US 5,679,173 AGranted

Backup assembly and method for chemical sanitizing in a final rinse of a high temperature warewashing machine

OwnerJerry M. Hartmaninventor

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Abstract

The invention is directed to a method and assembly for sanitizing foodware in a sanitizing zone of a high temperature warewashing machine. The method comprises providing a source of fluid sanitizing material that is effective to sanitize foodware and sensing the temperature of final rinse water being used to sanitize foodware disposed within the sanitizing zone during a final rinse operation of the warewashing machine. An actuating signal is produced when a sensed temperature of the final rinse water is outside the preselected sanitizing temperature range. A sufficient amount of the fluid chemical sanitizing material is then provided in the final rinse water to sanitize foodware disposed in the sanitizing zone when the sensed temperature of the final rinse water is outside a preselected sanitizing temperature range.

Claims24

Dependent claims

In a high temperature warewashing machine wherein high temperature final rinse water is maintained at a sanitizing temperature of at least 180.degree. F. a sanitizing operation work zone into which high temperature final rinse water is directed to sanitize foodware disposed therein, a backup sanitizing assembly comprising:

a) container means for holding fluid sanitizing material that is effective to sanitize foodware disposed within said sanitizing operation work zone,
b) dispensing means for discharging said fluid sanitizing material for delivery to said final rinse water of said warewashing machine that is directed to said sanitizing operation work zone,
c) temperature sensing means for determining the temperature of said final rinse water being directed into said sanitizing operation work zone,
d) electrical coupling means for electrically arming said temperature sensing means to operate only when said high temperature final rinse water is directed to said sanitizing operation work zone and for directing an activating signal to said dispensing means,
e) upon said temperature sensing means being armed and said final rinse water is directed to the sanitizing operation work zone, said temperature sensing means being effective to activate said dispensing means with said activating signal to discharge said fluid sanitizing material in an amount sufficient to sanitize foodware disposed in said sanitizing operation work zone when final rinse water is determined by said temperature sensing means to be below said sanitizing temperature of said warewashing machine, and
f) delivery means connected to said final rinse water for directing said amount of fluid sanitizing material from said dispensing means to said sanitizing operation work zone.

3 more elements

A backup sanitizing assembly for a high temperature warewashing machine wherein high temperature final rinse water is maintained within a sanitizing temperature of at least 180.degree. F. in a final rinse operation and said machine having a sanitizing operation work zone into which said high temperature final rinse water is discharged to sanitize foodware disposed therein, said sanitizing assembly comprising:

a) container means disposed at a preselected location for holding fluid sanitizing material to sanitize foodware disposed within said sanitizing operation work zone of the warewashing machine,
b) dispensing means for discharging said fluid sanitizing material for delivery from said preselected location to said sanitizing operation work zone,
c) temperature sensing means for determining the temperature of said final rinse water being used to rinse foodware disposed within said sanitizing operation work zone,
d) said temperature sensing means being electrically connected directly to said dispensing means and including signal generating means for producing actuating signal means directed to said dispensing means when the temperature of said final rinse water is below said sanitizing temperature of said warewashing machine during said final rinse operation,
e) said dispensing means being responsive to said actuating signal means to discharge said fluid sanitizing material in an amount sufficient to sanitize foodware disposed in said sanitizing operation work zone, and
f) delivery means for directing said sufficient amount of fluid sanitizing material from said dispensing means to said final rinse water being used in said sanitizing operation work zone.

3 more elements

An assembly for sanitizing foodware in a sanitizing zone of a high temperature warewashing machine wherein high temperature final rinse water is maintained at a sanitizing temperature of at least 180.degree. F. in a sanitizing operation work zone into which said high temperature final rinse water is discharged to sanitize foodware disposed therein, said assembly comprising:

a) supply means providing a source of fluid sanitizing material that is effective to sanitize foodware,
b) temperature sensing means for monitoring the temperature of said final rinse water in said warewashing machine being used to sanitize foodware disposed within said sanitizing operation work zone during a final rinse operation of the warewashing machine, and
c) temperature-controlled dispensing means responsive to said temperature sensing means for providing an amount of said fluid sanitizing material in said final rinse water sufficient to sanitize foodware disposed in said sanitizing operation work zone when said final rinse water temperature is below said sanitizing temperature until the final rinse water temperature is restored to a temperature of at least 180.degree. F.

Dependencies are inferred from the claim text.