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1. An oxygen generator comprising:
an upper casing having a plurality of first installing perforations formed around a periphery of the upper casing and for passing a corresponding quantity of engaging members respectively; a second installing perforation disposed in the upper casing for passing a long locking member; two large circular seats disposed in the upper casing and each having a bottom edge coupled to an air-sealing gasket, with each large circular seat disposed in the upper casing having an engaging slot formed therein, with an upwardly oriented exit inwardly communicated with a first channel, wherein when the first channel is communicated with the upper casing, an air inlet is passed downwardly to outside; a concave circular groove formed in the upper casing and disposed between the two large circular seats disposed in the upper casing and for plugging an air-sealing gasket therein, with the concave circular groove having a first through hole and a first airway upwardly passing out from the first through hole and backwardly extending and passing out from a second through hole; a locking slot formed in the upper casing and downwardly penetrating into a depth and passing out from a second airway and then backwardly extended out from a third through hole; an air inlet hole formed through the upper casing; an oxygen output solenoid valve installed on the upper casing, and disposed between the third through hole communicated with the second through hole formed at the concave circular groove of the upper casing and the second through hole communicated with the locking slot, wherein when the oxygen output solenoid valve is opened, the second through hole communicated with the third through hole formed at the concave circular groove of the upper casing is interconnected to the second through hole communicated with the locking slot; a base having a top area and a bottom area, with a plurality of first large perforations formed in the top area, with a center of the plurality of first large perforations corresponsive to a center of the engaging slot, with a plurality of second large perforations formed in the bottom area, with a center of the plurality of second large perforations corresponsive to the center of the engaging slot, with a location between the top area and the bottom area and corresponsive to the plurality of first and second large perforations and a portion of a periphery of the base being a large opening, with only the location between the plurality of large perforations coupled by a front wall, a rear wall and a middle connecting column, with a periphery of the top area having a first engaging hole configured to be corresponsive to the plurality of first installing perforations of the upper casing for passing and securing a corresponding engaging member of the upper casing into the first engaging hole when the upper casing covers the top area, with a periphery of the bottom area having a second engaging hole, with the middle connecting column having an installing through slot formed and longitudinally penetrated through the middle connecting column; an air intake tank, an air release silencing barrel and an installation space divided into an upper position and a lower position, and an oxygen storage tank, wherein the installing through slot is provided for passing the long locking member of the upper casing; wherein the air intake tank is configured to be corresponsive to the air inlet hole; wherein the air release silencing barrel is provided for discharging and buffering air therein; wherein the installation space is opened upwardly and has a fourth through hole penetrated through the rear wall; wherein the oxygen storage tank is opened downwardly, wherein the oxygen storage tank is blocked and sealed by an oxygen output regulating valve, wherein oxygen is outputted from the oxygen output regulating valve; wherein the top area has a sixth through hole configured to be corresponsive to a position of the air inlet of the upper casing and penetrated downwardly into the rear wall, wherein the sixth through hole is a longitudinal channel communicated with a transverse channel and passed into the oxygen storage tank; wherein the oxygen output regulating valve is attached into the installation space, with an adjusting knob aligned precisely and passed through the fourth through hole; a lower casing having a plurality of third installing perforations formed around a periphery of the lower casing for passing an equal amount of engaging members one by one respectively and having a fourth installing perforation formed at a position proximate to a middle of the lower casing for passing the long locking member; two large circular seats disposed at the lower casing and coupled to air-sealing gaskets, with each large circular seat disposed in the lower casing having an engaging slot formed therein and a downwardly formed exit communicated with a downwardly formed through hole, with the downwardly formed through hole having a third channel communicated with the downwardly formed through hole, with one downwardly formed through hole extended to a side of the lower casing and communicated with a downwardly extended engaging base; with another downwardly formed through hole passing out from the engaging slot and interconnecting a fourth channel and passing out from a further through hole, with an additional through hole passing through the fourth channel having a still further through hole passed into an air release channel, with an air release opening formed at a rear of the air release channel being corresponsive to an air release silencing barrel of the base; a connecting base being formed at a bottom of the lower casing and covering the fourth installing perforation and an air outlet hole; with a top of the lower casing having a non-penetrating concave groove formed between the air release channel and plugging the air-sealing gasket; with the lower casing attached onto a bottom area of the base, with the fourth installing perforation of the lower casing attached to the installing through slot of the base, wherein the long locking member passing through the installing through slot passes through the fourth installing perforation of the lower casing; with the air outlet hole of the lower casing attached to the air intake tank; with the air release silencing barrel of the base enclosing and covering the air release channel and the air release opening exposed from the lower casing; with the oxygen storage tank of the base abutting the air-sealing gasket in the non-penetrating concave groove, wherein the oxygen storage tank is air-tightly sealed; with each engaging member passing into the third installing perforation of the lower casing installed and secured into the second engaging hole of the bottom area of the base; an air pump having a connecting base configured to be corresponsive to the connecting base of the lower casing, with the connecting base of the air pump having a locking hole and an air inlet hole formed therein, wherein when the connecting base of the lower casing is embedded into the connecting base of the air pump, the locking hole is attached to the fourth installing perforation in the connecting base of the lower casing for passing and securing the long locking member that passes through the fourth installing perforation of the lower casing; with the air inlet hole attached to the air outlet hole formed in the connecting base of the lower casing; with each side of the air pump inserted from an air outlet tube into the engaging base of the lower casing and communicated with the other of the downwardly formed through hole; with the air pump sucking air through the air inlet hole and the air outlet hole and entering the air from the air inlet hole into the air intake tank by driving a cam by a motor, with the cam operated to compress the air, with air pressure sent sequentially at different times to the air outlet tubes and through the engaging base, and entering from the other of the downwardly formed through hole into the third channel of the lower casing; a gas intake solenoid valve installed at the lower casing and disposed between the one downwardly formed through hole downwardly passing through the third channel and the other downwardly formed through hole downwardly passing out from the engaging slot of the lower casing, wherein when the air pump is turned on, the one downwardly formed through hole downwardly passing out from the third channel is communicated with the other downwardly formed through hole downwardly passing out from the engaging slot of the lower casing, wherein high-pressure air rushes upwardly out from an exit communicated with the engaging slot; an air release solenoid valve installed at the lower casing and disposed between the fourth channel and the air release channel, wherein when the gas intake solenoid valve is closed, high-pressure gas at the exit of the engaging slot downwardly passes out from the other downwardly formed through hole to enter into the fourth channel and reach the further through hole, wherein when the air release solenoid valve is opened, the gas in the fourth channel is transferred into the air release channel and discharged from air release opening into the air release silencing barrel of the base; and first and second molecule tubes each being a longitudinal cylindrical body filled with a molecular sieve material and having an upper casing portion and a lower casing portion, with an airtight plastic strip embedded into an external periphery of each of the upper casing portion and the lower casing portion for sealing air when the airtight plastic strip is latched securely to a top and a bottom of the molecule tube; with an exterior of the upper casing portion being tapered to form an upper plug, with the airtight plastic strip embedded into the upper plug, with the upper casing portion having an umbrella shaped non-return rubber plate inserted into the upper plug, with a passage formed within a range covering the umbrella shaped non-return rubber plate and penetrated through the upper casing portion; with the lower casing being tapered to form a lower plug with the airtight plastic strip embedded into the lower plug, with the upper plug of the molecule tube passing through one of the plurality of third large perforations of the base and precisely aligned and plugged into a corresponding engaging slot of the upper casing, with the molecule tube being pushed into the second large perforation corresponsive to the bottom area of the base, with the lower plug being precisely aligned and plugged into a corresponding engaging slot of the lower casing, wherein the upper plug of the molecule tube provides an airtight effect between the airtight plastic strip and the corresponding engaging slot, wherein the molecule tube abuts the air-sealing gasket connected to a corresponding large circular seat of the upper casing to achieve the airtight effect, wherein the lower plug of the molecule tube provides an airtight effect between the airtight plastic strip and the corresponding engaging slot, and wherein the molecule tube abuts the air-sealing gasket connected to a corresponding large circular seat of the lower casing to achieve the airtight effect. |
