| 摘要 |
PROBLEM TO BE SOLVED: To provide a function to announce a power failure alarm in an oxygen concentrator using a momentary switch as an operation switch.SOLUTION: An oxygen concentrator using a momentary switch as an operation switch includes an operation mode switching means to switch an operation mode by handling the momentary switch, an operation mode recording means to record an operation mode, a means to control the oxygen concentrator based on the recorded operation mode, a power failure alarm generation means, and a back-up power supply means, wherein the oxygen concentrator emits a power failure alarm by the power failure alarm generation means when power supply has stopped while the operation mode is ON, or when the power supply mode recorded by the operation mode recording means is switched to ON by the operation mode switching means while the power is not supplied. |
