Adaptive water level controls for water empty or fill applications

Patent metadata

Field	Value
Publication number	US-10895881-B2
Application number	US-201815927296-A
Country	US
Kind code	B2
Filing date	Mar 21, 2018
Priority date	Mar 21, 2017
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

A pump controller has a signal processor that receives signaling about an instant water level AI L of a liquid in a container and generated by a water level transducer during an empty/fill application; and determines corresponding signaling to control a pump during the empty/fill application based upon the signaling received using a liquid level control algorithm that turns ON the pump when the instant water level AI L rises above a maximum empty water level during an empty application, or falls below a maximum fill water level during a fill application; turns OFF the pump when the instant water level AI L falls below a minimum empty water level for the empty application, or rises above a second maximum fill water level during the fill application; controls the pump when the instant water level AI L is in a liquid level region above the minimum empty water level and below a second maximum empty water level for the empty application, or falls below the second maximum fill water level and above a second minimum fill water level during the fill application based upon a respective desired adaptive pressure set point SP* being defined from a respective adaptive liquid level control curve with respect to the instant water level AI L .

First claim

What we claim is:

1. Apparatus, including a pump system, for providing adaptive water level controls for an empty or fill application, comprising:
a pump controller having a signal processor configured to
receive signaling containing information about an instant water level AI L of a liquid in a container and generated by a water level transducer during an empty or fill application; and
determine corresponding signaling containing information to control a pump during the empty or fill application based upon the signaling received using a liquid level control algorithm that
turns ON the pump when the instant water level AIL either rises above a maximum empty water level during an empty application, or falls below a maximum fill water level during a fill application,
turns OFF the pump when the instant water level AIL either falls below a minimum empty water level for the empty application, or rises above a second maximum fill water level during the fill application,
controls the pump when the instant water level AIL is either in a liquid level region above the minimum empty water level and below a second maximum empty water level for the empty application, or falls below the second maximum fill water level and above a second minimum fill water level during the fill application, based upon a respective desired adaptive pressure set point SP* being defined from a respective adaptive liquid level control curve with respect to the instant water level AI L .

2. Apparatus according to claim 1 wherein the signal processor is configured to control the pump when the instant water level AI L is either in a second liquid level region above the second maximum empty water level and below the maximum empty water level for the empty application, or above the maximum fill liquid level and below the second minimum fill water level during the fill application, based upon the respective adaptive pressure set point SP* being a respective constant pressure set point.

3. Apparatus according to claim 1 wherein the pump controller is an adaptive water level controller.

4. Apparatus according to claim 1 wherein the apparatus comprises the water level transducer configured to sense the instant water level AIL of the liquid in the container and provide the signaling containing information about the same.

5. Apparatus according to claim 1 wherein if the pump is turned OFF, then the pump controller is configured to use the respective constant pressure set point when the pump is initially turned back ON.

6. A pump system for providing adaptive water level controls for an empty application, comprising:
a pump controller having a signal processor configured to
receive signaling containing information about an instant water level AIL of a liquid in a container and generated by a water level transducer during an empty application; and
determine corresponding signaling containing information to control a pump during the empty application based upon the signaling received using a liquid level control algorithm that
turns ON the pump when the instant water level AIL rises above a maximum empty water level,
turns OFF the pump when the instant water level AI L falls below a minimum empty water level, and
controls the pump when the instant water level AI L is in a liquid level region above the minimum empty water level and below a second maximum empty water level, based upon a respective desired adaptive pressure set point SP* being defined from a respective adaptive liquid level control curve with respect to the instant water level AI L .

7. A pump system according to claim 6 wherein the signal processor is configured to control the pump when the instant water level AI L is in a second liquid level region above the second maximum empty water level and below the maximum empty water level, based upon the respective adaptive pressure set point SP* being a respective constant pressure set point.

8. A pump system according to claim 6 wherein the pump controller is an adaptive water level controller.

9. A pump system according to claim 6 wherein the pump system comprises the water level transducer configured to sense the instant water level AI L of the liquid in the container and provide the signaling containing information about the same.

10. A pump system according to claim 6 wherein if the pump is turned OFF, then the pump controller is configured to use the respective constant pressure set point when the pump is initially turned back ON.

11. A pump system for providing adaptive water level controls for a fill application, comprising:
a pump controller having a signal processor configured to
receive signaling containing information about an instant water level AIL of a liquid in a container and generated by a water level transducer during a fill application; and
determine corresponding signaling containing information to control a pump during the fill application based upon the signaling received using a liquid level control algorithm that
turns ON the pump when the instant water level AI L falls below a maximum fill water level,
turns OFF the pump when the instant water level AI L rises above a second maximum fill water level, and
controls the pump when the instant water level AI L falls below the second maximum fill water level and above a second minimum fill water level, based upon a respective desired adaptive pressure set point SP* being defined from a respective adaptive liquid level control curve with respect to the instant water level AI L .

12. A pump system according to claim 11 wherein the signal processor is configured to control the pump when the instant water level AI L is above the maximum fill liquid level and below the second minimum fill water level, based upon the respective adaptive pressure set point SP* being a respective constant pressure set point.

13. A pump system according to claim 11 wherein the pump controller is an adaptive water level controller.

14. A pump system according to claim 11 wherein the pump system comprises the water level transducer configured to sense the instant water level AI L of the liquid in the container and provide the signaling containing information about the same.

15. A pump system according to claim 11 wherein if the pump is turned OFF, then the pump controller is configured to use the respective constant pressure set point when the pump is initially turned back ON.

16. A pump system for providing adaptive liquid/fluid level controls for an empty application and a fill application, comprising:
a pump controller having a signal processor configured to
receive signaling containing information about an instant liquid/fluid level AI L of a liquid/fluid in a container and generated by a liquid/fluid level transducer during an empty application and a fill application; and

determine corresponding signaling containing information to control a pump during the empty application and the fill application based upon the signaling received using a liquid/fluid level control algorithm that controls the pump when the instant liquid/fluid level AIL is either in a liquid/fluid level region above a minimum empty liquid/fluid level and below a maximum empty liquid/fluid level for the empty application, and falls below a maximum fill liquid/fluid level and above a minimum fill liquid/fluid level during the fill application, based upon a respective desired adaptive pressure set point SP* being defined from a respective adaptive liquid/fluid level control curve with respect to the instant liquid/fluid level AI L .

17. A pump system according t

Assignees

• Fluid Handling Llc

Inventors

• Cheng Andrew A
• Ruffo Matt
• Ruff Jordan

Classifications

• F04D15/0066 Primary

  by changing the speed, e.g. of the driving engine · CPC title

• G01F23/185

  for discrete levels · CPC title

• F04D15/0088

  Testing machines · CPC title

• G05D9/12

  characterised by the use of electric means · CPC title

• F04D15/0209

  responsive to a condition of the working fluid (F04D15/029 takes precedence) · CPC title