US 11,717,015 B2
Roasting apparatus and controlling method thereof
Jong Wook Woo, Seoul (KR)
Assigned to STRONGHOLD TECHNOLOGY, INC., Seoul (KR)
Filed by STRONGHOLD TECHNOLOGY, INC., Seoul (KR)
Filed on Apr. 8, 2021, as Appl. No. 17/225,851.
Application 17/225,851 is a continuation of application No. PCT/KR2019/013156, filed on Oct. 8, 2019.
Claims priority of application No. 10-2018-0120922 (KR), filed on Oct. 11, 2018; application No. 10-2018-0120923 (KR), filed on Oct. 11, 2018; and application No. 10-2019-0124306 (KR), filed on Oct. 8, 2019.
Prior Publication US 2021/0219591 A1, Jul. 22, 2021
Int. Cl. A23N 12/12 (2006.01); H05B 1/02 (2006.01)
CPC A23N 12/125 (2013.01) [H05B 1/0269 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A roasting apparatus comprising:
a roasting chamber comprising a cylindrical wall defining an internal roasting space in which objects are to be roasted;
a hopper connected to the roasting chamber and configured to supply the objects to the roasting chamber;
a first heat source configured to supply a hot airflow to the internal roasting space of the roasting chamber, wherein the first heat source comprises an airflow mechanism for generating an airflow and a first heater for heating air being flown toward the internal roasting space;
a second heat source configured to heat the cylindrical wall of the roasting chamber, wherein the second heat source comprises a second heater that surrounds and is in contact with an exterior circumference of the cylindrical wall; and
a housing enclosing the roasting chamber and defining an external space that is outside the cylindrical wall of the roasting chamber,
wherein the roasting apparatus is configured to perform a preheating process prior to initiating roasting of objects in the internal roasting space,
wherein the preheating process is configured to heat the internal roasting space with the hot airflow by the first heat source and a conductive heat transfer from the second heat source to the cylindrical wall of the roasting chamber,
wherein in addition to heating the internal roasting space, the preheating process is configured to heat the external space outside the cylindrical wall by the second heater that surrounds the exterior circumference of the cylindrical wall.