CN107339245B

CN107339245B - Fan

Info

Publication number: CN107339245B
Application number: CN201710640787.1A
Authority: CN
Inventors: 黄伙军
Original assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2019-08-23
Anticipated expiration: 2037-07-31
Also published as: CN107339245A

Abstract

The invention proposes a kind of fans, comprising: impeller；One end of motor, multiple blades coaxially connected with impeller, each blade is connected with impeller outer wall；Wherein, the ratio of distance and impeller radius of the other end of each blade away from impeller axis meets: 0.28~0.32.According to the technical solution of the present invention, to blade edge at a distance from axis and restriction is optimized in the ratio of impeller radius, keep the vane size interior in a limited space, improve the matching property with impeller size, gas through-flow ability is effectively improved, that is, improves the draught capacity of fan, to improve air quantity in a limited space, space is saved, the radiating and cooling ability of fan is improved.

Description

Fan

Technical field

The present invention relates to fan technology fields, in particular to a kind of fan.

Background technique

Fan is widely used in household, trip, various kinds of equipment as common radiating and cooling articles, and Wind Volume is general Time demand, generally rely at present improve power of motor so that improve rotation speed of the fan method improve air quantity, or increase flabellum Surface area improve air quantity, but improve power and will increase the requirement of heat dissipation, weaken the effect of the radiating and cooling of fan；It adopts It is then limited by use space with the method for increasing blade surface product.

Summary of the invention

The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.

In view of this, of the invention provides a kind of fan.

To achieve the goals above, technical solution of the present invention provides a kind of fan, comprising: impeller；Motor, it is same with impeller One end of axis connection, multiple blades, each blade is connected with impeller outer wall；Wherein, the other end of impeller radius and each blade The ratio of distance away from impeller axis meets: 0.28~0.32.

Wherein, the other end of impeller radius and each blade away from the ratio at a distance from impeller axis be preferably 0.28,0.3, 0.32。

In the technical scheme, by the setting of motor and coaxial with impeller, it can impeller rotation and then drive and leaf The connected blade rotation of wheel outer wall is to generate wind-force；The stability of impeller rotation and reduction coaxially can be improved in motor and impeller Vibration, extends the service life of fan；By limit the other end of impeller radius and each blade away from impeller axis at a distance from Ratio is optimized the dimensional fits ratio of blade and impeller, effectively increases gas through-flow ability, and then improve fan Draught capacity, thus in a limited space in improve air quantity, save space, improve the radiating and cooling ability of fan.

In the above-mentioned technical solutions, it is preferable that further include: air intake cover, and the outlet housing being fixedly connected with air intake cover, leaf Wheel is set in the cover that air intake cover and outlet housing are formed with blade, wherein the axis of air intake cover, the axis of outlet housing and impeller Axis collinear.

In the technical scheme, by setting air intake cover and the outlet housing being fixedly connected with air intake cover, make impeller and leaf Piece is set in the cover that air intake cover and outlet housing are formed, and in impeller band movable vane piece high speed rotation, reduces the entrance of other objects A possibility that blade rotating range, improves the safety that fan uses, extends the service life of fan；In addition, air intake cover Axis, the axis of outlet housing and the axis collinear of impeller, keep the structure of fan more compact, save space.

In the above-mentioned technical solutions, it is preferable that if distance of the other end of blade away from impeller axis is not less than 45mm, with The coaxial diameter of impeller is the cylindrical surface 90mm, and the intersection with blade is the first intersection；First intersection includes close to air inlet Second endpoint of the first end point of cover and close outlet housing；The tangent line of first end point and the first angle β of impeller axis₁It is 54 ° ~56 °；The tangent line of second endpoint and the second angle β of impeller axis₂It is 32 °~34 °.

In the technical scheme, distance of the other end of blade away from impeller axis is not less than 45mm, i.e. the rotation of blade is straight It is the cylindrical surface 90mm with the coaxial diameter of impeller when diameter is greater than 90mm, the intersection intersected with blade is the first intersection；It utilizes The intersection can limit the shape and angle of blade, to optimize the aeroperformance of blade；First intersection includes close to air inlet Second endpoint of the first end point of cover and close outlet housing；The tangent line of first end point and the first angle β of impeller axis₁It is 54 ° ~56 °；The tangent line of second endpoint and the second angle β of impeller axis₂It is 32 °~34 °, by two endpoints of the first intersection The specific restriction for locating tangent line angle, realizes the restriction to blade shape and angle, and then optimize the aeroperformance of blade, from And the aeroperformance of fan is improved, the purpose for improving air quantity is realized in a limited space, is improved efficiency, is reduced energy consumption.

In the above-mentioned technical solutions, it is preferable that if distance of the other end of blade away from impeller axis is not less than 60mm, with The coaxial diameter of impeller is the cylindrical surface 120mm, and the intersection with blade is the second intersection；Second intersection includes close to air inlet 4th endpoint of the third endpoint of cover and close outlet housing；The tangent line of third endpoint and the third angle β of impeller axis₃It is 74 ° ~76 °；The tangent line of 4th endpoint and the 4th angle β of impeller axis₄It is 24 °~26 °.

In the technical scheme, distance of the other end of blade away from impeller axis is not less than 60mm, i.e. the rotation of blade is straight It is the cylindrical surface 120mm with the coaxial diameter of impeller when diameter is greater than 120mm, the intersection intersected with blade is the second intersection；Benefit The shape and angle of blade can be limited, with the intersection to optimize the aeroperformance of blade；Second intersection include close into 4th endpoint of the third endpoint of fan housing and close outlet housing；The tangent line of third endpoint and the third angle β of impeller axis₃For 74 °~76 °；The tangent line of 4th endpoint and the 4th angle β of impeller axis₄It is 24 °~26 °, by the second intersection two The specific restriction of tangent line angle at endpoint, realizes the restriction to blade shape and angle, and then optimizes the pneumatic property of blade Can, to improve the aeroperformance of fan, the purpose for improving air quantity is realized in a limited space, efficiency is improved, reduces Energy consumption.

In the above-mentioned technical solutions, it is preferable that if distance of the other end of blade away from impeller axis is not less than 75mm, with The coaxial diameter of impeller is the cylindrical surface 150mm, and the intersection with blade is third intersection；Third intersection includes close to air inlet 6th endpoint of the 5th endpoint of cover and close outlet housing；The tangent line of 5th endpoint and the 5th angle β of impeller axis₅It is 41 ° ~46 °；The tangent line of 6th endpoint and the 6th angle β of impeller axis₆It is 13 °~16 °.

In the technical scheme, distance of the other end of blade away from impeller axis is not less than 75mm, i.e. the rotation of blade is straight It is the cylindrical surface 150mm with the coaxial diameter of impeller when diameter is greater than 150mm, the intersection intersected with blade is third intersection；Benefit The shape and angle of blade can be limited, with the intersection to optimize the aeroperformance of blade；Third intersection include close into 6th endpoint of the 5th endpoint of fan housing and close outlet housing；The tangent line of 5th endpoint and the 5th angle β of impeller axis₅For 41 °~46 °；The tangent line of 6th endpoint and the 6th angle β of impeller axis₆It is 13 °~16 °, by third intersection two The specific restriction of tangent line angle at endpoint, realizes the restriction to blade shape and angle, and then optimizes the pneumatic property of blade Can, to improve the aeroperformance of fan, the purpose for improving air quantity is realized in a limited space, efficiency is improved, reduces Energy consumption.

In the above-mentioned technical solutions, it is preferable that impeller includes the mounting groove set on impeller one end, and is at least passed through along axis The location hole of one end face of impeller is worn, motor is connected in impeller by mounting groove, and the motor shaft of motor is fixedly connected with location hole.

In the technical scheme, by the way that mounting groove and location hole are arranged on impeller, motor is enable to pass through mounting groove card Be connected in impeller, and the motor shaft of motor is fixedly connected with location hole, enable motor it is secured and stable be fixed on impeller It is interior, on the one hand make the space of fan more compact, saves space；Another aspect motor keeps two when impeller rotates Person is synchronous, to improve rotation efficiency, reduces vibration, extends the service life of fan.

In the above-mentioned technical solutions, it is preferable that multiple blades centered on the axis of impeller circumferentially array distribution in leaf The circumferential direction of wheel.

In the technical scheme, by by multiple blades centered on the axis of impeller circumferentially array distribution in impeller Circumferential, when making blade high speed rotation, uniform force subtracts all directions of fan to keep the balance and stabilization of fan always Lack vibration, extends the service life of fan.

In the above-mentioned technical solutions, it is preferable that motor is outer rotor DC motor.

In the technical scheme, by using conventional outer rotor DC motor, convenient for the rotation of motor impeller, and And outer rotor DC motor technology maturation can reduce cost and easy to repair using extensively.

In the above-mentioned technical solutions, it is preferable that impeller and multiple blades are integrally formed.

In the technical scheme, by the way that impeller and multiple blades to be integrally formed, production efficiency on the one hand can be improved, separately On the one hand the globality of impeller and blade is improved, alleviates the workload of installation, and improved steady when impeller blade rotates It is qualitative, reduce vibration when high speed rotation, and then extend the service life of fan.

In the above-mentioned technical solutions, it is preferable that the quantity of blade is 5.

In the technical scheme, by setting 5 for blade quantity, keep fan more steady in high speed rotation, have Effect promotes the aeroperformance of entire product.

Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.

Detailed description of the invention

Fig. 1 shows the cross-sectional view of the fan of embodiment according to the present invention；

Fig. 2 shows the main views of the impeller of the fan of embodiment according to the present invention and blade；

Fig. 3 shows the impeller of the fan of embodiment according to the present invention and the side view of blade；

Fig. 4 shows the schematic diagram of the fan of embodiment according to the present invention；

Fig. 5 shows the air intake cover main view of fan according to an embodiment of the invention；

Fig. 6 shows the air intake cover side view of fan according to an embodiment of the invention；

Fig. 7 shows the outlet housing main view of fan according to an embodiment of the invention；

Fig. 8 shows the outlet housing side view of fan according to an embodiment of the invention；

Fig. 9 shows the cylindrical surface intersection that blade according to an embodiment of the invention is 90mm with coaxial diameter The schematic diagram of tangent line angle at two-end-point.

Figure 10 shows blade according to an embodiment of the invention and mutually passes through with coaxial diameter for the cylindrical surface of 120mm The schematic diagram of tangent line angle at line two-end-point.

Figure 11 shows blade according to an embodiment of the invention and mutually passes through with coaxial diameter for the cylindrical surface of 150mm The schematic diagram of tangent line angle at line two-end-point.

Wherein, corresponding relationship of the Fig. 1 into Figure 11 between appended drawing reference and component names are as follows:

10 fans, 100 air intake covers, 102 blades, 104 motors, 106 impellers, 108 outlet housings, 1,102 first intersections, 1104 second intersections, 1106 third intersections, 1122 first end points, 1124 third endpoints, 1126 the 5th endpoints, 1,142 second Endpoint, 1144 the 4th endpoints, 1146 the 6th endpoints.

Specific embodiment

It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.

According to some embodiments of the present invention referring to Fig. 1 to Figure 11 description.

As shown in Figures 1 and 2, the fan 10 of the one embodiment proposed according to the present invention, comprising: impeller 106；Motor 104, one end of, multiple blades 102 coaxially connected with impeller 106, each blade 102 is connected with 106 outer wall of impeller；Wherein, leaf The other end for taking turns 106 radiuses and each blade 102 meets away from the ratio at a distance from 106 axis of impeller: 0.28~0.32.

Wherein, 106 radius of impeller and the other end of each blade 102 are preferably away from the ratio at a distance from 106 axis of impeller 0.28、0.3、0.32。

In this embodiment, by the setting of motor 104 and coaxial with impeller 106, it can the rotation of impeller 106 and then band The dynamic rotation of blade 102 being connected with 106 outer wall of impeller is to generate wind-force；Impeller coaxially can be improved in motor 104 and impeller 106 The stability of 106 rotations simultaneously reduces vibration, extends the service life of fan 10；By limiting 106 radius of impeller and each blade The ratio range of distance of 102 other end away from 106 axis of impeller is 0.28~0.32, to the size of blade 102 and impeller 106 Match ratio is optimized, and effectively increases gas through-flow ability, and then improves the draught capacity of fan 10, thus limited Space in improve air quantity, save space, improve the radiating and cooling ability of fan 10.

As shown in Fig. 1 and Fig. 4 to Fig. 8, in the above embodiment, it is preferable that further include: air intake cover 100, and with air inlet The outlet housing 108 that cover 100 is fixedly connected, impeller 106 and blade 102 are set to the cover that air intake cover 100 and outlet housing 108 are formed It is interior, wherein the axis collinear of the axis of air intake cover 100, the axis of outlet housing 108 and impeller 106.

In this embodiment, by setting air intake cover 100 and the outlet housing 108 being fixedly connected with air intake cover 100, make leaf Wheel 106 is set in the cover that air intake cover 100 and outlet housing 108 are formed with blade 102, is revolved at a high speed in impeller 106 with movable vane piece 102 When turning, reduce a possibility that other objects enter 102 rotating range of blade, improve the safety that fan 10 uses, extends The service life of fan 10；In addition, the axis collinear of the axis of the axis of air intake cover 100, outlet housing 108 and impeller 106, makes The structure of fan 10 is more compact, saves space.

As shown in figure 9, in the above embodiment, it is preferable that if distance of the other end of blade 102 away from 106 axis of impeller It is then the cylindrical surface 90mm with the coaxial diameter of impeller 106, the intersection with blade 102 is the first intersection not less than 45mm 1102；First intersection 1102 includes the first end point 1122 close to air intake cover 100 and the second endpoint close to outlet housing 108 1142；The tangent line of first end point 1122 and the first angle β of impeller axis₁It is 54 °~56 °；The tangent line of second endpoint 1142 with Second angle β of impeller axis₂It is 32 °~34 °.

In this embodiment, distance of the other end of blade 102 away from 106 axis of impeller is not less than 45mm, i.e. blade 102 It is the cylindrical surface 90mm with the coaxial diameter of impeller 106 when rotating diameter is greater than 90mm, intersection intersect with blade 102 is the One intersection 1102；The shape and angle of blade 102 can be limited, using the intersection to optimize the aeroperformance of blade 102； First intersection 1102 includes the first end point 1122 close to air intake cover 100 and the second endpoint 1142 close to outlet housing 108；The The tangent line of end point 1122 and the first angle β of impeller axis₁It is 54 °~56 °；The tangent line and impeller axis of second endpoint 1142 The second angle β₂It is 32 °~34 °, by the specific restriction to tangent line angle at 1,102 two endpoints of the first intersection, realizes Restriction to blade 102 shape and angle, and then the aeroperformance of blade 102 is optimized, to improve the pneumatic of fan 10 Performance realizes the purpose for improving air quantity in a limited space, improves efficiency, reduce energy consumption.

As shown in Figure 10, in the above embodiment, it is preferable that if distance of the other end of blade 102 away from 106 axis of impeller It is then the cylindrical surface 120mm with the coaxial diameter of impeller 106, the intersection with blade 102 is the second intersection not less than 60mm 1104；Second intersection 1104 includes the third endpoint 1124 close to air intake cover 100 and the 4th endpoint close to outlet housing 108 1144；The tangent line of third endpoint 1124 and the third angle β of impeller axis₃It is 74 °~76 °；The tangent line of 4th endpoint 1144 with 4th angle β of impeller axis₄It is 24 °~26 °.

In this embodiment, distance of the other end of blade 102 away from 106 axis of impeller is not less than 60mm, i.e. blade 102 It is the cylindrical surface 120mm with the coaxial diameter of impeller 106 when rotating diameter is greater than 120mm, the intersection intersected with blade 102 is Second intersection 1104；The shape and angle of blade 102 can be limited, using the intersection to optimize the pneumatic property of blade 102 Energy；Second intersection 1104 includes the third endpoint 1124 close to air intake cover 100 and the 4th endpoint close to outlet housing 108 1144；The tangent line of third endpoint 1124 and the third angle β of impeller axis₃It is 74 °~76 °；The tangent line of 4th endpoint 1144 with 4th angle β of impeller axis₄It is 24 °~26 °, passes through the specific limit to tangent line angle at 1,104 two endpoints of the second intersection It is fixed, the restriction to blade 102 shape and angle is realized, and then optimize the aeroperformance of blade 102, to improve fan 10 Aeroperformance, realize in a limited space improve air quantity purpose, improve efficiency, reduce energy consumption.

As shown in figure 11, in the above embodiment, it is preferable that if distance of the other end of blade 102 away from 106 axis of impeller It is then the cylindrical surface 150mm with the coaxial diameter of impeller 106, the intersection with blade 102 is third intersection not less than 75mm 1106；Third intersection 1106 includes the 5th endpoint 1126 close to air intake cover 100 and the 6th endpoint close to outlet housing 108 1146；The tangent line of 5th endpoint 1126 and the 5th angle β of impeller axis₅It is 41 °~46 °；The tangent line of 6th endpoint 1146 with 6th angle β of impeller axis₆It is 13 °~16 °.

In this embodiment, distance of the other end of blade 102 away from 106 axis of impeller is not less than 75mm, i.e. blade 102 It is the cylindrical surface 150mm with the coaxial diameter of impeller 106 when rotating diameter is greater than 150mm, the intersection intersected with blade 102 is Third intersection 1106；The shape and angle of blade 102 can be limited, using the intersection to optimize the pneumatic property of blade 102 Energy；Third intersection 1106 includes the 5th endpoint 1126 close to air intake cover 100 and the 6th endpoint close to outlet housing 108 1146；The tangent line of 5th endpoint 1126 and the 5th angle β of impeller axis₅It is 41 °~46 °；The tangent line of 6th endpoint 1146 with 6th angle β of impeller axis₆It is 13 °~16 °, passes through the specific limit to tangent line angle at 1,106 two endpoints of third intersection It is fixed, the restriction to blade 102 shape and angle is realized, and then optimize the aeroperformance of blade 102, to improve fan 10 Aeroperformance, realize in a limited space improve air quantity purpose, improve efficiency, reduce energy consumption.

As shown in Figure 1, in the above embodiment, it is preferable that impeller 106 includes the mounting groove set on 106 one end of impeller, with And at least running through the location hole of 106 1 end face of impeller along axis, motor 104 is connected in impeller 106 by mounting groove, motor 104 104 axis of motor is fixedly connected with location hole.

In this embodiment, by the way that mounting groove and location hole are arranged on impeller 106, motor 104 is enable to pass through installation Slot is connected in impeller 106, and 104 axis of motor of motor 104 is fixedly connected with location hole, enable motor 104 securely and Stable is fixed in impeller 106, on the one hand makes the space of fan 10 more compact, saves space；Another aspect motor 104 When impeller 106 rotates, keeps the two synchronous, to improve rotation efficiency, reduce vibration, extend fan 10 Service life.

As shown in Figure 2 and Figure 3, in the above embodiment, it is preferable that multiple blades 102 are centered on the axis of impeller 106 Circumferentially array distribution is in the circumferential direction of impeller 106.

In this embodiment, by by multiple blades 102 centered on the axis of impeller 106 circumferentially array distribution in leaf The circumferential direction of wheel 106, when making 102 high speed rotation of blade, all directions of fan 10 uniform force always, to keep fan 10 It balances and stablizes, reduce vibration, extend the service life of fan 10.

In the above embodiment, it is preferable that motor 104 is outer rotor DC motor.

In this embodiment, by using conventional outer rotor DC motor, convenient for the rotation of 104 impeller 106 of motor Turn, and outer rotor DC motor technology maturation can reduce cost and easy to repair using extensively.

As shown in Fig. 2, in the above embodiment, it is preferable that impeller 106 and multiple blades 102 are integrally formed.

In this embodiment, by the way that impeller 106 and multiple blades 102 to be integrally formed, production effect on the one hand can be improved On the other hand rate improves the globality of impeller 106 and blade 102, alleviate the workload of installation, and improves impeller 106 Stability when blade 102 rotates, reduces vibration when high speed rotation, and then extend the service life of fan 10.

Such as Fig. 2, in the above embodiment, it is preferable that the quantity of blade 102 is 5.

In this embodiment, by setting 5 for 102 quantity of blade, keep fan 10 more steady in high speed rotation, Effectively promote the aeroperformance of entire product.

Specific embodiment:

The fan 10 of a specific embodiment of the invention, as shown in Figure 1, including impeller 106 and coaxial with impeller 106 And by mounting groove and snap connection the motor 104 in impeller 106；It as shown in Figure 2 and Figure 3, further include 5 blades 102, One end of each blade 102 is connected with 106 outer wall of impeller, and the equably circumferentially array distribution centered on 106 axis of impeller In the circumferential direction of impeller 106；106 radius of impeller and the other end of each blade 102 are away from the ratio at a distance from 106 axis of impeller 0.3；It further include air intake cover 100 and the outlet housing being fixedly connected with air intake cover 100 108, impeller 106 as shown in Fig. 4 to Fig. 8 It is set to blade 102 in the cover that air intake cover 100 and outlet housing 108 are formed, wherein axis, the outlet housing 108 of air intake cover 100 Axis and impeller 106 axis collinear；As shown in Figure 10, blade 102 is around the radius of turn that 106 center of impeller rotates 65mm, is the cylindrical surface 120mm with the coaxial diameter of impeller 106, has the second intersection 1104 with blade 102；Second phase is passed through Line 1104 includes the third endpoint 1124 close to air intake cover 100 and the 4th endpoint 1144 close to outlet housing 108；Third endpoint 1124 tangent line and the angle of impeller axis are 75 °；The tangent line of 4th endpoint 1144 and the angle of impeller axis are 25 °.

The compact design in impeller 106 is set by motor 104, saves space；Equably it is in by 5 impellers 106 Circumference array is distributed in the circumferential direction of impeller 106, and when high speed rotation is more steady, reduces vibration, extends the service life of fan 10； The other end of 106 radius of impeller and each blade 102 is limited away from the ratio at a distance from 106 axis of impeller as 0.3, optimizes impeller 106 with the dimension scale of blade 102, effectively increase gas through-flow ability, and then improve the draught capacity of fan 10, thus Air quantity is improved in a limited space, improves the radiating and cooling ability of fan 10；Pass through the phase to cylindrical surface and blade 102 The restriction of tangent line angle at transversal endpoint, realizes the restriction to blade 102 shape and angle, and then optimizes blade 102 Aeroperformance realize the purpose for improving air quantity in a limited space, improve energy to improve the aeroperformance of fan 10 Effect, reduces energy consumption.

The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, according to the technical solution of the present invention, effective excellent The dimension scale of blade and impeller is changed, the shape of blade has also been optimized, and motor is set to impeller internal, thus whole from fan Space is saved on body, keeps the operating of fan more steady, optimizes the aeroperformance of blade, to improve the through-flow energy of fan Power, and then the purpose for improving air quantity is realized in a limited space, efficiency is improved, energy consumption is reduced, extends making for fan Use the service life.

In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as indicating Or imply relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " installation ", The terms such as " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, being also possible to can Dismantling connection, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.For this For the those of ordinary skill in field, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In description of the invention, it is to be understood that the instructions such as term " on ", "lower", "left", "right", "front", "rear" Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched It states, rather than the device or unit of indication or suggestion meaning must have specific direction, be constructed and operated in a specific orientation, It is thus impossible to be interpreted as limitation of the present invention.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with Suitable mode combines.

These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of fan characterized by comprising

Impeller；

Motor, it is coaxially connected with the impeller；

Multiple blades, one end of each blade are connected with the impeller outer wall；

Wherein, the impeller radius and the other end of each blade meet away from the ratio at a distance from the impeller axis: 0.28~0.32；

Air intake cover, and the outlet housing being fixedly connected with the air intake cover, the impeller and the blade are set to the air intake cover In the cover formed with the outlet housing；

If distance of the other end of the blade away from the impeller axis is not less than 45mm, coaxial diameter is with the impeller The cylindrical surface 90mm, the intersection with the blade are the first intersection；

First intersection includes the first end point close to the air intake cover and the second endpoint close to the outlet housing；

First angle β of the tangent line of the first end point and the impeller axis₁It is 54 °~56 °；

Second angle β 2 of the tangent line of second endpoint and the impeller axis is 32 °~34 °.

2. fan according to claim 1, which is characterized in that

The axis collinear of the axis of the air intake cover, the axis of the outlet housing and the impeller.

3. fan according to claim 1, which is characterized in that if the other end of the blade away from the impeller axis away from It is then the cylindrical surface 120mm with the coaxial diameter of the impeller from 60mm is not less than, the intersection with the blade is that the second phase is passed through Line；

Second intersection includes the third endpoint close to the air intake cover and the 4th endpoint close to the outlet housing；It is described The third angle β of the tangent line of third endpoint and the impeller axis₃It is 74 °~76 °；

The tangent line of 4th endpoint and the 4th angle β of the impeller axis₄It is 24 °~26 °.

4. fan according to claim 1, which is characterized in that if the other end of the blade away from the impeller axis away from From 75mm is not less than, then it is the cylindrical surface 150mm with the coaxial diameter of the impeller, is passed through with the intersection of the blade for third phase Line；

The third intersection includes the 5th endpoint close to the air intake cover and the 6th endpoint close to the outlet housing；It is described 5th angle β of the tangent line of the 5th endpoint and the impeller axis₅It is 41 °~46 °；

The tangent line of 6th endpoint and the 6th angle β of the impeller axis₆It is 13 °~16 °.

5. fan according to claim 1, which is characterized in that the impeller includes the installation set on described impeller one end Slot, and at least run through along axis the location hole of one end face of impeller, the motor is connected in described by the mounting groove In impeller, the motor shaft of the motor is fixedly connected with the location hole.

6. fan according to claim 1, which is characterized in that

The multiple blade centered on the axis of the impeller circumferentially array distribution in the circumferential direction of the impeller.

7. fan according to claim 1, which is characterized in that the motor is outer rotor DC motor.

8. fan according to claim 1, which is characterized in that the impeller and the multiple blade are integrally formed.

9. fan according to claim 1, which is characterized in that the quantity of the blade is 5.