Patent ID: 9551530
Date: 2017-01-24
CPC Classifications: B22F,B30B,F27D

Claim:
1. A pressing arrangement for treatment of articles by hot isostatic pressing comprising a pressure vessel comprising: a furnace chamber comprising a heat insulated casing and a furnace adapted to hold the articles; the furnace chamber comprising a load compartment adapted to hold articles to be treated, said load compartment being arranged with at least one top opening and at least one bottom opening, wherein a flow of pressure medium through the load compartment is allowed; a fan and a fan shaft coupled thereto arranged at the load compartment for circulating the pressure medium within the furnace chamber and for enhancing an inner convection loop, in which inner convection loop pressure medium has an upward flow through said load compartment and a downward flow along a peripheral portion of the furnace chamber; and at least one flow generator arranged for generating the flow of pressure medium into said load compartment to enhance said inner convection loop, said flow being generated by transporting pressure medium upwards from a space below a bottom insulating portion and above a bottom end portion and injecting said pressure medium into said load compartment by way of a transport pipe having an inlet arranged within the space that is below the fan, a midsection coupled to the inlet and parallel to the fan shaft and extending through the bottom insulating portion and into the load compartment, and an outlet coupled to the midsection and arranged above the fan, with the outlet extending past the fan within the load compartment so as to be downstream of the fan with respect to the upward flow of pressure medium through the load compartment to enhance said inner convection loop.