TW201617016A - Turbine - Google Patents

Abstract

The present invention discloses a turbine; the turbine comprises a top cover, a bottom cover and fans between the top cover and the bottom cover. The fans extend to the central axis and do not overlap with each other in the axial direction. By the above structure, the air absorbed by the air inlet can swiftly flow along the fans and then be exhausted from the air outlet. Compared with the centrifugal fan, the structure according to the present invention can effectively increase the air draft efficiency of the turbine. Compared with the standard turbine, the structure according to the present invention is simpler and easier to process, which can significantly decrease the cost.

Description

turbine

The present invention relates to the field of fans, and more particularly to a turbine.

The vacuum cleaner is a cleaning appliance that drives an air suction fan by an electric motor to generate a negative pressure for dust removal. The vacuum cleaner does not cause dust to fly during operation, and can absorb dust and dust that is generally difficult to remove on the carpet. It is convenient and hygienic and is widely used in homes and public places.

Vacuum cleaner suction fans are commonly used in centrifugal impeller structures and turbine structures. The centrifugal impeller structure uses a centrifugal fan as the suction fan of the vacuum cleaner. The centrifugal fan has a simple structure and is easy to manufacture, and since the vacuum cleaner product uses plastic as the main material, and the centrifugal fan structure is suitable for molding by a plastic mold, the centrifugal fan is widely favored. However, the suction efficiency of the centrifugal fan is not ideal, especially when it is carried out on a battery-operated portable device. When the suction fan is more efficient, the energy required for operation is more. As for the conventional turbine structure, although the suction efficiency is higher than that of the centrifugal fan, the shape is complicated and the processing is difficult, resulting in high product cost.

Based on this, it is necessary to provide a turbine having high suction efficiency, simple structure, and easy processing for the above problems.

The invention provides a turbine, comprising a central shaft, an upper cover, a lower cover and a blade sandwiched between the upper cover and the lower cover, wherein the upper cover is provided with an air inlet, and the upper cover and the outer edge of the lower cover form an air outlet. The vanes extend to the central axis, and the projections of the vanes in the axial direction do not overlap.

In one embodiment, the portion of the blade corresponding to the air inlet has an extended curved surface extending in the direction of rotation.

In one embodiment, the extended curved bread is sandwiched within the air inlet.

In one embodiment, the turbine further includes a secondary blade having a windward area that is smaller than the blade, the secondary blade being spaced from the blade.

In one embodiment, the secondary blade has one end that is close to and does not contact the central axis, and the other end is flush with the outer edge of the lower cover, and the secondary blade divides the arc length between the adjacent two blades. For arc lengths in the counterclockwise direction, the arc length is between 1:2 and 1:1.

In one embodiment, an end of the sub-blade that is not in contact with the central axis is located in an axial projection plane of the air inlet.

In one embodiment, the number of blades is three or four or five, and the number of the sub-blades is the same as the number of blades.

In one embodiment, the blade extends to one end at one end and the other end is flush with the outer edge of the lower cover, the blade, the upper cover, the lower cover and the central shaft dividing the chamber in the turbine into A small chamber of the same number as the number of blades.

In one embodiment, the central portion of the lower cover is provided with a protrusion, and the protrusion is formed at a bottom surface to a bottom surface of the lower cover to form a concave curved surface, and the concave curved surface is tangent to the bottom surface of the lower surface.

In one embodiment, the turbine is mold releaseable.

The turbine includes an upper cover, a lower cover, and blades sandwiched between the upper cover and the lower cover, the blades extending to the central axis, and the projections of the blades in the axial direction do not overlap. In this way, when the outside air is sucked in from the air inlet, it can quickly flow along the blade and finally exit from the surrounding air outlet. Such a structure effectively improves the suction efficiency of the turbine compared with the centrifugal fan, and compared with the standard turbine. The structure is simpler and easier to process, which can reduce costs.

100‧‧‧ turbine

110‧‧‧Upper cover

111‧‧‧Air inlet

120‧‧‧Under the cover

121‧‧‧Protrusion

122‧‧‧ concave surface

130‧‧‧ blades

131‧‧‧Sub blades

133‧‧‧Extended surface

134‧‧‧ convex surface

140‧‧‧ center axis

150‧‧‧air outlet

1 is a schematic structural view of an embodiment of the present invention; FIG. 2 is a schematic structural view of a lower cover and a blade of the embodiment of FIG. 1; FIG. 3 is a structural view of a radial cross-sectional view of the embodiment of FIG. Overlooking the structure.

The above described objects, features and advantages of the present invention will become more apparent from the aspects of the appended claims. Numerous specific details are set forth in the description below in order to provide a thorough understanding of the invention. But the invention can The invention may be practiced in other ways than those described herein. Those skilled in the art can make various modifications without departing from the scope of the invention, and thus the invention is not limited by the specific embodiments disclosed below.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Referring to Figures 1 and 2, the present invention provides a turbine 100. The turbine 100 includes an upper cover 110, a lower cover 120, a blade 130 sandwiched between the upper cover 110 and the lower cover 120, and a central shaft 140, that is, an axis of intersection of the blades 130 at the axial center of the turbine 100. An air inlet 111 is defined in the upper cover 110, and the upper cover 110 and the lower cover 120 are overlapped by the blade 130, so that the outer cover 110 and the outer edge of the lower cover 120 form an air outlet 150, and the blade 130 extends to the central shaft 140, and the blade The portion corresponding to the air inlet 111 extends in the direction of rotation with an extended curved surface 133 so that the outside air can flow along the extended curved surface 133 when it enters the turbine 100, and then is discharged from the surrounding air outlet 150, thereby increasing the air. The efficiency of the flow can increase the suction efficiency of the turbine 100. During operation, the motor cooperates with the turbine 100, the turbine 100 rotates under the driving of the motor, and the outside air is drawn into the turbine 100 from the air inlet 111 by the rotation of the blade 130, and is exhausted from the turbine 100 through the air outlet 150, as compared with With the centrifugal fan, the suction efficiency of the present invention is higher, and the structure of the present invention is simpler and easier to process than the conventional turbine structure, thereby reducing the processing cost.

Referring to Figures 2 and 3, the central shaft 140 cooperates with the motor such that the central shaft 140 can drive the entire turbine 100 to rotate. The blades 130 are curved and arranged on the lower cover 120 in the circumferential direction. One end of the blade 130 is fixed to the central shaft 140, and the other end is flush with the outer edge of the lower cover 120, whereby the blade 130 is fitted with the upper cover 110 and the lower cover 120 form a plurality of connected air outlets 150. The blade 130, the upper cover 110, the lower cover 120, and the central shaft 140 divide the chamber within the entire turbine 100 into a plurality of small chambers, and the number of the plurality of small chambers is equal to the number of the blades. This means that the blade 130 is fixedly connected to the upper cover 110, the lower cover 120 or the central shaft 140. The portion of the blade 130 corresponding to the air inlet 111 extends in the direction of rotation of the turbine 100 with an extended curved surface 133, and the projections of the blade 130 in the axial direction do not overlap. Whether it is a single blade 130 or a plurality of blades 130, the projections in the axial direction do not overlap. The extended extended curved surface 133 is sandwiched in the air inlet 111, but the extended curved surface 133 does not necessarily need to be flush with the outer edge of the air inlet 111. This ensures that when the outside air is drawn into the turbine 100, it can flow along the extended curved surface 133, and since the projections of the blades 130 in the axial direction do not overlap, that is, when the outside air enters the turbine 100, it flows. The resistance becomes small, thereby increasing the flow speed of the outside air within the turbine 100, thus improving the suction efficiency of the turbine 100. In the present embodiment, a total of four blades 130 are provided. In other modes, there may be three, five or other numbers, and no specific requirements are made here.

Referring to FIG. 2, FIG. 3 and FIG. 4, preferably, the turbine 100 may further include a sub-blade 131 having a windward area smaller than the blade 130. The sub-blade 131 is spaced apart from the blade 130, and one end of the sub-blade 131 and the lower cover 120 are disposed. The outer edge is flush and the other end is located in the radial projection plane of the air inlet 111. A sub-blade 131 is disposed between each adjacent two vanes 130, and the air outlet 150 formed by the vane 130 and the upper cover 110 and the lower cover 120 is divided into two air outlets 150. The structure of the sub-blades 131 is the same as the structure before the blade 130 extends beyond the extended curved surface 133, and the length of the sub-blades 131 is shorter than that of the blade 130. When viewed from the outside of the upper cover 110 toward the inside of the turbine 100, one end of the sub-blade 131 close to the central axis 140 (not in contact with the central shaft 140) can be seen through the air inlet 111, that is, the sub-blade 131 is close to the central axis. One end of the 140 is placed in the radial projection plane of the air inlet 111 and is not in contact with the central shaft 140. The external air flows along the extended curved surface 133 and is split, and flows into the flow path formed by the two adjacent blades 130 and the sub-blades 131 therebetween, and then discharged from the surrounding air outlet 150. The design of the turbine 100 is designed. The flow efficiency and discharge efficiency of the outside air inside the turbine 100 can be increased. The number of the sub blades 131 is set according to the blades 130 Depending on the number, since the blades 130 are spaced apart from the sub-blades 131, the number of the sub-blades 131 is equal to the number of the blades 130. Therefore, in the present embodiment, four sub-blades 131 are provided similarly to the blade 130, and in other embodiments, three or five may be provided in the same manner as the blade 130.

Both the blade 130 and the sub-blade 131 have one end flush with the outer edge of the lower cover 120, and since the blade 130 is spaced apart from the sub-blade 131, the sub-blade 131 will inevitably have an arc length between the adjacent two blades 130. It is divided into two sections. In the present embodiment, the ratio of the arc lengths of the two segments is 4:5 in the counterclockwise direction. In other embodiments, the ratio of the arc lengths of the two segments in the counterclockwise direction may be between 1:2 and 1: Any ratio between 1 , that is, the position where the sub-blades 131 are disposed between the two blades 130 is not specifically required, as long as the sub-blades 131 can divide the arc length between the blades 130 corresponding to the two sides thereof. The counterclockwise ratio can be two arc lengths between 1:2 and 1:1.

An extended curved surface 133 extending from the blade 130 is enclosed in the air inlet 111, that is, the rotating curved surface 133 extending from the blade 130 falls within the projection surface of the air inlet 111, and the extended curved surface 133 does not necessarily need to be external to the air inlet 111. Flush, and because the portion of the blade 130 extends from the extended curved surface 133 to be higher than the remaining partial blade 130 and the secondary blade 131, the upper cover 110 needs to cooperate with the blade 130 to extend the air inlet 111, so as to ensure the extension. The extended curved surface 133 is sandwiched in the air inlet 111.

The central portion of the lower cover 120 is provided with a protrusion 121. The protrusion 121 is connected to the central axis 140, and the highest point of the protrusion 121 to the bottom surface of the lower cover 120 forms a concave curved surface 122. The curvature of the concave curved surface 122 is not particularly required. It is sufficient that the concave curved surface 122 is tangent to the lower surface of the lower surface. In order to make the blade 130 fit more closely with the concave curved surface 122, it is necessary to set the surface of the blade 130 placed on the lower cover 120 in contact with the lower cover 120 to a convex curved surface matching the concave curved surface 122. 134.

The blade 130 is fixed on the lower cover 120, and the upper cover 110 and the blade 130 are also fixedly connected, and the structure of the blade 130 is simple. When the turbine 100 is produced and processed, a processing method of demolding, such as injection molding, can be used. Alternatively, the turbine 100 can be machined using a demolding process.

When the turbine 100 is used in conjunction with a motor, the motor is started and the motor drives the turbine 100 to rotate. The blade 130 forces the gas in the turbine 100 to rotate, and after the gas flows along the extended curved surface 133, it is branched and flown from the flow path formed between the blade 130 and the auxiliary blade 131, and is discharged from the surrounding air outlet 150 by the centrifugal force. When the gas in the turbine 100 is exhausted, the pressure in the turbine 100 is lower than the pressure outside the air inlet 111, and under the pressure difference, the outside air is sucked into the turbine 100 from the air inlet 111, so that it reciprocates to reach its Corresponding technical effects.

The turbine 100 includes an upper cover 110, a lower cover 120, and a blade 130 sandwiched between the upper cover 110 and the lower cover 120. The blade 130 is a curved blade and is disposed between the upper cover 110 and the lower cover 120 in a circumferential direction. The blade 131 A portion corresponding to the air inlet 111 has an extended curved surface 133 extending in the rotational direction. Thereby, when the outside air is sucked from the air inlet 111, it can quickly flow through the extending curved surface 133 and the flow path formed between the blade 130 and the sub-blade 131, and finally discharged from the surrounding air outlet 150, compared to the centrifugal fan. The structure of the present invention effectively improves the suction efficiency of the turbine 100, and the structure of the present invention is simpler and easier to process than conventional turbines, thereby reducing costs.

The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

100‧‧‧ turbine

110‧‧‧Upper cover

111‧‧‧Air inlet

120‧‧‧Under the cover

130‧‧‧ blades

133‧‧‧Extended surface

140‧‧‧ center axis

150‧‧‧air outlet

Claims (10)

A turbine includes a central shaft, an upper cover, a lower cover, and a blade sandwiched between the upper cover and the lower cover, the upper cover is provided with an air inlet, and the upper cover and the outer edge of the lower cover form an air outlet The blade extends to the central axis, the projections of the blades in the axial direction do not overlap. The turbine of claim 1, wherein the portion of the blade corresponding to the air inlet extends in an extending direction in an extending direction. The turbine of claim 2, wherein the extended bread is sandwiched in the air inlet. The turbine of claim 1, wherein the turbine further comprises a secondary blade having a windward area smaller than the blade, the secondary blade being spaced from the blade. The turbine of claim 4, wherein one end of the sub-blade is adjacent to and does not contact the central shaft, and the other end of the vane is flush with the outer edge of the lower cover, and the sub-blade will be adjacent to the two of the blades. The arc length between the two is divided into arc lengths in the counterclockwise direction at a ratio of arc lengths between 1:2 and 1:1. The turbine of claim 5, wherein an end of the sub-blade that is not in contact with the central shaft is located in an axial projection plane of the air inlet. The turbine of claim 4, wherein the blade is three or four or five, and the number of the sub-blades is the same as the number of blades. The turbine of claim 1, wherein the blade extends to the central shaft at one end, and the other end of the blade is flush with the outer edge of the lower cover, the blade, the upper cover, the lower cover and the central shaft The chamber within the turbine is divided into small chambers equal in number to the number of blades. The turbine of claim 1, wherein a central portion of the lower cover is provided with a protrusion, and a height of the protrusion to a bottom surface of the lower cover forms a concave curved surface, the concave curved surface and the lower cover of the lower cover The bottom surface is tangent. The turbine of claim 1, wherein the turbine is demolded.