CN106870417B - Base and bladeless fan - Google Patents

Abstract

The invention discloses a base and a bladeless fan, wherein the base is used for the bladeless fan and comprises: the shell comprises an outer wall, and an air inlet is formed in the outer wall; the power system is arranged in the shell and is provided with an air inlet, and the power system is used for sucking air through the air inlet and establishing air flow; and the flow guide element is arranged in the outer wall and comprises a first flow guide surface, and the first flow guide surface gathers and extends from the air inlet to the air inlet so as to guide the air to flow from the air inlet to the air inlet. In the base, the first flow guide surface guides air to flow to the air inlet from the air inlet, so that the air entering the power system cannot or cannot easily form flocculated flow, the noise of the base can be reduced, and the user experience is improved.

Description

Base and bladeless fan

Technical Field

The invention relates to the field of bladeless fans, in particular to a base and a bladeless fan.

Background

Existing bladeless fans include a base. The base includes a housing and a power system disposed within the housing. The housing is formed with an air inlet through which, in operation, the power system draws air and establishes an air flow. However, when the power system sucks in air, a flocculation flow is easily formed, and thus, a large noise is generated.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a base and a bladeless fan.

The base of the embodiment of the invention is used for a bladeless fan, and comprises: a housing including an outer wall formed with an air inlet; the power system is arranged in the shell and is provided with an air inlet, and the power system is used for sucking air through the air inlet and establishing air flow; and the flow guide element is arranged in the outer wall and comprises a first flow guide surface, and the first flow guide surface is gathered and extended from the air inlet to the air inlet so as to guide the air to flow to the air inlet from the air inlet.

In some embodiments, the first flow guide surface is curved, and the curved surface includes an arc shape or a streamline shape.

In certain embodiments, the first flow directing surface extends continuously in a circumferential direction of the outer wall.

In some embodiments, the first flow guiding surface includes a top portion adjacent to the air inlet, and a distance between the top portion and the air inlet is in a range of 5-30 mm.

In some embodiments, the base includes a sound attenuating structure disposed within the outer wall, the sound attenuating structure defining a sound attenuating cavity surrounding the air inlet, the sound attenuating structure including a sound attenuating panel opposite the first flow directing surface, the sound attenuating panel defining a plurality of sound attenuating holes in communication with the sound attenuating cavity.

In some embodiments, the sound absorbing panel includes a second flow guiding surface opposite to the first flow guiding surface, the second flow guiding surface extends from the air inlet to the air inlet in a direction away from the first flow guiding surface, and the second flow guiding surface is arc-shaped or streamline-shaped.

In some embodiments, the muffling hole is cylindrical, and the diameter of the muffling hole ranges from 1 mm to 8 mm.

In some embodiments, a sound absorbing element is disposed within the sound-deadening chamber.

In some embodiments, the base includes a plurality of connecting ribs connecting the flow directing element and the sound attenuating structure, the plurality of connecting ribs being spaced circumferentially around the outer wall.

The bladeless fan of the embodiment of the invention comprises the base of any one of the above embodiments.

In the base and the bladeless fan provided by the embodiment of the invention, the first flow guide surface guides air to flow from the air inlet to the air inlet, so that the air entering the power system cannot or is not easy to form flocculation flow, the noise of the base can be reduced, and the user experience is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of a bladeless fan according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a base of an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a base of an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the housing of the base of an embodiment of the present invention;

FIG. 5 is a perspective view of a coupling structure of a guide member and a noise-reducing structure according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a connection structure of a guide member and a sound deadening structure according to an embodiment of the present invention.

Description of the main element symbols:

a bladeless fan 200;

a base 100;

the air conditioner comprises a shell 10, a bottom plate 11, an outer wall 12, an air inlet 121, an air inlet 1211, a partition plate 14, a through hole 141 and a vertical column 142;

the air conditioner comprises a power system 20, an impeller shell 21, an air inlet 211, a support 212, a connecting hole 2121, an impeller 22, a motor 23, a diffuser 24, a fin 241, an air outlet 242, a motor shell 25, an air passage 25a, a damping element 26 and an air outlet end 20a of the power system;

flow guide element 30, first flow guide surface 31, top 311;

the silencing structure 40, the silencing cavity 41, the silencing plate 42, the silencing hole 421 and the second flow guide surface 422;

a fan head 102, a nozzle 1021;

the connecting ribs 50.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1, a bladeless fan 200 according to an embodiment of the present invention includes a base 100 and a fan head 102. The fan head 102 is disposed on the base 100. When the bladeless fan 200 is in operation, the fan head 102 may blow air. Compared with the conventional fan, the bladeless fan 200 has no exposed fan blades, so that fingers and other parts of a user are not easy to be injured, and therefore the bladeless fan 200 has the characteristic of safety. In addition, the bladeless fan 200 has a small volume, so that it is easy for a user to clean the bladeless fan 200.

Referring to fig. 2 and 3, the base 100 includes a housing 10, a power system 20, a flow guiding element 30 and a sound attenuating structure 40.

Referring to fig. 4 and 5, the housing 10 includes a bottom plate 11 and an outer wall 12. The base plate 11 extends outwardly from the outer wall 12 so that the bladeless fan 200 can be stably supported on a support surface, such as a floor or a table top.

The outer wall 12 is annular and the flow directing element 30 is disposed within the outer wall 12. Preferably, the flow guide element 30 is arranged coaxially with the outer wall 12. The ring-shaped outer wall 12 makes the bladeless fan 200 more beautiful, and the surface area of the outer wall 12 can be increased to make the air inlet area larger. In addition, the coaxial arrangement of the outer wall 12 and the flow-directing element 30 makes the construction of the base 100 more compact.

The outer wall 12 is formed with an air inlet 121, and the air inlet 121 is formed with an array of air inlet holes 1211. Air intake 121 enables power system 20 to draw in air to establish an air flow such that bladeless fan 200 may create wind to meet a user's demand.

The intake holes 1211 are distributed in a circumferential direction of the outer wall 12. This allows the air inlet area of the air inlet 121 to be large, which is advantageous for increasing the flow of air into the base 100. In addition, air may be introduced from the periphery of the housing 10 to make the air flow into the base 100 more uniform, so that noise may be reduced when the air flows.

In order to make the outer wall 12 have sufficient strength to prevent the housing 10 from being damaged by accident such as falling, impact, etc., the air inlets 1211 are arranged in a plurality of arrays along the circumferential direction of the outer wall 12, and two adjacent arrays are spaced apart from each other. As shown in fig. 2, the outer wall 12 between the adjacent two arrays of inlet apertures 1211 is a continuous structure. In addition, this also facilitates the formation of the intake holes 1211, thereby improving the yield of the housing 10.

Specifically, the air inlet 121 is disposed near the bottom plate 11, so that the air moves from bottom to top to the power system 20 to shorten the path and resistance of the air, and therefore, the noise generated by the air flow can be reduced by disposing the air inlet 121 near the bottom plate 11.

The air inlet 1211 is circular, and the diameter of the air inlet 1211 is 1 to 3 mm. For example, the diameter of the intake holes 1211 is 2 mm. This can reduce noise generated when air flows while ensuring that the bladeless fan 200 sucks air normally.

In the same array of air inlets 121, the spacing between adjacent air inlets 1211 is 1-3 mm. Preferably, the interval between the adjacent two air intake holes 1211 is 2 mm. Thereby, noise generated when air flows can be reduced.

The housing 10 also includes a baffle 14 extending inwardly from the outer wall 12. The partition 14 is formed with a through hole 141, and the through hole 141 is coaxially disposed with the outer wall 12.

A plurality of posts 142 are fixedly disposed on the partition 14, and the posts 142 extend upward from the partition 14. A plurality of posts 142 are evenly spaced around the circumference of the bore 141. Preferably, the number of the columns 142 is, for example, 3, 4, etc. greater than 2.

Referring to fig. 3, a power system 20 is disposed in the housing 10, and the power system 20 is used for drawing air through the air inlet 121 to establish an air flow. The power system 20 includes an impeller housing 21, an impeller 22, a motor 23, a diffuser 24, and a motor housing 25.

The impeller housing 21 is mounted in the casing 10, and the impeller housing 21 is formed with an air inlet 211 communicating with the air inlet 121. Specifically, the outer circumferential surface of the impeller housing 21 is provided with a plurality of supports 212. The plurality of supports 212 are provided at intervals in the circumferential direction along the outer circumferential surface of the impeller housing 21.

The supporting member 212 has a connecting hole 2121. The impeller housing 21 passes through the through hole 141 and the post 142 passes through the connection hole 2121, so that the impeller housing 21 is bridged on the diaphragm 14. It will be appreciated that the number and location of the attachment holes 2121 correspond to the posts 142 to ensure that the impeller housing 21 can be mounted on the casing 10.

As explained above, the number of the columns 142 is greater than two, and the number of the connecting holes 2121 is the same as that of the columns 142, so that the impeller housing 21 is stressed more evenly, and the power system 20 can be stably erected on the casing 10.

In order to reduce the direct transmission of the vibration generated by the power system 20 to the housing 10, the generation of noise is reduced. The pillar 142 is sleeved with the shock absorbing member 26, and the shock absorbing member 26 passes through the connection hole 2121 so that the support member 212 can be supported on the shock absorbing member 26 to prevent the power system 20 from directly contacting the housing 10. The shock absorbing member 26 is a member having elasticity, such as a rubber member or a spring.

Some of the vibrations generated by the powertrain 20 may be absorbed and dissipated by the dampening member 26, thereby reducing the vibration transmitting housing 10 and thus reducing the generation of noise.

The impeller 22 is disposed within the impeller housing 21. The motor 23 is used to drive the impeller 22. Specifically, the motor 23 is located in the impeller housing 21, and an output shaft of the motor 23 is fixedly connected to the impeller 22, so that the motor 23 can drive the impeller 22 to rotate when operating.

When the impeller 22 rotates, a negative pressure may be generated around the impeller 22, so that air may be sucked from the air inlet 211, and the air may form a high-pressure air flow after being pressurized by the impeller 22.

A diffuser 24 is provided downstream of the flow generated by the impeller 22, and the diffuser 24 is connected to the impeller housing 21. The diffuser 24 can pressurize, decelerate, and despin the high velocity air stream generated by the impeller 22 to direct the high velocity air stream toward the fan head 102.

It will be appreciated that the diffuser 24 includes a plurality of vanes 241, and the plurality of vanes 241 can integrate the high-speed airflow generated by the impeller 22 and achieve a de-whirling effect, so that the airflow discharged from the air outlet 242 of the diffuser 24 is more gentle.

A motor housing 25 is formed outside the motor 23 and serves to fix the motor 23. The motor shell 25 and the motor 23 are arranged between the diffuser 24 and the impeller 22, and the motor shell 25 is connected with the impeller shell 21. The motor housing 25 prevents the motor 23 from wobbling during operation.

Specifically, a gas passage 25a is formed between the motor housing 25 and the impeller housing 21, and the gas passage 25a communicates with the diffuser 24. The air flow generated when the impeller 22 rotates flows toward the diffuser 24 through the air passage 25a, and flows out of the diffuser 24 through the diffuser 24 to enter the fan head 102.

Referring to fig. 3, 5 and 6, the flow guiding element 30 includes a first flow guiding surface 31, and the first flow guiding surface 31 converges and extends from the air inlet 121 to the air inlet 211 to guide the air flowing from the air inlet 121 to the air inlet 211.

Thus, the first guiding surface 31 guides the air to flow from the air inlet 121 to the air inlet 211, so that the air entering the power system 20 does not or is not easy to form a flocculated flow, thereby reducing the noise of the base 100 and improving the user experience.

It should be noted that the first guiding surfaces 31 converge and extend from the air inlet 211 to the air inlet 211 means that the first guiding surfaces 31 extend from the air inlet 211 to the air inlet 211, and the cross-sectional area of the guiding element 30 gradually decreases in the height direction of the base 100.

In order to reduce the resistance of the air flowing from the air inlet 121 to the air inlet 211, and to reduce the noise caused by the air, the first guiding surface 31 has a curved shape, such as an arc shape or a streamline shape.

As set forth above, the plurality of air inlets 121 are arranged along the circumference of the base 100 of the outer wall 12 such that air enters the base 100 from the periphery of the base 100. In order to better guide the air flowing from the air inlet 121 to the air inlet 211, the first flow guiding surface 31 continuously extends along the circumferential direction of the outer wall 12.

The first guide surface 31 includes a top portion 311 near the air inlet 211, and a distance D between the top portion 311 and the air inlet 211 ranges from 5mm to 30 mm. For example, D is 8mm, 13mm, 15mm, 20mm, 25mm, or the like.

In order to make the base 100 easier to manufacture, the outer wall 12 and the flow-guiding element 30 are detachably fixed to the base plate 11.

Referring to fig. 6, the silencing structure 40 is disposed in the outer wall 12, the silencing structure 40 forms a silencing cavity 41 surrounding the air inlet 211, the silencing structure 40 includes a silencing plate 42 opposite to the first flow guiding surface 31, and the silencing plate 42 is opened with a plurality of silencing holes 421 communicating with the silencing cavity 41.

In this way, the noise can enter the silencing chamber 41 through the silencing hole 421, and the noise is consumed in the silencing chamber 41 for many times, so that the noise transmitted to the outside of the base 100 can be reduced, and the noise reduction effect is achieved.

In this embodiment, the power system 20 extends into the muffling chamber 41 such that the muffling chamber 41 surrounds the air inlet 211.

In order to further enhance the noise reduction effect of the sound absorbing structure 40, a sound absorbing element (not shown) is disposed in the sound absorbing chamber 41. The sound attenuating element is, for example, a piece of cotton or the like made of a bulky material. The noise reduction element has a plurality of staggered pores, so that the noise reduction element has a good sound absorption effect, and the noise reduction performance of the bladeless fan 200 is further improved.

In one example, the muffling hole 421 is cylindrical, and the diameter of the muffling hole 421 is in the range of 1-8 mm.

For example, the muffling hole 421 has a diameter of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, or the like.

In this embodiment, the sound-absorbing plate 42 includes a second flow guide surface 422 opposite to the first flow guide surface 31, the second flow guide surface 422 extends from the air inlet 211 to the air inlet 121 in a direction away from the first flow guide surface 31, and the second flow guide surface 422 is arc-shaped or streamline-shaped.

In some embodiments, the base 100 includes a plurality of connecting ribs 50 connecting the baffle element 30 and the sound attenuating structure 40, and the plurality of connecting ribs 50 are spaced around the circumference of the outer wall 12.

Thus, the connecting rib 50 can connect the flow guiding element 30 and the sound attenuating structure 40 into a whole, so that the installation of the flow guiding element 30 and the sound attenuating structure 40 is easier.

As shown by the dotted arrows in fig. 3, when the bladeless fan 200 operates, the motor 23 drives the impeller 22 to rotate, air passes through the air inlet 1211, the flow guide element 30 and the air inlet 211 in sequence and is sucked by the impeller 22, the impeller 22 accelerates and pressurizes the air to form a high-speed air flow, the high-speed air flow passes through the air passage 25a and the diffuser 24 in sequence and enters the air duct of the fan head 102, and finally is ejected from the nozzle 1021, so that the high-speed air flow ejected from the nozzle 1021 can entrain surrounding air to form wind, and thus the effect of cooling and cooling a user is achieved.

In addition, when the bladeless fan 200 is started, the rotation speed of the motor 23 is gradually increased, and when the bladeless fan 200 stops operating, the rotation speed of the motor 23 is gradually reduced, so that the bladeless fan 200 can be slowly started and stopped, vibration of the bladeless fan 200 can be reduced, and noise can be reduced.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A base for a bladeless fan, the base comprising:

the air inlet structure comprises a shell, the shell comprises an outer wall, an air inlet is formed in the outer wall, the shell further comprises a partition plate extending inwards from the outer wall, a plurality of stand columns are fixedly arranged on the partition plate and extend upwards from the partition plate, and damping elements are sleeved on the stand columns;

the power system is arranged in the shell and is provided with an air inlet, the power system is used for sucking air through the air inlet and establishing air flow, the power system is supported on the damping element and comprises an impeller shell and an impeller, the impeller is arranged in the impeller shell, the peripheral surface of the impeller shell is provided with a plurality of supporting pieces, the supporting pieces are circumferentially arranged along the peripheral surface of the impeller shell at intervals, the supporting pieces are provided with connecting holes, the stand columns penetrate through the connecting holes, so that the impeller shell is erected on the partition plate, and the height of the air inlet is higher than that of the air inlet; and

the flow guide element is arranged in the outer wall and comprises a first flow guide surface, and the first flow guide surface is gathered and extended from the air inlet to the air inlet so as to guide the air to flow from the air inlet to the air inlet;

the base comprises a silencing structure arranged in the outer wall, a silencing cavity surrounding the air inlet is formed in the silencing structure, the silencing structure comprises a silencing plate opposite to the first flow guide surface, and a plurality of silencing holes communicated with the silencing cavity are formed in the silencing plate;

the silencing plate comprises a second flow guide surface opposite to the first flow guide surface, the second flow guide surface extends to the air inlet from the air inlet to the direction far away from the first flow guide surface, and the second flow guide surface is arc-shaped or streamline-shaped.

2. The base of claim 1, wherein the first flow guide surface is curved, and the curved surface comprises an arc or a streamline.

3. The pedestal of claim 1, wherein the first flow directing surface extends continuously in a circumferential direction of the outer wall.

4. The pedestal of claim 1, wherein the first baffle surface includes a top portion proximate the intake vent, the top portion being spaced from the intake vent by a distance in a range of 5-30 mm.

5. The base of claim 1, wherein the muffling hole is cylindrical and has a diameter in the range of 1-8 mm.

6. The base of claim 1, wherein a sound absorbing element is disposed within the sound attenuating cavity.

7. The base of claim 1, wherein the base includes a plurality of connecting ribs connecting the flow directing element and the sound attenuating structure, the plurality of connecting ribs being spaced circumferentially around the outer wall.

8. A bladeless fan, characterized in that it comprises a base according to any one of claims 1-7.