening attachment portion arranged to be fastened to a first side of the one of the heat transfer plates by an adhesive mechanism.

1 . A gasket arrangement comprising a sealing part for sealing between two heat transfer plates of a plate heat exchanger, which heat transfer plates each comprises a number >1 of port holes, and an attachment part, which is arranged to attach the gasket arrangement to one of the heat transfer plates, parallel lower and upper gasket planes defining an extension of the gasket arrangement in a thickness direction of the gasket arrangement, and lower and upper attachment planes, which are parallel to the lower and upper gasket planes, defining an extension of the attachment part of the gasket arrangement in the thickness direction of the gasket arrangement, wherein the lower gasket plane and the lower attachment plane are arranged to face said one of the heat transfer plates, and the upper gasket plane and the upper attachment plane are arranged to face another one of the heat transfer plates, the sealing part comprising an annular outer sealing portion, which is arranged to extend along at least a part of a respective outer edge of the heat transfer plates and enclose said portholes of the heat transfer plates, and an annular inner sealing portion, which is enclosed by the outer sealing portion and arranged to enclose at least one of the port holes of each of the heat transfer plates, the attachment part being enclosed by the outer sealing portion and arranged on an outside of the inner sealing portion, and the attachment part comprising a fastening attachment portion arranged to be fastened to a first side of said one of the heat transfer plates by an adhesive means, wherein lower and upper fastening attachment planes, which are parallel to the lower and upper gasket planes, define an extension of the fastening attachment portion of the attachment part in the thickness direction of the gasket arrangement, wherein the lower fastening attachment plane is arranged to face said one of the heat transfer plates and the upper fastening attachment plane is arranged to face said another one of the heat transfer plates. 
     
     
         2 . A gasket arrangement according to  claim 1 , wherein the outer sealing portion is separate from the inner sealing portion. 
     
     
         3 . A gasket arrangement according to  claim 1 , wherein the outer sealing portion and the inner sealing portion are partly integrally formed. 
     
     
         4 . A gasket arrangement according to  claim 1 , wherein the attachment part is connected to the inner sealing portion. 
     
     
         5 . A gasket arrangement according to  claim 1 , wherein the sealing part further comprises a diagonal sealing portion extending from a first portion of the outer sealing portion to a second portion of the outer sealing portion on an inside of the inner sealing portion, wherein the attachment part is connected to the diagonal sealing portion and arranged between the diagonal sealing portion and the inner sealing portion. 
     
     
         6 . A gasket arrangement according to  claim 5 , further comprising a bridge connecting the inner sealing portion and the diagonal sealing portion, wherein the fastening attachment portion of the attachment part and the bridge are connected. 
     
     
         7 . A gasket arrangement according to  claim 1 , which is arranged to define a flow path, between first and second port holes of the port holes of said one of the heat transfer plates, across the first side of said one of the heat transfer plates, wherein the attachment part of the gasket arrangement is arranged in the flow path. 
     
     
         8 . A gasket arrangement according to  claim 1 , wherein the fastening attachment portion of the attachment part is directly connected to the sealing part. 
     
     
         9 . A gasket arrangement according to  claim 1 , wherein the fastening attachment portion of the attachment part is arranged on a distance>0 from the sealing part. 
     
     
         10 . A gasket arrangement according to  claim 1 , wherein the upper attachment plane is arranged between the upper gasket plane and the lower attachment plane. 
     
     
         11 . A gasket arrangement according to  claim 1 , wherein the attachment part further comprises a first connection attachment portion connecting the fastening attachment portion and the sealing part, wherein lower and upper connection attachment planes, which are parallel to the lower and upper gasket planes, define an extension of the first connection attachment portion of the attachment part in the thickness direction of the gasket arrangement, wherein the lower connection attachment plane is arranged to face said one of the heat transfer plates and the upper connection attachment plane is arranged to face said another one of the heat transfer plates. 
     
     
         12 . A gasket arrangement according to  claim 11 , wherein the attachment part further comprises a second connection attachment portion separated from the first connection attachment portion connecting the fastening attachment portion and the sealing part to form a loop. 
     
     
         13 . A gasket arrangement according to  claim 11 , wherein the lower fastening attachment plane is arranged between the lower connection attachment plane and the upper gasket plane. 
     
     
         14 . A gasket arrangement according to  claim 11 , wherein the lower connection attachment plane coincides with at least one of the lower gasket plane and the lower attachment plane. 
     
     
         15 . A gasket arrangement according to  claim 11 , wherein the upper connection attachment plane coincides with at least one of the upper fastening attachment plane and the upper attachment plane. 
     
     
         16 . A gasket arrangement according to  claim 1 , wherein the fastening attachment portion comprises a longitudinally extending groove, a bottom of the groove extending in an intermediate fastening attachment plane extending between the lower and upper fastening attachment planes. 
     
     
         17 . A heat transfer plate comprising a number >1 of port holes and a gasket groove arranged to accommodate a sealing part of a gasket arrangement, which sealing part is arranged to seal between the heat transfer plate and another heat transfer plate of a plate heat exchanger, the heat transfer plate being corrugated so as to extend in, and between, parallel lower and upper plate extension planes, the heat transfer plate further comprising a structure arranged to cooperate with an attachment part of the gasket arrangement, which attachment part is arranged to attach the gasket arrangement to the heat transfer plate, a structure extension plane, which is parallel to the lower and upper plate extension planes, defining a lower extreme extension of said structure, wherein the gasket groove comprises an annular outer groove portion, which extends along at least a part of an outer edge of the heat transfer plate and encloses the portholes of the heat transfer plate, and an annular inner groove portion, which is enclosed by the outer groove portion and encloses at least one of the port holes of the heat transfer plate, wherein said structure is enclosed by the outer groove portion and arranged on an outside of the inner groove portion, and in that said structure, on a first side of the heat transfer plate, comprises a fastening structure portion to which a fastening attachment portion of the attachment part is arranged to be fastened by means of an adhesive means, a fastening structure plane, which is parallel to the lower and upper plate extension planes, defining an upper extreme extension of said fastening structure portion. 
     
     
         18 . A heat transfer plate according to  claim 17 , wherein the outer groove portion is separate from the inner groove portion. 
     
     
         19 . A heat transfer plate according to  claim 17 , wherein the outer groove portion and the inner groove portion are partly integrally formed. 
     
     
         20 . A heat transfer plate according to  claim 17 , wherein said structure is arranged in connection to the inner groove portion. 
     
     
         21 . A heat transfer plate according to  claim 17 , wherein the gasket groove further comprises a diagonal groove portion extending from a first portion of the outer groove portion to a second portion of the outer groove portion on an inside of the inner groove portion, wherein said structure is arranged in connection to the diagonal groove portion and arranged between the diagonal groove portion and the inner groove portion. 
     
     
         22 . A heat transfer plate according to  claim 17 , further comprising a flow path, between first and second port holes of the port holes, across the first side of said one of the heat transfer plates, wherein said structure is arranged in the flow path. 
     
     
         23 . A heat transfer plate according to  claim 17 , wherein the fastening structure portion of said structure is arranged directly adjacent to the gasket groove. 
     
     
         24 . A heat transfer plate according to  claim 17 , wherein the fastening structure portion of said structure is arranged on a distance>0 from the gasket groove. 
     
     
         25 . A heat transfer plate according to  claim 17 , wherein the fastening structure plane is arranged between the lower and upper plate extension planes. 
     
     
         26 . A heat transfer plate according to  claim 17 , wherein said structure further comprises a first connection structure portion extending between the fastening structure portion and the gasket groove, wherein a connection structure plane, which is parallel to the lower and upper plate extension planes, defines a lower extreme extension of the first connection structure portion, the first connection structure portion being arranged to accommodate a first connection attachment portion of the attachment part. 
     
     
         27 . A heat transfer plate according to  claim 26 , wherein said structure further comprises a second connection structure portion separated from the first connection structure portion, which second connection structure portion extends between the fastening structure portion and the gasket groove and is arranged to accommodate a second connection attachment portion of the attachment part. 
     
     
         28 . A heat transfer plate according to  claim 27 , wherein the first and second connection structure portions and the fastening structure portion enclose a projection of the heat transfer plate, which projection comprises a top extending in a top plane being parallel to, and extending above, the fastening structure plane. 
     
     
         29 . A heat transfer plate according to  claim 26 , wherein the connection structure plane coincides with at least one of the lower plate extension plane and the structure extension plane. 
     
     
         30 . A heat transfer plate according to  claim 26 , wherein the fastening structure plane is arranged between the connection structure plane and the upper plate extension plane. 
     
     
         31 . A kit comprising a gasket arrangement according to  claim 1  and an adhesive means applied on the fastening attachment portion of the gasket arrangement. 
     
     
         32 . An assembly comprising a gasket arrangement, a heat transfer plate according to  claim 17  and an adhesive means, the gasket arrangement comprising:
 a sealing part for sealing between two heat transfer plates of a plate heat exchanger, which heat transfer plates each comprises a number >1 of port holes, and an attachment part, which is arranged to attach the gasket arrangement to one of the heat transfer plates, parallel lower and upper gasket planes defining an extension of the gasket arrangement in a thickness direction of the gasket arrangement, and lower and upper attachment planes, which are parallel to the lower and upper gasket planes, defining an extension of the attachment part of the gasket arrangement in the thickness direction of the gasket arrangement, wherein the lower gasket plane and the lower attachment plane are arranged to face said one of the heat transfer plates, and the upper gasket plane and the upper attachment plane are arranged to face another one of the heat transfer plates, the sealing part comprising an annular outer sealing portion, which is arranged to extend along at least a part of a respective outer edge of the heat transfer plates and enclose said portholes of the heat transfer plates, and an annular inner sealing portion, which is enclosed by the outer sealing portion and arranged to enclose at least one of the port holes of each of the heat transfer plates, the attachment part being enclosed by the outer sealing portion and arranged on an outside of the inner sealing portion, and the attachment part comprising a fastening attachment portion arranged to be fastened to a first side of said one of the heat transfer plates by an adhesive means, wherein lower and upper fastening attachment planes, which are parallel to the lower and upper gasket planes, define an extension of the fastening attachment portion of the attachment part in the thickness direction of the gasket arrangement, wherein the lower fastening attachment plane is arranged to face said one of the heat transfer plates and the upper fastening attachment plane is arranged to face said another one of the heat transfer plates; 
 the adhesive means being applied between the fastening attachment portion of the gasket arrangement and the fastening structure portion of the heat transfer plate.