Batch furnace for annealing material and method for heat treatment

A method for heat treatment of a furnace material in a batch furnace,

• the batch furnace comprising:
• a furnace housing comprising a closable charging opening,
• a transfer assembly for convective heat transfer onto the furnace material by a heat transfer medium, the transfer assembly comprising
• a first fan and a second fan, each fan disposed within the furnace housing, each fan comprising an intake side and a pressure side, a first heating device associated with the first fan and a second heating device associated with the second fan, wherein each heating device is for heating the heat transder medium and each heating device is disposed directly in front of the intake side of the respective fan, and
• a receiving chamber for receiving the furnace material,
• wherein the receiving chamber is disposed on the respective pressure side of the first fan and the pressure of the second fan for directly receiving the heat transfer medium from each fan,
• wherein the receiving chamber directly adjoins the pressure side of the first fan and the pressure side of the second fan;
• wherein the furnace housing comprises a first face-side wall element and a second face-side wall element, the first face-side wall element and the second face-side wall element for opening and closing the receiving chamber, each face-side wall element axially displaceable in a longitudinal direction of the furnace housing;
• and
• wherein a first assembly comprises the first face-side wall element, the first fan, and the first heating device;
• wherein the first face-side wall element is connected to the first fan and to the first heating device;
• wherein a second assembly comprisies the second face-side wall element, the second fan, and the second heating device;
• wherein the second face-side wall element is connected to the second fan and to the second heating heating device;
• wherein the two assemblies displace axially;
• the method comprising the steps of:
• (a) arranging in the receiving chamber the furnace material,
• (b) blowing, by the first fan and the second fan, the heat transfer medium onto the furnace material for convective heat transfer.

A batch furnace for annealing a furnace material, the batch furnace comprising:

• a furnace housing comprising a closable charging opening;
• a transfer assembly for convective heat transfer onto the furnace material by a heat transfer medium, the transfer assembly comprising
• at least one inlet for receiving the heat transfer medium after the heat transfer medium has been heated externally from outside the batch furnace, a first fan and a second fan, each fan comprising an intake side and a pressure side, wherein each fan is disposed within the furnace housing;
• a receiving chamber for receiving the furnace material,
• wherein the receiving chamber is disposed on the pressure side of the first fan and the pressure side of the second fan for directly receiving the heat transfer medium from each fan,
• wherein the receiving chamber directly adjoins the pressure side of the first fan and the pressure side of the second fan;
• wherein the furnace housing comprises a first face-side wall element and a second face-side wall element, the first face-side wall element and the second face-side wall element for opening and closing the receiving chamber, each face-side wall element axially displaceable in a longitudinal direction of the furnace housing;
• and
• where a first assembly comprises the first face-side wall element, the first fan, and a first heating device;
• wherein the first face-side wall element is connected to the first fan and to the first heating device;
• wherein a second assembly comprises the second face-side wall element, the second fan, and a second heating device;
• wherein the second face-side wall element is connected to the second fan and to the second heating device;
• and
• wherein the two assemblies displace axially.

A batch furnace for annealing a furnace material, the batch furnace comprising:

• a furnace housing comprising a closable charging opening;
• a transfer assembly for convective heat transfer onto the furnace material by a heat transfer medium, the transfer assembly comprising
• a first fan and a second fan, each fan disposed within the furnace housing, each fan comprising an intake side and a pressure side, a first heating device associated with the first face and a second heasting device associated with the second fan, wherein each heating device is for heating the heat transfer medium and each heating device is arranged directly behind the pressure side of the respective fan;
• a receiving chamber for receiving the furnace material, the receiving chamber disposed on the respective pressure side of the first fan and the pressure side of the second fan for directly receiving the heat transfer medium from the fans;
• wherein the furnace housing is divided and comprises an axially-separable housing part which during operating of the furnace forms at least partially the receiving chamber, the receiving chamber directly adjoins the pressure side of the first fan and the pressure side of the second fan;
• wherein the furnace housing comprises a first face-side wall element and a second face-side wall element, the first face-side wall element and the second face-side wall element for opening and closing the receiving chamber, each face-side wall element axially displaceable in a longitudinal direction of the furnace housing;
• and
• wherein a first assembly comprises the first face-side wall element, the first fan, and the first heating device;
• wherein the first face-side wall element is connected to the first fan and to the first heating device;
• wherein a second assembly comprises the second face-side wall element, the second fan, and the second heating device;
• wherein the second face-side wall element is connected to the second fan and to the second heating device;
• and
• wherein the two assemblies displace axially.