Solid product dispenser and method and apparatus to control dispensing rate of a solid product with changing temperature

(19)

(11)

EP 1 980 315 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	29.10.2008 Bulletin 2008/44

(43)	Date of publication A2:
	15.10.2008 Bulletin 2008/42

(21)	Application number: 08013057.8

(22)	Date of filing: 14.10.2005

(51)

International Patent Classification (IPC):

B01F 1/00^(2006.01)

A47L 15/44^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

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Priority:

18.10.2004 US 619783 P
18.10.2004 US 619727 P
15.06.2005 US 152917
15.06.2005 US 152940

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	05808958.2 / 1814649

(71)	Applicant: ECOLAB INC.
	St. Paul MN 55102-2233 (US)

(72)	Inventors:
	Thomas, John E. River Falls WI 54022 (US) Plantikow, Robert J Orfordville WI 53576-9406 (US) Berg, Thomas P. Greensboro NC 27410 (US) Batcher, Thomas Mendota Heights MN 55118 (US) Brady, Daniel F. High Point NC 27265 (US) Russell, Scott T. Woodbury MN 55125 (US) Everson, Terrence P. Eagan MN 55123 (US)

(74)	Representative: Polypatent
	An den Gärten 7 51491 Overath 51491 Overath (DE)

(54)	Solid product dispenser and method and apparatus to control dispensing rate of a solid product with changing temperature

(57) A dispenser (10) uses first and second flow controls (70, 73). The flow controls maintain first and second flow ranges independent of diluent pressure within a pressure range, wherein the use solution's concentration is maintained over the pressure range. A third flow control (75) may also be utilized in a third diluent passageway for maintaining a third flow range independent of the diluent pressure within the pressure range. A bypass valve assembly (41) is operatively connected to the third incoming diluent passageway. The bypass valve has a temperature control valve. The temperature control valve having a bypass passageway, wherein additional diluent is added to the use solution, thereby controlling the use solution's concentration.

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