CN115095913A - Ventilation assembly, air supply device and ventilation noise reduction control method - Google Patents
Ventilation assembly, air supply device and ventilation noise reduction control method Download PDFInfo
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- CN115095913A CN115095913A CN202210615872.3A CN202210615872A CN115095913A CN 115095913 A CN115095913 A CN 115095913A CN 202210615872 A CN202210615872 A CN 202210615872A CN 115095913 A CN115095913 A CN 115095913A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 191
- 230000009467 reduction Effects 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/40—Noise
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a ventilation assembly, an air supply device and a ventilation noise reduction control method, wherein the ventilation assembly comprises: the device comprises a ventilation guide assembly, an audio acquisition component and a noise reduction component, wherein the ventilation guide assembly is provided with an airflow channel; the audio acquisition component is arranged at the upstream of the airflow channel and is used for acquiring airflow noise parameters; the noise reduction component is arranged at the downstream of the airflow channel and used for outputting noise reduction sound waves according to the noise parameters collected by the audio collection component. According to the ventilation assembly, the audio acquisition component is used for acquiring relevant parameters of noise, and the noise reduction component is used for outputting noise reduction sound waves according to the noise parameters, so that the noise is weakened, the purpose of noise reduction is achieved, and the noise reduction mode can achieve accurate noise reduction.
Description
Technical Field
The invention relates to the technical field of ventilation and noise reduction, in particular to a ventilation assembly, an air supply device and a ventilation and noise reduction control method.
Background
Ventilation assemblies are commonly used in a variety of devices requiring ventilation, such as: fresh air system of air conditioner. At present, people are increasingly demanding on the indoor air quality, and the fresh air conditioner combines the functions of two major equipment of air conditioner and fresh air machine, realizes the regulation and the taking a breath of indoor air simultaneously, receives user's favor more and more.
The comfort experience of the fresh air conditioner is mainly reflected in the experience of fresh air volume and the experience of fresh air noise. The large air volume can quickly reduce CO in the room 2 The concentration and the air freshness are improved, and meanwhile, the large air quantity also brings about the problem of large noise. The air-out mode of present new trend is comparatively single, and the air-out direction is fixed, and its shortcoming includes: firstly, a fresh air outlet is fixed, and fresh air can be reflected after meeting a ceiling or other obstacles, so that noise is increased; secondly, if the noise is reduced by reducing the air volume, the problem of insufficient fresh air volume is caused. Therefore, the current ventilation assembly has the problems of high noise, insufficient ventilation quantity and the like.
Disclosure of Invention
To the problem that exists among the prior art, this application proposes a changeable new trend air conditioner new trend air-out mode, on the basis of this air-out mode, designs the new trend and initiatively falls the device of making an uproar.
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an embodiment of the present invention proposes a ventilation assembly comprising:
a ventilation guide assembly having an airflow passage;
the audio acquisition component is arranged at the upstream of the airflow channel and is used for acquiring airflow noise parameters; and
the noise reduction component is arranged at the downstream of the airflow channel and used for outputting noise reduction sound waves according to the noise parameters collected by the audio collection component, and the distance from the audio collection component to the noise reduction component along the circulation path of the airflow channel is adjustable.
According to the ventilation assembly, the audio acquisition component is used for acquiring relevant parameters of noise, and the noise reduction component is used for outputting noise reduction sound waves according to the noise parameters, so that the noise is weakened, the purpose of noise reduction is achieved, and the noise reduction mode can achieve accurate noise reduction.
Optionally, the audio acquisition component comprises at least one microphone and/or the noise reduction component comprises at least one speaker.
Optionally, the audio acquisition component includes a plurality of microphones, and the plurality of microphones are disposed at the air inlet of the airflow channel;
the noise reduction component comprises a plurality of loudspeakers, and the loudspeakers are arranged at an air outlet of the airflow channel.
Optionally, the ventilation guide assembly comprises a first ventilation pipe and a second ventilation pipe connected with the first ventilation pipe, and the airflow channel comprises a first airflow channel formed on the first ventilation pipe and a second airflow channel formed on the second ventilation pipe; the second ventilation pipe can be switched between at least a first position and a second position relative to the first ventilation pipe, and the air outlet heads of the second ventilation pipe at the first position and the second position are in different directions;
the audio acquisition component is arranged in the first airflow channel, and the noise reduction component is arranged in the second airflow channel.
Optionally, the second ventilation pipe is coaxially disposed with the first ventilation pipe at the first position, and the second ventilation pipe is perpendicular to the first ventilation pipe at the second position.
Optionally, the ventilation guide assembly further comprises a first drive mechanism for driving the second ventilation duct to switch between the first position and the second position.
Optionally, the first driving mechanism includes a first driving motor fixed to the first ventilation pipe and a first rack fixed to the second ventilation pipe;
the first driving motor is in transmission connection with the first rack and drives the second ventilation pipe to switch between the first position and the second position by driving the first rack.
Optionally, the first rack comprises a straight line section and an arc section, the first driving motor drives the arc section to adjust the direction of the air outlet of the second ventilation pipe, and the first driving motor drives the straight line section to adjust the distance of the second ventilation pipe retracted into the first ventilation pipe.
Optionally, one of the first ventilation pipe and the second ventilation pipe is provided with a sliding block, and the other one of the first ventilation pipe and the second ventilation pipe is provided with a slideway, and the sliding block is in sliding fit with the slideway;
when the first driving motor drives the arc section, the sliding block is arranged at the end part of the slide way to rotate, and when the first driving motor drives the straight section, the sliding block slides in the slide way.
Optionally, the end of the first ventilation pipe has a first notch, and the end of the second ventilation pipe has a second notch, and the second ventilation pipe makes the first notch and the second notch butt at the second position, so that the first air flow channel and the second air flow channel are in sealed communication.
Optionally, the ventilation guide assembly further comprises a second driving mechanism, and the second driving mechanism is used for driving the ventilation assembly to retract into the shell of the installed air supply device.
Optionally, the second driving mechanism includes a second driving motor and a second rack in transmission connection with the second driving motor, one of the second driving motor and the second rack is fixed to the first ventilation pipe, and the other is adapted to be fixedly connected to a housing of the installed air supply device.
The embodiment of the invention further provides an air supply device which comprises a shell and the ventilation assembly, wherein the shell is provided with a ventilation opening, and the airflow channel is communicated with the ventilation opening.
Optionally, the vent assembly is capable of extending from the vent opening or retracting into the vent opening.
The embodiment of the invention further provides a ventilation noise reduction control method of the ventilation assembly, which comprises the following steps:
the audio acquisition component acquires noise parameters in the airflow channel;
analyzing the collected noise parameters and judging whether the noise parameters meet a noise reduction threshold value;
and if the noise reduction threshold is met, the noise reduction part is started to output noise reduction sound waves so as to weaken noise.
Optionally, analyzing the collected noise parameters comprises: the amplitude of the frequency bin to be cancelled is determined and the phase of the desired cancellation frequency bin is calculated.
Optionally, the amplitude of the noise reduction sound wave output by the noise reduction component is the same as the amplitude of the collected noise, and the phase of the noise reduction sound wave is opposite to the phase of the collected noise.
Optionally, before the audio acquisition component acquires the noise parameter in the airflow channel, the method further includes determining whether the air supply device meets the requirement of a noise reduction spatial position, and if the requirement of the noise reduction spatial position is met, starting the audio acquisition component and the noise reduction component.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic structural diagram of an air blowing device according to an embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of an air blowing device according to an embodiment of the present invention;
FIG. 3 is an exploded view of a vent assembly in accordance with an embodiment of the present invention;
FIGS. 4-7 are schematic views of a vent assembly in various states, respectively, according to an embodiment of the present invention;
FIG. 8 is a schematic view of the second ventilation duct in one embodiment of the present invention;
FIG. 9 is a schematic view of the construction of a first vent tube in accordance with an embodiment of the present invention;
fig. 10 is a flow chart of a ventilation noise reduction control method according to an embodiment of the present invention.
Reference numerals:
10-a first vent-tube; 11-a first air flow channel; 12-a slide block; 13-a first notch;
20-a second vent pipe; 21-a second airflow channel; 22-a slide; 23-a second gap;
30-a microphone;
40-a loudspeaker;
50-a first drive mechanism; 51-a first drive motor; 52-a first rack;
60-a second drive mechanism; 61-a second drive motor; 62-a second rack;
70-a housing; 71-vent.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
This embodiment provides a ventilation assembly, mainly solves the big problem of noise when ventilating. The invention for solving the technical problem is mainly characterized in that an audio acquisition part and a noise reduction part are arranged in an airflow channel of the ventilation assembly, the audio acquisition part is used for acquiring relevant parameters of noise, and the noise reduction part is used for outputting noise reduction sound waves according to the noise parameters, so that the noise is weakened, and the purpose of reducing the noise is achieved.
Referring to fig. 1-9, in some embodiments, the vent assembly generally includes: the ventilation guide assembly, audio acquisition part and the noise reduction part. The ventilation guide assembly guides the direction of airflow so as to convey the airflow in a specified direction, and is provided with an airflow channel in which the airflow can flow.
The audio acquisition component is arranged at the upstream of the airflow channel and is used for acquiring airflow noise parameters, and the noise parameters comprise but are not limited to the amplitude of a noise frequency band, the phase of the frequency band and the like; the noise reduction component is arranged at the downstream of the airflow channel and used for outputting noise reduction sound waves according to the noise parameters collected by the audio collection component, the distance from the audio collection component to the noise reduction component along the circulation path of the airflow channel is adjustable, and the noise is mainly transmitted along the circulation path of the airflow channel, so that the output noise reduction sound waves are more accurate by adjusting the distance from the audio collection component to the noise reduction component on the circulation path, and the noise is more accurately reduced.
The noise reduction sound wave output by the noise reduction component has the same amplitude as the sound wave of the noise but opposite phase, so that the noise reduction sound wave and the noise can be offset, and the aim of weakening the ventilation noise is fulfilled.
The ventilation assembly of the embodiment can be applied to various devices with ventilation requirements, such as a fresh air conditioning system for conveying fresh air and a range hood for conveying oil smoke. The adopted noise reduction mode is to output specific sound waves according to noise parameters, so that the noise reduction is more accurate, and the omnibearing noise reduction effect can be realized.
In some embodiments, the audio capturing component includes at least one microphone 30, and the microphone 30 can capture a noise related parameter and can detect the noise parameter more accurately by setting a plurality of microphones 30. The noise reduction features include at least one speaker 40, the speaker 40 being capable of generating specific noise reducing sound waves to at least partially cancel the noise.
Specifically, the audio acquisition component includes a plurality of microphones 30, and the plurality of microphones 30 are disposed at the air inlet of the air flow channel, so as to detect the noise parameter at the air inlet; the noise reduction component comprises a plurality of loudspeakers 40, and the loudspeakers 40 are arranged at the air outlet of the air flow channel, so that noise reduction is implemented at the air outlet. This arrangement allows the microphone 30 to be located as far away from the speaker 40 as possible, thereby allowing enough algorithm running time to avoid inaccurate noise reduction due to the algorithm running speed being less than the noise propagation speed.
Illustratively, the audio capturing component includes 4 microphones 30, the 4 microphones 30 are distributed at equal intervals at the air inlet of the air flow channel, and the noise reducing component includes 2 speakers 40, and the air outlet of the air flow channel of the 2 speakers 40 is distributed at equal intervals. With respect to the number of microphones 30 and the number of speakers 40, those skilled in the art may adjust the specific number and specifications according to the accuracy of noise reduction and the noise reduction range.
In some embodiments, the ventilation guide assembly comprises a first ventilation pipe 10 and a second ventilation pipe 20 connected with the first ventilation pipe 10, the first ventilation pipe 10 is suitable for being connected with the inside of a shell of the mounted air supply device, an air inlet of an air flow channel is positioned in the first ventilation pipe 10, and an air outlet of the air flow channel is positioned in the second ventilation pipe 20.
The air flow passage comprises a first air flow passage 11 formed in the first ventilation pipe 10 and a second air flow passage 21 formed in the second ventilation pipe 20; the second ventilating pipe 20 can be switched at least between a first position and a second position relative to the first ventilating pipe 10, and the air outlet heads of the second ventilating pipe 20 at the first position and the second position are in different orientations; therefore, when in use, the orientation of the air outlet head of the second ventilation pipe 20 can be adjusted according to different installation environments. For example: when the second ventilation pipe 20 is at the first position, if the noise is large due to the air outlet of the second ventilation pipe 20 facing the ceiling, the second ventilation pipe 20 can be adjusted to the second position, and the second position can face the front side of the air supply device, so that the noise caused by the air flow blowing the ceiling is avoided.
From this, the orientation of air outlet can be adjusted as required to the direction subassembly that will ventilate to select specific air-out direction according to the environment of difference, thereby reach the purpose that reduces the air-out noise.
The ventilation guide component is not limited to only consisting of two pipes, and can be designed into 3 pipes, 4 pipes or even more pipes, so that the air outlet direction is more diversified. The air outlet direction is more flexible.
For the scheme that the ventilation guide assembly comprises the first ventilation pipe 10 and the second ventilation pipe 20 connected with the first ventilation pipe 10, the audio acquisition component can be arranged in the first air flow channel 11, and the noise reduction component can be arranged in the second air flow channel 21, so that the distance between the audio acquisition component and the noise reduction component can be increased as much as possible, and the audio acquisition component can feed back noise parameters to the noise reduction component more accurately.
Specifically, the audio collection component is disposed in the first ventilation pipe 10, the noise reduction component is disposed in the second ventilation pipe 20, the second ventilation pipe 20 can be switched between at least a first position and a second position relative to the first ventilation pipe 10, and when the second ventilation pipe 20 is at the first position and the second position, distances from the audio collection component to the noise reduction component along the circulation path of the airflow channel are different, so that the purpose of adjusting the distance from the audio collection component to the noise reduction component along the circulation path of the airflow channel can be achieved by switching the position of the second ventilation pipe 20.
In some embodiments, referring to FIG. 6, the second vent line 20 is disposed coaxially with the first vent line 10 in a first position, and referring to FIG. 4, the second vent line 20 is disposed perpendicular to the first vent line 10 in a second position. Therefore, the second ventilation pipe 20 blows air upward at the first position and blows air ahead at the second position.
For example: the ventilation assembly can realize the switching of air outlet before the air current and air outlet on, satisfies the different demands of user. Meanwhile, the audio acquisition component and the noise reduction component arranged in the airflow channel can actively reduce noise, so that the total noise values of different windscreens are reduced, the air supply noise is reduced, and the comfort is improved.
Specifically, referring to fig. 2 and 3, the ventilation guide assembly further includes a first drive mechanism 50, the first drive mechanism 50 being configured to drive the second ventilation duct 20 between the first position and the second position. The first driving mechanism 50 comprises a first driving motor 51 fixed on the first ventilation pipe 10 and a first rack 52 fixed on the second ventilation pipe 20; the first driving motor 51 is in transmission connection with the first rack 52, and drives the second ventilation pipe 20 to switch between the first position and the second position by driving the first rack 52. The motor-driven mode can make the control of the second ventilation pipe 20 by the first driving mechanism 50 faster and more accurate. Of course, the first driving mechanism 50 is not limited to this transmission manner, and those skilled in the art can select other transmission structures as needed as long as the requirement of adjusting the position of the second ventilation pipe 20 can be met.
In order to adjust the direction of the air outlet of the second ventilation pipe 20, the first rack 52 includes a straight line section and a circular arc section, the first driving motor 51 drives the circular arc section to adjust the direction of the air outlet of the second ventilation pipe 20, and the first driving motor 51 drives the straight line section to adjust the distance that the second ventilation pipe 20 retracts into the first ventilation pipe 10.
Specifically, when the first driving motor 51 drives the circular arc segment, the second ventilation pipe 20 rotates around the center of the circular arc segment, thereby changing the orientation of the air outlet, while when the first driving motor 51 drives the straight line segment, the orientation of the air outlet is unchanged, but the position is changed.
In some embodiments, one of the first ventilation tube 10 and the second ventilation tube 20 is provided with a slider 12, the other is provided with a slide 22, and the slider 12 is slidably fitted to the slide 22; when the first driving motor 51 drives the arc segment, the sliding block 12 rotates at the end of the slideway 22, and when the first driving motor 51 drives the straight segment, the sliding block 12 slides in the slideway 22.
The slide block 12 and the slide rail 22 can function as a guide so that the second ventilation pipe 20 rotates or moves according to a predetermined moving track. Referring to fig. 8 and 9, the slider 12 is disposed at an end of the first ventilation pipe 10, and the slide 22 is disposed on an outer wall of the second ventilation pipe 20. The slide 22 may be a linear groove.
Referring to fig. 8 and 9, the end of the first ventilation tube 10 has a first notch 13, the end of the second ventilation tube 20 has a second notch 23, and the second ventilation tube 20 has the first notch 13 and the second notch 23 butted up at the second position, so that the first air flow passage 11 and the second air flow passage 21 are in sealed communication.
Referring to fig. 4, the second ventilation pipe 20 is in a forward air-out state, the first driving mechanism 50 drives the second ventilation pipe 20 to make the second ventilation pipe 20 firstly switch to the position shown in fig. 5, and then the first driving mechanism 50 continues to drive the second ventilation pipe 20 to retract into the first ventilation pipe 10, so that the first gap 13 and the second gap 23 are shielded, thereby reaching the position shown in fig. 6.
In some embodiments, the ventilation guide assembly further comprises a second drive mechanism 60, the second drive mechanism 60 being for driving the ventilation assembly to retract into the housing 70 of the mounted air supply arrangement. The air supply means herein may comprise a ventilation assembly. And may be retracted into the housing 70 when the vent assembly is not in operation, as shown in figure 7.
Specifically, the second driving mechanism 60 includes a second driving motor 61 and a second rack 62 in transmission connection with the second driving motor 61, one of the second driving motor 61 and the second rack 62 is fixed to the first ventilation pipe 10, and the other is adapted to be fixedly connected with a housing 70 of the installed air supply device.
For example, the second driving motor 61 may be fixed to the housing 70, the second rack 62 is fixed to the inner wall of the first ventilation pipe 10, and the second driving motor 61 is activated to enable the second rack 62 to drive the first ventilation pipe 10 to retract into the housing 70.
Of course, the second driving mechanism 60 is not limited to this type of transmission, and those skilled in the art can select other transmission structures as needed, as long as the position adjustment requirement of the first ventilation pipe 10 can be met.
The present embodiment further provides an air supply device, which participates in fig. 1, wherein the air supply device includes a housing 70 and the ventilation assembly of any of the above embodiments, the housing 70 is provided with a ventilation opening 71, and the airflow channel is communicated with the ventilation opening 71. Other components of the air supply device are not the main improvements of the present solution and are therefore not described. The air supply device can be specifically an air conditioner fresh air fan.
In some embodiments, the vent assembly can extend from the vent opening 71 or retract into the vent opening 71. As shown in fig. 4 to 6, the ventilation assembly extends out of the ventilation opening 71, and as shown in fig. 7, the ventilation assembly is retracted into the ventilation opening 71, and under the condition of noise reduction and ventilation, the ventilation assembly extends out of the ventilation opening 71 to increase the distance between the audio acquisition part and the noise reduction part, so that the audio acquisition part can feed back noise parameters to the noise reduction part more accurately, and under the condition of not using noise reduction and ventilation, the ventilation assembly is retracted into the ventilation opening 71 to reduce the size of the whole machine, so that the shell of the whole machine is simpler.
The present embodiment further provides a ventilation and noise reduction control method for a ventilation assembly, where the ventilation assembly is the ventilation assembly of any of the above embodiments, and referring to fig. 10, the ventilation and noise reduction control method mainly includes: the audio acquisition component acquires noise parameters in the airflow channel; analyzing the collected noise parameters and judging whether the noise parameters meet a noise reduction threshold value; and if the noise reduction threshold is met, starting the noise reduction part to output noise reduction sound waves so as to weaken noise. That is to say, the method determines the noise reduction sound wave output by the noise reduction component by collecting the noise parameter, so that the noise reduction is more accurate, and the method can adapt to the noise reduction function of the noise of various frequency bands.
Wherein analyzing the collected noise parameters comprises: the amplitude of the frequency bin to be cancelled is determined and the phase of the desired cancellation frequency bin is calculated. Therefore, the amplitude of the sound wave of the noise reduction part is controlled to be the same as that of the noise, but the phases of the sound wave of the noise reduction part are opposite, and the purpose of canceling the noise is achieved.
For example, the amplitude of the noise reduction sound wave output by the noise reduction component is the same as the amplitude of the collected noise, the phase is opposite, and along with the change of the noise, the audio collection component collects the change of the noise parameter in the airflow channel, so that the parameter fed back to the noise reduction component changes, and the noise reduction sound wave output by the noise reduction component is automatically adjusted to correspond to the noise sound wave. Therefore, no matter how the air speed of the air flow in the ventilation assembly changes, the purpose of accurately reducing the noise can be achieved.
Furthermore, before the audio acquisition component acquires the noise parameters in the airflow channel, the method also comprises the step of judging whether the air supply device meets the requirement of the noise reduction space position, and if the requirement of the noise reduction space position is met, the audio acquisition component and the noise reduction component are started. That is to say, only when the air supply device is in the working state, the noise reduction is needed, and if the air supply device is not in the working state, the audio acquisition component and the noise reduction component can be closed, so that the electric energy is saved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (18)
1. A ventilation assembly, comprising:
a ventilation guide assembly having an airflow passage;
the audio acquisition component is arranged at the upstream of the airflow channel and is used for acquiring airflow noise parameters; and
the noise reduction component is arranged at the downstream of the airflow channel and used for outputting noise reduction sound waves according to the noise parameters collected by the audio collection component, and the distance from the audio collection component to the noise reduction component along the circulation path of the airflow channel is adjustable.
2. The ventilation assembly of claim 1, wherein the audio capture component comprises at least one microphone (30) and/or the noise reduction component comprises at least one speaker (40).
3. The ventilation assembly of claim 2, wherein the audio capture component comprises a plurality of microphones (30), the plurality of microphones (30) being disposed at the air inlet of the airflow passage;
the noise reduction component comprises a plurality of loudspeakers (40), and the loudspeakers (40) are arranged at an air outlet of the air flow channel.
4. The ventilation assembly of claim 1, wherein the ventilation guide assembly comprises a first ventilation tube (10) and a second ventilation tube (20) connected to the first ventilation tube (10), the airflow passage comprising a first airflow passage (11) formed in the first ventilation tube (10) and a second airflow passage (21) formed in the second ventilation tube (20); the second ventilation pipe (20) can be switched between at least a first position and a second position relative to the first ventilation pipe (10), and the air outlet heads of the second ventilation pipe (20) in the first position and the second position are in different orientations;
the audio acquisition component is arranged in the first air flow channel (11), and the noise reduction component is arranged in the second air flow channel (21).
5. The ventilation assembly according to claim 4, characterized in that the second ventilation tube (20) is arranged coaxially with the first ventilation tube (10) in the first position, the second ventilation tube (20) being arranged perpendicularly to the first ventilation tube (10) in the second position.
6. The vent assembly according to claim 4, further comprising a first drive mechanism (50), the first drive mechanism (50) for driving the second vent conduit (20) to switch between the first position and the second position.
7. The ventilation assembly according to claim 6, characterized in that the first drive mechanism (50) comprises a first drive motor (51) fixed to the first ventilation duct (10) and a first rack (52) fixed to the second ventilation duct (20);
the first driving motor (51) is in transmission connection with the first rack (52), and drives the second ventilation pipe (20) to switch between the first position and the second position by driving the first rack (52).
8. The ventilation assembly according to claim 7, characterized in that the first rack (52) comprises a straight section and a circular section, the first driving motor (51) drives the circular section to adjust the direction of the air outlet of the second ventilation pipe (20), and the first driving motor (51) drives the straight section to adjust the distance that the second ventilation pipe (20) is retracted into the first ventilation pipe (10).
9. The ventilation assembly according to claim 8, characterized in that one of said first ventilation duct (10) and said second ventilation duct (20) is provided with a slider (12) and the other is provided with a slide (22), said slider (12) being slidingly fitted to said slide (22);
when first driving motor (51) drive the circular arc section, slider (12) are in the tip of slide (22) rotates, first driving motor (51) drive during the straightway, slider (12) are in slide (22) slide.
10. The ventilation assembly according to claim 5, characterized in that the end of the first ventilation tube (10) has a first notch (13) and the end of the second ventilation tube (20) has a second notch (23), the second ventilation tube (20) in the second position having the first notch (13) in abutment with the second notch (23) to bring the first air flow passage (11) and the second air flow passage (21) into sealed communication.
11. The ventilation assembly of claim 5, further comprising a second drive mechanism (60), the second drive mechanism (60) being configured to drive the ventilation assembly to retract into the housing of the mounted blower.
12. The ventilation assembly according to claim 11, wherein the second driving mechanism (60) comprises a second driving motor (61) and a second rack gear (62) in transmission connection with the second driving motor (61), one of the second driving motor (61) and the second rack gear (62) is fixed to the first ventilation pipe (10), and the other is adapted to be fixedly connected with a housing of the installed air supply device.
13. An air supply device, characterized by comprising a housing (70) and the ventilation assembly of any one of claims 1 to 12, wherein the housing (70) is provided with a ventilation opening (71), and the airflow channel is communicated with the ventilation opening (71).
14. An air supply arrangement according to claim 13, characterised in that the ventilation assembly is extendable from the ventilation opening (71) or retractable into the ventilation opening (71).
15. A ventilation noise reduction control method of a ventilation assembly as claimed in any one of claims 1 to 12, comprising:
the audio acquisition component acquires noise parameters in the airflow channel;
analyzing the collected noise parameters and judging whether the noise parameters meet a noise reduction threshold value;
and if the noise reduction threshold is met, starting the noise reduction part to output noise reduction sound waves so as to weaken noise.
16. The ventilation and noise reduction control method of claim 15, wherein analyzing the collected noise parameters comprises: the amplitude of the frequency bin to be cancelled is determined and the phase of the desired cancellation frequency bin is calculated.
17. The ventilation noise reduction control method according to claim 16, wherein the noise reduction component outputs noise reduction sound waves having the same amplitude as the amplitude of the collected noise and the opposite phase.
18. The ventilation and noise reduction control method of claim 15, wherein before the audio acquisition component acquires the noise parameters in the airflow channel, the method further comprises determining whether the air supply device meets a noise reduction spatial position requirement, and if so, starting the audio acquisition component and the noise reduction component.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615872.3A CN115095913A (en) | 2022-05-31 | 2022-05-31 | Ventilation assembly, air supply device and ventilation noise reduction control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210615872.3A CN115095913A (en) | 2022-05-31 | 2022-05-31 | Ventilation assembly, air supply device and ventilation noise reduction control method |
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