CN105386986A - fan - Google Patents

Abstract

The invention discloses a fan. The fan comprises a power fan, a bearing seat and a driven part. The driven member is rotated by the wind power of the power fan and comprises a hub part, a plurality of blades, an annular flow guide structure and a load element. The hub is arranged on the bearing seat. The blades are enclosed in the hub. The annular flow guide structure is arranged at the tail end of the blade in a surrounding mode. The load element is connected with the annular flow guide structure.

Description

fan

This application is a divisional application of an invention patent application with an application date of March 10, 2010, an application number of 201010142524.6, and an invention title of "fan".

technical field

The invention relates to a wind energy conversion device, in particular to a wind-driven fan for dynamic pressurization diversion and wind energy recovery.

Background technique

Fans are used in a wide range of applications. For example, fans are required for air supply and heat dissipation devices, hair dryers, room exhaust devices, and wind tunnel laboratory fans, and their structures also have similarities and differences.

For example, FIG. 1 is a schematic structural diagram of a traditional fan device. A fan 500 for heat dissipation in a traditional server room includes a rotor 520 and a stator 530 . The rotor 520 is pivotally mounted on a base 501 and includes a hub 521 and a plurality of blades 522 . The rotor 520 is connected to the stator 530 . When the stator 530 drives the rotor 520 to pivot relative to an axis C, each blade 522 rotates to generate a wind force Q1 , thereby controlling the temperature of the server room.

However, when the demand for air volume increases, the fan device 500 needs to use blades 522 with a larger radial length (for example, the diameter of the rotor is as long as 18 cm to 40 cm). Therefore, when the radial length of the blades 522 is larger, the rotor 520 The weight and the required torque have also increased significantly, so it needs to be equipped with a high-power and large-sized motor device to operate.

However, the weight of each component of the fan device 500 with high power and large size is greatly increased, so its working efficiency is very low, and it needs a large current to drive. Even because the size of the fan device 500 is large, so in order to maintain the same air volume, the size of the entire fan device 500 also needs to be greatly increased, and after greatly increasing the size of the fan device 500, the fan device 500 has more regions that cannot enter the wind, and then cause a waste of space. In addition, it even greatly increases the overall power consumption.

Contents of the invention

In view of the above problems, an object of the present invention is to provide a fan that can at least maintain the original air volume and rotational torque, and even provide more additional air volume without the need for a large-power and large-sized motor device.

Another object of the present invention is to provide a fan. By using a motor with a smaller power and size, it not only reduces the power consumption of the motor, improves the work efficiency of the motor, but also reduces the overall size and reduces the area where the wind cannot enter , thereby avoiding wastage of space.

The reason is that, in order to achieve the above purpose, the fan according to the present invention includes a power fan, a bearing seat and a follower. The power fan has a first impeller and a motor. The driven part is rotated by the wind force of the power fan, and includes a second impeller and at least one first load element. The first load element is connected to the second impeller. The first impeller includes a first hub and a plurality of first blades, and the first blades are arranged on the first hub. The second impeller faces the first impeller and includes a second hub, a plurality of second blades and at least one first annular guide structure. The second hub is pivotally arranged on the bearing base. The second blades are arranged on the second hub, and the first annular guide structure is arranged on the ends of the second blades. The inner wall of the first annular flow guide structure surrounds an accommodating space, and at least part of the first vanes extend into the accommodating space. The inner wall of the first annular flow guiding structure is inclined to a central axis of the power fan, and the inclination of the inner wall gradually increases toward the direction of the first impeller. Based on the above, the fan of the present invention uses the wind force of the power fan to drive the follower to rotate, which not only meets the requirements of low speed and high efficiency of the fan, but also does not require a large The powerful and large-sized motor can still at least maintain the original air volume and rotational torque, and even provide more additional air volume.

In addition, as long as the motor of the blower fan of the present invention can drive the second blade to rotate by the wind force of the power fan, the entire follower can be rotated accordingly. In this way, the fan of the present invention can be matched with a motor of smaller power and size, which not only saves the power consumption of the motor, improves the working efficiency of the motor, but also reduces the overall size, reduces the area where the wind cannot enter, and thus avoids space constraints. Waste, save production costs and increase the market competitiveness of products.

Description of drawings

In order to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible, the detailed description of the accompanying drawings is as follows:

Fig. 1 is a schematic structural diagram of a conventional fan device.

Fig. 2 is a schematic structural view of a fan according to a first embodiment of the present invention.

Fig. 3A is a schematic structural diagram of a fan according to a second embodiment of the present invention.

Fig. 3B is a top view of the follower shown in Fig. 3A.

Fig. 4 is a schematic structural diagram of a fan according to a third embodiment of the present invention.

Fig. 5 is a top view of a power fan according to a fourth embodiment of the present invention.

FIG. 6 is a top view of a follower of a fifth embodiment of the present invention.

Fig. 7 is a schematic structural view of a fan according to a sixth embodiment of the present invention.

FIG. 8 is a top view of a follower and a rotating element according to a seventh embodiment of the present invention.

FIG. 9 is a top view of a follower and another rotating element according to an eighth embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a fan according to the ninth embodiment of the present invention.

Explanation of main component symbols

100, 100a, 100b, 100c, 100d: wind 341: third blade

Machine 342: Third Annular Diversion Structure

200, 201: power fan 343: plate body

210: the first impeller 344a: the first electromagnetic group

220: first hub 344b: second electromagnetic group

230: first blade 345', 345: gear set

240: second annular diversion structure 346: belt

250: motor 350: second load element

300, 300a, 300b, 300c, 300d, 300e, 400: bearing seat

300f, 300g: follower 401: flange

305: Second impeller C: Central axis

310: second hub parts W1, W2: rotating units

320: second blade Q2, Q3: wind power

330: the first annular diversion structure

331: inner wall

332: Accommodating space

340: first load element

detailed description

The spirit of the present invention will be clearly described in detail in conjunction with the accompanying drawings. Those skilled in the art can change and modify the technology taught by the present invention after understanding the embodiments of the present invention without departing from the spirit and spirit of the present invention. scope.

Fig. 2 is a schematic structural view of a fan according to a first embodiment of the present invention. The present invention discloses a fan 100 , which at least includes a power fan 200 , a bearing seat 400 and a follower 300 . The power fan 200 is arranged corresponding to the follower 300 , and can output wind force to rotate the follower 300 . The power fan 200 includes a motor 250 and a first impeller 210 . The first impeller 210 includes a first hub 220 and a plurality of first blades 230 , and the first blades 230 are disposed around the periphery of the first hub 220 . The first impeller 210 can rotate relative to a central axis C after being driven by the motor 250 .

The follower 300 includes a second impeller 305 and at least one first load element 340 . The second impeller 305 faces the first impeller 210 , and includes a second hub 310 , a plurality of second blades 320 , and a first annular guide structure 330 . The second hub portion 310 is pivotally disposed on the bearing seat 400 and centered on the central axis C. The second vane 320 is disposed around the periphery of the second hub portion 310 . The first annular flow guiding structure 330 surrounds the second hub portion 310 and connects the ends of the second blades 320 . The first load element 340 is connected with the second impeller 305 , especially the first load element 340 is fixedly connected with the first annular flow guiding structure 330 so as to rotate together with the second blade 320 .

In this way, when the first impeller 210 is driven by the motor 250 to rotate, the second blades 320 are pushed by the wind force Q2 generated by the first impeller 210 , and then rotate relative to the central axis C. Therefore, the first load element 340 can rotate together with the second impeller 305 .

Please refer to Figure 2 again. In this embodiment, the inner wall 331 of the first annular flow guiding structure 330 can surround an accommodating space 332, and the accommodating space 332 not only accommodates the second hub 310 and the second blade 320 around the second hub 310, The whole of the first impeller 210 or at least a part of the first blades 230 can extend into the accommodating space 332 . In this way, when the first impeller 210 rotates, the inner wall 331 of the first annular flow guiding structure 330 guides the wind force Q2 generated by the first blades 230 to advance towards the second blades 320, and then drives the second impeller 305 rotation, so as to improve the rotation efficiency of the second blades 320 .

In addition, the inner wall 331 of the first annular flow guide structure 330 and the central axis C of the follower 300 may be parallel to each other (as shown in the figure) or not parallel to each other. The inner wall 331 of the first annular flow guide structure 330 can be inclined (not shown in the figure), for example, the inner wall 331 of the first annular flow guide structure 330 gradually increases its slope toward the direction of the first impeller 210 to expand its accommodation. The space 332 further provides the first impeller 210 with a larger size to protrude, thereby increasing the wind force Q2 used to push the second impeller 305 to rotate.

Please refer to FIG. 3A and FIG. 3B . Fig. 3A is a schematic structural diagram of a fan according to a second embodiment of the present invention. FIG. 3B is a top view of the follower 300a shown in FIG. 3A. One difference between the fan 100a of the second embodiment and the fan 100 of the first embodiment is that the first load element 340 in the first embodiment (as shown in FIG. 2 ) can be replaced by a plurality of third load elements in the second embodiment. The vanes 341 , and the third vanes 341 are equidistantly connected to the outer edge of the first annular flow guiding structure 330 . Thus, when the first impeller 210 rotates, the second impeller 305 drives the third blades 341 to rotate relative to the central axis C synchronously.

In this way, when the diameter of the follower 300a of the second embodiment (about 18 cm to 40 cm) is close to the diameter of the prior art fan 500 (as shown in FIG. 1 ), compared with the prior art, this second embodiment except the first In addition to the wind force Q2 provided by the impeller 210 , the second impeller 305 synchronously drives the third blades 341 to rotate to provide an additional wind force Q3 .

In addition, since the diameter of the first impeller 210 is smaller than the diameter of the follower 300a (for example, 18 cm to 40 cm), as long as the motor 250 can drive the second impeller 305, the power required by the motor 250 is less than that of the above-mentioned conventional fan driven by the motor 250. The power required by the impeller (diameter 18 cm to 40 cm) of the device 500 (as shown in FIG. 1 ). Therefore, this embodiment can be matched with a motor device with a smaller power (that is, a small size), so as to save power consumption of the motor device, improve the work efficiency of the motor device, reduce the size of the entire fan device, and reduce the number of fans that cannot enter the wind. area, thereby avoiding wastage of space. In addition, this embodiment can at least maintain the original air volume and rotational torque, and even provide more additional air volume (Q2+Q3).

In addition, please refer to FIG. 4 again. Fig. 4 is a schematic structural diagram of a fan according to a third embodiment of the present invention. One of the differences between the third embodiment and the second embodiment is that a third annular flow guide structure 342 is added to the follower 300b in the third embodiment, and the third annular flow guide structure 342 surrounds the third blades 341, The ends of the third blades 341 are connected to improve the direction of guiding the wind force Q3 generated by the third blades 341 .

In practice, the number of the second blades 320 in this embodiment does not have to be the same or different from the number of the third blades 341 ; better operation effect can be provided if they are different. Designers can adjust the quantity and radial length of the second blades 320 and the third blades 341 according to actual requirements. For example, the radial length of each third blade 341 can be as long as 9 centimeters, 15 centimeters, or even 40 centimeters.

Please refer to FIG. 3A and FIG. 5 . Fig. 5 is a top view of a power fan according to a fourth embodiment of the present invention. Regardless of whether the first blades 230 (as shown in FIG. 3A ) of the second embodiment can extend into the accommodating space 332 , the power fan 201 of the fourth embodiment (as shown in FIG. 5 ) also includes a second annular guide structure 240 , the second annular flow guide structure 240 surrounds the first blades 230 and connects the ends of the first blades 230 . In this way, when the power fan 201 rotates, the inner wall of the second annular flow guide structure 240 can also concentrate and guide the wind Q2 (see FIG. 3A ) generated by the first blades 230 to move toward the accommodating space 332, so as to drive the wind Q2 in a concentrated manner. The wind force Q2 that the second impeller 305 rotates.

Please refer to FIG. 6 again. FIG. 6 is a top view of a follower of a fifth embodiment of the present invention. . One difference between the fan 100b of the fifth embodiment and the fan 100 of the first embodiment is that the first load element 340 (see FIG. 2 ) in the first embodiment can be replaced by a plate 343 in the fifth embodiment . The plate body 343 is, for example, ring-shaped and connected to the outer edge of the first annular flow guide structure 330 . In this way, when the first impeller 210 in FIG. 2 rotates, the second impeller 305 of the follower 300c in FIG. 6 synchronously drives the plate body 343 to rotate. The plate body 343 is used, for example, to carry items.

Please refer to Figure 7. Fig. 7 is a schematic structural diagram of a fan 100c according to a sixth embodiment of the present invention. One of the differences between the sixth embodiment and the first embodiment is that the first load element 340 in the first embodiment can be replaced by one or more first electromagnetic groups 334 a (such as magnets) in the sixth embodiment. The first electromagnetic group 334 a is disposed on the outer edge of the first annular flow guiding structure 330 . In addition, a second electromagnetic group 334b (such as a coil) is provided on a fixed element adjacent to the first electromagnetic group 334a. In this way, when the first impeller 210 of the fan 100c rotates, the second impeller 305 of the follower 300d synchronously drives the first electromagnetic group 334a to rotate, so that the first electromagnetic group 334a in the rotating state will intermittently It interacts with the second electromagnetic group 334b in a stationary state to generate electricity.

Conversely, when there is active electromagnetic interaction between the first electromagnetic group 334a and the second electromagnetic group 334b, the first electromagnetic group 334a can also assist the rotation of the driven member 300d.

However, in addition to the above positions, designers can also change the first electromagnetic group 334a and the second electromagnetic group 334b to other positions of the follower 300d according to actual needs, such as changing the second hub 310 to form a first electromagnetic group 344a (as shown in dotted line in FIG. 7 ), and a second electromagnetic group 344b (as shown in dotted line in FIG. 7 ) corresponding to the first electromagnetic group 344a is formed on a flange 401 of the carrier 400 . Of course, the first electromagnetic groups 334a, 344a and the second electromagnetic groups 334b, 344b can also be formed at the same time as required.

Please refer to Figure 8. FIG. 8 is a top view of a follower 300e and a rotating element W1 according to a seventh embodiment of the present invention. In order to clearly show the relative relationship between the follower 300e and the rotating element W1, the power fan is omitted in this figure.

One difference between this seventh embodiment and the first embodiment is that the first load element 340 (as shown in FIG. 2 ) in the first embodiment can be replaced by one or more belts 346 (such as transmission belts) in the seventh embodiment. ). The belt 346 is sheathed on a rotating unit W1 and the outer edge of the first annular flow guide structure 330 at the same time. In this way, when the first impeller 210 (as shown in FIG. 2 ) rotates, the second impeller 305 of the follower 300e synchronously drives the belt 346 to move, and the belt 346 can further drive the rotation unit W1 to rotate.

Please refer to Figure 9. FIG. 9 is a top view of a follower 300f and another rotating element W2 according to an eighth embodiment of the present invention. In order to clearly show the relative relationship between the follower 300f and the other rotating element W2, the power fan is omitted in this figure.

One difference between the eighth embodiment and the first embodiment is that the first load element 340 (as shown in FIG. 2 ) in the first embodiment can be replaced by a gear set 345 (gear) in the eighth embodiment. The gear set 345 includes a plurality of gear teeth equidistantly surrounding the outer edge of the first annular guide structure 330 . The gear set 345 meshes with another gear set 345' on a rotary unit W2 at the same time. In this way, when the first impeller 210 (as shown in FIG. 2 ) rotates, the second impeller 305 of the follower 300f synchronously drives the gear set 345 to rotate relative to the central axis C, and the gear set 345 meshes with another gear set 345 ', and drive another rotating unit W2 to rotate.

Please refer to Figure 10. Fig. 10 is a schematic structural diagram of a fan according to the ninth embodiment of the present invention. In addition to the first load element 340 of the first embodiment, the fan 100d of the ninth embodiment is further connected with a second load element 350 on the outer edge of the first load element 340 .

The first load element 340 in the ninth embodiment may be the blade, plate, electromagnetic group, gear set or belt mentioned in the first to eighth embodiments of the present invention, while the ninth embodiment The second load element 350 can also be the blade, plate body, electromagnetic group, gear set or belt mentioned in the first embodiment to the eighth embodiment of the present invention, and the designer can reasonably select the second load element according to the teaching of the present invention. The variation of the two load elements 350 provides more synchronous drive applications, thereby providing a more enhanced effect.

For example, in the ninth embodiment, when the first load element 340 is a blade, and the blade has the third annular flow guide structure 342 of the third embodiment (as shown in FIG. 4 ), the second load element 350 It can also be a leaf. The vanes of the second load elements 350 are equidistantly connected to the outer edge of the third annular flow guide structure 342 . In this way, when the first impeller 210 (as shown in FIG. 4 ) rotates, the second impeller 305 of the follower 300g synchronously drives the blades of the first load element 340 and the second load element 350 to rotate relative to the central axis C , to provide additional wind power.

Designers can adjust the number and radial length of the blades of the second blades 320 , the first load element 340 and the second load element 350 according to actual requirements.

To give another example, in the ninth embodiment, when the first load element 340 is a blade, and the blade has the third annular flow guide structure 342 of the third embodiment (as shown in Figure 4), the second load element 350 may be one or more electromagnetic groups (eg, magnets). The electromagnetic group is arranged on the outer edge of the third annular flow guiding structure 342 .

In addition, there is another electromagnetic group (such as a coil) on a fixed element adjacent to the second load element 350 . In this way, when the first impeller 210 rotates (see FIG. 4 ), the electromagnetic set of the second load element 350 interacts with the other electromagnetic set in the stationary state.

It should be noted that:

1. The rotational speed of the first impeller of the fan of the present invention driven by the motor is greater than the rotational speed of the second impeller (that is, the rotational speed of the follower), for example, the rotational speed of the first impeller and the rotational speed of the second impeller can be 3:1, so that The follower can be rotated by the wind force generated by the first impeller. However, designers can adjust the rotational speed of the first impeller driven by the motor and the rotational speed of the second impeller according to actual needs.

2. The power fan and the follower of the fan of the present invention do not have to share the same central axis, and can also rotate on different central axes. In other words, the first impeller and the follower can share the same central axis C (as shown in Figure 2); or as long as the first impeller can provide wind force to rotate the second impeller, the designer can also make the first impeller Rotates on a different central axis from the follower.

3. The radial length of each first blade is substantially the same as the radial length of each second blade, or may be different. However, designers can also adjust the radial lengths of the first vanes and the second vanes according to actual needs.

4. Furthermore, designers can pivot the above-mentioned power fan and follower on the same bearing base (as shown in FIG. 2 ) or on different bearing bases according to actual needs.

5. The designer can also choose the components of the follower (such as the second hub, the second vane, the first annular flow guide structure, the first load element, etc.) to be integrally formed according to actual needs, or assembled separately made.

The above description is only a preferred embodiment of the present invention, so it cannot limit the implementation scope of the present invention, that is, equivalent changes and modifications made according to the content of the description of the present invention should still fall within the scope of the present invention.

Claims (13)

1. A fan, comprising: A power fan has a first impeller and a motor; a bearing seat; and A follower rotated by the wind force of the power fan, including: a second impeller; and at least one first load element coupled to the second impeller, Wherein, the first impeller includes a first hub and a plurality of first blades, and the first blades are arranged on the first hub; and the second impeller faces the first impeller and includes a first Two hubs, a plurality of second blades and at least one first annular guide structure, wherein the second hub is pivoted on the bearing seat, the second blades are surrounded by the second hub, the first An annular guide structure is arranged around the ends of the second blades, Wherein the inner wall of the first annular flow guide structure surrounds an accommodating space, at least part of the first vanes extend into the accommodating space, Wherein the inner wall of the first annular flow guide structure is inclined to a central axis of the power fan, and the inner wall gradually increases inclination toward the first impeller. 2. The fan according to claim 1, wherein the first load element is a plate, at least one first electromagnetic set, at least one gear set or at least one belt. 3. The fan according to claim 1, wherein the first electromagnetic group is arranged on the second hub, and a second electromagnetic group that can interact is provided on a flange of the bearing seat corresponding to the position of the first electromagnetic group. Group. 4. The fan of claim 1, wherein the first load element comprises a plurality of third blades. 5. The blower according to claim 4, wherein the number of the second blades is different from that of the third blades. 6 . The fan according to claim 4 , wherein the follower further has a third annular flow guide structure, the third annular flow guide structure surrounds the third blades and connects the ends of the third blades. 7. The fan according to claim 4, wherein the radial length of each of the third blades is greater than 9 cm. 8 . The fan according to claim 1 , further comprising a plurality of fourth blades, the fourth blades are equidistantly connected to the outer edge of the first load element. 9. The fan according to claim 1, further comprising a second load element disposed on the first load element, wherein the second load element is a plate, at least one third electromagnetic group, at least one gear set or at least one strap. 10 . The blower according to claim 1 , wherein the first impeller further comprises at least one second annular flow guiding structure, which is arranged around the ends of the first blades. 11 . 11. The fan according to claim 1, wherein the power fan is arranged on the bearing base or another bearing base. 12. The fan according to claim 1, wherein the rotational speed of the power fan is greater than the rotational speed of the driven member. 13. The fan according to claim 1, wherein a central axis of the power fan overlaps with a central axis of the driven member.