CN107898379B - Nozzle, dust collector and dust removal method - Google Patents
Nozzle, dust collector and dust removal method Download PDFInfo
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- CN107898379B CN107898379B CN201711086358.0A CN201711086358A CN107898379B CN 107898379 B CN107898379 B CN 107898379B CN 201711086358 A CN201711086358 A CN 201711086358A CN 107898379 B CN107898379 B CN 107898379B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
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Abstract
The invention relates to the field of dust collection equipment, and discloses a nozzle, a dust collector and a dust removal method, wherein the nozzle comprises a nozzle main body (1) with an upstream port (M) and a downstream port (N) which are communicated, a generator for emitting low-frequency sound waves and a loudspeaker (2) for applying vibration energy to the low-frequency sound waves, the generator is installed in the loudspeaker (2), the loudspeaker (2) is installed at the upstream port (M) of the nozzle main body (1), and the low-frequency sound waves generated by the generator can be synthesized into beat frequency waves and are emitted from the downstream port (N) to shake particulate matters to be cleaned. Because the adopted low-frequency sound wave is synthesized into the beat frequency wave to vibrate the particles to be cleaned, the particles to be cleaned adhered to the floor or hidden in the gap can be vibrated, so that dust can be conveniently sucked away by dust suction equipment, the cleaning effect is ideal, meanwhile, the noise is small, and the objects to be cleaned cannot be damaged, thereby better meeting the requirement of thorough cleaning of a user.
Description
Technical Field
The invention relates to the technical field of dust collection equipment, in particular to a nozzle, a dust collector with the nozzle and a dust collection method.
Background
The prior art dust suction devices generally collect dust by sweeping with a rolling brush like a broom, and then suck the dust into the cleaner. This prevents the crevices, the carpet roots and the dust adhering to the floor from being thoroughly cleaned. For example, when the suction force of the cleaner is tested, the rolling cleaning effect of the brush is not good due to the large gaps between the carpet hairs of the dust spread on the carpet. In addition, when cleaning is carried out by using a method of beating bedding by using a vibration motor, the vibration noise is large, the influence is generated on normal life, the problems of overcurrent and the like can be caused by motor stalling, and when the vibration motor is used for directly beating a cleaning object, the possibility of damaging the cleaning object can be caused, and the user demand can not be better met.
Therefore, there is a need to design a nozzle having an excellent dust cleaning effect and less noise, a vacuum cleaner having the same, and a dust removing method.
Disclosure of Invention
The invention aims to solve the problems of incomplete dust cleaning or high noise in the prior art, and provides a nozzle which is ideal in dust cleaning effect and low in noise.
Another object of the present invention is to provide a vacuum cleaner comprising the above nozzle.
Still another object of the present invention is to provide a dust removing method.
In order to achieve the above object, the present invention provides, in one aspect, a nozzle including a nozzle body having an upstream port and a downstream port therethrough, a generator for emitting low frequency sound waves, the generator being mounted in the speaker, and a speaker for applying vibration energy to the low frequency sound waves, the speaker being mounted at the upstream port of the nozzle body, the low frequency sound waves generated by the generator being capable of synthesizing beat waves and being emitted from the downstream port for vibrating particulate matter to be cleaned.
Preferably, the number of generators is at least one or at least two, wherein,
when the number of generators is at least two: the generator comprises a first generator and a second generator, the first generator is used for emitting first sound waves with first frequency, the second generator is used for emitting second sound waves with second frequency, the distance between the first generator and the surface to be irradiated is equal to that between the second generator and the surface to be irradiated, and the first frequency is not equal to the second frequency so that the first sound waves and the second sound waves can be synthesized into beat frequency waves;
when the number of the generators is at least one, the generators can emit the first sound wave of the first frequency and emit the second sound wave of the second frequency within a set time, the second frequency is not equal to the first frequency, so that the second sound wave and the reflected wave of the first sound wave reflected from the irradiation surface can be synthesized into beat waves, the distance between the generators and the irradiation surface is L, and the set time t is 2L/v, wherein v is the propagation speed of the sound wave, or the nozzle comprises a transmitter, the generators can emit third sound waves of a third frequency, the third sound waves can generate fourth sound waves of a fourth frequency after passing through the transmitter, the third frequency is equal to the sum of the first frequency and the second frequency, the fourth frequency is equal to the difference between the first frequency and the second frequency, and the third sound waves and the fourth sound waves can be synthesized into beat waves.
Preferably, the difference between the first frequency and the second frequency ranges from 6 to 10 Hz.
Preferably, the nozzle body includes a cylindrical fresnel region provided with the upstream port, the speaker is spherical and has a radius equal to that of the cylindrical fresnel region, the length of the fresnel region is from the generator to a last position of a maximum sound pressure of the sound waves, and the last position is X, X ═ R2And/lambda, wherein R is the radius of the vibration ion of the sound wave source or the radius of the loudspeaker, and lambda is the wavelength.
Preferably, the nozzle body comprises a trumpet shaped helmholtz region with a small end connected in alignment with the fresnel region and a large end provided with the downstream port.
A second aspect of the invention provides a vacuum cleaner comprising a suction nozzle and the nozzle located at a side of the suction nozzle; or, the dust collector comprises a suction nozzle and the nozzle positioned on the side surface of the suction nozzle, and the side wall of the trumpet-shaped Helmholtz area close to the suction nozzle is linear.
A third aspect of the present invention provides a dust removing method, including: irradiating a surface to be cleaned by using beat waves synthesized by low-frequency sound waves so as to shake up particles to be cleaned on the surface to be cleaned, and absorbing the shaken particles to be cleaned by using a dust collector.
Preferably, synthesizing the beat wave by the low frequency sound wave includes at least one of the following three methods:
the method comprises the following steps: enabling a first generator and a second generator to simultaneously emit a first sound wave of a first frequency and a second sound wave of a second frequency respectively, wherein the first sound wave and the second sound wave can synthesize beat frequency waves;
a method 2 of generating a first sound wave of the first frequency by a generator and generating a second sound wave of the second frequency within a set time, wherein the second sound wave can be synthesized with a reflected wave of the first sound wave reflected from a surface to be cleaned into a beat wave, the distance from the generator to the surface to be cleaned is L, the set time is t, t is 2L/v, and v is the propagation speed of the sound wave, and
the method 3 comprises the following steps: and forming a fourth sound wave with the frequency of the difference between the first frequency and the second frequency by a transmitter through a third sound wave with the frequency of the sum of the first frequency and the second frequency, wherein the third sound wave and the fourth sound wave can be synthesized into a beat wave.
Preferably, the difference between the first frequency and the second frequency ranges from 6 to 10 Hz.
Preferably, the dust removing method uses the dust collector.
In the technical scheme, because the adoption is that the low frequency sound wave synthesis beat frequency ripples come to shake and wait to clear up the particulate matter, can shake the adhesion on the floor or hide the particulate matter of waiting to clear up in the gap, make things convenient for dust collecting equipment to absorb away the dust, clean the effect ideal, the noise is less simultaneously and can not produce the injury to cleaning the object to can satisfy the demand that the user thoroughly cleaned better.
Drawings
FIG. 1 is a schematic view of a partial structure of a nozzle according to a preferred embodiment of the present invention;
FIG. 2 is a waveform diagram of a wave of two frequencies synthesized into one wave;
FIG. 3 is a partial schematic view of a vacuum cleaner in accordance with a preferred embodiment of the present invention;
fig. 4 is a partial structural view of another vacuum cleaner in accordance with a preferred embodiment of the present invention.
Description of the reference numerals
1 nozzle body 2 speaker
11 fresnel zone 12 helmholtz zone
M upstream port N downstream port
10 suction nozzle 20 nozzle
D dust F floor
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves.
The transmission speed of the sound wave is about 340m/s in the normal temperature atmospheric environment and its value is proportional to the temperature, the transmission speed of the sound wave is greatly different depending on the type of the medium, the speed in water is about 1500m/s, the transmission speed on a solid such as iron is about 5000m/s, the value is generally called the vibration number (unit Hz) of the sound wave, and the distance between the compression part and the compression part is called the wavelength of the sound wave, which is related to the transmission speed of the sound wave, namely the sound wave transmission speed, the frequency is × m/s.
Sonic waves can be seen as fluctuations of longer wavelengths of tens of centimeters to tens of meters. The physical strength of the sound wave is determined by the sound wave passing through the inside of the objectThe sound pressure experienced at a certain point is measured either as the energy power per second per unit area of the object. Unit used μ b and W/cm2And (4) showing. The audible energy normally released from a sound source spans a wide range, e.g. 10 for whisper-8W, big sound wave is 10-3W, the sound wave of the extreme strong sound of the orchestral performance is 10W, and the jet aircraft can release 105W energy.
The sound wave can propagate all the materials, and the propagation speed of the sound wave is different according to the density of the materials. The wave motion of the sound wave is caused by the elasticity of the object due to compression. When the bulk modulus of a general substance is B and the density is rho, the sound velocity of the substance in an object is
In the air, considering the influence of temperature on the density, the sound speed is 340+0.6 (air temperature-15) m/s.
The present application is to increase the amplitude between sound waves of 100Hz or less, and to vibrate the dust adhering thereto by utilizing the reinforcing interference between sound waves, thereby facilitating the suction of dust. Namely, the scheme that the low-frequency sound wave is utilized to vibrate the particles (such as dust) to be cleaned, which are attached to the surface, so that the cleaning efficiency is improved obviously under the same suction pressure.
Specifically, the invention provides a nozzle, which comprises a nozzle body 1 with an upstream port M and a downstream port N which are communicated, a generator for emitting low-frequency sound waves and a loudspeaker 2 for applying vibration energy to the low-frequency sound waves, wherein the generator is arranged in the loudspeaker 2, the loudspeaker 2 is arranged at the upstream port M of the nozzle body 1, and the low-frequency sound waves generated by the generator can be synthesized into beat frequency waves and emitted from the downstream port N to vibrate the particles to be cleaned.
Wherein, the frequency range of the low-frequency sound wave is 20Hz-100 Hz. The application selects the low-frequency sound wave of 20-100Hz for dust removal, and considers that the dust collector cleans a certain distance away from the ground, the low-frequency sound wave energy has larger diffusivity than ultrasonic waves, and the beating area of the low-frequency sound wave is larger than the ultrasonic waves in the transmission of energy in the air, so that dust in a larger range can be shaken, and the cleaning efficiency is higher.
In the above-described technical solution, as shown in fig. 1, the nozzle includes a nozzle body 1 having an upstream port M and a downstream port N penetrating therethrough, a generator for emitting low frequency sound waves, and a speaker 2 for applying vibration energy to the low frequency sound waves, the generator is mounted in the speaker 2, the speaker 2 is mounted at the upstream port M of the nozzle body 1, the low-frequency sound waves generated by the generator can be synthesized into beat waves and emitted from the downstream port N to shake up the particles to be cleaned, because the low-frequency sound wave is adopted to synthesize the beat wave to shake the particles to be cleaned, the particles to be cleaned which are adhered to the floor or hidden in the gap can be shaken, the dust suction device is convenient to suck away the dust, the cleaning effect is ideal, meanwhile, the noise is low, and the cleaning object cannot be damaged, so that the requirement of thorough cleaning of a user can be better met.
Since the ground surface has valleys (340/N L) (N is 2k, k is a natural number, L is a distance from the source to the reflecting surface) during the process that the sound wave with a single frequency is output from the sound source and reflected from the ground surface, a stationary standing wave is formed, the energy of the sound wave in the valleys is 0, no sound pressure is generated, the vibration energy of the ground surface is 0, and the attachment (the particulate matter to be cleaned, such as dust) cannot be vibrated, therefore, two sound waves with similar frequencies can be synthesized to generate beat frequency waves, so as to realize the transmission of the vibration energy according to different distances, and the embodiment of synthesizing the wave with beat frequency by the low frequency sound waves has various embodiments, and the beat frequency can be formed by one generator, and the beat frequency can be formed by two generators, therefore, preferably, the number of the generators is at least one or at least two generators,
When the number of generators is at least two: the generator comprises a first generator and a second generator, the first generator is used for emitting first sound waves with first frequency, the second generator is used for emitting second sound waves with second frequency, the distance between the first generator and the second generator and a surface to be irradiated is equal, and the first frequency is not equal to the second frequency so that the first sound waves and the second sound waves can be synthesized into beat frequency waves. That is, a scheme of using two sound sources to initiate signals with different frequencies, synthesizing at a certain point and obtaining beat frequency, there is no specific requirement between the positions of the two sound sources (the first generator and the second generator), as long as the two sound sources are both within a specific distance range from the ground. If the distance from the nozzle to the ground is assumed to be 5cm, the two sound sources may be located on a circle having a radius of 5cm with respect to a certain point on the ground.
When the number of the generators is at least one, two embodiments of forming a beat frequency may be included as follows:
The generator is capable of emitting a first sound wave of a first frequency and emitting a second sound wave of a second frequency within a set time, the second frequency is not equal to the first frequency, so that the second sound wave can be synthesized into a beat wave with a reflected wave of the first sound wave reflected from an irradiation surface, the distance from the generator to the irradiation surface is L, and the set time t is 2L/v, wherein v is a propagation speed of the sound wave.
For simple simulation of standing waves, assuming that the first sonic wave is a sin (kx + wt) and the reflected wave is a sin (kx-wt), the two resultant waves would be 2A sin (kx) cos (wt). At the point where kx is n pi, there will always be a constant wave of 0. In order to avoid the stationary wave, w is changed to fc in 2 pi fc, and the second frequency of the second sound wave is set to fc + df, thereby avoiding the occurrence of the stationary wave. To form the beat frequency, a fixed frequency is overlapped with its adjacent frequency waveform to form various shock waves. As shown in fig. 2, the first sound wave y1 is sin (2 pi f1), the second sound wave y2 is sin (2 pi f2), and the resultant wave y1+ y2 of y1 and y2 is sin (2 pi f1) + sin (2 pi f2) is 2sin (pi (f1+ f2) cos (pi (f1-f2)), where f1 is a first frequency, f2 is a second frequency, f1+ f2 is a carrier frequency of the resultant wave, and f1-f2 is a frequency at which an envelope wave (envelope wave) is presented by a low frequency.
Embodiment 3
The nozzle comprises a signal transmitter, the generator can emit a third sound wave with a third frequency, the third sound wave can generate a fourth sound wave with a fourth frequency after passing through the signal transmitter, the third frequency is equal to the sum of the first frequency and the second frequency, the fourth frequency is equal to the difference between the first frequency and the second frequency, and the third sound wave and the fourth sound wave can synthesize beat waves. That is, the sound wave is amplified, and beat frequency wave can be formed by high-power amplitude modulation. Specifically, Amplitude Modulation (AM) is a method in which the frequency of the transmission carrier is set to F3, the frequency of the signal to be transmitted is set to F4, and the frequency of the carrier F3 in the AM transmitter is used to generate an F4 signal with a difference of 6 to 10 Hz. The signal generated in the transmitter may be represented as follows: x (t) { a + b × cos (2 pi × F4 × t) } cos (2 pi × F3 × t) }, in this formula, F3 is equal to F1+ F2, and F4 is equal to F1-F2.
And for synthesizing beat frequency, preferably, the difference between the first frequency and the second frequency is in the range of 6-10 Hz. That is, the beat frequency can be generated when f1-f2 is 6-10Hz, similar to amplitude modulation.
Preferably, the nozzle body 1 includes a cylindrical fresnel region 11 provided with the upstream port M, the speaker 2 is spherical and has a radius equal to that of the cylindrical fresnel region 11, the length of the fresnel region 11 is from the generator to a final position of maximum sound pressure of sound waves, and the final position is X, X ═ R2Where R is the radius of the vibrating ions of the sound source or the radius of the loudspeaker 2 and λ is the wavelength. The Fresnel zone (Fresnel zone) is the most important point where the fluctuations from the source of sound cannot directly relate the sound pressure to the distance due to interferenceA small area, also called the short-range interference band. The fresnel zone is the last position on the X-axis where the maximum sound pressure is generated, if the source waveform is oriented along the X-axis. The fresnel region is a value obtained by dividing the square of the radius (R) of the vibrating particles from the sound wave source of the signal generation source to the sound wave source by the wavelength λ. By X, X ═ R2Where, assuming that the single frequency is 100Hz, R is 0.03m, and λ v/f is 340/100 is 3.4m, X is 0.0009/3.4 m or more and is assigned to 0.00024m or more as a fresnel zone, so that the sound wave is transmitted at the point where the sound pressure is maximum. Utilize space reinforcement to interfere between two sound sources, can be comprehensive concentrate on ground with the sound pressure to the realization is shaken the particulate matter of treating the clearance, obtains better cleaning effect.
In order to better guide the sound waves and minimize the loss of sound wave energy, it is preferred that the nozzle body 1 comprises a trumpet-shaped helmholtz region 12 with a small end connected in alignment with the fresnel region 11 and a large end provided with the downstream port N. The energy in the Helmholtz region (Helmholtz region) decreases inversely with the square of the distance. Without the helmholtz region, the portion with sharp changes in density and multiples of sound velocity results in sound wave reflections. While the conditions that can be reflected are progressively attenuated in the helmholtz region so that the sound waves can be better propagated. Unlike the general structure, the helmholtz region may be formed in a flare shape of about 15 degrees, as shown in fig. 1.
A second aspect of the invention provides a vacuum cleaner comprising a suction nozzle 10 and the above-mentioned nozzle 20 located at a side of the suction nozzle 10; or the dust collector comprises a suction nozzle 10 and the nozzle 20 positioned on the side surface of the suction nozzle 10, and the side wall of the Helmholtz area in the shape of the trumpet is linear and close to the suction nozzle. Irradiating low-frequency sound waves in a frequency band of 20Hz-100Hz, controlling the sound waves irradiated to the ground to be the highest sound pressure, and designing a horn structure for better guiding the sound waves to reduce the loss of sound wave energy to the lowest. Further, since the air pressure in the vicinity of the nozzle duct in the middle of the vacuum cleaner structure is close to vacuum and the sound wave passing through the trumpet-shaped helmholtz region is inclined toward the nozzle, the floor cannot be vibrated, and therefore, as shown in fig. 3, the surface of the trumpet-shaped helmholtz region close to the nozzle is a linear structure, and the side surface (portion adjacent to the floor) away from the nozzle is in the form of a trumpet. In addition, as shown in fig. 4, the number of nozzles installed at the side of the suction nozzle of the cleaner may be two, and may be a certain distance from the suction nozzle, and if the surface to be cleaned is a floor F and the particulate matter to be cleaned is dust D, the dust D distributed between the gaps of the carpet hairs is easily dropped from the attachment under the vibration of the beat wave sprayed from the nozzles 20, and is sucked into the suction nozzle 10 of the cleaner, so that a good cleaning effect can be achieved and noise is small.
A third aspect of the present invention provides a dust removing method, including: irradiating a surface to be cleaned by using beat waves synthesized by low-frequency sound waves so as to shake up the particles to be cleaned on the surface to be cleaned, and sucking away the shaken particles to be cleaned by using a dust collector. Because the adopted low-frequency sound wave is synthesized into the beat frequency wave to vibrate the particles to be cleaned, the particles to be cleaned adhered to the floor or hidden in the gap can be vibrated, so that dust can be conveniently sucked away by dust suction equipment, the cleaning effect is ideal, meanwhile, the noise is small, and the objects to be cleaned cannot be damaged, thereby better meeting the requirement of thorough cleaning of a user.
There are various embodiments of synthesizing a wave having a beat frequency by a low frequency sound wave, and preferably, synthesizing a beat frequency wave by a low frequency sound wave includes at least one of the following three methods:
the method comprises the following steps: enabling a first generator and a second generator to simultaneously emit a first sound wave of a first frequency and a second sound wave of a second frequency respectively, wherein the first sound wave and the second sound wave can synthesize beat frequency waves;
a method 2 of generating a first sound wave of the first frequency by a generator and generating a second sound wave of the second frequency within a set time, wherein the second sound wave can be synthesized with a reflected wave of the first sound wave reflected from a surface to be cleaned into a beat wave, the distance from the generator to the surface to be cleaned is L, the set time is t, t is 2L/v, and v is the propagation speed of the sound wave, and
the method 3 comprises the following steps: and forming a fourth sound wave with the frequency of the difference between the first frequency and the second frequency by a transmitter through a third sound wave with the frequency of the sum of the first frequency and the second frequency, wherein the third sound wave and the fourth sound wave can be synthesized into a beat wave.
And for synthesizing beat frequency, preferably, the difference between the first frequency and the second frequency is in the range of 6-10 Hz. The beat frequency can be generated when f1-f2 is 6-10Hz, which is similar to amplitude modulation. And preferably, the dust removing method uses the cleaner of the second aspect of the invention.
In summary, the vacuum cleaner using low frequency sound wave to synthesize the beat frequency wave to shake up the dust does not use the mechanical motion energy, but uses the sound wave energy to apply the shock wave to the object, which is less noisy and the noise can be controlled below the audible frequency band compared with the mechanical vibration, and at the same time, the damage of the object to be cleaned (such as carpet hair) caused by the mechanical friction can be reduced, on one hand, the dust can be cleaned more deeply, the cleaning efficiency can be improved, and the purpose of thorough cleaning can be realized, and on the other hand, the service life of the object to be cleaned can be prolonged.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A nozzle, characterized in that it comprises a nozzle body (1) having an upstream port (M) and a downstream port (N) therethrough, a generator for emitting low frequency sound waves, said generator being mounted within said speaker (2), and a speaker (2) for applying vibrational energy to the low frequency sound waves, said speaker (2) being mounted at the upstream port (M) of said nozzle body (1), said low frequency sound waves generated by said generator being capable of synthesizing beat waves and being emitted from said downstream port (N) for vibrating up particulate matter to be cleaned;
the nozzle body (1) comprises a cylindrical Fresnel zone (11) provided with the upstream port (M), and the loudspeaker (2) is spherical and has a radius equal to that of the cylindrical Fresnel zone (11).
2. The nozzle of claim 1, wherein the number of generators is at least one or at least two, wherein,
when the number of generators is at least two: the generator comprises a first generator and a second generator, the first generator is used for emitting first sound waves with first frequency, the second generator is used for emitting second sound waves with second frequency, the distance between the first generator and the surface to be irradiated is equal to that between the second generator and the surface to be irradiated, and the first frequency is not equal to the second frequency so that the first sound waves and the second sound waves can be synthesized into beat frequency waves;
when the number of the generators is at least one, the generators can emit the first sound wave of the first frequency and emit the second sound wave of the second frequency within a set time, the second frequency is not equal to the first frequency, so that the second sound wave and the reflected wave of the first sound wave reflected from the irradiation surface can be synthesized into beat waves, the distance between the generators and the irradiation surface is L, and the set time t is 2L/v, wherein v is the propagation speed of the sound wave, or the nozzle comprises a transmitter, the generators can emit third sound waves of a third frequency, the third sound waves can generate fourth sound waves of a fourth frequency after passing through the transmitter, the third frequency is equal to the sum of the first frequency and the second frequency, the fourth frequency is equal to the difference between the first frequency and the second frequency, and the third sound waves and the fourth sound waves can be synthesized into beat waves.
3. The nozzle of claim 2, wherein the difference between the first frequency and the second frequency ranges from 6 to 10 Hz.
4. A nozzle according to any one of claims 1-3, wherein the fresnel zone (11) has a length from the generator to the last position of maximum sound pressure of the sound waves, X-R2Where R is the radius of the vibrating ions of the sound wave source or the radius of the loudspeaker (2) and lambda is the wavelength.
5. A nozzle according to claim 4, characterized in that the nozzle body (1) comprises a trumpet-shaped Helmholtz zone (12) having a small end connected in alignment with the Fresnel zone (11) and a large end provided with the downstream port (N).
6. A kind of dust collector, characterized by:
the vacuum cleaner comprising a nozzle (10) and a nozzle (20) according to any one of claims 1-4 located at a side of the nozzle (10); or the like, or, alternatively,
the vacuum cleaner comprising a nozzle (10) and a nozzle (20) according to claim 5 located at a side of the nozzle (10), the horn-shaped Helmholtz region being rectilinear adjacent to a side wall of the nozzle.
7. A dust removal method, characterized by comprising:
the use of the nozzle of claim 1 to achieve a concentration of sonic pressure at the surface: the method comprises the steps of irradiating a surface to be cleaned by using beat frequency waves synthesized by low-frequency sound waves, concentrating sound pressure on the ground, shaking up particles to be cleaned on the surface to be cleaned, and absorbing the shaken up particles to be cleaned by using a dust collector.
8. The dust removal method according to claim 7, wherein synthesizing a beat wave by a low-frequency sound wave includes at least one of the following three methods:
the method comprises the following steps: enabling a first generator and a second generator to simultaneously emit a first sound wave of a first frequency and a second sound wave of a second frequency respectively, wherein the first sound wave and the second sound wave can synthesize beat frequency waves;
a method 2 of generating a first sound wave of the first frequency by a generator and generating a second sound wave of the second frequency within a set time, wherein the second sound wave can be synthesized with a reflected wave of the first sound wave reflected from a surface to be cleaned into a beat wave, the distance from the generator to the surface to be cleaned is L, the set time is t, t is 2L/v, and v is the propagation speed of the sound wave, and
the method 3 comprises the following steps: and forming a fourth sound wave with the frequency of the difference between the first frequency and the second frequency by a transmitter through a third sound wave with the frequency of the sum of the first frequency and the second frequency, wherein the third sound wave and the fourth sound wave can be synthesized into a beat wave.
9. A method according to claim 8, wherein the difference between the first frequency and the second frequency is in the range of 6-10 Hz.
10. A dust removing method according to any one of claims 7 to 9, wherein the dust removing method uses the dust collector according to claim 6.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325656Y (en) * | 1998-01-09 | 1999-06-23 | 武玉堂 | Low frequency sound wave apparatus for removing ash |
| US20040107522A1 (en) * | 2002-12-03 | 2004-06-10 | Paas Edward L. | Floor cleaning device with motorized vibratory head |
| CN1849987A (en) * | 2005-04-22 | 2006-10-25 | 三星光州电子株式会社 | Suction brush assembly having ultrasonic oscillator and a vacuum cleaner having the same |
| CN101711969A (en) * | 2009-10-30 | 2010-05-26 | 江苏大学 | Device and method for biological processing with pulsed multi-frequency ultrasonic waves in sweep-frequency mode and use thereof |
| CN103433248A (en) * | 2013-08-28 | 2013-12-11 | 江苏惠能声波技术有限公司 | Acoustic wave dust removal device |
| CN204093185U (en) * | 2014-05-21 | 2015-01-14 | 索菲菲 | A kind of time acoustic energy reverse gas cleaning device |
-
2017
- 2017-11-07 CN CN201711086358.0A patent/CN107898379B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325656Y (en) * | 1998-01-09 | 1999-06-23 | 武玉堂 | Low frequency sound wave apparatus for removing ash |
| US20040107522A1 (en) * | 2002-12-03 | 2004-06-10 | Paas Edward L. | Floor cleaning device with motorized vibratory head |
| CN1849987A (en) * | 2005-04-22 | 2006-10-25 | 三星光州电子株式会社 | Suction brush assembly having ultrasonic oscillator and a vacuum cleaner having the same |
| CN101711969A (en) * | 2009-10-30 | 2010-05-26 | 江苏大学 | Device and method for biological processing with pulsed multi-frequency ultrasonic waves in sweep-frequency mode and use thereof |
| CN103433248A (en) * | 2013-08-28 | 2013-12-11 | 江苏惠能声波技术有限公司 | Acoustic wave dust removal device |
| CN204093185U (en) * | 2014-05-21 | 2015-01-14 | 索菲菲 | A kind of time acoustic energy reverse gas cleaning device |
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