Global patent index - EP 1000306 A1

EP 1000306 A1 2000-05-17 - VACUUM DRYING DEVICE

Title (en)

VACUUM DRYING DEVICE

Title (de)

VAKUUMTROCKNUNGSEINRICHTUNG

Title (fr)

DISPOSITIF DE SECHAGE A VIDE

Publication

EP 1000306 A1 (DE)

Application

EP 98943848 A

Priority

  • DE 19734212 A
  • EP 9804883 W

Abstract (en)

[origin: DE19734212A1] The invention relates to a vacuum drying device. Said device has a sealed housing (3) into which bulk material or a liquid can be fed, via an input opening (1). The dried material or the residual distillation liquid is able to leave the housing via an output opening (2). The interior of the housing (30) is connected to the suction side of a vacuum pump (12). Several heating plates (4) are also located in the housing interior, the material being moved through between said heating plates (4). The inventive device is characterised in that the heating plates (4) are configured with heating-medium channels (41) with inlets (41') and outlets (41'') and in that an auxiliary pump or auxiliary fan (14) is provided. The suction side of said auxiliary pump or auxiliary fan (14) is connected to a material- or liquid-free area of the housing interior (30) and its pressure side is connected to the inlets (41') of the heating-medium channels (41). In addition, the outlets (41'') are connected to the suction side of the vacuum pump (12) and a conveying device is provided for moving the material through between the heating plates (4). Separate conveying means (5) located between the heating plates (4) and/or the heating plates themselves can be moved by means of said conveying device in such a way that they oscillate.

IPC 1-7 (main, further and additional classification)

F26B 5/04; F26B 3/22; F26B 17/00; F26B 23/00

IPC 8 full level (invention and additional information)

F26B 5/04 (2006.01); F26B 17/00 (2006.01); F26B 17/12 (2006.01)

CPC (invention and additional information)

F26B 5/041 (2013.01); F26B 17/003 (2013.01); F26B 17/008 (2013.01); F26B 17/128 (2013.01)

Citation (search report)

See references of WO 9908058A1

Designated contracting state (EPC)

AT CH DE LI NL

EPO simple patent family

DE 19734212 A1 19990211; DE 19734212 B4 20071011; EP 1000306 A1 20000517; WO 9908058 A1 19990218

INPADOC legal status

2001-09-26 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20010731

2001-02-07 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20001222

2000-05-17 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000302

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE LI NL