CN201027678Y - Diagonal flow fan - Google Patents
Diagonal flow fan Download PDFInfo
- Publication number
- CN201027678Y CN201027678Y CNU2007200032544U CN200720003254U CN201027678Y CN 201027678 Y CN201027678 Y CN 201027678Y CN U2007200032544 U CNU2007200032544 U CN U2007200032544U CN 200720003254 U CN200720003254 U CN 200720003254U CN 201027678 Y CN201027678 Y CN 201027678Y
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- fan
- drainage body
- diagonal flow
- air outlet
- diagonal
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- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000013461 design Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 241000883990 Flabellum Species 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009183 running Effects 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention provides an innovative diagonal flow fan which can be manufactured by mold ejection mass production, the fan comprises a funnel-shaped shell, a diagonal flow impeller driven by a motor and a fixing frame, and an air inlet with a smaller diameter and an air outlet with a larger diameter are formed, wherein the top of the center of the diagonal flow impeller is provided with a hub part which is connected with a plurality of inclined fan blades which are arranged in a radial manner and extend and expand outwards towards the direction of the air outlet; the fixing frame is provided with a conical drainage body which expands from the air inlet to the air outlet; by means of the inclined flow channel, an inclined flow channel which is flared from the air inlet to the air outlet is formed between the inner inclined surface of the shell and the outer inclined surface of the drainage body, so that the characteristics of the inclined flow type fan are formed; the novel flow guide vane wheel is mainly characterized in that the inclined flow type vane wheel and the flow guide body can be manufactured respectively, so that the mould can be produced in mass production; in addition, the design that the motor is placed in the drainage body can make the fan be miniaturized, and the fan has the advantages of medium air volume and medium air pressure and can improve the heat dissipation efficiency of the fan.
Description
Technical field
The utility model relates to a kind of mixed flow fan.
Background technique
At present general fan is crossed the direction of blade according to air communication and can generally be divided into two kinds of axial flow fan and centrifugal fans, wherein, the structure of axial flow fan please be shown in Figure 1, its air-flow is the wheel axle direction inflow along impeller, and directly flows out by edge wheel axle direction behind the blade, so when flabellum rotates, the flabellum above and below forms suction face respectively and pressure side drives air flows, so pressure is less, but because of active area is big, has high flow and have the characteristic of high air quantity, low blast; The structure of centrifugal fan then as shown in Figure 2, its airflow direction then is the wheel axle direction inflow along impeller, to vertically flowing out after the radiation around the wheel shaft, it mainly is to utilize centrifugal effect to come pressure fluid, has the characteristic of low air quantity, high peak pressure so can produce higher pressure again.Only, study intensively the experience accumulation of fan correlation technique for a long time finds through we inventor, though above-mentioned two kinds of fans have the characteristic of high air quantity, low blast and low air quantity, high blast respectively, so have some problems that can't overcome in fact also simultaneously, do a detailed description now hereinafter:
1, axial flow fan had high air quantity and can transmit the advantage of mass air flow in the unit time, yet the serious disappearance that the noise that but has operation process simultaneously is too big, and described noise will have a strong impact on using character (the noise effect using character that is produced with the special-purpose radiation fan of electronic equipments such as computer is the most serious especially).
Though 2, centrifugal fan has the less advantage of noise relatively because air quantity is lower, yet has the air flow rate deficiency relatively, cause the not good problem of radiating effect.
Because above-mentioned two kinds of conventional fan in fact respectively have its pluses and minuses to exist, and on practice is used, what radiation system needed is the system of middle air quantity/middle blast, therefore had the structure of installing stator on axial flow fan to come out afterwards then, expectation relies on this innovative design and can eliminate above-mentioned shortcoming and reach the optimum efficiency that has middle air quantity/middle blast concurrently; But find its actual radiating efficiency and be not so good as expection through follow-up study.
Moreover, except that above-mentioned two kinds of conventional fan structures, we inventor notices that also existing on the market at present diagonal flow type pump exists, see also shown in Figure 3, tradition diagonal flow type pump is a utilization diagonal flow type impeller and with axial flow and centrifugal characteristic, and then can be used on the fan structure, yet, because traditional diagonal flow type wheel bottom moulding non-planar surface, adding blade is the curve form that is crooked, therefore can't process with 3 axis processing machines, and must process with the 4-5 axis processing machine, and again can be after machining because being subject to the shape cause can't the demoulding, therefore can't produce in a large number with injection molding method, cause the high and problem that can't extensively use of manufacture cost relatively.In addition, the drive motor of traditional diagonal flow type pump all is arranged on the pump outside, therefore has bulky puzzlement simultaneously.
In view of this, we inventor relies on it to be engaged in the experience that produces of relevant industries for many years, is sprout to think the model utility improvement, and the phase can be designed a kind of fan structure that improves existing disappearance, and through long-term research and development experiment and test back beginning this novel appearance is being arranged.
Summary of the invention
This novel purpose is: a kind of mixed flow fan is provided, characteristics with axial flow fan and centrifugal fan, have middle air quantity and middle blast double grading, and can significantly promote the fan radiating efficiency, but the while is with the characteristics of model volume production and volume exquisiteness.
Show purpose for reaching, a kind of mixed flow fan of the special design of the inventor, described fan comprises a diagonal flow type impeller and the fixing frame that a shell, is subjected to the motor transmission at least, and be formed with an intake grill and an exhaust outlet, it is characterized in that: described shell is to be the funnel-like housing of intake grill bore less than the exhaust outlet bore; Diagonal flow type impeller center of top tool one hub portion, hub portion is positioned at intake grill one side of shell, several pieces inclination flabellums that are radial arrangement and extend and expand outwardly towards the exhaust outlet direction of shell of the peripheral binding of hub portion; Fixing frame tool one is by the taper drainage body of intake grill towards exhaust outlet direction expansion, and the drainage body utilizes described fixed arm and shell to be connected near the bottom of the exhaust outlet plurality of fixed arm that stretches out.
Aforesaid mixed flow fan, wherein, described diagonal flow type impeller and taper drainage body are to rotate synchronously.
Aforesaid mixed flow fan, wherein, described taper drainage body is can maintain static and the diagonal flow type impeller is rotated separately.
Aforesaid mixed flow fan, wherein, the flabellum outer end of described diagonal flow type impeller is to establish a ring reinforcing ring, this reinforcing ring is to have the pressure release of preventing function.
Aforesaid mixed flow fan, wherein, described motor is to be arranged on the overall volume of taper drainage body interior with the reduction mixed flow fan.
Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:
1, have concurrently in the advantage of air quantity and middle blast: because this novel inclination runner design is to rely on axially and between horizontal, therefore make this novel mixed flow fan have concurrently in air quantity with in high blast characteristics, also overcome the problems such as deficiency in draught of the noise and the centrifugal fan of conventional axial flow fan simultaneously.
2, structure simplify and fast volume production with reduce cost: because this novel member very simplifies and only be made of shell, diagonal flow type impeller, fixing frame and motor, so can reduce production costs and can be put to a large amount of productions, tool height economic benefit.
3, reduction fan volume: owing to this is novel is the drainage body interior that motor is embedded in fixing frame, but not as existing be that motor is arranged on the fan outside, so the overall volume that can reduce this novel mixed flow fan, to meet the compact demand of electronic equipment.
4, tool shaded effect: because this novel mixed flow fan is to be designed to the funnel-like of intake grill less than exhaust outlet, add all tapered design of shell and drainage body, therefore can effectively block the extraneous light in the exhaust outlet outside, can avoid the electrical assembly of extraneous light irradiation electronic equipment internal and influence the efficient and the life-span of electrical assembly.
5, available 3 axis processing machines (3D CNC) are directly processed: general oblique flow fan, because of leaf design distortion event can't directly be processed with 3 machine for automatic working, can not direct demold, can't make in a large number, this novel available 3 machine for automatic working are directly processed, but direct demold and have the convenient advantage of producing of making.
6, fluid enters diagonal flow fan inside by the air inlet through hollow shaft mouth and presses contraryly more backward, and relies on and to help centrifugal masterpiece pressurization, so the comparable axial fan of pressure is also high; And fluid is guided once again toward axial flow, so can satisfy the demand of axial flow before flowing to exhaust outlet.
7, the effect of the shockproof and anti-pressure release of tool: because this novel diagonal flow type impeller forms a ring reinforcing ring at blade end, not only can promote the intensity of diagonal flow type impeller, more can avoid the blade vibration phenomenon of diagonal flow type impeller when high speed rotating, in addition, because described reinforcing ring is the terrace that is arranged in air outlet of casing ring edge inboard, therefore be back to the effect of low pressure intake grill with the high pressure draught crack between flabellum and shell that reduces diagonal flow type impeller and shell gap, prevention exhaust outlet, and then can prevent that the pressure of mixed flow fan from leaking.
8, because the drainage body is to be the oblique cone moulding that extends out towards the exhaust outlet place from intake grill, therefore its bottom surface diameter near exhaust outlet is bigger, its volume is relatively large naturally and can ccontaining larger-diameter motor, so can install motor more high-power and, and then promote the whole efficiency of mixed flow fan than high pulling torque.
9, when fixing frame is made of hollow drainage body and supporting frame, described hollow drainage body and aial flow impeller are to process earlier recombinant respectively, and therefore still having available 3D CNC comes the molded advantage of easy processing.
10, when the hollow drainage body of fixing frame can rotate synchronously with aial flow impeller, because between fan industry and the hollow drainage body is to be no gap state, therefore the frictional loss of fluid between fan leaf and the hollow drainage body can be reduced, the whole efficiency of mixed flow fan can be promoted equally.
Description of drawings
Fig. 1 is the structural representation of existing axial flow fan;
Fig. 2 is the structural representation of existing centrifugal fan;
Fig. 3 is existing diagonal flow type pump structure schematic representation;
Fig. 4 is the perspective exploded view of this novel mixed flow fan;
Fig. 5 is the three-dimensional appearance schematic representation that this novel mixed flow fan is not installed shell;
Fig. 6 is the three-dimensional appearance schematic representation of this novel mixed flow fan;
Fig. 7 is the three-dimensional partial schematic sectional view of this novel mixed flow fan;
Fig. 8 is the whole cross-sectional schematic of this novel mixed flow fan;
Fig. 9 is the local enlarged diagram of this novel reinforcing ring and shell;
Figure 10 is this novel another embodiment's a perspective exploded view;
Figure 11 is this novel another embodiment's a whole cross-sectional schematic.
Description of reference numerals: A-mixed flow fan; The A1-intake grill; The A2-exhaust outlet; A3-inclination runner; The A4-recirculating zone; The G-gap; The 1-shell; The 11-terrace; The 12-lug; The 121-groove; 2-diagonal flow type impeller; 21-hub portion; The 211-jack; The 212-top cover; The 22-flabellum; The 23-reinforcing ring; The 3-fixing frame; 31-drainage body; The 32-draw-in groove; The 33-fixed arm; 3 '-fixing frame; 31 '-drainage body; 311 '-room; 32 '-supporting frame; 321 '-fixed arm; 322 '-fixed base; The 4-motor; The 41-rotating shaft; The 5-locked assembly.
Embodiment
About this novel technological means, lift two kinds of preferred embodiments now and cooperate and graphicly be elaborated hereinafter, novel for understanding in depth and admit on an ancient unit of weight.
At first see also Fig. 4, shown in Figure 5, this novel mixed flow fan A mainly comprises a shell 1, a diagonal flow type impeller 2 and a fixing frame 3, and is formed with an intake grill A1 and an exhaust outlet A2 (as shown in Figure 4), wherein:
Diagonal flow type impeller 2 as shown in Figure 4, is by a motor driven 4 runnings, diagonal flow type impeller 2 center of top tools one hub portion 21, hub portion 21 is positioned at intake grill A1 one side, and central authorities of hub portion 21 form one for the affixed jack 211 of the rotating shaft 41 of motors 4, and hub portion 21 simultaneously is that lid is established a top cover 212 towards intake grill A1; Hub portion 21 peripheries then link several pieces inclination flabellums 22 that is radial arrangement and extends and expand outwardly towards exhaust outlet A2 direction; Flabellum 22 connects the reinforcing ring 23 that a ring is prevented pressure release near the terminal outside of exhaust outlet A2, has the effect that prevents flabellum 22 vibrations;
Fixing frame 3, as shown in Figure 4, described fixing frame 3 tools one are by the taper drainage body 31 of intake grill A1 towards the expansion of exhaust outlet A2 direction, drainage body 31 central authorities form a draw-in groove 32, can fix wherein and form the drive fit state for motor 4, drainage body 31 extends the fixed arm 33 of corresponding shell 1 lug 12 in three roads near the outside equal angles in the bottom of exhaust outlet A2.
See also Fig. 5～shown in Figure 8 about this novel assembled state, it mainly is motor 4 to be fixed forming the drive fit state in the draw-in groove 32 of drainage body 31 (shown in the 5th and eight figure earlier, again, the set-up mode of described motor 4 is except that can directly fixing in the draw-in groove 32 of drainage body 31, certainly also can select to be arranged on the outside of fixing frame 3 drainage bodies 31, making motor 4 can drive diagonal flow type impeller 2 gets final product), next make the rotating shaft 41 of motor 4 wear in the jack 211 that is placed on diagonal flow type impeller 2 hub portions 21 in conjunction with (as shown in Figure 8), make diagonal flow type impeller 2 driven by the rotating shaft 41 of motor 4, and then shell 1 cover overlayed on diagonal flow type impeller 2 and fixing frame 3 outsides, and the fixed arm 33 that makes fixing frame 3 embeds in the groove 121 of shells 1 lug 12 and with locked assembly 5 (for example bolt) combination that locked, and promptly finishes the complete mixed flow fan A shown in the 6th and seven figure; Thus, reinforcing ring 23 right positions in the diagonal flow type impeller 2 terminal outsides are in the terrace 11 formed recirculating zone A4 of shell 1 exhaust outlet A2 ring edge inboard, the two clearance G of the reinforcing ring 23 that not only reduces diagonal flow type impeller 2 and the terrace of shell 1 11, and produce and to prevent that exhaust outlet A2 high pressure draught is back to the effect (as Fig. 8 and shown in Figure 9) at low pressure intake grill A1 place from recirculating zone A4 through shell 1 and flabellum 22 gaps, and will form the inclination runner A3 (as shown in Figure 8) outside exhaust outlet A2 direction between the inclined-plane, the outside of shell 1 inboard inclined-plane and drainage body 31 by intake grill A1.
More than be provided with, when motor 4 drives 2 rotations of diagonal flow type impeller, the diagonal flow type impeller 2 of high speed rotating will drive mixed flow fan A gas inside and discharge from exhaust outlet A2 place, mixed flow fan A inside then forms negative pressure and attracts mixed flow fan A air outside to suck mixed flow fan A inside from intake grill A1, pass through the inclination runner A3 of mixed flow fan A inside again, discharged fast from exhaust outlet A2 at last, and then air quantity and middle blast effect in producing, and can reduce running noise and more promote radiating efficiency.
The foregoing description is to adopt to make 2 rotations of diagonal flow type impeller, and taper drainage body 31 is to be fixed design.This another novel embodiment adopts the design that makes diagonal flow type impeller 2 and taper drainage body 31 ' be combined into one and can rotate synchronously, see also Figure 10, shown in Figure 11 in detail, this another novel embodiment mainly provides the fixing frame 3 ' design of another kind of form, wherein, described fixing frame 3 ' is the supporting frame 32 ' that can comprise an oblique cone shape hollow drainage body 31 ' and bottom; Described hollow drainage body 31 ' central authorities form a room 311 ' to be provided with for the hub portion 21 of diagonal flow type impeller 2, and described hollow drainage body 31 ' is can be installed in the rotating shaft 41 of motor 4 and rotate synchronously with diagonal flow type impeller 2; Described supporting frame 32 ' the three road fixed arms 321 ' that stretch out, make described fixed arm 321 ' embed in the groove 121 of shell 1 lug 12 and, and supporting frame 32 ' central authorities form a fixed base 322 ' and directly set firmly for motor 4 with locked assembly 5 (for example bolt) combination that locked.
More than explanation is just illustrative for the utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200032544U CN201027678Y (en) | 2007-02-02 | 2007-02-02 | Diagonal flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200032544U CN201027678Y (en) | 2007-02-02 | 2007-02-02 | Diagonal flow fan |
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| Publication Number | Publication Date |
|---|---|
| CN201027678Y true CN201027678Y (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200032544U Expired - Fee Related CN201027678Y (en) | 2007-02-02 | 2007-02-02 | Diagonal flow fan |
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| CN (1) | CN201027678Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878117A (en) * | 2012-06-29 | 2013-01-16 | 中国船舶重工集团公司第七0九研究所 | Exhaust blower with outlet air guiding plate |
| CN104295535A (en) * | 2013-07-17 | 2015-01-21 | 建准电机工业股份有限公司 | Serial fan |
| CN104295511A (en) * | 2013-07-17 | 2015-01-21 | 建准电机工业股份有限公司 | Shock-absorbing fan |
| CN109505783A (en) * | 2017-09-14 | 2019-03-22 | 台达电子工业股份有限公司 | Diagonal flow fan |
| CN114033746A (en) * | 2022-01-04 | 2022-02-11 | 怀化学院 | Heat reflow elimination device and blower cooling module |
| US20220228759A1 (en) * | 2020-04-03 | 2022-07-21 | Airtek International Corporation Limited | Bladeless Cooling Fan |
-
2007
- 2007-02-02 CN CNU2007200032544U patent/CN201027678Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878117A (en) * | 2012-06-29 | 2013-01-16 | 中国船舶重工集团公司第七0九研究所 | Exhaust blower with outlet air guiding plate |
| CN104295535A (en) * | 2013-07-17 | 2015-01-21 | 建准电机工业股份有限公司 | Serial fan |
| CN104295511A (en) * | 2013-07-17 | 2015-01-21 | 建准电机工业股份有限公司 | Shock-absorbing fan |
| CN104295535B (en) * | 2013-07-17 | 2018-05-15 | 建准电机工业股份有限公司 | Serial fan |
| CN109505783A (en) * | 2017-09-14 | 2019-03-22 | 台达电子工业股份有限公司 | Diagonal flow fan |
| US20220228759A1 (en) * | 2020-04-03 | 2022-07-21 | Airtek International Corporation Limited | Bladeless Cooling Fan |
| US12173923B2 (en) * | 2020-04-03 | 2024-12-24 | Airtek International Corporation Limited | Bladeless cooling fan |
| CN114033746A (en) * | 2022-01-04 | 2022-02-11 | 怀化学院 | Heat reflow elimination device and blower cooling module |
| CN114033746B (en) * | 2022-01-04 | 2024-03-08 | 怀化学院 | Thermal reflux eliminating device and blowing type heat radiation module |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 |