Abstract: An impeller rotates about a central axis and includes a cup portion having a bottom portion and a cylindrical portion, a base portion, and a plurality of vanes. The impeller further includes a plurality of rib portions, formed on a surface of a side opposite to another side of the base portion where the vanes are provided, wherein each of the rib portions is disposed axially opposite to at least a portion of a corresponding one of the vanes, and the rib portion and the vane are separated by the base portion, wherein a ring-shaped rib portion centering at the central axis and connected with the rib portions is further formed on the surface of the side opposite to the another side of the base portion where the vanes are provided. The ring-shaped rib portion extends axially from the base portion in a direction opposite the vanes.

Abstract: Provided are a traditional Chinese medicine for dispersing lung qi and detoxicating, a preparation method therefor, use thereof, and an analysis method. The traditional Chinese medicine contains a traditional Chinese medicine active extract. The active extract is composed of a first extract and, a second extract, herein the first extract is a water extract or an alcohol-water extract of ephedra, bitter apricot seed, raw gypsum, coix seed, rhizome of swordlike atractylodes, patchouli, Polygonum cuspidatum, verbena, reed rhizome, lepidium seed, pummelo peel, and artemisia annua, the second extract is a water extract or an alcohol-water extract of licorice, and the first extract and the second extract are separately obtained. This traditional Chinese medicine may be used for treating coronavirus diseases, such as novel coronavirus pneumonia.

Abstract: An impeller, rotating about a central axis includes a cup portion having a bottom portion and a cylindrical portion, a base portion, a plurality of vanes. The impeller further includes a plurality of rib portions, formed on a surface of a side opposite to another side of the base portion where the vanes are provided, wherein each of the rib portions is disposed axially opposite to at least a portion of a corresponding one of the vanes, and the rib portion and the vane are separated by the base portion; wherein a ring-shaped rib portion centering at the central axis and connected with the rib portions is further formed on the surface of the side opposite to the another side of the base portion where the vanes are provided, and the ring-shaped rib portion extends axially from the base portion in a direction opposite the vanes.

Abstract: An impeller and a centrifugal fan having the impeller are provided. The impeller rotates about a central axis, and includes: a cup portion, provided with a bottom portion and a cylindrical portion; a base portion, extending from a radially outermost end of the cup portion toward a radially outer side; a plurality of vanes, located on the radially outer side of the cup portion; and a ring portion, connected with end portions of the vanes on the radially outer side. The impeller further includes a plurality of rib portions, formed on a surface of a side opposite to another side of the base portion where the vanes are provided. Each of the rib portions is disposed axially opposite to at least a portion of a corresponding one of the vanes, and the rib portion and the vane is separated by the base portion.

Abstract: An impeller and a centrifugal fan having the impeller are provided. The impeller rotates about a central axis, and includes: a cup portion, provided with a bottom portion and a cylindrical portion; a base portion, extending from a radially outermost end of the cup portion toward a radially outer side; a plurality of vanes, located on the radially outer side of the cup portion; and a ring portion, connected with end portions of the vanes on the radially outer side. The impeller further includes a plurality of rib portions, formed on a surface of a side opposite to another side of the base portion where the vanes are provided. Each of the rib portions is disposed axially opposite to at least a portion of a corresponding one of the vanes, and the rib portion and the vane is separated by the base portion.

Abstract: A fan includes: an impeller, rotating around a rotation axis; a motor, disposed on an axial side of the impeller; and a supporting component, disposed on an axial side of the motor. The supporting component includes: a base, disposed on the axial side of the motor; first connection portions, extending from a partial area of a side wall of the base to a radial outer side; and mounting portions, disposed on an end portion on the radial outer side of the first connection portion and closer to the radial outer side than the impeller. The mounting portion has first and second claw portions arranged along a circumferential direction. An opening portion for inserting a vibration-proof component is between end portions of the first and second claw portions. A first gap on the radial outer side of the opening portion is greater than a second gap on a radial inner side.