CN105351219B - fan device and electronic equipment - Google Patents
fan device and electronic equipment Download PDFInfo
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- CN105351219B CN105351219B CN201510845374.8A CN201510845374A CN105351219B CN 105351219 B CN105351219 B CN 105351219B CN 201510845374 A CN201510845374 A CN 201510845374A CN 105351219 B CN105351219 B CN 105351219B
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Abstract
The invention discloses fan devices and electronic equipment, which comprise a volute, an impeller, wherein the impeller is arranged in the volute and comprises a hub and at least two blades, the hub is provided with a axis, the volute is provided with an air inlet and an air outlet, airflow can enter the air inlet along the axial direction of the impeller and can flow out of the outlet air along the radial direction of the impeller, the at least two blades are arranged on the hub, and an included angle formed by an axial trace of each blade in the axial direction and a radial plane vertical to the axis is an acute angle.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to fan devices and electronic equipment.
Background
With the continuous development of scientific technology, electronic products have also been developed rapidly, and in order to avoid the damage of internal components caused by heat generated by the electronic products in the working process, a fan is usually disposed inside the electronic products to promote the heat inside the casing to be dissipated to the outside.
In many electronic devices, centrifugal fans are used, which include: a volute; the impeller is arranged in the volute; the impeller comprises a hub and at least two blades. The volute is provided with an air inlet and an air outlet, and airflow enters the air inlet along the axial direction of the impeller and flows out of the outlet air along the radial direction of the impeller.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
among the prior art, the business turn over autogenous cutting face projection line of centrifugal fan's blade is straight lines to become 90 degrees contained angles with the radial plane of blade, and then lead to the air current that gets into from the air intake on fan both sides to cause the impact easily, make the stack of the crest and the trough of noise sound wave, make the increase of centrifugal fan noise, so, among the prior art, centrifugal fan device has the technical problem that the noise is big.
Disclosure of Invention
The embodiment of the application provides well fan device and electronic equipment, has solved prior art, and centrifugal fan device has the technical problem that the noise is big, has realized the technological effect who reduces the noise in the centrifugal fan device.
The aspect of the embodiment of the present application provides fan apparatus, including:
a volute;
an impeller disposed within the volute;
the impeller comprises a hub and at least two blades;
the hub is provided with axes, the volute is provided with an air inlet and an air outlet, and air flow can enter the air inlet along the axial direction of the impeller and can flow out of the outlet air along the radial direction of the impeller;
the at least two fan blades are arranged on the hub, wherein an included angle formed by an axial trace of each fan blade in the at least two fan blades in the axial direction and a radial plane perpendicular to the axis is an acute angle.
Optionally, an included angle formed by an axial trace of each of the at least two blades in the axial direction and a radial plane perpendicular to the axis is an acute angle, specifically:
an included angle formed by an axial trace line on the axial direction at the outer diameter of each fan blade and the radial plane is an acute angle; and/or
An included angle formed by an axial trace line in the axial direction at the inner diameter of each fan blade and the radial plane is an acute angle.
Optionally, an axial trace in the axial direction at the outer diameter of each fan blade and/or an axial trace in the axial direction at the inner diameter of each fan blade is a curve, and a concave direction of the axial trace is opposite to a rotation direction of each fan blade.
Optionally, an axial trace in the axial direction at the outer diameter of each fan blade and/or an axial trace in the axial direction at the inner diameter of each fan blade is an oblique straight line.
Optionally, a radial trace of each fan blade in the radial direction is a curve or a straight line.
Optionally, each fan blade includes th part and second part, th part includes th end and the second end opposite to th end, th end with the second part is connected, the second end sets up on the wheel hub, the contained angle that forms between th part and the second part is the obtuse angle.
Optionally, the fan device further includes a driving structure, the driving structure is connected to the hub, and the driving structure can drive the hub to rotate, so as to drive the at least two blades to rotate.
Optionally, the fan apparatus further includes a reinforcing ring, a th radius of the reinforcing ring is greater than a second radius of the hub, each of the blades includes a third end and a fourth end different from the third end, the third end is fixed to the hub, the fourth end is fixed to the reinforcing ring, and the reinforcing ring and the impeller are integrally disposed in the volute.
Another aspect of the present embodiment provides electronic devices, including:
the electronic component packaging equipment comprises an equipment main body, wherein at least electronic components are arranged in the equipment main body;
a fan unit provided inside the apparatus main body for dissipating heat generated by the at least electronic components, the fan unit including:
a volute;
an impeller disposed within the volute;
the impeller comprises a hub and at least two blades;
the hub is provided with axes, the volute is provided with an air inlet and an air outlet, and air flow can enter the air inlet along the axial direction of the impeller and can flow out of the outlet air along the radial direction of the impeller;
the at least two fan blades are arranged on the hub, wherein an included angle formed by an axial trace of each fan blade in the at least two fan blades in the axial direction and a radial plane perpendicular to the axis is an acute angle.
Optionally, an included angle formed by an axial trace of each of the at least two blades in the axial direction and a radial plane perpendicular to the axis is an acute angle, specifically:
an included angle formed by an axial trace line on the axial direction at the outer diameter of each fan blade and the radial plane is an acute angle; and/or
An included angle formed by an axial trace line in the axial direction at the inner diameter of each fan blade and the radial plane is an acute angle.
Optionally, an axial trace in the axial direction at the outer diameter of each fan blade and/or an axial trace in the axial direction at the inner diameter of each fan blade is a curve, and a concave direction of the axial trace is opposite to a rotation direction of each fan blade.
Optionally, an axial trace in the axial direction at the outer diameter of each fan blade and/or an axial trace in the axial direction at the inner diameter of each fan blade is an oblique straight line.
Optionally, a radial trace of each fan blade in the radial direction is a curve or a straight line.
Optionally, each fan blade includes th part and second part, th part includes th end and the second end opposite to th end, th end with the second part is connected, the second end sets up on the wheel hub, the contained angle that forms between th part and the second part is the obtuse angle.
Optionally, the fan device further includes a driving structure, the driving structure is connected to the hub, and the driving structure can drive the hub to rotate, so as to drive the at least two blades to rotate.
Optionally, the fan apparatus further includes a reinforcing ring, a th radius of the reinforcing ring is greater than a second radius of the hub, each of the blades includes a third end and a fourth end different from the third end, the third end is fixed to the hub, the fourth end is fixed to the reinforcing ring, and the reinforcing ring and the impeller are integrally disposed in the volute.
The or more technical solutions in the embodiment of the present application have at least the following or more technical effects:
1. the fan device comprises a volute and an impeller, wherein the impeller is arranged in the volute and comprises a hub and at least two blades, the hub is provided with axes, the volute is provided with an air inlet and an air outlet, air flow can enter the air inlet along the axial direction of the impeller and can flow out of outlet air along the radial direction of the impeller, the at least two blades are arranged on the hub, and an axial trace of each blade in the at least two blades in the axial direction and an included angle formed by a radial plane vertical to the axial line are acute angles.
2. In the fan device in the embodiment of the present application, the axial trace in the axial direction at the outer diameter of each fan blade and/or the axial trace in the axial direction at the inner diameter of each fan blade is a curve, and the concave direction of the axial trace is opposite to the rotation direction of each fan blade, that is, in the present application, the axial trace at the outer diameter of the fan blade and/or the axial trace at the inner diameter of the fan blade in the centrifugal fan are set to be concave in the direction opposite to the rotation direction of the fan blade, so that when the fan device is in an operating state, the pressure applied to the middle part of the axial trace by the airflow in the fan device is greater than the pressure applied to the two end parts of the axial trace, which is beneficial to the dust on the fan blade moving from the middle part with large pressure to the two end positions with small pressure and being thrown out along with the airflow from the two ends, therefore, the technical effect of reducing the accumulation of dust on the fan blades is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced, and it is obvious that the drawings in the following description are only embodiments of the present invention.
FIG. 1 is a schematic structural diagram of a fan device provided in embodiment of the present application;
FIG. 2 is a front view of an impeller including a stiffening ring in accordance with an embodiment of the present application;
FIG. 3 is a schematic perspective view of an impeller including a stiffening ring in accordance with an embodiment of the present application;
FIG. 4 is a front view of an impeller according to an embodiment of the present application;
fig. 5 is a block diagram of electronic devices according to a second embodiment of the present application.
Detailed Description
The embodiment of the application solves the technical problem that the noise of the centrifugal fan device is large in the prior art by providing fan devices and electronic equipment, and achieves the technical effect of reducing the noise in the centrifugal fan device.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
a volute;
an impeller disposed within the volute;
the impeller comprises a hub and at least two blades;
the hub is provided with axes, the volute is provided with an air inlet and an air outlet, and air flow can enter the air inlet along the axial direction of the impeller and can flow out of the outlet air along the radial direction of the impeller;
the at least two fan blades are arranged on the hub, wherein an included angle formed by an axial trace of each fan blade in the at least two fan blades in the axial direction and a radial plane perpendicular to the axis is an acute angle.
The fan device comprises a volute, an impeller, a hub and at least two blades, wherein the hub is provided with axes, the volute is provided with an air inlet and an air outlet, air flow can enter the air inlet along the axial direction of the impeller and can flow out of the outlet air along the radial direction of the impeller, the at least two blades are arranged on the hub, an axial trace of each blade in the at least two blades in the axial direction and a radial plane perpendicular to the axes form an acute angle, namely, in the application, the blades of the centrifugal fan are obliquely arranged on the hub, the axial trace formed by the blades in the axial direction and the radial plane perpendicular to the axes of the hub form an acute angle, so that an air inlet and outlet tangent plane projection connecting line of the blades of the centrifugal fan cannot form an angle of 90 degrees with the radial plane of the blades, the impact of the air flow entering from the air inlets at two sides of the fan can be avoided, the wave crest and wave crest of a wave trough of noise can be reduced, the superposition of the wave crest and the wave trough of the centrifugal fan can be realized, and the technical problem of noise in the prior art can be effectively reduced.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are partial embodiments of the technical solutions of the present invention, rather than all embodiments.
Example
Please refer to fig. 1, fan apparatuses provided for the present application include a volute 1 and an impeller 2, the impeller 2 is disposed in the volute, in practical applications, the impeller 2 can be fixed in the volute 1 by bolts and threads, of course, other manners can also be used, without limitation, the volute 1 is further provided with an air inlet and an air outlet (not shown in the drawings), so that an air flow can enter the fan apparatus from the air inlet on the volute 1 and exit the fan apparatus from the air outlet on the volute 1. referring to fig. 2, the structural schematic diagram of the impeller 2 in the fan apparatus is shown, the impeller 2 includes a hub 21 and fan blades 22, the hub 21 has an axis of rotation (not shown in the drawings), the axis is perpendicular to a plane in which the hub 21 is located, in practical applications, the hub 21 can rotate around the axis, the number of the fan blades 22 is at least two, in this embodiment, the number of the fan blades 22 is specifically set to 31, and, of course, in practical applications, those skilled in the art may set other numbers as needed, such as 2, 20, or 40.
With reference to fig. 2, in a practical application, fan blades 22 may be fixed to hub 21 by an adhesive, or may be integrally formed with hub 21 by a mold, or may be fixed to hub 21 by other methods, in this embodiment, fan blades 22 are fixed to hub 21 by an adhesive, when fan blades 22 are fixed to hub 21 by an adhesive, fan blades 22 form axial traces in an axial direction, where the axial direction is aligned with axial direction , fan blades 22 and hub 21 form radial planes in a plane perpendicular to the axial direction, and an included angle between the radial planes and the axial traces of fan blades 22 is an acute angle.
Like this, when wheel hub 21 drives flabellum 22 rotatory, the air current can follow impeller 2's axial direction and get into the air intake, can follow impeller 2's radial direction outflow export wind, because contained angle between radial plane and flabellum 22's axial trace is the acute angle, thus, the air current that gets into from the air intake on fan both sides just can not cause the frontal impact, and then just also can reduce the crest and the crest of noise sound wave, the stack of trough and trough, thereby reduce centrifugal fan's noise, therefore, can effectively solve among the prior art, centrifugal fan device has the technical problem that noise is big, realize reducing the technological effect of the noise among the centrifugal fan device.
In a specific implementation process, an axial trace formed by the fan blade 22 in the axial direction may be an axial trace formed by an inner diameter of the fan blade 22 in the axial direction, or an axial trace formed by an outer diameter of the fan blade 22 in the axial direction, it is of course also possible to have both the axial track formed in the axial direction by the inner diameter of the fan blade 22 and the axial track formed in the axial direction by the outer diameter of the fan blade 22, in particular, please refer to a in fig. 3, in fig. 3 a, the dashed line indicates the axis of hub 21, when the axial trace formed by blade 22 in the axial direction is, in particular, axial trace 23 formed in the axial direction at the outer diameter of the blade, then, the angle formed by the axial trace 23 at the outer diameter of the fan blade 22 and the radial plane will be acute, as shown in figure 3 a, the acute angle is 60 degrees, and in practical application, the degree of the acute angle can be designed according to practical situations.
In practical applications, the axial trace 23 at the outer diameter of the fan blade 22 may be set to be a curved line, and may also be set to be an oblique straight line, no matter the axial trace 23 at the outer diameter of the fan blade 22 is set to be a curved line, or an oblique straight line, as long as it is ensured that the included angle formed by the axial trace 23 and the radial plane is an acute angle. Specifically, please refer to b in fig. 3 in combination, which is an enlarged view of C in fig. 3 a, when the axial trace 23 at the outer diameter of the fan blade 22 is set to be a curved shape, the concave direction of the curved axial trace 23 may also be set to be the direction opposite to the rotation direction of the fan blade 22, for example, when the rotation direction of the fan blade 22 is clockwise, the concave direction of the axial trace at the outer diameter of the fan blade 22 is counterclockwise; when the direction of rotation of fan blade 22 is counter-clockwise, the concavity of the axial trace at the outer diameter of fan blade 22 is clockwise.
, the following embodiments of the present application will be described with reference to the rotation direction of fan blade 22 being specifically the counterclockwise direction, where the solid arrow in b of fig. 3 indicates the rotation direction of fan blade 22, i.e. the counterclockwise direction, and the dotted arrow indicates the concave direction of axial trace 23 at the outer diameter of fan blade 22, i.e. the clockwise direction, so that when hub 21 drives fan blade 22 to rotate counterclockwise, the pressure applied to the middle portion, i.e. the concave middle portion, of fan blade 22 is greater than the pressure applied to the portions of the two ends, i.e. the concave middle portion, of fan blade 22 that are close to the two sides of the middle portion, which helps dust on fan blade 22 move from the middle portion with higher pressure to the two ends with lower pressure, and is thrown out with the air flow from the two ends, thereby having the technical effect of reducing the dust accumulation on fan blade 22.
Similarly, when the axial trace formed by blade 22 in the axial direction is the axial trace 26 formed in the axial direction at the inner diameter of blade 22, then the included angle formed by axial trace 26 at the inner diameter of blade 22 and the radial plane is also acute.
In practical applications, the axial trace 26 at the inner diameter of the fan blade 22 may be set as a curved line or an oblique straight line, and whether the axial trace 26 at the inner diameter of the fan blade 22 is set as a curved line or an oblique straight line, it is only necessary to ensure that the included angle formed by the axial trace 26 and the radial plane is an acute angle. Specifically, when the axial trace 26 at the inner diameter of the fan blade 22 is set as a curve, the concave direction of the curved axial trace 26 may also be set to be opposite to the rotation direction of the fan blade 22, for example, when the rotation direction of the fan blade 22 is clockwise, the concave direction of the axial trace 26 at the inner diameter of the fan blade 22 is counterclockwise; when the direction of rotation of fan blade 22 is counter-clockwise, the concavity of axial trace 26 at the inner diameter of fan blade 22 is clockwise. In this embodiment, specifically, taking the rotation direction of the fan blade 22 as a clockwise direction as an example, the concave direction of the axial trace 26 at the inner diameter of the fan blade 22 is a counterclockwise direction, so that when the hub 21 drives the fan blade 22 to rotate clockwise, the pressure of the air flow in the middle of the fan blade 22, i.e. the concave middle portion, is greater than the pressure of the air flow at the two ends of the fan blade 22, i.e. the concave middle portion, which is close to the two sides of the middle portion, which helps the dust on the fan blade 22 move from the middle portion with the greater pressure to the two end positions with the smaller pressure, and is thrown out along with the air flow thrown out from the two ends, thereby having the technical effect of reducing the dust accumulation on the fan blade 22.
Similarly, when the axial trace formed by the fan blade 22 in the axial direction is the axial trace 23 formed in the axial direction at the outer diameter of the fan blade 22 and the axial trace 26 formed in the axial direction at the inner diameter of the fan blade 22, the included angle formed by the axial trace 23 at the outer diameter of the fan blade 22 and the radial plane is an acute angle, and the included angle formed by the axial trace 26 at the inner diameter of the fan blade 22 and the radial plane is an acute angle. In practical applications, the axial trace 23 at the outer diameter and the axial trace 26 at the inner diameter of the fan blade 22 may be set to be curved lines at the same time, and may also be set to be inclined straight lines at the same time, in particular practice, the two axial traces may be set to be curved lines at the outer diameter and the axial trace 26 at the inner diameter of the fan blade 22 at the same time, as long as the two axial traces are ensured to form acute angles with the radial plane respectively.
Specifically, when the axial trace 23 at the outer diameter and the axial trace 26 at the inner diameter of the fan blade 22 are both set to be curved, the concave directions of the two axial traces can be set to be opposite to the rotation direction of the fan blade 22, for example, when the rotation direction of the fan blade 22 is clockwise, the concave directions of the axial trace 26 at the inner diameter and the axial trace 23 at the outer diameter of the fan blade 22 are counterclockwise; specifically, when the rotation direction of the fan blade 22 is clockwise, and the concave directions of the axial trace 26 at the inner diameter and the axial trace 23 at the outer diameter of the fan blade 22 are counterclockwise, when the hub 21 drives the fan blade 22 to rotate clockwise, the pressure applied to the air flow in the middle of the inner diameter and the outer diameter of the fan blade 22, i.e., the middle of the concave direction, is greater than the pressure applied to the air flow at the two ends of the fan blade 22, i.e., the portions of the concave direction that are close to the two sides of the middle portion, so that the dust on the fan blade 22 moves from the middle portion with the greater pressure to the two ends with the smaller pressure, and is thrown away with the air flow from the two ends, thereby having the technical effect of reducing the dust accumulation on the fan blade 22.
In a specific implementation, a trace formed by fan blade 22 in a direction perpendicular to the axial direction or the axial direction is a radial trace, in a specific implementation, the radial trace may be set as a curve, or the radial trace may be set as an oblique straight line, specifically, referring to fig. 4, when the radial trace of fan blade 22 is set as a curve in fig. 4, fan blade 22 may be divided into two parts along the radial trace, that is, the third part and the second part 24, and an included angle formed between the third part 25 and the second part 24 is an obtuse angle, as shown in fig. 4 as 135 °, so as to facilitate reducing air pressure moving from a root part of fan blade 22 close to the air inlet end to a tail part away from the air inlet end, that is, to facilitate reducing noise generated during air flow movement, in a practical application, second part 25 and second part 24 may be fixedly connected by an adhesive, or may be integrally formed by mold , and in particular, when second part 25 and second part 24 are fixedly connected by an adhesive, second 3875 may be fixed on second part 24, and hub 21 is integrally connected to hub wheel hub 21 by an adhesive.
In the specific implementation process, please continue to use the above example, and please continue to refer to fig. 2, the fan apparatus further includes a driving structure (not shown) and a reinforcing ring 3, a radius of the reinforcing ring 3 is greater than a radius of the hub 21, an end of the fan blade 22 is fixed on the reinforcing ring 3, another end different from the end is fixed on the hub 21, the driving structure may be installed in a hollow portion in the hub 21, in practical application, the driving structure may be connected to the hub 21 by a bolt connection manner, the driving structure may be connected to the hub 21 by a welding manner, and of course, the connection may be implemented by other manners, which is not limited herein.
In a specific implementation process, the driving structure may be a dc motor, a dc brushless motor, or the like, and of course, a person having ordinary skill in the art to which the present application belongs may select a type of the driving structure and a specific circuit according to needs, and the present application is not limited specifically. When the driving structure is in a driving state, the driving structure can drive the hub 21 to rotate clockwise, so that the hub 21 drives the fan blades 22 to rotate clockwise; similarly, the driving structure may also drive hub 21 to rotate counterclockwise, so that hub 21 can drive fan 22 to rotate counterclockwise.
Example two
Based on the same inventive concept as that of embodiment of the present application, embodiment two of the present application further provides kinds of electronic devices, including:
the electronic component packaging equipment comprises an equipment main body, wherein at least electronic components are arranged in the equipment main body;
a fan unit provided inside the apparatus main body for dissipating heat generated by the at least electronic components, the fan unit including:
a volute;
an impeller disposed within the volute;
the impeller comprises a hub and at least two blades;
the hub is provided with axes, the volute is provided with an air inlet and an air outlet, and air flow can enter the air inlet along the axial direction of the impeller and can flow out of the outlet air along the radial direction of the impeller;
the at least two fan blades are arranged on the hub, wherein an included angle formed by an axial trace of each fan blade in the at least two fan blades in the axial direction and a radial plane perpendicular to the axis is an acute angle.
Be provided with equipment principal and fan unit among above-mentioned electronic equipment, including at least components and parts in the equipment principal, including spiral case and impeller in the fan unit, the impeller sets up in the spiral case, the impeller includes wheel hub and multi-disc flabellum, wherein, wheel hub has axis, the slope of multi-disc flabellum sets up on wheel hub, then, the axial trace that every flabellum formed on the axial direction will be the acute angle with the contained angle that the perpendicular radial plane of wheel hub axis formed, consequently, just can avoid causing the condition of impact from the air current that the air intake of fan both sides got into, and then just can reduce the crest and the crest of noise sound wave, the stack of trough and trough, thereby reduce centrifugal fan's noise, so, just, can reach the purpose of reducing the noise among the centrifugal fan unit, and then the technological effect of the noise among the electronic.
Referring to fig. 5, a structural block diagram of electronic devices provided for this application is that an electronic device 4 includes electronic components 5 and a fan device 6, the number of the electronic components 5 is at least , in practical applications, the number of the electronic components 5 can be selected according to needs, in this embodiment, the number of the electronic components 5 is 50, the fan device 6 includes a volute and an impeller, the impeller is disposed in the volute, in practical applications, the impeller can be fixed in the volute by bolts and threads, of course, the impeller can also be fixed in the volute by other ways without limitation, the volute is further provided with an air inlet and an air outlet, so that an air flow can enter the fan device 6 from the air inlet on the volute, and flow out of the fan device 6 from the air outlet on the volute, the impeller includes a hub and blades, the hub has an axis of rotation, the axis is perpendicular to a plane where the hub is located, in practical applications, the hub can rotate around the axis, the number of the blades is at least two, in this embodiment, the number of the blades is specifically set to 31, and in practical applications, those skilled in this field can set to other numbers such as 2, 20, or 40, etc., as needed.
In a specific practice, the fan blade may be fixed to the hub by an adhesive, or may be integrally formed with the hub by a mold, or may be fixedly disposed on the hub by other manners, in this embodiment, specifically, the fan blade is fixedly disposed on the hub by an adhesive, when the fan blade is fixedly disposed on the hub by an adhesive, the fan blade may form axial traces in the axial direction, where the axial direction is aligned with the direction of the axis, the fan blade and the hub may form radial planes on a plane perpendicular to the axis, and an included angle between the radial plane and the axial trace of the fan blade is an acute angle.
Like this, when wheel hub drives the flabellum rotatory, the air current can follow the axial direction entering air intake of impeller, can follow the radial direction outflow outlet wind of impeller, because the contained angle between the axial trace of radial plane and flabellum is the acute angle, thus, the air current that gets into from the air intake on fan both sides just can not cause the frontal impact, and then just also can the crest and the crest of noise reduction sound wave, the stack of trough and trough, thereby reduce centrifugal fan's noise, so, can effectively solve among the prior art, centrifugal fan device has the technical problem that noise is big, realize reducing the technological effect of the noise among the centrifugal fan device, and then also can realize reducing the technological effect of the noise among the electronic equipment.
In a specific implementation process, an axial trace formed by the fan blade in the axial direction may be an axial trace formed by the inner diameter of the fan blade in the axial direction, or an axial trace formed by the outer diameter of the fan blade in the axial direction, or may also be an axial trace formed by the inner diameter of the fan blade in the axial direction and an axial trace formed by the outer diameter of the fan blade in the axial direction at the same time, specifically, when the axial trace formed by the fan blade in the axial direction is an axial trace formed by the inner diameter of the fan blade in the axial direction, an included angle formed by the axial trace at the inner diameter and a radial plane is an acute angle; specifically, when the axial trace formed by the fan blade in the axial direction is the axial trace formed by the outer diameter of the fan blade in the axial direction, the included angle formed by the axial trace at the outer diameter and the radial plane is an acute angle; specifically, when the axial trace formed by the fan blade in the axial direction is an axial trace formed by the inner diameter of the fan blade in the axial direction and an axial trace formed by the outer diameter of the fan blade in the axial direction, an included angle formed by the axial trace at the inner diameter and the radial plane and an included angle formed by the axial trace at the outer diameter and the radial plane are both acute angles.
Optionally, an axial trace in the axial direction at the outer diameter of each fan blade and/or an axial trace in the axial direction at the inner diameter of each fan blade is an oblique straight line.
Optionally, a radial trace of each fan blade in the radial direction is a curve or a straight line.
Optionally, each fan blade includes th part and second part, th part includes th end and the second end opposite to th end, th end with the second part is connected, the second end sets up on the wheel hub, the contained angle that forms between th part and the second part is the obtuse angle.
Optionally, the fan device 6 further includes a driving structure, the driving structure is connected to the hub, and the driving structure can drive the hub to rotate, so as to drive the at least two blades to rotate.
Optionally, the fan device 6 further includes a reinforcing ring, a th radius of the reinforcing ring is greater than the second radius of the hub, each fan blade includes a third end and a fourth end different from the third end, the third end is fixed to the hub, the fourth end is fixed to the reinforcing ring, and the reinforcing ring and the impeller are integrally disposed in the volute.
The or more technical solutions in the embodiment of the present application have at least the following or more technical effects:
1. the fan device comprises a volute and an impeller, wherein the impeller is arranged in the volute and comprises a hub and at least two blades, the hub is provided with axes, the volute is provided with an air inlet and an air outlet, air flow can enter the air inlet along the axial direction of the impeller and can flow out of outlet air along the radial direction of the impeller, the at least two blades are arranged on the hub, and an axial trace of each blade in the at least two blades in the axial direction and an included angle formed by a radial plane vertical to the axial line are acute angles.
2. In the fan device in the embodiment of the present application, the axial trace in the axial direction at the outer diameter of each fan blade and/or the axial trace in the axial direction at the inner diameter of each fan blade is a curve, and the concave direction of the axial trace is opposite to the rotation direction of each fan blade, that is, in the present application, the axial trace at the outer diameter of the fan blade and/or the axial trace at the inner diameter of the fan blade in the centrifugal fan are set to be concave in the direction opposite to the rotation direction of the fan blade, so that when the fan device is in an operating state, the pressure applied to the middle part of the axial trace by the airflow in the fan device is greater than the pressure applied to the two end parts of the axial trace, which is beneficial to the dust on the fan blade moving from the middle part with large pressure to the two end positions with small pressure and being thrown out along with the airflow from the two ends, therefore, the technical effect of reducing the accumulation of dust on the fan blades is achieved.
Having described preferred embodiments of the invention, further alterations and modifications may be effected to these embodiments by those skilled in the art having the benefit of the basic inventive concepts .
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1, A centrifugal fan assembly comprising:
a volute;
a centrifugal impeller disposed within the volute;
the centrifugal impeller comprises a hub and at least two blades;
the hub is provided with an axis, the volute comprises an air outlet and two air inlets arranged along the axial direction of the centrifugal impeller, and air flow can enter the air inlets along the axial direction of the centrifugal impeller and can flow out of the air outlet along the radial direction of the centrifugal impeller;
the at least two fan blades are arranged on the hub, wherein an included angle formed by an axial trace of each fan blade in the at least two fan blades in the axial direction and a radial plane perpendicular to the axis is an acute angle, and the axial trace in the axial direction at the position of the outer diameter of each fan blade and/or the axial trace in the axial direction at the position of the inner diameter of each fan blade is an oblique straight line.
2. The apparatus of claim 1, wherein an axial trace of each of the at least two leaves in the axial direction forms an acute angle with a radial plane perpendicular to the axis, comprising:
an included angle formed by an axial trace line on the axial direction at the outer diameter of each fan blade and the radial plane is an acute angle; and/or
An included angle formed by an axial trace line in the axial direction at the inner diameter of each fan blade and the radial plane is an acute angle.
3. The device of claim 2, wherein the radial trajectory of each fan blade in the radial direction is curved or straight.
4. The apparatus of claim 3 wherein each of said plurality of vanes includes a th portion and a second portion, said th portion includes a th end and a second end opposite said th end, said th end is connected to said second portion, said second end is disposed on said hub, and said th portion forms an obtuse angle with said second portion.
5. The apparatus of claim 4, wherein the fan apparatus further comprises a driving structure, the driving structure is connected to the hub, and the driving structure is capable of driving the hub to rotate, thereby driving the at least two blades to rotate.
6. The apparatus of claim 5 wherein said fan assembly further comprises a stiffening ring having a th radius greater than said hub second radius, each of said fan blades including a fourth end secured to said stiffening ring, said stiffening ring being disposed integrally with said centrifugal impeller within said volute.
An electronic device of the kind , comprising:
the electronic component packaging equipment comprises an equipment main body, wherein at least electronic components are arranged in the equipment main body;
a centrifugal fan unit provided inside the apparatus main body for dissipating heat generated by the at least electronic components, the fan unit including:
a volute;
a centrifugal impeller disposed within the volute;
the centrifugal impeller comprises a hub and at least two blades;
wherein the hub has an axis of , the volute comprises an air outlet and two air inlets arranged along the axial direction of the centrifugal impeller, and the air flow can enter the air inlets along the axial direction of the centrifugal impeller and can flow out of the air outlet along the radial direction of the centrifugal impeller;
the at least two fan blades are arranged on the hub, wherein an included angle formed by an axial trace of each fan blade in the at least two fan blades in the axial direction and a radial plane perpendicular to the axis is an acute angle, and the axial trace in the axial direction at the position of the outer diameter of each fan blade and/or the axial trace in the axial direction at the position of the inner diameter of each fan blade is an oblique straight line.
8. The electronic device of claim 7, wherein an axial trace of each of the at least two leaves in the axial direction forms an acute angle with a radial plane perpendicular to the axis, comprising:
an included angle formed by an axial trace line on the axial direction at the outer diameter of each fan blade and the radial plane is an acute angle; and/or
An included angle formed by an axial trace line in the axial direction at the inner diameter of each fan blade and the radial plane is an acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845374.8A CN105351219B (en) | 2015-11-26 | 2015-11-26 | fan device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845374.8A CN105351219B (en) | 2015-11-26 | 2015-11-26 | fan device and electronic equipment |
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| CN105351219A CN105351219A (en) | 2016-02-24 |
| CN105351219B true CN105351219B (en) | 2020-01-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106122051A (en) * | 2016-06-14 | 2016-11-16 | 合肥联宝信息技术有限公司 | A kind of fan and notebook computer |
| CN107980613A (en) * | 2017-12-04 | 2018-05-04 | 钱敬乐 | One kind is dusted the adjustable intelligent electric pollination device of covering surface |
| CN108488099B (en) * | 2018-03-28 | 2020-12-18 | 联想(北京)有限公司 | Fan and electronic equipment |
| CN111396371B (en) * | 2020-03-24 | 2021-06-15 | 联想(北京)有限公司 | Fan and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2224083A (en) * | 1988-10-19 | 1990-04-25 | Rolls Royce Plc | Radial or mixed flow bladed rotors |
| CN2725594Y (en) * | 2004-08-30 | 2005-09-14 | 李森墉 | Hight efficiency bisuction type computer fan |
| JP2007247495A (en) * | 2006-03-15 | 2007-09-27 | Matsushita Electric Ind Co Ltd | Centrifugal fan device and electronics provided therewith |
| TWM395067U (en) * | 2010-08-13 | 2010-12-21 | Forcecon Technology Co Ltd | Improved structure of rotor base of heat dissipation fan |
| CN104110401B (en) * | 2013-04-17 | 2016-08-10 | 台达电子工业股份有限公司 | Centrifugal fan |
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