Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28B—STEAM OR VAPOUR CONDENSERS
  • F28B9/00—Auxiliary systems, arrangements, or devices
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
  • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
  • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
  • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
  • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another

Definitions

• Cross- and counter flow plate heat exchanger wherein he ports are provided with flanged, joined rims around part of their periphery.
• the present invention relates to an arrangement in a plate heat exchanger according to the pre-characterising clause of claim 1.
• recuperator is already known from the E-C Parsons Government/Industry Meeting 2 Summary on "Development, Fabrication and Application of a Primary Surface Gas Turbine Recuperator” held in Washington, D.C. on 20-23 May 1985.
• the flow channels which have cross-flow and counter- flow sections, connect here via the inlet and exhaust ports with separate manifolds arranged outside the actual set of heat exchanger plates and welded to the set of heat exchanger plates.
• Integrating manifolds into the plates by providing the plates with openings with splayed flanges placed around the edge of the openings is already known from DE-A-29 23 944.
• the said flanges telescope into one another to form the walls of the manifolds and indentations in the flanges form inlet and outlet ports of the said manifolds.
• the object here was to produce a design that is resistant to mechanical stresses and easy to manufacture. No method of controlling the flow into and out of the manifolds is disclosed in the publication.
• the object of the present invention is to produce an improved plate heat exchanger of the type described in the pre-characterising clause of claim 1. This is achieved by the combination of characteristic features described in the characterising part of claim 1. Advantageous embodiments will be seen from the subordinate clauses.
• figure 1 is a perspective view of a plate heat exchanger according to the invention.
• Figures 2 and 3 show sections through the heat exchanger plates in two different positions, marked in figure 1.
• Figure 4 shows a perspective view of an alternative embodiment of a plate heat exchanger according to the invention.
• FIG 1 generally denotes a plate heat exchanger according to the invention, preferably a recuperator, with flow channels arranged between the plates.
• every other channel is designed to receive the flow of a heat-emitting medium, in this case exhaust gases from a gas turbine.
• the direction of flow for these is indicated in figure 1 by an arrow 2 and the person skilled in the art will appreciate that in order to control the exhaust gas flow a surrounding casing with connections for the inlet and outlet exhaust gas flows is required.
• the remainder of the flow channels are designed to accommodate the flow of a heat-absorbing medium, in this case compressed air from the gas turbine compressor.
• the inlet flow from the latter to the recuperator is indicated by an arrow 3 and the outlet flow by an arrow 4.
• the flow 3 of heat-absorbing medium in the recuperator 1 passes via a manifold 8, which connects with the manifold 8 via inlet ports in each flow channel for the heat- absorbing medium. There is a corresponding connection via outlet ports in each flow channel to a manifold 9 for the flow 4 of heat-absorbing medium out of the recuperator.
• the inlet ports are connected to section 6 of the through- flow channels, whereas the outlet ports are connected to section 7 of the through- flow channels.
• an opening 9' In the plates from which the recuperator is constructed, an opening 9', with side wall 10 running around the edge 9" of the opening 9', is made in one section on two opposing sides a, b.
• the said side wall is inclined somewhat inwards towards the opening 9'.
• an interruption 10' In a section of the side wall 10 adjoining the section 7 there is an interruption 10'.
• the side walls 10 With the side walls of the plates telescoped in one another as shown in figure 2 and joined pressure-tightly to one another, for example by soldering, the side walls 10 form the walls of the manifold 9 and the interruptions 10' form the outlet ports 10", which connect the manifold 9 to the through-flow channels for the heat-absorbing medium.
• the said through- flow channels are denoted by 11, whilst the flow of the heat-absorbing medium is indicated by arrows 4'.
• the through- flow channels for the heat-emitting medium are correspondingly indicated by 12.
• the interruption 10' is preferably formed in the side wall 10 of each plate in such a way that, as shown diagrammatically in figure 3, the side wall section 10'" corresponding to the interruption 10' is bent so that it forms an angle x with the plane of the plates.
• the side wall section 10'" is thereby made to form a guide for the flow of heat-absorbing medium through the inlet and outlet ports 10".
• Figure 4 shows that the outer walls of the manifolds, as well as the short sides of the recuperator in an alternative embodiment, are bent outwards.
• the splayed form gives increased strength, which improves the service life of the recuperator.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20406660

Family Applications (1)

Country Status (7)

Cited By (3)

Families Citing this family (1)

Citations (14)

• 1997
  • 1997-04-22 SE SE9701489A patent/SE511072C2/sv not_active IP Right Cessation
• 1998
  • 1998-04-21 EP EP98917925A patent/EP0977972A1/en not_active Withdrawn
  • 1998-04-21 KR KR1019997009667A patent/KR20010020122A/ko not_active Application Discontinuation
  • 1998-04-21 AU AU70956/98A patent/AU7095698A/en not_active Abandoned
  • 1998-04-21 WO PCT/SE1998/000717 patent/WO1998048230A1/en not_active Application Discontinuation
  • 1998-04-21 BR BR9808959-5A patent/BR9808959A/pt not_active Application Discontinuation
  • 1998-04-21 JP JP54559998A patent/JP2002501604A/ja active Pending

Patent Citations (14)

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