Pressing arrangement

A pressing arrangement, the pressing arrangement including a pressure vessel comprising:

• a furnace chamber including a furnace, wherein
• the furnace chamber is at least in part surrounded by a heat insulated casing,
• the furnace chamber includes a load compartment located within the furnace chamber, the load compartment configured to hold at least one article to be treated, wherein the furnace chamber is configured to enable a flow of a pressure medium through the load compartment,
• the furnace chamber includes at least one pressure medium guiding passage at least in part defined between the heat insulated casing and the load compartment, the at least one pressure medium guiding passage in fluid communication with the load compartment so as to at least partially define an inner convection loop,
• the furnace chamber is configured to guide the pressure medium in the inner convection loop to flow in one of two opposite circulation directions through the load compartment, through the at least one pressure medium guiding passage of the furnace chamber, and back to the load compartment;
• and
• at least one adjustable throttle that is configured to selectively obstruct a pressure medium flow in at least a portion of the at least one pressure medium guiding passage of the furnace chamber to selectively obstruct a flow of the pressure medium in the inner convection loop, wherein the at least one adjustable throttle is configured to controllably and selectively obstruct the pressure medium flow in the at least one pressure medium guiding passage of the furnace chamber,
• wherein the pressing arrangement is configured to treat the at least one article based on hot pressing, the treating of the at least one article including
• at least one heating phase, in which the at least one article is heated, and
• at least one cooling phase, in which the at least one article is cooled, wherein the at least one adjustable throttle is configured to
• obstruct the pressure medium flow in at least the portion of the at least one pressure medium guiding passage of the furnace chamber during the at least one cooling phase, and
• not obstruct the pressure medium flow in at least the portion of the at least one pressure medium guiding passage of the furnace chamber during the at least one heating phase,
• wherein the heat insulated casing includes
• a heat insulating portion, and
• a housing partly enclosing the heat insulating portion,
• wherein the heat insulated casing has a pressure medium guiding passage formed between portions of the heat insulating portion and the housing, the pressure medium guiding passage of the heat insulated casing being in fluid communication with the furnace chamber so as the at least partially define an outer cooling loop and being configured to guide pressure medium from the furnace chamber to flow towards a top end closure of the pressure vessel to a space between the top end closure and the furnace chamber, wherein a heat absorbing element is arranged within the space between the top end closure and the furnace chamber.