Sump pump drive system

Details Sump pump drive system Sump pump drive system

1992-05-04

1993-08-10

Bertsch, Richard A.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

417 45, F04D 1500

Patent

active

052343197

ABSTRACT:
The invention is an improvement in a sump pump drive system of the type operable in a normal or emergency mode, powered in the normal mode by a single phase AC source and having an AC-to-DC converter, a DC standby source, a sump pump and a pump drive motor. In the improved system, the drive motor is a poly-phase AC machine and the system further comprises a DC-to-AC inverter connected to the drive motor. The pump is driven using inverted DC power in both normal and emergency modes. For the first time, the system designer can select an "ideal" pump configuration (especially including speed), then an ideal motor configuration (especially including number of poles) and configure the system for a frequency to drive the pump and motor at that speed. Variants of the improved system include low rated motor terminal voltage (not more than the battery terminal voltage), a variable frequency capability for tailoring motor speed (and therefore, pumping rate) to sump water level and "soft" start and stop. Such variants also include a battery "exercise" feature and battery charging features extending battery life and returning the battery more quickly to a full-charge condition.

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Glentronics Product Brochure (The Basement Watchdog)--2 pages (date unknown).
Aquanot Product Brochure (Full Time Flood Protection)--2 pages (date unknown).
Aquanot Product Brochure (Safeguard Pump Comparison Sheet)ACE--1 pages (date unknown).
Aquanot Product Brochure (Safeguard Pump Comparison Sheet) Zoeller--1 page (date unknown).
Basement Flood Protector Product Brochure--2 pages (date unknown).
Wayne Scott Fetzer Product Brochure--1 page (date unknown).
Expert Product Brochure--1 page (date unknown).
F. E. Myers Water Ace Product Brochure--1 page (date unknown).
Simer Product Brochure--1 page (date unknown).

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