CN114576661B - Smoke machine - Google Patents
Smoke machine Download PDFInfo
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- CN114576661B CN114576661B CN202011379994.4A CN202011379994A CN114576661B CN 114576661 B CN114576661 B CN 114576661B CN 202011379994 A CN202011379994 A CN 202011379994A CN 114576661 B CN114576661 B CN 114576661B
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- cavity
- smoke machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a smoke machine, which comprises a smoke machine main body and a sound generating device, wherein the smoke machine main body can form suction airflow, the sound generating device is arranged on a flow path of the suction airflow so as to generate compensation noise under the excitation action of the suction airflow, the compensation noise is overlapped with the machine body noise of the smoke machine main body, the amplitude of a noise spectrum of the smoke machine in a preset frequency band can be improved, the characteristic loudness ratio and the characteristic loudness change rate of the smoke machine spectrum can be improved, the sound quality of the whole noise of the smoke machine can be improved, and the smoke machine is easier to accept by a user, so that the effect of improving the operation environment of the smoke machine is achieved.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to a smoke machine.
Background
The performance of the smoke machine as a kitchen electrical appliance with higher kitchen use frequency directly influences the operation environment of a user, particularly noise problems and the like. The noise of the smoke machine mainly comprises steady-state working noise and operation interaction sound effects (such as on-off sound effects and lifting gear sound effects), wherein the steady-state working noise is a main source of the noise of the smoke machine.
The inventor of the application finds in long-term research and development that, currently, aiming at the noise problem of the smoke machine, the overall level of sound power for reducing noise is generally taken as a noise reduction target, for example, passive noise reduction is realized by reducing vibration, arranging a noise elimination structure and the like, or active noise reduction is realized by sounding through a loudspeaker. However, the above method cannot improve other indexes of sound quality such as specific loudness ratio and specific loudness change rate.
Disclosure of Invention
The invention provides a smoke machine, which aims to solve the technical problem of poor sound quality of smoke machine noise in the prior art.
In order to solve the technical problems, the invention provides a smoke machine, comprising:
a smoking machine body capable of forming a suction airflow;
the sounding device is arranged on the flow path of the suction airflow so as to generate compensation noise under the excitation action of the suction airflow.
In a specific embodiment, the sound generating device is provided with a resonant cavity, and the suction airflow flows through the resonant cavity to excite air in the resonant cavity to cause resonance, so as to generate the compensation noise.
In a specific embodiment, the sound generating device includes a main body portion and an extension portion connected to the main body portion, the main body portion is provided with a main cavity, the extension portion is provided with an auxiliary cavity communicated with the main cavity, the main cavity and the auxiliary cavity jointly form the resonant cavity, and the suction airflow can flow through the auxiliary cavity.
In a specific embodiment, the volume ratio of the auxiliary cavity to the main cavity is 0.5% -5.0%.
In a specific embodiment, the main cavity is rectangular, the auxiliary cavity is cylindrical, and the axial direction of the auxiliary cavity is perpendicular to one of the length direction, the width direction and the thickness direction of the main cavity.
In a specific embodiment, the main cavity has a first end and a second end that are disposed at intervals along the length direction, the auxiliary cavity is disposed near the first end of the main cavity, and a ratio of a radius of the auxiliary cavity to a shortest distance from a peripheral sidewall of the auxiliary cavity to the second end of the main cavity is 3% -10%.
In a specific embodiment, the radius of the auxiliary cavity is 2mm to 10mm.
In a specific embodiment, the number of the sound generating devices is at least two, and the center resonance frequencies of at least two sound generating devices are different from each other.
In a specific embodiment, the number of the sounding devices is at least two, the smoke machine further comprises a connecting ring, the connecting ring is fixed on the smoke machine main body and surrounds to form a diversion space, at least two sounding devices are arranged on the connecting ring at intervals along the circumferential direction of the connecting ring, the auxiliary cavities of the sounding devices are communicated with the diversion space through openings formed on the outer end face of the extension part, the openings point to the diversion space, and the suction airflow flows through the diversion space and the openings along the axial direction of the connecting ring.
In a specific embodiment, an included angle between a plane where the outer end surface of the extension portion is located and the axis of the connection ring is 10 ° to 30 °.
In a specific embodiment, the range hood further comprises a check valve, and the connecting ring is connected to an air outlet end of the check valve.
The invention discloses a smoke machine, which comprises a smoke machine main body and a sound generating device, wherein the smoke machine main body can form suction airflow, the sound generating device is arranged on a flow path of the suction airflow so as to generate compensation noise under the excitation action of the suction airflow, the compensation noise is overlapped with the noise of a machine body of the smoke machine main body, so that the amplitude of a noise spectrum of the smoke machine in a preset frequency band is improved, the specific loudness ratio and the specific loudness change rate of the spectrum of the smoke machine can be improved, the sound quality of the whole noise of the smoke machine is improved, and the smoke machine is easier to accept by a user, thereby the effect of improving the operation environment of the smoke machine is achieved.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic perspective view of an embodiment of a range hood according to the present invention;
FIG. 2 is a schematic perspective view of a connecting ring and sound emitting device in an embodiment of the smoke machine of the present invention;
FIG. 3 is a schematic cross-sectional front view of a connecting ring and sound emitting device of an embodiment of a range hood according to the present invention;
FIG. 4 is a schematic perspective view of a sound generating device in an embodiment of the present invention;
FIG. 5 is a schematic perspective cross-sectional view of a sound emitting device in an embodiment of the present invention;
FIG. 6 is a schematic rear cross-sectional view of a sound emitting device in an embodiment of a range hood according to the present invention;
FIG. 7 is a schematic side cross-sectional view of a sound emitting device in an embodiment of a range hood according to the present invention;
fig. 8 is a schematic top cross-sectional view of a sound emitting device in an embodiment of a range hood according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
The terms "first," "second," and the like in this application 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. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus. And the term "and/or" is merely an association relation describing the association object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Referring to fig. 1 to 3, an embodiment of a smoke machine 10 according to the present invention includes a smoke machine body 100 and a sound generating device 200, wherein a suction airflow can be formed in the smoke machine body 100, the sound generating device 200 is disposed on a flow path of the suction airflow to generate compensation noise under the excitation action of the suction airflow, the compensation noise is superimposed with body noise of the smoke machine body 100, so that the amplitude of a noise spectrum of the smoke machine 10 in a preset frequency band can be increased, and further, the characteristic loudness ratio and the characteristic loudness change rate of the spectrum of the smoke machine 10 can be improved, so that the sound quality of the overall noise of the smoke machine 10 can be improved, and the smoke machine is more easily accepted by a user, thereby achieving an effect of improving the operation environment of the smoke machine.
Referring to fig. 4 and 5 together, in the present embodiment, the sound generating device 200 is provided with a resonant cavity 210, and the suction air flows through the resonant cavity 210 to excite the air in the resonant cavity 210 to cause resonance, so as to generate compensating noise, thereby improving the sound quality of the overall noise of the smoke machine 10.
In this embodiment, the sound generating device 200 includes a main body 220 and an extension 230 connected to the main body 220, the main body 220 is provided with a main cavity 221, the extension 230 is provided with an auxiliary cavity 231 communicating with the main cavity 221, the main cavity 221 and the auxiliary cavity 231 together form a resonant cavity 210, and the suction airflow can flow through the auxiliary cavity 231 to generate resonance in the resonant cavity 210.
In this embodiment, the smoke machine 10 may further include a connection ring 300 and a fan (not shown in the drawings), the fan is disposed in the smoke machine body 100, the connection ring 300 is fixed on the air outlet pipe 400 of the smoke machine body 100 and encloses a diversion space 310, the sound generating device 200 is fixed on the connection ring 300, the extension portion 230 of the sound generating device 200 is disposed through the connection ring 300, and the main body portion 220 of the sound generating device 200 is disposed outside the connection ring 300, so that the auxiliary cavity 231 of the sound generating device 200 is communicated with the diversion space 310 through an opening 232 formed on the outer end surface of the extension portion 230, the opening 232 points to the diversion space 310, and the suction airflow generated by the fan flows through the diversion space 310 and the opening 232 along the axial direction of the connection ring 300.
In this embodiment, the fan may be an axial flow fan, a centrifugal fan, or the like.
In this embodiment, the smoke machine 10 may further include a reinforcement member 320, where the reinforcement member 320 is connected between the outer side of the connection ring 300 and the main body 220 of the sound generating device 200, for reinforcing the sound generating device 200, so that the overall structure of the sound generating device 200 and the connection ring 300 is more stable, and the reliability thereof is improved.
In this embodiment, the inner side of the connection ring 300 may further be provided with a step portion 330 for being engaged with the air outlet pipe 400, so that the continuity between the annular surface of the air channel formed by the air outlet pipe 400 and the annular surface of the air guiding space 310 is better, and the suction air flow is ensured to flow out through the air guiding space 310 along the axial direction of the connection ring 300.
Referring to fig. 6 to 8 together, in the present embodiment, the included angle θ between the plane on which the outer end surface of the extension portion 230 is located and the axis of the connection ring 300 is 10 ° to 30 °, for example, 10 °, 22 ° or 30 °, so that the suction airflow can flow through the auxiliary cavity 231 at a preset angle, the superposition effect of the frequency or amplitude of the compensating noise and the body noise of the smoke machine main body 100 is better, and the sound quality of the overall noise of the finally formed smoke machine 10 is better.
In this embodiment, the volume ratio of the auxiliary cavity 231 to the main cavity 221 is 0.5% -5.0%, for example, 0.5%, 3.2% or 5.0%, so that the matching effect of the flow rate of the suction air flow flowing through the auxiliary cavity 231 and the volume of the main cavity 221 is better, the superposition effect of the frequency or amplitude of the compensating noise generated by resonance and the body noise of the main body 100 of the smoke machine is better, and the sound quality of the overall noise of the finally formed smoke machine 10 is better.
In this embodiment, the main cavity 221 is rectangular, the auxiliary cavity 231 is cylindrical, and the axial direction of the auxiliary cavity 231 is perpendicular to one of the length direction and the width direction of the main cavity 221, and the thickness direction, respectively. The vertical direction in fig. 6 is defined as the longitudinal direction of the main cavity 221, the horizontal direction in fig. 6 is defined as the width direction of the main cavity 221, and the front-rear direction in fig. 6 is defined as the thickness direction of the main cavity 221.
In other embodiments, the main cavity 221 and the auxiliary cavity 231 may be provided in other mating shapes, for example, the auxiliary cavity 231 may be provided in a truncated cone shape; or the main cavity 221 is in a cylindrical shape, and the auxiliary cavity 231 is in a cuboid shape; or the main cavity 221 and the auxiliary cavity 231 are both provided in a rectangular parallelepiped, which is not limited herein.
In this embodiment, the size of the main cavity 221 may be determined according to the size of the auxiliary cavity 231, and then the position of the extension 230 on the main body 220 may be adjusted according to the target frequency of the compensating noise, so as to determine the structural size of the sound generating device 200. Wherein, the dimensions of the auxiliary cavity 231 may include a radius R of the auxiliary cavity 231 and a thickness H of the auxiliary cavity 231, the dimensions of the main cavity 221 may include a length L1, a width L2, and a thickness L3 of the main cavity 221, and the position of the extension 230 on the main body 220 may be determined according to a shortest distance D from a circumferential sidewall of the auxiliary cavity 231 to the second end of the main cavity 221.
In this embodiment, the radius R of the auxiliary cavity 231 may be 2mm to 10mm, for example, 2mm, 6mm or 10mm, so that the pressure pulse generated when the suction airflow flows through the auxiliary cavity 231 can smoothly act on the air in the resonant cavity 210, and further the resonant effect is better.
In this embodiment, the main cavity 221 has a first end and a second end that are disposed at intervals along the length direction, the auxiliary cavity 231 is disposed near the first end of the main cavity 221, the ratio of the radius R of the auxiliary cavity 231 to the shortest distance D from the peripheral side wall of the auxiliary cavity 231 to the second end of the main cavity 221 is 3% -10%, for example, 3%, 6% or 10%, etc., so that a better resonance effect can be achieved when the suction airflow flows through the auxiliary cavity 231, and further the superposition effect of the frequency or amplitude of the compensation noise and the body noise of the smoke machine main body 100 is better, and the sound quality of the overall noise of the finally formed smoke machine 10 is better.
In this embodiment, the radius R of the auxiliary cavity 231 and the volume of the main cavity 221 may be in a forward relationship, and the thickness H of the auxiliary cavity 231 and the volume of the main cavity 221 may be in a reverse relationship, so that the flow rate of the suction airflow and the volume of the main cavity 221 can achieve a better matching relationship.
In this embodiment, the shortest distance D from the peripheral side wall of the auxiliary cavity 231 to the second end of the main cavity 221 may be in an inverse relationship with the target frequency of the compensating noise, so that a better resonance effect can be achieved when the suction airflow flows through the auxiliary cavity 231, and further, the superposition effect of the frequency or amplitude of the compensating noise and the body noise of the smoke machine main body 100 is better, and the sound quality of the overall noise of the finally formed smoke machine 10 is better.
In the present embodiment, the number of the sound generating devices 200 is at least two, and at least two sound generating devices 200 are fixed on the connection ring 300 at intervals along the circumferential direction of the connection ring 300. For example, the extractor 10 may further include a check valve (not shown) with the connecting ring 300 connected to the air outlet end of the check valve to enable the suction airflow to flow to the sound emitting device 200 at a greater airflow rate, a faster flow rate, and a more stable airflow direction. With the two sides of the check valve as the starting point and the end point respectively, the at least two sound generating devices 200 are fixed on the connecting ring 300 at equal intervals along the circumferential direction of the connecting ring 300 from the starting point to the end point, so that the at least two sound generating devices 200 can be matched to achieve a better resonance effect, the superposition effect of the frequency or amplitude of the compensating noise and the body noise of the smoke machine main body 100 is better, and the sound quality of the integral noise of the finally formed smoke machine 10 is better.
In other embodiments, the sound generating device 200 may be disposed at other positions of the check valve, which is not limited herein.
In the present embodiment, the center resonance frequencies (frequencies corresponding to the resonance strongest points) of at least two sound emitting devices 200 are different from each other. In a specific embodiment, taking the number of the sound generating devices 200 as 4, the resonance frequency bandwidth 20Hz of a single sound generating device 200 as an example, and not considering the structures such as a check valve, the four sound generating devices 200 are uniformly fixed on the connecting ring 300 at intervals along the circumferential direction of the connecting ring 300, and the noise spectrum of the smoke machine 10 is set to be 400Hz to 480Hz, then the central resonance frequencies of the four sound generating devices 200 are respectively 410Hz, 430Hz, 450Hz and 470Hz, the sound generating devices 200 generate compensating noise under the excitation of the suction airflow, the compensating noise is superposed with the body noise of the smoke machine main body 100, the noise spectrum of the smoke machine 10 can be improved by a certain amplitude within the frequency range of 400Hz to 480Hz, the specific loudness ratio and the specific loudness change rate of the spectrum of the smoke machine 10 are changed, and the sound quality of the whole noise of the smoke machine 10 is improved.
The foregoing description is only of embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A smoke machine, comprising:
a smoking machine body capable of forming a suction airflow;
the sound generating device is arranged on the flow path of the suction airflow so as to generate compensation noise under the excitation action of the suction airflow;
the sound generating device comprises a main body part and an extension part connected with the main body part, wherein the main body part is provided with a main cavity, and the extension part is provided with an auxiliary cavity communicated with the main cavity;
the main cavity is the cuboid setting, the auxiliary cavity is the cylinder setting, the axial of auxiliary cavity respectively with one of length direction and width direction and the thickness direction of main cavity is perpendicular.
2. A smoke machine according to claim 1, wherein the sound emitting means is provided with a resonant cavity through which the suction airflow passes to excite air in the resonant cavity to cause resonance, producing the compensating noise.
3. The smoke machine of claim 2 wherein said primary chamber and said secondary chamber together form said resonant cavity, said suction airstream being capable of flowing through said secondary chamber.
4. The smoke machine of claim 2 wherein the volume ratio of said auxiliary cavity to said main cavity is between 0.5% and 5.0%.
5. The range of claim 1, wherein the main cavity has a first end and a second end spaced apart along the length, the auxiliary cavity is disposed proximate the first end of the main cavity, and the ratio of the radius of the auxiliary cavity to the shortest distance from the peripheral side wall of the auxiliary cavity to the second end of the main cavity is 3% to 10%.
6. The smoke machine of claim 5 wherein said auxiliary chamber has a radius of 2mm to 10mm.
7. The smoke machine of claim 1 wherein said sound emitting devices are at least two in number, the center resonance frequencies of at least two of said sound emitting devices being different from each other.
8. The range hood according to claim 1, wherein the number of the sound emitting devices is at least two, the range hood further comprises a connecting ring, the connecting ring is fixed on the range hood main body and encloses a diversion space, at least two sound emitting devices are arranged on the connecting ring at intervals along the circumferential direction of the connecting ring, the auxiliary cavity of each sound emitting device is communicated with the diversion space through an opening formed on the outer end face of the extension part, the opening points to the diversion space, and the suction airflow flows through the diversion space and the opening along the axial direction of the connecting ring.
9. The smoke machine of claim 8 wherein the angle between the plane of the outer end face of the extension and the axis of the connecting ring is between 10 ° and 30 °.
10. The range hood of claim 9, further comprising a check valve, wherein the connecting ring is connected to an air outlet end of the check valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011379994.4A CN114576661B (en) | 2020-11-30 | 2020-11-30 | Smoke machine |
| PCT/CN2021/129644 WO2022111280A1 (en) | 2020-11-30 | 2021-11-09 | Range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011379994.4A CN114576661B (en) | 2020-11-30 | 2020-11-30 | Smoke machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114576661A CN114576661A (en) | 2022-06-03 |
| CN114576661B true CN114576661B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011379994.4A Active CN114576661B (en) | 2020-11-30 | 2020-11-30 | Smoke machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114576661B (en) |
| WO (1) | WO2022111280A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118499843A (en) * | 2024-07-16 | 2024-08-16 | 杭州老板电器股份有限公司 | Smoke machine and noise reduction method thereof |
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- 2020-11-30 CN CN202011379994.4A patent/CN114576661B/en active Active
-
2021
- 2021-11-09 WO PCT/CN2021/129644 patent/WO2022111280A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022111280A1 (en) | 2022-06-02 |
| CN114576661A (en) | 2022-06-03 |
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