TWI710707B - Impeller for power drive - Google Patents

Abstract

The invention relates to an impeller for power driving, which comprises a hub, a plurality of fixed arms and a plurality of blades. The hub is used to combine a rotating shaft of a machine that uses wind, water or tidal current as driving energy. The plurality of fixed arms are separately arranged on the hub along the circumferential direction of the hub, and each of the fixed arms extends along a radial direction that is substantially perpendicular to the axial direction of the rotating shaft. The blades are elastically fixed on one of the fixed arms, so that the plurality of blades can be elastically moved relative to the plurality of fixed arms when subjected to external force and can return to the original shape when the external force is removed.

Description

Impeller for power drive

The present invention relates to an impeller for power driving, in particular to an impeller that can work in machinery or equipment that uses wind, water or tidal currents as driving energy.

Generators that can use wind, water or tidal current as driving energy are usually composed of impellers (ROTOR), transmission systems, power generation systems, towers and other components. The impeller is mounted on a wheel shaft and has blades that can be affected by fluid (gas or liquid). When the blades are affected by the airflow, the impeller will rotate around a rotating shaft to convert wind energy into mechanical energy, then increase the speed through the transmission system, and then transfer the power to the power generation system to convert it into useful electrical energy. Furthermore, there is a type of windmill that uses an impeller to rotate around a rotating shaft and cooperate with a transmission system to drive water diversion irrigation equipment or grain milling equipment.

A conventional impeller system includes a hub coupled to a rotating shaft, a plurality of frames coupled to the hub in a radiating shape, and at least one movable blade and at least one blocking member coupled to each frame. The movable blade can rotate relative to the skeleton, and the blocking member is used to limit the rotation angle of the movable blade. When the movable blade is rotated by the wind for a predetermined angle and then touches the blocking member, the movable blade will generate resistance to the air flow, so that the impeller will rotate around the rotating shaft. However, the movable blades that are rotated relative to the skeleton by the wind are easily worn out after a period of use and often require maintenance and have a low service life. In addition, conventional impellers have many elements, complex structures, time-consuming assembly, and relatively high costs.

For this reason, the main purpose of the present invention is to provide an impeller for power driving. The impeller has fixed elastic blades, so that the structure of the impeller is simplified and the service life is improved.

The impeller of the present invention includes a hub, a plurality of first fixed arms and a plurality of inner blades. The hub is used to combine a rotating shaft of a machine that uses wind, water or tidal current as driving energy. The plurality of first fixed arms are separately arranged on the hub along the circumferential direction of the hub, and each of the first fixed arms extends along a radial direction that is substantially perpendicular to the axial direction of the rotating shaft. The plurality of first fixed arms can rotate on a fixed plane perpendicular to the rotating shaft to drive the rotating shaft. Each inner blade is elastically fixed to a corresponding first fixed arm and extends outward from the outer surface of the corresponding first fixed arm in a direction parallel to the fixed plane, so that the plurality of inner blades can be subjected to external force. Relative to the plurality of first fixed arms, there is a first bending direction or a second bending direction opposite to the first bending direction, which is elastically movable and can return to its original shape when the external force is removed. The first and second bending directions are respectively The fixed plane is vertical.

In an embodiment, the inner blade is made of elastic material and one side of the inner blade is combined with the corresponding first fixed arm, so that the plurality of inner blades are respectively elastically fixed on the plurality of first fixed arms and When subjected to external force, it will not rotate relative to the plurality of first fixed arms but can bend.

In one embodiment, the inner blade is made of rigid material, and an elastic connecting piece is provided between the inner blade and the first fixed arm. The elastic connecting piece has an inner end and an outer end, and the inner end is combined with On the first fixed arm and the outer end is combined with the inner blade. In another embodiment, two springs are provided between the inner blade and the first fixed arm, each spring has a first end and a second end, and the first end of the two springs respectively abuts against the first fixed arm. Arm, the second ends of the two springs respectively abut against two opposite sides of the inner blade, so that the plurality of inner blades are elastically fixed to the complex And the two springs respectively provide elastic recovery of the inner blade in the first bending direction and the second bending direction relative to the first fixed arm.

In a preferred embodiment, each of the first fixing arms includes a first end coupled to the hub and a second end away from the hub. The impeller further includes a plurality of second fixed arms and a plurality of outer blades. Each second fixed arm is combined with a second end of one of the first fixed arms, and each outer blade is elastically fixed to a corresponding second fixed arm, so that The plurality of outer blades can be elastically movable relative to the plurality of second fixed arms when subjected to an external force, and can return to the original shape when the external force is removed.

In one embodiment, each second fixing arm extends along a longitudinal direction that is substantially perpendicular to the radial direction. The extending direction of each outer blade and the radial direction can form a non-perpendicular angle oblique configuration.

The other objects, advantages and features of the present invention will be understood from the detailed description of the following preferred embodiments with reference to the accompanying drawings.

10: Impeller

12: Wheel hub

14: The first fixed arm

16: inner blade

18: second fixed arm

20: Outer blade

22: Generator

24: shaft

26: Tower Column

28: first end

30: second end

32: groove

34: Clip

36: first side

38: second side

40: fixed parts

42: groove

44: Clip

46: first side

48: second side

50: fixed parts

52: Wind

54: Groove

56: Elastic connecting piece

58: inner end

60: outer end

61: Joint

62: Spring

64: lug

66: Room

68: shaft

70, 72: end

Figure 1 is a perspective view of the impeller of the first embodiment of the present invention, and shows that the impeller is assembled on the shaft of a wind generator.

Figure 2 is a plan view of the impeller and generator of Figure 1.

Fig. 3 shows an exploded schematic view of the first fixed arm and inner blade of the impeller of Fig. 1.

Fig. 4 shows a schematic diagram of the blades in the part of the impeller of Fig. 1 being rotated by wind.

Fig. 5 shows a schematic diagram of part of the outer blades of the impeller of Fig. 1 being rotated by wind.

Fig. 6 is a perspective view of an impeller according to a second embodiment of the present invention, and shows that the impeller is assembled on the shaft of a wind generator.

Figure 7 is a plan view of the impeller and generator of Figure 6;

Fig. 8 is a perspective view similar to Fig. 1 showing the impeller of the third embodiment of the present invention.

Fig. 9 is a perspective view similar to Fig. 1 showing the impeller of the fourth embodiment of the present invention.

Fig. 10 is a perspective view similar to Fig. 3, showing a fixed arm and a blade according to another embodiment of the present invention.

Fig. 11 is a perspective view similar to Fig. 3, showing a fixed arm and a blade according to another embodiment of the present invention.

The specific embodiments are only examples but not intended to limit, and with reference to the accompanying drawings, the preferred content of the present invention is described as follows: FIGS. 1 to 3 show an impeller 10 according to an embodiment of the present invention. It can work in fluids such as airflow (wind), water current, tidal current, etc., so that the flow energy of the fluid can drive the impeller 10 to rotate, and then drive a device (such as water diversion and irrigation equipment or grain milling equipment) to operate or transmit power to a Power generation system to generate electricity.

In this embodiment, a power generation system is used as an embodiment for illustration. The impeller 10 includes a hub 12, a plurality of first fixed arms 14, at least one inner blade 16 combined with each first fixed arm 14, a plurality of second fixed arms 18, and a plurality of second fixed arms 18 At least one outer blade 20. The hub 12 is used to combine a rotating shaft 24 of a generator 22, and the generator 22 is supported by a pylon 26 so that the center of rotation of the impeller 10 has a certain height. The structure of the generator 22 is a conventional technology and can be replaced by other power equipment. It is not a technical feature of this case and will not be detailed here.

In this embodiment, the impeller 10 includes five first fixed arms 14 and five second fixed arms 18. In a feasible embodiment, the impeller 10 may include three, four, or more than five first and second fixed arms 14 and 18. The five first fixed arms 14 are separately arranged on the hub 12 along the circumferential direction of the hub 12. Each first fixed arm 14 extends along a radial direction and includes a first end 28 coupled to the hub 12 And the second end 30 away from the hub 12, the radial direction is perpendicular to the axial direction of the shaft 24 straight. Each first fixed arm 14 is constituted by, for example, a round rod made of a rigid material. The outer surface of each first fixed arm 14 is provided with a groove 32, and the groove 32 extends along the length direction (ie, the radial direction) of the first fixed arm 14. In this embodiment, the outer surface of each first fixed arm 14 is further provided with two pairs of separated clamping portions 34, and each pair of clamping portions 34 protrude outward from the outer surface of the first fixed arm 14 and are formed by the groove 32. Separate.

In this embodiment, each first fixed arm 14 is provided with two separated inner blades 16, and each inner blade 16 is elastically fixed on the first fixed arm 14, so that the inner blade 16 will not be affected by external force. It rotates relative to the first fixed arm 14 but can be bent and can return to its original shape when the external force is removed. In this embodiment, the inner blade 16 is made of an elastic material and has a first side 36 coupled to the first fixed arm 14 and a second side 38 away from the first fixed arm 14. The first side of each inner blade 16 One side 36 is inserted into the groove 32 of the first fixing arm 14 and is located in a pair of clamping parts 34, and a fixing member 40 such as a screw is used to pass through the pair of clamping parts 34 and the first side 36 of the inner blade 16. Therefore, the inner blade 16 is fixed on the first fixed arm 14 non-rotatably.

In this embodiment, each second fixing arm 18 is coupled to the second end 30 of one of the first fixing arms 14 and extends along a longitudinal direction substantially perpendicular to the radial direction. Each second fixed arm 18 may be composed of, for example, a round rod made of a rigid material and has a structure similar to the first fixed arm 14. The outer surface of each second fixing arm 18 is provided with a groove 42 and two pairs of separated clamping portions 44 for providing the outer blade 20 to be combined. The groove 42 extends along the length direction (ie, the longitudinal direction) of the second fixed arm 18, and each pair of clamping portions 44 protrude outward from the outer surface of the second fixed arm 18 and are separated by the groove 42.

In this embodiment, each second fixed arm 18 is provided with two separate outer blades 20, and each outer blade 20 is elastically fixed on the second fixed arm 18, so that the outer blade 20 will not be affected by external force. It rotates relative to the second fixed arm 18 but can be bent and can return to its original shape when the external force is removed. In this embodiment, the structure of each outer blade 20 is similar to that of the inner blade 16, which is made of elastic material. Each outer blade 20 extends along the longitudinal direction and has a first side 46 coupled to the second fixed arm 18 and a second side 48 away from the second fixed arm 18. The first side 46 of each outer blade 20 is inserted into the groove 42 of the second fixing arm 18 and is located in a pair of clamping parts 44, and a fixing member 50 such as a screw is used to pass through the pair of clamping parts 44 and the outer blade 20 The first side 46 makes the outer blade 20 fixed on the second fixed arm 18 non-rotatably.

The impeller 10 of the present invention can use fluid such as air flow (wind), water flow, or tidal current as a driving energy source. When airflow is used as the driving energy source, the impeller 10 is installed on the ground, and when the water flow or tidal current is used as the driving energy source, the impeller 10 is installed under the water surface. In this embodiment, airflow is used as a driving energy source to illustrate the operation of the impeller 10 in implementation. As shown in FIG. 4, when the wind 52 blows toward the impeller 10 from a direction that is substantially perpendicular to the inner blade 16 or forms an angle, at least part of the inner blade 16 will be affected by the wind force, causing the inner blade 16 Will bend relative to the first fixed arm 14 to drive the plurality of first fixed arms 14, so that the impeller 10 will rotate clockwise (as shown by the dashed line in FIG. 4) to drive the shaft 24, and then transmit wind energy to the The power generation system in the generator 22 generates electricity; on the other hand, when the wind 52 in FIG. 4 is blown to the impeller 10 in the opposite direction, the inner blade 16 will also be affected by the wind, causing the inner blade 16 to generate relative to the first fixed arm 14 Bending, so that the impeller 10 will also rotate clockwise to drive the shaft 24. On the other hand, as shown in FIG. 5, when the wind 52 is blown toward the impeller 10 from a direction that is substantially perpendicular to or forms an angle with the outer blade 20, at least part of the outer blade 20 will be affected by the wind. The outer blade 20 is bent relative to the second fixed arm 18, so that the impeller 10 will rotate clockwise (as shown by the dashed line in FIG. 5) to drive the shaft 24, and then transmit wind energy to the power generation in the generator 22 System to generate electricity. Therefore, the wind 52 from various directions can generate wind force on at least part of the inner blades 16 and/or the outer blades 20, so that the impeller 10 can rotate, so as to effectively utilize the wind energy of different wind directions to drive the generator 22 to generate electricity.

Since the blades (inner and outer blades 16, 20) of the impeller 10 of the present invention can be elastically bent and fixed on the fixed arms (the first and second fixed arms 14, 18), when the blades 16, 20 are subjected to wind It does not rotate relative to the fixed arms 14, 18, and can return to the original fixed position when the wind is removed, so there is no need to additionally provide the prior art stopper to limit the rotation angle of the blade, which can simplify the structure of the impeller 10 And assembly, and because the blades 16, 20 will not rotate relative to the fixed arms 14, 18, the wear problem caused by rotation can be improved, and the service life can be effectively increased.

6 and 7 show the impeller 10 according to the second embodiment of the present invention, in which it is shown that the extension direction of the second fixed arm 18 is not substantially parallel to the axial direction of the rotating shaft 24, and the extension direction of the outer blade 20 is aligned with the radial direction. Form a non-vertical angle oblique configuration.

8 and 9 show the impeller 10 according to the third and fourth embodiments of the present invention, in which Fig. 8 shows that the impeller 10 does not have the second fixed arm 18 and outer blades 20, and Fig. 9 shows that the impeller 10 does not have the inner blades 16 .

The fixed arms (first and second fixed arms 14, 18) and blades (inner and outer blades 16, 20) of the present invention can have other feasible embodiments. Two embodiments are illustrated in FIGS. 10 and 11 . In the embodiment of FIG. 10, the inner blade 16 (or outer blade) is made of rigid material, and one end of the inner blade 16 has a groove 54. Furthermore, an elastic connecting piece 56 is provided between the inner blade 16 and the first fixing arm 14. The elastic connecting piece 56 has an inner end 58 and an outer end 60, and the inner end 58 is inserted into the first fixing arm. The outer end 60 is inserted into the groove 54 of the inner blade 16 and is combined with a fixing member 40 such as a screw. By the arrangement of the elastic connecting piece 56, The inner blade 16 is elastically fixed to the first fixed arm 14 and will not rotate relative to the first fixed arm 14 when subjected to external force, but can swing or tilt at an angle relative to the first fixed arm 14 (not shown).

In the embodiment of FIG. 11, the inner blade 16 (or outer blade) is made of rigid material Moreover, one end of the inner blade 16 has a coupling portion 61, and two springs 62 are provided between the inner blade 16 and the first fixed arm 14. The outer surface of the first fixed arm 14 (or the second fixed arm) protrudes outwardly with two pairs of lugs 64, and there is a chamber 66 between each pair of lugs 64 to accommodate one of the springs 62, and a shaft The rod 68 passes through the two pairs of lugs 64, the two springs 62 and the joint 61 of the inner blade 16, so that the two ends 70 and 72 of the spring 62 abut the first fixed arm 14 and the inner blade 16 respectively. Accordingly, the inner blade 16 (or outer blade) is elastically fixed to the first fixed arm 14 (or second fixed arm) and can be opposed to the first fixed arm 14 (or second fixed arm) when subjected to external force. Swing at an angle and return to the original state when the external force is removed.

The above only lists a few preferred embodiments for illustration. Any known technique can be used to drive the inner blade 16 to be elastically fixed to the first fixed arm 14 or to drive the outer blade 20 to be elastically fixed to the second fixed arm 18. , Should all belong to the scope of the implementation of this case. In a feasible embodiment, in addition to the implementation using springs, magnetic objects can be used to form elastic fixation (positioning) between the inner and outer blades 16, 20 and the first and second fixed arms 16, 20, for example, The inner and outer blades connected to the first and second fixed arms are provided with a first magnetic object, and the first and second fixed arms are provided with a second magnetic object corresponding to the first magnetic object. Under the implementation of the magnetic attraction or repulsion between the magnetic object and the second magnetic object, the inner and outer blades are driven to be magnetically positioned on the opposite first and second fixed arms, and the inner and outer blades have Resilience of magnetic traction.

The above are the detailed descriptions and drawings of the preferred embodiments of the present invention, and are not intended to limit the present invention. All the scope of the present invention should be subject to the following patent scope, and the spirit of the patent scope and similar modified embodiments Both and similar structures should be included in the present invention.

10‧‧‧Impeller

12‧‧‧Wheel

14‧‧‧First fixed arm

16‧‧‧Inner blade

18‧‧‧Second fixed arm

20‧‧‧Outer blade

22‧‧‧Generator

24‧‧‧Shaft

26‧‧‧Tower

28‧‧‧First end

30‧‧‧Second end

36‧‧‧First side

38‧‧‧Second side

42‧‧‧Groove

44‧‧‧Clip

46‧‧‧First side

48‧‧‧Second side

50‧‧‧Fixture

Claims (15)

An impeller for power driving, comprising: a hub for coupling with a rotating shaft; a plurality of first fixed arms, which are separately arranged on the hub along the circumferential direction of the hub, and each first fixed arm is along a radial direction Extending, the radial direction is substantially perpendicular to the axial direction of the rotating shaft, wherein the plurality of first fixed arms can rotate on a fixed plane perpendicular to the rotating shaft to drive the rotating shaft; and a plurality of inner blades, each of which is elastically fixed On a corresponding first fixed arm and extend outward from the outer surface of the corresponding first fixed arm in a direction parallel to the fixed plane, so that the plurality of inner blades can be opposed to the plurality of first fixed arms when subjected to external force The elastic movement with a first bending direction or a second bending direction opposite to the first bending direction drives the plurality of first fixed arms to rotate in a single direction on the fixed plane, and can return to the original state when the external force is removed, The first and second bending directions are respectively perpendicular to the fixed plane. For the power driving impeller described in item 1 of the scope of patent application, the inner blade is made of elastic material and one side of the inner blade is coupled to the corresponding first fixed arm, so that the plurality of inner blades are elastically respectively It is fixed on the plurality of first fixed arms and does not rotate relative to the plurality of first fixed arms when subjected to external force, but can be bent. In the impeller for power driving as described in the first item of the scope of patent application, the inner blade is made of rigid material, and an elastic connecting piece is provided between the inner blade and the first fixed arm, and the elastic connecting piece has an inner The inner end is connected to the first fixed arm and the outer end is connected to the inner blade, so that the plurality of inner blades are respectively elastically fixed on the plurality of first fixed arms. The impeller for power driving as described in item 1 of the scope of patent application, wherein the inner blade is made of rigid material, and two springs are provided between the inner blade and the corresponding first fixed arm, and each spring has There are first and second ends, the first ends of the two springs are respectively against the first fixed arm, and the second ends of the two springs are respectively against the two opposite sides of the inner blade, so that the plurality of inner blades The two springs are respectively elastically fixed on the plurality of first fixed arms, and the two springs respectively provide elastic recovery of the inner blade in the first bending direction and the second bending direction relative to the first fixed arm. The impeller for power driving according to any one of items 1 to 4 in the scope of the patent application, wherein each first fixed arm includes a first end coupled to the hub and a second end away from the hub; the impeller further includes : A plurality of second fixed arms, each of which is combined with the second end of one of the first fixed arms; and a plurality of outer blades, each of which is elastically fixed on a corresponding second fixed arm, so that the plurality of outer blades The blade can be elastically movable relative to the plurality of second fixed arms when subjected to an external force, and can return to its original shape when the external force is removed. According to the power driving impeller described in item 5 of the scope of patent application, the outer blade is made of elastic material and one side of the outer blade is combined with the corresponding second fixed arm. The impeller for power driving as described in item 5 of the scope of patent application, wherein the outer blade is made of rigid material, an elastic connecting piece is provided between the outer blade and the second fixed arm, and the elastic connecting piece has an inner End and an outer end, the inner end is connected to the second fixed arm and the outer end is connected to the outer blade. According to the power driving impeller described in item 5 of the scope of patent application, each of the second fixed arms extends along a longitudinal direction substantially perpendicular to the radial direction. In the impeller for power driving described in item 5 of the scope of patent application, the extending direction of each outer blade forms a non-perpendicular angle with the radial direction and is arranged obliquely. An impeller for power driving, including: A hub for coupling with a rotating shaft; a plurality of first fixed arms, which are separately arranged on the hub along the peripheral direction of the hub, and each first fixed arm extends along a radial direction and includes being coupled to the hub The first end and the second end away from the hub, the radial direction is substantially perpendicular to the axial direction of the rotating shaft; a plurality of second fixed arms, each of which is combined with the second end of one of the first fixed arms; And a plurality of outer blades, each outer blade is elastically fixed to a corresponding second fixed arm, so that the plurality of outer blades can be elastically movable relative to the plurality of second fixed arms when subjected to an external force, and can recover when the external force is removed Undisturbed. For the power driving impeller described in item 10 of the scope of patent application, the outer blade is made of elastic material and one side of the outer blade is coupled to the corresponding second fixed arm, so that the plurality of outer blades are subjected to external force When acting, it will not rotate relative to the plurality of second fixed arms but can bend. For the power driving impeller described in item 10 of the scope of patent application, wherein the outer blade is made of rigid material, an elastic connecting piece is provided between the outer blade and the second fixed arm, and the elastic connecting piece has an inner End and an outer end, the inner end is connected to the second fixed arm and the outer end is connected to the outer blade. For the power driving impeller described in item 10 of the scope of patent application, the outer blade is made of rigid material, and at least one spring is provided between the outer blade and the second fixed arm, and the two ends of the spring are respectively Abut the second fixed arm and the outer blade. In the impeller for power driving as described in item 10 of the scope of patent application, each of the second fixed arms extends along a longitudinal direction substantially perpendicular to the radial direction. In the impeller for power driving described in item 10 of the scope of patent application, the extending direction of each outer blade forms a non-perpendicular angle with the radial direction and is arranged obliquely.

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