CN111023310A - Multi-split air conditioner - Google Patents

Multi-split air conditioner Download PDF

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Publication number
CN111023310A
CN111023310A CN201911283743.3A CN201911283743A CN111023310A CN 111023310 A CN111023310 A CN 111023310A CN 201911283743 A CN201911283743 A CN 201911283743A CN 111023310 A CN111023310 A CN 111023310A
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CN
China
Prior art keywords
air conditioner
compressor
wall
split air
indoor unit
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
Application number
CN201911283743.3A
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Chinese (zh)
Inventor
李君飞
张晓�
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Hisense Hitachi Air Conditioning System Co Ltd filed Critical Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority to CN201911283743.3A priority Critical patent/CN111023310A/en
Publication of CN111023310A publication Critical patent/CN111023310A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0043Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56Remote control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61Control or safety arrangements characterised by user interfaces or communication using timers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/247Active noise-suppression

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a multi-split air conditioner, which comprises: an outdoor unit; a plurality of indoor units which are correspondingly connected with the outdoor unit through air pipes and liquid pipes respectively; the number of the indoor units is less than or equal to 3, and at least one of the indoor units is a wall-mounted indoor unit; a controller disposed in the outdoor unit, communicating with the indoor units, and configured to: the air conditioner can control the low-wind or mute refrigeration operation of any one wall-mounted indoor unit in all the indoor units, and control the compressor when one wall-mounted indoor unit in the indoor units is controlled to operate in the low-wind or mute mode so as to increase the frequency reduction speed when the compressor operates, reduce the frequency increase speed when the compressor operates and limit the upper limit frequency of the operation of the compressor; and controlling the opening of the throttling component corresponding to the wall-mounted indoor unit when one wall-mounted indoor unit in the indoor units is controlled to run in low wind or mute. The invention solves the problem of poor user experience caused by noise of refrigerant flow velocity when the multi-split air conditioner with the wall-mounted indoor unit is in a low wind or mute mode in the prior art.

Description

Multi-split air conditioner
Technical Field
The invention belongs to the technical field of household electrical appliances, and particularly relates to an improvement of a multi-split structure.
Background
The existing multi-split air conditioner system generally comprises an outdoor unit and an indoor unit, a structure that the multi-split air conditioner is connected with a wall-mounted indoor unit may exist in an outdoor actual on-line process, however, when a user is connected with the wall-mounted indoor unit and the floor where the user is located is not high, the noise of a fan is weakened at night or when the indoor background sound is small and the user switches on a low wind or mute mode, the flowing sound of a refrigerant in the wall-mounted indoor unit is highlighted to generate large noise, so that the user experience is poor and the user complaint is easily caused.
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
The invention aims at the problem that the flow velocity of the refrigerant is noisy to cause poor user experience when the multi-split air conditioner with the wall-mounted indoor unit is in a low-wind or mute mode in the prior art.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a multi-split air conditioner comprises:
an outdoor unit;
a plurality of indoor units which are correspondingly connected with the outdoor unit through air pipes and liquid pipes respectively;
the number of the indoor units is less than or equal to 3, and at least one of the indoor units is a wall-mounted indoor unit;
a controller configured to: can control any wall-mounted indoor unit in all the indoor units to run in low-wind or mute refrigeration,
controlling the compressor when one wall-mounted indoor unit in the indoor units is controlled to run in low wind or mute mode so as to increase the frequency reduction speed when the compressor runs, reduce the frequency increase speed when the compressor runs and limit the upper limit frequency of the running of the compressor;
and controlling the opening of the throttling component corresponding to the wall-mounted indoor unit when one wall-mounted indoor unit in the indoor units is controlled to run in low wind or mute.
Furthermore, the multifunctional multi-split air conditioner also comprises a function selection key which is arranged on a remote control part of the multi-split air conditioner and can transmit signals to the controller when being pressed down, and each part of the multi-split air conditioner is controlled by the controller so as to shorten the downtime of the whole multi-split air conditioner.
Furthermore, the compressor further comprises a function selection key which is arranged on a remote control part of the multi-split air conditioner and can transmit a signal to the controller when being pressed down, and the controller controls the oil return action of the compressor to be cancelled.
Further, the controller can acquire the temperature at the air outlet of the compressor through the pressure sensor, control the compressor to continuously operate when the temperature is lower than a preset temperature value, and control the compressor to stop operating when the temperature at the air outlet is higher than the preset temperature value.
Furthermore, the controller is pre-stored with an upper limit opening and a lower limit opening corresponding to the throttling component when the wall-mounted unit runs in low wind or silence, and when the opening of the throttling component reaches the upper limit opening or the lower limit opening, the controller controls the throttling component to stop opening or closing.
Further, the controller prestores an upper limit frequency of the compressor operation, and when the compressor operates to the upper limit frequency, the controller correspondingly controls the compressor to keep the original working condition operation.
Furthermore, the throttling component of the wall-mounted indoor unit is provided with a damping block.
Furthermore, a plurality of channels are formed inside the indoor heat exchanger of the wall-mounted indoor unit, and the number of the channels is more than or equal to 2 and less than or equal to 4.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a multi-split air conditioner with a wall-mounted indoor unit, wherein the wall-mounted indoor unit needs to be assembled in a user room when the multi-split air conditioner is assembled and used, and the flowing noise of a refrigerant is high when the wall-mounted indoor unit operates in a low-wind or mute mode.
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 technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a multi-split air conditioner according to the present invention;
FIG. 2 is a noise test chart corresponding to the multi-split air conditioner of the present invention and the multi-split air conditioner of the prior art when starting;
FIG. 3 is a noise test chart corresponding to the multi-split air conditioner of the present invention and the prior art when the multi-split air conditioner is stopped.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides an embodiment of a multi-split air conditioner, which comprises: the outdoor unit 200 comprises a compressor 300 and an outdoor heat exchanger, wherein the compressor 300 is connected with the outdoor heat exchanger, and a plurality of groups of outdoor air pipes and outdoor liquid pipes are respectively led out of the outdoor heat exchanger.
The indoor units 100 are provided in plural, and are connected to the outdoor air pipes and the outdoor liquid pipes corresponding to the outdoor unit 200 through the indoor air pipes and the indoor liquid pipes, respectively, so as to connect the outdoor unit 200 and the indoor units 100.
The number of the indoor units 100 is less than or equal to 3, and at least one of the indoor units 100 is a wall-mounted indoor unit 100, that is, the indoor unit 100 in this embodiment may be a combination of a common indoor unit 100 and a wall-mounted indoor unit 100, at least one indoor unit 100 of the indoor units 100 is a wall-mounted indoor unit 100, and when being set, 2 or 3 indoor units may be correspondingly set as the wall-mounted indoor units 100, which is not limited specifically herein. That is, the indoor units 100 in this embodiment are the indoor units 100 that satisfy less than a certain number, and in this embodiment a selects 2, that is, the corresponding indoor unit group in this embodiment is a small number of indoor unit groups.
The controller is provided with a temperature sensor at the side of the exhaust port of the compressor 300 in the outdoor unit 200, the controller can acquire the temperature at the exhaust port of the compressor 300 through the temperature sensor, control the compressor 300 to continuously operate when the temperature is lower than the preset temperature, and control the compressor 300 to stop operating when the temperature at the exhaust port is higher than the preset temperature, namely, when the temperature at the exhaust port of the compressor 300 exceeds the preset temperature value, the compressor 300 exceeds the normal working condition, so as to realize the self-service protection of the compressor 300, therefore, the compressor 300 should be controlled to stop operating.
The controller is configured to: when the temperature of the discharge port of the compressor 300 does not exceed the preset temperature value, the compressor 300 can be normally operated, and the wall-mounted indoor units 100 in all the indoor units 100 can be controlled to operate in a low-wind or silent cooling mode, or any wall-mounted indoor unit 100 can be controlled to operate in a silent mode, and when the low-wind or silent cooling operation is performed and the ambient temperature noise is low, the highlighted refrigerant flow noise is large, and in the embodiment, the controller of the multi-split air conditioner can also correspondingly control the compressor 300 when the wall-mounted indoor unit 100 in the indoor unit 100 is controlled to operate in a low-wind or silent operation state.
Specifically, the flow rate of the refrigerant can be controlled by controlling the operating frequency of the compressor 300, when the compressor 300 operates at a high frequency, the flow rate of the refrigerant is high, and the noise generated when the flow rate is high is relatively high.
In this embodiment, the controller can also control to increase the speed of the compressor 300 during the frequency reduction, and decrease the speed corresponding to the frequency increase of the compressor 300, because the flow speed of the refrigerant is increased and the noise generated is increased during the frequency increase of the compressor 300, in this embodiment, the speed of the frequency increase of the compressor 300 is decreased during the control, so that the flow speed of the refrigerant is slowly increased, and the noise is reduced.
When the compressor 300 reduces the frequency, the flowing speed of the refrigerant is inevitably reduced, and the noise is reduced, so that the speed is increased when the frequency is reduced, and the flowing speed of the refrigerant is increased to reduce the noise.
And controlling the opening degree of the throttling part 400 corresponding to one wall-mounted indoor unit 100 in the indoor unit 100 during low wind or silent operation, preferably, in this embodiment, the throttling part 400 is an electronic expansion valve, when the opening degree of the throttling part 400 is larger, the refrigerant flow is increased, and the flow rate is accelerated, in this embodiment, by controlling the opening degree of the throttling part 400, the problem of large noise caused by the large opening degree is avoided, specifically, during setting, the upper limit opening degree and the lower limit opening degree corresponding to the throttling part 400 during low wind or silent operation of the wall-mounted indoor unit are prestored in the controller, and when the opening degree of the throttling part 400 reaches the upper limit opening degree or the lower limit opening degree, the controller controls the throttling part 400 to stop opening or closing.
Furthermore, the present embodiment further includes a function selection button, which is disposed on the remote control unit of the multi-split air conditioner, and is capable of transmitting a signal to the controller when being pressed, and controlling the multi-split air conditioner through the controller to shorten the downtime, i.e., reduce the pumpdown time of the multi-split air conditioner.
In order to further reduce the noise generated when the wall-mounted indoor unit 100 of the multi-split air conditioner operates in a low wind, breeze or mute mode, a function selection button is further provided in the embodiment, which can be triggered or not triggered according to the function selection, and is arranged on the remote control unit of the multi-split air conditioner, when the function selection button is pressed and triggered, the function selection button can transmit a signal to the controller, the controller controls the oil return action of the compressor 300 to be cancelled, and the noise generated by the refrigerant flow is further reduced by cancelling the oil return action of the compressor 3001 hour and 1 time.
Further, the controller pre-stores an upper limit frequency of the operation of the compressor 300, and when the compressor 300 operates to the upper limit frequency, the controller correspondingly controls the compressor 300 to keep operating under the original working condition.
The wall-mounted indoor unit 100 in this embodiment includes an indoor heat exchanger and a throttling member 400, and in order to further enhance the noise reduction effect of the multi-split air conditioner in this embodiment, a damping block is disposed on the throttling member 400 in this embodiment, so as to reduce the noise generated by the throttling member 400.
Preferably, the indoor heat exchanger of the wall-mounted indoor unit 100 is internally provided with a plurality of channels, the number of the channels is greater than or equal to 2 and less than or equal to 4, the number of the branch channels of the indoor heat exchanger can be increased to reduce the flow rate of the refrigerant and further reduce the flowing noise of the refrigerant, and meanwhile, in order to ensure the heat exchange performance of the indoor heat exchanger, the number of the branch channels cannot be infinitely increased, and the maximum number of the branch channels is set to be 4 channels in this embodiment, so as to reduce the flowing noise of the refrigerant on the premise of ensuring the heat exchange performance.
In the multi-split air conditioner with the wall-mounted indoor unit 100 according to the present embodiment, when the wall-mounted indoor unit 100 is assembled and used, the wall-mounted indoor unit 100 needs to be assembled and used indoors by a user, and when the wall-mounted indoor unit 100 is in a low wind or silent operation, the refrigerant flowing noise is particularly noticeable.
In this embodiment, when the wall-mounted indoor unit 100 operates in the cooling and low-wind or mute mode, the multi-split air conditioner controls the operating frequency of the compressor 300 to be less than the upper limit frequency of the compressor 300, so as to reduce the flow rate of the refrigerant and reduce the noise.
The compressor 300 is controlled to reduce the frequency increasing speed of the compressor 300, so that the flow speed of the refrigerant is slowly increased, the frequency reducing speed of the compressor 300 is increased, the flow speed of the refrigerant is rapidly reduced, and the generation of the flow noise of the refrigerant is reduced.
The opening degree of the throttling part 400 of the wall-mounted indoor unit 100 is controlled to adjust the flow speed of the refrigerant in the wall-mounted indoor unit 100, thereby controlling the flow noise of the refrigerant.
The multi-split air conditioner in the embodiment reduces the noise of the refrigerant by comprehensively controlling from multiple aspects, and improves the comfort of users.
As shown in fig. 2 to 3, fig. 2 to 3 are refrigerant flow noise analysis diagrams of the multi-split air-conditioning system of the present embodiment and the multi-split air-conditioning system of the prior art, specifically, a graph 1 is a noise test during start and stop of the multi-split air-conditioning system of the present embodiment, and a graph 2 is a noise test during start and stop of the multi-split air-conditioning system of the prior art. By comparison, plot 1 is significantly more noisy than plot 2, both in noise duration and in noise magnitude.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (8)

1. A multi-split air conditioner comprises:
outdoor unit, its characterized in that still includes:
a plurality of indoor units are arranged and are respectively and correspondingly connected with the outdoor unit through air pipes and liquid pipes,
the number of the indoor units is less than or equal to 3, and at least one of the indoor units is a wall-mounted indoor unit;
a controller configured to: can control any wall-mounted indoor unit in all the indoor units to run in low-wind or mute refrigeration,
controlling the compressor when one wall-mounted indoor unit in the indoor units is controlled to run in low wind or mute mode so as to increase the frequency reduction speed when the compressor runs, reduce the frequency increase speed when the compressor runs and limit the upper limit frequency of the running of the compressor;
and controlling the opening of the throttling component corresponding to the wall-mounted indoor unit when one wall-mounted indoor unit in the indoor units is controlled to run in low wind or mute.
2. The multi-split air conditioner as claimed in claim 1, further comprising a function selection button provided on a remote control unit of the multi-split air conditioner, which is pressed to transmit a signal to the controller and control each unit of the multi-split air conditioner through the controller to reduce a down time of the whole multi-split air conditioner.
3. The multi-split air conditioner as claimed in claim 1, further comprising a function selection button provided on a remote control unit of the multi-split air conditioner, which is capable of transmitting a signal to the controller when being pressed, and controlling the oil return operation of the compressor to be cancelled by the controller.
4. The multi-split air conditioner as claimed in claim 1, wherein the controller is capable of acquiring the temperature at the discharge port of the compressor through the pressure sensor, controlling the compressor to continuously operate when the temperature is less than a preset temperature value, and controlling the compressor to stop operating when the temperature at the discharge port is greater than the preset temperature value.
5. The multi-split air conditioner as claimed in claim 1, wherein the controller is pre-stored with an upper limit opening and a lower limit opening corresponding to the throttling element when the wall-mounted air conditioner is running in low wind or in a mute state, and when the opening of the throttling element reaches the upper limit opening or the lower limit opening, the controller controls the throttling element to stop opening or closing.
6. The multi-split air conditioner as claimed in claim 1, wherein an upper limit frequency of the compressor operation is pre-stored in the controller, and when the compressor operates to the upper limit frequency, the controller correspondingly controls the compressor to keep operating at the original working condition.
7. The multi-split air conditioner as claimed in claim 1, wherein a damping block is provided on a throttling part of the wall-mounted indoor unit.
8. The multi-split air conditioner as claimed in claim 1, wherein a plurality of flow passages are formed in the indoor heat exchanger of the wall-mounted indoor unit, and the number of the flow passages is 2 or more and 4 or less.
CN201911283743.3A 2019-12-13 2019-12-13 Multi-split air conditioner Pending CN111023310A (en)

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Application Number Priority Date Filing Date Title
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CN114413440A (en) * 2022-01-04 2022-04-29 宁波奥克斯电气股份有限公司 Control method of air conditioner, air conditioner and storage medium
TWI852216B (en) 2022-12-13 2024-08-11 聲寶股份有限公司 Air conditioning apparatus with noise detecting function

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Publication number Priority date Publication date Assignee Title
CN114413440A (en) * 2022-01-04 2022-04-29 宁波奥克斯电气股份有限公司 Control method of air conditioner, air conditioner and storage medium
CN114413440B (en) * 2022-01-04 2023-07-04 宁波奥克斯电气股份有限公司 Air conditioner control method, air conditioner and storage medium
TWI852216B (en) 2022-12-13 2024-08-11 聲寶股份有限公司 Air conditioning apparatus with noise detecting function

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