CN1322237C - Structure of fan device for lead out - Google Patents
Structure of fan device for lead out Download PDFInfo
- Publication number
- CN1322237C CN1322237C CNB2004100807407A CN200410080740A CN1322237C CN 1322237 C CN1322237 C CN 1322237C CN B2004100807407 A CNB2004100807407 A CN B2004100807407A CN 200410080740 A CN200410080740 A CN 200410080740A CN 1322237 C CN1322237 C CN 1322237C
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- Prior art keywords
- fan
- lead
- wire
- fan assembly
- outer frame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0693—Details or arrangements of the wiring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A lead wire is led out to a fan outer frame portion side through a lead wire retaining portion that is provided to a motor support portion of a housing that fixes a fan motor so as to protrude to a fan outer frame portion side or is provided to the fan outer frame portion of the housing so as to protrude to the motor support portion side. The lead wire retaining portion is positioned between neighboring support beams for fixing the motor support portion to the fan outer frame portion.
Description
Technical field
The present invention relates to a kind of structure that is used to draw the fan assembly of lead.Fan assembly is used for various device, for example in office equipment or the home appliances.
Background technique
Fan assembly is widely used in various device, for example in office equipment or the home appliances, is used to cool off the heat that produces when these equipment works.Particularly, personal computer or server unit need dynamical fan assembly, this fan assembly has less size, and can supply a large amount of air for the processing rate of personal computer or server unit and himself undersized needs (this makes cpu chip and other intergrated circuit (IC) produce more heat when the work) proportionally.Fan assembly generally includes fan electromotor, housing and printed circuit board (PCB).Fan electromotor comprises the motor that is used to produce driving force and is rotated to produce the impeller of cooling air flow by drive force.Described housing comprises: the motor supporting portion is used for supports fan motor and printed circuit board (PCB); The fan outer frame portion, it is with the predetermined all sides that are disposed on the motor supporting portion; And a plurality of support beams, be used between motor supporting portion and fan outer frame portion, connecting.Described printed circuit board (PCB) is made as and is used to control motor.In addition, be used for being directed into a wires guides groove and being connected to motor by printed circuit board (PCB) from the lead-in wire of external power supply supply electric power, this wires guides groove vertically is formed in one of them of a plurality of support beams by the fan outer frame portion.This power supply makes fan electromotor rotation with drives impeller, in the space of impeller between fan outer frame portion and motor supporting portion along the axial generation air stream of fan electromotor.
Usually, be provided with three or more support beams in the space between fan outer frame portion and motor supporting portion, with the support motor supporting portion.In order to prevent that these support beams from becoming the obstruction of air stream vertically, these support beams are adjusted to as much as possible little along the cross section perpendicular to the direction of rotation axis.
Yet in the said fans device, lead-in wire is placed in one of them support beam, and support beam becomes thicker.As a result, when improving the air stream performance, resistance of air can produce restriction to reduce when attempting to reduce the support beam width.
In addition, Jin Cou fan assembly has very little distance between motor supporting portion and fan outer frame portion.Therefore, some fan assemblys will go between and directly draw to the fan outer frame portion, rather than be directed to support beam.This structure does not need steering channel in support beam, thereby can reduce the resistance of air of support beam.Yet if lead-in wire is loosening, the insulating coat that goes between the impeller that just may touch rotation so and make lead-in wire is damaged and cause short circuit or lead-in wire damage itself.
Recently, need fan assembly to produce more air stream.In this case, be difficult to ignore owing to increase the windage loss that thickness produced of the support beam that keeps lead-in wire.In addition, people wish that also the profile of office equipment etc. is littler.Therefore, the space between impeller and the fan outer frame portion need be minimized, thereby under the constant situation of the profile of fan assembly, hold the maximum impeller that is used to produce a large amount of air streams.
Summary of the invention
An object of the present invention is to provide a kind of fan assembly, it can be supplied a large amount of air and have very little windage loss.Another object of the present invention provides a kind of fan assembly, and it can keep lead-in wire simply and minimize windage loss.
According to a first aspect of the invention, provide a kind of fan assembly, it comprises fan electromotor, impeller and housing.This fan electromotor comprises rotor portion and stationary part, rotor by from external power supply through lead-in wire be fed to stator electric power and around the pivot axis of motor.Thereby impeller is fixed to and produces air stream on the rotor portion when motor rotates.
Housing comprises: the fan outer frame portion; The discoid motor supporting portion, it in rotational direction stretches out from the cardinal principle center that is positioned on the motor rotation axis line, thus the fan attachment motor; At least three support beams are used for the motor supporting portion is fixedly connected to the fan outer frame portion; And the lead-in wire holding part, be used for keeping lead-in wire.This lead-in wire holding part in rotational direction outwards or extend internally and comprises arm, and an end of this arm is fixed on motor supporting portion or the fan outer frame portion, and the other end has lead-in wire and keeps recess.
In this fan assembly, lead-in wire is not contained in the support beam, but open ground is by the space between motor supporting portion and the fan outer frame portion.Therefore, support beam can reduce its width as far as possible in the scope of abundant proof strength.In addition, when the support beam width reduced, the resistance of air of flow air can reduce in the space between motor supporting portion and fan outer frame portion, thereby had improved the air blast performance.Lead-in wire is kept by the lead-in wire holding part, and this lead-in wire holding part has the shape of very little windage loss.Therefore, realized such fan assembly, that is, it may make lead-in wire touch impeller and have very little windage loss hardly.
In addition, has following structure except the structure of first aspect present invention according to another embodiment of fan assembly of the present invention.That is, housing is made by synthetic resin by injection-molded, and the fan outer frame portion comprises fan external frame columnar portion and a plurality of fixed end board that surrounds fan electromotor, and these fixed end boards are located on the outer surface of fan external frame columnar portion.One end of support beam is connected to the cardinal principle center of the adjacent both sides of fixed end board angle of attachment, and its other end is connected on the motor supporting portion.
In this fan assembly, housing is made by synthetic resin by injection-molded.One end of the support beam of housing is connected to the cardinal principle center of the adjacent both sides of fixed end board angle of attachment.Therefore, can make the minimizing deformation at the cardinal principle central part in cooling procedure, this cooling procedure is injection-molded final stage.Therefore, strengthened the intensity of fan external frame columnar portion, thereby can form fan external frame columnar portion with good circularity.As a result, because fan external frame columnar portion has very high circularity, so the external diameter of impeller can be set at a value near fan external frame columnar portion internal diameter.Therefore, can increase the external diameter of impeller.For this reason, can improve the ability of impeller air blast.Owing to can establish the space between impeller and the fan external frame columnar portion narrower, therefore can reduce air leakage rate from this space.Therefore, this fan assembly can be realized air blast efficiently.In addition, lead-in wire can be kept by the lead-in wire holding part, and this lead-in wire holding part has the shape of very little windage loss.Like this, this fan assembly may make lead-in wire contact impeller hardly, and has a large amount of air blast and a spot of windage loss.
Read following detailed description the in detail in conjunction with the drawings, these and other purpose, feature and advantage of the present invention will become more clear.
Description of drawings
Fig. 1 shows the sectional view of the fan electromotor of first embodiment of the invention;
Fig. 2 is the worm's eye view of the fan motor case shown in Fig. 1;
Fig. 3 is the stereogram of the fan electromotor major component shown in Fig. 1;
Fig. 4 is the worm's eye view according to the housing of the fan electromotor of second embodiment of the invention;
Fig. 5 is the worm's eye view according to the housing of the fan electromotor of third embodiment of the invention;
Fig. 6 is the worm's eye view according to the housing of the fan electromotor of fourth embodiment of the invention;
Fig. 7 shows the reference drawing of basic structure of the housing of fan electromotor; And
Fig. 8 shows the reference drawing of basic structure of the housing of another fan electromotor.
Embodiment
Introduce the preferred embodiment (below be called first embodiment) of fan assembly of the present invention below with reference to Fig. 1-3.Fig. 1 is the sectional view that summarily shows fan assembly.Fig. 2 is the worm's eye view of the fan assembly housing shown in Fig. 1.Fig. 3 is the amplification stereogram of fan assembly major component shown in the Fig. 1 that sees from housing bottom.Note, axially be meant such direction in the specification, that is, the rotation axis of fan electromotor extends (direction shown in the arrow A 1 among Fig. 1) along this direction in this fan assembly.
This fan assembly 1 comprises impeller 2, fan electromotor 4, printed circuit board (PCB) 6 and housing 8.Printed circuit board (PCB) 6 has control circuit, is used to control the electric power that is fed to this fan electromotor 4 and the rotation of impeller 2.Housing 8 supports fan motors 4 and printed circuit board (PCB) 6.
In addition, housing 8 comprises: motor supporting portion 8a, and it is located at the middle part, is used for supports fan motor 4 and printed circuit board (PCB) 6; Fan outer frame portion 8b, it is located at the outer circumferential side of motor supporting portion 8a and fan electromotor 4 with predetermined interval; And four support beam 8c1-8c4, be used for motor supporting portion 8a and fan outer frame portion 8b are linked together.These parts of housing 8 are made into integration by synthetic resin by injection-molded.Motor supporting portion 8a has circular external shape substantially.Support beam 8c1-8c4 along the circumferential direction extends with fixing interval between motor supporting portion 8a and fan outer frame portion 8b.
Fan outer frame portion 8b comprises fan external frame columnar portion 8b1, and its two ends are opened and centered on motor supporting portion 8a and fan electromotor 4 from outer circumferential side.In addition, a pair of end plate 8b2 and 8b3 are set, they have square outer rim (being made up of four sides) at two that the are positioned at fan external frame columnar portion 8b1 outer surfaces of opening the place, end.These four angles to end plate 8b2 and 8b3 are provided with cylindricality joint 8b4, and it connects two end plate 8b2 and 8b3.This joint 8b4 is provided with through hole 8b5 vertically.The square one side that forms end plate 8b2 and 8b3 outer rim is slightly greater than the diameter of a circle that forms fan external frame columnar portion 8b1.Through hole 8b5 is when fan assembly 1 is fixed to the precalculated position and the tapped hole that uses.Each of four angles of two end plate 8b2 and 8b3 all is formed with inclined surface in a side that is connected to columnar portion 8b1.In addition, shown in the enlarged view of Fig. 3, be formed on the inclined surface of end plate 8b3 along the groove 8e that radially extends of fan electromotor 4, this inclined surface is located between support beam 8c1 and the joint 8b4.The outer end of groove 8e becomes very narrow and is communicated to end plate 8b3 side.Lead-in wire 10 opening portions by this groove 8e are engaged and are kept.
One end of each among four support beam 8c1-8c4 all is connected to the center (among Fig. 2 be a some A) of fan outer frame portion 8b corresponding to a side that connects end plate 8b3 adjacent angular, and the other end extends from this position to the center of rotation of fan electromotor 4, thereby is connected on the 8a of motor supporting portion.Support beam 8c1-8c4 is a band-like plate, and this band-like plate has very little thickness and predetermined width.
Fan electromotor 4 has stator and printed circuit board (PCB) 6, and this stator and printed circuit board (PCB) 6 are installed on the outer surface of cylinder supporting portion 8a1, and the coil of this stator is welded on the pad (land) of printed circuit board (PCB) 6.Bearing means is fixed on the inner circumferential surface of cylinder supporting portion 8a1 and supports one.This has the rotor that comprises impeller 2.The magnet that drives usefulness is located on the inner circumference of rotor by yoke, and this magnet is relative with stator.Printed circuit board (PCB) 6 is electrically connected to an end of lead-in wire 10 to be connected to external power supply, and the other end of lead-in wire 10 is drawn to fan outer frame portion 8b one side by groove 8e.Although this lead-in wire 10 has two lines in this example, it also can have one or three or more lines according to concrete control circuit or lead-in wire.When electric current from external power supply by going between 10 when being fed to stator, produce driving moment by magnetic interaction between stator and magnet, thereby make rotor rotation and impeller 2 suck air to produce air stream.The air stream that produces is axial by the space between fan outer frame portion 8b and the support beam 8c1-8c4 along fan electromotor 4.
Below, will introduce above-mentioned lead-in wire holding part 9.Lead-in wire holding part 9 comprises: arm 9a, and its one of them side from the otch 8a2 of motor supporting portion 8a extends to fan outer frame portion 8b side; With point 9b, it from the tip of arm 9a to support beam 8c1 lateral bending song.Arm 9a has plate-like shape (as strut), and its thickness is roughly identical with support beam 8c1-8c4, and its width is littler than support beam 8c1-8c4, and its length is roughly half of support beam 8c1-8c4.Arm 9a has a base portion on the 8a of motor supporting portion, this base portion is thicker than point.Lead-in wire keeps the width of recess 9b1 and arm 9a about equally, and its length is slightly less than arm 9a.It is the twice of arm 9a and side-prominent to impeller 2 that lead-in wire keeps the thickness of recess 9b1, and wherein a recess is formed on the thickness direction.This lead-in wire keeps the degree of depth and the width of recess 9b1 very approaching, thereby two lead-in wires 10 can fully be contained in wherein.Lead-in wire keeps recess 9b1, otch 8a2 and groove 8e roughly to be positioned on the same line.Lead-in wire keeps the roughly middle part between motor supporting portion 8a and fan outer frame portion 8b of recess 9b1.
Lead-in wire 10 is located such that the part that is connected to printed circuit board (PCB) 6 exposes from otch 8a2.Lead-in wire 10 guides by lead-in wire maintenance recess 9b1 and to groove 8e from otch 8a2, thus the side surface of being drawn end plate 8b3.When drawing lead-in wire 10 the time, keeping forming opening 8a3 between recess 9b1 and the otch 8a2 at lead-in wire is of great use.For example, when 10 the end of will going between was welded to the printed circuit board (PCB) 6 that is fixed in advance on the 8a of motor supporting portion, lead-in wire 10 inserted carrying out welding operation from opening 8a3 and otch 8a2, thereby printed circuit board (PCB) 6 is connected on the lead-in wire 10 fully.In addition, to be connected to lead-in wire 10 printed circuit board (PCB) 6 by connector is installed on the 8a1 of cylinder supporting portion, then 9b1 is side directed to the maintenance recess that goes between from opening 8a3 when lead-in wire 10, even thereby go between 10 at one end have connector its also can easily be pulled out the time, the connector side of lead-in wire 10 is drawn from the bottom side (front side of paper Fig. 2) of motor supporting portion 8a.
In addition, pull out the direction of lead-in wire 10 substantially perpendicular to lead-in wire maintenance recess 9b1.Because opening is narrower in the outer end of groove 8e, even therefore move when opening is inserted into groove 8e when lead-in wire 10, going between 10 can not break away near groove 8e yet.In addition, the bottom surface that lead-in wire keeps recess 9b1 along the such plane of the axial ratio of housing 8 more to outside fix, joint and the bottom surface of groove 8e the plane (bottom side of housing 8 Fig. 3 shown in) by wherein of this plane by wherein being formed with printed circuit board (PCB) 6 and lead-in wire 10.Therefore, lead-in wire 10 keeps the surface friction drag at recess 9b1 place to increase at lead-in wire, thereby makes lead-in wire 10 be difficult to motion.
In addition, lead-in wire holding part 9 is located on the 8a of motor supporting portion, and is located at the inboard in the space between motor supporting portion 8a and the fan outer frame portion 8b.Because the air stream by this inboard, space has the flow velocity that is lower than by the air stream in this outside, space, even therefore air stream is run into obstacle (lead-in wire holding part 9), flow losses are also very little.Notice that although lead-in wire holding part 9 has caused resistance of air, it has or not from the outstanding shape of motor supporting portion 8a and is connected to structure on the fan outer frame portion 8b, similar support beam 8c1-8c4.Therefore, it is very little to become the zone that air stream hinders (in the plane with axially relative zone), and the resistance of air of the holding part 9 that goes between is very little.Similarly, 10 become resistance of air although go between, its zone that is exposed in this space is compared still quite little with the situation that support beam broadens in order to comprise groove.Therefore, the resistance of air of lead-in wire 10 is still very little.10 pairs of resistance of air influences of lead-in wire holding part 9 and lead-in wire are very little.
The end of each support beam 8c1-8c4 all is connected near the some A of fan outer frame portion 8b, thereby housing 8 is molded as and is difficult to be out of shape and have very high molded precision.Its reason will be illustrated with reference to reference drawing shown in Figure 7.
The structure of housing 80 shown in Figure 7 is to make four support beam 8c1-8c4 of the housing 8 in the present embodiment along circumferentially moving 45 degree (four support beams shown in Fig. 7 are represented with 80c1-80c4).When this housing 80 by injection-molded when being molded as by synthetic resin, the columnar portion 80b1 of this housing 80 can have thick of the some B that has end plate 80b2 and 80b3 and not have the thin portion of the some A of end plate 80b2 and 80b3, they along the circumferential direction mix setting.This housing 80 near the some B of columnar portion 80b1 with near an A, compare and can shrink greatly.Therefore, pull to the some B (shown in arrow y1) of both sides near the some A of columnar portion 80b1 by the effect of intilted stress (shown in arrow y2), thereby columnar portion 80b1 may be molded as very poor circularity.Therefore, in the fan assembly with this housing 80, consider the amount of deformation when molded, the external diameter of impeller must be very little, thereby the outer end of impeller does not contact with the interior perimeter surface of columnar portion 80b1.Like this, may damage the air blast performance of impeller.In addition, the space between impeller and the columnar portion 80b1 becomes very big, thereby may increase the air leakage from this space.Therefore, this fan assembly does not have good air blast usefulness.
On the contrary, in the housing 8 of present embodiment, the institute that four support beam 8c1-8c4 are connected to fan external frame columnar portion 8b1 has on the A, as shown in Figure 2.Therefore, support beam 8c1-8c4 supports the stress that produces when the hardening of resin to absorb mutually, thereby can suppress the distortion of fan external frame columnar portion 8b1.Therefore, fan external frame columnar portion 8b1 can be molded into good circularity, thereby the external diameter of impeller 2 can be made as the internal diameter near this fan external frame columnar portion 8b1.Like this, owing to increased the external diameter of impeller 2, therefore can improve the air blast performance of impeller 2.In addition, owing to the space between impeller 2 and the fan external frame columnar portion 8b1 can be set at a very little value, therefore can reduce air leakage from this space.Therefore, this fan assembly 1 can be realized very high air blast usefulness.
In addition, the fan outer frame portion 8b side of each support beam 8c1-8c4 is connected near the some A of fan outer frame portion 8b, thereby does not have the joint of support beam to be formed on the inclined surface at four angles of fan outer frame portion 8b.Therefore, air stream is in this inclined surface smooth flow, thereby can improve air blast usefulness.
In addition, although see that from above-mentioned mouldable angle the setting of support beam 8c1-8c4 is favourable, if but adopt lead-in wire by as the structure of drawing, the then outside that goes between and may fall housing 81 with reference to one of four support beams shown in Figure 8 of figure (81c1 among Fig. 8).In this case, when among office equipment etc. this fan assembly being set, must guarantee to be used to pull out by the upper lateral part of fan assembly the gap of this lead-in wire, this lead-in wire places the upper lateral part of this fan assembly.This will become a limiting factor of this office equipment of design.
On the contrary, in the present embodiment, lead-in wire 10 is drawn to the bight of end plate 8b3 by using restricting means 9 as shown in Figure 2.Therefore, be used to keep to go between 10 groove 8e can be set to end plate 8b3 and goes up and can not make its size to increase.In addition, lead-in wire 10 can be held and the outside that can not fall housing 8.In addition, support beam 8c1-8c4 does not have the steering channel that is used to go between, so support beam can not become resistance of air.
As mentioned above, the fan assembly 1 of present embodiment can be realized high-effect air blast with the external diameter of increase impeller 2 and owing to support beam 8c1-8c4 can not become the obstruction that is blown into air by the precision that improves molded shell 8.In addition, lead-in wire 10 can be drawn and can not be increased the resistance of air blast by the external diameter that increases housing 8.
Notice that although the end of each support beam 8c1-8c4 all is positioned at the middle part (some A) of adjacent angular, it can move a bit from an A, as long as it is near the cardinal principle same section that is used to obtain same effect an A.Housing 8 has such structure, and wherein a pair of end plate 8b2 and 8b3 are located on two opening ends of fan external frame columnar portion 8b1.Also can adopt another kind of structure, its end plates is located in two opening ends of fan external frame columnar portion 8b1 one and goes up or the middle part of fan external frame columnar portion 8b1.Owing to produced the same difference of shrinkage factor, therefore adopted the support beam 8c1-8c4 of present embodiment can produce distortion hardly.Although, see that from the angle of installing tapped hole can also be located on two or more angles, and outer rim is not limited to square because tapped hole (through hole 8b5) is located on four angles and makes end plate 8b2 and 8b3 have square outer rim.In this case, consider distortion, preferably support beam is made as away near the tapped hole.
Below, will mainly introduce the fan assembly of second embodiment of the invention and first embodiment's difference with reference to figure 4.Fig. 4 shows the worm's eye view of second embodiment's fan assembly housing, and identical reference character represent with Fig. 2 in identical part.
Difference between the fan assembly of present embodiment and first embodiment's the fan assembly is the holding part that goes between.First embodiment's lead-in wire holding part 9 has such structure, wherein lead-in wire keeps recess 9b1 to be located at the point of an arm 9a, and the guide portion 29 in the present embodiment has such structure, and wherein two arm 29a1 and 29a2 are side-prominent to the fan outer frame portion from the two side ends of the otch 8a2 of motor supporting portion 8a.The point 29b of arm 29a1 and 29a2 keeps recess 29b1 to connect by lead-in wire.The edge limited opening 8a2 ' of lead-in wire holding part 29 and otch 8a2.Lead-in wire keeps recess 29b1 to be provided with the recess that is similar to first embodiment.The lead-in wire (not shown) keeps recess 29b1 to draw to the fan outer frame portion by lead-in wire in the same manner as in the first embodiment.If printed circuit board (PCB) is installed on the (not shown) of cylinder supporting portion, Yin Xian connection work is just undertaken by opening 8a2 ' insertion by going between so.If will be installed on the cylinder supporting portion, so preferably before connector is drawn by opening 8a2 ', printed circuit board (PCB) is installed on the cylinder supporting portion by the printed circuit board (PCB) that connector is connected on the lead-in wire.
In the fan assembly of present embodiment, lead-in wire does not pass through support beam 8c1-8c4, but draws by the space between support beam 8c1-8c4 and motor supporting portion 8a.In addition, the fan assembly of present embodiment has the feature identical with first embodiment's fan assembly, and the holding part that promptly goes between 29 is located at motor supporting portion 8a side.Particularly, because lead-in wire keeps recess 29b1 to be supported by two arm 29a1 and 29a2, the holding part 29 that therefore goes between has high rigidity and is fixed firmly on the 8a of motor supporting portion.Like this, even a certain obstacle bumps with lead-in wire holding part 29, housing 8 self or whole wind fan device also can prevent destroyed.
Below, will mainly introduce the fan assembly of third embodiment of the invention and first embodiment's difference with reference to figure 5.Fig. 5 shows the worm's eye view of the 3rd embodiment's fan assembly housing, and identical reference character represent with Fig. 2 in identical part.
Difference between the fan assembly of present embodiment and first embodiment's the fan assembly is the holding part that goes between.First embodiment's lead-in wire holding part 9 has such structure, wherein it is installed on the 8a of motor supporting portion, thereby it is side-prominent to the fan outer frame portion, and the lead-in wire holding part 39 in the present embodiment has such structure, thereby wherein arm 39a is installed on the fan outer frame portion 8b side-prominent to motor supporting portion 8a.Lead-in wire keeps recess 39b1 to be made as point 39b from arm 39a to support beam 8c1 lateral bending song.One recess is formed among the lead-in wire maintenance recess 39b1 and is positioned on the straight line that connects otch 8a2 and groove 8e.The lead-in wire (not shown) is to keep recess 39b1 with the similar mode of first embodiment by lead-in wire and to draw to fan outer frame portion 8b.
The fan assembly of present embodiment has the feature identical with first embodiment's fan assembly, and promptly lead-in wire does not pass through support beam 8c1-8c4, but by the space between support beam 8c1-8c4 and motor supporting portion 8a.
Below, will mainly introduce the fan assembly of fourth embodiment of the invention and the 3rd embodiment's difference with reference to figure 6.Fig. 6 shows the worm's eye view of the 4th embodiment's fan assembly housing, and identical reference character represent with Fig. 5 in identical part.
The difference of the fan assembly of present embodiment and the 3rd embodiment's fan assembly is the holding part that goes between.The 3rd embodiment's lead-in wire holding part 39 has such structure, wherein lead-in wire keeps recess 39b1 to be located at the tip of an arm 39a, and the lead-in wire holding part 49 of present embodiment has such structure, thereby wherein two arm 49a1 and 49a2 are installed to fan outer frame portion 8b and go up side-prominent to motor supporting portion 8a.The point 49b of arm 49a1 and 49a2 keeps recess 49b1 to connect by lead-in wire.Like this, arm 49a1 and 49a2 and fan outer frame portion 8b define opening.Lead-in wire keeps recess 49b1 to be provided with the recess that is similar to the 3rd embodiment.The lead-in wire (not shown) keeps recess 49b1 to draw to fan outer frame portion 8b in the mode identical with the 3rd embodiment by lead-in wire.
In the fan assembly of present embodiment, lead-in wire does not pass through support beam 8c1-8c4, but draws by the space between support beam 8c1-8c4 and motor supporting portion 8a.The fan assembly of present embodiment has the feature identical with the 3rd embodiment's fan assembly, and the holding part that promptly goes between 49 is located at fan outer frame portion side.Yet two arm 49a1 and 49a2 support this lead-in wire and keep recess 49b1 especially, thereby lead-in wire holding part 49 has high rigidity and is fixed firmly on the 8a of motor supporting portion.Like this, even a certain obstacle bumps with lead-in wire holding part 49, housing 8 self or whole wind fan device also can prevent destroyed.
Although introduced the preferred embodiment that is used to realize fan assembly of the present invention above, the present invention is not limited to these embodiments, and in scope of the present invention or spirit various modifications can be arranged.
For example, although the housing 8 among each embodiment all has the structure that comprises end plate 8b2 and 8b3, it also can only be the fan external frame columnar portion 8b1 that does not have end plate.In addition, although four support beam 8c1-8c4 extend along the direction that is parallel to end plate 8b2 and 8b3 outer rim, also can become in the end of motor supporting portion 8a side and favour and be not parallel to circumferencial direction.In addition, lead-in wire holding part 9,29,39 and 49 lead-in wire keep the cross section of recess and arm preferably to form curved surface, with the resistance of air of further reduce to go between holding part 9,29,39 and 49.In addition, although each lead-in wire of lead-in wire holding part 9,29,39 and 49 keeps recess all to be provided with recess, if go between 10 not to impeller 2 lateral movements, lead-in wire keeps the shape of recess just to be not limited to recess so.That is, such structure can be set: a side be provided with sidewall structure, have inclined surface structure, be provided with plat surface with the structure that increases contact resistance between lead-in wire 10 and the plat surface rather than recess or use fixed block to be maintained fixed the structure that part and lead-in wire keep the lead-in wire 10 between the recess.
In addition, although be example with so-called axial fan device all among above-mentioned each embodiment, wherein air is along the axial flow of fan electromotor 4, and the present invention also can be applied to centrifugal fan device or cross flow ejector half fan assembly.
Fan assembly of the present invention can obtain following effect.
Promptly, because the lead-in wire in fan assembly of the present invention is not to pass through support beam, but, must be very wide before therefore can in being enough to guarantee the scope of necessary intensity, reduce as much as possible with the width of the support beam that comprises the holding part that goes between by the space between motor supporting portion and the fan outer frame portion.Owing to can reduce the resistance of air of the air that flows through this space, therefore can improve the air blast characteristic.The moving direction of lead-in wire is by the restriction of lead-in wire holding part, and therefore lead-in wire can not move to impeller side and contact impeller.The lead-in wire holding part is made as from the motor supporting portion side-prominent to the fan outer frame portion, or side-prominent to the motor supporting portion from the fan outer frame portion.The lead-in wire holding part does not have the structure that is similar to support beam, is about to the motor supporting portion and is connected to the fan outer frame portion, and therefore this lead-in wire holding part does not increase resistance of air.Particularly, if side-prominent to the fan outer frame portion thereby the lead-in wire holding part is located on the motor supporting portion, this lead-in wire holding part has less resistance of air so, and this is to have very little flow velocity because of the air stream with the collision of lead-in wire holding part.
In addition, fan assembly of the present invention has the arm of a lead-in wire holding part, thereby the lead-in wire holding part is very little, and the lead-in wire holding part is located at the very little motor supporting portion side of flow velocity of air stream.Like this, can reduce resistance of air.
If the lead-in wire holding part has the wherein structure of two arm supporting wire maintenance recesses, the holding part that goes between so just can be located on the motor supporting portion rigidly.In addition, because the lead-in wire holding part is located at the very little motor supporting portion side of flow velocity of air stream, therefore can reduce resistance of air.
When the lead-in wire holding part had wherein the structure that two arm supporting wires keep recesses, the lead-in wire holding part just can be set to the fan outer frame portion rigidly.
The structure of fan assembly of the present invention has good air blast feature, and promptly the fixed end board is located at by on the injection-molded housing outer rim of being made by synthetic resin.In addition, because the distortion when molded shell is very little, therefore can reduces the space between housing and the impeller, thereby can improve the air blast characteristic.
Although intactly described the present invention in the mode of example with reference to the accompanying drawings, should be appreciated that variations and modifications are conspicuous for those skilled in the art.Therefore, unless such variation and modification have broken away from the scope of the present invention that is defined by the following claims, they all will be interpreted as comprising in the present invention.
Claims (14)
1, a kind of fan assembly comprises:
Fan electromotor, it comprises rotor portion and stationary part, this rotor centers on the pivot axis of motor by the electric power that is fed to stator through lead-in wire from external power supply;
Impeller, thus it is fixed on the rotor portion generates air stream when motor rotates; And
Housing, it comprises: the fan outer frame portion; The discoid motor supporting portion, it in rotational direction stretches out from the cardinal principle center that is positioned on the motor rotation axis line, thus the fan attachment motor; At least three support beams are used for the motor supporting portion is fixedly connected to the fan outer frame portion; The lead-in wire holding part, be used for keeping lead-in wire, this lead-in wire holding part comprises that arm and lead-in wire keep recess, one end of this arm is fixed on the motor supporting portion, this lead-in wire maintenance recess is located at the other end of arm, and is drawn fan assembly from the lead-in wire of fan electromotor by lead-in wire holding part and fan outer frame portion.
2, fan assembly as claimed in claim 1 is characterized in that, described arm is made of at least one strut.
3, fan assembly as claimed in claim 1, it is characterized in that, the printed circuit board (PCB) that is used to control fan electromotor is fixed to the motor supporting portion, and lead-in wire is connected on the printed circuit board (PCB) and by lead-in wire holding part and fan outer frame portion and draws to the outside of fan assembly.
4, fan assembly as claimed in claim 1 is characterized in that, described housing is mainly made by the material that comprises synthetic resin by injection-molded.
5, fan assembly as claimed in claim 4, it is characterized in that, described housing has four support beams, described fan outer frame portion comprises fan external frame columnar portion and four fixed end boards of an encirclement fan electromotor, this fixed end board is formed on the external peripheral surface of fan external frame columnar portion, so that the fan outer frame portion forms square configuration in plan view, an end of each support beam all is connected in the cardinal principle at adjacent two angles of fixed end board in the heart.
6, fan assembly as claimed in claim 5 is characterized in that, the fixed end board of the described housing of arranging along lead-in wire holding part bearing of trend comprises and is used to keep the slot part that goes between, and lead-in wire is drawn to the outside of fan assembly by this slot part.
7, fan assembly as claimed in claim 6 is characterized in that, the printed circuit board (PCB) that is used to control fan electromotor is fixed to the motor supporting portion, and lead-in wire is connected on this printed circuit board (PCB) and draw to the outside of fan assembly by lead-in wire holding part and slot part.
8, a kind of fan assembly comprises:
Fan electromotor, it comprises rotor portion and stationary part, this rotor centers on the pivot axis of motor by the electric power that is fed to stator through lead-in wire from external power supply:
Impeller, thus it is fixed on the rotor portion generates air stream when motor rotates; And
Housing, it comprises: the fan outer frame portion: the discoid motor supporting portion, it in rotational direction stretches out from the cardinal principle center that is positioned on the motor rotation axis line, thus the fan attachment motor; At least three support beams are used for the motor supporting portion is fixedly connected to the fan outer frame portion; The lead-in wire holding part, be used for keeping lead-in wire, this lead-in wire holding part comprises that arm and lead-in wire keep recess, one end of this arm is fixed on the fan outer frame portion, this lead-in wire maintenance recess is located at the other end of arm, and is drawn fan assembly from the lead-in wire of fan electromotor by going between holding part and fan outer frame portion.
9, fan assembly as claimed in claim 8 is characterized in that, described arm is made of at least one strut.
10, fan assembly as claimed in claim 8, it is characterized in that, the printed circuit board (PCB) that is used to control fan electromotor is fixed to the motor supporting portion, and lead-in wire is connected on the printed circuit board (PCB) and by lead-in wire holding part and fan outer frame portion and draws to the outside of fan assembly.
11, fan assembly as claimed in claim 8 is characterized in that, described housing is mainly made by the material that comprises synthetic resin by injection-molded.
12, fan assembly as claimed in claim 11, it is characterized in that, described housing has four support beams, described fan outer frame portion comprises fan external frame columnar portion and four fixed end boards of an encirclement fan electromotor, this fixed end board is formed on the outer surface of fan external frame columnar portion, so that the fan outer frame portion forms square configuration in plan view, an end of each support beam all is connected in the cardinal principle at two angles of vicinity of fixed end board in the heart.
13, fan assembly as claimed in claim 12 is characterized in that, the fixed end board of the described housing of arranging along lead-in wire holding part bearing of trend comprises and is used to keep the slot part that goes between, and lead-in wire is drawn to the outside of fan assembly by this slot part.
14, fan assembly as claimed in claim 13, it is characterized in that, the printed circuit board (PCB) that is used to control fan electromotor is fixed to the motor supporting portion, and lead-in wire is connected on this printed circuit board (PCB) and draw to the outside of fan assembly by lead-in wire holding part and slot part.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003344686 | 2003-10-02 | ||
| JP2003344686 | 2003-10-02 | ||
| JP344686/2003 | 2003-10-02 | ||
| JP2004277883A JP2005127319A (en) | 2003-10-02 | 2004-09-24 | Fan device |
| JP2004277883 | 2004-09-24 | ||
| JP277883/2004 | 2004-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603630A CN1603630A (en) | 2005-04-06 |
| CN1322237C true CN1322237C (en) | 2007-06-20 |
Family
ID=34655827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100807407A Expired - Fee Related CN1322237C (en) | 2003-10-02 | 2004-10-08 | Structure of fan device for lead out |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20050180867A1 (en) |
| JP (1) | JP2005127319A (en) |
| CN (1) | CN1322237C (en) |
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| CN101783542A (en) * | 2010-03-31 | 2010-07-21 | 无锡市明盛强力风机有限公司 | Fixing device of variable-frequency ventilation motor |
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| CN1900616B (en) * | 2005-07-19 | 2010-12-22 | 乐金电子(天津)电器有限公司 | Air blower |
| CN100463307C (en) * | 2005-08-23 | 2009-02-18 | 建凖电机工业股份有限公司 | Switch plug for wire terminal |
| DE102005044294A1 (en) * | 2005-09-16 | 2007-04-05 | Behr Gmbh & Co. Kg | Frame with ring-shaped attachment structure |
| WO2007043119A1 (en) | 2005-09-30 | 2007-04-19 | Fujitsu Limited | Fan device |
| US7261431B2 (en) * | 2006-01-05 | 2007-08-28 | Dynaeon Industrial Co., Ltd. | Fan frame |
| US7471026B2 (en) * | 2006-03-13 | 2008-12-30 | Isca Innovatons, Llc | Brushless electric motor |
| JP2008071855A (en) * | 2006-09-13 | 2008-03-27 | Fujitsu Ltd | Electronic apparatus, and printed circuit board unit |
| US8033799B2 (en) * | 2008-07-09 | 2011-10-11 | Nidec Corporation | Cooling fan unit and method for drawing out lead wires thereof |
| US8696332B2 (en) * | 2009-06-15 | 2014-04-15 | Sunonwealth Electric Machine Industry Co., Ltd | Heat-dissipating fan |
| US8297950B2 (en) * | 2009-08-10 | 2012-10-30 | Sunonwealth Electric Machine Industry Co., Ltd. | Fan |
| CN102444594A (en) * | 2010-10-14 | 2012-05-09 | 鸿富锦精密工业（深圳）有限公司 | Fan |
| JP5433643B2 (en) | 2011-07-15 | 2014-03-05 | 三菱重工業株式会社 | Electric supercharging device and multistage supercharging system |
| JP2013127219A (en) * | 2011-12-19 | 2013-06-27 | Nippon Densan Corp | Fan |
| JP2013130094A (en) * | 2011-12-21 | 2013-07-04 | Nippon Densan Corp | Centrifugal fan |
| JP5316665B2 (en) * | 2012-03-30 | 2013-10-16 | 富士通株式会社 | Fan device |
| DE102015210647A1 (en) * | 2015-06-10 | 2016-12-15 | Mahle International Gmbh | centrifugal blower |
| JPWO2017188436A1 (en) * | 2016-04-28 | 2019-03-07 | 日本電産サーボ株式会社 | Blower |
| JP2018014869A (en) * | 2016-07-23 | 2018-01-25 | 日本電産株式会社 | Fan motor and manufacturing method for the same |
| CN106481587B (en) * | 2016-09-12 | 2018-07-10 | 郑州云海信息技术有限公司 | A kind of fan system and server |
| JP2018148608A (en) * | 2017-03-01 | 2018-09-20 | 日本電産株式会社 | Base unit, motor, and blower |
| CN107247495A (en) * | 2017-06-20 | 2017-10-13 | 柳州译海网络科技有限公司 | A kind of computer heat emission fan |
| JP2019138255A (en) * | 2018-02-14 | 2019-08-22 | 日本電産サンキョー株式会社 | Pump device |
| CN110242597B (en) * | 2018-03-07 | 2021-07-06 | 昆山广兴电子有限公司 | Fan with cooling device |
| JP2022175000A (en) * | 2021-05-12 | 2022-11-25 | 山洋電気株式会社 | reversible fan |
| CN117989154A (en) * | 2022-10-31 | 2024-05-07 | 全亿大科技（佛山）有限公司 | Fan frame and fan |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1603630A (en) | 2005-04-06 |
| JP2005127319A (en) | 2005-05-19 |
| US20050180867A1 (en) | 2005-08-18 |
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Granted publication date: 20070620 |