(19)
(11) EP 1 172 491 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.01.2003 Bulletin 2003/01

(43) Date of publication A2:
16.01.2002 Bulletin 2002/03

(21) Application number: 01114249.4

(22) Date of filing: 12.06.2001
(51) International Patent Classification (IPC)7: E03F 1/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 11.07.2000 US 614463

(71) Applicant: Evac International Oy
00380 Helsinki (FI)

(72) Inventor:
  • Palffy von, Björn
    29535 Bromölla (SE)

(74) Representative: Habersack, Hans-Jürgen, Dipl.-Ing. 
Patentanwälte Zipse & Habersack, Wotanstrasse 64
80639 München
80639 München (DE)

   


(54) Apparatus for dissipating foam in a vacuum collection tank


(57) A vacuum collection tank (12) having apparatus for dissipating foam is disclosed. The vacuum collection tank (12) is connected to a vacuum generator (16) to create a vacuum level in the tank. A transport pipe (20) is also connected to the tank to allow flow of waste water into the tank (12). A drain (22,24) is provide at a bottom of the tank (12) for discharging the contents of the tank. A foam detector (32) is provided for sensing foam inside the (12) tank and triggering a discharge operation, thereby to remove the foam from the tank. Alternatively, an anti-foam assembly may be provided for discharging an anti-foam agent into the tank, wherein the anti-foam agent is discharged in response to a foam signal from the foam detector.






Search report