CN114608139A - Method for adjusting length of silencing cavity and air conditioner - Google Patents
Method for adjusting length of silencing cavity and air conditioner Download PDFInfo
- Publication number
- CN114608139A CN114608139A CN202210316602.2A CN202210316602A CN114608139A CN 114608139 A CN114608139 A CN 114608139A CN 202210316602 A CN202210316602 A CN 202210316602A CN 114608139 A CN114608139 A CN 114608139A
- Authority
- CN
- China
- Prior art keywords
- baffle
- noise
- length
- air outlet
- air conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Duct Arrangements (AREA)
Abstract
The application relates to a length adjusting method of a silencing cavity and an air conditioner. The length adjusting method of the silencing cavity comprises the steps of collecting a first noise signal at an air outlet of an air conditioner; determining a target length of the anechoic chamber according to the first noise signal; the silencing cavity is a channel section positioned between the first baffle and the second baffle in the air outlet channel; at least one of the first baffle and the second baffle is controlled to move to adjust the length of the sound-deadening chamber to a target length. According to the length adjusting method of the silencing cavity, the first noise signal at the air outlet of the air conditioner is collected, the target length of the silencing cavity is determined according to the first noise signal, the length of the silencing cavity is adjusted to the target length, so that different noises can be silenced and denoised, the noise at the air outlet of the air conditioner is intelligently denoised, the denoising effect is improved, and the user experience is improved.
Description
Technical Field
The application relates to the field of air purification equipment, in particular to a length adjusting method of a silencing cavity and an air conditioner.
Background
Currently, air conditioners are widely used in various different situations, such as residential buildings, shopping malls, industrial plants, etc., to provide a more comfortable environment. Because reasons such as fan work and air current flow in the air conditioner, can produce great noise at the air outlet department of air conditioner (for example fresh air conditioner's new trend export) companion to influence user's use and experience.
Disclosure of Invention
According to a first aspect of embodiments of the present application, there is provided a method of adjusting a length of a sound-deadening chamber, the method including:
collecting a first noise signal at an air outlet of an air conditioner;
determining a target length of the muffling chamber according to the first noise signal; the silencing cavity is a channel section which is positioned between the first baffle and the second baffle in the air outlet channel;
controlling at least one of the first and second baffles to move to adjust the length of the sound-deadening chamber to the target length.
In some embodiments, said determining a target length of a sound-attenuating chamber from said first noise signal comprises:
determining the noise frequency corresponding to the first noise signal to be eliminated according to the first noise signal;
and determining the effective silencing length corresponding to the noise frequency according to the relation between the target silencing frequency and the effective silencing length of the silencing cavity, and taking the determined effective silencing length as the target length of the silencing cavity.
In some embodiments, the relationship between the target muffling frequency and the effective muffling length of the muffling chamber is:
where f is the target muffling frequency, L is the effective muffling length of the muffling chamber, c is the speed of sound in air, and n is the number of sound waves.
In some embodiments, the determining, according to the first noise signal, a noise frequency corresponding to the first noise signal to be cancelled includes:
determining a section of frequency section corresponding to the noise with the highest noise in the first noise signal according to the first noise signal;
and taking the middle frequency of the noise frequency band or the frequency corresponding to the noise peak value as the noise frequency corresponding to the first noise signal to be eliminated.
In some embodiments, after controlling movement of one of the first and second baffles to adjust the length of the sound-attenuating chamber to the target length, the method further comprises:
acquiring a second noise signal at the outlet end of the air outlet component;
judging whether the noise at the outlet end of the air outlet part is smaller than or equal to a target noise threshold value or not according to the second noise signal; if not, continuing to collect the first noise signal at the air outlet of the air conditioner.
In some embodiments, said controlling at least one of said first and second baffles to move to adjust the length of said sound-attenuating chamber to said target length comprises:
controlling a driving assembly to work so as to drive at least one of the first baffle plate and the second baffle plate to move; wherein the driving component is in driving connection with at least one of the first baffle plate and the second baffle plate.
In some embodiments, the second baffle is disposed at an outlet of the air outlet component, the first baffle is movably disposed, the driving assembly includes a driving motor and a gear drivingly connected to the driving motor, the first baffle is provided with a rack structure capable of cooperating with the gear, and the controlling of one of the first baffle and the second baffle specifically includes:
and controlling the driving motor to drive the gear to rotate so as to drive the rack structure to move, so as to control the first baffle to move.
In some embodiments, the air conditioner air outlet is a fresh air outlet, and the collecting a first noise signal at the air conditioner air outlet includes:
gather the first noise signal of new trend air outlet department.
In some embodiments, the target length of the sound-deadening chamber is re-determined after a change in the fan speed of the air conditioner.
According to a second aspect of embodiments of the present application, there is provided an air conditioner including an indoor unit and an outdoor unit, the indoor unit of the air conditioner including:
a housing having an air conditioning outlet;
the noise reduction device is provided with an air outlet part of an air outlet channel, a first baffle, a second baffle and a first noise collector, the air outlet channel is provided with a first opening end and a second opening end which are opposite, the air outlet pipe is arranged at the air outlet of the air conditioner, so that the first opening end of the air outlet channel is communicated with the air outlet of the air conditioner, and the second opening end is communicated with the outside; the first baffle and the second baffle are both provided with circulation holes, and the first baffle and the second baffle are arranged in the air outlet channel at intervals so as to form a silencing cavity between the first baffle and the second baffle; wherein at least one of the first baffle and the second baffle is movably arranged; the first noise collector is arranged at one end, close to the air outlet of the air conditioner, of the air outlet channel and is used for collecting a first noise signal at the air outlet of the air conditioner;
and the controller is connected with the first noise collector, can determine the target length of the silencing cavity according to the first noise signal and can control at least one of the first baffle plate and the second baffle plate to move so as to adjust the length of the silencing cavity to the target length.
In some embodiments, the noise reduction device includes a driving assembly connected to the controller, the driving assembly being in driving connection with at least one of the first and second baffles, and the controller is capable of controlling the driving assembly to operate to drive the at least one of the first and second baffles to move.
In some embodiments, the second baffle is disposed at the second opening end, the first baffle is movably disposed, the driving assembly includes a driving motor and a gear drivingly connected to the driving motor, the first baffle is provided with a rack structure capable of cooperating with the gear, and the controller is connected to the driving motor and is capable of controlling the driving motor to operate to drive the gear to rotate so as to drive the rack structure to move, so that the first baffle is moved.
In some embodiments, the air conditioner outlet is disposed at a top of the housing; the air outlet part comprises a connecting part connected with the air outlet of the air conditioner and a guide main body arranged at the upper end of the connecting part and extending transversely, and the first baffle and the second baffle are arranged in an air outlet channel inside the guide main body.
In some embodiments, the first baffle plate has a first baffle plate body, the rack structure is fixed to the first baffle plate body, the first baffle plate body is annular, and a flow hole is formed in the middle of the first baffle plate body.
In some embodiments, the first baffle plate main body is provided with a plurality of first through holes arranged on the periphery of the circulation hole; wherein the aperture of the first through hole is smaller than that of the flow through hole;
in some embodiments, the first baffle body extends to a side away from the air-conditioning outlet in a direction toward the circulation hole along an outer edge of the first baffle body.
In some embodiments, in a radial cross section of the first baffle, an angle α between the first baffle and an axis of the first baffle satisfies a condition: alpha is more than or equal to 55 degrees and less than or equal to 65 degrees.
In some embodiments, the second baffle comprises a second baffle body, wherein the second baffle body is structurally identical to the first baffle body.
In some embodiments, the indoor air-conditioning unit is a fresh air indoor air-conditioning unit, and the air-conditioning outlet is a fresh air outlet.
According to the length adjusting method of the silencing cavity, the first noise signal at the air outlet of the air conditioner is collected, the target length of the silencing cavity is determined according to the first noise signal, the length of the silencing cavity is adjusted to the target length, so that different noises can be silenced and reduced, the noise at the air outlet of the air conditioner is intelligently reduced, the noise reduction effect is improved, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a method flow diagram illustrating a method of adjusting a length of a sound-muffling chamber according to an exemplary embodiment of the present application;
FIG. 2 is a method flow diagram illustrating another method of adjusting the length of a sound-damping chamber in accordance with an exemplary embodiment of the present application;
FIG. 3 is a graph illustrating a frequency characteristic of a first noise signal in accordance with an exemplary embodiment of the present application;
FIG. 4 is a graph illustrating frequency characteristics of another first noise signal according to an exemplary embodiment of the present application;
fig. 5 is a schematic structural view of a three-dimensional structure of an indoor unit of an air conditioner according to an exemplary embodiment of the present disclosure;
FIG. 6 is an enlarged schematic view of FIG. 5 at A;
fig. 7 is a schematic cross-sectional view of an indoor unit of an air conditioner according to an exemplary embodiment of the present disclosure;
FIG. 8 is an enlarged schematic view at B of FIG. 7;
fig. 9 is a partially exploded view of an indoor unit of an air conditioner according to an exemplary embodiment of the present application;
FIG. 10 is an enlarged schematic view at C of FIG. 9;
FIG. 11 is a schematic illustration of a sound-muffling chamber having one length, as shown in an exemplary embodiment of the present application;
FIG. 12 is a schematic view of a sound-muffling chamber, shown in an exemplary embodiment of the present application, having another length;
FIG. 13 is a schematic perspective view of a first baffle shown in an exemplary embodiment of the present application;
FIG. 14 is a top view of the first baffle plate shown in FIG. 13;
FIG. 15 is a front view of the first baffle plate shown in FIG. 13;
FIG. 16 is a radial cross-sectional view taken along radial section line D-D of FIG. 15;
FIG. 17 is a schematic perspective view of a second baffle shown in an exemplary embodiment of the present application;
FIG. 18 is a top view of the second baffle plate shown in FIG. 17;
FIG. 19 is a front view of the second baffle plate shown in FIG. 17;
figure 20 is a radial cross-sectional view taken along radial section line E-E of figure 19.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It will be understood that the word "if" as used herein may be interpreted as "at … …" or "at … …" depending on the context.
The application provides a length adjusting method of a silencing cavity. The method comprises the following steps: collecting a first noise signal at an air outlet of an air conditioner; determining a target length of the muffling chamber according to the first noise signal; the silencing cavity is a channel section which is positioned between the first baffle and the second baffle in the air outlet channel; controlling at least one of the first and second baffles to move to adjust the length of the sound-deadening chamber to the target length. According to the length adjusting method of the silencing cavity, the first noise signal at the air outlet of the air conditioner is collected, the target length of the silencing cavity is determined according to the first noise signal, the length of the silencing cavity is adjusted to the target length, so that different noises can be silenced and denoised, the noise at the air outlet of the air conditioner is intelligently denoised, the denoising effect is improved, and the user experience is improved.
Referring to fig. 1, and as necessary in conjunction with fig. 3 to 12, a method for adjusting the length of the muffling chamber will be described in detail.
The length adjusting method of the silencing cavity comprises the following steps S101 to S103:
step S101: collecting a first noise signal at an air outlet of an air conditioner;
step S102: determining a target length of the muffling chamber according to the first noise signal;
step S103: controlling at least one of the first and second baffles to move to adjust the length of the sound-deadening chamber to the target length.
In some embodiments, the air outlet may be the air outlet 101 of an air conditioner indoor unit. The indoor air conditioning unit 100 has a casing 10. The air outlet 101 is opened in the housing 10. The air outlet 101 of the air conditioner is provided with a first signal collector 25 (such as a microphone). In step S101, a first noise signal at the air outlet 101 may be collected by the first signal collector 25.
It should be noted that, in some embodiments, the air-conditioning outlet 101 is a fresh air outlet, and the acquiring a first noise signal at the air-conditioning outlet includes:
gather the first noise signal of new trend air outlet department.
The air outlet 101 of the air conditioner is provided with an air outlet component having an air outlet channel 210, specifically, the air outlet component is an air outlet component 21, the air outlet channel 210 is used for communicating the air outlet 101 with an external space, the air outlet channel 210 is provided with a first baffle and a second baffle having circulation holes, and the silencing cavity 2100 is a channel section between the first baffle 22 and the second baffle 23 in the air outlet channel 210.
In step S102, a target length of the sound-attenuating cavity 2100 may be determined based on the first noise signal. Specifically, the air outlet channel 210 has a first open end 2101 and a second open end 2102 which are opposite to each other, the air outlet component 21 is installed at the air outlet 101, so that the first open end 2101 of the air outlet channel 210 is communicated with the air outlet 101, and the second open end 2102 is communicated with the outside. The second open end 2102 may be understood as an outlet end of the air outlet member 21, or simply an outlet end of the air outlet member.
The external space is understood here to be the space outside the housing 10.
It should be noted that, in some other embodiments, the air outlet component may also be another structure having an air outlet channel and a sound damping cavity formed in the air outlet channel.
In step S103, at least one of the first baffle 22 and the second baffle 23 is controlled to move to adjust the length of the sound-deadening chamber 2100 to the target length.
In some embodiments, a driving assembly 24 can be disposed in the air outlet member 21 and drivingly connected to at least one of the first baffle 22 and the second baffle 23. Step S103 may specifically be implemented by controlling the driving component to operate to drive at least one of the first barrier 22 and the second barrier 23 to move.
In some embodiments, the second baffle 23 is disposed at the outlet 101 of the air-out component, and the first baffle 22 is movably disposed. The driving assembly 24 includes a driving motor and a gear in driving connection with the driving motor. Here, the driving motor may be fixedly installed in the wind discharging part 21, and may be located in the silencing chamber 2100. The first baffle 22 is provided with a rack structure 222 capable of being matched with the gear, and the controlling of one of the first baffle 22 and the second baffle 23 specifically comprises:
the driving motor is controlled to drive the gear to rotate so as to drive the rack structure 222 to move, so as to control the first baffle 22 to move.
In some embodiments, step S102 may be implemented by steps S1201 and S1202 as follows:
step S1201: determining the noise frequency corresponding to the first noise signal to be eliminated according to the first noise signal;
step S1202: and determining the effective silencing length corresponding to the noise frequency according to the relation between the target silencing frequency and the effective silencing length of the silencing cavity, and taking the determined effective silencing length as the target length of the silencing cavity.
In some embodiments, the relationship between the target muffling frequency and the effective muffling length of the muffling chamber is:
where f is the target muffling frequency, L is the effective muffling length of the muffling chamber, c is the speed of sound in air, and n is the number of sound waves. Where c may take 340 m/s.
In some embodiments, step S1021 may be implemented by steps S1211 and S1212 as follows:
step S1211: and determining a section of frequency band corresponding to the noise with the highest noise magnitude in the first noise signal according to the first noise signal.
Specifically, the frequency analysis may be performed on the noise spectrum signal of the first noise signal to obtain a noise frequency band of the first noise, and a frequency band corresponding to a noise with the highest noise level may be determined.
Step S1212: and taking the middle frequency of the noise frequency band or the frequency corresponding to the noise peak value as the noise frequency corresponding to the first noise signal to be eliminated.
Referring to fig. 3, fig. 3 is a frequency characteristic curve of the first noise signal according to an embodiment, where the frequency characteristic curve is obtained by performing a frequency analysis on a noise spectrum signal of the first noise signal. Wherein the abscissa represents the frequency value of the first noise signal and the ordinate represents the noise value of the first noise signal. It can be seen from fig. 3 that the noise value is relatively high for a section of frequencies between the noise frequency a to the noise frequency c, and it can be seen that the noise peak is also in this section. Accordingly, in step S1211, a frequency segment between the noise frequency a and the noise frequency c may be determined as a frequency segment corresponding to the noise having the highest noise level.
As can be seen from fig. 3, a curve of noise values corresponding to a section of frequencies from the noise frequency a to the noise frequency c is relatively stable, and it can be seen that the noise values corresponding to the section of frequencies are relatively close. Accordingly, in step S1212, an intermediate frequency c between the noise frequency a and the noise frequency c may be taken as a noise frequency corresponding to the first noise signal to be eliminated.
Referring to fig. 4, fig. 4 is a frequency characteristic curve of a first noise signal according to another embodiment, where the frequency characteristic curve is obtained by performing a frequency analysis on a noise spectrum signal of the first noise signal. Unlike the embodiment shown in fig. 3, the noise value curve of the embodiment shown in fig. 4 has a significant fluctuation, and the noise value of each frequency is significantly larger than that of other frequencies. For example, the noise frequency e corresponds to a noise value. The noise value is a noise peak value of the first noise signal. Accordingly, in step S1211, a frequency in the vicinity of the noise frequency e (a frequency between the noise frequency d and the noise frequency f) may be determined as a frequency band corresponding to the noise having the highest noise level. Accordingly, in step S1212, the noise frequency e may be taken as the noise frequency corresponding to the first noise signal to be eliminated.
As shown in fig. 2, the present application provides another method of adjusting the length of the muffling chamber. The method for adjusting the length of the sound-deadening chamber is different from the method for adjusting the length of the sound-deadening chamber shown in fig. 1, and after step S103, the method further comprises the following steps S104 and S105:
step S104: acquiring a second noise signal at the outlet end of the air outlet component;
step S105, judging whether the noise at the outlet end of the air outlet part is smaller than or equal to a target noise threshold value or not according to the second noise signal; if not, step S101 is continued to adjust the length of the silencing chamber 2100 to a preferred (or optimal) silencing length, so as to allow the outlet end of the air outlet component to exit.
In particular, a second noise collector 26 (such as a microphone) may be provided at the outlet end of the air outlet member. A second noise signal may be collected by the second noise collector 26. Further, the noise value corresponding to the second noise signal can be obtained according to the analysis of the second noise signal collected by the second noise collector 26, and the relationship between the noise value and the target noise threshold is determined, so as to determine whether the noise value corresponding to the second noise signal is less than or equal to the target noise threshold. The noise threshold may be set to a maximum value of noise level that is acceptable to the average user.
In the use process of the air conditioner, the working modes of the air conditioner are different, the wind speed gear during use, the accuracy of determining the first noise frequency and the like can cause the noise at the outlet end of the air outlet guide pipe to exceed the noise range accepted by a user, and in an air conditioning system, the noise reduction and silencing effect of the silencing cavity can be better improved by adopting the length adjusting method of the silencing cavity shown in figure 2.
Furthermore, in a possible implementation, the method further includes: and after the rotating speed of the fan of the air conditioner is changed, the target length of the sound attenuation cavity is determined again. Therefore, when the length of the current sound-deadening chamber cannot meet the sound-deadening requirement and generates larger noise, the length of the sound-deadening chamber can be adjusted to the target length of the re-determined sound-deadening chamber by the method.
The re-determining of the target length of the sound-deadening chamber may be performed by directly performing step S101, collecting a first noise signal at an air outlet of the air conditioner, and then performing step S102 after the gear or the operating mode of the air conditioner is adjusted.
For the second noise collector 26, after the air conditioner gear is adjusted or the working mode is adjusted, step S104 may be executed to obtain a second noise signal, and step S105 may be further executed to determine that the noise value of the second noise signal is greater than the target noise threshold, and then step S101 and subsequent steps are executed again to implement the second noise collector.
The present application further provides an air conditioning indoor unit, which is described in detail below with reference to fig. 3 to 18.
The indoor unit 100 of the air conditioner includes a casing 10 and a noise reducer 20. The housing 10 has an air conditioning outlet 101. The noise reduction device 20 includes an air outlet component having an air outlet channel 210, a first baffle 22 and a second baffle 23. The air outlet member is specifically configured as an air outlet member 21. The air outlet channel 210 has a first open end 2101 and a second open end 2102 which are opposite, the air outlet guide pipe 21 is installed at the air conditioner air outlet 101, so that the first open end 2101 of the air outlet channel 210 is communicated with the air conditioner air outlet 101, and the second open end 2102 is communicated with the outside; the first baffle 22 and the second baffle 23 are both provided with circulation holes, and the first baffle 22 and the second baffle 23 are arranged in the air outlet channel 210 at intervals so as to form a silencing cavity 2100 between the first baffle 22 and the second baffle 23; wherein at least one of the first and second shutters 22 and 23 is movably disposed to adjust a length of the sound-deadening chamber 2100.
It should be noted that, in some other embodiments, the air outlet component may also be another structure having an air outlet channel and a sound damping cavity formed in the air outlet channel.
The noise reducing means comprises a first noise collector 25. The indoor air conditioner 100 further includes a controller. Wherein the controller is connected with the first noise collector 25. The first noise collector 25 is disposed at the air conditioner outlet 101, and configured to detect a noise signal (hereinafter referred to as a first noise signal) at the air conditioner outlet 101 and transmit the first noise signal to the controller. The controller may determine a target length of the sound-deadening chamber 2100 based on the first noise signal, and control at least one of the first and second baffles 22 and 23 to move such that the length of the sound-deadening chamber 2100 reaches the target length.
A mounting cavity 102 is formed in the housing 10. A fan may be disposed in the mounting cavity 102. The air outlet 101 is communicated with the installation cavity 102 and serves as an outlet of the installation cavity 102.
It should be noted that, in some embodiments, the second open end 2012 may be referred to as the outlet end of the outlet guide pipe.
In some embodiments, the noise reducer 20 includes a driving assembly 24 connected to the controller, the driving assembly 24 being in driving connection with at least one of the first baffle 22 and the second baffle 23, and the controller being capable of controlling the driving assembly to operate to drive the at least one of the first baffle 22 and the second baffle 23 to move. Alternatively, the driving assembly 24 may be disposed in the air outlet guide pipe 21.
In some embodiments, the second baffle 23 is disposed at the second open end 2102, the first baffle 22 is movably disposed, the driving assembly 24 includes a driving motor and a gear drivingly connected to the driving motor, the first baffle 22 is provided with a rack structure 222 capable of cooperating with the gear, and the controller is connected to the driving motor and capable of controlling the driving motor to operate to drive the gear to rotate so as to drive the rack structure 222 to move, so that the first baffle 22 is moved, and the length of the sound-deadening chamber 2100 is adjusted. Here, the driving motor may be fixedly installed at an inner wall of the outlet guide duct 21. Optionally, may be located in sound attenuation chamber 2100.
For example, sound-deadening chamber 2100 depicted in FIG. 11 is adjusted to have a first length L1. Sound-deadening chamber 2100 depicted in fig. 10 is adjusted to have a second length L2. In some embodiments, the first length L1 may be the maximum length of the sound-attenuating chamber. Second length L2 is the minimum length of the sound-deadening chamber.
In some embodiments, the first baffle 22 has a first baffle main body 221, the rack structure 222 is fixed to the first baffle main body 221, the first baffle main body 221 is annular, and a flow through hole 2201 is formed in the middle of the first baffle main body 221 to facilitate the flow of the air flow.
It should be noted that the size of the cross section of the flow hole 2201 is smaller than that of the air outlet channel, so that the noise-accompanied airflow flowing out of the air outlet of the air conditioner can achieve a certain noise reduction effect after entering the noise reduction cavity 2100. When the airflow blows to the second baffle 23, the second baffle 23 reflects part of the airflow accompanied with noise, so that the part of the airflow can form interference with the airflow in the first baffle 22, interference is correspondingly formed between the noise in the two parts of the airflow, and a good noise reduction effect is achieved.
As shown in fig. 13 to 15, the first baffle body 221 is provided with a plurality of through holes 2202 arranged on the periphery of the circulation hole. Wherein the aperture of the through hole 2202 is smaller than that of the flow through hole 2201. Here, the arrangement of the through hole 2202 can contribute to reduction of the wind resistance of the first baffle main body 221 and reduction of the attenuation of the wind volume.
The plurality of through holes 2202 may be uniformly arranged.
In some embodiments, the first baffle body 221 extends to a side away from the air outlet 101 in a direction along an outer edge of the first baffle body 221 toward the flow through hole 2201, so that the first baffle body 221 forms a funnel shape to form a flow guiding surface on a side of the first baffle body 221 close to the air outlet 101, so as to guide the airflow.
The inventors have discovered through research that, in some embodiments, in a radial cross section of the first baffle body 221, an angle α between the first baffle body 221 and an axial direction of the first baffle body 221 satisfies the condition: alpha is more than or equal to 55 degrees and less than or equal to 65 degrees, and the drainage effect of the first baffle main body 221 is better.
As shown in fig. 17 to 20, the second baffle plate 23 includes a second baffle plate main body 231, wherein the second baffle plate main body 231 and the first baffle plate main body 221 have the same structure. For example, the second barrier main body 231 has a flow hole 2301 in the middle thereof. A plurality of through holes 2302 may be arranged around the periphery of the flow holes 2301. The diameter of the through-holes 2302 is smaller than the diameter of the flow-through holes 2301. The second blocking plate body 231 extends to a side away from the air-conditioning outlet 101 in a direction toward the flow hole 2302 along an outer edge of the second blocking plate body 231. In a radial cross section of the second baffle main body 231, an included angle β between the second baffle main body 231 and an axial direction of the second baffle main body 231 satisfies a condition: beta is more than or equal to 55 degrees and less than or equal to 65 degrees, so that one side of the second baffle main body 231 close to the first baffle 22 forms a flow guide surface to guide the airflow to flow.
In some embodiments, the indoor unit 100 is a fresh air indoor unit, and the air outlet 101 is a fresh air outlet.
In some embodiments, the air outlet 101 is disposed at the top of the housing 10. In some embodiments, the noise reduction device 20 further includes a guide tube mounting seat 27, and the outlet air guide tube 21 may be mounted at the air outlet 101 through the guide tube mounting seat 27.
In some embodiments, the outlet guide tube 21 includes a connection portion 212 connected to the air outlet 101, and a guide body 211 disposed at an upper end of the connection portion 212 and extending transversely, and the first baffle 22 and the second baffle 23 are specifically disposed in an outlet channel inside the guide body 211. The first noise collector 25 may be disposed in the connecting portion 212 near the air outlet 101.
Furthermore, the noise reduction device may further comprise a second noise collector 26. The second noise collector 26 is disposed at the second outlet end 2102, and may be disposed on the second baffle 23. The second noise collector 26 is used for collecting a noise signal (hereinafter referred to as a second noise signal) at the second outlet port 2102 to transmit the second noise signal to the controller. The controller can determine whether the noise reduction effect of the noise reduction cavity reaches a preset noise value according to the noise value of the second noise signal, if not, the controller continues to acquire the first noise signal and continues to control one of the first baffle 22 and the second baffle 23 to move so as to achieve a better noise reduction effect.
The length of the sound-deadening chamber 2100 of the air conditioning indoor unit 100 can be adjusted by the above-described method for adjusting the length of the sound-deadening chamber.
The present application further provides an air conditioner. The air conditioner includes an outdoor unit and the indoor unit 100 as described above. The outdoor unit is connected to the indoor unit 100.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (19)
1. A method of adjusting the length of a muffling chamber, said method comprising:
collecting a first noise signal at an air outlet of an air conditioner;
determining a target length of the muffling chamber according to the first noise signal; the silencing cavity is a channel section which is positioned between the first baffle and the second baffle in the air outlet channel;
controlling at least one of the first and second baffles to move to adjust the length of the sound-deadening chamber to the target length.
2. The method of adjusting the length of a sound-muffling chamber according to claim 1, wherein said determining a target length of a sound-muffling chamber according to said first noise signal comprises:
determining the noise frequency corresponding to the first noise signal to be eliminated according to the first noise signal;
and determining the effective silencing length corresponding to the noise frequency according to the relation between the target silencing frequency and the effective silencing length of the silencing cavity, and taking the determined effective silencing length as the target length of the silencing cavity.
3. The method of adjusting the length of a sound-deadening chamber according to claim 2, wherein the relationship between the target sound-deadening frequency and the effective sound-deadening length of the sound-deadening chamber is:
where f is the target muffling frequency, L is the effective muffling length of the muffling chamber, c is the speed of sound in air, and n is the number of sound waves.
4. The method of claim 3, wherein the determining the noise frequency corresponding to the first noise signal to be cancelled according to the first noise signal comprises:
determining a section of frequency section corresponding to the noise with the highest noise in the first noise signal according to the first noise signal;
and taking the middle frequency of the noise frequency band or the frequency corresponding to the noise peak value as the noise frequency corresponding to the first noise signal to be eliminated.
5. The method of adjusting the length of the muffling chamber of claim 1, wherein after controlling the movement of one of the first baffle and the second baffle to adjust the length of the muffling chamber to the target length, the method further comprises:
acquiring a second noise signal at the outlet end of the air outlet component;
judging whether the noise at the outlet end of the air outlet part is less than or equal to a target noise threshold value or not according to the second noise signal; if not, continuing to collect the first noise signal at the air outlet of the air conditioner.
6. The method of adjusting a length of a muffling chamber according to claim 1, wherein the controlling movement of at least one of the first baffle and the second baffle to adjust the length of the muffling chamber to the target length comprises:
controlling a driving assembly to work so as to drive at least one of the first baffle plate and the second baffle plate to move; wherein the driving component is in driving connection with at least one of the first baffle plate and the second baffle plate.
7. The method for adjusting the length of the muffling chamber according to claim 6, wherein the second baffle is disposed at the outlet of the air outlet member, the first baffle is movably disposed, the driving assembly comprises a driving motor and a gear drivingly connected to the driving motor, the first baffle is provided with a rack structure capable of cooperating with the gear, and the controlling of the movement of one of the first baffle and the second baffle specifically comprises:
and controlling the driving motor to drive the gear to rotate so as to drive the rack structure to move, so as to control the first baffle to move.
8. The method for adjusting the length of the muffling chamber according to claim 1, wherein the air-conditioning outlet is a fresh air outlet, and the collecting the first noise signal at the air-conditioning outlet comprises:
gather the first noise signal of new trend air outlet department.
9. The length adjustment method of a muffling chamber according to any one of claims 1 to 8, wherein the target length of the muffling chamber is newly determined after the rotation speed of a fan of an air conditioner is changed.
10. An air conditioner, the air conditioner includes indoor set and off-premises station, its characterized in that, the machine includes in the air conditioner:
a housing having an air conditioning outlet;
the noise reduction device is provided with an air outlet part of an air outlet channel, a first baffle, a second baffle and a first noise collector, the air outlet channel is provided with a first opening end and a second opening end which are opposite, the air outlet pipe is arranged at the air outlet of the air conditioner, so that the first opening end of the air outlet channel is communicated with the air outlet of the air conditioner, and the second opening end is communicated with the outside; the first baffle and the second baffle are both provided with circulation holes, and the first baffle and the second baffle are arranged in the air outlet channel at intervals so as to form a silencing cavity between the first baffle and the second baffle; wherein at least one of the first baffle and the second baffle is movably arranged; the first noise collector is arranged at one end, close to the air outlet of the air conditioner, of the air outlet channel and is used for collecting a first noise signal at the air outlet of the air conditioner;
and the controller is connected with the first noise collector, can determine the target length of the silencing cavity according to the first noise signal and can control at least one of the first baffle and the second baffle to move so as to adjust the length of the silencing cavity to the target length.
11. The air conditioner of claim 10, wherein the noise reducing device includes a drive assembly in driving communication with at least one of the first and second baffles, the controller being configured to control the drive assembly to operate to drive movement of the at least one of the first and second baffles.
12. The air conditioner according to claim 11, wherein the second baffle is disposed at the second opening end, the first baffle is movably disposed, the driving assembly includes a driving motor and a gear in driving connection with the driving motor, the first baffle is provided with a rack structure capable of cooperating with the gear, and the controller is connected to the driving motor and is capable of controlling the driving motor to operate to drive the gear to rotate so as to drive the rack structure to move, so that the first baffle is moved.
13. The air conditioner according to any one of claim 11, wherein the air conditioner outlet is provided at a top of the casing; the air outlet part comprises a connecting part connected with the air outlet of the air conditioner and a guide main body arranged at the upper end of the connecting part and extending transversely, and the first baffle and the second baffle are arranged in an air outlet channel inside the guide main body.
14. The air conditioner of claim 12, wherein the first baffle plate has a first baffle plate body to which the rack gear is fixed, the first baffle plate body having a ring shape, and a flow hole is formed at a middle portion of the first baffle plate body.
15. The air conditioner of claim 14, wherein the first baffle body defines a plurality of first through holes disposed around the periphery of the flow opening; wherein the aperture of the first through hole is smaller than that of the flow through hole.
16. The air conditioner according to claim 14, wherein the first baffle body extends to a side away from the air outlet port in a direction toward the circulating hole along an outer edge of the first baffle body.
17. The air conditioner according to claim 16, wherein in a radial cross section of the first baffle, an angle α between the first baffle and an axis of the first baffle satisfies a condition: alpha is more than or equal to 55 degrees and less than or equal to 65 degrees.
18. The air conditioner according to any one of claims 14 to 17, wherein the second baffle includes a second baffle body, wherein the second baffle body is identical in structure to the first baffle body.
19. The air conditioner according to claim 10, wherein the indoor unit is a fresh air unit, and the air outlet is a fresh air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210316602.2A CN114608139A (en) | 2022-03-28 | 2022-03-28 | Method for adjusting length of silencing cavity and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210316602.2A CN114608139A (en) | 2022-03-28 | 2022-03-28 | Method for adjusting length of silencing cavity and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114608139A true CN114608139A (en) | 2022-06-10 |
Family
ID=81866142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210316602.2A Pending CN114608139A (en) | 2022-03-28 | 2022-03-28 | Method for adjusting length of silencing cavity and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114608139A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86201796U (en) * | 1986-04-02 | 1986-09-17 | 北京燕山石油化工公司前进化工厂 | Throttle silencer with multiple holes |
| KR970070518A (en) * | 1996-04-12 | 1997-11-07 | 김영석 | Noise Reduction Device for Automobile Suction and Exhaust Systems |
| US20010025739A1 (en) * | 2000-03-09 | 2001-10-04 | Woods Woodrow E. | Muffler for marine engine |
| CN207422621U (en) * | 2017-10-10 | 2018-05-29 | Tcl空调器(中山)有限公司 | Air conditioner muffler and air conditioner |
| CN108105519A (en) * | 2018-02-02 | 2018-06-01 | 苏州蓝邦环保科技有限公司 | A kind of Novel noise-reduction pipeline |
| CN109520114A (en) * | 2018-11-12 | 2019-03-26 | 吉林建筑大学 | A kind of silencing apparatus for Heating,Ventilating and Air Conditioning ventilating system |
| CN208778905U (en) * | 2018-08-24 | 2019-04-23 | 无锡市优工精密阀门有限公司 | A kind of centrifugal pump influent stream pipe with noise elimination function |
| CN209370052U (en) * | 2018-10-31 | 2019-09-10 | 珠海凌达压缩机有限公司 | Exhaust noise reduction device and compressor |
| CN110848963A (en) * | 2019-10-30 | 2020-02-28 | 珠海格力电器股份有限公司 | Cavity length-adjustable formula muffler and air conditioner |
| CN214891792U (en) * | 2020-10-20 | 2021-11-26 | Tcl空调器(中山)有限公司 | Silencer and air conditioner with same |
-
2022
- 2022-03-28 CN CN202210316602.2A patent/CN114608139A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86201796U (en) * | 1986-04-02 | 1986-09-17 | 北京燕山石油化工公司前进化工厂 | Throttle silencer with multiple holes |
| KR970070518A (en) * | 1996-04-12 | 1997-11-07 | 김영석 | Noise Reduction Device for Automobile Suction and Exhaust Systems |
| US20010025739A1 (en) * | 2000-03-09 | 2001-10-04 | Woods Woodrow E. | Muffler for marine engine |
| CN207422621U (en) * | 2017-10-10 | 2018-05-29 | Tcl空调器(中山)有限公司 | Air conditioner muffler and air conditioner |
| CN108105519A (en) * | 2018-02-02 | 2018-06-01 | 苏州蓝邦环保科技有限公司 | A kind of Novel noise-reduction pipeline |
| CN208778905U (en) * | 2018-08-24 | 2019-04-23 | 无锡市优工精密阀门有限公司 | A kind of centrifugal pump influent stream pipe with noise elimination function |
| CN209370052U (en) * | 2018-10-31 | 2019-09-10 | 珠海凌达压缩机有限公司 | Exhaust noise reduction device and compressor |
| CN109520114A (en) * | 2018-11-12 | 2019-03-26 | 吉林建筑大学 | A kind of silencing apparatus for Heating,Ventilating and Air Conditioning ventilating system |
| CN110848963A (en) * | 2019-10-30 | 2020-02-28 | 珠海格力电器股份有限公司 | Cavity length-adjustable formula muffler and air conditioner |
| CN214891792U (en) * | 2020-10-20 | 2021-11-26 | Tcl空调器(中山)有限公司 | Silencer and air conditioner with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2378133A2 (en) | Methods and systems for active sound attenuation in an air handling unit | |
| CN109268938B (en) | Air conditioner, control method thereof and storage medium | |
| CN202187960U (en) | Impedance acoustic streaming blower muffler | |
| CN114608139A (en) | Method for adjusting length of silencing cavity and air conditioner | |
| CN217635891U (en) | Machine and air conditioner in air conditioning | |
| CN215446719U (en) | Building heating ventilation air conditioning equipment | |
| CN115013343B (en) | Method for identifying abnormal sound frequency of impeller of centrifugal fan and abnormal sound control method | |
| CN214370886U (en) | Fresh air conditioner | |
| CN215112939U (en) | Air conditioner indoor unit and air conditioning system | |
| CN210220039U (en) | Amortization formula connecting pipe and air conditioner | |
| CN112240582B (en) | Fan, range hood and noise reduction method of fan | |
| JP3096577B2 (en) | Ventilation openings for buildings | |
| CN112228680A (en) | Silencing and flow guiding device | |
| CN211781878U (en) | Air conditioner fan pipeline silencer | |
| CN221005448U (en) | Muffler and air conditioner | |
| CN213578233U (en) | Filtering muffler and air conditioner | |
| CN206708023U (en) | A kind of structure for reducing rotary compressor noise | |
| CN114132147B (en) | Limited space noise-reducing air inlet shell | |
| CN213578231U (en) | Filtering muffler and air conditioner | |
| CN220852556U (en) | Sound deadening structure, compressor and air conditioner with same | |
| CN217654090U (en) | Composite perforated silencer | |
| CN218096222U (en) | Air duct machine and silencer thereof | |
| CN213542823U (en) | Silencer and air conditioner | |
| CN219733728U (en) | Fan blade and air conditioner | |
| CN220453812U (en) | Filter screen assembly and fresh air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |