TWI775492B - Fans and Fan Wheels - Google Patents

Abstract

The present invention relates to a fan and a fan wheel of the fan. The fan wheel of the fan comprises: a hub and several blades. The hub has an upper surface. The plurality of blades are disposed on the upper surface of the hub, each blade includes an air inlet side end, a turning section and an air outlet side end, and the turning section is disposed on the air inlet side end and the air outlet side Between the side ends, the thickness of the blade increases gradually from the wind inlet side end to the turning section, and the thickness of the blade decreases from the turning section to the wind outlet side end. The fan and the fan wheel of the present invention are designed with the thickness of the blade, so that the fan can rotate smoothly and the load of the blade is reduced, so as to reduce the power consumption.

Description

Fans and Fan Wheels

The present invention relates to a fan and a fan wheel of the fan.

The blades of the current conventional fan are designed to be of equal thickness. The conventional blade structure may cause a large load on the blades during rotation, resulting in high power consumption of the conventional fan. Therefore, it is necessary to improve.

The present invention provides a fan wheel of a fan. In one embodiment, the fan wheel of the fan includes: a hub and a plurality of blades. The hub has an upper surface. The plurality of blades are disposed on the upper surface of the hub, each blade includes an air inlet side end, a turning section and an air outlet side end, and the turning section is disposed on the air inlet side end and the air outlet side Between the side ends, the thickness of the blade increases gradually from the wind inlet side end to the turning section, and the thickness of the blade decreases from the turning section to the wind outlet side end.

The present invention provides a fan. In one embodiment, the fan includes: a fan frame, a fan wheel and a stator. The fan frame includes an air inlet, an air outlet and an accommodating space. The fan wheel is arranged in the accommodating space of the fan frame, and the fan wheel includes a hub and several blades. The hub has an upper surface. The plurality of blades are disposed on the upper surface of the hub, each blade includes an air inlet side end, a turning section and an air outlet side end, and the turning section is disposed on the air inlet side end and the air outlet side Between the side ends, the thickness of the blade increases gradually from the wind inlet side end to the turning section, and the thickness of the blade decreases from the turning section to the wind outlet side end. The stator is arranged in the hub of the fan wheel to drive the fan wheel to rotate.

The fan and the fan wheel of the present invention are designed with the thickness of the blade, so that the fan can rotate smoothly and the load of the blade is reduced, so as to reduce the power consumption.

FIG. 1 shows an exploded perspective view of a fan according to an embodiment of the present invention. FIG. 2 shows a schematic diagram of a fan according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 , in one embodiment, the fan 10 of the present invention includes a fan frame 20 , a fan wheel 30 and a stator 40 . The fan frame 20 includes an air inlet 21 , an air outlet 22 and an accommodating space 23 . The fan wheel 30 is disposed in the accommodating space 23 of the fan frame 20 . The fan 10 of the present invention can be a blower fan, but is not limited to the above.

In one embodiment, the air inlet 21 is disposed on a top surface 24 of the fan frame 20 , and the air outlet 22 is disposed on a side surface 25 of the fan frame 20 . The fan frame 20 includes a first frame body 26 and a second frame body 27 , the first frame body 26 has the top surface 24 and the side surface 25 , and the air inlet 21 and the air outlet 22 are provided with the first frame The body 26 , the first frame body 26 and the second frame body 27 are combined into the fan frame 20 , and the accommodating space 23 is formed in the combined first frame body 26 and the second frame body 27 .

FIG. 3 shows a schematic diagram of a fan wheel of a fan according to an embodiment of the present invention. FIG. 4 shows a top view of a fan wheel of a fan according to an embodiment of the present invention. Referring to FIGS. 1 to 4 , in one embodiment, the fan wheel 30 includes a hub 31 and a plurality of blades 32 . The hub 31 has an upper surface 311 . The plurality of blades 32 are disposed on the upper surface 311 of the hub 31 , each blade 32 includes an air inlet side end 321 , a turning section 322 and an air outlet side end 323 , and the turning section 322 is disposed on the air inlet side end 321 . Between the wind inlet side end 321 and the wind outlet side end 323, the thickness T of the blade 32 increases gradually from the wind inlet side end 321 to the turning section 322, that is, in the turning section 322, the blade 32 The thickness T is the largest. And the thickness T of the blade 32 is tapered from the turning section 322 to the outlet side end 323 , that is, the thickness T of the blade 32 is reduced to the minimum at the outlet side end 323 .

In one embodiment, a line connecting the wind inlet side end 321 to the wind outlet side end 323 of the blade 32 is a chord line 324 , and the chord line 324 overlaps with a center line 324C of the blade 32 . The blade 32 further has a first side edge 325 and a second side edge 326, which are respectively disposed on both sides of the chord line 324 and are symmetrically disposed. That is, the thickness of the blade 32 gradually increases symmetrically from the inlet side end 321 to the first side 325 and the second side 326 to the turning section 322, and the thickness of the blade 32 starts from the turning section 322. The sections 322 taper toward the air outlet side end 323 toward the first side edge 325 and the second side edge 326 , respectively. Therefore, the shape of the blade 32 in plan view takes the chord line 324 as the center line, and the shapes of the first side 325 and the second side 326 are symmetrical.

In one embodiment, the blade 32 further has a plurality of vertical lines 327 perpendicular to the chord line 324. Taking the vertical line 327 as an example, the vertical line 327 and the first side edge 325 intersect at a first intersection 328, and It intersects with the second side 326 at a second intersection 329 , at the vertical line 327 , the first vertical distance S1 from the first intersection 328 to the chord 324 and the first vertical distance S1 from the second intersection 329 to the chord 324 . The two vertical distances S2 are the same. In other words, the line connecting the middle points of the vertical lines 327 overlaps the chord line 324 . Therefore, similarly, the top view shape of the blade 32 takes the chord line 324 as the center line 324C, and the shapes of the first side 325 and the second side 326 are symmetrical.

In one embodiment, the stator 40 is disposed in the hub 31 of the fan wheel 30 to drive the fan wheel 30 to rotate. The stator 40 may include stator coils, circuit boards, and the like.

The fan and the fan wheel of the present invention are designed with the thickness of the blade, so that the fan can rotate smoothly and the load of the blade is reduced, so as to reduce the power consumption.

In one embodiment, the length of the string 324 is a first length L1, and the distance D1 from the wind inlet side end 321 to the turning section 322 is less than or equal to 0.4 of the first length L1. In one embodiment, the ratio of the thickness T of the turning section 322 to the first length L1 is between 0.1 and 0.3. The thickness T of the turning section 322 is the maximum thickness of the blade 32 . With the above-mentioned design, the fan can further reduce the power consumption.

In one embodiment, the fan wheel 30 further includes a shaft connecting portion 33 disposed in the center of the hub 31 , the plurality of blades 32 are disposed on the outer periphery of the shaft connecting portion 33 and disposed on the upper surface of the hub 31 . 311 , the plurality of blades 32 do not extend beyond the upper surface 311 of the hub 31 . A radial length from a peripheral side surface 331 of the shaft connecting portion 33 to an outer side surface 312 of the hub 31 is a second length L2, and the first length L1 is between 0.4 and 0.8 of the second length L2. In one embodiment, the radial distance D2 from the wind inlet side end 321 of the blade 32 to the peripheral side surface 331 of the shaft connecting portion is between 0.2 and 0.5 of the second length L2. The radial distance D2 from the wind inlet side end 321 of the blade 32 to the peripheral side surface 331 of the shaft connecting portion is related to the air intake volume. The distance D2 cannot be too large to make the length of the blade 32 too short, therefore, the radial distance D2 is preferably between 0.2 and 0.5 of the second length L2.

In one embodiment, the air outlet side end 323 of the blade is flush with the outer side surface 312 of the hub 31 . In one embodiment, the air outlet side end 323 is in an arc shape. In one embodiment, the shaft connecting portion 33 has a center point 332 , and a radial line 333 is defined between the center point 332 and the air outlet side end 323 of the blade 32 . The chord line 324 of the blade 32 extends to the center point 332 , which is the same line as the radial line 333 . In this embodiment, the rotation direction of the fan wheel 30 can be clockwise or counterclockwise.

FIG. 5 shows a top view of a fan wheel of a fan according to another embodiment of the present invention. Referring to FIG. 5 , in one embodiment, the radial distance D3 from the air outlet side end 323 of the blade 32 to the outer side surface 312 of the hub 31 is less than or equal to 0.1 of the second length L2 . In one embodiment, the air outlet side end 323 is a pointed shape.

FIG. 6 shows a top view of a fan wheel of a fan according to another embodiment of the present invention. In one embodiment, the blade 52 includes an air inlet side end 521 , a turning section 522 and an air outlet side end 523 . There is a radial line 533 from the center point 532 of the shaft connecting portion 53 to the air outlet side end 523 of the blade 52 . The chord line 524 and the radial line 533 of the blade 52 have a first angle θ1, and the first angle θ1 from the radial line 533 to the chord line 524 is a counterclockwise direction F1, that is, relative to the Radial line 533, the vanes 52 are set at an inclination of the first angle θ1. In this embodiment, the rotation direction of the fan wheel 50 in plan view is also the counterclockwise direction. Therefore, since the first angle θ1 at which the blade 52 is deflected and the rotation direction of the fan wheel 50 are both counterclockwise, the fan wheel 50 can be rotated smoothly to reduce power consumption.

FIG. 7 shows a top view of a fan wheel of a fan according to another embodiment of the present invention. In one embodiment, the blade 62 includes an air inlet side end 621 , a turning section 622 and an air outlet side end 623 . There is a radial line 633 from the center point 632 of the shaft connecting portion 63 to the air outlet side end 623 of the blade 62 . The chord line 624 and the radial line 633 of the blade 62 have a second angle θ2, and the second angle θ2 is the clockwise direction F2 from the radial line 633 to the chord line 624, that is, relative to the Radial line 633, the vanes 62 are set at an inclination of the second angle θ2. In this embodiment, the rotation direction of the fan wheel 60 is also the clockwise direction F2. Therefore, since the second angle θ2 at which the blade 62 is deflected and the rotation direction of the fan wheel 60 are both clockwise, the fan wheel 60 can be rotated smoothly to reduce power consumption. In one embodiment, the turning section 622 further includes a radially extending region 622A, and the thickness of the radially extending region 622A is the same, that is, the thickness of the radially extending region 622A of the turning section 322 is T .

The above-mentioned embodiments are only to illustrate the principle and effect of the present invention, but not to limit the present invention. Modifications and changes made to the above embodiments by those skilled in the art still do not violate the spirit of the present invention. The scope of the rights of the present invention should be listed in the scope of the patent application described later.

10: Fan 20: fan frame 21: air inlet 22: Air outlet 23: accommodating space 24: Top surface 25: Side 26: The first frame 27: Second frame 30: Fan wheel 31: Wheels 32: Blades 33: Shaft joint 40: Stator 50: fan wheel 52: Blades 53: Shaft joint 60: fan wheel 62: Blades 63: Shaft joint 311: Upper surface 312: outer side 321: Inlet side end 322: Turning Section 323: Air outlet side 324: String 324C: Centerline 325: First side 326: Second side 327: Vertical Line 328: First Intersection 329: Second Node 331: Peripheral side 332: center point 333: Radial Line 521: Inlet side end 522: Turning section 523: Air outlet side 524: String 532: center point 533: Radial Line 621: Inlet side end 622: Turning Section 622A: Radial extension area 623: Air outlet side 624: String 632: center point 633: radial line D1: Distance D2: radial distance D3: Radial distance F1: counterclockwise F2: Clockwise direction L1: first length L2: second length S1: The first vertical distance S2: Second vertical distance T: Thickness θ1: first angle θ2: second angle

FIG. 1 shows an exploded perspective view of a fan according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a fan according to an embodiment of the present invention;

3 shows a schematic diagram of a fan wheel of a fan according to an embodiment of the present invention;

4 shows a top view of a fan wheel of a fan according to an embodiment of the present invention;

5 shows a top view of a fan wheel of a fan according to another embodiment of the present invention;

FIG. 6 shows a top view of a fan wheel of a fan according to another embodiment of the present invention; and

FIG. 7 shows a top view of a fan wheel of a fan according to another embodiment of the present invention.

30: Fan wheel

31: Wheels

32: Blades

33: Shaft joint

311: Upper surface

312: outer side

321: Inlet side end

322: Turning Section

323: Air outlet side

324: String

324C: Centerline

325: First side

326: Second side

T: Thickness

Claims (32)

A fan wheel of a fan, comprising: a hub with an upper surface; a plurality of blades arranged on the upper surface of the hub, each blade including an air inlet side end, a turning section and an air outlet side end , the turning section is arranged between the wind inlet side end and the wind outlet side end, the thickness of the blade increases from the wind inlet side end to the turning section, and the thickness of the blade is from the turning section to the turning section The air outlet side end is tapered; and a shaft connection portion is arranged in the center of the hub, and the plurality of blades are arranged on the outer periphery of the shaft connection portion; wherein the air inlet side end of the blade is connected to the air outlet side end The line is a chord line, the length of the chord line is a first length, the radial length from a peripheral side surface of the shaft connection portion to an outer side surface of the hub is a second length, and the first length is the second length The length is between 0.4 and 0.8. The fan wheel of the fan according to claim 1, wherein the blade has a first side edge and a second side edge, which are respectively arranged on both sides of the chord line and are arranged symmetrically. The fan wheel of the fan according to claim 1, wherein the distance from the wind inlet side end to the turning section is less than or equal to 0.4 of the first length. The fan wheel of the fan of claim 1, wherein the ratio of the thickness of the turning section to the first length is between 0.1 and 0.3. A fan wheel of a fan, comprising: a hub with an upper surface; a plurality of blades arranged on the upper surface of the hub, each blade including an air inlet side end, a turning section and an air outlet side end , the turning section is arranged between the wind inlet side end and the wind outlet side end, the thickness of the blade increases from the wind inlet side end to the turning section, and the thickness of the blade is from the turning section to the turning section The air outlet side end is tapered; and a shaft connecting portion is arranged in the center of the hub, and the plurality of blades are arranged on the outer periphery of the shaft connecting portion; wherein a peripheral side surface of the shaft connecting portion is connected to an outer side surface of the hub. The radial length is a second length, and the radial distance from the wind inlet side end of the blade to the peripheral side surface of the shaft connecting portion is between 0.2 and 0.5 of the second length. A fan wheel of a fan, comprising: a hub with an upper surface; a plurality of blades arranged on the upper surface of the hub, each blade including an air inlet side end, a turning section and an air outlet side end , the turning section is arranged between the wind inlet side end and the wind outlet side end, the thickness of the blade increases from the wind inlet side end to the turning section, and the thickness of the blade is from the turning section to the turning section The air outlet side end is tapered; and a shaft connecting portion is arranged in the center of the hub, and the plurality of blades are arranged on the outer periphery of the shaft connecting portion; wherein a peripheral side surface of the shaft connecting portion is connected to an outer side surface of the hub. The radial length is a second length, and the radial distance from the air outlet side end of the blade to the outer side surface of the hub is less than or equal to at 0.1 of the second length. The fan wheel of the fan of claim 6, wherein the air outlet side end of the blade is flush with the outer side surface of the wheel hub. A fan wheel of a fan, comprising: a hub with an upper surface; a plurality of blades arranged on the upper surface of the hub, each blade including an air inlet side end, a turning section and an air outlet side end , the turning section is arranged between the wind inlet side end and the wind outlet side end, the thickness of the blade increases from the wind inlet side end to the turning section, and the thickness of the blade is from the turning section to the turning section The air outlet side end is tapered; and a shaft connecting portion is arranged in the center of the hub, and the plurality of blades are arranged on the outer periphery of the shaft connecting portion; wherein the shaft connecting portion has a center point, and the center point is connected to the blade. The air outlet side end has a radial line, and the line connecting the air inlet side end to the air outlet side end of the blade is a chord line. The fan wheel of the fan of claim 8, wherein the chord line of the blade extends to the center point and is the same line as the radial line. The fan wheel of the fan of claim 8, wherein the chord line of the blade has a first angle with the radial line, and the first angle is a counterclockwise direction from the radial line to the chord line. The fan wheel of claim 8, wherein the chord line and the radial line of the blade have a first Two angles, the second angle is clockwise from the radial line to the chord line. A fan wheel of a fan, comprising: a hub with an upper surface; and a plurality of blades arranged on the upper surface of the hub, each blade includes an air inlet side end, a turning section and an air outlet side The turning section is arranged between the wind inlet side end and the wind outlet side end, the thickness of the blade increases gradually from the wind inlet side end to the turning section, and the thickness of the blade starts from the turning section It tapers to the air outlet side end; wherein the turning section further includes a radially extending area, and the thickness of the radially extending area is the same. For the fan wheel of the fan of claim 1, 5, 6, 8, and 12, the air outlet side end is an arc. For the fan wheel of the fan of claim 1, 5, 6, 8, and 12, the end on the air outlet side is a pointed shape. The fan wheel of the fan of claim 1, 5, 6, 8, and 12, wherein the line connecting the wind inlet side end to the wind outlet side end of the blade is a chord line, and the blade has a first side edge and a second side, respectively disposed on both sides of the chord, several vertical lines are perpendicular to the chord, each vertical line intersects with the first side at a first intersection, and is connected with the second side The sides intersect at a second intersection, and at the vertical line, the first vertical distance from the first intersection to the chord is the same as the second vertical distance from the second intersection to the chord. A fan, comprising: a fan frame, including an air inlet, an air outlet and a accommodating space; the fan wheel as claimed in item 1, arranged in the accommodating space of the fan frame; and a stator, arranged in the fan The hub of the wheel is used to drive the fan wheel to rotate. The fan of claim 16, wherein the air inlet is disposed on a top surface of the fan frame, and the air outlet is disposed on a side surface of the fan frame. The fan of claim 16, wherein the fan frame further comprises a first frame body and a second frame body, and the first frame body and the second frame body are combined into the fan frame. The fan of claim 16, wherein the blade has a first side edge and a second side edge, which are respectively arranged on both sides of the chord line and are arranged symmetrically. The fan of claim 16, wherein the distance from the wind inlet side end to the turning section is less than or equal to 0.4 of the first length. The fan of claim 16, wherein the ratio of the thickness of the turning section to the first length is between 0.1 and 0.3. A fan, comprising: a fan frame, including an air inlet, an air outlet and a accommodating space; As claimed in claim 5, the fan wheel is arranged in the accommodating space of the fan frame; and a stator is arranged in the hub of the fan wheel to drive the fan wheel to rotate. A fan, comprising: a fan frame, including an air inlet, an air outlet and a accommodating space; a fan wheel as claimed in item 6, arranged in the accommodating space of the fan frame; and a stator, arranged in the fan The hub of the wheel is used to drive the fan wheel to rotate. The fan of claim 23, wherein the air outlet side end of the blade is flush with the outer side surface of the hub. A fan, comprising: a fan frame, including an air inlet, an air outlet and a accommodating space; a fan wheel as claimed in item 8, arranged in the accommodating space of the fan frame; and a stator, arranged in the fan The hub of the wheel is used to drive the fan wheel to rotate. The fan of claim 25, wherein the chord line of the blade extending to the center point is the same line as the radial line. The fan of claim 25, wherein the chord line of the blade and the radial line have a first angle, the first angle from the radial line to the chord line is a counterclockwise direction, and the rotation direction of the fan wheel in the counterclockwise direction. The fan of claim 25, wherein the chord line of the blade and the radial line have a second angle, the second angle from the radial line to the chord line is a clockwise direction, and the rotation direction of the fan wheel for the clockwise direction. A fan, comprising: a fan frame, including an air inlet, an air outlet and a accommodating space; a fan wheel as claimed in item 12, arranged in the accommodating space of the fan frame; and a stator, arranged in the fan The hub of the wheel is used to drive the fan wheel to rotate. The fan of claim 16, 22, 23, 25, and 29, wherein the end of the air outlet side is an arc. The fan of claim 16, 22, 23, 25, and 29, wherein the air outlet side end is a pointed shape. The fan of claim 16, 22, 23, 25, 29, wherein the line connecting the wind inlet side end to the wind outlet side end of the blade is a chord line, and the blade has a first side and a first side Two side edges are respectively arranged on both sides of the chord line, several vertical lines are perpendicular to the chord line, each vertical line intersects with the first side edge at a first intersection point, and intersects with the second side edge at A second intersection, on the vertical line, the first vertical distance from the first intersection to the chord is the same as the second vertical distance from the second intersection to the chord.

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