CN114857713A - Window formula sound insulation of multiple noise elimination purifies new trend ware - Google Patents
Window formula sound insulation of multiple noise elimination purifies new trend ware Download PDFInfo
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- 230000008030 elimination Effects 0.000 title claims abstract description 24
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 24
- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 230000030279 gene silencing Effects 0.000 claims abstract description 55
- 238000000746 purification Methods 0.000 claims abstract description 12
- 230000009467 reduction Effects 0.000 claims description 41
- 239000007789 gas Substances 0.000 claims description 37
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- -1 oxygen ion Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000004887 air purification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000002386 air freshener Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 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
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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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- 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)
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- General Engineering & Computer Science (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a multi-silencing window type sound insulation purification fresh air device which comprises a shell module and a panel module arranged on one side of the shell module, wherein a sealed channel is formed inside the shell module, an air inlet is formed in the side, away from the panel module, of the shell module, an air outlet is formed in the panel module, a plurality of independent cavities are formed inside the shell module, a fan module, a silencing module and a silencing and flow guiding module are sequentially arranged between the air inlet and the air outlet, the fan module, the silencing module and the silencing and flow guiding module are located in the independent cavities, the sectional area of a channel in the silencing module is larger than that of a channel in the fan module, the sectional area of a channel in the silencing and flow guiding module is larger than that of a channel in the silencing module, and one end of the silencing and flow guiding module is communicated with the air outlet. The invention has the beneficial effects that: the noise generated outside the window and during the operation of the invention is subjected to noise elimination treatment when the noise enters the window along with the airflow.
Description
Technical Field
The invention relates to the field of window type air fresheners, in particular to a window type sound insulation purifying air fresher with multiple muffling functions.
Background
The window type ventilator is used as a fresh air product in the market and is popularized in recent years. Various types of air purification devices are known for urban air quality problems. Common air purifier is the air inner loop in mostly the window, can not introduce the new trend outside the window. A large number of pipelines need to be arranged in advance for the fresh air machine in the distributed window, and the distributed window is suitable for installation before decoration. The window type fresh air device can be installed together with a window, complex pipelines do not need to be arranged, the installation is simple, fresh air outside the window can be continuously introduced, and the air quality inside the window is improved.
The conventional window type purification fresh air device emphasizes the fresh air function, and the structural design is simpler. When the window type purifying ventilator is used, noise generated by the operation of the window type purifying ventilator outside the window enters the window along with wind flow, so that a user is in a noisy environment in daily life, and great trouble is caused to the user.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multi-silencing window type sound insulation and purification ventilator, which is used for silencing noise generated outside a window and during the operation of the invention when the noise enters the window along with airflow.
The purpose of the invention is realized by the following technical scheme: the utility model provides a window formula sound insulation of multiple noise elimination purifies fresh air ware, includes the shell module, sets up in the panel module of shell module one side, the inside sealed passageway that forms of shell module, the shell module is kept away from panel module one side and is provided with the air intake, the air outlet has been seted up to the panel module, the inside a plurality of independent cavitys that are provided with of shell module, set gradually between air intake and the air outlet be located the fan module of independent cavity, adopt noise elimination module, the noise elimination water conservancy diversion module that sound absorbing material made, the interior channel sectional area of noise elimination module is greater than fan module passageway sectional area, the interior channel sectional area of noise elimination water conservancy diversion module is greater than the interior channel sectional area of noise elimination module, noise elimination water conservancy diversion module one end and air outlet UNICOM.
The fan module works, the air outside the window enters from the air inlet and sequentially passes through the fan module, the silencing module and the silencing flow guide module, the air is discharged into the window from the air outlet, the noise generated by the noise outside the window and the working of the fan module can pass through the silencing module along with the air, the air expands due to the fact that the sectional area of a channel in the silencing module is increased, the sound carried by the air is reduced for the first time, the sound carried by the air can be absorbed by the silencing module to be reduced for the second time when the air passes through the channel in the silencing module, the sound carried by the air can be absorbed by the silencing flow guide module to be reduced for the third time when the air passes through the silencing flow guide module, the sectional area of the channel in the silencing flow guide module is increased again, the air expands, and the sound carried by the air is reduced for the fourth time.
An air inlet shell is arranged on one side, away from the panel module, of the shell module, a vent is formed in the air inlet shell, and the horizontal plane where the vent is located below the horizontal plane where the air inlet is located. When raining outside the window, the air inlet shell protects the air inlet, and the vent is located below the air inlet, so that rainwater cannot enter the window through the air inlet shell.
The fan module comprises a body, a centrifugal fan and a negative oxygen ion generator are arranged in the body, a first airflow port is formed in one side of the body, a second airflow port is formed in the other side of the body, and an airflow port baffle is slidably mounted on the first airflow port. The negative oxygen ion generator generates negative oxygen ions which enter the window along with the gas, so that the content of the negative oxygen ions in the air is improved. When the air-tightness test device stops running, the first air flow port is isolated through the sliding air flow port baffle plate, and the air tightness of the air-tightness test device when the air-tightness test device stops running is improved.
The window type sound insulation purification fresh air device with multiple muffling also comprises a filter element module positioned in the independent cavity, wherein the filter element module comprises a coarse filter element and a high-efficiency composite filter element. The coarse filter element is a stainless steel wire mesh with 30 meshes, and the high-efficiency composite filter element is a composite filter element containing active carbon, so as to filter 99.9% of PM2.5 particles in the gas and remove peculiar smell and the like in the gas.
The window type sound insulation purifying fresh air device with multiple muffling also comprises an auxiliary heating module positioned between the air outlet and the muffling diversion module. The temperature regulating device is used for regulating the temperature of air entering the window when the temperature is lower, and the overall comfort is improved.
And the panel module is provided with a display screen. Corresponding detectors are respectively installed outside the window in the window, the detectors are electrically connected with the display screen, and the display screen can display air humidity numerical values, sound decibel numerical values, temperature numerical values, air purification numerical values and the like outside the window in the window.
The utility model discloses a sound detection device, including air inlet, air outlet, first sound wave detector, second sound wave detector and first treater, air inlet department is provided with the first sound wave detector that is used for detecting the outer actual sound decibel volume of window, air outlet department is provided with the second sound wave detector that is used for detecting the interior actual sound decibel volume of window, first sound wave detector, second sound wave detector link to each other with the first treater that is used for drawing the sound wave range and converts digital signal into, first treater links to each other with the display screen electrical property. Thereby, the sound decibel quantity outside and inside the window is displayed on the display screen.
The first sound wave detector is also electrically connected with a second processor which is used for extracting sound wave amplitude, converting the sound wave amplitude into a digital signal and calculating a theoretical noise reduction value, and the second processor adopts a formula of
And the second processor is electrically connected with the display screen.
The magnitude of the out-of-window sound decibel amount detected by the first acoustic wave detector,
the theoretical sound decibel magnitude in the window,
the decibel amount of sound generated by the fan module,
is the sound absorption coefficient of the sound elimination module, L is the length of the internal channel of the sound elimination module,
in order to obtain the radius of the section of the internal channel of the silencing module,
in order to eliminate the noise and guide the radius of the section of the channel in the module,
the sound absorption coefficient of the silencing and flow guiding module 9 is shown, D is the distance of the gas passing through the silencing and flow guiding module 9, and Q is the sound expansion coefficient. And the second processor receives the signal of the first sound wave detector, calculates the theoretical sound decibel quantity in the window through a formula, and displays the calculated theoretical sound decibel quantity in the window on a display screen. The display screen also displays the decibel amount in the actual window. When the quality of the same batch of fresh air devices with the same specification and model is inspected, the section radius of the internal channel of the silencing module, the section radius of the internal channel of the silencing and guiding module, the length of the internal channel of the silencing and guiding module, the decibel value of sound generated by the fan module and the length of the internal channel of the silencing module in different specifications and models are different, and the batch of fresh air devices with the specification and model is input
、
、L、
And D, sending a sound source outside the window, calculating the theoretical decibel value in the window by the second processor, and when the decibel value in the actual window is larger than the error range allowed by the decibel value in the theoretical window, indicating that the noise reduction system cannot normally eliminate the noise of the gas, and if the noise reduction system has a problem and is unqualified in quality inspection, otherwise, indicating that the noise reduction system can normally eliminate the noise of the gas.
By adopting the algorithm, when the fresh air devices are subjected to batch factory inspection, only a uniform test noise source needs to be provided in a test field, and even if the positions of the fresh air devices to be tested are different, the received sound decibels outside the window are different, the quality inspection conclusion of the fresh air devices is not completely influenced.
During the use process of the user, one-key aging investigation can be provided for the userFunction, after using the function, in the second process
、 
、L、 
D is a corresponding parameter stored when the quality inspection is qualified, the user keeps the indoor mute, the first sound wave detector transmits a decibel component value of sound outside the window obtained through detection to the second processor, when the second sound wave detector detects that the decibel component in the actual window is greater than 0, the second processor carries out calculation to obtain a decibel component value in the theoretical window, the second processor compares and judges the decibel component value in the theoretical window with the decibel component value in the actual window, when the decibel component value in the actual window exceeds the decibel component value in the theoretical window by 110%, the noise reduction system is judged to be aged, and the LED lamp arranged on the shell module emits red light to remind the user.
The window type sound insulation purifying fresh air device with multiple muffling also comprises an active noise reduction module positioned between the muffling module and the muffling diversion module, wherein a sound wave sensor is arranged at one end, close to the muffling module, of a channel in the active noise reduction module, the output end of the sound wave sensor is connected with the input end of a phase shifter, the output end of the phase shifter is connected with the input end of an A/D converter, the output end of the A/D converter is connected with the input end of a power carrier, the output end of the power carrier is connected with the input end of a frequency modulator, and the output end of the frequency modulator is connected with a sound source arranged at one end, close to the muffling diversion module, of the channel in the active noise reduction module. When the volume outside the window is subjected to noise elimination and then transmitted into the window or has a very large decibel value, a user can start the automatic noise reduction module, and the sound wave sensor transmits signals after receiving sound waves carrying sound in gas, so that a sound source generates sound waves completely opposite to the sound outside the window, and the sound outside the window is subjected to reverse phase noise reduction.
The invention has the beneficial effects that:
(1) the sound attenuation module and the sound attenuation and flow guide module are arranged to carry out four times of sound attenuation treatment on sound waves carried in gas, so that the volume carried by the gas is greatly reduced, the sound insulation effect of the invention is improved, a user is not disturbed by noise, and great experience is brought to the user.
(2) The air inlet is protected by arranging the air inlet shell, so that rainwater cannot enter the window through the air inlet.
(3) The air tightness of the invention when the fan stops running is increased by arranging the slidable airflow port baffle in the fan module.
(4) Through set up the display screen on the panel, can show air humidity numerical value, sound decibel numerical value, temperature numerical value and air purification numerical value etc. outside the window.
(5) When a manufacturer produces the noise reduction ventilator to carry out noise reduction quality inspection, in the prior art, an operator is located in a window, a sound source outside the window makes a sound, and the operator in the window judges whether the noise reduction effect of the ventilator reaches the standard through personal experience. The method has the problems that firstly, an operator can only judge the noise reduction effect of one fresh air device at a time, the efficiency is too low, secondly, whether the noise reduction effect of the fresh air device reaches the standard or not is judged through experience of the operator, great personal subjective factor influence exists, the noise reduction effect of the fresh air device can be judged without a universal standard, the judgment error condition is extremely easy to occur, and products with noise reduction problems flow into the market. Through setting up second processor module to and be located the first sound wave detector and the second sound wave detector outside the window interior window, can realize that the sound source sends once, carry out quality control to the fresh air ware of same batch same specification model, improved quality control efficiency greatly, and can also clear and definite learn the interior decibel value of window after theoretical falling the noise and actually fall the interior decibel value of window after making an uproar and show on the display screen, can be visual directly perceived the judgement out each fresh air ware can be normal carry out the noise elimination.
(6) Through setting up the initiative noise reduction module, still produce very big noise puzzlement to the user in the window after the sound that gas carried through quadruple noise elimination, the module of making an uproar falls in the operation initiative, and the sound of carrying in the gas is carried out the anti-phase and is fallen the noise.
Drawings
FIG. 1 is an exploded view of example 1 of the present invention;
FIG. 2 is a schematic view of a housing module connection;
FIG. 3 is a perspective view of a fan module;
FIG. 4 is a schematic view of a centrifugal fan connection;
FIG. 5 is a schematic view of a stepper motor connection;
FIG. 6 is a schematic view of the muffler module connection;
FIG. 7 is a circuit diagram according to embodiment 2 of the present invention;
FIG. 8 is a schematic structural diagram of an active noise reduction module;
FIG. 9 is a circuit diagram of an active noise reduction module;
in the figure, 1-a housing module, 101-an air inlet housing, 102-an air vent, 2-a panel module, 3-a sound insulation module, 4-an air inlet, 5-an air outlet, 6-an independent cavity, 7-a fan module, 701-a body, 702-a centrifugal fan, 703-a negative oxygen ion generator, 704-a first air flow port, 705-a second air flow port, 706-an air flow port baffle, 707-a rack groove, 708-a gear, 709-a chute, 710-a stepping motor, 8-a sound elimination module, 9-a sound elimination diversion module, 10-a coarse-effect filter element, 11-a high-efficiency composite filter element, 12-an auxiliary heat module, 13-a display screen, 14-an active noise reduction module, 1401-an acoustic sensor, 1402-a sound source.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the following description, the terms "left", "right", "upper", "lower", "front", "rear", "inner" and "outer" are relative to each other, and are not listed here.
The utility model provides a window formula sound insulation of multiple noise elimination purifies fresh air ware, refers to fig. 1, includes shell module 1 and panel module 2, and panel module 2 sets up in shell module 1 one side, and shell module 1 is provided with air intake 4 on keeping away from panel module 2 one side, is provided with air outlet 5 on the panel module 2. A plurality of independent cavities 6 are arranged in the shell module, and a coarse filter element 10, a high-efficiency composite filter element 11, a fan module 7, a silencing module 8 and a silencing and flow guiding module 9 are sequentially arranged in the independent cavities 6. An auxiliary heating module 12 is arranged at the outlet of the channel in the silencing and flow guiding module 9. The sound insulation modules 3 are arranged on the side walls of the silencing module 8 and the silencing guide module 9.
Referring to fig. 2, the side of the housing module 1 remote from the panel module 2 is provided with an air intake housing 101. The air inlet housing is provided with a vent 102 at the lower part, and the air inlet 4 is positioned above one side of the housing module 1 far away from the panel module 2. When the window is rainy, the air inlet casing 101 shields the air inlet 4, so that rainwater cannot enter the window through the air inlet 4.
Referring to fig. 3, 4 and 5, the blower module 7 includes a body 701, and a centrifugal blower 702 and an oxygen anion generator 703 are disposed in the body 701. The body 701 is provided with a first air flow port 704 at one side thereof, and a second air flow port 705 at the other side thereof. Two ends of one side of the body 701 are provided with sliding grooves 709, and the sliding grooves 709 are provided with airflow port baffles 706 in a sliding manner. The airflow port baffle 707 is provided with a rack groove, a gear 708 is rotatably arranged on one side of the body 701, and the gear 708 is meshed with the rack groove 707. A stepping motor 710 for driving the gear to rotate is further provided in the body 1.
Referring to fig. 6, the sectional area of the inner channel of the silencing module 8 is larger than that of the inner channel of the fan module 7 and smaller than that of the inner channel of the silencing guide module 9. The silencing module 8 is made of sound-absorbing materials, and when gas passes through the internal channel of the silencing module 8, the sound in the gas can be absorbed.
The centrifugal fan 702 operates, and gas outside the window enters from the vent 102, enters the shell module 1 from the air inlet 4, sequentially passes through the coarse filter element 10, the high-efficiency composite filter element 11, the fan module 7, the noise elimination module 8 and the noise elimination guide module 9, and is discharged into a room from the air outlet 5 after the auxiliary heating module 12. When the gas passes through the coarse filter element 10 and the high-efficiency composite filter element 11, the gas is filtered, and PM2.5 particles and gas peculiar smell in the gas are removed. When the gas enters the silencing module 8 from the fan module 7, the sectional area of the channel in the silencing module 8 is increased, the gas expands, and the sound carried by the gas is reduced for the first time; because the silencing module 8 is supported by sound-absorbing materials, when gas passes through the internal channel of the silencing module 8, sound carried by the gas is absorbed by the silencing module 8 to generate secondary reduction; when the gas passes through the silencing and guiding module 9, the sound carried by the gas is absorbed by the silencing and guiding module 9 to generate third reduction, and when the gas passes through the silencing and guiding module 9, the sectional area of the channel in the silencing and guiding module 9 is increased again, so that the gas is expanded, and the sound carried by the gas generates fourth reduction. When the gas passes through the auxiliary heating module 12, the auxiliary heating module 12 can adjust the temperature of the gas when the temperature is lower, and the overall comfort is improved.
The novel further improvement of the experiment can be further extended according to the above-mentioned cases, and various novel examples are provided.
As a second embodiment of the present invention, on the basis of embodiment 1, referring to fig. 7, a display 13 is disposed on the panel module 2, a first acoustic detector for detecting acoustic waves outside the window is disposed at the air inlet 4, and a second acoustic detector for detecting acoustic waves inside the window is disposed at the air outlet 5. The first sound wave detector and the second sound wave detector are electrically connected with the first processor. The first processor is used for extracting the sound wave amplitude of the received sound wave and converting the sound wave into a digital signal. The first sound wave detector is also electrically connected with a second processor, and the second processor is used for extracting sound wave amplitude from the received sound waves, converting the sound wave amplitude into a digital signal and enabling the digital signal to pass through the formula
And calculating a theoretical noise reduction value. The first processor and the second processor are electrically connected with the display screen 13. The first processor displays decibels of sounds detected by the first acoustic wave detector and the second acoustic wave detector on the display screen 13. In the formula
The magnitude of the out-of-window sound decibel amount detected by the first acoustic wave detector,
is the decibel magnitude of the sound in the window,
the sound decibel quantity generated by the fan module 7,
is the sound absorption coefficient of the noise elimination module 8, L is the length of the internal channel of the noise elimination module 8,
in order to obtain a radius of the section of the internal channel of the silencing module 8,
in order to eliminate the noise and guide the radius of the section of the channel in the module 9,
the sound absorption coefficient of the silencing and flow guiding module 9 is shown, D is the distance of the gas passing through the silencing and flow guiding module 9, and Q is the sound expansion coefficient. When quality inspection link is carried out on the same batch of the same-model ventilators, the specification model of the batch is input to the second processor
、 
、L、
And D, sending a sound source outside the window, calculating the theoretical decibel value in the window by the second processor, transmitting the theoretical decibel value to the display screen 13 for display, and displaying the actual decibel value in the window on the display screen 13. When the decibel value in the actual window exceeds the error range allowed by the decibel value in the theoretical window, the invention is shown to be incapable of normally silencing gas, and the noise reduction system of the fresh air device does not reach the standard, otherwise, the invention is shown to be capable of normally silencing gas, and the noise reduction system of the fresh air device reaches the standardAnd (4) marking.
As a third embodiment of the present invention, referring to fig. 8 and 9, on the basis of embodiment 2, an active noise reduction module 14 located between the sound attenuation module 8 and the sound attenuation and flow guide module 9 is further included. An acoustic wave sensor 1401 is arranged at one end, close to the silencing module 8, of the channel in the active noise reduction module 14, the output end of the acoustic wave sensor 1301 is connected with the input end of a phase shifter, the output end of the phase shifter is connected with the input end of an A/D converter, the output end of the A/D converter is connected with the input end of a power carrier, the output end of the power carrier is connected with the input end of a frequency modulator, and the output end of the frequency modulator is connected with a sound source 1402 arranged at one end, close to the silencing and flow guiding module 9, of the channel in the active noise reduction module 14. When the volume outside the window is silenced and then transmitted into the window or has a very large decibel value, a user can start the automatic noise reduction module 14, the sound wave sensor 1401 receives the sound wave carried in the gas and transmits the signal to the phase shifter, the phase shifter performs 180-degree phase shifting on the signal to obtain a reversed-phase electric wave, the reversed-phase electric wave is transmitted to the A/D converter, the A/D converter converts the reversed-phase electric wave into a digital signal and transmits the digital signal to a power carrier, the power carrier transmits the signal to the frequency modulator, and the frequency modulator transmits the signal to the sound source 1402, so that the sound source 1402 generates sound completely opposite to the sound in the gas, and the reversed-phase noise reduction is performed on the sound carried in the gas.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The window type sound insulation purification fresh air device with multiple muffling is characterized by comprising a shell module (1) and a panel module (2) arranged on one side of the shell module, wherein a sealed channel is formed inside the shell module (1), an air inlet (4) is formed in one side, away from the panel module (2), of the shell module (1), an air outlet (5) is formed in the panel module (2), a plurality of independent cavities (6) are arranged inside the shell module (1), a fan module (7) located in each independent cavity (6), a muffling module (8) made of sound absorbing materials and a muffling flow guide module (9) are sequentially arranged between the air inlet (4) and the air outlet (5), the sectional area of an inner channel of the muffling module (8) is larger than that of the fan module (7), the sectional area of the inner channel of the muffling flow guide module (9) is larger than that of the muffling module (8), one end of the silencing and flow guiding module (9) is communicated with the air outlet (5).
2. The multiple muffling window type sound insulation purification ventilator as recited in claim 1, wherein: an air inlet shell (101) is arranged on one side, away from the panel module (2), of the shell module (1), a ventilation opening (102) is formed in the air inlet shell (101), and the horizontal plane where the ventilation opening (102) is located below the horizontal plane where the air inlet (4) is located.
3. The multi-muffling window type sound insulation purifying ventilator according to claim 1, wherein: the fan module (7) comprises a body (701), a centrifugal fan (702) and a negative oxygen ion generator (703) are arranged in the body (701), a first airflow port (704) is arranged on one side of the body (701), a second airflow port (705) is arranged on the other side of the body (701), and an airflow port baffle (706) is slidably mounted on the first airflow port (701).
4. The multiple muffling window type sound insulation purification ventilator as recited in claim 1, wherein: the filter element module is positioned in the independent cavity (6) and is of a double-filtering structure.
5. The multiple muffling window type sound insulation purification ventilator as recited in claim 1, wherein: the auxiliary heating module (12) is positioned between the air outlet (5) and the silencing and flow guiding module (9).
6. The multiple muffling window type sound insulation purification ventilator as recited in claim 1, wherein: and a display screen (13) is arranged on the panel module (2).
7. The multiple muffling window type sound insulation purification ventilator as recited in claim 6, wherein: air intake (4) department is provided with first acoustic detector, air outlet (5) department is provided with second acoustic detector, first acoustic detector, second acoustic detector link to each other with the first treater that is used for drawing the sound wave range and converts digital signal to, first treater links to each other with display screen (13) electrical property.
8. The multiple muffling window type sound insulation purification ventilator as recited in claim 7, wherein: the first sound wave detector is also electrically connected with a second processor which is used for extracting sound wave amplitude, converting the sound wave amplitude into a digital signal and calculating a theoretical noise reduction value, the second processor is electrically connected with a display screen (13), and the calculation of sound decibel quantity in a theoretical window adopts a formula of
Wherein
Is the decibel magnitude of the sound outside the window,
to be the magnitude of the decibel magnitude of sound within the theoretical window,
the sound decibel value generated by the fan module (7),
for absorbing sound by the sound-deadening module (8)The coefficient L is the length of the internal channel of the noise elimination module (8),
the radius of the section of the internal channel of the noise elimination module (8),
the radius of the section of the inner channel of the silencing and flow guiding module (9),
the sound absorption coefficient of the silencing and guiding module 9 is obtained by calculation, D is the distance of the gas passing through the silencing and guiding module 9, and Q is the sound expansion coefficient
The numerical value and the detection result of the second sound wave detector are displayed on a display screen (13).
9. The multiple muffling window type sound insulation purification ventilator as recited in claim 1, wherein: the noise reduction device is characterized by further comprising an active noise reduction module (14) located between the noise reduction module (8) and the noise reduction diversion module (9), wherein a sound wave sensor (1401) is arranged at one end, close to the noise reduction module (8), of an inner channel of the active noise reduction module (14), the output end of the sound wave sensor (1401) is connected with the input end of a phase shifter, the output end of the phase shifter is connected with the input end of an A/D converter, the output end of the A/D converter is connected with a power carrier input end, the power carrier output end is connected with the input end of a frequency modulator, and the output end of the frequency modulator is connected with a sound source (1402) arranged at one end, close to the noise reduction diversion module (9), of the inner channel of the active noise reduction module (14).
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