초록 ▼

A dispenser for dispensing and a method of dispensing an ingredient for a machine. An ingredient feed mechanism dispenses the ingredient to the machine. A controller is capable of controlling an amount of the ingredient delivered to the machine by varying an amount of time the ingredient feed mechan

A dispenser for dispensing and a method of dispensing an ingredient for a machine. An ingredient feed mechanism dispenses the ingredient to the machine. A controller is capable of controlling an amount of the ingredient delivered to the machine by varying an amount of time the ingredient feed mechanism is active. The controller has a demand mode which varies the amount of time the ingredient feed mechanism is active as a function of a parameter obtained from the machine. The controller compares the amount of time the ingredient feed mechanism is active with a reference value and switches to a timed mode if the amount of time deviates from the reference value. The controller may have an initial training mode which measures the amount of time the ingredient feed mechanism is active establishes the reference value based upon the amount of time the ingredient feed mechanism is active.

대표청구항 ▼

1. A method of dispensing ingredient for a machine, said machine have a ingredient feed mechanism operatively coupled to dispense said ingredient to said machine and adapted to receive said ingredient; and a controller capable of controlling an amount of said ingredient delivered to said machine by

1. A method of dispensing ingredient for a machine, said machine have a ingredient feed mechanism operatively coupled to dispense said ingredient to said machine and adapted to receive said ingredient; and a controller capable of controlling an amount of said ingredient delivered to said machine by varying an amount of time said ingredient feed mechanism is active, comprising the steps of:varying, in a demand mode, said amount of time said ingredient feed mechanism is active as a function of a concentration of said ingredient in said machine;comparing said amount of time said ingredient feed mechanism is active with a reference value;switching to a time mode in which said ingredient is delivered as a function of time if said amount of time deviates from said reference value beyond a first predetermined deviation;which first, in a training mode, measure said amount of time said ingredient feed mechanism is active over a predetermined period of time while delivering said ingredient in accordance with said parameter and establishes said reference value based upon said amount of time said ingredient feed mechanism is active. 2. A method of dispensing as in claim 1 wherein said amount of time is determined by a moving average. 3. A method of dispensing as in claim 2 wherein said moving average is determined by an FIR filter having a time constant of at least one hour. 4. A method of dispensing as in claim 3 wherein said time constant is at least three hours. 5. A method of dispensing as in claim 4 wherein said time constant is between three hours and four hours. 6. A method of dispensing detergent for a warewashing machine, said warewashing machine have a detergent feed mechanism operatively counted to dispense said detergent to said warewashing machine and adapted to receive said detergent; and a controller capable of controlling an amount of said detergent delivered to said warewashing machine by varying an amount of time said detergent feed mechanism is active, comprising the steps of:varying, in a demand mode, said amount of time said detergent feed mechanism is active as a function of a concentration of said detergent in said warewashing machine;comprising said amount of time said detergent feed mechanism is active with a reference value;switching to a timed mode in which said detergent is delivered as a function of time if said amount of time deviates from said reference value beyond a first predetermined deviation;which first, in a training mode, measure said amount of time said detergent feed mechanism is active over a predetermined period of time while delivering said detergent in accordance with said parameter and establishes said reference value based upon said amount of time said detergent feed mechanism is active. 7. A method of dispensing as in claim 6 wherein said amount of time is determined by a moving average. 8. A method of dispensing as in claim 7 wherein said moving average is determined by an FIR filter having a time constant of at least one hour. 9. A method of dispensing as in claim 8 wherein said time constant is at least three hours. 10. A method of dispensing as in claim 9 wherein said time constant is between three hours and four hours.