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WO2022149773A1 - Climatiseur - Google Patents

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Publication number
WO2022149773A1
WO2022149773A1 PCT/KR2021/019775 KR2021019775W WO2022149773A1 WO 2022149773 A1 WO2022149773 A1 WO 2022149773A1 KR 2021019775 W KR2021019775 W KR 2021019775W WO 2022149773 A1 WO2022149773 A1 WO 2022149773A1
Authority
WO
WIPO (PCT)
Prior art keywords
noise reduction
reduction device
air conditioner
side branch
ventilation hole
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.)
Ceased
Application number
PCT/KR2021/019775
Other languages
English (en)
Korean (ko)
Inventor
이영준
김승엽
정재은
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of WO2022149773A1 publication Critical patent/WO2022149773A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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
    • F24F2013/245—Means for preventing or suppressing noise using resonance

Definitions

  • the present invention relates to an air conditioner, and more particularly, to an air conditioner having a noise reduction structure.
  • an air conditioner is a device for cooling a room or lowering humidity by using a refrigeration cycle consisting of a compressor, a condenser, an expansion valve, and an evaporator.
  • the air conditioner may include an outdoor unit that cools the refrigerant and sends it to the room, and an indoor unit that is connected to the outdoor unit through a pipe to receive the refrigerant and discharge air cooled by the refrigerant into the room.
  • the air conditioner installs an indoor unit in a room where a user mainly stays, and blows air into the room through the indoor unit. Therefore, it is important to control changes in the wind direction, speed, and airflow of the air blown out from the indoor unit so that the user can feel comfortable.
  • the indoor unit of the air conditioner It is common for the indoor unit of the air conditioner to generate relatively less noise than the outdoor unit. However, the noise generated by the indoor unit of the air conditioner can be directly heard by the user in daily life.
  • An object of the present invention is to provide an air conditioner having a structure capable of effectively reducing noise.
  • Another object of the present invention is to provide an air conditioner equipped with a noise reduction device that is mounted on an indoor unit of an air conditioner and can effectively reduce noise generated by a blowing fan of the indoor unit.
  • An embodiment of the air conditioner includes a blowing fan having a first inlet and a first outlet through which air flows, a heat exchanger disposed in a flow path of air flowing through the first outlet, and disposed between the blowing fan and the heat exchanger It may include a noise reduction device.
  • the noise reduction device may include a ventilation hole communicating with the first outlet, and a side branch having a structure in which one end communicates with the ventilation hole and the other end is closed.
  • the noise reduction device may include a second inlet for communicating the vent and the side branch, and the second inlet may be formed in a direction crossing the flow direction of air in the vent.
  • the side branch may include at least one bent part.
  • a plurality of side branches may be provided, the second inlet may be provided in the same number as the number of side branches, and the plurality of side branches may be disposed on both sides of the ventilation hole.
  • the noise reduction device includes a ventilation hole and an upper plate forming the outer shape of the noise reduction device, and is provided on the lower portion of the upper plate, the ventilation hole and the lower plate forming the outer shape of the noise reduction device, the upper plate is combined with the upper plate at the upper end, and the lower plate is combined with the lower plate, the ventilation hole and a side plate forming the outer shape of the noise reduction device, and a partition plate coupled to the upper plate and the lower plate, provided to be surrounded by the side plate, and partitioning each of the plurality of side branches.
  • At least one of the plurality of side branches is provided to have two bent portions
  • the partition plate may be formed to partition the side branch so that the side branch has two bent portions.
  • the partition plate may be provided to have a bent portion, and the side branch may be formed to have at least one bent portion.
  • Another embodiment of the air conditioner includes a blowing fan having a first inlet and a first outlet through which air flows, a heat exchanger disposed in a flow path of air flowing through the first outlet, and disposed between the blowing fan and the heat exchanger
  • a noise reduction device comprising: a vent communicating with the first outlet, a side branch having a structure in which one end communicates with the vent and the other end is closed; A lower plate provided on the lower part of the upper plate and forming the appearance of the ventilation hole and the noise reduction device, the side plate that combines with the upper plate at the upper end and the lower plate at the lower end, and forms the outer shape of the ventilation hole and the noise reduction device, and the upper plate and the lower plate And, it is provided to be surrounded by the side plate, it may include a partition plate for partitioning each of the plurality of side branches.
  • a plurality of side branches may be provided, and the partition plate may be provided to have a bent portion, and the side branch may be formed to have at least one bent portion.
  • the noise reduction device is provided in an indoor unit of an air conditioner, has a simple structure, and has a relatively small volume, so that it is possible to effectively reduce noise generated in the indoor unit while increasing the space efficiency of the air conditioner.
  • the air conditioner according to the present invention by reducing the volume occupied by the side branch by forming the bent portion in the side branch, the space occupied by the noise reduction device in the indoor unit of the air conditioner can be effectively reduced even if the side branch is formed to be relatively long.
  • the air conditioner according to the present invention by forming two bent portions in the side branch, the space occupied by the side branch is further reduced, and as a result, the space occupied by the noise reduction device in the indoor unit of the air conditioner can be more effectively reduced.
  • FIG. 1 is a perspective view illustrating an indoor unit of an air conditioner according to an exemplary embodiment.
  • FIG. 2 is a bottom view illustrating an indoor unit of an air conditioner according to an exemplary embodiment.
  • FIG. 3 is a view in which the upper panel is omitted from FIG. 1 .
  • FIG. 4 is a cross-sectional view of FIG. 1 .
  • FIG. 5 is a perspective view illustrating a noise reduction device according to an embodiment.
  • FIG. 6 is a plan cross-sectional view of a noise reduction device according to an embodiment.
  • FIG. 7 is a front view of a noise reduction device according to an embodiment.
  • first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, the first component may be the second component, of course.
  • FIG. 1 is a perspective view illustrating an indoor unit of an air conditioner according to an exemplary embodiment.
  • 2 is a bottom view illustrating an indoor unit of an air conditioner according to an exemplary embodiment.
  • FIG. 3 is a view in which the upper panel 2 is omitted from FIG. 1 .
  • FIG. 4 is a cross-sectional view of FIG. 1 .
  • the air conditioner according to the embodiment may include an outdoor unit and an indoor unit.
  • the outdoor unit may cool the refrigerant and transfer the cooled refrigerant to the indoor unit.
  • the indoor unit may be disposed in a room that is a cooling space, and may cool the room by using the received refrigerant.
  • the combination of the outdoor unit, the indoor unit, and a pipe connecting them and flowing a refrigerant may constitute one thermodynamic refrigeration cycle.
  • the indoor unit of the air conditioner according to the embodiment may be installed, for example, on a ceiling of the room, and may include a blowing fan 10 and a heat exchanger 20 .
  • a blowing fan 10 and a heat exchanger 20 .
  • an upper panel (2), a lower panel (3), and a side panel connecting the upper panel (2) and the lower panel (3) are combined with each other to form an inner space, and a blower fan (10) is formed in the inner space , parts such as the heat exchanger 20 may be built-in.
  • the blowing fan 10 may forcibly flow the air in the room toward the heat exchanger 20 .
  • the heat exchanger 20 includes a tube, and a cooled refrigerant may flow in the tube.
  • the air passing through the heat exchanger 20 is cooled by exchanging heat with the cooled refrigerant flowing in the tube, and the cooled air is discharged from the indoor unit into the room to cool the room.
  • the blowing fan 10 may be provided as, for example, a sirocco fan suitable for transferring a large amount of air.
  • the present invention is not limited thereto.
  • the blowing fan 10 may be provided with a first inlet 11 and a first outlet 12 through which air flows. Air may be introduced into the first inlet 11 of the blowing fan 10 , be blown by the fan and discharged through the first outlet 12 .
  • the heat exchanger 20 may be disposed in a flow path of air flowing through the first outlet 12 . In this case, heat exchange may occur between the refrigerant flowing through the tube of the heat exchanger 20 and the air flowing through the outside of the heat exchanger 20 .
  • the noise reduction device 30 may be provided in the indoor unit of the air conditioner according to the embodiment.
  • the noise reduction device may be disposed in an inner space of the indoor unit formed by the upper panel 2 and the lower panel 3 .
  • the noise reduction device 30 may be detachably coupled to the inside of the indoor unit of the air conditioner by a coupling mechanism such as a bolt, or may be fixedly coupled with an adhesive or the like.
  • An indoor unit of the air conditioner according to the embodiment may include a blowing fan 10 , and the blowing fan 10 may include a fan forcibly flowing air and a motor rotating the fan. Noise may be generated by the fan and the motor, and such noise may cause discomfort to the user.
  • the noise reducing device 30 by mounting the noise reducing device 30 to the indoor unit of the air conditioner, a structure for reducing noise generated by the blowing fan 10 is provided.
  • the noise reduction device 30 may be provided in the form of a side branch 200 (side branch).
  • the side branch 200 may have a shape including a narrow and long sound wave canceling space in which one side is blocked. Therefore, when a sound wave is introduced into the sound wave offset space of the side branch 200, the side branch 200 absorbs a specific frequency of the sound wave and resonates while canceling the sound wave through the interference phenomenon of the sound wave to reduce noise.
  • the side branch 200 has a resonant frequency, and may cancel a frequency of a sound wave that is the same as the resonant frequency and a frequency of a sound wave that reacts with the resonant frequency.
  • the resonant frequency of the side branch 200 may vary depending on the volume and length of the sound wave cancellation space of the side branch 200 . Therefore, in order to make a desired frequency to be reduced in noise having various frequency bands, that is, a resonant frequency of the side branch 200 that matches the target frequency, the volume and length of the side branch 200 may be appropriately selected.
  • the noise reduction device 30 may be provided to communicate with the first outlet 12 of the blowing fan 10 . Therefore, it is possible to reduce the noise propagated by the air discharged from the blower fan 10 .
  • each noise reduction device 30 includes a first outlet ( plural) provided in the blowing fan 10 . 12) It may be provided to communicate with each.
  • the number of the noise reduction devices 30 may be determined in consideration of both the noise reduction effect and the power consumption of the blowing fan 10 .
  • the noise reduction device 30 may be disposed between the blowing fan 10 and the heat exchanger 20 . Accordingly, the air discharged to the blowing fan 10 may be discharged in the direction of the heat exchanger 20 through the noise reduction device 30 .
  • the noise propagated on the air passing through the noise reduction device 30 is effectively reduced in size by the noise reduction device 30 so that the indoor unit of the air conditioner can be quiet.
  • the noise reduction device 30 can reduce the noise of sound waves propagating to the side branch 200 irrespective of the flow of air.
  • the noise reduction device 30 may include a ventilation hole 100 and a side branch 200 .
  • the ventilation hole 100 communicates with the first outlet 12 , and the air forced to flow through the ventilation hole 100 may pass through the noise reduction device 30 .
  • the side branch 200 may have a structure in which one end communicates with the ventilation hole 100 and the other end is closed. As described above, the size of the sound wave entering the side branch 200 may be reduced due to the interference phenomenon.
  • the noise reduction device 30 is provided in the indoor unit of the air conditioner, has a simple structure, and has a relatively small volume, so that it is possible to effectively reduce noise generated in the indoor unit while increasing the space efficiency of the air conditioner.
  • FIG. 5 is a perspective view illustrating a noise reduction device 30 according to an embodiment.
  • 6 is a plan cross-sectional view of the noise reduction device 30 according to an embodiment.
  • 7 is a front view of the noise reduction device 30 according to an embodiment.
  • the noise reduction device 30 may include a second inlet 300 for communicating the ventilation hole 100 and the side branch 200 .
  • the side branch 200 may have a structure in which one end is opened by the second inlet 300 and the other end is closed.
  • the second inlet 300 may be formed in a direction crossing the flow direction of air in the ventilation hole 100 . Due to this structure, the noise reduction device 30 can effectively reduce the noise generated by the blowing fan 10 without interfering with the flow of air passing through the ventilation hole 100 of the noise reduction device 30 . have.
  • the side branch 200 may include at least one bent part 210 .
  • the side branch 200 needs to have a set length.
  • the noise reduction device 30 as a whole may become large, and thus the volumetric efficiency of the indoor unit may decrease.
  • the noise reduction device 30 is installed in the indoor unit of the air conditioner even when the side branch 200 is formed relatively long. It can effectively reduce the space occupied.
  • the bent portion 210 is, for example, as shown in FIG. 6, the longitudinal direction of the front portion of the noise reduction device 30, that is, a ventilation hole through which the air forced to flow from the noise reduction device 30 is discharged ( 100) may be disposed in the exit direction.
  • the bent portion 210 is disposed in the longitudinal direction of the rear portion of the noise reduction device 30 , that is, in the inlet direction of the ventilation hole 100 through which air forced to flow into the noise reduction device 30 is introduced. It might be
  • the side branches 200 are provided in plurality, and the second inlet 300 may be provided in the same number as the number of the side branches 200 . have.
  • the plurality of side branches 200 may be disposed on both sides of the ventilation hole 100 .
  • the noise reduction device 30 may have a structure in which the ventilation hole 100 through which the forced-flowing air passes is formed in the center, and a plurality of side branches 200 are disposed on both sides of the ventilation hole 100 .
  • the noise reduction device 30 may include an upper plate 31 , a lower plate 32 , a side plate 33 , and a partition plate 34 .
  • the noise reduction device 30 may be manufactured as a single unit by, for example, injection molding.
  • the noise reduction device 30 may be formed of a material that is easily injection molded, for example, a plastic material such as acrylic resin, but is not limited thereto.
  • the upper plate 31 is provided on the upper portion of the noise reduction device 30 , and may form the outer shape of the ventilation hole 100 and the noise reduction device 30 .
  • the lower plate 32 is provided under the upper plate 31 of the noise reduction device 30 , and may form the outer shape of the ventilation hole 100 and the noise reduction device 30 .
  • the side plate 33 may be coupled with the upper plate 31 at the upper end and the lower plate 32 at the lower end, and may form the outer shape of the ventilation hole 100 and the noise reduction device 30 .
  • the side plates 33 are provided on both sides of the noise reduction device 30 , respectively, and may form accommodation spaces on both sides of the ventilation holes 100 .
  • a plurality of side branches 200 may be disposed in the accommodating space.
  • At this time, at least one of the plurality of side branches 200 disposed on both sides of the ventilation hole 100 may be provided with a different length and volume from the other.
  • all of the plurality of side branches 200 disposed on both sides of the ventilation hole 100 may be provided with different lengths and volumes.
  • the plurality of side branches 200 may have different resonant frequencies, and thus the noise may be reduced in various frequency bands of noise.
  • the partition plate 34 is coupled to the upper plate 31 and the lower plate 32 , is provided to be surrounded by the side plate 33 , and may partition each of the plurality of side branches 200 .
  • the partition plate 34 may be provided to have at least one bent portion, and the side branch 200 may be formed to have at least one bent portion 210 .
  • At least one of the plurality of side branches 200 may be provided to have two bent portions 210 .
  • the partition plate 34 may partition the side branch 200 so that the side branch 200 has two bent portions 210 .
  • the side branch 200 may include a first part 210a disposed in a bent direction with respect to the second inlet 300 and a second part 210a disposed in a bent direction with respect to the first part 210a. It is provided as a part 210b and may be provided to have two bent portions 210 .
  • the space for arranging the side branches 200 may be insufficient, or the side branches 200 may become excessively long so that the noise reduction device 30 as a whole may become large.
  • the space occupied by the side branch 200 can be effectively reduced.
  • the space occupied by the side branch 200 is further reduced, as a result, the space occupied by the noise reduction device 30 in the indoor unit of the air conditioner more effectively can be reduced
  • the noise reduction device 30 having the side branch 200 according to the embodiment has a relatively simple structure, does not require electric power, has a relatively small size, and very effectively reduces noise generated from the indoor unit of the air conditioner. can do.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

Un mode de réalisation d'un climatiseur peut comporter : un ventilateur de soufflante d'air doté d'une première entrée et d'une première sortie à travers lesquelles s'écoule de l'air ; un échangeur de chaleur situé sur le trajet d'écoulement de l'air qui s'écoule à travers la première sortie ; et un dispositif de réduction de bruit situé entre le ventilateur de soufflante d'air et l'échangeur de chaleur. Le dispositif de réduction de bruit peut comporter : un évent d'air communiquant avec la première sortie ; et une ramification latérale présentant une structure dans laquelle une extrémité communique avec l'évent d'air et l'autre extrémité est fermée.
PCT/KR2021/019775 2021-01-06 2021-12-23 Climatiseur Ceased WO2022149773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0001631 2021-01-06
KR1020210001631A KR102541596B1 (ko) 2021-01-06 2021-01-06 에어컨

Publications (1)

Publication Number Publication Date
WO2022149773A1 true WO2022149773A1 (fr) 2022-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2021/019775 Ceased WO2022149773A1 (fr) 2021-01-06 2021-12-23 Climatiseur

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KR (1) KR102541596B1 (fr)
WO (1) WO2022149773A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240149544A (ko) * 2023-04-06 2024-10-15 엘지전자 주식회사 에어컨의 실내기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02102313A (ja) * 1988-10-11 1990-04-13 Sankyo Kogyo Kk チャンバーの消音装置
KR200378384Y1 (ko) * 2004-12-27 2005-03-16 이승주 소음쳄버
JP2005344956A (ja) * 2004-06-01 2005-12-15 Univ Kanagawa 消音換気口
WO2018003103A1 (fr) * 2016-06-30 2018-01-04 三菱電機株式会社 Climatiseur, dispositif de climatisation, et dispositif à cycle de réfrigération
JP2019133123A (ja) * 2017-07-05 2019-08-08 富士フイルム株式会社 消音システム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019056516A (ja) * 2017-09-21 2019-04-11 富士フイルム株式会社 消音システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02102313A (ja) * 1988-10-11 1990-04-13 Sankyo Kogyo Kk チャンバーの消音装置
JP2005344956A (ja) * 2004-06-01 2005-12-15 Univ Kanagawa 消音換気口
KR200378384Y1 (ko) * 2004-12-27 2005-03-16 이승주 소음쳄버
WO2018003103A1 (fr) * 2016-06-30 2018-01-04 三菱電機株式会社 Climatiseur, dispositif de climatisation, et dispositif à cycle de réfrigération
JP2019133123A (ja) * 2017-07-05 2019-08-08 富士フイルム株式会社 消音システム

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Publication number Publication date
KR102541596B1 (ko) 2023-06-07
KR20220099420A (ko) 2022-07-13

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