CN101713413B - Inner rotor type radiator fan - Google Patents
Inner rotor type radiator fan Download PDFInfo
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- CN101713413B CN101713413B CN2008101677381A CN200810167738A CN101713413B CN 101713413 B CN101713413 B CN 101713413B CN 2008101677381 A CN2008101677381 A CN 2008101677381A CN 200810167738 A CN200810167738 A CN 200810167738A CN 101713413 B CN101713413 B CN 101713413B
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Abstract
The invention relates to an inner rotor type radiator fan which comprises a fan fame, a magnet sealing shell, an inner rotor motor, an impeller and a circuit board, wherein the fan frame is provided with a frame body and a fixing seat; the magnet sealing shell is a hollow shell made of a permeability magnetic material; a combination part is formed at one end of the magnet sealing shell, and the combination part is combined on the fixing seat of the fan frame; the inner rotor motor is arranged in the magnet sealing shell; the impeller is combined with the inner rotor motor and arranged outside the magnet sealing shell; and the circuit board is electrically connected with a stator. Thus the inner rotor motor can stabilize the rotating actions of a rotor and the impeller and match with the fan frame to effectively guide and centralize air flows generated by the impeller, and the magnet sealing shell can provide a magnet sealing effect for avoiding generating a magnetic leakage phenomenon so as to promote the integral radiating effect.
Description
Technical field
The present invention relates to a kind of radiation fan, particularly about a kind of inner rotor type radiator fan that is driven by inner rotor motor.
Background technique
Please refer to shown in Figure 1ly, be the existing radiation fan 70 that is driven with external-rotor motor, this radiation fan 70 roughly comprises a fan frame 71, a stator 72, a circuit board 73 and a rotor 74.The inboard of this fan frame 71 is provided with a central siphon 711, and at least one bearing 712 is set in this central siphon 711; This stator 72 and circuit board 73 are sheathed on the outside circumference of this central siphon 711, and this circuit board 73 electrically connects this stator 72; This rotor 74 has a rotating shaft 741 and an impeller 742, and these rotating shaft 741 1 ends stretch through to this central siphon 711 articulating this bearing 712,742 the other ends that are incorporated into this rotating shaft 741 of this impeller, and this impeller 742 is provided with a permanent magnet 743 that should stator 72.Whereby, produce the effect of magnetic interlinkage between this this stator 72 of circuit board 73 may command and this permanent magnet 743,, and then can reach a thermolysis so that drive this impeller 742 spinning movements.
The aforementioned existing radiation fan 70 main external-rotor motors that adopt are driven, only generally speaking, external-rotor motor roughly has problems such as the relatively poor and rotating speed of rotational stabilization is lower compared to inner rotor motor, and electronic product generally towards direction research and development designs such as high speed, function integration and microminiaturized trend, causes the also lifting gradually of the desired heat sinking function of electronic product now.Therefore, the aforementioned existing radiation fan 70 that drives with external-rotor motor can't satisfy the radiating requirements of portions of electronics product fully.
For making radiation fan, also there is relevant practitioner to develop and a kind ofly discloses " fan and inner rotor motor thereof " patent of invention case No. 200744290 as TaiWan, China applicable to the higher electronic product of radiating requirements.Please refer to shown in Figure 2ly, disclose a kind of existing radiation fan 80 that adopts inner rotor motor to drive, this radiation fan 80 roughly comprises a housing 81, a stator structure 82, a rotor structure 83, a drive unit 84 and an impeller 85.This housing 81 is made up of one first housing 811 and one second housing 812; This stator structure 82 has a magnetic conductive component 821; This rotor structure 83 has a rotating shaft 831 and a magnetic element 832, and this rotating shaft 831 wears to this housing 81 inside, is placed in this rotating shaft 831 and to should magnetic conductive component 821 for this magnetic element 832; This drive unit 84 electrically connects this magnetic conductive component 821; This impeller 85 links this rotating shaft 831 and is positioned at this housing 81 outsides.Whereby, the current direction of this this magnetic conductive component 821 of drive unit 84 may command so that produce the effect of magnetic interlinkage with this magnetic element 832, and then drives this rotor structure 83 and impeller 85 spinning movements.
But, when aforementioned existing radiation fan 80 is desired to dispel the heat at various electronic product, because this radiation fan 80 does not have the design of fan frame, so the air-flow that is produced when causing these impeller 85 runnings can't effectively be guided a predetermined heating position that is concentrated to this electronic product, therefore, this existing radiation fan 80 still has problems such as radiating effect is not good.
Do not have the fan disadvantages associated that frame produced for improving aforementioned existing radiation fan 80, please refer to shown in Figure 3, it discloses and a kind ofly to be driven and to have the existing radiation fan 90 of fan frame with inner rotor motor, and this radiation fan 90 comprises a fan frame 91, an inner rotor motor 92, an impeller 93 and a circuit board 94.This fan frame 91 is with plastic material ejection formation one a fan frame portion 911 and a motor shell 912, and this motor shell 912 is positioned at this fan frame portion 911 inboards; This inner rotor motor 92 is incorporated into the inside of this motor shell 912 and comprises a rotating shaft 921, a magnetic element 922 and a stator 923, and these rotating shaft 921 1 ends pass to this motor shell 912 outsides, and this magnetic element 922 is in conjunction with this rotating shaft 921 and this stator 923 of contraposition; This impeller 93 is incorporated into an end of this rotating shaft 921 and is positioned at the outside of this motor shell 912; This circuit board 94 electrically connects this stator 923.Whereby, can utilize this inner rotor motor 92 to drive these impeller 93 spinning movements, so that a predetermined heat dissipation effect to be provided.
Aforementioned existing radiation fan 90 mainly forms this fan frame 91 with injection molding method, so that the air-flow that is produced when utilizing the design guide of this fan frame 91 to concentrate these impeller 93 runnings.Yet, also because the motor shell 912 of this fan frame 91 is made with ejection formation with plastic material, therefore, between these circuit board 94 these stators 923 of control and this magnetic element 922, produce in the process of magnetic interlinkage effect, this motor shell 912 itself also can't provide an envelope magnetic action, so be easy to generate the leakage field phenomenon, also can cause the problem of electromagnetic interference on the other hand, make the running usefulness of this impeller 93 be affected, and then reduce the radiating effect of this existing radiation fan 90.
Summary of the invention
Main purpose of the present invention provides a kind of inner rotor type radiator fan, and its main goal of the invention is driven with inner rotor motor, and holds concurrently and can effectively prevent the problem that produces the leakage field phenomenon and stop electromagnetic interference.
For reaching aforementioned goal of the invention, technological means that the present invention used and the effect that can reach by this technological means include:
A kind of inner rotor type radiator fan, it comprises a fan frame, an envelope magnetic shell, an inner rotor motor, an impeller and a circuit board.This fan frame has a framework and a fixed base, and two ends of this framework form an intake grill and an exhaust outlet respectively, has an air-flow path between this intake grill and the exhaust outlet, interconnects with several links between this fixed base and this framework; This envelope magnetic shell is the made hollow casing of permeability magnetic material, and this envelope magnetic shell one end forms a connecting part, and this connecting part is incorporated into the fixed base of this fan frame; It is inner and comprise a rotor and a stator that this inner rotor motor is arranged at this envelope magnetic shell, being placed in this stator of this rotor rotation, and this rotor has a rotating shaft and a magnetic element, and this magnetic element is in conjunction with this rotating shaft and this stator of contraposition; This impeller is in conjunction with this rotating shaft and be positioned at the outside of this envelope magnetic shell; This circuit board electrically connects this stator.Whereby, can utilize this inner rotor motor to stablize the spinning movement of this rotor and impeller, and cooperate this fan frame effectively to guide the air-flow of concentrating this impeller to be produced, and this envelope magnetic shell can provide the generation of an envelope magnetic action to avoid the producing leakage field phenomenon and to stop electromagnetic interference, and then can reach the effect that promotes the integral heat sink effect.
The outer circumferential face of this envelope magnetic shell forms a recess, and the fixed base of this fan frame coats the outer circumferential face of this envelope magnetic shell, and the inner peripheral surface of this fixed base forms a fastening part, between the recess of this fastening part and this envelope magnetic shell mutually clip combine.Whereby, can not rotate arbitrarily or come off to guarantee this envelope magnetic shell, so can reach the effects such as linking steady character that promote between this envelope magnetic shell and the fixed base relative to this fixed base.
The inner peripheral surface of this envelope magnetic shell forms a protuberance, and the periphery of this stator forms a restraining groove, and this restraining groove clip should seal the protuberance of magnetic shell.Whereby, can not rotate arbitrarily to guarantee this stator, and have the effect that can promote the assembling convenience yet in this envelope magnetic shell is inner.
The fixed base of this fan frame is the sleeve that inboard perisporium has a positioning part, this fixed base internal junction unification locating piece and a capping, this locating piece and capping mutually combine and this positioning part of butt, this circuit board is arranged between this locating piece and the capping, and this locating piece separates this circuit board and this stator.Whereby, the radiating effect of high this circuit board of heat affecting that is produced in the time of can avoiding this stator action is to reach the effects such as associated electrical member damage that effectively prevent this circuit board.
The fixed base of this fan frame is the sleeve that inboard perisporium has an abutting part, this abutting part of connecting part butt of this envelope magnetic shell.Whereby, can further promote linking steady character between this envelope magnetic shell and the fixed base.
The connecting part of this envelope magnetic shell forms a wide diameter portion, makes the periphery wall of this envelope magnetic shell form the poor portion in a footpath, and the inboard perisporium of the fixed base of this fan frame has a positioning part, this directly poor combine with the mutual clip in this positioning part.Whereby, can effectively promote linking steady character between this envelope magnetic shell and the fixed base equally.
The wide diameter portion root edge of this envelope magnetic shell forms several bent protruding hooks.Whereby, come off as members such as circuit boards effectively preventing.
In sum, the beneficial effect of inner rotor type radiator fan of the present invention is: can be by the characteristic of this inner rotor motor, with the spinning movement of effectively stablizing this rotor and impeller and improve its rotating speed, and also can utilize this fan frame effectively to guide the air-flow of concentrating this impeller to be produced, and then promote the integral heat sink effect of this radiation fan.The more important thing is, because this inner rotor motor is to be installed in this envelope magnetic shell inside, therefore, when this circuit board is controlled in the process of generation magnetic interlinkage effect between this fixed and this magnetic element, this envelope magnetic shell itself can provide an envelope magnetic action, effectively to avoid producing the leakage field phenomenon, can not be affected so can guarantee the running usefulness of this impeller, also can prevent simultaneously the generation of electromagnetic interference, with further lifting integral heat sink effect.
Description of drawings
Fig. 1: the assembled sectional view that has the radiation fan that is driven with external-rotor motor now.
Fig. 2: the assembled sectional view that has the radiation fan that is driven with inner rotor motor now.
Fig. 3: the assembled sectional view of the existing radiation fan that has the fan frame and drive with inner rotor motor.
Fig. 4: the three-dimensional exploded view of the inner rotor type radiator fan of first embodiment of the invention.
Fig. 5: the assembled sectional view of the inner rotor type radiator fan of first embodiment of the invention.
Fig. 6: the three-dimensional exploded view of the inner rotor type radiator fan of second embodiment of the invention.
Fig. 7: the assembled sectional view of the inner rotor type radiator fan of second embodiment of the invention.
Fig. 8: the inner rotor type radiator fan of second embodiment of the invention is along the sectional view of the 8-8 line of Fig. 7.
Fig. 9: the three-dimensional exploded view of the inner rotor type radiator fan of third embodiment of the invention.
Figure 10: the assembled sectional view of the inner rotor type radiator fan of third embodiment of the invention.
The primary component symbol description:
1,1 ', 1 " fan frame 11 frameworks 111 intake grills 112 exhaust outlets
113 air-flow paths, 12 fixed bases, 121 abutting parts, 122 positioning parts
15 cappings of 123 fastening parts, 13 links, 14 locating pieces
16 clutch shaft bearings 2,2 ', 2 " envelope magnetic shell 21 connecting parts 211 wide diameter portions
Poor 22 first opening 221 rooms in 212 protruding hook 213 footpaths
222 second bearings, 23 second openings, 24 recesses, 25 protuberances
3 inner rotor motors, 31 rotors, 311 rotating shafts, 312 magnetic elements
32,32 ' stator, 321 restraining grooves, 4 impellers, 5 circuit boards
70 radiation fans, 71 fan frames, 711 central siphons, 712 bearings
741 rotating shafts of 72 stators, 73 circuit boards, 74 rotors
742 impellers, 743 permanent magnets, 80 radiation fans, 81 housings
811 first housings, 812 second housings, 82 stator structures, 821 magnetic conductive components
83 rotor structures, 831 rotating shafts, 832 magnetic elements, 84 drive units
85 impellers, 90 radiation fans, 91 fan frames, 911 fan frame portions
912 motor shells, 92 inner rotor motors, 921 rotating shafts, 922 magnetic elements
923 stators, 93 impellers, 94 circuit boards
Embodiment
In order to allow above-mentioned and other purposes, feature and advantage of the present invention understand by clearer and more definite quilt, hereinafter will be especially exemplified by preferred embodiment of the present invention, and conjunction with figs., be described in detail below:
Please refer to Fig. 4 and shown in Figure 5, the inner rotor type radiator fan of first embodiment of the invention mainly comprises a fan frame 1, an envelope magnetic shell 2, an inner rotor motor 3, an impeller 4 and a circuit board 5.This fan frame 1 can be made by injection molding method; This envelope magnetic shell 2 is incorporated into this fan frame 1 inboard; This inner rotor motor 3 is arranged at this envelope magnetic shell 2 inside; 4 in this impeller links this inner rotor motor 3; This circuit board 5 electrically connects this inner rotor motor 3.Whereby, can utilize this this inner rotor motor 3 of circuit board 5 controls to drive these impeller 4 spinning movements, and the air-flow that is produced when these impeller 4 runnings are concentrated in 1 guiding by this fan frame, and hold concurrently and to utilize this envelope magnetic shell 2 that an envelope magnetic action is provided, with the generation of effectively avoiding this inner rotor motor 3 to produce leakage field phenomenon and electromagnetic interference.
The fan frame 1 of first embodiment of the invention has a framework 11 and a fixed base 12.Two ends of this framework 11 form an intake grill 111 and an exhaust outlet 112 respectively, have an air-flow path 113 between this intake grill 111 and the exhaust outlet 112; This fixed base 12 is formed in this air-flow path 113, and can utilize several links 13 to interconnect between this fixed base 12 and this framework 11, these link 13 preferable exhaust outlets 112 that are adjacent to this framework 11 respectively, respectively this link 13 then can be selected structures such as rib or stator blade for use.In addition, as shown in Figure 4, this fixed base 12 is preferably the sleeve that two ends have opening respectively, and the inboard perisporium of this sleeve forms an abutting part 121 and a positioning part 122 respectively, and this abutting part 121 or positioning part 122 respectively can be structural designs such as a ring flange or several projections.Again, this fixed base 12 is inner preferable in conjunction with a positioning piece 14 and a capping 15, and wherein this locating piece 14 can be in conjunction with a clutch shaft bearing 16, and this locating piece 14 and capping 15 mutually buckle in conjunction with this positioning part 122 of butt also, to form a firm combination.
The envelope magnetic shell 2 of first embodiment of the invention is the made hollow casing of permeability magnetic material, and these envelope magnetic shell 2 one ends form a connecting part 21, and this connecting part 21 is in conjunction with fixed base 12 and this abutting part 121 of butt of this fan frame 1.In addition, this envelope magnetic shell 2 forms one first opening 22 and one second opening 23 respectively towards two ends of this intake grill 111 and exhaust outlet 112, so that carry out the assembling operation of this inner rotor motor 3, wherein this first opening 22 is preferable can further form a room 221, can be in conjunction with one second bearing 222 in this room 221.
The inner rotor motor 3 of first embodiment of the invention is assembled in this envelope magnetic shell 2 inside, and this inner rotor motor 3 comprises a rotor 31 and a stator 32.These rotor 31 rotating being placed in this stator 32, and this rotor 31 has a rotating shaft 311 and a magnetic element 312.One end of this rotating shaft 311 is stretched through this envelope magnetic shell 2 inside via this first opening 22, and also stretch in this locating piece 14 via this second opening 23, so that this rotating shaft 311 can mutually combine with this clutch shaft bearing 16 and second bearing 222 respectively, and then can rotate smoothly by this clutch shaft bearing 16 and second bearing 222; The outside circumference of this rotating shaft 311 is fixed in 312 sockets of this magnetic element, for this stator 32 of contraposition.
The impeller 4 of first embodiment of the invention can be incorporated into the other end of this rotating shaft 311 and be positioned at the outside of this envelope magnetic shell 2.In addition, this circuit board 5 is arranged between this locating piece 14 and the capping 15, and this circuit board 5 electrically connects this stator 32, wherein this locating piece 14 can be in order to fix this circuit board 5, and the mounting point of the mounting point of this circuit board 5 and this stator 32 is separated by this locating piece 14, the radiating effect of this circuit board 5 of high heat affecting that is produced when avoiding 32 actions of this stator, and hold concurrently and can utilize this capping 15 to prevent that effectively this circuit board 5 from coming off.
Inner rotor type radiator fan of the present invention is when assembling, this fan frame 1 preferable plastic material of selecting for use is made, and can utilize injection molding method directly to form this framework 11 and fixed base 12, and in the process of ejection formation, this envelope magnetic shell 2 also can cooperate and directly is placed in the employed mould of ejection formation operation, so that can directly coat the connecting part 21 of this envelope magnetic shell 2 after this fixed base 12 is shaped, it is fixing that this envelope magnetic shell 2 and this fixed base 12 are formed between the two; Perhaps, also can form this fan frame 1 with injection molding method in advance after, it is inboard and be connected to this abutting part 121 that this fixed base 12 is fixed in the drive fit mode in the connecting part 21 that will seal magnetic shell 2 again.Behind the assembling operation of finishing this fan frame 1 and envelope magnetic shell 2, the associated components of this inner rotor motor 3 can be assembled this envelope magnetic shell 2 inside, and cooperate members such as this impeller 4 of installing and circuit board 5, so as to constituting inner rotor type radiator fan of the present invention.
Please refer to Figure 6 and Figure 7, it discloses the inner rotor type radiator fan of second embodiment of the invention, this inner rotor type radiator fan comprises a fan frame 1 ', an envelope magnetic shell 2 ', an inner rotor motor 3, an impeller 4 and a circuit board 5 equally, and this fan frame 1 ', envelope magnetic shell 2 ', inner rotor motor 3, impeller 4 and circuit board 5 are roughly the same with the structure characteristic that aforementioned first embodiment is disclosed, and its main difference only is:
This envelope magnetic shell 2 ' can further utilize impact style to form a recess 24 in its outer circumferential face, and makes the inner peripheral surface of this envelope magnetic shell 2 ' form a protuberance 25 relatively, and again, the outer circumferential face of this stator 32 ' then can form a restraining groove 321.Please cooperate with reference to shown in Figure 8, when form this fan frame 1 ' with injection molding method, so that in the time of can directly being coated on the outer circumferential face of this envelope magnetic shell 2 ' after this fixed base 12 is shaped, by the aforementioned structural design that should seal magnetic shell 2 ', then the inner peripheral surface of this fixed base 12 can further form a fastening part 123, form mutual clip bonding state between the recess 24 of this fastening part 123 and this envelope magnetic shell 2 ', can not come off arbitrarily and rotate to guarantee this envelope magnetic shell 2 '; In addition, when this stator 32 ' is installed in this envelope magnetic shell 2 ' inside, the restraining groove 321 of this stator 32 ' more can cooperate the protuberance 25 of this envelope magnetic shell 2 ' of clip, can not rotate arbitrarily in this envelope magnetic shell 2 ' inside further to guarantee this stator 32 ', and preferable assembling convenience can be provided.
Please refer to Fig. 9 and shown in Figure 10, it discloses the inner rotor type radiator fan of third embodiment of the invention, this inner rotor type radiator fan comprises a fan frame 1 equally ", an envelope magnetic shell 2 ", an inner rotor motor 3, an impeller 4 and a circuit board 5, this fan frame 1 wherein ", envelope magnetic shell 2 ", inner rotor motor 3, impeller 4 and circuit board 5 be roughly the same with the structure characteristic that aforementioned first embodiment is disclosed, its main difference only is:
This envelope magnetic shell 2 " connecting part 21 can further form a wide diameter portion 211, these wide diameter portion 211 root edges form several protruding hooks 212, make this envelope magnetic shell 2 " periphery wall can form poor 213 in a footpath; This fan frame 1 " then can further omit the abutting part 121 that aforementioned first embodiment is disclosed.When form this fan frame 1 with injection molding method "; so that can directly be coated on the outer circumferential face of this envelope magnetic shell 2 ' after this fixed base 12 is shaped the time; 122 of the positioning parts of this fixed base 12 can with this envelope magnetic shell 2 " poor 213 in footpath form mutual clip bonding state, to guarantee this envelope magnetic shell 2 " can not come off arbitrarily and rotate; In addition, when this circuit board 5, locating piece 14 and capping 15 are installed in this envelope magnetic shell 2 " when inner; also bent should envelope magnetic shell 2 " each protruding hook 212 this protruding hook 212 prevents that effectively members such as this circuit board 5, locating piece 14 and capping 15 from coming off so that utilize respectively, and then preferable combination is provided; Perhaps, this envelope magnetic shell 2 " also can directly be fixed members such as this circuit board 5, locating piece 14 and capping 15 by the riveted mode, to promote the assembling convenience.
Inner rotor type radiator fan of the present invention can be installed in the predetermined heating position of various electronic product when reality is used, and the exhaust outlet 112 of this fan frame 1 is towards this predetermined heating position.And utilize the stator 32 of these circuit board 5 these inner rotor motors 3 of control and the magnetic element 312 of this rotor 31 to produce the effects of magnetic interlinkage, make further to drive the rotating shaft 311 rotatable actions of this rotor 31 these impellers 4 again and be rotated action via this rotating shaft 311.Whereby, when 4 rotations of this impeller, can air-guiding enter this air-flow path 113, give from 112 derivation of this exhaust outlet, so that carry out thermolysis via these air-flow path 113 focused airflow again at this electronic product via the intake grill 111 of this fan frame 1.
As mentioned above, inner rotor type radiator fan of the present invention can be by the characteristic of this inner rotor motor 3, with the spinning movement of effectively stablizing this rotor 31 and impeller 4 and improve its rotating speed, and also can utilize this fan frame 1 effectively to guide the air-flow of concentrating this impeller 4 to be produced, and then promote the integral heat sink effect of this radiation fan.The more important thing is, because this inner rotor motor 3 is to be installed in this envelope magnetic shell 2,2 ' inside, therefore, when this stator of this circuit board 5 controls 32,32 ' with this magnetic element 312 between in the process of generation magnetic interlinkage effect, this envelope magnetic shell 2,2 ' itself can provide an envelope magnetic action, effectively to avoid producing the leakage field phenomenon, can not be affected so can guarantee the running usefulness of this impeller 4, also can prevent simultaneously the generation of electromagnetic interference, with further lifting integral heat sink effect.
Claims (7)
1. inner rotor type radiator fan is characterized in that it comprises:
A fan frame, have a framework and a fixed base, two ends of this framework form an intake grill and an exhaust outlet respectively, has an air-flow path between this intake grill and the exhaust outlet, interconnect with several links between this fixed base and this framework, wherein this fixed base is a sleeve, and this sleeve has one first opening and one second opening, and the inboard perisporium of this sleeve has an abutting part and a positioning part between this first opening and second opening;
An envelope magnetic shell is the made hollow casing of permeability magnetic material, and this envelope magnetic shell one end forms a connecting part, and this envelope magnetic shell is inserted by first opening of this sleeve, and this this abutting part of connecting part butt;
An inner rotor motor, be arranged at this envelope magnetic shell inside and comprise a rotor and a stator, being placed in this stator of this rotor rotation, this rotor has a rotating shaft and a magnetic element, this magnetic element is in conjunction with this rotating shaft and this stator of contraposition, this rotating shaft one end stretch through this sleeve second opening and stretch into positioning piece, this locating piece stretches into this second opening and is close to this positioning part, this rotating shaft the other end passes this envelope magnetic shell;
An impeller is in conjunction with this rotating shaft and be positioned at the outside of this envelope magnetic shell; And
One circuit board electrically connects this stator.
2. according to the described inner rotor type radiator fan of claim 1, it is characterized in that: the outer circumferential face of this envelope magnetic shell forms a recess, the fixed base of this fan frame coats the outer circumferential face of this envelope magnetic shell, and the inner peripheral surface of this fixed base forms a fastening part, and mutual clip combines between the recess of this fastening part and this envelope magnetic shell.
3. according to claim 1 or 2 described inner rotor type radiator fans, it is characterized in that: the inner peripheral surface of this envelope magnetic shell forms a protuberance, and the periphery of this stator forms a restraining groove, and this restraining groove clip should seal the protuberance of magnetic shell.
4. according to the described inner rotor type radiator fan of claim 3, it is characterized in that: this fixed base internal junction unification capping, this locating piece and capping mutually combine and this positioning part of butt, and this circuit board is arranged between this locating piece and the capping, and this locating piece separates this circuit board and this stator.
5. according to claim 1 or 2 described inner rotor type radiator fans, it is characterized in that: this fixed base internal junction unification capping, this locating piece and capping mutually combine and this positioning part of butt, and this circuit board is arranged between this locating piece and the capping, and this locating piece separates this circuit board and this stator.
6. inner rotor type radiator fan is characterized in that it comprises:
A fan frame, have a framework and a fixed base, two ends of this framework form an intake grill and an exhaust outlet respectively, has an air-flow path between this intake grill and the exhaust outlet, interconnect with several links between this fixed base and this framework, wherein this fixed base is a sleeve, and this sleeve has one first opening and one second opening, and the inboard perisporium of this sleeve has a positioning part between this first opening and second opening;
An envelope magnetic shell is the made hollow casing of permeability magnetic material, and this envelope magnetic shell one end forms a connecting part, and this connecting part forms a wide diameter portion, makes the periphery wall of this envelope magnetic shell form the poor portion in footpath, and poor of this footpath combines with the mutual clip in this positioning part;
An inner rotor motor, be arranged at this envelope magnetic shell inside and comprise a rotor and a stator, being placed in this stator of this rotor rotation, this rotor has a rotating shaft and a magnetic element, this magnetic element is in conjunction with this rotating shaft and this stator of contraposition, this rotating shaft one end stretch through this sleeve second opening and stretch into positioning piece, this locating piece stretches into this second opening and is close to the wide diameter portion of this envelope magnetic shell, this rotating shaft the other end passes this envelope magnetic shell;
An impeller is in conjunction with this rotating shaft and be positioned at the outside of this envelope magnetic shell; And
A circuit board electrically connects this stator.
7. according to the described inner rotor type radiator fan of claim 6, it is characterized in that: the wide diameter portion root edge of this envelope magnetic shell forms several protruding hooks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101677381A CN101713413B (en) | 2008-10-06 | 2008-10-06 | Inner rotor type radiator fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101677381A CN101713413B (en) | 2008-10-06 | 2008-10-06 | Inner rotor type radiator fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101713413A CN101713413A (en) | 2010-05-26 |
| CN101713413B true CN101713413B (en) | 2011-11-09 |
Family
ID=42417318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101677381A Active CN101713413B (en) | 2008-10-06 | 2008-10-06 | Inner rotor type radiator fan |
Country Status (1)
| Country | Link |
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| CN (1) | CN101713413B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784994B (en) * | 2012-05-24 | 2015-04-22 | 盐城市康杰机械制造有限公司 | Circulating fan of aluminium soldering preheating furnace |
| CN105673536B (en) * | 2016-03-23 | 2018-12-11 | 黄瑞益 | Ball fan and its center rod structure |
-
2008
- 2008-10-06 CN CN2008101677381A patent/CN101713413B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101713413A (en) | 2010-05-26 |
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Address after: The new Taiwan China Ya Lu Kaohsiung City No. 30 Lane 296 Patentee after: Jianzhun Electric Motor Industry Co., Ltd. Address before: Are China Taiwan Lingya Kaohsiung No. 120 12 floor 1 Patentee before: Jianzhun Electric Motor Industry Co., Ltd. |