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Air blower

Air blower description/claims

The present invention relates generally to an air blower including a sirocco-fan, turbo blower and the like.

The conventional air blower supports rotatably the shaft of the impeller via the ball bearing, sleeve bearing, bearing, oil retaining bearing.

It does not allow the air blower with such bearing to rotate at high speed so that it is difficult to downsize and it has a short life span because it needs certain large size of the impeller.

In addition, for the air blower which is attached an impeller to a motor with a core, eddy-current loss and hysteresis loss of the core become large as it rotates on high speed.

Accordingly, it is an object of the present invention to provide an air blower which can rotate at a high speed, blow in under high pressure at large air volume even though it is small size and is economical and long-lived.

In addition, it is another object of the present invention to provide an air blower which can control to move an impeller to a thrust direction extremely with blowing and protect an impeller to hit a case body. Also it is still another object of the present invention to provide an air blower which can reduce oscillation and noise.

The present invention is understood to encompass embodiments which include all or only a portion of the above objects, features and advantages which, unless recited in claims defining the invention, are understood not to limit interpretation of such claims. The above, and other objects, features and advantages of the present invention will become apparent from the following description read in conjunction with the accompanying drawings, in which like reference numerals designate the same elements.

It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only, and are not intended as a definition of the limits of the invention.

Accordingly, the air blower includes a case body having an air suction mouth formed at least one side surface thereof and an outlet formed at a peripheral wall thereof, a motor which is installed into the case body, having a fluid dynamic bearing; and an impeller which is fixed to a rotation member of the motor in order to locate at an outer circumferential part of the motor, suctioning air from the air suction mouth by rotating and discharging from the outlet.

FIG. 1 is a plan view showing a first embodiment of the present invention;

FIG. 2 is a front view showing a first embodiment of the present invention;

FIG. 3 is a bottom view showing a first embodiment of the present invention;

FIG. 4 is a plan view showing the way in which a covering case is removed;

FIG. 5 is a cross sectional view taken along a line 5-5 in FIG. 1;

FIG. 6 is a cross sectional view of a motor showing a first embodiment of the present invention;

FIG. 7 is an explanation of an impeller showing a first embodiment of the present invention;

• Provisional Patent
• Utility Patent

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