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Apparatus for rinsing and chemically sanitizing food ware items

  • US 4,147,559 A
  • Filed: 02/07/1978
  • Issued: 04/03/1979
  • Est. Priority Date: 09/21/1977
  • Status: Expired due to Term
First Claim
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1. A sanitizing rinse system for use in a warewasher such as a dishwashing machine for supplying a predetermined quantity of rinse solution comprising fresh water and a chemical sanitizing agent uniformly distributed therein at a predetermined concentration, and for spraying the solution onto food ware items such as dishes within a chamber in the warewasher, the warewasher having a sump for retaining a quantity of wash water for spraying successive loads of food ware items during successive wash cycles, comprising:

  • (a) rinse nozzles for spraying the rinse solution onto the items within the chamber, the nozzles being connected and dedicated for spraying only the rinse solution,(b) a holding tank for accumulating a predetermined quantity of the rinse solution prior to spraying through said rinse nozzles,(c) a rinse pump connecting said holding tank to said rinse nozzles and controllable for pumping substantially all the rinse solution from the tank and onto the food ware items at a predetermined pressure and at a predetermined time during operation of the warewasher,(d) a source of fresh water at a temperature below effective bacteria killing temperatures and connected for introducing and circulating such fresh water into said holding tank, said source being openable and closeable for introducing fresh water when open and terminating the introduction thereof when closed,(e) a source of the chemical sanitizing agent connected and constructed for introducing a predetermined quantity thereof into said holding tank when actuated,(f) control means for controlling at least said fresh water and sanitizing agent sources for initiating filling of the predetermined quantity of rinse solution into said holding tank by opening said fresh water source and actuating said sanitizing agent source at predetermined times and closing said sanitizing agent source after a predetermined quantity of the agent has been supplied into said holding tank,(g) quantity sensing means for sensing the quantity of solution in said holding tank and closing said fresh water source when said holding tank contains the predetermined quantity of solution, and(i) said control means also controlling said rinse pump during operation of the warewasher to pump and spray substantially all of the predetermined quantity of rinse solution from said holding tank onto the food ware items at a predetermined time during operation of the warewasher.

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