| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a part of high concentration oxygen supplied to a user from being consumed uselessly.SOLUTION: When a start of an inhalation time is detected in respiration cycles each consisting of inhalation and breathing, an oxygen mask is supplied with: high concentration oxygen normally supplied by an oxygen supplying device; and high concentration oxygen stored in an oxygen tank. When high concentration oxygen is deficient relative to inhalation volume of a user, air is supplied (oxygen supplying mode). Supply of high concentration oxygen is stopped simultaneously with a termination of effective inhalation time from the start of inhalation. During a remaining time of the inhalation time and a breath time, high concentration oxygen which can be normally supplied is stored in the oxygen tank from an oxygen supplying means (oxygen storing mode). In addition, in next inhalation, the high concentration oxygen stored in the oxygen tank during the former respiration and high concentration oxygen normally supplied from oxygen supplying means are supplied to the user.</p> |
