The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1984
Filed:
Aug. 19, 1982
Keith E Brown, Solon, OH (US);
Jimmy D Buth, Chardon, OH (US);
Kinetico, Inc., Newbury, OH (US);
Abstract
A deionization method and apparatus comprising separate cation and anion removing sections 10a, 10b, the cation section having separate tanks 14, 16 and the anion section having separate tanks 24, 26. Respective cation and anion control valve assemblies 18, 28 control the fluid communication between various components of respective sections and control the regeneration cycle of exhausted cation and anion tanks, respectively. Each valve assembly includes independent water usage monitoring devices 118 which, upon sensing a predetermined quantity of water discharge by its respective valve assembly, effects regeneration of an associated tank. An exhausted cation tank is regenerated by feeding cation regeneration fluid by way of the cation control valve assembly into the exhausted cation tank in a counterflow direction for a predetermined time. Decationized water from the on-line cation tank is then passed through the exhausted cation tank in a counterflow direction to effect a counterflow rinse. An exhausted anion tank is similarly regenerated using an anion regeneration fluid and passing it through the exhausted tank in a counterflow direction, followed by a counterflow rinse using deionized water from the on-line anion tank. The anion section also includes a flushing circuit 46 that flushes residual anion regeneration fluid from a supply line 40a and the anion control valve assembly and also effects a counterflow slow rinse prior to a counterflow fast rinse. Water for the flushing step is obtained from a valve operating chamber 102a by way of a restricted passage 218 so that a back pressure in the piston chamber is maintained in order to exert a valve operating force on a valve 78 when necessary.