US 12,228,339 B2
Drying apparatus for powder raw material for manufacturing secondary cell with electric heater
Seung Hoon Yum, Gyeongsangnam-do (KR); and Nam Geol Lee, Gyeongsangnam-do (KR)
Assigned to KANGWON E-SOLUTION, Busan (KR); and KANGWON ENERGY CO., LTD., Jeollabuk-Do (KR)
Filed by KANGWON E-SOLUTION, Busan (KR); and KANGWON ENERGY CO., LTD., Jeollabuk-do (KR)
Filed on Sep. 23, 2022, as Appl. No. 17/952,113.
Claims priority of application No. 10-2022-0004341 (KR), filed on Jan. 11, 2022.
Prior Publication US 2023/0221072 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F26B 9/08 (2006.01); F26B 3/20 (2006.01); F26B 3/24 (2006.01); F26B 9/06 (2006.01); F26B 11/14 (2006.01); F26B 21/10 (2006.01); F26B 25/12 (2006.01)
CPC F26B 9/082 (2013.01) [F26B 3/20 (2013.01); F26B 3/24 (2013.01); F26B 9/063 (2013.01); F26B 11/14 (2013.01); F26B 21/10 (2013.01); F26B 25/12 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A drying apparatus for a powder raw material for manufacturing a secondary cell with an electric heater, the drying apparatus comprising:
a main body forming a chamber in which the powder raw material is accommodated;
a rotation shaft provided rotatably inside the main body and on which a blade is mounted for agitation of the powder raw material; and
the electric heater installed on an outer surface of the main body and providing heat so that the powder raw material is dried;
a plurality of heater temperature sensors installed on the outer surface of the main body and configured to detect the temperature of the electric heater; and
a sensor fixing device configured to fix the heater temperature sensors to the main body so that the heater temperature sensors is placed in contact with the electric heater or adjacent to the electric heater,
wherein the main body includes a cylindrical portion accommodating the rotation shaft and having a cylindrical shape, and first and second sidewalls forming both sidewalls of the cylindrical portion,
wherein the cylindrical portion and the first and second sidewalls include a plurality of heating regions partitioned to be heated by the electric heater, and
wherein the electric heater includes a plurality of heaters disposed in the plurality of heating regions and independently controllable with different outputs from each other,
wherein the electric heater is wrapped around an installation surface of the main body, extended by bending, or installed to be round with a spiral shape such that the electric heater includes a first heater line and a second heater line,
wherein the sensor fixing device includes a first accommodation portion accommodating the first heater line of the electric heater and the heater temperature sensors and a second accommodation portion accommodating the second heater line of the electric heater, and
wherein the first and second accommodation portions are fastened to the main body through a fastening mechanism.