Apparatus and method for monitoring a sump pump

• US 5,672,050 A
• Filed: 08/04/1995
• Issued: 09/30/1997
• Est. Priority Date: 08/04/1995
• Status: Expired due to Fees

• Current Assignee: Lynn Electronics Corporation (NSI Industries, LLC)
• Original Assignee: Lynn Electronics Corporation (NSI Industries, LLC)
• Inventors: Webber, Daniel J., Ratulowski, Wesley
• Primary Examiner(s): Thorpe, Timothy
• Assistant Examiner(s): THAI, XUAN MARIAN
• Application Number:
  US08/511,255
• Time in Patent Office: 788 Days
• Field of Search: 417/18, 417/36, 417/38, 417/40, 417/41, 417/44.1, 417/44.2, 417/53, 417/63, 73/862.581, 73/753
• US Class Current: 417/18
• CPC Class Codes: F04B 2205/01 Pressure before the pump inlet
• CPC Class Codes: F04B 2207/70 Warnings
• CPC Class Codes: F04B 49/022 by means of pressure
• CPC Class Codes: F04D 13/068 Battery powered
• CPC Class Codes: F04D 15/0218 the condition being a liquid level or a lack of liquid supply
• CPC Class Codes: G01F 23/162 by a liquid column
• CPC Class Codes: G01F 23/18 Indicating, recording or alarm devices actuated electrically
• CPC Class Codes: G05D 9/12 characterised by the use of electric means

Abstract

An apparatus and method for monitoring and controlling a motor driven sump pump. The apparatus and method includes a power supply which powers the apparatus, a sensing portion which detects the level of the liquid within the sump, a control portion which turns the motor either off or on in response to the level of the liquid, and an alarm portion cooperating with the sensor which activates an alarm when a preselected level has been reached. The apparatus and method also includes power failure detection portion cooperating with the alarm portion which activates an alarm when a power failure occurs, a fault detection portion cooperating with the alarm portion which activates an alarm when the fault condition occurs, and a disabling portion which disables the pump when the fault detection portion detects a fault condition in the pump.

Claims

1. An apparatus for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising:

pressure sensing means for detecting a pressure resulting from the height of the upper surface of the liquid within the sump, and including a means for converting the detected resulting pressure into a continuous electrical signal, wherein the continuous electrical signal represents the height of the upper surface of the liquid within the sump; and

,

control means comparing the continuous electrical signal to a first preselected electrical signal level that represents at least a first preselected pressure for turning the motor either "on" or "off" when the detected pressure is either above or below the first preselected pressure.

2. The apparatus of claim 1 wherein the pressure sensing means includes a pressure sensing tube having an opening and a sensor therein, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting pressure in the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

3. The apparatus of claim 1 further including first alarm means cooperating with the pressure sensing means for activating an alarm when the detected pressure is above a second preselected pressure.

4. The apparatus of claim 3 wherein the pressure sensing means includes a pressure sensing tube having an opening and a sensor therein, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting pressure in the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

5. The apparatus of claim 3 further including

power means for supplying power to the apparatus;

power detection means for detecting a power failure in the power means; and

,

second alarm means for activating an alarm when the power detection means detects a power failure in the power means.

6. The apparatus of claim 5 wherein the pressure sensing means includes a pressure sensing tube having an opening and a sensor therein, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting pressure in the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

7. The apparatus of claim 5 further including

fault detection means for detecting a fault condition in the pump;

and,

third alarm means for activating an alarm when the fault detection means detects a fault condition in the pump.

8. The apparatus of claim 7 further including disabling means for disabling the pump when the fault detection means detects a fault condition in the pump.

9. The apparatus of claim 8 wherein the pressure sensing means includes a pressure sensing tube having an opening and a sensor therein, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting pressure in the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

10. An apparatus for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising:

power means for supplying power to the apparatus;

pressure sensing means for detecting a pressure resulting from the height of the upper surface of the liquid within the sump, and including a means for converting the detected resulting pressure into a continuous electrical signal, wherein the continuous electrical signal represents the height of the upper surface of the liquid within the sump;

control means comparing the continuous electrical signal to a first preselected electrical signal level that represents at least a first preselected pressure for turning the motor either "on" or "off" when the detected pressure is either above or below the first preselected pressure;

first alarm means cooperating with the sensor for activating an alarm when the detected pressure is above at least a second preselected pressure;

power detection means for detecting a power failure in the power means;

second alarm means for activating an alarm when the power detection means detects a power failure in the power means;

fault detection means for detecting a fault condition in the pump;

third alarm means for activating an alarm when the fault detection means detects a fault condition in the pump; and

,

disabling means for disabling the pump when the fault detection means detects a fault condition in the pump.

11. The apparatus of claim 10 wherein the pressure sensing means includes a pressure sensing tube having an opening and therein, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting pressure in the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

12. An apparatus for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising:

pressure sensing means for detecting both an atmospheric pressure and a pressure resulting from the height of the upper surface of the liquid within the sump;

conversion means for comparing the atmospheric pressure and the detected pressure resulting from the height of the upper surface of the liquid within the sump for generating a gauge pressure, and for converting the gauge pressure into a continuous electrical signal, wherein the continuous electrical signal represents the height of the upper surface of the liquid within the sump; and

,

control means cooperating with the conversion means for comparing the continuous electrical signal to a first preselected electrical signal level that represents at least a first preselected pressure, and for turning the motor either "on" or "off" when the gauge pressure is either above or below the first preselected pressure.

13. The apparatus of claim 12 wherein the pressure sensing means includes a pressure sensing tube having an opening and a sensor for detecting a differential pressure, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting the differential pressure between the pressure outside the tube and the pressure within the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

14. The apparatus of claim 12 further including first alarm means cooperating with the conversion means for activating an alarm when the gauge pressure is above at least one second preselected pressure.

15. The apparatus of claim 14 further including

power means for supplying power to the apparatus;

power detection means for detecting a power failure in the power means; and

,

second alarm means for activating an alarm when the power detection means detects a power failure in the power means.

16. The apparatus of claim 15 further including:

fault detection means for detecting a fault condition in the pump; and

,

third alarm means for activating an alarm when the fault detection means detects a fault condition in the pump.

17. The apparatus of claim 16 further including disabling means for disabling the pump when the fault detection means detects a fault condition in the pump.

18. The apparatus of claim 17 wherein the pressure sensing means includes a pressure sensing tube having an opening at one end and a sensor at an opposed end of the tube for detecting a differential pressure, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting the differential pressure between the pressure outside the tube and the pressure inside the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

19. The apparatus of claim 17 wherein the first alarm means cooperating with the conversion means for activating an alarm when the gauge pressure is above at least one second preselected pressure is connected to a first light emitting element that indicates when the alarm is activated, the second alarm means for activating an alarm when the power detection means detects a power failure in the power means is connected to a second light emitting element that indicates when the alarm is activated, and the third alarm means for activating an alarm when the fault detection means detects a fault condition in the pump is connected to a third light emitting element that indicates when the alarm is activated.

20. The apparatus of claim 15 further including

power backup means cooperating with the power detection means for activating when the power detection means detects a power failure in the power means;

and,

third alarm means for activating an alarm when the power backup means is activated.

21. The apparatus of claim 20 further including

fault detection means for detecting a fault condition in the pump;

and,

fourth alarm means for activating an alarm when the fault detection means detects a fault condition in the pump; and

,

disabling means for disabling the pump when the fault detection means detects a fault condition in the pump.

22. The apparatus of claim 21 wherein the pressure sensing means includes a pressure sensing tube having an opening and a sensor for detecting a differential pressure, the opening being submerged in and below the upper surface of the liquid within the sump and the sensor detecting the differential pressure between the pressure outside the tube and the pressure inside the tube, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

23. The apparatus of claim 22 wherein the first alarm means cooperating with the conversion means for activating an alarm when the gauge pressure is above at least one second preselected pressure is connected to a first light emitting element that indicates when the alarm is activated, the second alarm means for activating an alarm when the power detection means detects a power failure in the power means is connected to a second light emitting element that indicates when the alarm is activated, and the third alarm means for activating an alarm when the fault detection means detects a fault condition in the pump, the third alarm means being connected to a third light emitting element that indicates when the alarm is activated.

24. An apparatus for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising:

a plurality of sensors for detecting the height of the upper surface of the liquid within the sump, the plurality of sensors including a ground level sensor, a low level sensor, a high level sensor, and an overflow level sensor; and

,

control means cooperating with the sensors for at least turning the motor either "on" or "off" when the upper surface is either above or below one of the sensors.

25. The apparatus of claim 24 further including first alarm means cooperating with the sensors for activating an alarm when the detected level is above at least one of the plurality of sensors.

26. The apparatus of claim 25 wherein the plurality of sensors include a ground level sensor, a low level sensor, a high level sensor, and an overflow level sensor.

27. The apparatus of claim 25 further including

power means for supplying power to the apparatus;

power detection means for detecting a power failure in the power means; and

,

second alarm means for activating an alarm when the power detection means detects a power failure in the power means.

28. The apparatus of claim 27 further including:

fault detection means for detecting a fault condition in the pump; and

,

third alarm means for activating an alarm when the fault detection means detects a fault condition in the pump.

29. The apparatus of claim 28 further including disabling means for disabling the pump when the fault detection means detects a fault condition in the pump.

30. A method for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising the steps of:

detecting a pressure resulting from the height of the upper surface of the liquid within the sump;

converting the detected resulting pressure into a continuous electrical signal, wherein the continuous electrical signal represents the height of the upper surface of the liquid within the sump;

comparing the continuous electrical signal to a first preselected electrical signal level that represents at least a first preselected pressure; and

,

turning the motor either "on" or "off" when the detected pressure is either above or below the first preselected pressure.

31. The method of claim 30 further including the step of activating an alarm when the detected pressure is above at least one second preselected pressure.

32. The method of claim 30 further including the step of

supplying power to the sump pump;

detecting a power failure in supplying the power; and

,

activating an alarm when a power failure is detected.

33. The method of claim 32 wherein the step of detecting the pressure resulting from the height of the upper surface of the liquid within the sump includes the step of positioning a pressure sensing tube having an opening and a sensor therein, such that the opening is submerged in and below the upper surface of the liquid within the sump, and the step of detecting pressure in the tube with the sensor, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

34. The method of claim 33 further including the steps of

detecting a fault condition in the pump;

and,

activating an alarm when a fault condition is detected in the pump.

35. The method of claim 34 further including the step of disabling the pump when a fault condition is detected in the pump.

36. A method for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising the steps of

supplying power to the sump pump;

detecting a pressure resulting from the height of the upper surface of the liquid within the sump;

converting the detected resulting pressure into a continuous electrical signal, wherein the continuous electrical signal represents the height of the upper surface of the liquid within the sump;

comparing the continuous electrical signal to a first preselected electrical signal level that represents at least a first preselected pressure;

turning the motor either "on" or "off" when the detected pressure is either above or below the first preselected pressure;

activating an alarm when the detected pressure is above at least one second preselected pressure;

detecting a power failure in supplying the power;

activating an alarm when a power failure is detected;

detecting a fault condition in the pump;

activating an alarm when a fault condition is detected in the pump; and

,

disabling the pump when a fault condition is detected in the pump.

37. The method of claim 36 wherein the step of detecting the pressure resulting from the height of the upper surface of the liquid within the sump includes the step of positioning a pressure sensing tube having an opening and a sensor therein, such that the opening is submerged in and below the upper surface of the liquid within the sump, and the step of detecting pressure in the tube with the sensor, the pressure in the tube being proportional to the height of the upper surface of the liquid within the sump.

38. An apparatus for monitoring and controlling a motor driven sump pump for a sump having a liquid with a height of an upper surface of the liquid therein, comprising:

AC power means having an AC power level, for supplying power to the apparatus;

AC power detection means for the AC power level in the AC power means, and for creating a detected AC power level;

control means for comparing the detected AC power level to a first predetermined value that represents a first predetermined AC power level;

alarm means activated by the control means when the detected AC power level is above or below the first predetermined AC power level; and

,

pressure sensing means for detecting a pressure resulting from the height of the upper surface of the liquid within the sump, and including a means for converting the detected resulting pressure into a continuous electrical signal, wherein the continuous electrical signal represents the height of the upper surface of the liquid within the sump, and wherein the control means also compares the continuous electrical signal to a first preselected electrical signal level that represents at least a first preselected pressure for turning the motor either "on" or "off" when the detected pressure is either above or below the first preselected pressure.