Solid state sump pump control

• US 8,641,384 B2
• Filed: 08/29/2011
• Issued: 02/04/2014
• Est. Priority Date: 08/31/2007
• Status: Active Grant

• Current Assignee: Memphis Light Gas & Water Division of City of Memphis
• Original Assignee: Memphis Light Gas & Water Division of City of Memphis
• Inventors: Bourell, Alfred M. Jr., Cox, Ricky W., Morton, David K., Truitt, Roderick C., Washington, Curtis T.
• Primary Examiner(s): Freay, Charles
• Assistant Examiner(s): Hamo, Patrick
• Application Number:
  US13/220,300
• Publication Number:
  US 20110311381A1
• Time in Patent Office: 890 Days
• Field of Search: 417/36, 417/44.1, 732/90.R
• US Class Current: 417/44.1
• CPC Class Codes: F04B 47/06 having motor-pump units situated at great depth
• CPC Class Codes: F04D 15/0218 the condition being a liquid level or a lack of liquid supply

Abstract

The present invention provides a sump pump control system. The system includes a mounting fixture fabricated from a corrosion resistant material, and an electrical control comprising solid state electrical components supported by the mounting fixture. The sump pump control system also includes a diving bell cover. The diving bell cover has an open bottom, and is dimensioned to cover the electrical components. The diving bell cover is releasably secured to a support surface of the mounting fixture. The electrical control controls the operation of a sump pump. Should water rise to a level of the electrical components due to failure of the sump pump or due to quickly rising water, the diving bell cover will prevent water from contacting the electrical components. A method of removing water from a subterranean vault is also provided herein.

Claims

1. A sump pump control system, comprising:

a mounting fixture comprising a support surface and a mounting plate, wherein the support surface comprises at least two through-openings for receiving wiring bundles;

an electrical control comprising solid state electrical components connected to a chassis, wherein the chassis is supported on the support surface of the mounting fixture;

a terminal strip on the chassis for electrically connecting to the wiring bundles;

a diving bell cover having an open bottom and being releasably secured to the support surface of the mounting fixture, the diving bell cover being configured to encompass the electrical components on the support surface in an unsealed state during operation; and

wherein;

the electrical control controls the operation of a sump pump, and

the electrical components are mounted onto the chassis at a position above the bottom of the diving bell cover such that water will not contact the electrical components in the event that water surrounds the diving bell cover.

2. The sump pump control system of claim 1, further comprising:

an externally operable test switch.

3. The sump pump control system of claim 2, wherein the externally operable test switch comprises a magnetic reed switch, and the sump pump further comprises:

a permanent magnet that may be passed over the diving bell cover in order to momentarily turn on the sump pump.

4. The sump pump control system of claim 1, wherein the electrical components are coated with a clear waterproof coating.

5. The sump pump control system of claim 4, further comprising:

the sump pump, wherein the sump pump is part of a sump pump assembly that comprises a common probe, an “

on”

probe and an “

off”

probe.

6. The sump pump control system of claim 1, further comprising:

at least one latch for releasably securing the diving bell cover to the support surface of the mounting fixture, the at least one latch being fabricated from an elastomeric material.

7. The sump pump control system of claim 1, wherein the electrical components comprise:

a solid state circuit board; and

a solid state power relay.

8. The sump pump control system of claim 7, wherein the electrical components further comprise:

a hermetically sealed control relay;

a socket;

a transformer for stepping down voltage to the control system; and

a terminal strip.

9. The sump pump control system of claim 1, wherein:

the electrical components comprise a digital counter for counting each on/off cycle of the sump pump; and

the mounting fixture and the chassis are both fabricated from a corrosion resistant material.

10. The sump pump control system of claim 1, further comprising:

a desiccant cartridge for absorbing moisture.

11. The sump pump control system of claim 1, wherein the electrical components are mounted onto the chassis at a position above the mounting surface and above the bottom of the diving bell cover such that water will not contact the electrical components in the event that water covers the diving bell cover by at least twenty feet.

12. The sump pump control system of claim 11, wherein:

the mounting fixture is secured to a wall or other vertical surface; and

the support surface is substantially horizontal.

13. The sump pump control system of claim 12, wherein:

the wiring bundles comprise a first bundle having control wiring electrically connecting the solid state electrical components and the sump pump, and a second bundle having power wiring connected to a power supply.