Diaphragm pump control for airbed applications
AssigneeSizewise Rentals, L.L.C.
InventorsDavid Delroy Driscoll, Jr., James A. Rodrain, David Brian Scott
Life of this patent
Estimating the term…
Abstract
An air pump unit having an AC diaphragm air pump and a DC Motor driver circuit. The AC diaphragm air pump has a winding with a first AC power connection at a first end of the winding and a second AC power connection at a second end of the winding. The DC motor driver circuit is configured to provide an OUT1 signal to the first AC power connection and an OUT2 signal to the second AC power connection. The OUT1 and OUT2 signals are each DC square waveforms having a frequency that corresponds to a motor frequency setting. Each of the OUT1 and OUT2 DC square waveforms are 180 degrees out of phase.
Claims20
An air pump unit comprising:
- an AC diaphragm air pump comprising a winding having a first AC power connection at a first end of the winding and a second AC power connection at a second end of the winding;
- and
- a DC motor driver circuit configured to provide an OUT1 signal to the first AC power connection and an OUT2 signal to the second AC power connection, wherein the OUT1 and OUT2 signals are each DC square waveforms having a frequency that corresponds to a desired motor frequency setting, and wherein each of the OUT1 and OUT2 DC square waveforms are 180 degrees out of phase.
An air bed system comprising:
- an air mattress having at least one chamber;
- and
- an air pump unit that is operably attached to the air mattress, wherein the air pump unit comprises:
- an AC diaphragm air pump comprising a winding having a first AC power connection at a first end of the winding and a second AC power connection at a second end of the winding;
- and
- a DC motor driver circuit configured to provide an OUT1 signal to the first AC power connection and an OUT2 signal to the second AC power connection, wherein the OUT1 and OUT2 signals are each DC square waveforms having a frequency that corresponds to a desired motor frequency setting, and wherein each of the OUT1 and OUT2 DC square waveforms are 180 degrees out of phase.
A method of operating an air pump unit comprising:
- providing an AC diaphragm air pump comprising a winding having a first AC power connection at a first end of the winding and a second AC power connection at a second end of the winding;
- and
- using a DC motor driver circuit, providing an OUT1 signal to the first AC power connection;
- using the DC motor driver circuit, providing an OUT2 signal to the second AC power connection;
- wherein the OUT1 and OUT2 signals are each DC square waveforms having a frequency that corresponds to a desired motor frequency setting, and
- wherein each of the OUT1 and OUT2 DC square waveforms are 180 degrees out of phase.
Dependencies are inferred from the claim text.