Apparatus and method for controlling output of an oxygen concentrator
US5746806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Aug 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D21/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for controlling the output of an oxygen concentrator wherein an oxygen concentrator indicator is comprised of an oxygen sensor monitor and circuit board which receives a gas sample from the concentrator, the oxygen concentrator indicator circuit board converts the concentration of oxygen to a DC voltage range from 0 to 1 volt corresponding to 0% to 100% oxygen. A plurality of set-point amplifiers accept the voltage and feed the voltage to a logic block where the voltage is analyzed to insure that only one of a plurality of solid state relays or switches is energized at a time. A plurality of taps on an AC motor winding are selectively energized by the solid state relays to drive the oxygen concentrator at a pre-determined rate in response to the concentration of oxygen generated by the concentrator. In addition, where other types of motors are employed, such as a linear motor, similar type controls may be provided for regulating the actuation of the linear motor for generating reciprocal motion for operations of the oxygen concentrator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.