Plate heat exchanger
AssigneeThe A.P.V. Company Limited
InventorManouchahr F. Hessari
Life of this patent
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Abstract
In a plate heat exchanger, particularly with a large number of plates in a pass, one of the problems is the port losses arising from uneven distribution between the flow spaces in the pass. In accordance with the present invention in order to divert flow away from the inlet and outlet end of a U arrangement pass, there is provided in the inlet duct a distribution (9) in the form of a tube (12) having external fins (15) an external annulus (17) and a flow straightening extension (18) mounted on locating rods (13a). In the discharge duct there is provided a collector (11) also in the form of tubes having an inlet aperture (23) and an external annulus (22).
Claims14
In a plate heat exchanger comprising a pack of plates arranged in spaced face-to-face relationship to define flow spaces between adjacent plates, the plates having aligned holes therein which form ducts for the supply and discharge of media to and from the flow spaces, the arrangement of the ducts for at least one medium being of symmetric or U arrangement with the supply and discharge ducts being fed from and discharged to the same end of the pack:
- the improvement that an insert is provided in the supply duct for the said at least one medium to assist in distribution of the medium along the pack of plates by increasing the flow to the flow spaces near the end of the pack remote from the inlet end of the supply duct.
Dependencies are inferred from the claim text.