Plate heat exchanger
AssigneeThe A.P.V. Company Limited
InventorManouchahr F. Hessari
Life of this patent
Estimating the term…
Abstract
A problem with plate heat exchangers, particularly with a large number of plates arranged in Z formation is the maldistribution which give rise to partial starvation of the flow spaces (3) nearer the inlet end. It is intended to combat this by the provision of a distributor insert (9) in the inlet duct and, if necessary, a collector insert (20) in the discharge duct. The distributor (9) is intended to encourage flow into the flow spaces nearer the inlet end and to inhibit flow into those remote from the inlet end. The collector (20) is intended to increase the local flow velocity near the inlet end to reduce the pressure gradient due to the momentum effect. Refer to FIG. 2.
Claims16
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 asymmetric or Z arrangement with the supply and discharge ducts being fed from and discharged to opposte ends 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 inhibiting 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.