KR20110056651A - Outdoor unit of air conditioner - Google Patents

Outdoor unit of air conditioner Download PDF

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Publication number
KR20110056651A
KR20110056651A KR1020090113064A KR20090113064A KR20110056651A KR 20110056651 A KR20110056651 A KR 20110056651A KR 1020090113064 A KR1020090113064 A KR 1020090113064A KR 20090113064 A KR20090113064 A KR 20090113064A KR 20110056651 A KR20110056651 A KR 20110056651A
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KR
South Korea
Prior art keywords
noise
outdoor
air conditioner
fan
outdoor unit
Prior art date
Application number
KR1020090113064A
Other languages
Korean (ko)
Inventor
정종환
Original Assignee
엘지전자 주식회사
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.)
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Publication date
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Priority to KR1020090113064A priority Critical patent/KR20110056651A/en
Publication of KR20110056651A publication Critical patent/KR20110056651A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/40—Vibration or noise prevention at 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
    • 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
    • F24F2013/242—Sound-absorbing material
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE: An outdoor unit of an air conditioner is provided to reduce noise emitting from the outdoor unit using a noise reducing operation. CONSTITUTION: An outdoor unit(1) of an air conditioner comprises a body(10), a fan, a motor, and an active noise control unit(20). The body comprises an outdoor heat exchanger. The heat exchange of refrigerant and outdoor air is performed in the outdoor heat exchanger. The fan makes the outdoor air forcibly flow to pass the outdoor heat exchanger. The motor rotates the fan. The active noise control unit generates a sound wave with the opposite phase to that of the noise to minimize noise, which is generated by at least one of the fan and the motor. The active noise control unit operates if low-noise requirement is satisfied.

Description

Outdoor unit of air conditioner

The present invention relates to an outdoor unit of an air conditioner.

In general, an air conditioner is a device for cooling and heating a room by performing a refrigerant cycle consisting of compression, condensation, expansion, and evaporation.

The air conditioner includes an indoor unit in which heat exchange is performed between the refrigerant and indoor air, and an outdoor unit in which heat exchange is performed between the refrigerant and outdoor air. In detail, the indoor unit includes an indoor heat exchanger for heat exchange between a refrigerant and indoor air, a fan for blowing the indoor air, and a motor for rotating the fan. The outdoor unit includes an outdoor heat exchanger for heat exchange between a refrigerant and outdoor air, a fan for blowing the outdoor air, a motor for rotating the fan, a compressor for compressing the refrigerant, an expansion unit for expanding the refrigerant, A four-way valve for changing the flow direction of the refrigerant is included.

When indoor cooling is performed, the indoor heat exchanger is an evaporation means for evaporating the refrigerant, and the outdoor heat exchanger is a condensation means for condensing the refrigerant. The opposite is true when the room is heated. The switching of the cooling and heating operation is performed by changing the flow direction of the refrigerant by the four-way valve.

The present invention is to provide an outdoor unit of the air conditioner that can minimize the noise generated during operation.

And, to provide an outdoor unit of the air conditioner that can minimize the actual discomfort of the user.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

An outdoor unit of an air conditioner according to an embodiment of the present invention for achieving the above object, the main body including an outdoor heat exchanger is a heat exchange between the refrigerant and the outdoor air; A fan forcing the outdoor air to pass through the outdoor heat exchanger; A fan motor for rotating the fan; And an active noise control unit for generating sound waves having an antiphase with the noise in order to minimize noise generated by at least one of the fan and the fan motor, wherein the active noise control unit corresponds to a low noise requirement. If it is characterized in that the operation.

According to the outdoor unit of the air conditioner according to the present invention having the above configuration, the noise generated in the outdoor unit can be reduced by the noise reduction operation. More specifically, when noise is generated in the outdoor unit, the active noise control unit generates sound waves having an antiphase with the noise. Then, the noise is canceled by the sound wave is extinguished, there is an advantage that can minimize the noise generated in the outdoor unit.

And, such noise reduction operation is to be performed when the low noise requirements. That is, the noise reduction operation is performed when the user is likely to be sensitive to noise, such as at night. Therefore, there is an advantage that can substantially minimize the discomfort of the user due to the noise of the outdoor unit.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and that other embodiments falling within the scope of the present invention may be easily devised by adding, Can be proposed.

1 is a perspective view showing a first embodiment of an outdoor unit of an air conditioner according to the present invention, FIG. 2 is an exploded perspective view of a first embodiment of an outdoor unit of an air conditioner according to the present invention, and FIG. It is a control block diagram of a 1st Example in the outdoor unit of an air conditioner.

1 to 3, the outdoor unit 1 includes a main body 10 including an outdoor heat exchanger in which heat is exchanged between outdoor air and a refrigerant, a compressor (not shown) compressing the refrigerant, and the compressor. An accumulator (not shown) for filtering liquid refrigerant from the refrigerant flowing into the compressor and allowing only the refrigerant in the gas phase to flow into the compressor, a fan 101 for forcing the outdoor air toward the outdoor heat exchanger, and the fan. And a fan motor (not shown) for rotating the 101.

In detail, the main body 10 includes a suction port (not shown) for suctioning the outdoor air into the main body 10 and the air sucked into the main body 10 passes through the outdoor heat exchanger. A discharge port 102 for discharging to the outside of the main body 10 is formed. That is, the outdoor air is sucked into the main body 10 through the intake port, heat exchanges with the refrigerant while passing through the outdoor heat exchanger, and then is discharged to the outside of the main body 10 through the discharge port 102.

The compressor, accumulator, fan 101 and fan motor are installed inside the main body 10.

On the other hand, the outdoor unit 1 further includes an active noise control unit 20 for reducing noise generated during operation of the outdoor unit 1. Here, the active noise control unit 20, in order to minimize the noise of the outdoor unit 1, the active noise control (Generative Noise Control) for generating a sound wave having a phase out of phase with the noise generated from the outdoor unit (1) It works in a way. At this time, the sound waves generated by the active noise control unit 20 minimizes interference with the noise of the outdoor unit 1 to minimize the noise of the outdoor unit 1. The active noise control unit 20 is located at a point corresponding to the discharge port 102, that is, the discharge side of the fan 101.

In detail, the active noise control unit 20 includes a noise detector 24 for collecting noise generated from at least one of the fan 101 and the fan motor, and generating sound waves having an antiphase against the noise. A sound wave generator 25, a control unit 26 for controlling the sound waves generated in the sound wave generator 25 in accordance with the noise signal collected from the noise detector 24, the fan 101 and the fan motor The sound control unit 21 surrounding the outdoor air discharged from the fan 101, the noise detection unit 24, the sound wave generator 25 and the control unit 26 is accommodated to collect the noise of the noise control A case 22 and a fixing part 23 for fixing the noise control case 22 to the sound collecting part 21.

In more detail, the noise detector 24, the controller 26, and the sound wave generator 25 are electrically connected to each other to exchange control signals with each other. The noise detector 24 collects noise generated from at least one of the fan 101 and the fan motor and transmits a noise signal corresponding to the noise to the controller 26. The controller 26 transmits a sound wave signal corresponding to a sound wave having an antiphase with respect to the noise to the sound wave generator 25 based on the noise signal received from the noise detector 24. The sound wave generator 25 generates sound waves corresponding to the sound wave signals received from the controller 26.

In addition, the noise control case 22 includes an installation space for accommodating the noise detector 24, the controller 26, and the sound wave generator 25. In this case, the noise detector 24 is installed at a point close to the outdoor unit 1 based on the noise control case 22 so as to easily collect the noise generated from the outdoor unit 1. In addition, the sound wave generator 25 is installed at a point far from the outdoor unit 1 with respect to the noise control case 22 so as to easily remove noise generated and emitted from the outdoor unit 1. do. At this time, the noise control case 22 is located at the center of the sound collecting portion 21 with respect to a virtual plane orthogonal to the discharge direction of the outdoor air.

The collector 21 has a hollow cylindrical shape, and one end thereof is disposed to surround the discharge port 102. In more detail, one end of the sound collecting portion 21 surrounds the discharge port 102, and the other end of the sound collecting portion 21 is provided to face the outward direction of the outdoor unit 1. In addition, a fastening part 210 for fixing to the main body 10 is provided at one end of the sound collecting part 21. The fastening part 210 has a fastening hole for penetrating the fastening part 210 material for fixing the sound collecting part 21 and the main body 10. In addition, the sound absorbing material 211 for absorbing the noise generated from the fan 101 and the fan motor is provided on the inner surface of the sound collector 21.

The fixing part 23 includes a plurality of rod-shaped connecting parts 231, 232, 233, and 234 connecting the sound collecting part 21 and the noise control case 22. In more detail, the connecting portions 231, 232, 233, and 234 are rod-shaped in one direction as a whole. One end of the connection part 231, 232, 233, 234 is connected to the sound collecting part 21, and the other end of the connection part 231, 232, 233, 234 is connected to the noise control case 22. In this case, one end and the other end of the connection part 231, 232, 233, 234 may be fastened to the sound collecting part 21 and the noise control case 22 in such a manner that the fastening part 210 material penetrates.

By the fixing unit 23 and the fastening unit 210, the sound collecting unit 21 and the main body 10, the sound collecting unit 21 and the active noise control unit 20 can be easily coupled or separated There is this.

Hereinafter, the noise reduction operation of the first embodiment of the outdoor unit of the air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a flowchart showing the noise reduction operation of the first embodiment of the outdoor unit of the air conditioner according to the present invention.

Referring to FIG. 4, various noises may be generated during operation of the outdoor unit 1 of the air conditioner. For example, the flow noise due to friction with the outdoor air, the noise caused by the operation of the fan motor, the noise caused by the operation of the compressor, etc. during the rotation of the fan 101. Among these, the flow noise generated by the rotation of the fan 101 corresponds to a relatively loud noise.

And to the user, such noise is felt louder at night than during the day. This is because there are various living noises in addition to the outdoor unit 1 noise during the day, but the living noise is relatively small at night. In addition, since the user usually goes to bed at night, a quieter environment is required. In this case, an environment requiring noise reduction of the outdoor unit 1 may be referred to as a low noise requirement.

Therefore, the user can set the time for which the noise reduction operation of the outdoor unit 1 is performed. In this case, a time zone in which noise reduction of the outdoor unit 1 is required may be referred to as a reference time zone. That is, the user of the outdoor unit 1 can set the reference time zone.

The reference time zone may be set in various ways. For example, an input unit may be provided at one side of the outdoor unit 1 to input a signal by a user, and the reference time zone may be set according to the signal input through the input unit. In this case, the display unit may be further provided in the outdoor unit 1 to display the set reference time zone for the user to check. In addition, the input unit and the display unit may be provided in a terminal such as a remote controller provided separately to communicate with the outdoor unit 1.

When the reference time zone is set (S11), it is continuously determined whether the current time corresponds to the reference time zone. (S12) That is, it is determined whether the current time corresponds to the reference time zone, If it does not correspond to the reference time zone, it is again determined whether the current time corresponds to the reference time zone (S12).

However, when the current time corresponds to the reference time zone, the noise reduction operation is started (S13). In more detail, when the current time corresponds to the reference time zone, the noise generated by at least one of the fan 101 and the fan motor, that is, the outdoor unit 1, is collected through the noise detector 24. The control unit 26 controls the sound wave generator 25 to generate sound waves having an antiphase against the collected noise. When a sound wave having an antiphase with the noise is generated by the sound wave generator 25, the sound wave is extinct and interferes with the noise, thereby minimizing the noise.

After the noise reduction operation is started, it is determined whether the current time does not correspond to the reference time zone (S14). When the current time corresponds to the reference time zone, it is again determined whether the current time does not correspond to the reference time zone (S14). However, when the current time does not correspond to the reference time zone, the noise reduction operation of the outdoor unit 1 is stopped (S15).

In addition, the above-described process may be repeatedly performed while the operation of the air conditioner, that is, the outdoor unit 1 is continued.

By the above process, the noise reduction operation can be performed only in the reference time zone. That is, there is an advantage that the noise reduction operation can be performed at a time desired by the user. In this case, the current time corresponding to the reference time zone may be regarded as a low noise requirement for determining whether to perform the noise reduction operation.

In addition, as described above, since the user is generally more sensitive to noise at night than at daytime, the reference time zone may be set to a corresponding time zone after sunset and before sunrise. For example, assuming that the sunset time is 6 pm and the sunrise time is 6 am, the reference time zone may be set from 6 pm to 6 am. Therefore, the noise reduction operation is automatically performed at night, and there is an advantage that the noise reduction operation can be stopped during the day.

EMBODIMENT OF THE INVENTION Hereinafter, the noise reduction operation | movement of 2nd Example of the outdoor unit of the air conditioner by this invention is demonstrated in detail with reference to attached drawing. This embodiment differs from the first embodiment in that the low noise requirement is when the outdoor temperature falls below the reference temperature.

Fig. 5 is a control block diagram of the second embodiment of the outdoor unit of the air conditioner according to the present invention, and Fig. 6 is a flowchart showing the noise reduction operation of the second embodiment of the outdoor unit of the air conditioner according to the present invention.

5 and 6, the outdoor unit of the air conditioner further includes a temperature sensor 37 for sensing a temperature of outdoor air.

When the operation of the air conditioner is started, the temperature of the outdoor air is sensed through the temperature sensor 37 (S21).

It is determined whether the temperature of the outdoor air falls below the reference temperature (S22), and when the temperature of the outdoor air falls below the reference temperature, the noise reduction operation of the outdoor unit is started (S23). However, when the temperature of the outdoor air exceeds the reference temperature, the outdoor air temperature is detected again (S22).

After the noise reduction operation is started, the temperature of the outdoor air is sensed (S24). In operation S25, it is determined whether the temperature of the outdoor air corresponds to the reference temperature or more. When the temperature of the outdoor air falls below the reference temperature, the outdoor air temperature is detected again (S24). However, when the temperature of the outdoor air corresponds to the reference temperature or more, the noise reduction operation is stopped (S26).

In this case, the reference temperature may be set by the installer or the user.

According to the outdoor unit, the noise reduction operation may be automatically performed at night, and the noise reduction operation may be stopped during the day. More specifically, the temperature of outdoor air is generally lower at night, and the temperature of outdoor air is relatively high at daytime. However, the temperature of the outdoor air detected at the boundary time between night and day may be set as the reference temperature. In such a case, when the temperature of the outdoor air changes from the day to the night so that the temperature of the outdoor air falls below the reference temperature, the noise reduction operation is performed, and the temperature of the outdoor air corresponds to the reference temperature or more by changing from the night to the daytime. In this case, the noise reduction operation is stopped. That is, the noise reduction operation is automatically performed at night, and the noise reduction operation is stopped during the day. At this time, the temperature of the outdoor air is less than the reference temperature, it can be seen as a low noise requirement for determining whether to perform the noise reduction operation.

Here, the reference temperature varies depending on the season. In general, the average temperature of the outdoor air changes according to the spring, summer, autumn and winter seasons. Reflecting this tendency, the reference temperature can be set to different values depending on the season. For example, the summer reference temperature may be set to a value higher than the winter reference temperature. In such a case, since the reference temperature is also automatically changed as the seasons change, an optimum noise reduction operation for each season is possible.

Hereinafter, the noise reduction operation of the third embodiment of the outdoor unit of the air conditioner according to the present invention will be described in detail with reference to the accompanying drawings. This embodiment differs from the first embodiment in that the low noise requirement is a case where the fan speed is equal to or greater than the reference speed.

7 is a control block diagram of the third embodiment of the outdoor unit of the air conditioner according to the present invention, and FIG. 8 is a flowchart showing the noise reduction operation of the third embodiment of the outdoor unit of the air conditioner according to the present invention.

7 and 8, the outdoor unit of the air conditioner further includes a rotation sensor 47 for detecting the number of revolutions per hour of the fan 101.

When the operation of the air conditioner is started, the rotational speed of the fan 101 is detected through the rotation sensor 47 (S31).

It is determined whether the hourly rotational speed of the fan 101 corresponds to or more than the reference rotational speed (S32). It is started (S33). However, when the rotational speed per hour of the fan 101 is less than the reference rotational speed, the temperature of the outdoor air is detected again (S31).

After the noise reduction operation is started, the rotation speed per hour of the fan 101 is sensed (S34), and it is determined whether the rotation speed per hour of the fan 101 corresponds to the reference rotation speed or less (S35). When the rotational speed per hour of the fan 101 exceeds the reference rotational speed, the rotational speed of the fan 101 is detected again (S34). However, when the rotational speed per hour of the fan 101 is equal to or less than the reference rotational speed, the noise reduction operation is stopped (S36).

In this case, the reference rotation speed may be set by the installer or the user.

According to the outdoor unit, there is an advantage that the noise reduction operation can be automatically performed and stopped according to the substantially loudness of the outdoor unit. In more detail, the part which generates the largest noise among the noise of the outdoor unit is the flow noise by the rotation of the fan 101. That is, as the rotational speed of the fan 101 increases, the flow noise by the fan 101 is further increased.

However, according to the outdoor unit, when the rotational speed of the fan 101, that is, the rotational speed per hour corresponds to the reference rotational speed or more, the noise reduction operation is performed. When the rotation speed per hour corresponds to the reference rotation speed or less, the noise reduction operation is stopped. Therefore, the noise reduction operation can be optimally performed according to the substantial noise level of the outdoor unit.

1 is a perspective view showing a first embodiment of an outdoor unit of an air conditioner according to the present invention.

2 is an exploded perspective view of a first embodiment of an outdoor unit of an air conditioner according to the present invention;

3 is a control block diagram of the first embodiment in the outdoor unit of the air conditioner according to the present invention;

Fig. 4 is a flowchart showing the noise reduction operation of the first embodiment of the outdoor unit of the air conditioner according to the present invention.

5 is a control block diagram of a second embodiment in the outdoor unit of the air conditioner according to the present invention;

Fig. 6 is a flowchart showing the noise reduction operation of the second embodiment of the outdoor unit of the air conditioner according to the present invention.

7 is a control block diagram of the third embodiment in the outdoor unit of the air conditioner according to the present invention;

Fig. 8 is a flowchart showing the noise reduction operation of the third embodiment of the outdoor unit of the air conditioner according to the present invention.

Claims (15)

A main body including an outdoor heat exchanger configured to exchange heat between the refrigerant and outdoor air; A fan forcing the outdoor air to pass through the outdoor heat exchanger; A fan motor for rotating the fan; And And an active noise control unit for generating sound waves having an antiphase with the noise in order to minimize noise generated by at least one of the fan and the fan motor. The outdoor unit of an air conditioner, wherein the active noise control unit is operated when it corresponds to a low noise requirement. The method of claim 1, The active noise control unit is an outdoor unit of an air conditioner, characterized in that located at a point corresponding to the discharge side of the fan. The method of claim 1, The active noise control unit, A noise detector configured to collect noise generated from at least one of the fan and the fan motor; A sound wave generator for generating sound waves having an inverse phase with respect to the noise; And And a controller configured to receive a noise signal collected by the noise detector and to transmit a signal corresponding to a sound wave corresponding to an inverse phase of the noise, to the sound wave generator. The method of claim 1, The active noise control unit, A duct surrounding the outdoor air discharged from the fan to collect noise of the fan and the fan motor; A noise control case in which the noise detector, the sound wave generator, and the controller are accommodated; The outdoor unit of the air conditioner, characterized in that it further comprises; a fixing part for fixing the noise control case to the duct. The method of claim 4, wherein The main body is provided with a discharge port for discharging the outdoor air passing through the outdoor heat exchanger to the outside of the main body, The duct is an outdoor unit of an air conditioner, characterized in that the cylindrical shape surrounding the discharge port. The method of claim 4, wherein The outdoor unit of the air conditioner on the inner surface of the duct is provided with a sound absorbing material for absorbing the noise of the fan and fan motor. The method of claim 4, wherein The noise control case is located in the center of the duct, based on a virtual plane orthogonal to the discharge direction of the outdoor air, the outdoor unit of the air conditioner. The method of claim 4, wherein The fixing unit outdoor unit of the air conditioner, characterized in that it comprises a plurality of rod-shaped connecting portion connecting the duct and the noise control case. The method of claim 4, wherein The outdoor unit of the air conditioner, characterized in that the duct is provided with a fastening portion for forming a fastening hole for passing through the fastening member for fixing the duct and the main body. The method of claim 1, The low noise requirement is an outdoor unit of an air conditioner, wherein the current time corresponds to a reference time zone. 11. The method of claim 10, The reference time zone is the outdoor unit of the air conditioner, characterized in that the time zone corresponding to after sunset and before sunrise. The method of claim 1, Further comprising an outdoor temperature sensor for sensing the temperature of the outdoor air, The low noise requirement is an outdoor unit of an air conditioner, wherein the outdoor temperature corresponds to a reference temperature or less. 13. The method of claim 12, The outdoor unit of the air conditioner, characterized in that the reference temperature is variable according to the season. The method of claim 13, An outdoor unit of an air conditioner, wherein the reference temperature in summer is higher than the reference temperature in winter. The method of claim 1, Further comprising a rotation sensor for detecting the number of revolutions per hour of the fan, The low noise requirement is an outdoor unit of an air conditioner, wherein the rotation speed per hour of the fan corresponds to a reference rotation speed or more.
KR1020090113064A 2009-11-23 2009-11-23 Outdoor unit of air conditioner KR20110056651A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101276032B1 (en) * 2011-09-07 2013-06-20 엘지전자 주식회사 An air conditioner and a control method the same
CN107781970A (en) * 2016-08-25 2018-03-09 株洲时代新材料科技股份有限公司 Sound-muffling box
CN111981570A (en) * 2020-08-11 2020-11-24 青岛海信日立空调系统有限公司 Air pipe type air conditioner indoor unit
CN115183386A (en) * 2022-06-27 2022-10-14 青岛海尔空调电子有限公司 Method and device for controlling air conditioner, air conditioner and storage medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101276032B1 (en) * 2011-09-07 2013-06-20 엘지전자 주식회사 An air conditioner and a control method the same
CN107781970A (en) * 2016-08-25 2018-03-09 株洲时代新材料科技股份有限公司 Sound-muffling box
CN111981570A (en) * 2020-08-11 2020-11-24 青岛海信日立空调系统有限公司 Air pipe type air conditioner indoor unit
CN115183386A (en) * 2022-06-27 2022-10-14 青岛海尔空调电子有限公司 Method and device for controlling air conditioner, air conditioner and storage medium

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