CN115306762A - Fan with cooling device - Google Patents
Fan with cooling device Download PDFInfo
- Publication number
- CN115306762A CN115306762A CN202211143173.XA CN202211143173A CN115306762A CN 115306762 A CN115306762 A CN 115306762A CN 202211143173 A CN202211143173 A CN 202211143173A CN 115306762 A CN115306762 A CN 115306762A
- Authority
- CN
- China
- Prior art keywords
- fan
- connecting part
- insert
- fan blade
- fixing hole
- 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.)
- Pending
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- 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 invention relates to a fan, which comprises a central disc and fan blades arranged on the central disc in the circumferential direction, wherein the root parts of the fan blades are provided with connecting parts; the ring-cut section of the connecting part is dumbbell-shaped, the front end of the fan blade is connected with the front end of the connecting part, and the connecting position is positioned on one side of the connecting part; the rear end of the fan blade is connected with the rear end of the connecting part, and the connecting position is positioned on the other side of the connecting part; an angle ranging from-15 degrees to +15 degrees is formed between the long axis of the connecting part and the insert. According to the fan provided by the invention, when the fan blades are molded, the angle adjusting range of the connecting part and the insert is freely selected from-15 degrees to +15 degrees, so that the requirements of the fan blades with various angles are met.
Description
Technical Field
The invention relates to a cooling system core component fan adopting a diesel engine, which is also suitable for a new energy heat management core component and an industrial ventilation fan, in particular to a fan structure.
Background
Under the background of continuous upgrading of emission standards in the automobile industry, aiming at the increasingly high heat dissipation requirements of equipment such as engineering machinery, commercial vehicles and generator sets, how to further improve the heat dissipation efficiency of the fan and give consideration to the energy-saving and noise-reducing effects is a topic of key research. The traditional fan is generally limited by the structure that more fan blades need to output larger air volume, but the multi-fan-blade fan needs more power when rotating due to self-weight, and the problem that the fan generates noise when rotating at high speed is also needed to be solved, so people research the fan blade structure with larger air volume, low power consumption and noise according to hydrodynamics. Along with diversified mechanical equipment replaces artificial condition more and more generally, different equipment appear the demand of differentiation to the quantity, angle and the size of flabellum, and how to satisfy the implementation of multi-angle flabellum through modular design is the important index of embodying the product advantage, is favorable to improving production efficiency greatly, realizes the quick supply of material of many specifications, small batch.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides a fan to solve the above problems.
In order to achieve the above object, the present invention provides a technical solution as follows:
a fan comprises a central disc and fan blades arranged on the central disc in the circumferential direction, wherein connecting parts are arranged at the roots of the fan blades, an insert is arranged between the connecting parts and the central disc, one end of the insert is connected with the connecting parts, and the other end of the insert is connected with the central disc; the ring-cut section of the connecting part is dumbbell-shaped, the front end of the fan blade is connected with the front end of the connecting part, and the connecting position is positioned on one side of the connecting part; the rear end of the fan blade is connected with the rear end of the connecting part, and the connecting position is positioned on the other side of the connecting part; an angle ranging from minus 15 degrees to plus 15 degrees is formed between the long shaft of the connecting part and the insert.
Preferably, the fan blade, the connecting portion and the insert are integrally formed.
Preferably, the insert is in the shape of a sheet or other irregular shape.
Preferably, the position where the front end of the connecting part is connected with the fan blade extends outwards to form a first extending part; the rear end of the connecting part is connected with the fan blades, the rear end of the connecting part extends outwards to form a second extending part, and the first extending part and the second extending part are connected to form an integrally-formed extending part; one end of the extending part, which is not connected with the connecting part, is connected with the fan blade into a whole; the positions of the extending parts connected with the fan blades are in smooth transition, and the positions of the extending parts connected with the connecting parts are in smooth transition.
Preferably, the middle part of the central disc protrudes to one side to form a central disc boss.
Preferably, a first fixing hole is formed in one end, which is not connected with the connecting part, of the insert;
and a second fixing hole matched with the first fixing hole is formed in the central disc, and a fastener penetrates through the first fixing hole and the second fixing hole.
Preferably, the thickness of the circular section of the fan blade in the rotation direction is gradually reduced from the middle position to the two side positions.
Preferably, a projection profile of the fan blade in a normal direction of the insert is a front swept profile.
According to the fan provided by the invention, the connecting part is arranged at the root part of the fan blade, and the connecting part is arranged in the ring-cut cross section shape of a dumbbell, so that an angle range of-15 degrees to +15 degrees can be formed between the insert and the connecting part when the fan blade is formed, the firmness of the connection between the connecting part and the insert is kept, the angle adjusting range of the insert and the connecting part can be freely selected from-15 degrees to +15 degrees when the fan blade is formed, and the requirements of the fan blades with various angles are met.
Drawings
Fig. 1 is a schematic view showing an overall structure of a fan in the embodiment;
FIG. 2 shows an exploded view of one of the fans of FIG. 1;
FIG. 3 is a schematic view of a fan blade according to an embodiment;
FIG. 4 is a schematic view of a fan blade according to an embodiment;
FIG. 5 is a schematic view showing a rotation state of a fan blade;
FIG. 6 is a schematic view illustrating a stress state of the fan blade in FIG. 5;
reference numbers in the drawings:
the fan comprises a central disc 1, a central disc boss 1-1, a second fixing hole 1-2, fan blades 2, a connecting part 3, a first extending part 3-1, a second extending part 3-2, an insert 4, a first fixing hole 4-1 and a fastener 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the embodiment, please refer to fig. 1 to 5, an embodiment of the present application provides a fan, including a central disc 1 and fan blades 2 circumferentially arranged on the central disc, a connecting portion 3 is arranged at a root of each fan blade, an insert 4 is arranged between the connecting portion and the central disc, one end of the insert is connected to the connecting portion, and the other end of the insert is connected to the central disc, in this embodiment, the insert is integrally formed with the fan blades and the connecting portion, and the insert is in a sheet shape or other irregular shape; the ring-cut section of the connecting part is dumbbell-shaped, wherein the dumbbell-shaped section is narrow in the middle and wide at two ends, the front end 2A of the fan blade is connected with the front end 3A of the connecting part, and the connecting position is positioned on one side of the connecting part; the rear end 2B of the fan blade is connected with the rear end 3B of the connecting part, the connecting position is positioned at the other side of the connecting part, and the front end of the fan blade is one end of the windward side when the fan rotates; an angle d ranging from-15 degrees to +15 degrees is formed between the long axis c of the connecting part and the insert, wherein the long axis of the connecting part refers to a symmetry axis of the connecting part in the length direction.
According to the fan, the connecting part is arranged at the root part of the fan blade, and the connecting part is arranged in the dumbbell-shaped circular section, so that when the fan blade is molded, an angle range of-15 degrees to +15 degrees can be formed between the insert and the connecting part, the firmness of the connection between the connecting part and the insert is kept, the angle adjusting range of the connecting part and the insert can be freely selected from-15 degrees to +15 degrees when the fan blade is molded, and the requirements of the fan blades with various angles are met.
In one embodiment, the position where the front end of the connecting part is connected with the fan blade extends outwards to form a first extending part 3-1; the rear end of the connecting part is connected with the fan blades, the position of the rear end of the connecting part extends outwards to form a second extending part 3-2, and the first extending part and the second extending part are connected to form an integrally-formed extending part; one end of the extending part, which is not connected with the connecting part, is connected with the fan blade into a whole; the positions of the extending parts connected with the fan blades are in smooth transition, and the positions of the extending parts connected with the connecting parts are in smooth transition; the middle part of the central disc protrudes towards one side to form a central disc boss 1-1.
This structure, through setting up the extension, the position that the front end and the rear end of flabellum are connected with connecting portion is located the different sides of connecting portion, refers to fig. 4 for the whole transition district that can neglect of flabellum, only includes workspace a and installing zone b, thereby has further increased workspace a, has reduced the loss of air volume that the transition district brought, has reduced the noise that the loss of air volume produced, reaches the purpose of making an uproar. (ii) a The arrangement of the central disk boss provides a space for the arrangement of the extension part; in addition, the boss is arranged to adjust the relative position between the fan and the engine of the main engine, and the adjusting cushion block is saved.
In one embodiment, the system comprises; a first fixing hole 4-1 is formed in one end, which is not connected with the connecting part, of the insert; the central disc is provided with a second fixing hole 1-2 matched with the first fixing hole, and the first fixing hole and the second fixing hole are provided with a fastener 5 in a penetrating way, namely the central disc and the insert are fixed through the fastener, wherein the fastener can be a bolt or a rivet and the like; the flabellum uses the nylon materials preparation, during the preparation with the pre-buried setting of mold insert can in addition, the dumbbell shape setting of connecting portion reserves enough space for the angle setting of the relative connecting portion of mold insert to the joint strength of mold insert and flabellum has been improved.
In one embodiment, the thickness of the circular section of the fan blade in the rotating direction is gradually reduced from the middle position to two side positions; the projection profile of the fan blade in the normal direction of the insert is a front sweeping shape, in the embodiment, the front sweeping shape refers to the front end Cheng Huxing of the fan blade, the arc opening direction is the same as the rotation direction of the fan blade, and the front sweeping shape can reduce the noise generated by the fan under the working condition of the fan; the following is a comparison table of the noise reduction effect of the present front sweep fan (austria fan) and other competitive products fans:
the thickness of the circular section of the fan blade in the rotating direction is gradually reduced from the middle position to the two side positions, so that the deformation of the fan blade generated by the bending moment of the front swept area of the fan blade relative to the root part of the fan blade during rotation can be effectively counteracted or weakened, and the principle is as follows:
as shown in fig. 5, the area of the region a1 of the fan blade operating region is smaller than the area of the region a 2.
When the fan blade rotates, the concave surface of the fan blade is subjected to the pressure of flowing air along the normal direction of the curved surface, and the direction is shown as figure 6. Wherein the pressure (unit N) borne by the fan blade area a1 is F1, and the pressure (unit N) borne by the fan blade area a2 is F2; the pressure (N) on the region with large area is large because the air pressure (unit Pa) on the concave side of the fan blade is the same.
F= P*S
F is the force loaded on the contact area, N;
p is pressure, pa;
s: contact area, m2;
therefore, F2 is greater than F1, and the torque M is formed on the central axis of the fan blade relative to the blade mounting point O by the pressure converted from the pressure on the area of the fan blade area a2 which is more than the area of the area a 1.
In order to counteract or weaken the influence (mainly deformation and strength) of the bending moment M on the front swept area of the fan blade, the thickness from the central axis area of the working area of the fan blade to the direction opposite to the sweeping direction and the sweeping direction is set to be thinner and thicker.
In actual production, specific fan assembly requirements for meeting fan performance (air volume, static pressure and power consumption), diameter and blade number can be designed according to various application requirements by changing the diameter of the central disc and matching with blades with different angles, blades with different lengths and blade numbers; the central disc can be selected in a targeted manner through specific application working conditions, can be in a flat plate form or a stamping form with a boss, can flexibly meet the axial requirements of different application working conditions on the fan assembly, saves a central cushion block in the traditional fan form, and achieves the purposes of reducing the weight of the fan assembly and saving the cost.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
It should be readily understood that "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest manner such that "on … …" means not only "directly on something", but also "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above" or "above" something, but also the meaning of "above" or "above" without intermediate features or layers therebetween (i.e., directly on something).
Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A fan comprises a central disk (1) and fan blades (2) arranged on the central disk in the circumferential direction,
the root of the fan blade is provided with a connecting part (3), an insert (4) is arranged between the connecting part and the central disc, one end of the insert is connected with the connecting part, and the other end of the insert is connected with the central disc;
the ring-cut section of the connecting part is dumbbell-shaped, the front end of the fan blade is connected with the front end of the connecting part, and the connecting position is positioned on one side of the connecting part; the rear end of the fan blade is connected with the rear end of the connecting part, and the connecting position is positioned on the other side of the connecting part;
an angle ranging from-15 degrees to +15 degrees is formed between the long axis of the connecting part and the insert.
2. The fan of claim 1 wherein said fan blades, said connecting portion and said insert are integrally formed.
3. The fan as claimed in claim 1, wherein the insert is shaped as a sheet or other irregular shape.
4. The fan as claimed in claim 1, wherein the front end of the connecting portion is extended outward to form a first extension portion (3-1);
the rear end of the connecting part is connected with the fan blades, the position of the rear end of the connecting part extends outwards to form a second extending part (3-2), and the first extending part and the second extending part are connected to form an integrally-formed extending part;
one end of the extending part, which is not connected with the connecting part, is connected with the fan blade into a whole;
the positions of the extending parts connected with the fan blades are in smooth transition, and the positions of the extending parts connected with the connecting parts are in smooth transition.
5. A fan according to claim 1, characterized in that the central part of the central disk is convex to one side to form a central disk boss (1-1).
6. A fan according to claim 1, wherein the end of the insert not connected to the connecting portion is provided with a first fixing hole (4-1);
and a second fixing hole (1-2) matched with the first fixing hole is formed in the central disc, and a fastener (5) penetrates through the first fixing hole and the second fixing hole.
7. The fan as claimed in any one of claims 1 to 6, wherein the thickness of the circular cross section of the fan blades in the rotational direction becomes gradually thinner from the middle position to the both side positions.
8. The fan as claimed in claim 7, wherein the fan blade has a forward swept profile in a projection profile normal to the insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211143173.XA CN115306762A (en) | 2022-09-20 | 2022-09-20 | Fan with cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211143173.XA CN115306762A (en) | 2022-09-20 | 2022-09-20 | Fan with cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115306762A true CN115306762A (en) | 2022-11-08 |
Family
ID=83866035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211143173.XA Pending CN115306762A (en) | 2022-09-20 | 2022-09-20 | Fan with cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115306762A (en) |
-
2022
- 2022-09-20 CN CN202211143173.XA patent/CN115306762A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110094460A1 (en) | Partial ring cooling fan | |
| US20050186070A1 (en) | Fan assembly and method | |
| EP2545284B1 (en) | Skewed axial fan assembly | |
| US6082969A (en) | Quiet compact radiator cooling fan | |
| CN111779707B (en) | Equal-thickness sweepback axial flow blade and axial flow fan | |
| CN2581734Y (en) | Fan vane for air conditioner | |
| US20110014052A1 (en) | Fan with structural support ring | |
| CN113464497A (en) | Diffuser, compressor and air cycle machine | |
| CN218407906U (en) | Fan with cooling device | |
| US20040067136A1 (en) | Airfoil assembly | |
| CN115306762A (en) | Fan with cooling device | |
| CN211525182U (en) | Swept-curved blade and axial flow fan | |
| US4790720A (en) | Leading edges for diffuser blades | |
| KR0159521B1 (en) | Fan mounted resistance plate of down flow | |
| CN201326573Y (en) | High-efficiency and low-noise axial-flow ventilator of textile air conditioner | |
| CN100419273C (en) | Blower impeller | |
| KR200314840Y1 (en) | Low noise type fan | |
| CN115419613B (en) | Special-shaped combined blade low-noise high-efficiency fan | |
| KR20080004099A (en) | Noise reduction a propeller fan | |
| CN216199232U (en) | Fan rotor and air cycle machine | |
| CN213511350U (en) | Axial flow wind wheel and air conditioner | |
| CN211039097U (en) | Fan with tooth-shaped fan blades | |
| CN2310889Y (en) | Centrifugal forward and rearward impeller with subcritical leaf | |
| CN102562662A (en) | Axial flow wind wheel | |
| CN219012971U (en) | Wave-type multi-wing curved surface fan |
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 |