CN207073482U - A kind of fan - Google Patents

Abstract

The utility model discloses a kind of fan, the fan includes the first flabellum and the second flabellum being oppositely arranged, outlet air surface of first flabellum adjacent to the fan, second flabellum deviates from the outlet air surface, the torsional direction of first flabellum and second flabellum is opposite, drive division is provided between first flabellum and second flabellum, first flabellum is rotated with first direction in the presence of the drive division during air-out, second flabellum is rotated with the second direction opposite with first direction, and the velocity of rotation of first flabellum is identical with the velocity of rotation of second flabellum.The utility model can cause air quantity to improve to nearly twice on the premise of equal rotating speed and flabellum radius；In addition, it is zero to rock torque sum caused by flabellum when rotating, reduce the swing dither effect of fan, it is easier to ensure whole dynamic balance.

Description

A kind of fan

Technical field

The utility model relates generally to household appliance technical field, more particularly to a kind of fan.

Background technology

In the prior art, fan uses the structure type of a motor driven individual layer rotating blading.The fan one of the structure Aspect air quantity is not big enough, if lifting air quantity wind speed with high-revolving mode is put forward, it will produces the problem of noise is excessive, changes in addition The planform in fan blade and air channel can increase air quantity wind speed, but improve limitation.

On the other hand, because of each part all directions discontinuity equalization when the fan work of aforementioned structure rotates, easily produce Vibration, and when motor and fan frequency resonate with complete machine mechanical oscillation frequencies, more obvious vibration problem can be produced, And it is difficult to solve.

Utility model content

Main purpose of the present utility model is to provide a kind of fan, it is intended to solves that air quantity in the prior art is small and easy production The problem of raw vibration.

To achieve the above object, the utility model proposes fan, including the first flabellum and the second flabellum being oppositely arranged, For first flabellum adjacent to the outlet air surface of the fan, second flabellum deviates from the outlet air surface, first flabellum and institute The torsional direction of the second flabellum is stated on the contrary, being provided with drive division between first flabellum and second flabellum, during air-out First flabellum is rotated with first direction in the presence of the drive division, and second flabellum is with opposite with first direction Second direction rotates, and the velocity of rotation of first flabellum is identical with the velocity of rotation of second flabellum.

Preferably, the spacing between first flabellum and second flabellum for the first flabellum radius 0.05~ 0.5 times.

Preferably, the radius of first flabellum and second flabellum is equal.

Preferably, the axis of the axis of first flabellum and second flabellum is overlapped and is horizontally disposed with.

Preferably, the drive division includes the first motor, gear shaft and the first hammer gear and the second cone being oppositely arranged Gear, the casing of first motor are fixed on the first housing, the output end tooth connection wheel shaft of first motor, the tooth Wheel shaft engages with the first bevel gear and the second bevel gear, and the first bevel gear connects first flabellum, described Second bevel gear connects second flabellum.

Preferably, the first flabellum axle is fixed with the first bevel gear, first flabellum is sleeved on first fan On rachis；The second flabellum axle is fixed with the second bevel gear, second flabellum is sleeved in second flabellum axle.

Preferably, the fan also includes the first spiral cover and the second spiral cover, first spiral cover and first flabellum axle Free end threaded connection, second spiral cover is threadedly coupled with the free end of second flabellum axle.

Preferably, the fan also includes net hoop, and first flabellum and second flabellum are contained in the net hoop Into space in.

Preferably, the fan also includes the second motor being fixed on the second housing, the output end of second motor On be fixed with the first panning gear, second engaged with first panning gear is fixed with first housing and is shaken the head tooth Wheel.

Preferably, the fan also includes column, sleeve and base, and the column is fixedly connected with second housing, The sleeve is fixedly connected with the base, and the column is telescopically arranged in the sleeve.

In the technical solution of the utility model, the fan includes the first flabellum and the second flabellum being oppositely arranged, the first fan The torsional direction of leaf and the second flabellum on the contrary, the first flabellum is rotated with first direction during air-out, the second flabellum with first direction Opposite second direction rotates, and the velocity of rotation of the first flabellum is identical with the velocity of rotation of the second flabellum so that fan can court To outlet air surface air-out, and on the premise of equal rotating speed and flabellum radius, air quantity can be improved to nearly twice；In addition, by In the rotation direction of the first flabellum and the second flabellum on the contrary, and torsional direction on the contrary, the thus caused torsion when it is rotated It is zero to put torque sum, reduces the swing dither effect of fan, it is easier to ensure fan whole dynamic balance.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the structure principle chart of the fan of the utility model embodiment；

Fig. 2 is the structure principle chart of the fan head part of embodiment illustrated in fig. 1.

Drawing reference numeral explanation：

Label	Title	Label	Title
				11	First flabellum	12	Second flabellum
2	Drive division	21	First motor
				22	Second motor	23	Gear shaft
31	First flabellum axle	32	Second flabellum axle
				41	First spiral cover	42	Second spiral cover
5	Net hoop	61	First housing
				62	Second housing	71	Column
72	Sleeve	73	Base

Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, belong to the scope of the utility model protection.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., such as When the fruit particular pose changes, then directionality instruction also correspondingly changes therewith.

In addition, and it can not be managed in the utility model such as relating to the description of " first ", " second " etc. is only used for describing purpose Solve to indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".It is " more in description of the present utility model It is individual " it is meant that at least two, such as two, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used Be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals Or the interaction relationship of two elements, limited unless otherwise clear and definite.For the ordinary skill in the art, can be with Concrete meaning of the above-mentioned term in the utility model is understood as the case may be.

In addition, the technical scheme between each embodiment of the utility model can be combined with each other, but must be with ability Domain those of ordinary skill can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of this technical scheme is not present, also not within the protection domain of the requires of the utility model.

The utility model proposes a kind of fan.

Refer to Fig. 1 and Fig. 2, the fan that the utility model embodiment provides, including the He of the first flabellum 11 being oppositely arranged Second flabellum 12, for the first flabellum 11 adjacent to the outlet air surface of fan, the second flabellum 12 deviates from the outlet air surface, the first flabellum 11 and second The torsional direction of flabellum 12 is opposite.In the orientation shown in Fig. 1 and Fig. 2, left side is the side of outlet air surface, and the first flabellum 11 is located at Left side, the second flabellum 12 are located at right side.

The torsional direction of first flabellum 11 and the second flabellum 12 is opposite so that the first flabellum 11 and the second flabellum 12 during rotation Caused air-flow only has an outlet air surface, gone out in one direction towards outlet air surface, the i.e. fan of the utility model embodiment Wind.Be provided with drive division 2 between the first flabellum 11 and the second flabellum 12, during air-out in the presence of drive division 2 first flabellum 11 are rotated with first direction, and the second flabellum 12 is rotated with the second direction opposite with first direction, and the rotation of the first flabellum 11 Speed is identical with the velocity of rotation of the second flabellum 12.

According to the difference of the construction of the first flabellum 11 and torsional direction, first direction can be clockwise direction, can also For counterclockwise.When being clockwise direction in a first direction, then second direction is counterclockwise；If on the contrary, first Direction is counterclockwise, then second direction is clockwise.

First flabellum 11 can use polytype flabellum of the prior art, and can have a variety of possible radiuses and torsion Turn thickness.The size of second flabellum 12 and the first flabellum 11 can be with identical, i.e. the radius phase of the second flabellum 12 and the first flabellum 11 It is good Deng the overall balance of, fan.

In addition, it also may be such that the radius of the first flabellum 11 is slightly less than the radius of the second flabellum 12.Because the first flabellum 11 is adjacent Nearly outlet air surface, the second flabellum 12 deviate from outlet air surface, also can be to a certain extent in the case where the radius of the first flabellum 11 is smaller It is easy to air flow direction outlet air surface caused by the second flabellum 12.It is understood that in order to ensure the overall dynamic balancing of fan, first Radius difference between the flabellum 12 of flabellum 11 and second can not be too big.

Further, it is preferable to spacing between the first flabellum 11 and the second flabellum 12 for the radius of the first flabellum 11 0.05~ 0.5 times, the spacing refers to the distance of the line between the central point of the first flabellum 11 and the central point of the second flabellum 12.The spacing It can guarantee that the compact-sized of fan, when the space-consuming of the utility model embodiment fan and unobvious increase, turning on an equal basis On the premise of speed and flabellum radius, air quantity can be improved to nearly twice.

In addition, the axis of the axis of the first flabellum 11 and the second flabellum 12 overlaps and horizontally disposed, the first flabellum 11 and the Two flabellums 12 are vertically arranged and perpendicular to horizontal plane, and the first flabellum 11 and the second flabellum 12 are located at sustained height, overall outer Shape is attractive in appearance compact, and when the first flabellum 11 and the second flabellum 12 rotate, caused torque sum of rocking is zero, is reduced The swing dither effect of fan, it is easier to ensure fan whole dynamic balance.It should be understood that the first flabellum 11 and the second flabellum There is certain inclination angle between 12 and horizontal plane, can also realize technique effect of the present utility model.

Drive division 2 is arranged between the first flabellum 11 and the second flabellum 12, for driving the first flabellum 11 with first direction Rotate, and drive the second flabellum 12 to be rotated simultaneously with second direction, and the rotation of the first flabellum 11 and the second flabellum 12 need to be ensured Speed is identical.The drive division 2 can be that bi-motor drives the first flabellum 11 and the second flabellum 12 respectively.It is preferred that it includes the first motor 21st, gear shaft 23 and the first hammer gear and second bevel gear (not indicating), the casing of the first motor 21 that are oppositely arranged are fixed In on the first housing 61, the output end tooth connection wheel shaft 23 of the first motor 21, gear shaft 23 bores tooth with first bevel gear and second Wheel engagement, first bevel gear connect the first flabellum 11, and second bevel gear connects the second flabellum 12.

The output end of first motor 21 is set upward, when the output end of the first motor 21 rotates, the tooth on gear shaft 23 Wheel drives first bevel gear and second bevel gear constant velocity rotation in different directions simultaneously.In the orientation shown in Fig. 1 and Fig. 2, the One hammer gear is towards right side, and second bevel gear is towards left side.Gear shaft 23, first bevel gear and second bevel gear can position union Into in gear-box.In addition, the motor 21 of gear shaft 23 and first is contained in the inside of the first housing 61, to be protected to it and Decoration.First motor 21 is preferably DC permanent magnetism synchronous machine or DC brushless motor, it is possible to use alternating current asynchronous monophase machine Or alternating current asynchronous three phase electric machine, or other types motor.

Because the rotating speed of first bevel gear and second bevel gear determines by the rotating speed of same gear shaft 23, therefore first The synchronism of bevel gear and second bevel gear is high, when user needs to adjust gear, can accurately adjust so that the He of the first flabellum 11 The rotating speed of second flabellum 12 is consistent, thus can be always ensured that caused torque sum of rocking is zero during rotation, reduces fan Swing dither effect, it is easier to ensure fan whole dynamic balance.Especially for the startup balance quality of fan and shutdown Steady reliability is braked, is significantly better than that the fan of prior art.

Each flabellum can use a variety of possible connected modes with each hammer gear, as long as the synchronization action between can guarantee that them .Preferably, the first flabellum axle 31 is fixed with first bevel gear, the first flabellum 11 is sleeved in the first flabellum axle 31；The The second flabellum axle 32 is fixed with two bevel gears, the second flabellum 12 is sleeved in the second flabellum axle 32.It should be noted that each fan The propeller boss shape that leaf is sleeved in flabellum axle can also have an impact with dimensional parameters to blowing performance.

In order to carry out fastening positioning to the first flabellum 11 and the second flabellum 12, the fan of the embodiment also includes the first spiral cover 41 and second spiral cover 42, the first spiral cover 41 be threadedly coupled with the free end of the first flabellum axle 31, the second spiral cover 42 and the second flabellum The free end threaded connection of axle 32.Specifically, the free end of the first flabellum axle 31 and the second flabellum axle 32 is provided with external screw thread, Internal thread is provided with the first spiral cover 41 and the second spiral cover 42.42 first flabellum easy to disassemble of first spiral cover 41 and the second spiral cover 11 and second flabellum 12, to facilitate user to clean it.

In addition, the fan of the embodiment can also include net hoop 5, the first flabellum 11 and the second flabellum 12 are contained in net hoop 5 In the space of formation.The net hoop 5 houses the first flabellum 11 and the second flabellum 12, user can be avoided to touch fan in fan work Leaf is to come to harm.Net hoop 5 can use metal or plastic wire hoop.

Further, in order to which the space of different azimuth is blowed, the left and right oscillating function of fan is realized, the fan is also Including the second motor 22 being fixed on the second housing 62, the first panning gear is fixed with the output end of the second motor 22, the The the second panning gear (not shown) engaged with the first panning gear is fixed with one housing 61.The output end of second motor 22 Above-below direction also is located at, by the engagement in rotation of the first panning gear and the second panning gear, the first housing 61 can be driven relative Rotated in fixed second housing 62, and then realize that left and right is shaken the head.Similarly, second motor 22 is preferably AC permanent magnet Synchronous motor or DC brushless motor, it is possible to use alternating current asynchronous monophase machine or alternating current asynchronous three phase electric machine, or other classes Type motor.

In order to adjust the height of fan head, in order to which the space of different height is blowed, the utility model embodiment Fan also include column 71, sleeve 72 and base 73, column 71 is fixedly connected with the second housing 62, and sleeve 72 and base 73 are solid Fixed connection, column 71 are telescopically arranged in sleeve 72., can by adjusting different telescopic locations of the column 71 on sleeve 72 Adjust the height of fan head.In addition, after being highly adjusted in place, also need that column 71 is positioned on sleeve 72 by fastener. Base 73 can play a part of increasing fan support face, by stablizing fan center of gravity, improve in the first flabellum 11 and the second fan Job stability and reliability when leaf 12 rotates.

It should be understood that fan of the present utility model can be applied to stand fan, desk fan, wall hanging electric fan, exhaust fan and hang In the product types such as fan, for different fan types, its concrete structure has corresponding difference.Such as when being applied to ceiling fan, then The parts such as the second motor, column, sleeve and the base of previous embodiment can not needed.It is it will be appreciated by those skilled in the art that right The various possible modifications of previous embodiment, are encompassed by within the technical solution of the utility model.

Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, Every equivalent structure transformation under design of the present utility model, made using the utility model specification and accompanying drawing content, or Directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.

Claims (10)

1. a kind of fan, it is characterised in that the fan includes the first flabellum and the second flabellum being oppositely arranged, first fan For leaf adjacent to the outlet air surface of the fan, second flabellum deviates from the outlet air surface, first flabellum and second flabellum Torsional direction on the contrary, be provided with drive division between first flabellum and second flabellum, in the driving during air-out First flabellum is rotated with first direction in the presence of portion, and second flabellum is turned with the second direction opposite with first direction It is dynamic, and the velocity of rotation of first flabellum is identical with the velocity of rotation of second flabellum.

2. fan according to claim 1, it is characterised in that the spacing between first flabellum and second flabellum For 0.05~0.5 times of the first flabellum radius.

3. fan according to claim 2, it is characterised in that the radius phase of first flabellum and second flabellum Deng.

4. fan according to claim 1, it is characterised in that the axle of the axis of first flabellum and second flabellum Line is overlapped and is horizontally disposed with.

5. fan according to claim 1, it is characterised in that the drive division includes the first motor, gear shaft and phase To the first bevel gear and second bevel gear of setting, the casing of first motor is fixed on the first housing, first electricity The output end tooth connection wheel shaft of machine, the gear shaft engage with the first bevel gear and the second bevel gear, and described first Bevel gear connects first flabellum, and the second bevel gear connects second flabellum.

6. fan according to claim 5, it is characterised in that the first flabellum axle, institute are fixed with the first bevel gear The first flabellum is stated to be sleeved in first flabellum axle；The second flabellum axle, second fan are fixed with the second bevel gear Leaf is sleeved in second flabellum axle.

7. fan according to claim 6, it is characterised in that the fan also includes the first spiral cover and the second spiral cover, institute The free end that the first spiral cover is stated with first flabellum axle is threadedly coupled, second spiral cover and the freedom of second flabellum axle End threaded connection.

8. according to the fan described in claim any one of 1-7, it is characterised in that the fan also includes net and bound round, and described first Flabellum and second flabellum be contained in the net hoop into space in.

9. according to the fan described in claim any one of 5-7, it is characterised in that the fan also includes being fixed on the second housing On the second motor, be fixed with the first panning gear in the output end of second motor, be fixed with first housing with Second panning gear of the first panning gear engagement.

10. fan according to claim 9, it is characterised in that the fan also includes column, sleeve and base, described Column is fixedly connected with second housing, and the sleeve is fixedly connected with the base, and the column is telescopically arranged in In the sleeve.