Performance monitoring system for warewashing machines

• US 5,038,807 A
• Filed: 04/16/1990
• Issued: 08/13/1991
• Est. Priority Date: 04/16/1990
• Status: Expired due to Term

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab, Inc.
• Inventors: Koehler, Eduardo S., Padelford, Eric L., Brady, Daniel F., Bailey, Clyde A.
• Primary Examiner(s): Stinson, Frankie L.
• Application Number:
  US07/509,992
• Time in Patent Office: 484 Days
• Field of Search: 134/56 R, 134/56 D, 134/57 D, 134/58 D, 134/57 R, 134/58 L, 134/131, 68/12 R, 340/309.2, 364/267.6, 364/550.01
• US Class Current: 134/57.00D
• CPC Class Codes: A47L 15/4293 Arrangements for programme selection, e.g. control panels; Indication of the selected programme, programme progress or other parameters of the programme, e.g. by using display panels

Abstract

A system for monitoring the performance of a warewashing machine generates proactive alarms that audible and/or visibly instruct operators to take corrective action of temperature, rinse pressure, loading, or other machine deficiencies occur. A data input feature enables the operator to add production data to the report for the calculation of machine efficiency. A water consumption measurement device provides realistic utility, water and sewage costs calculations for the warewashing machine.

Claims

1. An apparatus for monitoring a warewashing machine, comprising:

(a) sensor means for detecting alarm conditions in the warewashing machine;

(b) input means connected to the sensor means for receiving signals therefrom indicating the alarm condition;

(c) activation means connected to the input means for notifying an operator when the alarm condition has occurred;

(d) recording means connected to the input means for storing an indication of the alarm condition in a memory for later reporting;

(e) reset means for temporarily disabling the activation means for notifying the operator of the alarm condition; and

(f) timer means for specifying a time period for the temporarily disabled alarm so that when the time period elapses the operator is once again notified by the activation means that the alarm condition has occurred.

2. The apparatus of claim 1, wherein the recording means further comprises means for timestamping and recording an operational history of the machine for an extended period of time.

3. The apparatus of claim 2, further comprising reporting means connected to the input means for generating an alarm detail report that allows an operator to determine the number of times alarm conditions occurred.

4. An apparatus for monitoring a warewashing machine, comprising:

(a) sensor means for detecting an active rinse cycle in the warewashing machine;

(b) input means connected to the sensor means for receiving signals therefrom indicating the active rinse cycle;

(c) recording means connected to the input means for recording an elapsed time period for the active rinse cycle;

(d) calculating means connected to the recording means for calculating a water consumption value using the elapsed time period and a known flow rate; and

(e) reporting means connected to the calculating means for reporting the water consumption value.

5. An apparatus for monitoring a warewashing machine, comprising:

(a) first input means for receiving data from an operator indicating a total value of a customer'"'"'s production;

(b) first recording means connected to the first input means for recording a total value of a customer'"'"'s production;

(c) sensor means for detecting an active warewashing machine;

(d) second input means connected to the sensor means for receiving signals therefrom indicating the active warewashing machine;

(e) second recording means connected to the second input means for recording an elapsed time period for the active warewashing machine;

(f) calculating means connected to the second recording means for calculating a total value of operating hours using the elapsed time period; and

(g) reporting means connected to the first and second recording means for reporting a comparison between the total value of a customer'"'"'s production and the total value of the machine'"'"'s operating hours.

6. An apparatus for monitoring a warewashing machine, comprising:

(a) sensor means for detecting operational information in the warewashing machine;

(b) data entry means for inputting production information;

(c) recording means, connected to the sensor means and the data entry means, for storing indications of the operational information and the production information in a memory for later reporting; and

(d) reporting means, connected to the recording means, for comparing the production values with the operational information and printing efficiency information determined therefrom.

7. The apparatus of claim 6, wherein the operational information comprises a total number of operating hours for the machine.

8. The apparatus of claim 6, wherein the operational information comprises a total number of conveyer operating hours for the machine.

9. The apparatus of claim 8, wherein the operational information comprises a total number of rinse operating hours for the machine.

10. The apparatus of claim 6, wherein the production information comprises a total number of meals produced.

11. The apparatus of claim 6, wherein the production information comprises a total number of man hours of labor incurred by the machine.

12. The apparatus of claim 6, wherein the reporting means further comprises means for comparing a total number of rinse hours to a total number of operating hours, and thereby reporting a loading efficiency for the machine.

13. The apparatus of claim 6, wherein the reporting means further comprises means for comparing a total number of conveyer operating hours to a total number of operating hours, and reporting a conveyer efficiency for the machine.

14. The apparatus of claim 6, wherein the reporting means further comprises means for comparing a total number of meals processed to a total number of operating hours, and reporting an operating efficiency for the machine.

15. The apparatus of claim 6, wherein the reporting means further comprises means for dividing a total number of meals processed to a total number of rinse operating hours, and reporting a processing efficiency for the machine.