Patent ID: 7533872

Claim:
An oxygen generator comprising: a body portion comprising: a fan portion which is installed in an upper portion of a separator to absorb the external air wherein the separator separates an inner area of the oxygen generator in a widthwise direction, a compressor which is installed in a lower portion of the separator to generate the high pressure of the compressed air, a valve manifold assembly which is switched on/off according to an oxygen discharge flow rate adjusted by a user to control the supply of the compressed air provided from the compressor, and an absorption tower comprising an adapter which is supplied with the compressed air passing through the valve manifold assembly to generate the high purity of concentrated oxygen and includes a plurality of ports formed on a top portion and a bottom portion outside of a bed housing; a cover portion comprising: a front cover and a rear cover which are disposed on a front and a rear of the body portion respectively, and side covers which are detachably disposed on both a left side and a right side, and on a top of the body portion; a humidifier tank being installed in a mounting portion put in the front cover to humidify the dry concentrated oxygen, generated from the absorption tower, and then supply the humidified concentrated oxygen, and comprising a cam adjuster wherein the cam adjuster is coupled with an adjustment knob moving in the widthwise direction so that the humidifier tank is fixed on a top of the mounting portion when the humidifier tank moves up, and moves from the top to a lower portion of the mounting portion and thereby is readily withdrawn; a display portion being installed in a front top portion of the body portion to display a purity state of oxygen that the user is currently inhaling, a discharge flow rate thereof, and a malfunction for the user's recognition; a switch portion comprising: a first switch which is installed adjacent to the display portion to switch on/off the oxygen generator, and a second switch which selectively adjusts an oxygen discharge flow rate; and a control portion receiving a signal according to a manipulation of the switch portion to control an amount of air supplied from the compressor to the absorption tower and a number of revolutions of the compressor, and control unstable oxygen when the unstable oxygen is generated from the oxygen generator.