CN111396371B - Fan and electronic equipment - Google Patents
Fan and electronic equipment Download PDFInfo
- Publication number
- CN111396371B CN111396371B CN202010215014.0A CN202010215014A CN111396371B CN 111396371 B CN111396371 B CN 111396371B CN 202010215014 A CN202010215014 A CN 202010215014A CN 111396371 B CN111396371 B CN 111396371B
- Authority
- CN
- China
- Prior art keywords
- fan
- function curve
- rotor
- fan blade
- blades
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
The application discloses a fan and electronic equipment, wherein the fan comprises a rotor, the rotor comprises a plurality of fan blades arranged along the circumferential direction, and the center of gravity of the rotor is coincided with the center of the rotor; wherein, the outer diameters of at least part of the fan blades which are continuously arranged are distributed in a trigonometric function curve in sequence. The outer diameter of the flabellum of this application fan rotor's at least partial continuous arrangement is trigonometric function curve distribution in proper order, so, the flabellum external diameter size that at least part is adjacent is different, when the rotor operation, can reduce two adjacent flabellums and the stack of surrounding air resonance effect to reduce fan noise.
Description
Technical Field
The application relates to the technical field of heat dissipation of electronic equipment, more specifically relates to a fan, and the application still relates to electronic equipment.
Background
Electronic equipment needs dispel the heat through the fan, along with the promotion of electronic equipment consumption, increasingly high to the performance requirement of fan.
The fan adopts a plurality of flabellums of arranging along circumference, and traditional flabellum all adopts the same structure. When the fan operates, the fan blades can be periodically cut with air, so that the resonance effect of two adjacent fan blades and the surrounding air is easily superposed, and the noise of the fan is increased.
In addition, in order to improve the fan quality, the noise intensity of the fan needs to be limited by reducing the running speed of the fan, and the fan performance is affected.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a fan to reduce noise.
Another objective of the present application is to disclose an electronic device having the above fan to reduce noise.
In order to achieve the above purpose, the present application discloses the following technical solutions:
a fan comprising a rotor comprising a plurality of fan blades arranged circumferentially, the centre of gravity of the rotor coinciding with the centre of the rotor;
wherein, the outer diameters of at least part of the fan blades which are continuously arranged are distributed in a trigonometric function curve in sequence;
the rotor comprises a function curve fan blade group and a fine adjustment fan blade group, the outer diameters of fan blades of the function curve fan blade group are distributed in a trigonometric function curve mode in sequence, the outer diameters of fan blades of the fine adjustment fan blade group are located outside the trigonometric function curve, and the center of gravity of the rotor coincides with the center of the rotor through the fine adjustment fan blade group.
Preferably, in the above fan, the fan blade includes at least one pair of blade sets, and two blade sets in each pair of blade sets are symmetrical with respect to the center of the rotor;
the outer diameters of the fan blades continuously arranged in the function curve fan blade group are distributed in a partial trigonometric function curve mode or in a full trigonometric function curve mode in sequence.
Preferably, in the above fan, the fan blades include an even number of identical function curve fan blade groups, and the outer diameters of the fan blades continuously arranged in each function curve fan blade group are sequentially distributed in a partial trigonometric function curve or in a full trigonometric function curve.
Preferably, in the above fan, the number of the function curve fan blade groups is 4, and the outer diameters of the fan blades continuously arranged in each function curve fan blade group are sequentially distributed in a sinusoidal function curve of a quarter cycle.
Preferably, in the above fan, the outer diameter D of the fan blade of the function curve fan blade groupn=DN+ Asin ω xn, where DNX =360 ︒/total number of fan blades, n is the serial number of fan blades in each fan blade group of the function curve, A and omega are constants, and A/DNIs 0.01-0.08.
Preferably, in the fan, two adjacent fan blades have different structures;
the rotor further comprises a reinforcing ring which connects all the fan blades together, and the reinforcing ring is close to the outer rings of the fan blades.
Preferably, in the fan, the fan blades are in a sheet arc shape; the flabellum all is arranged along being on a parallel with the axis of rotation direction of rotor, adjacent two the bending radian of flabellum is different.
Preferably, in the above fan, the included angles between the adjacent two fan blades and the rotation axis of the rotor are different.
As can be seen from the above technical solutions, the fan disclosed in the present application includes a rotor, the rotor includes a plurality of fan blades arranged along a circumferential direction, a center of gravity of the rotor coincides with a center of the rotor; wherein, the outer diameters of at least part of the fan blades which are continuously arranged are distributed in a trigonometric function curve in sequence.
The outer diameter of the flabellum of this application fan rotor's at least partial continuous arrangement is trigonometric function curve distribution in proper order, so, the flabellum external diameter size that at least part is adjacent is different, when the rotor operation, can reduce two adjacent flabellums and the stack of surrounding air resonance effect to reduce fan noise.
The application also discloses electronic equipment, including generating heat the piece and be used for right generate heat a radiating fan, the fan is any kind of fan of aforesaid, because above-mentioned fan has above-mentioned effect, the electronic equipment who has above-mentioned fan has same effect, so the this text is no longer repeated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fan disclosed in an embodiment of the present application;
FIG. 2 is a graph illustrating an outer diameter distribution of fan blades of a fan according to an embodiment of the present disclosure;
fig. 3 is a distribution curve diagram of fan blade outer diameters of the fan disclosed in the second embodiment of the present application.
Detailed Description
The embodiment of the application discloses a fan, which reduces noise.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1-3, a fan disclosed in the embodiments of the present application includes a rotor including a plurality of fan blades 1 arranged along a circumferential direction, a center of gravity of the rotor coinciding with a center of the rotor; wherein, the outer diameters of at least part of the fan blades 1 which are continuously arranged are distributed in a trigonometric function curve in sequence.
The outer diameter of the fan blades 1 which are arranged continuously at least partially of the fan rotor is distributed in a trigonometric function curve mode in sequence, so that the outer diameter of the fan blades 1 which are adjacent at least partially is different in size, and when the rotor runs, superposition of the adjacent two fan blades 1 and the surrounding air resonance effect can be reduced, and therefore fan noise is reduced.
In addition, under the same noise, the rotating speed of the fan can be increased, so that the air quantity of the fan is increased, and the performance of the fan is improved.
It should be noted that the trigonometric function curve may be a sine function curve, a cosine function curve, a tangent function curve or other function curves, and the outer diameter of the regularly arranged fan blades 1 is convenient to select.
In a specific embodiment, the rotor comprises a function curve fan blade group and a fine adjustment fan blade group, the outer diameters of fan blades 1 of the function curve fan blade group are distributed in a trigonometric function curve mode in sequence, the outer diameters of fan blades 1 of the fine adjustment fan blade group are located outside the trigonometric function curve, and the center of gravity of the rotor is coincided with the center of the rotor through the fine adjustment fan blade group.
In this embodiment, the outer diameters of some of the blades 1 arranged continuously on the rotor are distributed in a trigonometric function curve, and the outer diameters of the other blades 1 are located outside the trigonometric function curve; the center of gravity of the rotor coincides with the center of the rotor by finely adjusting the outer diameter of the fan blade 1 located outside the trigonometric function curve.
Alternatively, the rotor of this application also can be all flabellum 1's external diameter and be the distribution of trigonometric function curve in proper order, and make flabellum 1 relative rotor centrosymmetric overall arrangement to guarantee the focus of rotor and the center coincidence of rotor.
In one embodiment, fan blade 1 comprises at least one pair of sets of blades, two sets of blades of each pair of sets of blades being symmetrical with respect to the center of the rotor; the outer diameters of the fan blades 1 continuously arranged in the fan blade group are distributed in a partial trigonometric function curve mode or in a full trigonometric function curve mode in sequence.
In this embodiment, the fan blades 1 of the rotor are divided into fan blade groups arranged in pairs, and each pair of fan blade groups is symmetrical with respect to the center of the rotor, that is, the outer diameters of the two fan blades 1, which are connected with each other through the center of the rotor, in the two fan blade groups of each pair of fan blade groups are the same, so that the center of gravity of the rotor is ensured to coincide with the center.
In this embodiment, each pair of fan blade sets needs to be symmetrical with respect to the center of the rotor, the outer diameters of the fan blades 1 of the two fan blade sets of each pair of fan blade sets are distributed by using the same trigonometric function curve, and each fan blade set may be a trigonometric function curve of one period, or a trigonometric function curve of a half period, a quarter period, or other periods.
The fan blade groups arranged in pairs can be the same or different from each other.
In order to further simplify the structure, the fan blades 1 include an even number of identical fan blade groups, and the outer diameters of the fan blades 1 continuously arranged in each fan blade group are distributed in turn in a partial trigonometric function curve or in a full trigonometric function curve.
In this embodiment, the fan blades 1 of the rotor are divided into an even number of identical fan blade groups, the fan blade groups are symmetrical relative to the center of the rotor, and the outer diameters of the two fan blades 1 which can be connected to pass through the center of the rotor are identical, so that the center of gravity of the rotor is ensured to be coincident with the center.
In this embodiment, only one size of the fan blade group needs to be processed, and the fan blade group may be a trigonometric function curve of one period, or a trigonometric function curve of a half period, a quarter period, or other periods, so that the processing is convenient.
Of course, the number of the fan blade sets may be an odd number, and the center of gravity of the rotor may be aligned with the center of the rotor by fine adjustment of the fan blade sets.
As shown in fig. 3, there are 4 fan blade groups, and the outer diameters of the fan blades 1 arranged in series in each fan blade group are distributed in a sine function curve of a quarter cycle in sequence. Therefore, the distribution curves of the outer diameters of all the fan blades 1 distributed in the circumferential direction are formed by connecting sine function curves of a quarter cycle, and the processing and layout are convenient. Alternatively, the number of the fan blade groups can be other even numbers, such as 2, 6, etc.
In order to conveniently take the outer diameter of the fan blade 1, preferably, the outer diameter D of the fan blade 1n=DN+ Asin ω xn, where DNX =360 ︒/total number of fan blades 1, n is the serial number of fan blade 1 in each fan blade group, a and ω are constants, and a/D isNIs 0.01-0.08.
In a specific embodiment, as shown in fig. 2, N is a serial number of the fan blade 1 arranged along the circumferential direction, in this embodiment, the outer diameters of all the fan blades 1 distributed along the circumferential direction are distributed along a sine function curve of one cycle, i.e., 360 °, to form a fan blade group, and the serial number N of the whole fan blade 1 is the serial number N of the fan blade 1 in the fan blade group.
Reference outer diameter D of fan blade 1NFor example, a fan with 47mm and fan blades 1 having a total number of 40 is taken as an example, a and ω are taken as 1, different outer diameters of the fan blades 1 are selected in a sine function mode, according to a calculation formula 47+ sinxn, it is preset that the outer diameters of each adjacent fan blade 1 are different, and the total serial number N of the rotor fan blade 1 is:
1）47.16mm、2）47.31mm、3）47.45mm、4）47.59mm、5）47.71mm、6）47.81mm、7）47.89mm、8）47.95mm、9）47.99mm、10）48mm；
11）47.99mm、12）47.95mm、13）47.89mm、14）47.81mm、15）47.71mm、16）47.59mm、17）47.45mm、18）47.31mm、19）47.16mm、20）47mm；
21）46.84mm、22）46.69mm、23）46.55mm、24）46.41 mm、25）46.29 mm、26）46.19 mm、27）46.11 mm、28）46.05mm、29）46.01 mm、30）46mm；
31）46.01 mm、32）46.05mm、33）46.11 mm、34）46.19 mm、35）46.29 mm、36）46.41 mm、37）46.55mm、38）46.69mm、39）46.84mm、40）47mm。
then, calculating a gravity center point of the fan blade 1 according to the Pro/E design model, wherein the gravity center point is required to be at the center of the fan blade 1; if there is a deviation (the gravity center point of the fan blade 1 is deviated to one side of the center of the fan blade 1, for convenience of description, the gravity center point is simply referred to as the gravity center point), the outer diameter of the individual fan blade 1 is finely adjusted, during fine adjustment, the outer diameter of the fan blade 1 on the same side as the gravity center point can be reduced, or the outer diameter of the fan blade 1 on the opposite side of the gravity center point can be increased, and the adjusted outer diameter of the fan blade 1 is located outside the sine function curve and is used as a fine adjustment fan blade group.
In another specific embodiment, as shown in fig. 3, N is a serial number of fan blade 1 arranged along the circumferential direction, the rotor is equally divided into 4 fan blade groups, the serial number N of the fan blade 1 in each fan blade group is from 1 to N/4, and the outer diameters of N fan blades 1 continuously arranged in each fan blade group are sequentially distributed in a sine function curve of a quarter cycle.
Reference outer diameter D of fan blade 1NFor 46mm, the fan that flabellum 1 total number is 40 is taken as an example, A, omega value are 1, adopt the mode of sinusoidal function to select different flabellum 1 external diameters, according to calculation formula 46+ sinxn, 4 fan blade groups that relative rotor central symmetry arranged, every adjacent flabellum 1 external diameter all is inequality, is respectively according to rotor flabellum 1 total serial number N:
1）46.16mm、2）46.31mm、3）46.45mm、4）46.59mm、5）46.71mm、6）46.81mm、7）46.89mm、8）46.95mm、9）46.99mm、10）47mm；
11）46.16mm、12）46.31mm、13）46.45mm、14）46.59mm、15）46.71mm、16）46.81mm、17）46.89mm、18）46.95mm、19）46.99mm、20）47mm；
21）46.16mm、22）46.31mm、23）46.45mm、24）46.59 mm、25）46.71 mm、26）46.81mm、27）46.89mm、28）46.95mm、29）46.99mm、30）47mm；
31）46.16mm、32）46.31mm、33）46.45 mm、34）46.59 mm、35）46.71mm、36）46.81mm、37）46.89mm、38）46.95mm、39）46.99mm、40）47mm。
the 4 fan blade groups are symmetrically arranged relative to the center of the rotor, so that the gravity center point of the fan blade 1 is ensured to be at the center of the fan blade 1.
In the two embodiments, A/DNRespectively 0.021 and 0.022, can guarantee the noise reduction simultaneously, guarantee the amount of wind of flabellum 1.
According to the actual use requirement, the reference outer diameter D of the fan blade 1NOther values, such as 30mm, 50mm, etc., are also possible; the total number of the fan blades 1 can be other numbers, such as 30,50, etc. A represents the amplitude of the sine function curve, ω represents the expansion and contraction of the sine function curve along the transverse coordinate, for convenience, both A and ω have a value of 1, and of course, other values may be used for both A and ω, for example, A is 1/2 or 2, and ω is 1/2 or 2, which is not specifically limited in this application.
The outer diameter of the fan blade 1 of the present application is distributed along a sine function curve, of course, DnMay also be DN+ Acos ω xn; may also be DN+ Atanxn to realize the same effect that the outer diameter of fan blade 1 distributes along the trigonometric function curve, and this application is no longer repeated here.
In order to further reduce noise, the structures of two adjacent blades 1 are different. The structure of the fan blade 1 includes the shape configuration of the fan blade 1. In this embodiment, the outer diameters of the adjacent blades 1 are different, and the structures of the two adjacent blades 1 are different, so that the superposition of the resonance effect between the two adjacent blades 1 and the surrounding air is further reduced when the rotor operates.
In order to improve the working stability of the rotor, the rotor also comprises a reinforcing ring 2 which connects all the fan blades 1 together, and the reinforcing ring 2 is close to the outer rings of the fan blades 1. This application utilizes the beaded finish 2 to link together all flabellum 1 outer lanes, can prevent rocking that flabellum 1 takes place at the rotation in-process, has further reduced the noise, has guaranteed the amount of wind simultaneously.
Preferably, the fan blade 1 is in a sheet arc shape; the flabellum 1 all arranges along the axis of rotation direction that is on a parallel with the rotor, and the crooked radian of two adjacent flabellums 1 is different. In the embodiment, the radian of the sheet arcs is different, so that the structure of the fan blade 1 is different; all flabellum 1 all along the rotation axis direction air-out of rotor. Of course, the fan blade 1 may be flat plate-shaped.
In another embodiment, the angles between two adjacent fan blades 1 and the rotation axis of the rotor are different. In this embodiment, the air-out angle of flabellum 1 has the contained angle with the axis of rotation of rotor, and the air-out angle through adjacent flabellum 1 is different, reduces the stack of two adjacent flabellums 1 and the air resonance effect on every side when the rotor operates, has further reduced the noise.
When the fan operates, the fan blades 1 with the same outer diameter can be periodically cut with air, so that the fan blades are easily superposed with the resonance effect of the surrounding air, the fan blades 1 with different outer diameters can just break the superposition, and the corresponding noise peak values of certain frequencies are reduced, so that the overall noise of the fan is improved.
From the test data, compared with the fan blade 1 with the same outer diameter, the fan blade 1 adopted by the fan has the advantages that the rotating speed is increased and the fan performance is further improved by 5% under the same noise; at the same speed, the noise of the fan is reduced by 2.1 dBA.
The embodiment of the application also discloses electronic equipment, which comprises a heating part and a fan used for radiating heat of the heating part, wherein the fan is the fan provided by any one of the embodiments, so that the noise is reduced.
The electronic equipment can be a notebook computer, a tablet computer, a projector or other electronic products needing heat dissipation, and is particularly suitable for the notebook computer of the game machine.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A fan comprising a rotor comprising a plurality of fan blades arranged circumferentially, the centre of gravity of the rotor coinciding with the centre of the rotor;
wherein, the outer diameters of at least part of the fan blades which are continuously arranged are distributed in a trigonometric function curve in sequence;
the rotor comprises a function curve fan blade group and a fine adjustment fan blade group, the outer diameters of fan blades of the function curve fan blade group are distributed in a trigonometric function curve mode in sequence, the outer diameters of fan blades of the fine adjustment fan blade group are located outside the trigonometric function curve, and the center of gravity of the rotor coincides with the center of the rotor through the fine adjustment fan blade group.
2. The fan of claim 1, the fan blade comprising at least one pair of sets of blades, two sets of blades of each pair of sets of blades being symmetrical with respect to a center of the rotor;
the outer diameters of the fan blades continuously arranged in the function curve fan blade group are distributed in a partial trigonometric function curve mode or in a full trigonometric function curve mode in sequence.
3. The fan as claimed in claim 1, wherein the fan blades comprise an even number of identical function curve fan blade groups, and the outer diameters of the fan blades arranged in series in each function curve fan blade group are sequentially distributed in a partial trigonometric function curve or in a full trigonometric function curve.
4. The fan as claimed in claim 3, wherein the number of the function curve fan blade sets is 4, and the outer diameters of the fan blades arranged in series in each function curve fan blade set are distributed in a sine function curve of a quarter cycle in sequence.
5. The fan as claimed in any one of claims 1 to 4, wherein the outer diameter D of the fan blade of the function curve fan blade groupn=DN+ Asin ω xn, where DNX =360 ︒/total number of fan blades, n is the serial number of fan blades in each fan blade group of the function curve, A and omega are constants, and A/DNIs 0.01-0.08.
6. The fan as claimed in claim 1, wherein the adjacent two of the fan blades have different structures;
the rotor further comprises a reinforcing ring which connects all the fan blades together, and the reinforcing ring is close to the outer rings of the fan blades.
7. The fan of claim 1, said fan blades being in the shape of a sheet arc; the flabellum all is arranged along being on a parallel with the axis of rotation direction of rotor, adjacent two the bending radian of flabellum is different.
8. The fan as claimed in claim 1, wherein the angles between the adjacent two of the fan blades and the rotation axis of the rotor are different.
9. An electronic apparatus comprising a heat generating member and a fan for dissipating heat from the heat generating member, the fan being as defined in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010215014.0A CN111396371B (en) | 2020-03-24 | 2020-03-24 | Fan and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010215014.0A CN111396371B (en) | 2020-03-24 | 2020-03-24 | Fan and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111396371A CN111396371A (en) | 2020-07-10 |
| CN111396371B true CN111396371B (en) | 2021-06-15 |
Family
ID=71434542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010215014.0A Active CN111396371B (en) | 2020-03-24 | 2020-03-24 | Fan and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111396371B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007130B (en) * | 2021-03-22 | 2023-07-21 | 联想(北京)有限公司 | Fan body and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351219A (en) * | 2015-11-26 | 2016-02-24 | 联想(北京)有限公司 | Fan device and electronic device |
| CN206943083U (en) * | 2017-03-31 | 2018-01-30 | 中达电子零组件(吴江)有限公司 | Centrifugal fan and its impeller |
| CN208185055U (en) * | 2018-05-23 | 2018-12-04 | 奇鋐科技股份有限公司 | Fan wheel structure |
| CN110685956A (en) * | 2019-10-30 | 2020-01-14 | 太仓市华盈电子材料有限公司 | Fan blade with unequal outer diameters |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10422350B2 (en) * | 2015-07-02 | 2019-09-24 | Apple Inc. | Fan having a blade assembly with different chord lengths |
-
2020
- 2020-03-24 CN CN202010215014.0A patent/CN111396371B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351219A (en) * | 2015-11-26 | 2016-02-24 | 联想(北京)有限公司 | Fan device and electronic device |
| CN206943083U (en) * | 2017-03-31 | 2018-01-30 | 中达电子零组件(吴江)有限公司 | Centrifugal fan and its impeller |
| CN208185055U (en) * | 2018-05-23 | 2018-12-04 | 奇鋐科技股份有限公司 | Fan wheel structure |
| CN110685956A (en) * | 2019-10-30 | 2020-01-14 | 太仓市华盈电子材料有限公司 | Fan blade with unequal outer diameters |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111396371A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111396371B (en) | Fan and electronic equipment | |
| CN102297155B (en) | Fan, mold for forming and fluid delivery system | |
| US3253649A (en) | Apparatus for generating heated air | |
| CN103824822B (en) | Radiator and radiator fan | |
| US8596968B2 (en) | Diffuser for a compressor | |
| BR112012030757B1 (en) | Pulley and method of building a pulley with low noise | |
| CN106015040A (en) | Propeller fan, fluid sending device, electric fan, and mold for molding | |
| JP5318709B2 (en) | Screw element piece and screw | |
| CN103195749B (en) | A kind of centrifugation blade, centrifugal blower and internal machine of air-conditioner | |
| CN107906046A (en) | A kind of blast fan | |
| CN205349840U (en) | Low pulse impeller | |
| US2468723A (en) | Axial flow fan | |
| CN103161755B (en) | Industrial blower impeller | |
| CN105591478A (en) | Rotor lamination | |
| CN204783835U (en) | Modular flabellum | |
| CN215890895U (en) | Bent beam arm plate spring, elastic supporting piece and compressor | |
| TWI711763B (en) | Centrifugal fan | |
| US20030231961A1 (en) | Cylindrical blades for axial steam turbines | |
| CN104011397B (en) | Fan, mold for forming and fluid delivery system | |
| TW202010945A (en) | Centrifugal fan characterized in that the purpose of avoiding the occurrence of resonance frequency can be achieved with a relatively simple design, thereby effectively reducing the noise during operation | |
| JP2014517217A (en) | Method for diffusing a gas turbine compression stage and diffusion stage implementing the same | |
| US11512709B2 (en) | Propeller fan | |
| US20140356171A1 (en) | Rotor for a centrifugal fan, particularly for the forced circulation of air in convention cooking ovens | |
| CN208702772U (en) | A kind of axial wheel | |
| CN215171054U (en) | Centrifugal fan and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |