CN112344525A - Air pipe type air conditioner indoor unit - Google Patents

Air pipe type air conditioner indoor unit Download PDF

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Publication number
CN112344525A
CN112344525A CN202011184186.2A CN202011184186A CN112344525A CN 112344525 A CN112344525 A CN 112344525A CN 202011184186 A CN202011184186 A CN 202011184186A CN 112344525 A CN112344525 A CN 112344525A
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CN
China
Prior art keywords
noise reduction
fan
active noise
indoor unit
controller
Prior art date
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Pending
Application number
CN202011184186.2A
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Chinese (zh)
Inventor
李怀成
华如文
徐鹏洋
殷豪杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Original Assignee
Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Application filed by Qingdao Hisense Hitachi Air Conditioning System Co Ltd filed Critical Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority to CN202011184186.2A priority Critical patent/CN112344525A/en
Publication of CN112344525A publication Critical patent/CN112344525A/en
Pending legal-status Critical Current

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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
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The invention discloses an air duct type air conditioner indoor unit.A fan provides power for the air flow in the indoor unit, and an active noise reduction component can generate noise reduction sound waves with the phase opposite to that of external noise so as to achieve the noise reduction effect. The method correlates the start and stop of the fan with the start and stop of the active noise reduction assembly, and particularly, when the fan stops, the active noise reduction assembly synchronously stops; when the fan is started, the active noise reduction assembly is started after the delay time T, so that the noise reduction effect and the stability of the active noise reduction assembly are improved.

Description

Air pipe type air conditioner indoor unit
Technical Field
The invention relates to the technical field of air conditioner adjusting equipment, in particular to an air duct type air conditioner indoor unit.
Background
The air duct type air conditioner comprises an indoor unit and an outdoor unit, wherein the indoor unit is connected with the outdoor unit through a pipeline. Compared with the traditional central air conditioner, the air conditioning effect of the air duct type air conditioner is almost the same as that of the central air conditioner, but the air duct type air conditioner is cheaper and is installed in a hidden way, so that the air duct type air conditioner is favored by more and more consumers in recent years.
In order to improve the comfort of users, the reduction of noise generated during the operation of the indoor unit of the duct type air conditioner is a problem that those skilled in the art have been studying. In the prior art, a theoretical research for applying an active noise reduction technology to an air conditioner is available. The active noise reduction technology generates noise reduction sound waves with phases opposite to those of external noise through an active noise reduction system, so that the energy of the noise is neutralized, and the effect of reducing the noise is achieved.
The active noise reduction system mainly comprises a noise acquisition device, a sound production device and a controller, and the noise reduction principle is as follows: the noise acquisition device acquires a sound signal and sends the sound signal to the controller; the controller analyzes and calculates the received sound signal to obtain a control signal with equal amplitude and opposite phase with the noise signal, and the generated control signal is sent to the sound generating device; the sound generating device generates an inverted signal having the same frequency as the noise signal and an opposite phase to the noise signal on the noise transmission path according to the received control signal. The inverted signal and the noise signal are offset, so that the noise signal transmitted to the human ear is effectively reduced, and the noise reduction effect is realized. The noise collecting device generally adopts a microphone, and the sound generating device generally adopts a loudspeaker.
The air conditioner generates a lot of noises during normal operation, wherein the main noise is airflow noise caused by a fan, and the noises are broadband noises, and the active noise reduction technology is suitable for eliminating the noises. The active noise reduction system collects noise data in real time through a microphone, the controller carries out operation processing on noise signals, a loudspeaker is used for playing reversed-phase secondary sound waves, and the secondary sound waves are overlapped with a primary sound source to achieve the purpose of offsetting noise.
When the active noise reduction system is applied to an air conditioner, as long as the active noise reduction assembly is started, the electroacoustic device on the active noise reduction assembly can work all the time, the microphone can collect any noise transmitted to the position of the microphone, and finally the loudspeaker can play the collected noise in a reversed phase mode. When the air conditioner is operated, the noise of the air conditioner, particularly the wind noise belongs to near-field noise for the active noise reduction system, and compared with other noise inside/outside a room, such as human speaking voice, operation voice of other household appliances, and automobile noise outside the room, which are far away from the air conditioner, the noise belongs to far-field noise, and the near-field noise has much larger energy than far-field noise, so that when the air conditioner is operated, the reverse far-field noise played by the active noise reduction system can be masked by the near-field noise (masking effect), and human ears cannot feel the influence of the far-field noise. If the air conditioner fan does not operate, the noise of the air conditioner is low, the microphone can only collect far-field noise (also called as environmental background noise), and the far-field noise is finally played by the loudspeaker, and the actual laboratory verification shows that: when the air conditioner is not operating and the active noise reduction system is operating, the speaker may emit a small sound, which is mainly far-field noise/background noise, which may be perceived by the human ear, resulting in a poor user experience.
In addition, when the air conditioner is normally operated, the indoor unit is not always continuously operated, and a phenomenon of temporary fan occurs according to the state of the outdoor unit. For example, when the outdoor unit is in a heating defrosting state, the indoor unit may be temporarily operated, generally, the pause time is about 5 minutes, and then the outdoor unit is normally operated; for another example, when the indoor temperature reaches the set temperature, both the outdoor unit and the indoor unit stop operating.
In addition, in the initial stage of starting the fan, the rotating speed of the fan is gradually increased until the rotating speed corresponding to the set wind gear is reached. When the fan is just started to operate at low speed, the fan is characterized in that the rotating speed is low, the vibration amplitude caused by rotation is high, the motor is connected with the air conditioner shell through the rotating shaft and the bearing, vibration can be transmitted to the whole air conditioner, the sensitivity of the active noise reduction system to vibration is high, and the stability of the active noise reduction system can be influenced when the motor operates at low speed.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
In order to solve the problems pointed out in the background art, the invention provides an air duct type air conditioner indoor unit, which correlates the starting and stopping of a fan with the starting and stopping of an active noise reduction assembly so as to improve the noise reduction effect and the stability of the active noise reduction assembly.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
in some embodiments of the present application, an air duct type air conditioner indoor unit is provided, including:
a fan that powers the flow of gas within the indoor unit;
an active noise reduction component capable of generating noise reduction sound waves in a phase opposite to that of external noise;
when the fan stops, the active noise reduction assembly stops synchronously; when the fan is started, the active noise reduction assembly is started after the delay time T.
In some embodiments of the present application, the indoor unit further includes a main control board, which is respectively in communication with the fan and the active noise reduction assembly, and controls the operation of the active noise reduction assembly according to the operating condition of the fan;
when the fan stops, the main control board controls the active noise reduction assembly to synchronously stop; when the fan is started, the main control board controls the active noise reduction assembly to be started after the delay time T.
In some embodiments of this application, the subassembly of making an uproar falls in the initiative includes noise pickup assembly, sound generating mechanism and controller, the controller respectively with noise pickup assembly with sound generating mechanism communication, the controller with the main control panel communication.
In some embodiments of the present application, the indoor unit further includes a wire controller, the wire controller communicates with the main control board or the controller, and the start and stop of the active noise reduction assembly can be manually controlled through the wire controller.
In some embodiments of the present application, when the fan is turned on, the manual turn-off/turn-on button on the line controller is turned on, and the start and stop of the active noise reduction assembly can be controlled by the manual turn-off/turn-on button.
In some embodiments of the present application, when the fan is turned off, a manual turn-off/turn-on button on the line controller turns off the light.
In some embodiments of the present application, the main control board controls the start and stop of the active noise reduction assembly in a power-on and power-off manner; when the fan stops, the main control board powers off the controller; when the fan is started, the main control board powers on the controller, and a delay module is arranged in the controller to control the active noise reduction assembly to be started after the delay time T.
In some embodiments of the present application, the time T is 2-60 s.
Compared with the prior art, the invention has the advantages and positive effects that:
in the disclosed air duct type air conditioner indoor unit of this application, the start-stop of fan and the start-stop of the subassembly that falls of initiatively fall are correlated. Specifically, when the fan stops, the active noise reduction assembly stops synchronously, and the noise collection device is prevented from sending sound waves which are easy to be perceived by human ears due to the fact that far-field noise is collected, so that the noise reduction effect is improved. When the fan is started, the active noise reduction assembly is started after the delay time T, so that the fan is prevented from bringing adverse effects to the active noise reduction assembly due to vibration at the initial operation stage, and the stability of the active noise reduction assembly is improved.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an indoor unit according to an embodiment;
fig. 2 is a control flowchart of the indoor unit according to the embodiment.
Reference numerals:
10-a fan;
20-an active noise reduction component, 21-a noise acquisition device, 22-a sound production device and 23-a controller;
30-a main control board;
40-a wire controller.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, the air duct type air conditioner indoor unit in the application comprises a shell, an air outlet is formed in the shell, a fan 10 and an indoor heat exchanger are arranged in the shell, the fan 10 provides power for air flowing in the indoor unit, and air after heat exchange of the indoor heat exchanger flows out through the air outlet to achieve air temperature adjustment.
The indoor unit comprises an active noise reduction assembly 20 which can generate noise reduction sound waves with opposite phases with external noise so as to achieve the effect of reducing the noise and improve the use experience of the air duct type air conditioner.
The active noise reduction assembly 20 includes a noise collection device 21, a sound generation device 22, and a controller 23, and the controller 23 is in communication with the noise collection device 21 and the sound generation device 22, respectively.
The noise collecting device 21 collects the sound signal and sends the sound signal to the controller 23; the controller 23 analyzes and calculates the received sound signal to obtain a control signal with equal amplitude and opposite phase with the noise signal, and the generated control signal is sent to the sound generating device 22; the sound emission device 22 emits an inverted signal having the same frequency as the noise signal and an opposite phase to the noise signal on the noise transmission path in response to the received control signal. The inverted signal and the noise signal are offset, so that the noise signal transmitted to the human ear is effectively reduced, and the noise reduction effect is realized.
The noise collecting device 21 generally employs a microphone, and the sound generating device 22 generally employs a speaker.
The noise collecting device 21 and the sound generating device 22 are usually disposed at the air outlet to effectively reduce the noise of the outlet air.
The present application relates the start and stop of fan 10 to the start and stop of active noise reduction assembly 20 in order to further optimize the noise reduction effect.
Referring to fig. 2, when the outdoor unit is defrosted or the indoor temperature reaches the system set value, the indoor unit needs to be stopped at this time, and the fan 10 provided in the indoor unit is also stopped accordingly. When the fan 10 stops, the active noise reduction assembly 20 also stops synchronously, so that the noise collection device 21 is prevented from sending sound waves easily perceived by human ears due to the collection of far-field noise, and the noise reduction effect is improved.
When the fan 10 is turned on, the rotation speed of the fan 10 is low in an initial stage of turning on the fan 10, and the amplitude of vibration caused by the rotation is high, and the vibration caused thereby may be transmitted to the entire air conditioner, which may affect the stability of the active noise reduction system 20. When the fan 10 is operated for a period of time, the rotation speed of the fan 10 gradually increases until the set rotation speed is reached, and at this time, the vibration caused by the rotation of the fan 10 gradually weakens.
Therefore, in the present application, after the fan 10 is turned on, the active noise reduction element 20 is turned on after the delay time T, so as to avoid the adverse effect on the active noise reduction element 20 caused by the fan 10 in the initial stage of operation, thereby improving the stability of the active noise reduction element 20.
In some embodiments of the present application, the delay time T is 2-60s, and the specific time depends on the product model.
In some embodiments of the present application, referring to fig. 1, the indoor unit further includes a main control board 30, and the main control board 30 is respectively in communication with the fan 10 and the active noise reduction assembly 20, and controls the operation of the active noise reduction assembly 20 according to the operation condition of the fan 10.
Specifically, when the outdoor unit needs defrosting or the indoor temperature reaches a set value, the main control board 30 controls the fan 10 to stop, and meanwhile, the main control board 30 controls the active noise reduction assembly 10 to stop synchronously.
When the indoor unit is started, the main control board 30 controls the fan 10 to be turned on, and meanwhile, the main control board 30 controls the active noise reduction assembly 20 to be turned on after a delay time T.
The controller 23 in the active noise reduction assembly 20 communicates with the main control board 30, and the main control board 30 controls the start and stop of the active noise reduction assembly 20, actually, the main control board 30 controls the start and stop of the controller 23.
In some embodiments of the present application, the indoor unit further includes a wire controller 40, the wire controller 40 communicates with the main control board 30 or the controller 23, and the start and stop of the active noise reduction assembly 20 can be manually controlled through the wire controller 23.
When the line controller 40 communicates with the main control board 30, the line controller 40 sends the start/stop command to the main control board 30, and the main control board 30 sends the start/stop command to the controller 23.
When the drive-by-wire 40 is in communication with the controller 23, the drive-by-wire 40 directly sends a start-stop command to the controller 23.
In the configuration shown in fig. 1 of the present embodiment, the drive-by-wire 40 communicates with the main control board 30.
The particular manner in which the start and stop of the active noise reduction assembly 20 is controlled by the drive-by-wire 40 is as follows.
When fan 10 is turned on, the manual off/on button on line controller 40 is illuminated, and the user can manually control the on/off of active noise reduction assembly 20 via the manual off/on button.
That is, after the fan 10 is turned on, the active noise reduction assembly 20 is turned on in two ways, one is automatically controlled by the main control board 30 to delay the turning on of the active noise reduction assembly 20, and the other is manually controlled by the line controller 40. When the control is performed by the wire controller 40, the button pressing time of the wire controller 40 needs to be after the time T after the fan 10 is turned on, otherwise, the button on the wire controller 40 is invalid, so as to ensure that the active noise reduction assembly 20 is turned on with a delay after the fan 10 is turned on.
The wired controller 40 is configured to allow a user to select whether to reduce noise when the fan 10 is turned on, and to turn off the active noise reduction assembly 20 through the wired controller 40 if the user does not require a noise reduction function.
When the fan 10 is turned off, the manual off/on button on the line controller 40 turns off the light, and at this time, the active noise reduction assembly 20 cannot be turned on through the line controller 40, so as to ensure that the active noise reduction assembly 20 is also turned off when the fan 10 is turned off.
In some embodiments of the present application, the main control board 30 may control the start and stop of the active noise reduction assembly 20 in an up-and-down electrical manner.
Specifically, when the fan 10 is stopped, the main control board 30 powers down the controller 23 to achieve the turning off of the active noise reduction assembly 20.
When the fan 10 is turned on, the main control board 30 powers on the controller 23, a delay module is disposed in the controller 23, and the active noise reduction assembly 20 can be controlled to be turned on after the fan 10 is turned on by a delay time T through the delay module.
In addition, the manual control scheme on the wire controller 40 can be designed in a hidden manner, and when the active noise reduction function is actually required to be turned off when the indoor unit is running, the active noise reduction assembly 20 can be turned off manually through function selection.
In the present application, the communication between the main control board 30 and the controller 23, the fan 10 and the line controller 40 may adopt UART communication, Homebus communication, 485 communication, and the like.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. An air duct type air conditioner indoor unit, comprising:
a fan that powers the flow of gas within the indoor unit;
an active noise reduction component capable of generating noise reduction sound waves in a phase opposite to that of external noise;
when the fan stops, the active noise reduction assembly stops synchronously; when the fan is started, the active noise reduction assembly is started after the delay time T.
2. The indoor unit of an air duct type air conditioner according to claim 1,
the indoor unit also comprises a main control board which is respectively communicated with the fan and the active noise reduction assembly and controls the operation of the active noise reduction assembly according to the operation condition of the fan;
when the fan stops, the main control board controls the active noise reduction assembly to synchronously stop; when the fan is started, the main control board controls the active noise reduction assembly to be started after the delay time T.
3. The indoor unit of an air duct type air conditioner according to claim 2,
the active noise reduction assembly comprises a noise collection device, a sound production device and a controller, the controller is respectively communicated with the noise collection device and the sound production device, and the controller is communicated with the main control board.
4. The indoor unit of an air duct type air conditioner according to claim 3,
the indoor unit further comprises a wire controller, the wire controller is communicated with the main control board or the controller, and the start and stop of the active noise reduction assembly can be manually controlled through the wire controller.
5. The indoor unit of an air duct type air conditioner according to claim 4,
when the fan is started, the manual closing/starting key on the wire controller is turned on, and the starting and stopping of the active noise reduction assembly can be controlled through the manual closing/starting key.
6. The indoor unit of an air duct type air conditioner according to claim 4,
when the fan is turned off, the manual turn-off/start button on the wire controller turns off the light.
7. The indoor unit of an air duct type air conditioner according to claim 2,
the main control board controls the start and stop of the active noise reduction assembly in a power-on and power-off mode; when the fan stops, the main control board powers off the controller; when the fan is started, the main control board powers on the controller, and a delay module is arranged in the controller to control the active noise reduction assembly to be started after the delay time T.
8. The indoor unit of an air duct type air conditioner according to claim 1,
the time T is 2-60 s.
CN202011184186.2A 2020-10-29 2020-10-29 Air pipe type air conditioner indoor unit Pending CN112344525A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0863172A (en) * 1994-08-16 1996-03-08 Nec Corp Low noise fan system
CN108534196A (en) * 2018-03-08 2018-09-14 佛山市云米电器科技有限公司 The cooking apparatus and its interlock method of noise reduction system and vision detection system linkage
CN108916946A (en) * 2018-03-08 2018-11-30 佛山市云米电器科技有限公司 A kind of kitchen ventilator and noise-reduction method of denoising device and the linkage of exhausting component
CN109058176A (en) * 2018-08-01 2018-12-21 济南浪潮高新科技投资发展有限公司 A kind of radiator fan with active noise reduction function
CN111536587A (en) * 2020-04-24 2020-08-14 青岛海信日立空调系统有限公司 Air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0863172A (en) * 1994-08-16 1996-03-08 Nec Corp Low noise fan system
CN108534196A (en) * 2018-03-08 2018-09-14 佛山市云米电器科技有限公司 The cooking apparatus and its interlock method of noise reduction system and vision detection system linkage
CN108916946A (en) * 2018-03-08 2018-11-30 佛山市云米电器科技有限公司 A kind of kitchen ventilator and noise-reduction method of denoising device and the linkage of exhausting component
CN109058176A (en) * 2018-08-01 2018-12-21 济南浪潮高新科技投资发展有限公司 A kind of radiator fan with active noise reduction function
CN111536587A (en) * 2020-04-24 2020-08-14 青岛海信日立空调系统有限公司 Air conditioner

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