EP 1087259 A1 20010328 - Solution feeding apparatus and solution feeding method
Title (en)
Solution feeding apparatus and solution feeding method
Title (de)
Verfahren und Vorrichtung zur Lösungszufuhr
Title (fr)
Méthode et dispositif d'alimentation de solution
Publication
Application
Priority
- JP 26294499 A 19990917
- JP 2000256027 A 20000825
Abstract (en)
To obtain a solution feeding apparatus and a solution feeding method that are capable of feeding solution from a container until the container is completely empty while maintaining a precise feeding rate to the end of the feeding process, said apparatus and the method having the effect described above regardless of whether intrusion of a large quantity of air into a solution channel is unavoidable, which tends to happen when a container is connected to an apparatus by using a method other than a penetration method or when a plurality of small containers are connected to an apparatus. Means of Attaining the Object A solution feeding apparatus including a solution-feeding pump connected via, a tube to a container which hermetically contains a solution and is capable of changing its shape in accordance with the amount of its content is provided with a gas-liquid separation tank and a gas detection sensor, said gas-liquid separation tank serving to separate gas from solution and disposed in the portion of the apparatus between the container and the pump, and the gas detection sensor disposed in the gas-liquid separation tank and serving to detect gas that has entered the solution channel. An air pump is operated in sync with the gas detection sensor so as to discharge gas out of the gas-liquid separation tank, thereby constantly maintaining gas in the solution channel at a given quantity. The apparatus is also provided with a solution depletion sensor adapted to detect reduction of the pressure in the solution channel, which pressure reduction results from depletion of the solution in the container. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 49/10 (2006.01); F04B 53/06 (2006.01); G03D 3/06 (2006.01)
CPC (source: EP)
G03D 3/06 (2013.01)
Citation (search report)
- [A] EP 0714047 A2 19960529 - KODAK LTD [GB], et al
- [A] EP 0741326 A1 19961106 - KODAK LTD [GB], et al
- [A] US 5488447 A 19960130 - PATTON DAVID L [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00119926 A 20000913; JP 2000256027 A 20000825