CN107420323B - Fan - Google Patents

Abstract

The invention discloses a kind of fans, comprising: inner housing, outer housing and blower, the air duct for being provided with air-inlet cavity and being connected to air-inlet cavity in inner housing, air-inlet cavity have air inlet；The periphery of inner housing is arranged in outer housing, and it is connect with inner housing, outer housing is provided with air-out chamber, air-out chamber is connect with air duct, air-out chamber has air outlet, the hollow portion that front and back penetrates through is formed between inner housing and outer housing, hollow portion is spaced apart with air-inlet cavity, air outlet is located on the side wall towards hollow portion of air-out chamber, there is jet channel on the side wall towards hollow portion of air-out chamber, air in air-out chamber is ejected into hollow portion by jet channel, and air outlet is made of the open at one end of neighbouring hollow portion of jet channel；Blower is arranged in air-inlet cavity, and for the air entered in air-inlet cavity by air inlet to be blown into the air outlet ejection in air duct and from air-out chamber, blower includes centrifugal wind wheel.Fan according to the present invention, air output is big, outlet air is high-efficient and noise is small.

Description

Fan

This case be Chinese Patent Application No. be 2014101810538, applying date 2014-04-30, entitled " wind The divisional application of fan ".

Technical field

The present invention relates to appliance fields, more particularly, to a kind of fan.

Background technique

From outside it can be seen that the intracorporal blade of shell, when blade high speed rotation, may bring user centainly traditional fan Application risk, be in addition easy to gather dust and bad cleaning on blade.It is known for inventor in the prior art, have wear it is gloomy The bladeless fan of company.The air-flow for wearing gloomy bladeless fan enters from bottom, is compressed in the chamber of lower part by engine, And sprayed from the small gaps in the circular ring shape head on top, wherein the air entered in jet flow cavity from bottom can be divided into Two strands, turbulent flow easy to form in this way, to generate noise.

Summary of the invention

The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, one object of the present invention It is to propose a kind of fan, the fan is hidden completely by blade, and reduces noise.

Fan according to the present invention, comprising: inner housing is provided with air-inlet cavity in the inner housing and connects with the air-inlet cavity Logical air duct, the air-inlet cavity have air inlet；Outer housing, the outer housing are arranged in the periphery of the inner housing, and with institute Inner housing connection is stated, the outer housing is provided with air-out chamber, and the air-out chamber is connect with the air duct, and the air-out chamber has Air port is formed with the hollow portion that front and back penetrates through, the hollow portion and the air-inlet cavity between the inner housing and the outer housing It is spaced apart, the air outlet is located on the side wall towards the hollow portion of the air-out chamber, described in the direction of the air-out chamber There is jet channel, the air in the air-out chamber is ejected into the hollow portion by the jet channel on the side wall of hollow portion To guide air to blow out forward from the rear end of the hollow portion, the air outlet is by the jet channel adjacent to the hollow portion Composition open at one end；And blower, the blower are arranged in the air-inlet cavity, for it will be entered as the air inlet described in Air in air-inlet cavity is blown into the air duct and sprays from the air outlet of the air-out chamber, and the blower includes centrifugal wind wheel, The air duct is volute tongue air duct, and the rotation center of the centrifugal wind wheel and the center of the inner housing are concentric so that the centrifugation wind The wind of wheel blowout enters in the volute tongue air duct.

Fan according to the present invention be can't see blade outside fan, be ensure that outer by the way that blower to be located in air-inlet cavity The aesthetics of sight and dust can be prevented, and solve conventional fan due to fan high speed rotation bring application risk.And And driven into the air in air-inlet cavity by centrifugal wind wheel high speed and blown out from the air outlet of air-out chamber, air velocity is high, and pole The earth reduces noise.In addition, fan is compact-sized, air output is big, outlet air is high-efficient and wind-force is powerful and wind-force is powerful.

Optionally, the inner wall of the jet channel is formed as Coanda surface.

Still optionally further, the air outlet is located at the adjacent back end of the air-out chamber.

Optionally, the width of the jet channel is 1.2~5mm.

Preferably, the volute tongue air duct is two and revenue centre pair of described two volute tongue air ducts about the inner housing Claim, wherein each volute tongue air duct is connected to by a communication port with the air-out chamber.

Still optionally further, each volute tongue air duct extends and opposite from the center of the inner housing to the outer housing In being radially offset from for the inner housing.

Further, at least one wind deflector is equipped in each volute tongue air duct, at least one wind deflector prolongs It is identical as the extending direction in the volute tongue air duct to stretch direction.

Optionally, each wind deflector is located at one end of the neighbouring outer housing in the volute tongue air duct.

Optionally, the hollow portion is formed between the side wall and the outer housing in the volute tongue air duct.

Optionally, the inner housing includes the front housing being connected to each other and rear shell, is had in the rear shell recessed recessed forward Enter portion, the air inlet is located on the peripheral wall in the female portion.

Optionally, the female portion is formed as round and coaxial with the centrifugal wind wheel, and the outer diameter in the female portion is less than The internal diameter of the centrifugal wind wheel.

Optionally, the air inlet includes multiple, and the multiple air inlet uniformly divides on the peripheral wall in the female portion Cloth.

Further, each air inlet is corresponded on the inner wall of the rear shell to all have towards the wind wheel receiving portion The guide plate of internal stretch.

Optionally, the guide plate is formed as arc panel or inclined plate, or is formed by connecting by multistage straight panel and/or arc panel.

Further, the blower includes motor, and the fan further comprises: motor receiving portion, and the motor accommodates Portion is arranged in the female portion, and the motor is contained in the motor receiving portion.

Optionally, the motor receiving portion is formed as hollow barrel-type, and extends back from the bottom wall in the female portion.

Further, the rear shell further includes motor cover, the rear end open of the motor receiving portion, and the motor cover is removable It is connected to the rear end of the motor receiving portion with unloading the motor to be enclosed in the motor receiving portion.

Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.

Detailed description of the invention

Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:

Fig. 1 is the perspective view of fan according to an embodiment of the present invention；

Fig. 2 is the perspective view of another angle of fan shown in Fig. 1；

Fig. 3 is the front view of fan shown in Fig. 1；

Fig. 4 is the sectional view of the line A-A along Fig. 3；

Fig. 5 is the enlarged drawing in the portion B that Fig. 4 centre circle shows；

Fig. 6 is the rearview of fan shown in Fig. 1；

Fig. 7 is the sectional view of the line C-C along Fig. 6；

Fig. 8 is the rear shell of fan shown in Fig. 1 and the perspective view of centrifugal wind wheel；

Fig. 9 is the front view of rear shell shown in fig. 8 and centrifugal wind wheel；

Figure 10 is the perspective view of rear shell shown in fig. 8；

Figure 11 is the perspective view of another angle of rear shell shown in Figure 10；

Figure 12 is the front view of rear shell shown in Figure 10；

Figure 13 is the sectional view of the line D-D along Figure 12；

Figure 14 is the sectional view of the E-E line along Figure 12；

Figure 15 is the rearview of rear shell shown in Figure 10.

Appended drawing reference:

100: fan；

1: front housing；2: rear shell；21: air-inlet cavity；211: volute tongue air duct；2111: volute tongue；

22: wind deflector；23: hollow portion；24: communication port；

25: concave portion；251: air inlet；252: guide plate；253: motor receiving portion；254: through-hole；

26: Coanda surface；

3: outer housing；31: air-out chamber；311: jet channel；312: air outlet；

4: centrifugal wind wheel；5: motor；51: main shaft；6: motor cover.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.

In the description of the present invention, it is to be understood that, term " center ", " transverse direction ", " length ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise ", " axis To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings, be only for Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two It is a or more than two.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.

Fan 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Figure 15.

As Figure 1-Figure 4, fan 100 according to an embodiment of the present invention, including inner housing, outer housing 3 and blower.

The air duct for being provided with air-inlet cavity 21 in inner housing and being connected to air-inlet cavity 21 has air inlet 251 on air-inlet cavity 21, Air-inlet cavity 21 is generally located at the center of inner housing, and air duct is located at the periphery of air-inlet cavity 21, such as shows in the example of Fig. 1-Fig. 3 Two air ducts are gone out, two air ducts are connected to air-inlet cavity 21.It is appreciated that the quantity in air duct can be specific according to actual requirement Design, the present invention are not particularly limited this.

Outer housing 3 is formed generally as annular shape, and the periphery of inner housing is arranged in, and outer housing 3 is connect with inner housing, tool Body, the outer end in the air duct of the internal perisporium and inner housing of outer housing 3 is connected, and air-out chamber 31, air-out chamber 31 are provided in outer housing 3 It is connect with air duct, such as air-out chamber 31 is connected to by communication port 24 with air duct, the outer end that communication port 24 is formed in air duct is (i.e. separate One end of air-inlet cavity 21), air-out chamber 31 has air outlet 312.Blower is arranged in air-inlet cavity 21, and blower is used for will be by air inlet 251 air entered in air-inlet cavity 21 are blown into air duct and spray from the air outlet of air-out chamber 31 312.

When working as a result, wind enters in air-inlet cavity 21 from the air inlet 251 of inner housing, and quickly being rotated by blower will be high The air of speed is thrown in the air-out chamber 31 of outer housing 3 by air duct 211, air higher-pressure region is formed in air-out chamber 31, then high pressure For the air in area from 312 high speed ejection of air outlet, the high-speed air sprayed at this time drives the air around inner housing and outer housing 3 to blow Out.

Specifically, the hollow portion 23 that front and back penetrates through, hollow portion 23 and air-inlet cavity 21 are formed between inner housing and outer housing 3 It is spaced apart, air outlet 312 can be located on the side wall towards hollow portion 23 of air-out chamber 31.As shown in Figure 10, Figure 12 and Figure 15, It is separated from each other between the periphery of inner housing and the inner circumferential of outer housing 3 to limit above-mentioned hollow portion 23, it can from Figure 15 Out, in the transverse direction of fan 100, air-inlet cavity 21, air duct and hollow portion 23 generally comprise a complete circle, air outlet 312 with Hollow portion 23 is corresponding, in this way from the air in the hollow portion 23 in the high-speed air drive fan 100 that air outlet 312 sprays and outside The air of the outlet of shell 3 is blown out, thus the very big air output for increasing fan 100.It is appreciated that the shape of hollow portion 23 Shape and quantity can according to specific 100 structure of fan adaptive change so that fan 100 has better air-out effect.

Further, there is jet channel 311, air outlet 312 is by spraying on the side wall towards hollow portion 23 of air-out chamber 31 One end (for example, adjacent to one end of hollow portion 23 in Fig. 4 and Fig. 5) opening of the neighbouring hollow portion 23 in gas channel 311 is constituted, optional Ground, air outlet 312 are located at the adjacent back end of air-out chamber 31, and referring to Fig. 4 and Fig. 5, air-out chamber 31 is arranged in jet channel 311 The rear end at rear portion, the periphery wall of outer housing 3 can bend inwards and be located at the inside of the rear end of its internal perisporium forward to limit jointly Make jet channel 311, the air in air-out chamber 31 is ejected into hollow portion 23 to guide air from hollow by jet channel 311 The rear end in portion 23 is blown out forward.Jet channel 311 can guide the air in air-out chamber 31 to air outlet 312, and band as a result, The air at dynamic 100 rear portion of fan is blown out forward.Here, it should be noted that direction "inner" is referred to towards 3 center of outer housing Direction, opposite direction are defined as "outside", the i.e. direction far from 3 center of outer housing.

Optionally, blower includes centrifugal wind wheel 4, and air duct is volute tongue air duct 211, the rotation center and inner casing of centrifugal wind wheel 4 The center of body is concentric, and referring to Fig. 8 and Fig. 9, centrifugal wind wheel 4 and inner housing are coaxially arranged, so that the wind difference that centrifugal wind wheel 4 is blown out Into at least one volute tongue air duct 211.Preferably, volute tongue air duct 211 is two and two volute tongue air ducts 211 are about inner housing Revenue centre it is symmetrical, wherein each volute tongue air duct 211 is connected to by a communication port 24 with air-out chamber 31.Such as Fig. 8 and Figure 10 Shown, each volute tongue air duct 211 extends from the center of inner housing to outer housing 3 and being radially offset from relative to inner housing, connection Mouth 24 is formed on the periphery in correspondence volute tongue air duct 211 of rear shell 2, wherein volute tongue air duct 211 can relative to the radial direction of rear shell 2 To deviate along clockwise, can also deviate along counterclockwise.

Centrifugal wind wheel 4 is rotatably arranged in air-inlet cavity 21 by the driving of motor 5, and centrifugal wind wheel 4 will be entered by air inlet 251 Air in air-inlet cavity 21 is blown into volute tongue air duct 211 and sprays from the air outlet of air-out chamber 31 312.Reference Fig. 8 and Fig. 9, from The central axis of heart wind wheel 4 extends along the longitudinal direction, and centrifugal wind wheel 4 includes circular discs and the blade being located on the periphery of circular discs Portion, blade part include annular frame and are located in annular frame and multiple blades circumferentially, multiple blades are circumferentially equal Even distribution.Optionally, multiple hollow-out parts (not shown go out) is equipped in circular discs, to reduce the overall weight of centrifugal wind wheel 4.It is excellent Selection of land, centrifugal wind wheel 4 radially, the blade of centrifugal wind wheel 4 is located at the outside of air inlet 251 and is located at air outlet 312 Inside.

Wherein, a part of the generally volute shape of volute tongue air duct 211, specifically, volute tongue air duct 211 along from it is neighbouring from The directivity curve of one end of heart wind wheel 4 to the one end being connected to air-out chamber 31 extends, as shown in figure 9, the big bodily form of the curve shape One as volute shape, and in the two side walls in volute tongue air duct 211 is upper with volute tongue 2111, and the setting of volute tongue 2111 is in volute tongue One end of the neighbouring centrifugal wind wheel 4 in air duct 211, and protrude to be formed from the center in side wall towards a volute tongue air duct 211, due to sky Gas can be by volute tongue air duct 211 during flowing into air-out chamber 31 from air-inlet cavity 21,211 side wall and volute tongue in volute tongue air duct Under 2111 collective effect, the air in air-inlet cavity 21 can be flowed by the extending direction in volute tongue air duct 211, so that air can be with Higher flow velocity by communication port 24 enter air-out chamber 31 in, in other words, when centrifugal wind wheel 4 with lower rotational speed drive into When air in wind chamber 21 is got rid of into volute tongue air duct 211, it can also be entered by the air in volute tongue air duct 211 with higher flow velocity Air-inlet cavity 21, air-out chamber 31 is interior to form air higher-pressure region, and then the air of higher-pressure region ensure that by 312 high speed ejection of air outlet The air-out effect of fan 100.As a result, by setting volute tongue air duct 211, centrifugal wind wheel 4 can work under lower revolving speed, from And the requirement to centrifugal wind wheel 4 and motor 5 is reduced, cost is saved, and reduce noise.

The air in air-inlet cavity 21 drives via centrifugal wind wheel 4 and is entered in air-out chamber 31 by volute tongue air duct 211 as a result, Volute tongue air duct 211 plays the role of guiding and gathering to the air thrown away by centrifugal wind wheel 4, to improve going out for fan 100 Air quantity and outlet air efficiency.

Fan 100 according to an embodiment of the present invention is seen not outside fan 100 by the way that blower to be located in air-inlet cavity 21 To blade, it ensure that the aesthetics of appearance and dust can be prevented, and solve conventional fan due to fan high speed rotation band The application risk come.Moreover, being driven at a high speed into the air in air-inlet cavity 21 by centrifugal wind wheel 4 and from the air outlet of air-out chamber 31 312 blowouts, air velocity is high, and considerably reduces noise.In addition, fan 100 is compact-sized, air output is big, outlet air is imitated Rate is high and wind-force is powerful.

According to some embodiments of the present invention, the inner wall of jet channel 311 is formed as Coanda surface 26 so that air It is ejected into out of air-out chamber 31 in hollow portion 23 and air is guided to blow out forward.As shown in figure 5, after the internal perisporium of outer housing 3 One side surface of the periphery wall towards outer housing 3 at end is formed as such as coanda curved surface of Coanda surface 26 to generate coanda Effect, thus can be along the periphery towards outer housing 3 of the rear end of 3 internal perisporium of outer housing from the air that air outlet 312 sprays One side surface flow forward of wall, the air-out direction of fan 100 is substantially along the axial direction blowout of centrifugal wind wheel 4 at this time.In addition, when sky When gas is flowed along Coanda surface 26, windage minimum can be reached substantially, to reduce the noise of fan 100, is met The low noise demand of user.It should be noted that " Coanda effect " is that (such as water flow or air-flow refer here to sky to fluid Gas) by leaving original flow direction, it is changed to the tendency flowed with the body surface of protrusion.

Optionally, the width of jet channel 311 is 1.2~5mm.Thus, it is possible to control the air capacity of ejection.It is specifically counted Value can specifically be designed according to specific 100 structure of fan, with better air-out effect.

Further, referring to Fig. 8-Figure 10, Figure 12, volute tongue air duct 211 is interior to be equipped at least one wind deflector 22, at least one The extending direction of wind deflector 22 is identical as the extending direction in volute tongue air duct 211, that is to say, that on direction from inside to outside, often A wind deflector 22 is identical as the bending direction of 211 corresponding position of volute tongue air duct.Optionally, each wind deflector 22 is located at volute tongue air duct One end of 211 adjacent housings body 3.The wind in volute tongue air duct 211 can be preferably oriented to air-out chamber 31 by guiding rib as a result, Guarantee the air output of fan 100.Wherein, above-mentioned hollow portion 23 is formed between the side wall and outer housing 3 in volute tongue air duct 211.It can To understand, the quantity and concrete shape of guiding rib can be arranged according to actual requirement, with better guide effect.

As Figure 1-Figure 4, inner housing includes the front housing 1 being connected to each other and rear shell 2, and rear shell 2 is located at the rear side of front housing 1, And air-inlet cavity 21 is limited between rear shell 2 and front housing 1, air-inlet cavity 21 has air inlet 251, has at least one in air-inlet cavity 21 Volute tongue air duct 211.Wherein, air inlet 251 is formed in rear shell 2, and certainly, air inlet 251 is additionally formed on front housing 1 (figure It is not shown).Certainly, those skilled in that art are appreciated that the front housing 1 for the fan 100 that the present invention describes and rear shell 2 are also constituted Rectangle, ellipse or greater than shapes such as the polygons on four sides, the present invention is not especially limited this.

0- Figure 14 referring to Fig.1 has concave portion 25 recessed forward in rear shell 2, wherein air inlet 251 is located at concave portion On 25 peripheral wall, in this way in 4 rotation process of centrifugal wind wheel, air can enter directly into centrifugation when entering from air inlet 251 With high-speed motion therewith in the high speed rotation region that wind wheel 4 drives, in addition rear shell 2 is simple for structure, easily manufactured.Optionally, The center of concave portion 25 and centrifugal wind wheel 4 are coaxial.Preferably, concave portion 25 is formed as round, and the outer diameter of concave portion 25 is less than The internal diameter of centrifugal wind wheel 4, so that centrifugal wind wheel 4 can be set on concave portion 25, and the blade of centrifugal wind wheel 4 and concave portion 25 Air inlet 251 on peripheral wall diametrically, as Figure 8-Figure 10.

Optionally, air inlet 251 includes multiple, and multiple air inlets 251 are uniformly distributed on the peripheral wall of concave portion 25, by This makes air inlet uniformly further improve air intake efficiency and reduce noise.

In further embodiment of the present invention, as shown in fig. 10 and fig. 12, each air inlet is corresponded on the inner wall of rear shell 2 The guide plate 252 towards wind wheel receiving portion internal stretch is all had at 251, as a result, by setting guide plate 252, on the one hand may be used It is injured when preventing user from protruding into finger in chamber from rear shell 2 by the rotating vane of centrifugal wind wheel 4, on the other hand can guide Enter the flow direction of the indoor air of chamber from air inlet 251.In some optional examples wherein, guide plate 252 is formed as arc Plate.Preferably, multiple 252 shapes of guide plate and bending direction are all the same, it is possible thereby to make air along the bending of guide plate 252 Direction enters in chamber, to further improve the air inlet and the outlet efficiency of fan 100.In other optional examples, lead Corbel back slab 252 may be formed as inclined plate (not shown go out), radial skew of the middle swash plate relative to centrifugal wind wheel 4, i.e. inclined plate with Acute angle or obtuse angle are limited between the radial direction of centrifugal wind wheel 4 (not equal to 90 degree and 180 degree).It certainly wherein it is preferred that will The inclined direction of inclined plate is consistent.The present invention is not limited to above schemes, such as in still other example of the invention, guide plate 252 can also be the multistage plate being formed by connecting by multistage straight panel and/or arc panel.

Further, blower includes motor, below by motor 5 setting and structure be illustrated.Motor 5 is arranged to drive Around it, axis rotates dynamic centrifugal wind wheel 4 in the front-back direction, i.e., the main shaft 51 of motor 5 drives centrifugal wind wheel 4 to rotate.Specifically, As shown in Fig. 4, Fig. 6 and Fig. 7, centrifugal wind wheel 4 is connected on the main shaft 51 of motor 5.

As shown in Fig. 4, Fig. 6 and Fig. 7, fan 100 further comprises: motor receiving portion 253, and motor receiving portion 253 is arranged In concave portion 25, motor 5 is contained in motor receiving portion 253 and driving centrifugal wind wheel 4 rotates.Specifically, motor receiving portion 253 are formed as hollow barrel-type and extend back from the bottom wall of concave portion 25, and wherein motor 5 is contained in motor receiving portion 253. By setting concave portion 25 and motor receiving portion 253, the structure of rear shell 2 is simplified, integral product weight has been reduced and saves Manufacturing cost.

Further, rear shell 2 further includes motor cover 6, the rear end open of motor receiving portion 253, and motor cover 6 removably connects It connects in the rear end of motor receiving portion 253 motor 5 to be enclosed in motor receiving portion 253, as shown in Fig. 2, Fig. 4, Fig. 6 and Fig. 7. Wherein, the heat release hole that can also have at least one to be used to radiate to motor 5 in motor cover 6, such as multiple heat release holes can With multiple rows of multiple row arrangement, it is of course also possible to be regularly arranged arrangement with circumferential.Motor cover 6 and motor receiving portion 253 are detachable Ground connection, for example, screw are connected or are snapped connection.

Further, 0 and Figure 12 referring to Fig.1 is located at the region except motor receiving portion 253 on the bottom wall of concave portion 25 On be formed with perforative multiple through-holes 254 along the longitudinal direction, the inside of concave portion 25 is connected to air-inlet cavity 21 at this time, to enter the wind Partial air in chamber 21 can be entered in concave portion 25 by multiple through-holes 254, thus to the electricity in motor receiving portion 253 Machine 5 radiates, and then extends the service life of motor 5.

Optionally, outer housing 3 and rear shell 2 are interference fitted or ultrasonic bonding connection is integral, reach complete close as a result, The effect of envelope, it is only unimpeded at air outlet 312, to further improve the air output of fan 100.

In some embodiments, fan 100 is other than above-mentioned component, can also include pedestal (not shown go out) and support rod Part (not shown go out), supporting rod is connected on pedestal, at this point, motor 5 mentioned above, centrifugal wind wheel 4, front housing 1, rear shell 2 And outer housing 3 will constitute the nose assembly of fan 100.

In order to can change about 100 air-out direction of fan, in some embodiments of the invention, fan 100 is further It may include hinge luffing mechanism (not shown go out), hinge luffing mechanism includes interconnecting piece and hinge bracket, and interconnecting piece is pivotable Ground is connected on hinge bracket, for example, interconnecting piece is as pivotally connected to hinge bracket by pin shaft.Interconnecting piece removably connects It is connected in rear shell 2, such as fixed by screw and rear shell 2.Optionally, interconnecting piece screw is connected on motor 5.In this way, when connecting When socket part is rotated relative to hinge bracket around pin shaft, the rotation of motor cover 6 is driven, to drive above-mentioned nose assembly to rotate together, The air-out direction up and down of fan 100 can be changed.Optionally, interconnecting piece screw is connected to motor cover 6.

In addition, can also include in further embodiment of the invention to change the left and right air-out direction of fan 100 Oscillating mechanism (not shown go out), oscillating mechanism be connected with hinge bracket with drive hinge bracket can around hinge bracket axis direction It swings, i.e., driving motor 5, centrifugal wind wheel 4, front housing 1, rear shell 2 and outer housing 3 swing.Specifically, in supporting rod There is accommodation space, wherein oscillating mechanism is located in accommodation space in top.Optionally, hinge bracket is connected to oscillating mechanism Top.Optionally, oscillating mechanism includes the bi-directional synchronization motor of gear and driving gear gear motion.Wherein due to by gear and The oscillating mechanism of bi-directional synchronization motor form has been that will not be described in detail further shake herein known to those skilled in the art The specific structure of head mechanism.

Preferably, the center of gravity for the nose assembly being made of motor 5, centrifugal wind wheel 4, front housing 1, rear shell 2 and outer housing 3 with Pedestal thereby guarantees that the shelf-stability of fan 100 substantially on same vertical line.Such as in some optional examples, bottom The thickness at the rear portion of seat is greater than the thickness of its front, facilitates the steadily of centre of gravity of entire fan 100 in this way.

Next, describing the working principle of fan 100 according to an embodiment of the present invention with reference to Fig. 1-Figure 15.

As shown in Figure 1-Figure 3, pedestal and supporting rod support including motor 5, centrifugal wind wheel 4, front housing 1, rear shell 2 and The nose assembly of outer housing 3, and accommodate connection in supporting rod and bow for adjusting the hinge of the pitch angle of the nose assembly Face upward the oscillating mechanism of mechanism and the angle that swings for adjusting the nose assembly.

At work, as shown in Figure 4 and Figure 8, air enters in air-inlet cavity 21 from the air inlet 251 of rear shell 2, passes through volute tongue Guide plate 252 in air duct 211 and volute tongue air duct 211 introduces the air of entrance in air-out chamber 31 with predetermined direction, passes through Quickly rotation makes its ambient air high speed rotation to centrifugal wind wheel 4, and high-speed rotating air is thrown to rear shell 2 by centrifugal action In air-out chamber 31 between outer housing 3, air higher-pressure region is formed in air-out chamber 31, then the air of higher-pressure region is from air-out chamber 312 high speed ejection of air outlet of 31 rear ends, the high-speed air sprayed at this time drive the air around hollow portion 23 and outer housing 3 to blow Out.

Fan 100 according to an embodiment of the present invention as a result, conceals blade, appearance looks elegant and low noise, outlet air efficiency Height, and can according to require adjustment air-out direction.In addition, structure is simple, easily manufactured and at low cost.

Other of fan 100 according to an embodiment of the present invention are constituted and are operated for those of ordinary skills All be it is known, be not detailed herein.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description Point can be combined in any suitable manner in any one or more of the embodiments or examples.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this The range of invention is defined by the claims and their equivalents.

Claims (15)

1. a kind of fan characterized by comprising

Inner housing, the air duct for being provided with air-inlet cavity and being connected to the air-inlet cavity in the inner housing, the air-inlet cavity have into Air port；

Outer housing, the periphery of the inner housing is arranged in the outer housing, and connect with the inner housing, the outer housing setting There is air-out chamber, the air-out chamber is connect with the air duct, and the air-out chamber has air outlet, and the air outlet is located at the outlet air At the adjacent back end of chamber, be formed between the inner housing and the outer housing front and back penetrate through hollow portion, the hollow portion with The air-inlet cavity is spaced apart, and the air outlet is located on the side wall towards the hollow portion of the air-out chamber, the air-out chamber The side wall towards the hollow portion on there is jet channel, the inner wall of the jet channel is formed as Coanda surface, institute It states jet channel the air in the air-out chamber is ejected into the hollow portion to guide air from the rear end of the hollow portion It blows out forward, the air outlet is made of neighbouring the open at one end of the hollow portion of the jet channel；And

Blower, the blower are arranged in the air-inlet cavity, the air for will be entered in the air-inlet cavity by the air inlet It is blown into the air duct and is sprayed from the air outlet of the air-out chamber, the blower includes centrifugal wind wheel, and the air duct is volute tongue Air duct, the rotation center of the centrifugal wind wheel and the center of the inner housing are concentric so that the wind of the centrifugal wind wheel blowout enters In the volute tongue air duct.

2. fan according to claim 1, which is characterized in that the width of the jet channel is 1.2~5mm.

3. fan according to claim 1, which is characterized in that the volute tongue air duct is two and described two volute tongue air ducts Revenue centre about the inner housing is symmetrical, wherein each volute tongue air duct is connected by a communication port and the air-out chamber It is logical.

4. fan according to claim 3, which is characterized in that each volute tongue air duct from the center of the inner housing to The outer housing extends and being radially offset from relative to the inner housing.

5. fan according to claim 1, which is characterized in that at least one wind deflector is equipped in the volute tongue air duct, until The extending direction of a few wind deflector is identical as the extending direction in the volute tongue air duct.

6. fan according to claim 5, which is characterized in that each wind deflector is located at the volute tongue air duct adjacent to institute State one end of outer housing.

7. fan according to claim 1, which is characterized in that shape between the side wall and the outer housing in the volute tongue air duct At there is the hollow portion.

8. fan according to claim 1, which is characterized in that the inner housing includes the front housing being connected to each other and rear shell, There is concave portion recessed forward, the air inlet is located on the peripheral wall in the female portion in the rear shell.

9. fan according to claim 8, which is characterized in that the female portion is formed as round, and with the centrifugation wind Wheel is coaxial, and the outer diameter in the female portion is less than the internal diameter of the centrifugal wind wheel.

10. fan according to claim 8, which is characterized in that the air inlet includes multiple, and the multiple air inlet It is uniformly distributed on the peripheral wall in the female portion.

11. fan according to claim 8, which is characterized in that correspond to each air inlet on the inner wall of the rear shell Place all has the guide plate towards the air-inlet cavity internal stretch.

12. fan according to claim 11, which is characterized in that the guide plate is formed as arc panel or inclined plate, or by Multistage straight panel and/or arc panel are formed by connecting.

13. fan according to claim 8, which is characterized in that the blower includes motor, and the fan further wraps Include: motor receiving portion, the motor receiving portion are arranged in the female portion, and the motor is contained in the motor receiving portion It is interior.

14. fan according to claim 13, which is characterized in that the motor receiving portion is formed as hollow barrel-type, and from It extends back on the bottom wall in the female portion.

15. fan according to claim 13, which is characterized in that the rear shell further includes motor cover, and the motor accommodates The rear end open in portion, the motor cover are detachably connected to the rear end of the motor receiving portion so that the motor is enclosed in institute It states in motor receiving portion.