CN108547798A - Fan - Google Patents

Abstract

A kind of fan,It includes nozzle and pedestal,Pedestal includes the outer housing for having side wall,The impeller chimney with air intake and air outlet slit in outer housing,The impeller with air intake and air outlet slit in impeller chimney,The motor that driving impeller rotates about the axis,Side wall includes at least one air intake,Nozzle includes inner passage and mouth,It is characterized in that,Pedestal further includes the noise reduction component being located in outer housing,Noise reduction component includes the first noise elimination part,First noise elimination part is located at the lower section of the air intake of impeller and is separated by a distance with impeller along the axis,The distance is between 1mm to 45mm,First noise elimination part is gradually increased by the sectional area that the plane perpendicular to the axis is cut along the axis downwardly direction,Wherein,First noise elimination part is at least partly located at the lower section of the air intake of impeller chimney.This kind of fan has lower noise.

Description

Fan

Technical field

The present invention relates to a kind of fans.In particular, but not exclusively say, the present invention relates to domestic fan, such as desk fan, For generating air circulation and air-flow in room, office or other domestic environments.

Background technology

Traditional domestic fan generally comprises the motor for enclosing the blade group rotated about the axis and driving blade group rotary work. The movement of air-flow and cycle produce " air-cooled ", since so that user is experienced nice and cool by convection current and evaporation are dispersed for heat Effect.

The fan of existing various sizes and shape.The diameter of ceiling fan is typically larger than l meters, and usually to be suspended on ceiling Mode install, so that room is cooled down with the air-flow for providing downward.Bracker fan usually can be placed arbitrarily and can be carried.Tower wind Fan generally includes shell that is elongated, extending vertically, and covered with the blade group for generating air-flow, using swing mechanism with rotary column It the outlet of formula fan can be with the broad space in inswept room so as to air-flow.

The defect of such fan is that the air-flow that rotating fan blades group generates is generally uneven.This is because There are changing factors in fan blade surface or the surface faced out.These changing factors cause to generate uneven or " surge " gas Stream, this air-flow can feel a series of air impulsive motions and user allowed not feel well.In addition, such wind There may be noises for fan, and generated noise aggravates such as constantly using in a home environment.

On November 26th, 2014, patent publication No. was the Chinese patent application of CN104165134A（Application No. is： 201310186724.5）A kind of fan is disclosed, this kind of fan includes：The nozzle of base portion and installation on the base portion, it is described Pedestal includes the outer housing with side wall, the impeller chimney with air intake and air outlet slit in outer housing, is located at leaf The motor that the impeller with air intake and air outlet slit in wheel cover is rotated about the axis with driving impeller, the side wall includes extremely A few air intake, the nozzle includes the inner passage and mouth for receiving the air-flow from pedestal, and wherein air-flow is logical Mouth is crossed to project from fan.

Noise caused by the fan of this kind of structure, impeller and motor can be to the lower section not stealpass of the air intake of impeller Send, and the lower section of the air intake to impeller transmission noise have much by below impeller bottom plate or other objects Directly reflection returns to impeller, these, which are directly mirrored, returns to the noise of impeller and can influence quickly to rotate work in some cases The dynamic property of the impeller of work may cause impeller to generate the noise of bigger, or even utter long and high-pitched sounds, and so that fan is transmitted outward total Noise significantly increases.

Invention content

The invention aims to provide-lower the fan of kind of noise, to overcome disadvantages mentioned above.This kind of fan, it includes Nozzle and pedestal, the pedestal include the outer housing with side wall, have air intake and air outlet slit in outer housing Impeller chimney, the motor that rotates about the axis of the impeller with air intake and air outlet slit in impeller chimney, driving impeller, The side wall includes at least one air intake, and the nozzle includes the inner passage and use for receiving the air-flow from pedestal In the mouth of transmitting air-flow, which is characterized in that the pedestal further includes the noise reduction component being located in outer housing, the noise reduction component Including the first noise elimination part, the first noise elimination part is located at the lower section of the air intake of impeller and is separated centainly along the axis and impeller Distance, the distance is between 1mm to 45mm, section that the first noise elimination part is cut by the plane perpendicular to the axis Product gradually increases along the axis downwardly direction, wherein the air that the first noise elimination part is at least partly located at impeller chimney enters The lower section of mouth.

When this kind of fan work, noise caused by impeller and motor can constantly be transmitted to the lower section of impeller, in impeller The lower section of air intake the first noise elimination part is set, which separates 1mm to 45mm along the axis and impeller Distance, and the sectional area of the first noise elimination part gradually increases along the axis downwardly direction.The first of this kind of structure disappears Its average height of line is larger and closer with impeller or motor, thus can effectively absorb impeller and motor and be transmitted to the lower section of impeller Noise.Due to its side surface of the first noise elimination part of this kind of structure and the angle of cut of the axis and be not equal to 90 ゜, such impeller and More difficult directly reflected by the first noise elimination part of noise that motor is transmitted to the lower section of impeller returns to impeller, especially the first noise elimination part Itself has the ability for absorbing noise, thus can be directly mirrored and return to the noise of impeller and will substantially reduce, it is instead in this way Being emitted back towards influence of the reduction for the noise for being transmitted to impeller to the dynamic property of the impeller of quick rotary work will also substantially reduce, favorably In the noise for preventing impeller from generating bigger, such as be conducive to prevent to utter long and high-pitched sounds in some cases.Therefore, the first of this kind of structure Noise elimination part is applied not only to absorb the noise that impeller and motor are transmitted to the lower section of impeller, but also for reducing impeller and motor institute The noise of generation is directly mirrored the quantity for the noise for returning to impeller during being transmitted to the lower section of impeller.

In addition, the first noise elimination part of this kind of structure is arranged so so that the distance between the first noise elimination part and impeller very little, And hardly limit the air intake that air-flow normally enters impeller；First noise elimination part of i.e. this kind structure is arranged so highly beneficial Noise caused by impeller and motor is eliminated or reduced in the first noise elimination part, impeller is normally flowed into without limiting air-flow Air intake.First noise elimination part of this kind of structure, which is arranged so, can allow sufficient air to suck the pedestal, thus to impeller Almost free air suck stream is provided with fan.

Preferably, first noise elimination part has the inside that part is located at impeller chimney, has the air that part is located at impeller chimney to enter The lower section of mouth.

First noise elimination part is usually less than 5mm, preferably less than 1mm at a distance from the air intake of impeller chimney.First Noise elimination part is smaller at a distance from impeller chimney to be more conducive to absorb noise caused by impeller and motor, but is also possible to that gas can be influenced Stream is normal to be flowed into the air intake of impeller chimney.

In general, the distance between the first noise elimination part and impeller are more than between the first noise elimination part and the air intake of impeller chimney Distance.Preferably, between the distance between the first noise elimination part and impeller and the first noise elimination part and the air intake of impeller chimney away from It is poor between 3mm to 40mm from it.It is highly preferred that the distance between the first noise elimination part and impeller and the first noise elimination part and impeller The difference of the distance between air intake of cover is between 5mm to 25mm.

First noise elimination part along the axis and impeller separate at a distance from be preferably ranges between 1mm to 20mm between, it is more excellent Selection of land is between 1mm to 10mm.

First noise elimination part can be taper, can be frustoconical, can be general conical, can also be substantially frustum Shape.First noise elimination part of these shapes can not only effectively absorb the noise that impeller and motor are transmitted to the lower section of impeller, but also More difficult be directly mirrored of the noise that impeller and motor are transmitted to the lower section of impeller can be made to return to impeller, be very beneficial for keeping away in this way The dynamic property for exempting from reduction impeller, to advantageously reduce the noise of fan.

First noise elimination part can be cone, can be conical butt, can be conical shaped, can also be substantially Conical butt can also be other shapes.

Preferably, the noise reduction component includes the second noise elimination part of patty, wherein the second noise elimination part is located at the first noise reduction It is below portion and integral with the first noise elimination part.The area that sound-absorbing part is increased with the noise reduction component of the second noise elimination part, has Conducive to the effect of raising noise reduction.

Preferably, the noise reduction component includes the third noise elimination part for the annular for surrounding the setting of the first noise elimination part, wherein third Noise elimination part and the first noise elimination part are integral.Since the noise caused by impeller and motor is easy to disappear with third in the first noise elimination part Multiple reflections are formed between line, thus the noise reduction component of this kind of structure can absorb more noises, to improve its noise reduction Effect.

In a preferred embodiment, the noise reduction component includes the second noise elimination part of patty and is set around the first noise elimination part Set annular third noise elimination part, wherein the second noise elimination part be located at it is below the first noise elimination part and integral with the first noise elimination part, Third noise elimination part and the second noise elimination part are integral.

First noise elimination part includes acoustic foam.Acoustic foam may include mineral wool, can also include sponge, may be used also To include other quieter materials.

Preferably, first noise elimination part includes acoustic foam and is used to support the support element of acoustic foam.With support First noise elimination part of part is conducive to improve its stability and provides stable erasure effect.The support element is usually by plastics institute It is formed.

In a preferred embodiment, the fan includes holder, wherein nozzle is arranged on holder, holder setting On pedestal.

Nozzle preferably limited hole, the partial air around fan are worn by the air-flow suction emitted from the mouth of nozzle Cross the through-hole.

Nozzle preferably includes nozzle ring, nozzle highly preferable between 100mm to 600mm, more preferably Ground is between 200mm to 500mm.

The mouth of nozzle preferably includes slot-shaped mouth, and width of the mouth in exit is usually located at 0.5mm to 5mm Between, it is preferably located between 1mm to 3mm.

Impeller can be centrifugal impeller, can also be mixed flow impeller, it is therefore preferable to mixed flow impeller；The usual position of rotating speed of impeller Between 800rpm to 9000rpm, it is preferably located between 1200rpm to 7000rpm.Motor can be DC Brushless Motor, It can also be alternating current motor.

Description of the drawings

Fig. 1 is the schematic diagram of the fan of the present invention.

Fig. 2 is the side view of fan shown in FIG. 1.

Fig. 3 is the sectional view of the nozzle segment of line A-A interceptions in Fig. 2.

Fig. 4 is the sectional view of the holder part of line A-A interceptions in Fig. 2.

Fig. 5 is the sectional view of the base part of line A-A interceptions in Fig. 2.

Fig. 6 is a kind of replacing structure of base part shown in fig. 5.

Fig. 7 is another replacing structure of base part shown in fig. 5.

Fig. 8 is another replacing structure of base part shown in fig. 5.

Fig. 9 is side view of the fan shown in FIG. 1 when nozzle is tilted forward to a certain position.

Figure 10 is side view of the fan shown in FIG. 1 when nozzle is tilted backwards to a certain position.

Specific implementation mode

Figure l is from the schematic diagram of the fan of the present invention of device forward observation, and Fig. 2 is the side view of fan shown in figure l. Include pedestal 3, the holder 2 on pedestal 3 and the nozzle being arranged on holder 2 from can be seen that fan 100 in Fig. 1 and Fig. 2 1。

Pedestal 3 includes bottom base 10 and the top base 8 on bottom base 10.Upper base portion 8 includes air intake 9, air Entrance 9 is the form in the multiple holes being formed on the side wall of top base outer housing.Bottom base 10 includes that user is operable multiple Control knob 11,12 and 13.Air outside fan is inhaled by air intake 9 in top base 8.

The lower end of holder 2 and the upper end of top base 8 are fixed, and with reference to figure 4, and holder 2, which includes one, has air intake 16 Input end, two with air outlet slit 15 outlet ends and inner passage 17.

According to Fig. 1 and with reference to figure 3, nozzle 1 includes outer housing 6, two input end, mouths with air intake 4 of annular Portion 7 and inner passage 14 simultaneously define through-hole 5, two of nozzle 1 input ends with air intake 4 respectively with holder 2 two A outlet end rotation connection with air outlet slit 15, can make nozzle 1 carry out rotation inclination relative to holder 2, so as to this in this way Kind fan changes the direction of transmitting air-flow in perpendicular.

In the present embodiment, mouth 7 is slot-shaped mouth, and width of the mouth 7 in exit is about 1.5mm, annular Shell 6 defines that through-hole 5, mouth 7 are located at the front of nozzle and are arranged to emit air-flow towards before fan.

Fig. 5 illustrates the internal structure of pedestal 3.From figure 5 it can be seen that pedestal 3 is including bottom base 10 and has shell The top base 8 of body 21 is provided with the device for generating air-flow in the outer housing 21 of top base 8, this is used to generate air-flow Device includes impeller chimney 22, impeller 23 and the motor 24 for driving 23 rotary work of impeller.Impeller 23 includes wheel hub 41, is arranged and is taking turns Multiple blades 42 on hub and the shield 43 around wheel hub and blade setting, impeller 23 include air intake 39 and air outlet slit 40, impeller 23 is located in impeller chimney 22, and impeller chimney 22 includes air intake 34 and air outlet slit 35, and impeller 23 can be revolved around axis X Turn.

Motor 24 is contained in motor shell 25.Motor shell 25 includes upper part 26 and lower part 27, upper surface portion 26 are divided to be fixed with lower part 27 by screw and be fixed therein motor 24.The shaft 38 of motor 24 is passed through motor Part 27 is located at the hole of bottom below shell 25, to allow impeller 23 to be connected in shaft 38.The upper surface of motor shell 25 Part 26 further includes multiple fixed links 31, and motor 24 is fixed by multiple fixed links 31 of motor shell 25 with impeller chimney 22.

In the present embodiment, impeller 23 and impeller chimney 22 are configured to be supported by impeller chimney 22 when impeller 23 and motor shell 25 When, the outer surface of the shield 43 of impeller 23 is very close to the inner surface of impeller chimney 22, but is not exposed to the inner surface, impeller 23 It is substantially coaxial with impeller chimney 22.

It is provided with cable punching hole on impeller chimney 22（It is not drawn into figure）, in a fixed link 31 of motor shell 25 It is provided with cable punching hole（It is not drawn into figure）, the cable punching hole on impeller chimney 22 is aligned with the cable punching hole in fixed link 31 makes electricity Cable may pass through, to facilitate cable to be connected on motor 24 from circuit device 37.In the present embodiment, motor shell 25, impeller chimney 22 and impeller 23 preferably formed by plastics.

Ring type seal 32 is additionally provided in outer housing 21, which is located at motor shell 25 and top base Between 8 outer housing 21, to prevent for generating air-flow caused by the device of air-flow along motor shell 25 and impeller chimney 22 With the air intake 39 of the clearance backflow of outer housing 21 to impeller 23.

Impeller chimney 22 is supported by multiple supporting members 29.In Figure 5 it will be clear that supporting member 29 is a bullet Spring element.In the present embodiment, the quantity of supporting member 29 be 4, i.e., the quantity of spring element be 4, spring element it is upper It holds and is formed in convex block 30 on 22 outer surface of impeller chimney to fix, the lower end of spring element is fixed in be connect with outer housing 21 On pedestal 28.Since supporting member 29 is spring element, spring element can effectively be absorbed from some of motor 24 and impeller 23 Vibration and noise, otherwise these vibration and noises are easy passes to outer housing 21 by impeller chimney 22 and amplifies.

Bottom base 10 is used to engage the surface where fan 100.Pedestal 3 further includes for making top base 8 relative to lower base The swing mechanism that seat 10 swings back and forth, which includes syncmotor 36, and the operation of swing mechanism is by 37 sound of circuit device Control knob 13 is pressed using family to control.Hunting range is preferably between 60 ° and 120 °, and swing mechanism is arranged to every point Clock executes 3 to 6 swing periods.Cable for supplying power to fan（Do not draw）It is passed through on bottom base 10 Hole extends.

In the present embodiment, motor 24 is DC Brushless Motor, and the rotating speed of motor can respond user by circuit device 37 Operation and control button 12 changes.

Noise reduction component 46 is located in the outer housing 21 of top base 8, and noise reduction component 46 includes the first noise elimination part 47, the first noise reduction Portion 47 is located at the lower section of the air intake 39 of impeller 23, and the first noise elimination part 47 is conical shaped and symmetrical about axis X, and first By sectional area that the plane perpendicular to axis X is cut, downwardly direction gradually increases noise elimination part 47 along axis X, the shape in section Shape is circle, and the height of the first noise elimination part 47 is 50mm, and the first noise elimination part 47 is in a diameter of 100mm of bottom end, the first noise elimination part 47 separated along axis X with impeller 23 at a distance from be 5mm, the first noise elimination part 47 air intake with impeller chimney 22 along axis X 34 distances separated are 0.

In the present embodiment, the first noise elimination part 47 is formed by mineral wool, which is fixed by adhesive In on bottom plate 49.In order to improve the stability of the first noise elimination part 47, the first noise elimination part 47 can also be including mineral wool and for branch Support the support element of mineral wool.

In Figure 5 it can easily be seen that the first noise elimination part 47 positioned at the lower section of the air intake 39 of impeller 23 can absorb impeller 23 and the noise that transmits downwards of motor 24, the side surface of the first noise elimination part 47 of the conical shaped and the angle of cut of axis X are not Equal to 90 ゜, the noise that such impeller 23 and motor 24 are transmitted to the lower section of impeller 23 is difficult to by the first directly reflection of noise elimination part 47 Impeller 23 is returned to, the noise for being directly mirrored and returning to impeller 23 can be substantially reduced, advantageously reduces or avoids to quick The influence of the dynamic property of the impeller 23 of rotary work, to advantageously reduce total noise of fan.

It is also easy to find out in Figure 5, although the distance between the first noise elimination part 47 of the conical shaped and impeller 23 are very It is small, but hardly limitation air-flow normally enters the air intake 39 of impeller 23.First noise elimination part 47 of this kind of structure is arranged so, The distance between itself and impeller 23 very little are very beneficial for that noise caused by impeller 23 and motor 24 is eliminated or dropped It is low.

In fig. 5 it may be seen that its is compact-sized for the first noise elimination part 47 of this kind of structure, being conducive to manufacture and installation makes With.

In Figure 5 it can further be seen that being additionally provided with the second noise reduction component 45 in the outer housing 21 of top base 8, second disappears Sound component 45 is circular ring shape, and 45 wound impeller cover 22 of the second noise reduction component, which is arranged, simultaneously to be fixed with the outer surface of impeller chimney 22, this Two noise reduction components 45 are also formed by mineral wool.The second noise reduction component 45 is added to be conducive to absorb the noise in outer housing 21.

In order to operate fan 100, user presses lower button 11, responds the operation, and circuit device 37 activates motor 24 to rotate Impeller 23.The rotation of impeller 23 bypasses air through air intake 9 and enters in the outer housing 21 of pedestal 3.Impeller 23 is formed by gas Stream is transported to by the inner passage 17 of holder 2 in nozzle 1.

In nozzle 1, air-flow is advanced in inner passage 14.The air-flow advanced in inner passage 14 is sent out by mouth 7 Penetrate, the partial air around nozzle rolls up suction by the air-flow emitted from mouth 7, the air-flow emitted in this way from mouth 7 with rolled up The air-flow of suction is bonded the total air flow emitted forward from nozzle 1.

Fig. 6 shows a kind of replacing structure of base part shown in fig. 5.In fig. 6 it can be seen that the base of the embodiment Seat 3 is much like with pedestal 3 shown in fig. 5, and only the shape of the first noise elimination part 47 is different.In the present embodiment, first disappears Line 47 is generally frustoconical.First noise elimination part 47 of this kind of shape is arranged in the lower section of the air intake 39 of impeller 23, Also the noise that impeller 23 and motor 24 transmit downwards can be absorbed, and the noise transmitted downwards can be made to be difficult to be directly mirrored passback To impeller 23, it is also beneficial to that the influence of the dynamic property to the impeller 23 of quick rotary work is reduced or avoided, to be conducive to Reduce total noise of fan.

Fig. 7 shows another replacing structure of base part shown in fig. 5.In figure 7 it is seen that the embodiment Pedestal 3 and pedestal 3 shown in fig. 5 are also much like, and only noise reduction component 46 is different.In the present embodiment, noise reduction component 46 It is made of the first noise elimination part 47 and the second noise elimination part 48, the first noise elimination part 47 is conical shaped, and the second noise elimination part 48 is circle Cheese, wherein the second noise elimination part 48 is located at below the first noise elimination part 47 and integral with the first noise elimination part 47.The present embodiment The noise that noise reduction component 46 can not only be such that impeller 23 and motor 24 transmits downwards, which is difficult to be directly mirrored, returns to impeller 23, and Due to increasing the area of sound-absorbing relative to noise reduction component 46 shown in fig. 5, be conducive to the effect for improving its noise reduction.

Fig. 8 shows another replacing structure of base part shown in fig. 5.It can be seen in fig. 8 that the embodiment Pedestal 3 and pedestal 3 shown in fig. 5 are also much like, and only noise reduction component 46 is different.In the present embodiment, noise reduction component 46 Be made of the first noise elimination part 47, the second noise elimination part 48 and third noise elimination part 44, the first noise elimination part 47 be conical shaped, second Noise elimination part 48 is patty, and third noise elimination part 44 is annular, wherein the second noise elimination part 48 is located at below the first noise elimination part 47 simultaneously Integral with the first noise elimination part 47, third noise elimination part 44 is arranged around the first noise elimination part 47 and the second noise elimination part 48 and disappears with second Line 48 is integral.Equally, the noise that this kind of noise reduction component 46 can not only be such that impeller 23 and motor 24 transmits downwards is difficult to straight Reversed be emitted back towards is transmitted to impeller 23, and since the noise caused by impeller 23 and motor 24 is easy in the first noise elimination part 47 and Multiple reflections are formed between two noise elimination parts 48 and third noise elimination part 44, thus more noises can be absorbed, to be conducive to carry Its high erasure effect.

Fig. 9 illustrates side view of the fan 100 shown in FIG. 1 when nozzle 1 is tilted forward to a certain position, Figure 10 displayings Side view of the fan 100 shown in FIG. 1 when nozzle 1 is tilted backwards to a certain position.It can be seen that from Fig. 9 and Figure 10 Nozzle 1 can make nozzle 1 never obliquity turns to obliquity relative to the rotation of holder 2, can make the air-out direction of nozzle 1 It changes in perpendicular, to meet the different demands of user.

While there has been shown and described that it is presently considered to be preferred the embodiment of the present invention, but it will be apparent that this field Technical staff can carry out various changes and improvement, without departing from the model of the present invention as defined in appended claims It encloses.

Claims (10)

1. a kind of for generating the fan of air-flow, the fan includes nozzle and pedestal, and the pedestal includes have side wall outer Shell, the impeller chimney with air intake and air outlet slit in outer housing, in impeller chimney with air intake The motor rotated about the axis with impeller, the driving impeller of air outlet slit, the side wall includes at least one air intake, the spray Mouth includes the inner passage for receiving the air-flow from pedestal and the mouth for emitting air-flow, which is characterized in that the base Seat further includes the noise reduction component being located in outer housing, and the noise reduction component includes the first noise elimination part, and the first noise elimination part is located at impeller Air intake lower section and be separated by a distance with impeller along the axis, the distance between 1mm to 45mm it Between, the first noise elimination part is gradually increased by the sectional area that the plane perpendicular to the axis is cut along the axis downwardly direction Greatly, wherein the first noise elimination part is at least partly located at the lower section of the air intake of impeller chimney.

2. the fan as described in claim l, which is characterized in that first noise elimination part has the inside that part is located at impeller chimney, There is part to be located at the lower section of the air intake of impeller chimney.

3. the fan as described in claim l to one of 2, which is characterized in that first noise elimination part is taper.

4. the fan as described in claim l to one of 2, which is characterized in that first noise elimination part is frustoconical.

5. the fan as described in claim l to one of 2, which is characterized in that first noise elimination part is general conical.

6. the fan as described in claim l to one of 2, which is characterized in that first noise elimination part is somewhat frusto-conical.

7. the fan as described in claim l to one of 2, which is characterized in that the noise reduction component further includes the second of patty Noise elimination part, wherein the second noise elimination part is located at below the first noise elimination part and integral with the first noise elimination part.

8. the fan as described in claim l to one of 2, which is characterized in that the noise reduction component further includes surrounding the first noise reduction The third noise elimination part of the annular of portion's setting, wherein third noise elimination part and the first noise elimination part are integral.

9. the fan as described in claim l to one of 2, which is characterized in that the noise reduction component further includes the second of patty The third noise elimination part of noise elimination part and the annular being arranged around the first noise elimination part, wherein the second noise elimination part is located at the first noise elimination part Below and integral with the first noise elimination part, third noise elimination part and the second noise elimination part are integral.

10. the fan as described in claim l to one of 2, which is characterized in that first noise elimination part includes acoustic foam and use In the support element of support acoustic foam.