Drying apparatus

Patent metadata

Field	Value
Publication number	US-9982941-B2
Application number	US-201514832196-A
Country	US
Kind code	B2
Filing date	Aug 21, 2015
Priority date	Feb 26, 2013
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

A drying apparatus includes a furnace body; a conveyor belt configured to move in an interior space of the furnace body, with an object to be dried loaded thereon; and a plurality of infrared heaters arranged above the conveyor belt in the interior space of the furnace body. A division wall is provided, which divides the interior space of the furnace body into a space S 1 including the conveyor belt and a space S 2 including the infrared heaters. In the division wall, first portions located at positions corresponding to the respective infrared heaters in the longitudinal direction are made of a material that transmits infrared radiation, whereas second portions located at positions corresponding to respective spaces between adjacent infrared heaters in the longitudinal direction are made of a material that does not transmit infrared radiation.

First claim

What is claimed is:

1. A drying apparatus that dries an object to be dried containing a solvent, the drying apparatus comprising:
a furnace body;
a movable body configured to move in an interior space of the furnace body, with the object loaded thereon;
an infrared heater disposed above the movable body in the interior space of the furnace body;
a division wall configured to divide the interior space of the furnace body into a first space including the movable body and a second space including the infrared heater, the division wall being partially or entirely made of a material that transmits infrared radiation, wherein
the infrared heater comprises a plurality of infrared heaters arranged along a direction of travel of the movable body at a plurality of points spaced from each other in the second space, and
the division wall comprises a plurality of first portions located at positions corresponding to the respective infrared heaters in the direction of travel of the movable body, the first portions are made of a material that transmits infrared radiation, whereas a plurality of second portions of the division wall are located at positions corresponding to respective spaces between adjacent ones of the infrared heaters in the direction of travel of the movable body, the second portions are made of a material that does not transmit infrared radiation;

a transmittance regulating unit for varying an infrared transmittance of the first portions of the division wall in accordance with a position in a direction orthogonal to the direction of travel of the movable body; and
first gas supply/discharge unit for supplying a first gas having a regulated temperature and humidity to the first space, and discharging the first gas supplied to the first space from the first space.

2. The drying apparatus according to claim 1 , further comprising second gas supply/discharge unit for supplying a second gas different from the first gas to the interior space of the furnace body, and discharging the second gas supplied to the interior space from the interior space.

3. A method for manufacturing a dry body using the drying apparatus according to claim 1 , the method comprising, while the first gas supply/discharge unit is supplying the first gas to the first space and discharging the supplied first gas from the first space and the infrared heater is emitting infrared radiation toward the division wall,
moving the movable body carrying the object in the first space to dry the object to manufacture the dry body.

4. A method for manufacturing a dry body using the drying apparatus according to claim 2 , the method comprising, while the first gas supply/discharge unit is supplying the first gas to the first space and discharging the supplied first gas from the first space and the infrared heater is emitting infrared radiation toward the division wall,
moving the movable body carrying the object in the first space to dry the object to manufacture the dry body.

Assignees

• Ngk Insulators Ltd

Inventors

• Fujita Shuhei
• Yoshida Shinya
• Tsuji Hiroyuki

Classifications

• B05D3/0263

  with IR heaters · CPC title

• F26B3/30

  from infrared-emitting elements {(by radiation emanating from passages containing heated fluids other than combustion gases F26B23/10)} · CPC title

• F26B3/283 Primary

  in combination with convection · CPC title

• F26B13/10 Primary

  Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials (heating processes F26B3/00) · CPC title