公开(公告)号：DE69224665T2

公开(公告)日：1998-10-01

申请号：DE69224665

申请日：1992-10-26

Applicant: ECOLAB INC

Inventor： BRADY DANIEL ,  MCCALL JOHN ,  BAILEY CLYDE ,  COPELAND JAMES

IPC: G01N27/10 ,  A47L15/44 ,  B08B3/10 ,  D06F39/02 ,  G05B13/02 ,  G05D21/00

Abstract: An apparatus and method for programming a detergent controller to vary the detergent concentration set-point according to the time of day and to achieve detergent concentration levels quickly without incurring overshoot. Thus, the present invention insures that the warewashing machine is operated at optimum efficiency and cost. To vary the set-point according to the time of day, the invention combines the features of a microprocessor, a clock and a controller into one unit. The user enters the time setting and set point into the controller. The microprocessor then compares the real-time clock signal with the user time settings and outputs an appropriate set-point value from the microprocessor to the controller. To achieve detergent concentration levels quickly without incurring overshoot, the controller senses the detergent concentration and dispenses the proper detergent level to the warewashing machine according to a predetermined detergent feed time based on the previous response time and the programmed set-point. Thus, the controller can change the response function if and when conditions change.

公开(公告)号：BR9510557A

公开(公告)日：1998-07-14

申请号：BR9510557

申请日：1995-12-12

Applicant: ECOLAB INC

Inventor： COPELAND JAMES L ,  BRADY DANIEL F ,  BAILEY CLYDE ,  MCCALL JOHN E JR

IPC: A47L15/44 ,  B08B20060101 ,  D06F39/02 ,  G05B20060101 ,  G05B13/02 ,  G05D20060101 ,  G05D11/00 ,  G05D11/02 ,  G05D21/02

Abstract: An apparatus and method for programming a controller to vary the concentration set-point of an additive as a function of time. The present invention insures that the additive is injected to the machine at proper times to allow for optimum efficiency and lowest cost. To vary the set-point according to the input parameters, the invention combines the features of a data entry device, a microprocessor, a clock, a controller, and sensors into one unit. The user may enter a time setting and set point into the controller, along with control parameters which allow the machine to control the additive injection based on different user-defined scenarios. The microprocessor then reads the settings and outputs an appropriate set-point value from the microprocessor to the controller. Thus, the user can manually or automatically change the response function if and when conditions change.

公开(公告)号：DE69224665D1

公开(公告)日：1998-04-09

申请号：DE69224665

申请日：1992-10-26

Applicant: ECOLAB INC

Inventor： BRADY DANIEL ,  MCCALL JOHN ,  BAILEY CLYDE ,  COPELAND JAMES

IPC: G01N27/10 ,  A47L15/44 ,  B08B3/10 ,  D06F39/02 ,  G05B13/02 ,  G05D21/00

Abstract: An apparatus and method for programming a detergent controller to vary the detergent concentration set-point according to the time of day and to achieve detergent concentration levels quickly without incurring overshoot. Thus, the present invention insures that the warewashing machine is operated at optimum efficiency and cost. To vary the set-point according to the time of day, the invention combines the features of a microprocessor, a clock and a controller into one unit. The user enters the time setting and set point into the controller. The microprocessor then compares the real-time clock signal with the user time settings and outputs an appropriate set-point value from the microprocessor to the controller. To achieve detergent concentration levels quickly without incurring overshoot, the controller senses the detergent concentration and dispenses the proper detergent level to the warewashing machine according to a predetermined detergent feed time based on the previous response time and the programmed set-point. Thus, the controller can change the response function if and when conditions change.