WO2018090439A1

WO2018090439A1 - Base and bladeless fan

Info

Publication number: WO2018090439A1
Application number: PCT/CN2016/112097
Authority: WO
Inventors: 李忠华; 程杰锋; 魏喜明; 王跃; 王学超; 李长明
Original assignee: 美的集团股份有限公司
Priority date: 2016-11-15
Filing date: 2016-12-26
Publication date: 2018-05-24
Also published as: CN106321525B; CN106321525A

Abstract

Disclosed are a base and a bladeless fan. The base comprises a housing (10), a power system (21) and a silencer (22). The housing comprises an outer wall (12). The power system (21) is arranged in the outer wall (12). The silencer (22) is arranged in the outer wall (12). Air inlets (121) are formed on the outer wall (12). The power system (21) is used to draw in air via the air inlets (121) for creating airflow. A plurality of first silencing cavities (221), and a plurality of first sound inlets (222) located between the power system (21) and an air intake (214) are formed on the silencer (22). Each of the first sound inlets (222) communicates with and corresponds to one of the first silencing cavities (221). Since the silencer (22) is arranged in the outer wall (12), and a plurality of first silencing cavities (221), and a plurality of first sound inlets (222) communicating with the plurality of first silencing cavities (221) and located between the power system (21) and the air inlets (121) are formed on the silencer (22), so that when the power system operates, the power system draws in air via the air inlets into the outer wall, and the produced noises can be respectively led from the plurality of first sound inlets into the corresponding first silencing cavities, and are reflected and absorbed by the plurality of first silencing cavities to eliminate noise.

Description

Base and leafless fan

Priority information

Priority is claimed on Japanese Patent Application No. 201611025730.2, filed on Jan.

Technical field

The invention relates to the field of living appliances, and in particular to a pedestal and a bladeless fan.

Background technique

Existing leafless fans include a base. The base includes a housing and a power system disposed within the housing. The outer casing is formed with an air inlet, and during operation, the power system draws in air through the air inlet and establishes an air flow. However, the noise generated by the power system is large and will spread outward through the air inlet, resulting in a large noise of the bladeless fan.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention needs to provide a pedestal and a bladeless fan.

The base of the embodiment of the present invention can be used for a bladeless fan, the base includes a housing, a power system and a sound absorbing member, the housing includes an outer wall, the power system is disposed in the outer wall, and the muffler is disposed In the outer wall, the outer wall is formed with an air inlet, the power system is configured to collect air through the air inlet, the sound attenuating member is formed with a plurality of first silencing chambers and is located in the power system And a plurality of first sound inlets between the air inlets, each of the first sound inlets communicating with a corresponding one of the first silencing chambers.

The susceptor of the embodiment of the present invention can be applied to the bladeless fan of the embodiment of the present invention, and the bladeless fan includes the above pedestal.

In the embodiment of the present invention, since the sound absorbing member is disposed in the outer wall, the sound absorbing member is formed with a plurality of first silencing chambers and a plurality of first ones that communicate between the plurality of first silencing chambers and between the power system and the air inlets. a sound inlet, such that when the power system is in operation, the noise generated by the power system sucking air from the air inlet into the outer wall may be respectively introduced into the corresponding first silencing chamber by the plurality of first sound inlets and reflected by the plurality of first silencing chambers And absorbing to eliminate noise, and at the same time, the noise emitted by the power system can be introduced into the corresponding first silencing chamber by the plurality of first sound inlets before being diffused to the air inlet and reflected by the plurality of first silencing chambers. Absorption, so, the noise generated when the power system works The sound has been effectively reduced.

In one embodiment, the outer wall is annular, and the sound absorbing member is annular and disposed coaxially with the outer wall between the air inlet and the power system.

In one embodiment, the intake ports are formed with intake holes arranged in an array, the intake holes being distributed along the circumferential direction of the outer wall.

In one embodiment, the air inlets are arranged in a plurality of arrays along the circumferential direction of the outer wall, and two adjacent arrays are spaced apart.

In one embodiment, the inlet holes are circular, and the inlet holes have a diameter of 1-3 mm.

In one embodiment, the distance between two adjacent inlet holes is 1-3 mm.

In one embodiment, the plurality of first silencing chambers comprise a Helmholtz resonant cavity.

In one embodiment, the plurality of first silencing chambers include an annular first sub-anechoic chamber and a second sub-muff chamber that is annular and surrounds the first sub-anechoic chamber and is separated from the first sub-anechoic chamber The plurality of first sound inlets include a first sub-sound inlet that communicates with the first sub-muff chamber and a second sub-sound inlet that communicates with the second sub-anechoic chamber, the first sub-sound inlet and the The second sub-sound inlet faces the same.

In one embodiment, the first sub-silence chamber includes a Helmholtz resonator, the second sub-silence chamber includes a Helmholtz resonator, the first sub-anechoic chamber and the second sub-silence The volume of the cavity ranges from 3*10 ⁵ -5*10 ⁵ mm ³ .

In one embodiment, the first sub-sound inlet has a length of 2-10 mm, the first sub-sound inlet has a width of 2-6 mm, and the second sub-sound inlet has a length of 2-10 mm. The width of the second sub-sound inlet is 2-6 mm.

In one embodiment, the plurality of first silencing chambers include an annular first sub-anechoic chamber and an annular second sub-anechoic chamber formed in the first sub-anechoic chamber, the plurality of first sound inlets A first sub-sound inlet that connects the first sub-anechoic chamber and a second sub-sound inlet that communicates with the second sub-anechoic chamber, the first sub-sound inlet and the second sub-sound inlet are oriented the same.

In an embodiment, a second muffler cavity is formed between the outer wall and the power system, and the muffler and the power system are formed to communicate with the second muffler cavity and the air inlet. Second sound entrance.

In one embodiment, the housing includes a bottom plate, the outer wall extending upwardly from the bottom plate, and the base further includes a sound reflecting plate disposed on the bottom plate and opposite the second sound inlet.

In one embodiment, the housing includes a bottom plate, the outer wall extends upward from the bottom plate, and the base further includes a sound reflecting plate disposed on the bottom plate and opposite to the plurality of first sound inlets .

In one embodiment, the sound reflecting plate includes an arcuate surface that is opposite to the bottom plate and that is convex upward.

In one embodiment, a bottom surface of the sound reflecting plate extends downwardly to form a fixed end, and a top surface of the bottom plate is formed with a matching hole, and the fixing end cooperates with the matching hole to move the sound reflecting plate Mounted on the top surface of the bottom plate.

In one embodiment, the power system includes an impeller casing, an impeller, and a motor, the impeller casing being erected in the casing, the impeller casing being formed with an air inlet communicating with the air inlet, the impeller setting Within the impeller housing, the motor is used to drive the impeller.

A bladeless fan according to an embodiment of the present invention includes the susceptor according to any of the above embodiments.

In one embodiment, the bladeless fan includes a fan head formed with a duct and a nozzle communicating with the duct, the fan head communicating with the base to generate the power system Airflow is fed into the air duct and ejected outward through the nozzle.

Additional aspects and advantages of the embodiments of the invention will be set forth in part in the description.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic perspective view of a susceptor according to an embodiment of the present invention.

2 is a schematic cross-sectional view of a susceptor according to an embodiment of the present invention.

Figure 3 is an enlarged schematic view of the susceptor II portion of Figure 2.

4 is an exploded perspective view of a susceptor according to an embodiment of the present invention.

Fig. 5 is a perspective view showing a sound absorbing member of a susceptor according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view showing a sound absorbing member of a susceptor according to an embodiment of the present invention.

Fig. 7 is another schematic cross-sectional view of the sound absorbing member of the susceptor according to the embodiment of the present invention.

Fig. 8 is a perspective view showing a sound reflecting plate of a susceptor according to an embodiment of the present invention.

9 is a perspective view of a bottom plate of a susceptor according to an embodiment of the present invention.

Figure 10 is a perspective view of a grid element of a susceptor according to an embodiment of the present invention.

Figure 11 is a perspective view of a bladeless fan in accordance with an embodiment of the present invention.

Fig. 12 is a schematic view showing a sound pressure curve of a bladeless fan according to an embodiment of the present invention.

The main component symbol description:

Leafless fan 100;

Base 20;

The housing 10, the bottom plate 11, the outer wall 12, the matching hole 11a, the air inlet 121, the air inlet 122, the partition 13, the grid element 14, the through hole 131, the second fixing piece 132;

The power system 21, the impeller casing 211, the impeller 212, the motor 213, the air inlet 214, the diffuser 215, the motor casing 216, the fin 215a, the air outlet 215b, the gas passage 216a;

The muffler 22, the first mounting hole 22a, the first silencing chamber 221, the first sound inlet 222, the first sub-anechoic chamber 221a, the first sub-anechoic chamber 221c, the second sub-anechoic chamber 221b, the second sub-anechoic chamber 221d, The first sub-sound inlet 222a, the first sub-sound inlet 222c, the second sub-sound inlet 222b, the second sub-sound inlet 222d, the second silencing chamber 223, the second first sound inlet 224, the sound reflecting plate 225, and the curved surface 225a, fixed end 225b;

Fan head 30, nozzle 31;

Seal 40;

Connecting plate 50, first fixing piece 51;

The tension spring 60 is stretched.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientations of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or More of the features described. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or connected in one piece. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

Referring to FIG. 1 to FIG. 3 together, the base 20 of the embodiment of the present invention can be used for a bladeless fan. The base 20 includes a housing 10, a power system 21, and a sound absorbing member 22.

The housing 10 includes an outer wall 12. The power system 21 is disposed within the outer wall 12. The muffler 22 is disposed within the outer wall 12. The outer wall 12 is formed with an air inlet 121. The power system 21 is used to draw air through the air inlet 121 to establish an air flow. The muffler 22 is formed with a plurality of first silencing chambers 221 and a plurality of first sound inlets 222 between the power system 21 and the air inlet 121, each of the first sound inlets 222 being connected to a corresponding one of the first silencing chambers 221.

The susceptor 20 of the embodiment of the present invention can be applied to the bladeless fan 100 of the embodiment of the present invention, and the bladeless fan 100 includes the susceptor 20 described above.

In the embodiment of the present invention, since the sound absorbing member 22 is disposed in the outer wall 12, the sound absorbing member 22 is formed with a plurality of first silencing chambers 221 and a plurality of first silencing chambers 221 and is located at the power system 21 and the air inlet 121. A plurality of first sound inlets 222 therebetween, such that when the power system 21 is in operation, noise generated by the power system 21 sucking air into the outer wall 12 from the air inlet 121 can be introduced into the corresponding first by the plurality of first sound inlets 222 A sound absorbing chamber 221 is reflected and absorbed by the plurality of first silencing chambers 221 to eliminate noise. At the same time, the noise emitted by the power system 21 during operation can be advanced by the plurality of first sound inlets 222 before being respectively diffused to the air inlet 121. The corresponding first muffler cavity 221 is introduced and reflected and absorbed by the plurality of first muffler cavities 221, so that the noise formed when the power system 21 operates is effectively reduced.

In the example of the present invention, since the muffler 22 has a plurality of first muffler chambers 221, and each of the first muffler chambers 221 is in communication with the corresponding first sound inlet 222, the muffler 22 has a multi-sounding effect. At the same time, the first sound chamber 222 forms a small passage, and the first sound-absorbing chamber 221 communicates with the outside through the first sound inlet 222, and the noise can be reflected and absorbed in the first sound-absorbing chamber 221, that is, the first sound-absorbing chamber 221 can be Eliminate the conversion of sound energy into heat.

In an embodiment of the invention, air is introduced into the outer wall 12 by the air inlet 121 during operation of the power system 21 to generate a high pressure air flow within the power system 21.

In one embodiment, the outer wall 12 is annular, and the sound absorbing member 22 is annular, and is disposed coaxially with the outer wall 12 between the air inlet 121 and the power system 21.

Thus, the annular outer wall 12 makes the leafless fan 100 having the casing 10 more beautiful, and facilitates the entry of air in a more uniform manner, while the air inlet area is large and the air inlet has no dead angle, and the sound absorbing member 22 is the same as the outer wall 12 The shaft arrangement ensures that the noise generated by the power system 21 can be more fully introduced into the first muffler cavity 221 by the first sound inlet 222 and reflected and absorbed by the first muffler cavity 221 while being coaxially disposed in such a manner that the base 20 is The structure is relatively stable, which facilitates the installation and placement of the base 20.

In one embodiment, the intake port 121 is formed with intake holes 122 arranged in an array, and the intake holes 122 are distributed along the circumferential direction of the outer wall 12.

Thus, the intake area of the intake port 121 is large and the intake air is relatively uniform.

In one embodiment, the air inlets 121 are arranged in a plurality of arrays along the circumferential direction of the outer wall 12, and the adjacent two arrays are spaced apart.

In this way, it is ensured that the air inlet 121 has a large air intake area, and the strength of the outer wall 12 can be ensured, thereby ensuring the structural stability of the casing 10, and the arrangement of the plurality of arrays can be reduced to some extent. The noise generated by the interaction between the airflows when the air inlets 121 enter the air and between the airflow and the air intake holes 122.

In one embodiment, the inlet aperture 122 is circular and the inlet aperture 122 has a diameter of 1-3 mm.

Thus, the size of the intake hole 122 is moderate, and it is helpful to reduce the noise generated when the intake port 121 enters the air while ensuring that the intake port 121 has a sufficient intake area.

In one example, the intake aperture 122 has a diameter of 2 mm. As such, the size of the air inlet 122 is moderate, and the opening of the air inlet 122 is less difficult.

In one embodiment, the distance between adjacent two intake apertures 122 is 1-3 mm.

In this way, the distance between the adjacent air inlet holes 122 is moderate, so that the air inlet area of the air inlet port 121 can be ensured, and at the same time, the air flow between the air flow holes and the air flow can be avoided due to the short distance between the air inlet holes 122. The interaction force between the intake holes 122 is excessively large to generate a large noise.

In one example, the distance between the air intake holes 122 is 2 mm. As such, the distance between the intake holes 122 is moderate.

In one embodiment, the plurality of first silencing chambers 221 include a Helmholtz resonant cavity. In this way, the noise can form a resonance in the plurality of first silencing chambers 221, so that the silencing effect of the plurality of first silencing chambers 221 is better.

Referring to FIG. 6, in one embodiment, the plurality of first silencing chambers include an annular first sub-anechoic chamber 221a and a second sub-circle and surrounding the first sub-anechoic chamber 221a and separated from the first sub-anechoic chamber 221a. Silencing chamber 221b. The plurality of first sound inlets include a first sub-sound inlet 222a that communicates with the first sub-anechoic chamber 221a and a second sub-sound inlet 222b that communicates with the second sub-anechoic chamber 221b. The first sub-sound inlet 222a and the second sub-sound inlet 222b are oriented the same.

In this way, the first sub-anechoic cavity 221a and the second sub-silence cavity 221b form a parallel structure, which does not affect each other, and the two sub-muff chambers of the ring have a large coverage area, which facilitates the introduction of sound, and at the same time, the first sub-child Sound entrance 222a The same orientation as the second sub-sound inlet 222b allows noise to be introduced into the corresponding sub-anechoic cavity from the sound inlet in time.

In one embodiment, the first sub-silence chamber 221a includes a Helmholtz resonator, and the second sub-anechoic chamber 221b includes a Helmholtz resonator, a volume range of the first sub-anechoic chamber 221a and the second sub-anechoic chamber 221b. It is 3*10 ⁵ -5*10 ⁵ mm ³ .

Thus, the first sub-anechoic chamber 221a and the second sub-anechoic chamber 221b have a moderate volume and a good effect of eliminating noise in a certain frequency range, for example, at a frequency of about 600-5000 Hz.

Referring to FIG. 6, in one embodiment, the length h1 of the first sub-sound inlet 222a is 2-10 mm, and the width d1 of the first sub-sound inlet 222a is 2-6 mm.

In this way, the size of the first sound inlet 222a is moderate, and the first sound inlet 222a forms a small hole, which can ensure the sealing effect of the muffler cavity, thereby ensuring the muffling effect of the muffler cavity.

In one embodiment, the second sub-sound inlet 222b has a length h2 of 2-10 mm and the second sub-sound inlet 222b has a width d2 of 2-6 mm.

In this way, the size of the second sub-sound inlet 222b is moderate, and the hole formed by the second sub-sound inlet 222b is small, which can ensure the sealing effect of the muffler cavity, thereby ensuring the muffling effect of the muffler cavity.

In one example, the volume of the first sub-anechoic chamber 221a is 4*10 ⁵ mm ³ , the length h1 of the first sub-sound inlet 222a is 6 mm, and the width d1 of the first sub-sound inlet 222a is 4 mm; the second sub-muff chamber The volume of 221b is 4*10 ⁵ mm ³ , the length h2 of the second sub-sound inlet 222b is 6 mm, and the width d2 of the second sub-sound inlet 222b is 4 mm.

Referring to FIG. 7, in one embodiment, the plurality of first silencing chambers include an annular first sub-anechoic chamber 221c and an annular second sub-anechoic chamber 221d formed in the first sub-anechoic chamber 221c. The plurality of first sound inlets include a first sub-sound inlet 222c that communicates with the first sub-anechoic chamber 221c and a second sub-sound inlet 222d that communicates with the second sub-anechoic chamber 221d. The first sub-sound inlet 222c and the second sub-sound inlet 222d are oriented the same.

In this way, the first sub-anechoic cavity 221c and the second sub-anechoic cavity 221d form a series structure, and the connection between them can enhance the silencing effect of the chamber, and the coverage area of the two sub-muff chambers of the ring is large, which is favorable for the introduction of sound. At the same time, the first sub-sound inlet 222c and the second sub-sound inlet 222d are oriented in the same direction so that noise can be introduced into the corresponding sub-mute chamber from the sound inlet in time.

In one embodiment, the first sub-silence chamber 221c includes a Helmholtz resonator, and the second sub-anechoic chamber 221d includes a Helmholtz resonator, a first sub-anechoic chamber 221c and a second sub-anechoic chamber 221d. It is 3*10 ⁵ -5*10 ⁵ mm ³ .

Thus, the volume of the first sub-anechoic chamber 221c and the second sub-anechoic chamber 221d is moderate, and the effect of eliminating noise in a certain frequency range is good, for example, at a frequency of about 600-5000 Hz.

In one embodiment, the length of the first sub-sound inlet 222c is 2-10 mm, the first sub-sound inlet The width d3 of 222c is 2-6 mm.

Thus, the size of the first sound inlet 222c is moderate, and the hole formed by the first sound inlet 222c is small, which can ensure the sealing effect of the muffler cavity, thereby ensuring the muffling effect of the muffler cavity.

In one embodiment, the second sub-sound inlet 222d has a length h4 of 2-10 mm and the second sub-sound inlet 222d has a width d4 of 2-6 mm.

In this way, the width of the second sub-sound inlet 222d is moderate, and the hole formed by the second sub-sound inlet 222d is small, which can ensure the sealing effect of the muffler cavity, thereby ensuring the muffling effect of the muffler cavity.

In one example, the volume of the first sub-anechoic chamber 221c is 4*10 ⁵ mm ³ , the length h3 of the first sub-sound inlet 222c is 6 mm, and the width d3 of the first sub-sound inlet 222c is 4 mm; the second sub-muff chamber The volume of 221d is 4*10 ⁵ mm ³ , the length h4 of the second sub-sound inlet 222d is 6 mm, and the width d4 of the second sub-sound inlet 222d is 4 mm.

In one embodiment, a second silencing chamber 223 is formed between the outer wall 12 and the power system 21. A second sound inlet 224 that connects the second silencing chamber 223 and the air inlet 121 is formed between the muffler 22 and the power system 21.

As such, the second silencing chamber 223 and the plurality of first silencing chambers 221 can form a multi-stage silencing chamber, so that when the power system 21 is in operation, noise can also be introduced into the second silencing chamber 223 by the second sound inlet 224 and silenced by the second silence. The cavity 223 reflects and absorbs, further reducing the noise of the power system 21 during operation.

In one example, the outer casing of the power system 21 is provided with an air inlet 214, and the power system 21 introduces air into the power system 21 through the air inlet 214 to generate airflow, and the second silencing chamber 223 and the second sound inlet 224 are annular. The second muffler chamber 223 is coaxial with the second sound inlet 224, and the second sound inlet 224 is adjacent to the air inlet 214 with respect to the second muffler chamber 223. In this way, the second sound inlet 224 is disposed near the air inlet 214, which facilitates the introduction of noise, and the annular sound inlet has a large coverage area, which facilitates the full introduction of noise, and the annular sound inlet is similar to the muffler cavity structure, and the noise is similar. It can be completely removed into the muffler cavity through the sound inlet, and the volume of the muffler cavity can be fully utilized.

In the example of the present invention, the second silencing chamber 223 is located at an upper portion of the first silencing chamber 221 and spaced apart from the first silencing chamber 221, and the second sound inlet 224 is a gap formed between the muffler 22 and the power system 21. The muffler 22 includes an annular first sub-anechoic chamber 221c and an annular second sub-anechoic chamber 221d formed in the first sub-anechoic chamber 221c. The muffler 22 further includes a first sub-sound inlet 222c that communicates with the first sub-anechoic chamber 221c and a second sub-sound inlet 222d that communicates with the second sub-anechoic chamber 221d. The first sub-sound inlet 222c and the second sub-sound inlet 222d are oriented the same. The second silencing chamber 223, the first sub-anechoic chamber 221c and the second sub-anechoic chamber 221d constitute a three-stage muffler chamber.

In one example, the first sub-silence chamber 221c is a Helmholtz resonator, the second sub-anechoic chamber 221d is a Helmholtz resonator, and the second silencing chamber 223 is a Helmholtz resonator (not shown) ). The first sub-anechoic chamber 221c, the second sub-anechoic chamber 221d and the second silencing chamber 223 form a three-stage Helmholtz resonant cavity. So, the noise can be eliminated in each Resonance is formed in the sound cavity, so that the muffling effect of each muffler cavity is better.

In one embodiment, the housing 10 includes a bottom plate 11. The outer wall 12 extends upward from the bottom plate 11. The base 20 further includes a sound reflecting plate 225 disposed on the bottom plate 11 and opposed to the second sound inlet 224.

As such, the noise generated by the power system 21 during operation can be reflected by the sound reflecting plate 225 into the second silencing chamber 223, thereby being eliminated by the second silencing chamber 223, thus enhancing the silencing effect of the second silencing chamber 223.

In other embodiments, the housing includes a bottom plate. The outer wall extends upward from the bottom plate. The base further includes a sound reflecting plate disposed on the bottom plate and opposed to the plurality of first sound inlets. In this way, the noise generated during the operation of the power system can be reflected by the sound reflection plate into the first muffler cavity, thereby being eliminated by the first muffler cavity, thus enhancing the muffling effect of the first muffler cavity.

In one example, the sound reflecting plate 225 is constructed of a relatively stiff material, such as a polycarbonate material. Thus, the sound reflecting plate 225 has a large density and a high modulus of elasticity, and the sound reflecting effect is better.

In the embodiment of the present invention, the outer casing of the power system 21 is provided with an air inlet 214, and the power system 21 introduces air into the power system 21 through the air inlet 214 to generate airflow, and the two first sound inlets 222 and the second sound inlets 224 are both Located adjacent to the air inlet 214, the sound reflecting plate 225 is opposed to the two first sound inlets 222 and the second sound inlets 224. In this way, the noise is sufficiently introduced into the corresponding muffler cavity, and at the same time, the sound reflecting plate 225 can reflect the noise generated when the power system 21 operates to the two muffler cavities to enhance the muffling effect of the muffler cavity.

In one embodiment, the sound reflecting plate 225 includes a curved surface 225a that is opposite to the bottom plate 11 and that is convex upward.

Thus, the reflection area of the sound reflection plate 225 is large, so that more sound can be reflected into the corresponding muffler cavity, and the reflection effect is better.

Referring to FIG. 8 and FIG. 9 , in one embodiment, the bottom surface of the sound reflecting plate 225 extends downwardly to form a fixed end 225 b . The top surface of the bottom plate 11 is formed with a matching hole 11 a. The fixed end 225 b is engaged with the matching hole 11 a. The sound reflecting plate 225 is mounted on the top surface of the bottom plate 11. As described above, the position of the sound reflection plate 225 is relatively constant, and it is not easily affected by the external force, and the positional shift occurs to affect the use effect of the sound reflection plate 225.

In one example, the number of the fixed ends 225b is four, the four fixed ends form four corners of the quadrilateral, and the bottom surface of the bottom plate 11 is formed with four matching holes 11a, and each fixed end 225b cooperates with the corresponding matching hole 11a. The sound reflecting plate 225 is mounted on the bottom surface of the bottom plate 11. As such, the position of the sound reflecting plate 225 is more stable.

In an embodiment of the invention, the housing 10 further includes a partition 13 extending inwardly from the outer wall 12. The partition plate 13 is formed with a through hole 131 which is disposed coaxially with the outer wall 12. The muffler 22 is mounted on the underside of the partition 13 and spaced apart from the power system 21. Thus, the position of the muffler 22 is relatively stable. The gap between the muffler 22 and the outer casing of the power system 21 forms a second sound inlet 224.

Referring to FIG. 5, in one example, the base 20 includes a fastener (not shown), the housing of the sound absorbing member 22 is provided with a first mounting hole 22a, and the partition plate 13 is provided with a second mounting hole ( Figure not shown), the fastener is worn second The hole and the first mounting hole 22a are mounted to mount the noise damper 22 on the lower surface of the partition plate 13. Thus, the position of the muffler 22 is relatively stable.

It should be noted that the "lower surface" refers to the positional state of the susceptor 20 under normal use conditions, for example, as shown in FIG.

In one embodiment, the power system 21 includes an impeller casing 211, an impeller 212, and a motor 213. The impeller housing 211 is mounted within the housing 10. The impeller casing 211 is formed with an air inlet 214 that communicates with the intake port 121. The impeller 212 is disposed within the impeller housing 211. Motor 213 is used to drive impeller 212.

As such, the impeller casing 211 has the function of supporting and protecting the power system 21, and while the motor 213 drives the impeller 212 to operate, the air entering the susceptor 20 can directly enter the power system 21 from the air inlet 214 to generate a high-pressure airflow.

Specifically, in the embodiment of the present invention, the impeller 212 is disposed within the impeller casing 211. The motor 213 is used to drive the impeller 212 to rotate. The motor 213 is located in the impeller casing 21, and the output shaft of the motor 213 is fixedly coupled to the impeller 212 so that the motor 213 can drive the impeller 212 to rotate.

When the impeller 212 rotates, a negative pressure can be generated around the impeller 212, so that air can be taken in from the air inlet 214, and after the air is pressurized by the impeller 212, a high-pressure airflow can be formed. The high pressure gas stream can be discharged from the air outlet 215b of the power system 21.

In one embodiment, the power system 21 also includes a diffuser 215. The diffuser 215 is disposed downstream of the airflow generated by the impeller 212. The diffuser 215 is coupled to the impeller housing 211.

In this manner, the diffuser 215 can pressurize, decelerate, and decelerate the high-pressure airflow generated by the impeller 212 to guide the high-pressure airflow to move toward the air outlet 215b.

It can be understood that the diffuser 215 includes a plurality of fins 215a that can integrate the high-pressure airflow generated by the impeller 212, and can achieve the effect of eliminating the cyclone so as to be discharged from the air outlet 215b of the diffuser 215. The airflow is softer.

In one embodiment, a motor housing 216 for securing the motor 213 is formed outside the motor 213. The motor housing 216 is formed outside the motor 213 and is used to secure the motor 213. The motor housing 216 and the motor 213 are both disposed between the diffuser 215 and the impeller 212, and the motor housing 216 is coupled to the impeller housing 211.

As such, the motor housing 216 can prevent the motor 213 from shaking during operation.

Specifically, a gas passage 216a is formed between the motor housing 216 and the impeller housing 211, and the gas passage 216a is in communication with the diffuser 215. The airflow generated by the rotation of the impeller 212 passes through the gas passage 216a and flows to the diffuser 215, passes through the diffuser 215, and flows out of the diffuser 215 to enter a rated component, such as a fan head.

Referring to Figure 10, in an embodiment of the invention, base 20 includes a grid member 14 disposed coaxially with outer wall 12. The grille element 14 is disposed within the housing 10 and covers the air inlet 121. As such, the grid element 14 can block the base The sound generated in 20 is directly transmitted to the outside of the susceptor 20 through the air inlet 121, so that the sound is consumed in the process of reflection inside the susceptor 20, thereby reducing the sound transmitted to the outside of the casing 10, thereby reducing the noise. And the air can enter the housing 10 normally to ensure that the bladeless fan with the base 20 works normally.

In addition, the power system 21 extends into the grid member 30 such that the air inlet 214 of the power system is located at the grid member 14, such that the grid member 14 can better block the sound generated by the air inlet 214 from passing outside the base 20.

The distance between the grid member 14 and the outer wall 12 is 5-30 mm. The grid member 14 and the outer wall 12 are within the above range of distances such that noise can be reflected back and forth between the outer wall 12 and the grid member 14 for consumption, thereby reducing noise transmitted outside the bladeless fan having the base 20.

Referring to Fig. 11, a bladeless fan 100 according to an embodiment of the present invention includes the susceptor 20 according to any of the above embodiments.

In the bladeless fan 100 of the embodiment of the present invention, the plurality of first silencing chambers 221 include a Helmholtz resonator, as shown in FIG. 12, and the curve a is a sound pressure level curve when the vaneless fan 100 omits the silencing member 22. The curve b is a sound pressure level curve when the vaneless fan 100 is provided with the muffler 22. Here, the ordinate SPL indicates the sound pressure level of the noise of the bladeless fan 100, and the abscissa f indicates the frequency of the noise of the bladeless fan 100. As can be seen from FIG. 12, when the muffler 22 is provided in the casing 10, the sound pressure level and frequency of the noise of the vaneless fan 100 are both lowered.

In one embodiment, the bladeless fan 100 includes a fan head 30. The fan head 30 is formed with a duct (not shown) and a nozzle 31 that communicates with the duct. The fan head 30 is in communication with the base 20 to deliver airflow generated by the power system into the air duct and to be ejected outward through the nozzle 31. Further, foam is disposed in the air passage of the fan head 30. Thereby, the foam can absorb the noise generated in the air passage, so that the noise of the bladeless fan 100 can be reduced.

The upwardly extending portion of the fan head 30 is curved so that the air passage is curved, thereby reducing the noise generated when the air flows.

In order to prevent airflow from leaking from the joint between the base 20 and the fan head 30, a seal 40 is provided between the base 20 and the fan head 30, and the seal 40 is, for example, a rubber sheet. The seal 40 is used to seal the gap between the base 20 and the fan head 30.

In one example, the seal 40 has a hardness of between 40 and 60 Shore A and is elastically stretchable.

Referring to FIG. 4, in one embodiment, the bladeless fan 100 includes a web 50. The connecting plate 50 is disposed between the base 20 and the fan head 20 for connecting the base 20 and the fan head 30.

A first fixing piece 51 is fixedly disposed on the connecting plate 50, and a second fixing piece 132 is fixedly disposed on the partition plate 13. The second fixing piece 132 and the first fixing piece 51 are both located in the casing 10. The plurality of tension springs 60 are stretched and connected to the first fixing piece 132 and the power system 21, and the second fixing piece 132 and the power system 21 are stretched and connected.

The tension spring 60 allows the power system 21 to be suspended, and the vibration generated by the power system 21 is not directly transmitted to the casing 10, so that the noise generated by the susceptor 20 can be reduced.

The plurality of tension springs 60 includes two groups, and the first group of tension springs 60 includes three, and the first group of three tension springs The first fixing piece 51 and the power system 21 are connected to each of 60. Preferably, the three sets of three tension springs 60 are evenly arranged along the circumferential direction of the power system 21, that is, the angle between the two of the first set of tension springs 60 is 120. degree.

The second set of three tension springs 60 are connected to the second fixing piece 132 and the power system 21. Preferably, the two sets of three tension springs 60 are evenly arranged along the circumferential direction of the power system 21, that is, the angle between the two tension springs 60 of the second set of tension springs 60 is 120. degree.

In one example, the tensile spring 60 has a stiffness factor of 2-4 N/mm and the original length ranges from 15-25 mm. For example, the tensile spring 60 has a stiffness coefficient of 3 N/mm and an original length of 20 mm.

As shown by the dashed arrow in FIG. 2, when the bladeless fan 100 is in operation, the motor 213 drives the impeller 212 to rotate, and the air is sequentially sucked by the impeller 212 through the air inlet 121 and the air inlet 214, and the impeller 212 accelerates and pressurizes the air to form a high pressure. The air flow and the high-pressure air flow sequentially pass through the gas passage 216a and the diffuser 215, enter the air passage of the fan head 30, and finally are ejected from the nozzle 31, so that the high-pressure airflow ejected from the nozzle 31 can entrain the surrounding air to form a wind, thereby forming a wind. Realize the effect of cooling down the user.

In addition, when the bladeless fan 100 is started, the rotational speed of the motor 213 gradually increases, and when the bladeless fan 100 stops operating, the rotational speed of the motor 213 gradually decreases, thereby enabling the bladeless fan 100 to be slowly started and stopped, thereby reducing The vibration of the leafless fan 100 is to reduce the generation of noise.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. In addition, the present invention may be repeated with reference to the numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features described, The structures, materials or features may be combined in any suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A base for a bladeless fan, characterized in that the base comprises:

a housing, the housing including an outer wall, the outer wall being formed with an air inlet:

a power system disposed within the outer wall for drawing air through the air inlet to establish airflow; and

a sound absorbing member disposed in the outer wall, the sound absorbing member being formed with a plurality of first silencing chambers and a plurality of first sound inlets between the power system and the air inlet, each of the first sounds The inlet communicates with one of the first silencing chambers.
The susceptor according to claim 1, wherein said outer wall is annular, said sound absorbing member is annular, and is disposed coaxially with said outer wall between said air inlet and said power system.
The susceptor according to claim 1, wherein said intake port is formed with intake holes arranged in an array, said intake holes being distributed along a circumferential direction of said outer wall.
The susceptor according to claim 1, wherein said air inlets are arranged in a plurality of arrays along a circumferential direction of said outer wall, and adjacent two arrays are spaced apart.
The susceptor according to claim 3, wherein said intake hole has a circular shape, and said intake hole has a diameter of 1-3 mm.
The susceptor according to claim 3, wherein a distance between adjacent two of said intake holes is 1-3 mm.
The susceptor of claim 1 wherein said plurality of first silencing chambers comprise Helmholtz resonators.
The susceptor of claim 1 wherein said plurality of first silencing chambers comprise an annular first sub-anechoic chamber and annular and surrounding said first sub-anechoic chamber and said first sub-mute a second sub-anechoic chamber separated by a cavity, the plurality of first sound inlets including a first sub-sound inlet communicating with the first sub-anechoic chamber and a second sub-sound inlet communicating with the second sub-anechoic chamber, The first sub-sound inlet and the second sub-sound inlet are oriented the same.
The susceptor according to claim 8, wherein said first sub-silence chamber comprises a Helmholtz resonator, said second sub-anechoic chamber comprises a Helmholtz resonator, said first sub-silence The volume of the cavity and the second sub-muff chamber is in the range of 3*10 5 -5*10 5 mm 3 .
The susceptor according to claim 8, wherein said first sub-sound inlet has a length of 2-10 mm, said first sub-sound inlet has a width of 2-6 mm, said second sub-sound inlet The length is 2-10 mm, and the width of the second sub-sound inlet is 2-6 mm.
The susceptor according to claim 1, wherein said plurality of first silencing chambers comprise an annular first sub-anechoic chamber and an annular second sub-anechoic chamber formed in said first sub-anechoic chamber, The plurality of first sound inlets include a first sub-sound inlet that communicates with the first sub-muff chamber and a second sub-sound inlet that communicates with the second sub-anechoic chamber, the first sub-sound inlet and the first The two sub-sound entrances are oriented the same.
The susceptor according to claim 11, wherein said first sub-silence chamber comprises a Helmholtz resonator, said second sub-silence chamber comprises a Helmholtz resonator, said first sub-silence The volume of the cavity and the second sub-muff chamber is in the range of 3*10 5 -5*10 5 mm 3 .
The susceptor according to claim 12, wherein said first sub-sound inlet has a length of 2-10 mm, said first sub-sound inlet has a width of 2-6 mm, said second sub-sound inlet The length is 2-10 mm, and the width of the second sub-sound inlet is 2-6 mm.
The susceptor according to claim 1, wherein a second silencing chamber is formed between the outer wall and the power system, and the second muffling is formed between the muffler and the power system. a cavity and a second sound inlet of the air inlet.
The susceptor of claim 14 wherein said housing includes a bottom plate, said outer wall extending upwardly from said bottom plate, said base further comprising a second sound disposed on said bottom plate A sound reflector opposite the entrance.
The susceptor of claim 1 wherein said housing includes a bottom plate, said outer wall extending upwardly from said bottom plate, said base further comprising said base plate disposed on said bottom plate and said plurality of A sound reflector opposite the sound entrance.
The susceptor according to claim 15 or 16, wherein the sound reflecting plate comprises an arcuate surface that is opposite to the bottom plate and that is convex upward.
The susceptor according to claim 15 or 16, wherein a bottom surface of the sound reflecting plate extends downwardly to form a fixed end, and a top surface of the bottom plate is formed with a matching hole, the fixed end and the fixed end The sound reflecting plate is mounted on the top surface of the bottom plate in cooperation with the hole.
The susceptor according to claim 1, wherein said power system comprises an impeller casing, an impeller and an electric motor, said impeller casing being mounted in said casing, said impeller casing being formed to communicate with said intake port The air inlet is disposed in the impeller casing, and the motor is used to drive the impeller.
A leafless fan, comprising the susceptor of any of claims 1-19.
A bladeless fan according to claim 20, wherein said bladeless fan comprises a fan head, said fan head being formed with a duct and a nozzle communicating with said duct, said fan head and said base Communicating to deliver the gas stream produced by the power system into the air duct and to be ejected outward through the nozzle.