CN205876804U - Fan and power equipment - Google Patents

Abstract

The utility model relates to a heat rejection apparatus technical field, in particular to fan and power equipment. The utility model provides a fan, change epaxial flabellum subassembly with installing in the flabellum including the flabellum pivot, the flabellum pivot is used for driving with power equipment's output shaft and is connected so that the flabellum pivot can drive the flabellum subassembly rotates round the center of rotation, the flabellum subassembly includes the flabellum, and the export radius of flabellum can change along with the change of output shaft rotational speed, and the rotational speed of the export radius of flabellum and output shaft becomes the negative correlation, and the export radius of flabellum is the export of flabellum and the distance between the center of rotation. The utility model discloses a fan, though power equipment with less rotational speed during operation, still can provide sufficient air mass flow, guarantee the radiating effect, satisfy the heat dissipation demand.

Description

Fan and power-equipment

Technical field

This utility model relates to heat dissipation equipment and technical field of power equipment, particularly to a kind of fan and power-equipment.

Background technology

Existing fan, its flabellum is all fixedly disposed in flabellum rotating shaft, and the air mass flow carried provides with for it The rotating speed of the power-equipment of power becomes positive correlation, and i.e. when the rotating speed of power-equipment is bigger, fan can carry more air Flow, produces stronger radiating effect, and when the rotating speed of power-equipment is less, then the air mass flow that fan is carried is less, Radiating effect is poor.Based on this, when the invariablenes turning speed of power-equipment, fan can produce relatively stable radiating effect, so And, when the variable speed of power-equipment, fan is then difficult to produce preferably heat radiation when power-equipment is with less rotary speed working Effect, it is impossible to meet radiating requirements.Below for for illustrating as a example by the fan of motor heat dissipation.

Motor is a kind of power-equipment that can convert electrical energy into mechanical energy, owing to there is energy in the course of the work Lose, and the energy lost can be converted into heat energy and accumulate in motor interior, if can not effectively dispel the heat, then can affect electronic The normal work of machine, therefore, motor generally arranges fan, utilizes fan to order about air flowing, dispels the heat motor.

In the prior art, for rotating speed constant treat radiation electromotor, fan all directly with treat that radiation electromotor drives Connect, make fan rotate under the drive treating radiation electromotor.It is in this case, constant owing to treating radiation electromotor rotating speed, Therefore, fan can provide stable air mass flow and treat that radiation electromotor carries out heat exchange, it is achieved effective radiating effect.

But, radiation electromotor being treated for variable speed, being treated, by this, the fan that radiation electromotor drives if still arranging, then This until radiation electromotor low speed rotation time, fan can only provide less air mass flow, and radiating effect is poor.Therefore, in order to Ensure to can still provide for preferably dispelling the heat until radiation electromotor fan when rotating speed is relatively low, prior art can only arrange independent wind Motor is dispelled the heat by fan, and this independent fan is no longer by treating that radiation electromotor drives, but carries motor, and at this Carry and rotate under the drive of motor.Pass through this set so that the motion of air is unrelated with the rotating speed treating radiation electromotor, i.e. Making when radiation electromotor rotating speed is relatively low, fan still is able to provide more sufficient air mass flow, and treating radiation electromotor has Effect heat radiation.

But, this utilization carries the mode that the separate fan of motor carries out dispelling the heat, on the one hand, owing to being additionally required one Platform motor driven fan, so it is relatively costly, structure and manufacturing process are the most complicated；On the other hand, separate fan is set The loss that variable speed motor is overall can be increased, reduce the whole efficiency of motor；Another further aspect, the extra motor increased Can be increased speed the overall dimensions of variable motor, and the volume making variable speed motor is relatively big, and heavier-weight affects installation side Just property.

Utility model content

A technical problem to be solved in the utility model is: existing fan, its flabellum is all fixedly disposed at fan In leaf rotating shaft, and the air mass flow that carried of fan depends on the rotating speed of power-equipment that provides power for it, and fan is at power When equipment is with less rotary speed working, it is difficult to meet radiating requirements.

In order to solve above-mentioned technical problem, this utility model provides a kind of fan and a kind of power-equipment.

Fan provided by the utility model, including flabellum rotating shaft and the flabellum assembly that is installed in flabellum rotating shaft, flabellum Rotating shaft is used for the output shaft drive connection with power-equipment so that flabellum rotating shaft can drive flabellum assembly to turn around center of rotation Dynamic；Flabellum assembly includes flabellum, and the exit radius of flabellum can change along with the change of output shaft rotating speed, and the outlet of flabellum Radius becomes negative correlation with the rotating speed of output shaft, and the exit radius of flabellum is the distance between outlet and the center of rotation of flabellum.

Alternatively, flabellum changes by making centrifugal or centripetal motion when output shaft rotation speed change relative to center of rotation The size of flabellum exit radius.

Alternatively, flabellum assembly is slidably mounted in flabellum rotating shaft；Flabellum assembly also includes balance weight body, attachment structure And elastic component, balance weight body is connected with flabellum by attachment structure, and balance weight body is positioned at the both sides of center of rotation with flabellum, works as output During axle rotation speed change, flabellum can do centrifugal or centripetal motion relative to center of rotation under the drive of balance weight body；Elastic component Resilient force in flabellum, and, when output shaft stabilization of speed, elastic component can make flabellum assembly be in stress balance shape State.

Alternatively, flabellum rotating shaft is provided with the installation guide part corresponding with flabellum assembly, installs guide part and flabellum assembly Coordinating makes flabellum assembly be movably arranged in flabellum rotating shaft.

Alternatively, flabellum assembly with the roughness on surface that guide part coordinates is installed less than or equal to 3.2, and/or, pacify The roughness on the surface coordinated with flabellum assembly of dress guide part is less than or equal to 3.2.

Alternatively, guide part is installed and includes that arranging position installs about the first installing port and second that center of rotation is symmetrical Mouthful, flabellum assembly through the first installing port and the second installing port and with the first installing port and the equal matched in clearance of the second installing port, with Enable flabellum assembly relative to flabellum rotating shaft moving radially along flabellum rotating shaft.

Alternatively, installing guide part can also prevent flabellum from doing relative to center of rotation by coordinating with flabellum assembly Flabellum rotating shaft is departed from during centripetal or centrifugal motion.

Alternatively, attachment structure includes the first connecting portion being connected with flabellum and the second connecting portion being connected with balance weight body, First connecting portion passes the second installing port, so that flabellum and balance weight body are respectively positioned on flabellum through the first installing port and the second connecting portion The outside of rotating shaft；The face size near the first installing port of flabellum is more than the face size of the first installing port；Leaning on of balance weight body The face size of nearly second installing port is more than the face size of the second installing port.

Alternatively, fan includes that at least two flabellum assembly, at least two flabellum assembly are installed on flabellum non-interferencely In rotating shaft.

Alternatively, fan includes that at least two flabellum assembly, at least two flabellum assembly are installed on flabellum non-interferencely In rotating shaft；Wherein, the attachment structure of each flabellum assembly all includes what the first connecting portion being connected with flabellum was connected with balance weight body Second connecting portion and the relief portion being connected between the first connecting portion and the second connecting portion, relief portion makes the attachment structure of correspondence Have allow that other attachment structures extend there through dodge between space, and any two relief portion along flabellum rotating shaft axial There is interval, so that at least two flabellum assembly is non-interference.

Alternatively, each relief portion includes First Transition portion, the second transition part and middle interconnecting piece, First Transition portion along Axially arranged and the First Transition portion of flabellum rotating shaft is connected with the first connecting portion, and the second transition part is axial along flabellum rotating shaft Setting and the second transition part and the second connecting portion connect, middle interconnecting piece being radially arranged and middle interconnecting piece along flabellum rotating shaft It is connected between First Transition portion and the second transition part be formed and dodges space；Edge between the middle interconnecting piece of any two relief portion That flabellum rotating shaft axially has interval.

Alternatively, middle interconnecting piece is straight-bar, shaped form bar or fold-line-shaped bar.

Alternatively, flabellum rotating shaft being additionally provided with axial connecting part, axial connecting part is used for axially wearing along flabellum rotating shaft Cross flabellum rotating shaft and realize being axially connected between flabellum rotating shaft and output shaft；Each middle interconnecting piece is also configured such that axle To connector can along flabellum rotating shaft axially across flabellum rotating shaft.

Alternatively, each middle interconnecting piece is shaped form bar or fold-line-shaped bar, and each middle interconnecting piece away from The different directions of center of rotation protrudes.

Power-equipment provided by the utility model, including output shaft and fan of the present utility model.

Fan provided by the utility model, the exit radius of its flabellum can be that negative correlation becomes along with power-equipment rotating speed Changing, therefore, when power-equipment rotating speed diminishes, the exit radius of flabellum can be automatically increased, even if so that setting at power For during with less rotary speed working, fan of the present utility model remains able to provide more sufficient air mass flow, it is ensured that radiating effect, Meet radiating requirements.

By referring to the drawings exemplary embodiment of the present utility model being described in detail, of the present utility model its Its feature and advantage thereof will be made apparent from.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only It is embodiments more of the present utility model, for those of ordinary skill in the art, before not paying creative work Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 illustrates the blast of the fan in this utility model one embodiment and the combinative structure of the output shaft of power-equipment Figure.

Fig. 2 illustrates the structural representation of flabellum rotating shaft in Fig. 1.

Fig. 3 a and Fig. 3 b illustrates the operation principle schematic diagram of this utility model fan.

Fig. 4 illustrates the flabellum assembly of another embodiment of this utility model and the assembling structural representation of flabellum rotating shaft.

In figure:

1, flabellum rotating shaft；11, the first installing port；12, the second installing port；13, seam；14, the first keyway；

2, flabellum assembly；21, flabellum；22, attachment structure；221, the first connecting portion；222, the second connecting portion；223, dodge Portion；2231, First Transition portion；2232, the second transition part；2233, middle interconnecting piece；23, balance weight body；24, spring；

3, end cap；

4, screw；

5, output shaft；51, the second keyway.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Description only actually at least one exemplary embodiment is illustrative below, never as to this practicality Any restriction that is novel and that apply or use.Based on the embodiment in this utility model, those of ordinary skill in the art are not having Have and carry out the every other embodiment obtained under creative work premise, broadly fall into the scope of this utility model protection.

May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable In the case of when, described technology, method and apparatus should be considered to authorize a part for description.

In description of the present utility model, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " horizontal, Vertically, vertically, level " and the indicated orientation such as " top, the end " or position relationship be normally based on orientation shown in the drawings or position Put relation, be for only for ease of description this utility model and simplify description, in the case of illustrating on the contrary, these nouns of locality Do not indicate that and imply that the device of indication or element must have specific orientation or with specific azimuth configuration and operation, because of This is it is not intended that restriction to this utility model protection domain；The noun of locality " inside and outside " refers to the wheel relative to each parts itself Wide is inside and outside.

In description of the present utility model, it is to be understood that use the word such as " first ", " second " to limit zero Part, it is only for being easy to distinguish corresponding parts, as not having Stated otherwise, above-mentioned word does not has particular meaning, Therefore it is not intended that restriction to this utility model protection domain.

Fig. 1-4 shows the structure and working principle of this utility model fan.With reference to Fig. 1-4, this utility model is provided Fan, it includes flabellum rotating shaft 1 and the flabellum assembly 2 being installed in flabellum rotating shaft 1, wherein: flabellum rotating shaft 1 for and power Output shaft 5 drive connection of equipment is so that flabellum rotating shaft 1 can drive flabellum assembly 2 to rotate around center of rotation；Flabellum assembly 2 Including flabellum 21, the exit radius of flabellum 21 can change along with the change of output shaft 5 rotating speed, and the exit radius of flabellum 21 Negative correlation is become with the rotating speed of output shaft 5.

In this utility model, the exit radius of flabellum 21 is the distance between outlet and the center of rotation of flabellum 21.

This utility model is by becoming negative along with power-equipment rotating speed by the exit radius that fan design is flabellum 21 Close change so that when motivation mechanism rotating speed diminishes, the exit radius of flabellum 21 can become big automatically.

In hydrodynamics, the air of the Unit Weight carried by fan rises in value to the energy exported from import, also It is exactly the air of the Unit Weight lift H (unit is m) that flows through the effective energy that fan is obtained, referred to as fan.

Air can change into the kinetic energy of air through the energy overwhelming majority that passing through fan is obtained.Know according to fluid dynamic Knowing and understand, when fan rotates, in flabellum import department, on the one hand air makees circumference transport motion along with flabellum rotates, its circumference Speed is u₁；Make the most again flowing relatively along flabellum direction, its relative velocity is w₁.Therefore, absolute in import department of air Speed v₁Should be u₁And w₁Vector, import tangential-velocity component is v_u1.In like manner, in flabellum exit, peripheral speed u of air₂ With relative velocity w₂Vector be absolute velocity v₂, outlet tangential-velocity component is v_u2。

Thus, according to Eulerian equation, the theoretical head H of fan_TComputing formula as follows:

$H_T=\frac{1}{g}\·(u_2\·v_{u2}-u_1\·v_{u1})$

When designing fan, always make import absolute velocity v₁With import peripheral speed u₁Operating angle be 90 °, i.e. import Tangential-velocity component is v_u1It is 0, due to u in this case₁·v_u1=0, so, above-mentioned theory lift H_TComputing formula permissible It is reduced to:

$H_T=\frac{1}{g}\·u_2\·v_{u2}$

Thus reduced equation is it can be seen that the energy that obtained through passing through fan of air, with peripheral speed u of flabellum outlet₂ Tangential-velocity component v with flabellum outlet_u2Relevant.And owing to the computing formula of peripheral speed is:Therefore, wind Fan lift H becomes positive correlation with flabellum exit radius, namely when flabellum rotating speed is certain, flabellum exit radius is the biggest, then fan is raised Journey H is the biggest, and air flows through that the kinetic energy that fan obtained is the biggest, and the air mass flow that unit interval fan is carried is the biggest, heat radiation effect Fruit is the best.

From above-mentioned theory analysis result, flabellum 21 is designed as its exit radius and can set at power by this utility model Standby rotating speed becomes big when diminishing automatically, so that the lift of fan automatically becomes big when power-equipment rotating speed diminishes, namely this reality Can be increased, when power-equipment rotating speed diminishes, the air institute flowing through fan by the exit radius of increase flabellum 21 with novel The kinetic energy obtained, increases the air mass flow that unit interval internal fan is carried, improves radiating effect.

Visible, fan provided by the utility model, its air mass flow carried no longer is only dependent upon rotating speed size, and Being also relevant with the exit radius of flabellum 21, even if when power-equipment is with less rotary speed working, fan of the present utility model is still So can provide more sufficient air mass flow, it is ensured that radiating effect, meet radiating requirements.

Based on this, fan of the present utility model can be not only used for the power-equipments such as the motor to invariablenes turning speed and dissipates Heat, it is also possible to for the motor etc. of variable speed is dispelled the heat, and when the motor of variable speed is dispelled the heat, can Directly to be driven being connected with the motor of this variable speed, and turn without the most additionally arranging single motor driven fan Dynamic, so that include that the motor overall structure of the variable speed of this utility model fan is relatively simple, cost is relatively low, Power consumption is less, and small volume, lighter in weight, it is simple to install.

In this utility model, flabellum 21 can be centrifugal by doing relative to center of rotation when output shaft 5 rotation speed change Or centripetal motion changes the exit radius size of flabellum 21, so it is relatively easy to control, it is achieved more convenient, and structure comparison letter Single.Certainly, this is only to realize flabellum 21 exit radius to become a kind of embodiment of Negative correlation with power-equipment rotating speed, actual On, this utility model can also use other embodiments, such as can be by making shape or the size etc. of flabellum 21 along with defeated Shaft 5 rotation speed change and change to realize.

In order to enable flabellum 21 to do centrifugal or centripetal motion when output shaft 5 rotation speed change relative to center of rotation, In this utility model, flabellum assembly 2 can be slidably mounted in flabellum rotating shaft 1, and flabellum assembly 2 can also include counterweight Body 23, attachment structure 22 and elastic component, wherein: balance weight body 23 is connected with flabellum 21 by attachment structure 22, and balance weight body 23 and Flabellum 21 is positioned at the both sides of center of rotation, and when output shaft 5 rotation speed change, flabellum 21 can under the drive of balance weight body 23 relatively Centrifugal or centripetal motion is done in center of rotation；And the resilient force of elastic component is in flabellum 21, and, when output shaft 5 rotating speed is steady Regularly, elastic component can make flabellum assembly 2 be in stress balance state.

Based on this setting, when output shaft 5 stabilization of speed, fan component 2 can be at flabellum 21, balance weight body 23 and elastic component Effect under be in stress balance state, steady operation；And when output shaft 5 rotation speed change, the poised state quilt of flabellum assembly 2 Breaking, then flabellum assembly 2 can move relative to flabellum rotating shaft 1, and the centrifugal force suffered by balance weight body 23 is (hereinafter referred to as Balance weight body centrifugal force) more than the centrifugal force (hereinafter referred to as flabellum centrifugal force) suffered by flabellum 21, therefore, balance weight body 23 can carry Dynamic flabellum 21 does centrifugal or centripetal motion relative to center of rotation, wherein: when output shaft 5 rotating speed diminishes, flabellum 21 is in counterweight Centrifugal motion can be done relative to center of rotation under the effect of body 23, make the outlet of flabellum 21 away from center of rotation, increase flabellum The exit radius of 21, increases the air mass flow that fan is carried, it is ensured that the radiating effect of fan will not be deteriorated because rotating speed diminishes； And when output shaft 5 rotating speed becomes big, then flabellum 21 can do centripetal motion relative to center of rotation under the effect of balance weight body 23, Making the outlet of flabellum 21 near center of rotation, reduce the exit radius of flabellum 21, reduce air velocity, this is so that meeting While corresponding rotating speed radiating effect, reduce the wind moussing loss of power-equipment, be favorably improved the performance of power-equipment, extend dynamic The service life of power equipment.

In this utility model, in order to make flabellum assembly 2 can move relative to flabellum rotating shaft 1, can be in flabellum rotating shaft 1 The installation guide part that upper setting is corresponding with flabellum assembly 2, this installation guide part can make flabellum by coordinating with flabellum assembly 2 Assembly 2 is movably arranged in flabellum rotating shaft 1.And in order to ensure the smoothness that flabellum assembly 2 moves, flabellum assembly 2 with The roughness on surface that guide part coordinates is installed could be arranged to less than or equal to 3.2, and/or, install guide part and flabellum The roughness on the surface that assembly 2 coordinates could be arranged to less than or equal to 3.2, so can reduce flabellum assembly 2 and move time institute The resistance being subject to, the movement making flabellum assembly 2 is more smooth and easy.Herein, with guide part is installed coordinates and be used for making flabellum assembly 2 move , both can be flabellum 21, it is also possible to for attachment structure 22 or balance weight body 23.

Additionally, in order to prevent flabellum 21 from departing from fan blade rotating during do centripetal or centrifugal motion relative to center of rotation Axle 1, this installation guide part can also by coordinating the displacement limiting flabellum 21 with flabellum assembly 2 so that flabellum 21 relative to Without departing from flabellum rotating shaft 1 when center of rotation does centrifugal or centripetal motion, it is ensured that the normal work of fan.

Fig. 1 shows an embodiment of the present utility model.As it is shown in figure 1, in this embodiment, fan includes fan blade rotating Axle 1 and fan component 2.

Wherein, flabellum rotating shaft 1 is for output shaft 5 drive connection with power-equipment, and such flabellum rotating shaft 1 can be at power Being rotated by of equipment, and the rotating speed of flabellum rotating shaft 1 becomes positive correlation with the rotating speed of output shaft 5, i.e. the rotating speed of output shaft 5 is not Become, then the rotating speed of flabellum rotating shaft 1 is constant；The rotating speed of output shaft 5 diminishes, then the rotating speed of flabellum rotating shaft 1 also diminishes；Output shaft 5 Rotating speed becomes big, then the rotating speed of flabellum rotating shaft 1 also becomes big.

As shown in Figure 1, the flabellum rotating shaft 1 of this embodiment is hollow structure, and this not only makes the lighter weight of fan, and Also allow for the connection of the installation of flabellum assembly 2 and flabellum rotating shaft 1 and output shaft 5.

In this embodiment, flabellum rotating shaft 1 and output shaft 5 are by key drive connection.Understand in conjunction with Fig. 1 and Fig. 2, fan blade rotating First end of axle 1 is sheathed on output shaft 5, and the first end inwall of flabellum rotating shaft 1 is provided with the first keyway 14, correspondingly, defeated Shaft 5 is provided with the second keyway 51, and being arranged at the key in the first keyway 14 and the second keyway 51 i.e. can turning power-equipment Square is transferred in flabellum rotating shaft 1, makes flabellum rotating shaft 1 rotate along with output shaft 5.Certainly, this bond energy realizes flabellum rotating shaft 1 the most simultaneously Position with the radial direction of output shaft 5.

And, as in figure 2 it is shown, the first end in flabellum rotating shaft 1 is additionally provided with seam 13, this seam 13 and the end of output shaft 5 Face coordinates, it is achieved flabellum rotating shaft 1 positions with the axial of output shaft 5.

Additionally, as it is shown in figure 1, the second end of flabellum rotating shaft 1 is additionally provided with end cap 3, end cap 3 is for closing flabellum rotating shaft 1 Second end end face.Further, end cap 3 and output shaft 5 are correspondingly provided with centre bore, screw 4 via the two centre bore along flabellum Rotating shaft 1 axially across flabellum rotating shaft 1, and realize axially being connected of flabellum rotating shaft 1 and output shaft 5.It is understood that spiral shell Nail 4 also not exclusive is capable of the parts that flabellum rotating shaft 1 is axially connected with output shaft 5, and it can also be other axial connecting parts, As long as this axial connecting part can along flabellum rotating shaft 1 axially across flabellum rotating shaft 1 and realize flabellum rotating shaft 1 and output shaft 5 Axially connect.

Flabellum assembly 2 is installed in flabellum rotating shaft 1, and it can under the drive of flabellum rotating shaft 1 with flabellum rotating shaft 1 synchronously Rotate relative to center of rotation, and make air flowing form wind in rotation process, it is achieved heat radiation.In this embodiment, flabellum Assembly 2 is mounted radially displaceable in flabellum rotating shaft 1, and when output shaft 5 rotation speed change, and flabellum assembly 2 can be relative to Flabellum rotating shaft 1 produces the movement (hereinafter referred to as moving radially) of the radial direction along flabellum rotating shaft 1.

As it is shown in figure 1, the flabellum assembly 2 of this embodiment includes flabellum 21, attachment structure 22, balance weight body 23 and spring 24, Flabellum 21, balance weight body 23 and spring 24 may be contained within attachment structure 22.

Wherein, flabellum 21 is for making air flowing form wind in rotation process.Air is from import (the i.e. flabellum of flabellum 21 One end of the close flabellum rotating shaft 1 of 21) enter, and from the outlet (i.e. one end away from flabellum rotating shaft 1 of flabellum 21) of flabellum 21 Flowing out, air obtains energy in this process, has kinetic energy.Flabellum 21 shown in Fig. 1 be shaped as rectangle, and the axle of flabellum 21 Line is perpendicular to the axis of flabellum rotating shaft 1, but it is to be understood that, in order to meet the air mass flow that fan sets, the shape of flabellum 21 Shape and angle of inclination can carry out adaptive change.

Attachment structure 22 is used for connecting flabellum 21 and balance weight body 23.As shown in Figure 1, the attachment structure 22 of this embodiment includes The first connecting portion 221 and the second connecting portion 222 being connected to each other, the first connecting portion 221 is connected with flabellum 21, the second connecting portion 222 are connected with balance weight body 23, so make flabellum 21 can be linked together by this attachment structure 22 with balance weight body 23.

This attachment structure 22 is arranged in flabellum rotating shaft 1 radially displaceablely relative to flabellum rotating shaft 1, so that flabellum assembly 2 can be relative to flabellum rotating shaft 1 along moving radially, so that the outlet of flabellum 21 can be entered closer or far from center of rotation And can increase or reduce the exit radius of flabellum 21.As it is shown in figure 1, in this embodiment, the sidewall of flabellum rotating shaft 1 is provided with First installing port 11 and the second installing port 12, the two to arrange position symmetrical about center of rotation, i.e. the two lays respectively at flabellum The two ends of the same diameter of rotating shaft 1.Attachment structure 22 through this first installing port 11 and second installing port 12, and attachment structure 22 with This first installing port 11 and this equal matched in clearance of the second installing port 12.Specifically, as shown in Figure 1, the first of attachment structure 22 is even Meeting portion 221 and pass the first installing port 11, the second connecting portion 222 of attachment structure 22 then passes the second flabellum installing hole 12, and First connecting portion 221 and the first installing port 11 matched in clearance, the second connecting portion 222 also with the second installing port 12 matched in clearance.Base In this setting, attachment structure 22 can be relative to flabellum rotating shaft 1 along moving radially, so that be arranged in attachment structure 22 Flabellum 21, balance weight body 23 also be able to spring 24 together with along moving radially, namely make flabellum assembly 2 entirety can be relative In flabellum rotating shaft 1 along moving radially.

Visible, in this embodiment, the first installing port 11 and the second installing port 12 are used as to install guide part, the two by with Attachment structure 22 cooperation realizes flabellum assembly 2 and is connected with the radially displaceable of flabellum rotating shaft 1.In order to ensure that flabellum assembly 2 moves The smoothness of process, in this embodiment, the surface and second that the first connecting portion 221 cooperates with the first installing port 11 is even Connect the roughness on the surface that portion 222 cooperates with the second installing port 12 to be disposed as, less than or equal to 3.2, so can more having Reduction attachment structure 22 in effect ground, along resistance suffered when moving radially, makes moving radially of flabellum assembly 2 more smooth and easy.

And, as shown in Figure 1, this embodiment is each passed through first by making the first connecting portion 221 and the second connecting portion 222 Installing port 11 and the second installing port 12, also make the flabellum 21 being connected on the first connecting portion 221 and be connected to the second connecting portion Balance weight body 23 on 222 is respectively positioned on the outside of flabellum rotating shaft 1, and is in the both sides of center of rotation.

During in order to make output shaft 5 rotation speed change, flabellum assembly 2 can produce relative to flabellum rotating shaft 1 and move radially, at this In embodiment, being positioned at the balance weight body 23 of center of rotation opposite side relative to flabellum 21, its centrifugal force is more than the centrifugal force of flabellum 21. Owing to balance weight body 23 and flabellum 21 are positioned at the both sides of center of rotation, therefore, balance weight body centrifugal force is total with the direction of flabellum centrifugal force Being contrary, again owing to balance weight body centrifugal force is more than flabellum centrifugal force, therefore, when rotation speed change, flabellum assembly 2 is relative to fan The moving direction of leaf rotating shaft 1 is always identical with the direction of balance weight body centrifugal force, and in opposite direction with flabellum centrifugal force, thus work as When rotating speed becomes big, flabellum 21 can do centripetal motion relative to center of rotation under the drive of balance weight body 23, reduces outlet half Footpath, reduces air velocity, reduces wind moussing loss；And when rotating speed diminishes, flabellum 21 then under the drive of balance weight body 23 relative to Center of rotation does centrifugal motion, increases exit radius, increases air mass flow, it is ensured that radiating effect.Visible, the counterweight of this embodiment Body 23 for driving flabellum 21 to do centrifugal or centripetal motion relative to center of rotation when output shaft 5 rotation speed change, and then realizes Increase or reduce the purpose of exit radius.

Owing to balance weight body centrifugal force differs in size with flabellum centrifugal force, in opposite direction, therefore, only at the flabellum of balance weight body 23 Under the effect of 21, the whole flabellum assembly 2 of this embodiment cannot reach stress balance state after stabilization of speed again.And this is real Execute example and can efficiently solve this problem by arranging spring 24.

In this embodiment, spring 24 is used as a kind of elastic component, and it makes flabellum assembly 2 reach in rotation process for applying Elastic force to stress balance state.Owing to balance weight body centrifugal force is more than flabellum centrifugal force, therefore, the elasticity that spring 24 is applied Power, its direction is consistent with the direction of flabellum centrifugal force, and its size is equal to the difference of balance weight body centrifugal force with flabellum 2 centrifugal force.

Specifically, as it is shown in figure 1, in this embodiment, spring 24 is sheathed in attachment structure 22, and is compressed in connection Between structure 22 and the inwall being provided with the second installing port 12 of flabellum rotating shaft 1.Based on this setting, the elastic force of spring 24 and flabellum Centrifugal force direction is consistent, and elastic force be sized to that to do centripetal motion time-varying at flabellum 21 relative to center of rotation big, and Flabellum 21 diminishes when doing centrifugal motion relative to center of rotation, so that again reach steady at output shaft 5 rotating speed through change After Ding, the centrifugal force of flabellum 21 always can be again equal with the centrifugal force of balance weight body 21 with the elastic force sum of spring 24, enters And make flabellum assembly 2 can again reach poised state, it is ensured that fan steady operation.

Fig. 3 a and Fig. 3 b more intuitively shows the operation principle of this embodiment fan.In fig. 3 a, fan is with rotating speed n₁ Rotate, and in fig 3b, fan is with rotating speed n₂Rotate, wherein, n₁＜ n₂, namely be that output shaft 5 rotating speed becomes big by Fig. 3 a to Fig. 3 b Process, Fig. 3 a to Fig. 3 b the process then diminished for output shaft 5 rotating speed.Owing to, compared with flabellum 21 and balance weight body 23, connecting The quality of access node structure 22 is negligible, and therefore, in order to simplify calculating process, the quality of attachment structure 22 is ignored not below Meter.And in order to simplify description, defining following parameter: the radical length of flabellum assembly 2 entirety is L, the quality of flabellum 21 is m, joins The quality of weight body 23 is M, and the coefficient of elasticity of spring 24 is k, and spring 24 decrement in fig. 3 a is Δ x₁, spring 24 is at figure Decrement in 3b is Δ x₂。

Shown in Fig. 3 a, when fan is with rotating speed n₁During rotation, the exit radius of flabellum 21 is R₁, therefore, the center of gravity of flabellum 21 Radius is R_1/2, the radius of gravity center of balance weight body 23 is approximately L-R₁.In this utility model, radius of gravity center refers to that center of gravity is to rotating The distance at center.Owing to now flabellum assembly 2 is in stress balance state, therefore, the centrifugal force of balance weight body 23, flabellum 21 from The elastic force of mental and physical efforts and spring 24 has a following relation:

$(L-R_1)\·{\left(\frac{2{\mathrm{\πn}}_1}{60}\right)}^2\·M=k\·{\mathrm{\Δx}}_1+\frac{R_1}{2}\·{\left(\frac{2{\mathrm{\πn}}_1}{60}\right)}^2\·m$

Understand in conjunction with Fig. 3 a and Fig. 3 b, when the rotating speed of fan is by n₁Increase to n₂Time, the centrifugal force of balance weight body 23 will increase, Balance weight body 23 moves away from the direction of center of rotation relative to flabellum rotating shaft 1, then drives flabellum 21 relative to fan blade rotating Axle 1 moves towards the direction near center of rotation, namely drives flabellum 21 to do centripetal motion relative to center of rotation, makes flabellum 21 Exit radius by R₁It is reduced to R₂, make spring 24 be further compressed simultaneously, the deflection of spring 24 is by Δ x₁It is increased to Δ x₂, now, under the effect of the centrifugal force of centrifugal force, the elastic force of spring 24 and the balance weight body 23 of flabellum 21, flabellum assembly 2 Again reaching stress balance state, fan is with rotating speed n₂Stably rotate.

Similarly, when the rotating speed of fan is by n₂It is decreased to n₁Time, flabellum 21 can do centrifugal motion relative to center of rotation, make The exit radius of flabellum 21 is by R₂It is increased to R₁Even if thus making when low cruise, the fan of this embodiment remains able to Enough air are provided to dispel the heat, it is achieved preferably radiating effect.

As it was previously stated, the first installing port 11 of this embodiment and the second installing port 12 are used as to install guide part, the two and company Access node structure 22 cooperation realizes flabellum assembly 2 and is connected with the radially displaceable of flabellum rotating shaft 1.And further, in this embodiment, First installing port 11 and the second installing port 12 also coordinate the limit realized flabellum assembly 2 radial displacement with flabellum 21 and balance weight body 23 System, to prevent flabellum assembly 2 from departing from flabellum rotating shaft 1 during rotation speed change.

Specifically, as it is shown in figure 1, the face size near the first installing port 11 of flabellum 21 is more than the first installing port 11 Face size, based on this, owing to being provided with first when flabellum 21 near what the end face of the first installing port 11 was resisted against flabellum rotating shaft 1 Time on the outer wall of installing port 11, flabellum 21 cannot be further continued near center of rotation, therefore, this arrange can limit flabellum 21 to Heart displacement, to prevent when flabellum 21 does centripetal motion relative to center of rotation, flabellum assembly 2 departs from flabellum rotating shaft.And, The face size near the second installing port 12 of balance weight body 23 is more than the face size of the second installing port 12, based on this, owing to working as When the end face near the second installing port 12 of balance weight body 23 is resisted against on the outer wall being provided with the second installing port 12 of flabellum rotating shaft 1, Flabellum 21 cannot be further away from center of rotation, and therefore, this arranges the centrifugal displacement that can limit flabellum 21, to prevent in flabellum 21 phase When doing centrifugal motion for center of rotation, flabellum assembly 2 departs from flabellum rotating shaft.Certainly, flabellum assembly to be prevented 2 is in rotation speed change During depart from flabellum rotating shaft 1, it is also possible to adopt in other ways, such as can be by arranging stopper section in attachment structure 22 Etc. realizing.

Generally, fan arranges a flabellum incessantly, but at least two flabellum is set, and, make an uproar to realize reduction The purpose such as sound and vibration, fan generally arranges odd number flabellum.As it is shown in figure 1, in this embodiment, fan i.e. includes three Flabellum assembly 2, these three flabellum assembly 2 is installed in flabellum rotating shaft 1 non-interferencely, to ensure the functional reliability of fan. Correspondingly, flabellum rotating shaft 1 is provided with three group of first installing port 11 and the second installing port 12, namely is provided with three guiding installation portions, Wherein, each guiding installation portion is correspondingly arranged with each flabellum assembly 2.

In order to make three flabellum assemblies 2 non-interference, as it is shown in figure 1, in this embodiment, the company of each flabellum assembly 2 Access node structure 22 the most also includes the relief portion 223 being connected between the first connecting portion 221 and the second connecting portion 222, this relief portion 223 Make correspondence attachment structure 22 have allow other attachment structures 22 extend there through dodge space, and any two relief portion Along flabellum rotating shaft 1, axially there is interval between 223.The setting of this relief portion 223, be both easy to three flabellum assemblies 2 along Flabellum rotating shaft 1 circumferentially distributed on the same cross section of flabellum rotating shaft 1, forms air flow channel between any two；It is easy to again each Flabellum assembly 2 is respectively relative to flabellum rotating shaft 1 along moving radially, so that the exit radius of each flabellum 21 all can be along with turning Speed change forms Negative correlation, the problem that when more effectively solution rotating speed is relatively low, fan cooling effect is poor；It it is also each fan Leaf assembly 2 leaves certain space on the axis direction of flabellum rotating shaft 1 so that each flabellum assembly 2 is not done in the axial direction mutually Relate to.Visible, three flabellum assemblies 2 of this embodiment in the course of the work can be non-interference, can improve fan work process Smoothness and reliability.

Specifically, as shown in Figure 1, in this embodiment, each relief portion 223 all includes First Transition portion 2231, second Transition part 2232 and middle interconnecting piece 2233, wherein: First Transition portion 2231 is axially arranged along flabellum rotating shaft 1, and this One transition part 2231 is connected with the first connecting portion 221；Axially arranged along flabellum rotating shaft 1 of second transition part 2232, and this Two transition parts 2232 are connected with the second connecting portion 222；Middle interconnecting piece 2233 then being radially arranged along flabellum rotating shaft 1, and should Middle interconnecting piece 2233 is connected between First Transition portion 2231 and the second transition part 2232 be formed dodges space.As it is shown in figure 1, Each relief portion 223 entirety is the most substantially in Qian font, and the hollow bulb of Qian is i.e. formed as dodging space, is installing each flabellum assembly When 2, the attachment structure 22 of each flabellum assembly 2 all can be dodged space from this of other attachment structures 22 and pass.And, if Three flabellum assemblies 2 from left to right in Fig. 1 are called the first flabellum assembly, the second flabellum assembly and the 3rd flabellum group Part, then as it is shown in figure 1, the middle interconnecting piece 2233 of the first flabellum assembly is connected to First Transition portion 2231 and second mistake of correspondence Crossing the left end in portion 2232, the middle interconnecting piece 2233 of the second flabellum assembly is connected to First Transition portion 2231 and second mistake of correspondence Crossing the middle part in portion 2232, the middle interconnecting piece 2233 of the 3rd flabellum assembly is then connected to the First Transition portion 2231 and second of correspondence The right-hand member of transition part 2232, thus makes between the middle interconnecting piece 2233 of any two relief portion 223 along flabellum rotating shaft 1 Axially there is interval, thus ensure that each flabellum assembly 2 is the most non-interference.

Additionally, as it is shown in figure 1, in this embodiment, each middle interconnecting piece 2233 is shaped form bar, more specifically Bow, and each middle interconnecting piece 2233 is away from the different directions protrusion of center of rotation, so arranges and is advantageous in that, Each flabellum assembly 2 can be avoided to interfere with the aforementioned screw 4 as axial connecting part.Such as, in FIG, the first fan The curve of the middle interconnecting piece 2233 of leaf assembly protrudes, in the second flabellum assembly towards the front of Fig. 1 relative to center of rotation Between the curve of connecting portion 2233 relative to center of rotation projecting above towards Fig. 1, and the middle interconnecting piece of the 3rd flabellum assembly The curve of 2233 then protrudes towards the rear of Fig. 1 relative to center of rotation.So arrange and be advantageous in that so that connect in the middle of each Meet portion 2233 and there is also distance diametrically, form radial space, so that each flabellum assembly 2 will not be to aforementioned as axle To connector screw 4 formed stop, and then be easy to screw 4 along flabellum rotating shaft 1 axially across flabellum rotating shaft 1.Certainly, figure Shown in 1 is only a kind of mode realizing this purpose, it practice, middle interconnecting piece 2233 is not limited in away from rotating The structure of the shaped form bar that the direction of the heart is protruded, such as, it can also be the fold-line-shaped protruded to the direction away from center of rotation Bar, if each middle interconnecting piece 2233 be configured such that axial connecting part can along flabellum rotating shaft 1 axially across fan Leaf rotating shaft 1.

Fig. 4 shows another embodiment of the present utility model.As shown in Figure 4, this embodiment and the knot of embodiment illustrated in fig. 1 Structure is essentially identical, and difference essentially consists in, and the middle interconnecting piece 2233 of this embodiment is no longer shaped form bar, but straight-bar, this Structure is advantageous in that structure is relatively simple, processes more convenient.This embodiment is particularly suited for flabellum rotating shaft 1 and output shaft 5 The fan axially connected is not realized by axial connecting part.Certainly, aforementioned for shaped form bar or the middle interconnecting piece of fold-line-shaped bar 2233 can also be applied to the fan that flabellum rotating shaft 1 does not realizes by axial connecting part being axially connected with output shaft 5.

In two shown in Fig. 1 and Fig. 4 embodiment, it is all to include in case of 3 flabellum assemblies 2 by fan, but It will be apparent to those skilled in the art that this utility model is equally applicable to fan and includes the flabellum assembly of 1,2 or more than 3 The situation of 2, owing to principle is similar, the description being referred to above-mentioned two embodiment understands, therefore, here is omitted.

Furthermore, it is necessary to explanation is, although in Fig. 1 and Fig. 4, spring 24 is all helical spring, and is all compressed in second Between transition part 2232 and the inwall being provided with the second installing port 12 of flabellum rotating shaft 1, but the set-up mode of spring 24 does not limit to In this, such as, spring 24 can also be the other kinds of springs such as torsionspring, rubber spring, air spring, more such as, bullet Spring 24 can also by arrange in attachment structure 22 single baffle plate, be provided with in attachment structure 22 position, hole or gluing etc. its He is arranged mode, as long as the elastic force of spring 24 can act on flabellum 21, and flabellum assembly 2 can be made again to reach stress Poised state.And, although in Fig. 1 and Fig. 4, the first installing port 11 is in Long Circle, and the second installing port 12 is rounded, but The bar that this is with the first connecting portion 221 is rectangular shape bar and the second connecting portion 222 are cylindrical adapts, and it is not Constitute restriction of the present utility model.It addition, balance weight body 23 of the present utility model can be used but not limited to use ferrum, copper and lead Make Deng material.

To sum up, fan provided by the utility model, the exit radius of its flabellum 21 can become along with power-equipment rotating speed Negative correlation, this makes the rotating speed of no matter power-equipment bigger or less, fan of the present utility model all can efficiently and Dispel the heat to low consumption.The most especially when power-equipment rotating speed diminishes, the exit radius of flabellum can be automatically increased so that i.e. Making when power-equipment is with less rotary speed working, fan of the present utility model remains able to provide more sufficient air mass flow, protects Card radiating effect, meets radiating requirements, such that it is able to effectively solve existing flabellum be fixed on the fan in flabellum rotating shaft cannot be The problem realizing effectively heat radiation when rotating speed diminishes.And fan structure of the present utility model is relatively simple, it is easy to accomplish.

Fan of the present utility model, can be not only used for the power-equipments such as the motor to invariablenes turning speed and dispels the heat, also May be used for the motor etc. of variable speed is dispelled the heat, and either the power-equipment of invariablenes turning speed is dispelled the heat, also Being that the power-equipment to variable speed dispels the heat, fan of the present utility model all can directly drive even with power-equipment to be dispelled the heat Connect.The most especially when the motor of variable speed is dispelled the heat, owing to can directly motor with variable speed carry out Drive connection, and rotate without the most additionally arranging single motor driven fan, therefore can simplify variable speed motor Overall structure, reduce variable speed motor difficulty of processing, reduce variable speed motor energy loss, Ke Yiyou Effect saves the holistic cost of variable speed motor, improves the work efficiency of variable speed motor, and owing to volume is less, weight Amount is lighter, the installation of variable speed motor of being the most also more convenient for.

So, this utility model additionally provides a kind of power-equipment.This power-equipment includes output shaft 5 and this utility model Fan.Wherein, the flabellum rotating shaft 1 of fan and output shaft 5 drive connection.This power-equipment can be the electronic of invariablenes turning speed Machine, it is also possible to for the motor of variable speed, it is, of course, also possible to be other power-equipments in addition to motor.

The foregoing is only exemplary embodiment of the present utility model, not in order to limit this utility model, all in this reality Within novel spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in of the present utility model Within protection domain.

Claims (15)

1. a fan, it is characterised in that include flabellum rotating shaft (1) and the flabellum assembly being installed on described flabellum rotating shaft (1) (2), described flabellum rotating shaft (1) is used for the output shaft of power-equipment (5) drive connection so that described flabellum rotating shaft (1) can carry Dynamic described flabellum assembly (2) rotates around center of rotation；Described flabellum assembly (2) includes flabellum (21), described flabellum (21) Exit radius can change along with the change of described output shaft (5) rotating speed, and the exit radius of described flabellum (21) is with described The outlet that the rotating speed of output shaft (5) becomes negative correlation, the exit radius of described flabellum (21) to be described flabellum (21) and described rotation Distance between center.

Fan the most according to claim 1, it is characterised in that described flabellum (21) is by described output shaft (5) rotating speed Centrifugal or centripetal motion is made to change the size of described flabellum (21) exit radius relative to described center of rotation during change.

Fan the most according to claim 2, it is characterised in that described flabellum assembly (2) is slidably mounted on described fan In leaf rotating shaft (1)；Described flabellum assembly (2) also includes balance weight body (23), attachment structure (22) and elastic component, described balance weight body (23) it is connected with described flabellum (21) by described attachment structure (22), and described balance weight body (23) is positioned at described flabellum (21) The both sides of described center of rotation, when described output shaft (5) rotation speed change, described flabellum (21) can be in described balance weight body (23) Drive under do centrifugal or centripetal motion relative to described center of rotation；The resilient force of described elastic component is in described flabellum (21), and, when described output shaft (5) stabilization of speed, it is flat that described elastic component can make described flabellum assembly (2) be in stress Weighing apparatus state.

Fan the most according to claim 3, it is characterised in that described flabellum rotating shaft (1) is provided with and described flabellum assembly (2) corresponding installation guide part, described installation guide part coordinates with described flabellum assembly (2) makes described flabellum assembly (2) to move It is arranged on described flabellum rotating shaft (1) dynamicly.

Fan the most according to claim 4, it is characterised in that joining with described installation guide part of described flabellum assembly (2) The roughness on the surface closed less than or equal to 3.2, and/or, the table coordinated with described flabellum assembly (2) of described installation guide part The roughness in face is less than or equal to 3.2.

Fan the most according to claim 4, it is characterised in that described installation guide part includes arranging position about described turn Dynamic centrosymmetric first installing port (11) and the second installing port (12), described flabellum assembly (2) passes described first installing port (11) and the second installing port (12) and matched in clearance equal with described first installing port (11) and described second installing port (12), so that Described flabellum assembly (2) can be relative to described flabellum rotating shaft (1) moving radially along described flabellum rotating shaft (1).

Fan the most according to claim 6, it is characterised in that described installation guide part can also by with described flabellum group Part (2) cooperation prevents described flabellum (21) from departing from institute during do centripetal or centrifugal motion relative to described center of rotation State flabellum rotating shaft (1).

Fan the most according to claim 7, it is characterised in that described attachment structure (22) includes with described flabellum (21) even The first connecting portion (221) connect and the second connecting portion (222) being connected with described balance weight body (23), described first connecting portion (221) described second installing port (12) is passed through described first installing port (11) and described second connecting portion (222), so that institute State flabellum (21) and described balance weight body (23) is respectively positioned on the outside of described flabellum rotating shaft (1)；Described flabellum (21) close described The face size of the first installing port (11) is more than the face size of described first installing port (11)；Described balance weight body (23) close The face size of described second installing port (12) is more than the face size of described second installing port (12).

9. according to the arbitrary described fan of claim 1-8, it is characterised in that described fan includes flabellum group described at least two Part (2), described at least two flabellum assembly (2) is installed on described flabellum rotating shaft (1) non-interferencely.

10. according to the arbitrary described fan of claim 3-8, it is characterised in that described fan includes flabellum described at least two Assembly (2), described at least two flabellum assembly (2) is installed on described flabellum rotating shaft (1) non-interferencely；Wherein, Mei Gesuo The attachment structure (22) stating flabellum assembly (2) all includes that the first connecting portion (221) being connected with described flabellum (21) is joined with described Weight body (23) the second connecting portion (222) of connecting and be connected to described first connecting portion (221) and described second connecting portion (222) Between relief portion (223), described relief portion (223) make correspondence described attachment structure (22) have permission other described companies What access node structure (22) extended there through dodges between space, and relief portion described in any two (223) along described flabellum rotating shaft (1) Axially there is interval, so that described at least two flabellum assembly (2) is non-interference.

11. fans according to claim 10, it is characterised in that each described relief portion (223) includes First Transition portion (2231), the second transition part (2232) and middle interconnecting piece (2233), described First Transition portion (2231) is along described fan blade rotating Axially arranged and the described First Transition portion (2231) of axle (1) is connected with described first connecting portion (221), described second transition part (2232) along the axially arranged of described flabellum rotating shaft (1) and described second transition part (2232) and described second connecting portion (222) connecting, described middle interconnecting piece (2233) is radially arranged and described middle interconnecting piece along described flabellum rotating shaft (1) (2233) it is connected between described First Transition portion (2231) and described second transition part (2232) described in formation dodge space；Appoint Anticipate between the middle interconnecting piece (2233) of two described relief portion (223), along described flabellum rotating shaft (1), axially there is interval.

12. fans according to claim 11, it is characterised in that described middle interconnecting piece is straight-bar, shaped form bar or folding Linear bar.

13. fans according to claim 11, it is characterised in that be additionally provided with axial connecting part on described flabellum rotating shaft (1), Described axial connecting part for along described flabellum rotating shaft (1) axially across described flabellum rotating shaft (1) and realize described flabellum Being axially connected between rotating shaft (1) with described output shaft (5)；Each described middle interconnecting piece (2233) is also configured such that institute State axial connecting part can along described flabellum rotating shaft (1) axially across described flabellum rotating shaft (1).

14. fans according to claim 13, it is characterised in that each described middle interconnecting piece (2233) is shaped form Bar or fold-line-shaped bar, and each described middle interconnecting piece (2233) is away from the different directions protrusion of described center of rotation.

15. 1 kinds of power-equipments, including output shaft (5), it is characterised in that described power-equipment also includes such as claim 1-14 Arbitrary described fan.