WO2008041627A1 - Climatiseur - Google Patents

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Publication number
WO2008041627A1
WO2008041627A1 PCT/JP2007/068939 JP2007068939W WO2008041627A1 WO 2008041627 A1 WO2008041627 A1 WO 2008041627A1 JP 2007068939 W JP2007068939 W JP 2007068939W WO 2008041627 A1 WO2008041627 A1 WO 2008041627A1
Authority
WO
WIPO (PCT)
Prior art keywords
comb
groove
tongue
shallow
deep groove
Prior art date
Application number
PCT/JP2007/068939
Other languages
English (en)
Japanese (ja)
Inventor
Kouji Satou
Minoru Honjo
Original Assignee
Daikin Industries, 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 Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Priority to CN2007800341127A priority Critical patent/CN101517321B/zh
Publication of WO2008041627A1 publication Critical patent/WO2008041627A1/fr

Links

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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • 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

Definitions

  • the present invention relates to an air conditioner using a cross flow fan, and more particularly to an indoor unit of an air conditioner.
  • a cross flow fan is often used as a blower, and in order to reduce noise generated when the cross flow fan rotates, A front tongue (stabilizer) is provided.
  • a front tongue stabilizer
  • JP-A-11 118177 Patent Document 1
  • JP-A-2005-90764 Patent Document 2
  • JP-A-2005-300133 are disclosed.
  • the ability to list a gazette Patent Document 3).
  • Patent Document 1 described above uses a crossflow fan as a blower, and provides an air introduction portion with an opening area gradually enlarged from the tongue region to the air suction region. As a result, the change in the air inflow from the tongue area to the air suction area is moderated, and the air flow around the blade at the moment the fan rotor blade moves from the tongue area to the air suction area This is intended to reduce the NZ sound.
  • Patent Document 2 a plurality of quadrangular prism-shaped concave portions that open facing the blower fan are formed on a stabilizer (tongue) that extends along the rotation direction of the blower fan that is a crossflow fan, At least one of the upstream end and the downstream end facing the opening of the recess is formed with a rounded portion that curves along the flow path axis direction.
  • the concave portion of the tongue acts as a resonance silencer, noise is suppressed, and the edge of the concave portion is a rounded portion. It is supposed to be suppressed. In addition, it is said that it has sufficient air volume performance.
  • Patent Document 3 a stabilizer (tongue) is installed near the discharge port in the casing so as to be close to the crossflow fan (crossflow fan), and a convex rib and a concave rib are provided on the tongue. Are arranged in a row. This stabilizes the unstable flow of air generated by the crossflow fan. The flow noise of the air conditioner is reduced by inducing a uniform flow velocity and pressure distribution.
  • the present invention has been provided in view of the above-mentioned problems, and provides an air conditioner having at least the following objects.
  • a heat exchanger that exchanges heat between the sucked and trapped air, a crossflow fan provided on the downstream side of the heat exchanger, and the crossflow
  • a crossflow fan provided on the downstream side of the heat exchanger, and the crossflow
  • the air conditioner comprising: a tongue portion disposed close to the fan in the axial direction; and a blowout port from which air exchanged by the rotation of the crossflow fan is blown out.
  • Comb-shaped comb-shaped portions configured by alternately arranging a plurality of comb teeth and a plurality of grooves are arranged along the longitudinal direction of the tongue portion on the tongue portion facing the fan.
  • the groove includes a deep groove having a deep depth and a shallow groove having a shallow depth
  • the comb-shaped portion includes a deep groove comb-shaped portion including the comb teeth and a deep groove, and the comb teeth and the shallow groove. It has a shallow groove comb-shaped part composed of!
  • the comb-shaped portion including the deep-groove comb-shaped portion and the shallow-groove comb-shaped portion is disposed on the tongue portion.
  • Groove deep groove and shallow groove
  • the NZ sound generation timing is shifted between the deep groove comb portion and the shallow groove comb portion, the NZ sound is dispersed, and this can also reduce the noise. In this way, a more efficient air conditioner can be provided by reducing the noise while ensuring the air volume.
  • a plurality of the deep groove comb-shaped portions are arranged in parallel to form a deep groove comb-shaped row, and a plurality of the shallow groove comb-shaped portions are arranged in parallel to form a shallow groove comb-shaped row. In particular, these are arranged on the tongue.
  • the deep groove comb-like rows have a substantially constant depth, deep groove comb-like portions are arranged at an equal pitch, and the shallow groove comb-like rows. Is characterized in that the depth of the shallow groove is substantially constant and the shallow groove comb-shaped portions are arranged at an equal pitch.
  • the deep groove comb-like rows are random, and at least one of the depth of the deep grooves and the arrangement pitch of the deep groove comb-like portions is random, and the shallow groove comb-like rows. Is characterized in that at least one of the groove depths of the shallow grooves and the arrangement pitch of the shallow groove comb-shaped portions is random.
  • the shallow groove comb-like portions are respectively arranged in the vicinity of both end portions of the tongue portion.
  • the shallow groove comb-shaped portions are arranged in the vicinity of both end portions of the tongue portion, the air volume at the shallow groove comb-shaped portions can be increased.
  • the airflow at both ends of one fan increases, and it is possible to equalize the airflow in the axial direction of the crossflow fan.
  • the shallow groove comb-shaped portion formed by shallow grooves formed at both ends of the comb-shaped portion formed on the tongue portion increases the airflow on both sides, which is also a disadvantage of the cross flow fan.
  • the airflow in the axial direction of the cross flow fan can be made uniform.
  • the deep groove comb-shaped portion is disposed further on both end sides than the shallow groove comb-shaped portion in the vicinity of both end portions of the tongue portion. .
  • both ends of the tongue are closer to both ends than the shallow groove comb-shaped portion in the vicinity of both ends. Since the deep groove comb-shaped portion is arranged, the air volume in the vicinity of the wall surface is reduced, the air volume is made uniform, and the generation of noise can be suppressed.
  • One embodiment is characterized in that the deep groove comb-like portion is arranged in a central portion of the tongue portion.
  • the airflow in the axial direction of the crossflow fan 10 can be made more uniform by slightly suppressing the airflow at the central portion where the airflow performance is originally better.
  • FIG. 1 is a partially broken perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 2 is a sectional view of the indoor unit in the embodiment of the present invention.
  • FIG. 3 is an enlarged perspective view of part A in FIG. 1 in the embodiment of the present invention.
  • FIG. 4 (a) and (b) are a front view and a rear view of the tongue in the embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along the line BB in FIG. 4 (b) in the embodiment of the present invention.
  • FIG. 6 is an explanatory diagram for explaining a deep groove and a shallow groove of the comb-like portion in the embodiment of the present invention.
  • FIG. 7 (a) is a schematic diagram of a crossflow fan, (b) is an explanatory diagram showing the airflow distribution of the crossflow fan on a conventional tongue, and (c) is a tongue according to an embodiment of the present invention. It is explanatory drawing which shows the airflow distribution of the cross fan mouth in 1 fan.
  • FIG. 1 shows a partially broken perspective view of the indoor unit 1 of the air conditioner
  • FIG. 2 shows a cross-sectional view of the indoor unit 1.
  • a front grille 3 and a front panel 4 are respectively attached to the front side of the main body casing 2 constituting the outer shell of the indoor unit 1, and a blowout port 5 is provided at a part of the lower corner of the front side. Is provided.
  • suction air is supplied to the outlet 5 inside the main casing 2.
  • An air flow path 7 is provided to circulate, and an indoor heat exchanger 6 having an inverted V-shaped cross section is disposed upstream of the air flow path 7.
  • an indoor heat exchanger 6 having an inverted V-shaped cross section is disposed upstream of the air flow path 7.
  • a cross flow fan 10 On the downstream side of the indoor heat exchanger 6, a cross flow fan 10, a tongue portion 11 and a rear guide portion 12 are provided in this order.
  • Cross fan 1 The fan rotor 10a of the single fan 10 is rotatably arranged in FIG. 2, and is located near the fan rotor 10a of the cross flow fan 10 and above the outlet 5.
  • the long tongue portion 11 is provided along the axial direction of the cross flow fan 10. That is, the tongue 11 is disposed between the lower end portion (portion 5 side portion) of the indoor heat exchanger 6 located on the front side of the casing 2 and the cross flow fan 10.
  • an air flow guide portion 13 that also serves as a drain pan is continuously provided below the tongue portion 11, and this air flow guide portion 13 is blown from the fan rotor 10 a of the cross flow fan 10.
  • An air outlet passage 14 is formed toward the outlet 5 together with the rear guide portion 12 so that the discharged air flow is efficiently blown out from the outlet 5.
  • a wind direction changing plate 15 is provided on the opening surface of the outlet 5 so as to be rotatable about a shaft 16.
  • an air flow is formed by blowing the air sucked from the front side through the blowout port 5 by the operation of the cross flow fan 10.
  • the rotation of the fan rotor 10a of the cross flow fan 10 and the action of the tongue 11 provided in the vicinity of the fan produce an eccentric vortex having a vortex center inside the fan rotor 10a.
  • the air flow crossing in the diameter direction flows out to the outlet 5. Then, after the heat exchange of the intake air by the heat exchanger 6 is performed by this air flow, the air is blown from the outlet 5 into the room!
  • FIG. 3 shows an enlarged perspective view of the tongue portion 11 of the A portion in FIG. 1
  • FIG. 4 (a) shows a front view of the tongue portion 11, and (b) shows a rear view.
  • FIG. 5 shows a cross-sectional view along the line BB in FIG. 4 (b).
  • a comb-like portion 20 is connected to the front portion of the tongue 11 facing the surface of the fan rotor 10 a of the crossflow fan 10 over substantially the entire length along its longitudinal direction. Is formed.
  • the comb-shaped portion 20 is configured by alternately arranging comb teeth 21 and grooves 22 at predetermined intervals.
  • the groove 22 is formed by the surfaces of two adjacent comb teeth 21 facing each other and the surface of the tongue portion 11 existing between these facing surfaces.
  • the tip of the comb tooth 21 is smoothly curved and cross-flow fan fan low
  • the bottom surface 221 of the groove 22 (the surface of the tongue 11 existing between the adjacent comb teeth 21) is similarly smoothly curved to the fan rotor side of the crossflow fan. It has a shape that protrudes toward the back (see Fig. 5).
  • the amount of protrusion of the comb teeth 21 in the normal direction from the bottom surface 221 of the groove 22 is such that the tip ends 21a of the comb teeth 21 have a smooth curved shape, and the both sides in the vertical direction are the largest at the tip ends 21a of the comb teeth.
  • the “depth” of the groove means the “projection amount” of the comb tooth 21 from the groove bottom surface 221.
  • the distinction between the deep groove 22a and the shallow groove 22b is respectively The other part of the force applied based on the “projection amount” at the most projecting part of the corresponding comb tooth 21 may be used as a reference.
  • a deep groove 22a having a deeper depth and a shallow groove 22b having a shallower depth than the deep groove 22a are provided as the groove 22a.
  • the deep grooves 22a and the comb teeth 21 are juxtaposed to form the deep groove comb-shaped portion 20a, and the pair of shallow grooves 22b and the comb teeth 21 are juxtaposed to form the shallow groove comb-shaped portion 20b.
  • a predetermined number of deep groove comb-shaped portions 20a are arranged in parallel to form a deep groove comb-shaped row 20A, and a plurality of shallow groove comb-shaped portions 20b are arranged in parallel to form a predetermined number of shallow groove comb-shaped rows 20B. Is forming.
  • the depths of the deep groove 22a and the shallow groove 22b are substantially constant, and the deep groove comb portion 20a and the shallow groove comb portion 20b Are arranged at equal pitches.
  • the deep groove comb rows 20A and the shallow groove comb rows 20B are alternately arranged to form the comb portion 20.
  • a deep groove comb-like row 20A is provided at the center of the comb-like portion 20 of the tongue 11, and shallow groove comb-like rows 20B are provided on both sides of the deep groove comb-like row 20A.
  • deep groove comb rows 20A are provided at both ends of the tongue 11 following these shallow groove comb rows 20B.
  • the air volume increases as the depth of each groove 22 of the comb-shaped portion 20 decreases, and conversely, the air volume decreases as the depth of the groove 22 increases.
  • the deep groove comb rows 20A are arranged at both ends of the tongue 11, and the shallow groove comb rows 20B are arranged close to each other, thereby causing noise generation. It is possible to improve the air flow reduction on both sides.
  • 7 (a) shows the cross flow fan 10
  • FIG. 7 (b) shows the air flow distribution of the cross flow fan on the conventional tongue.
  • the deep groove comb-like rows 20A are arranged at both ends of the tongue 11, and the shallow groove comb-like rows 20B are arranged in the vicinity thereof, so that the air volume is increased in each of these comb-like rows 20A and 20B. Therefore, as shown in Fig.
  • the airflow at both ends of the crossflow fan 10 increases as shown by the shaded area, and the airflow in the axial direction of the crossflow fan 10 is made uniform.
  • Power S can be. That is, in the conventional type (a normal tongue portion having a uniform cross-sectional shape over almost the entire length without a groove), the position closer to both ends than the portion X where the airflow is significantly reduced due to the presence of the wall surface Further, by arranging the shallow groove comb-like rows 20B, it becomes possible to increase the air volume as described above. Note that the deep groove comb row 20A is provided at both ends because the increase in the air flow cannot be expected even if the shallow groove comb row 20B is provided in the portion close to the wall surface, rather it causes noise generation. is there.
  • the airflow on both sides which is also a drawback of the crossflow fan 10
  • the shallow groove comb-like row 20B composed of the shallow grooves 22b in the vicinity of both ends of the comb-like portion 20 formed on the tongue portion 11.
  • the air volume can be made uniform.
  • the deep groove comb-like rows 20A are arranged in the central portion of the tongue 11, and the shallow groove comb-like rows 20B are arranged on both sides thereof, the feeding of the central portion where the air blowing performance is better than the original.
  • the airflow can be suppressed somewhat, and the airflow in the axial direction of the crossflow fan 10 can be made more uniform.
  • the rectifying action by both the comb-like rows 20A and 20B works, and the air volume blown from the outlet 5 can be made uniform.
  • the comb-shaped comb-shaped portion 20 (deep groove comb-shaped portion 20a and shallow-groove comb-shaped portion 20b) formed in the tongue 11 causes the grooves 22 of the comb-shaped portion 20 (the deep grooves 22a and the shallow grooves 22b).
  • the air flow can be prevented from vortexing the return air of the cross flow fan 10, and fragmentary noise due to vortexing can be reduced.
  • noise during driving such as at midnight can be reduced, and a more comfortable space can be provided.
  • the NZ sound generation timing is shifted between the deep groove comb-shaped portion 20a and the shallow groove comb-shaped portion 20b, the NZ sound is dispersed, and this can also reduce the noise. In this way, a more efficient air conditioner can be provided by reducing the noise while ensuring the air volume.
  • the arrangement of the deep groove comb-shaped portion 20a and the shallow groove comb-shaped portion 20b in the comb-shaped portion 20 of the tongue 11 is not limited to that shown in Fig. 4 (a).
  • the length of the row 20B is shortened, and a larger number of deep groove comb rows 20A and shallow groove comb rows 20B than the illustrated example are arranged alternately. Also good.
  • each of the deep groove comb-like row 20A and the shallow groove comb-like row 20B the groove depths of the deep groove 22a and the shallow groove 22b and the arrangement pitch of the deep groove comb-like portion 20a and the shallow groove comb-like portion 20b In this case, either one or both of them may be randomized, and the same effect as described above can be obtained. Furthermore, the deep groove comb-shaped row 20A and the shallow groove comb-shaped row 20B are not provided, and the deep groove comb-shaped portion 20a and the shallow groove comb-shaped portion 20b may be mixed at random. The noise reduction effect can be achieved. At this time, the pitch between the comb teeth 21 and the grooves 22 and the depths of the deep grooves 22a and the shallow grooves 22b of the comb-shaped portion 20 may be random.

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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)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Flow Control Members (AREA)

Abstract

L'invention concerne un climatiseur présentant un échangeur thermique, un ventilateur tangentiel, une section de languette (11) et une ouverture de sortie, afin de réduire le bruit au moyen d'un débit d'air suffisant. Une section en forme de peigne (20), formée par l'agencement alterné de dents de peigne (21) et de rainures (22), est placée dans la section de languette (11), face au ventilateur tangentiel, le long de la direction longitudinale de la section de languette (11). Les rainures (22) comprennent des rainures profondes (22a) et des rainures superficielles (22b). La section en forme de peigne (20) présente une section en forme de peigne à rainures profondes (20a), construite à partir des dents de peigne (21) et des rainures profondes (22a), et une section en forme de peigne à rainures superficielles (20b), construite à partir des dents de peigne (21) et des rainures superficielles (22b).
PCT/JP2007/068939 2006-09-29 2007-09-28 Climatiseur WO2008041627A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007800341127A CN101517321B (zh) 2006-09-29 2007-09-28 空调机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006267787A JP4187032B2 (ja) 2006-09-29 2006-09-29 空気調和機
JP2006-267787 2006-09-29

Publications (1)

Publication Number Publication Date
WO2008041627A1 true WO2008041627A1 (fr) 2008-04-10

Family

ID=39268486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/068939 WO2008041627A1 (fr) 2006-09-29 2007-09-28 Climatiseur

Country Status (3)

Country Link
JP (1) JP4187032B2 (fr)
CN (1) CN101517321B (fr)
WO (1) WO2008041627A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106907351A (zh) * 2017-04-26 2017-06-30 广东美的制冷设备有限公司 蜗壳、风机及空调器
CN109307319A (zh) * 2018-11-16 2019-02-05 广东美的制冷设备有限公司 空调室内机和空调器

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014095496A (ja) * 2012-11-08 2014-05-22 Panasonic Corp 空気調和機の室内機
CN104074803B (zh) * 2013-03-26 2017-02-08 珠海格力电器股份有限公司 贯流风机及具有其的空调器
CN105115124B (zh) * 2015-09-25 2018-06-01 广东美的制冷设备有限公司 挂壁式空调器
KR20210062846A (ko) 2019-11-22 2021-06-01 삼성전자주식회사 공기조화기
TWM611567U (zh) 2020-09-14 2021-05-11 楊俊彥 可向土壤注入氣體以提供植物根部呼吸之結構
CN215490035U (zh) * 2021-07-07 2022-01-11 广东美的暖通设备有限公司 风机组件和空调器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11118177A (ja) * 1997-10-14 1999-04-30 Daikin Ind Ltd 空気調和機

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Publication number Priority date Publication date Assignee Title
JP2005090764A (ja) * 2003-09-12 2005-04-07 Matsushita Electric Ind Co Ltd 空気調和機の室内ユニット
KR101116675B1 (ko) * 2004-04-08 2012-03-07 삼성전자주식회사 공기조화기
JP2007120880A (ja) * 2005-10-28 2007-05-17 Mitsubishi Electric Corp クロスフローファン

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11118177A (ja) * 1997-10-14 1999-04-30 Daikin Ind Ltd 空気調和機

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106907351A (zh) * 2017-04-26 2017-06-30 广东美的制冷设备有限公司 蜗壳、风机及空调器
CN109307319A (zh) * 2018-11-16 2019-02-05 广东美的制冷设备有限公司 空调室内机和空调器
WO2020098406A1 (fr) * 2018-11-16 2020-05-22 广东美的制冷设备有限公司 Unité intérieure de climatiseur et climatiseur

Also Published As

Publication number Publication date
CN101517321B (zh) 2011-09-28
JP4187032B2 (ja) 2008-11-26
JP2008089205A (ja) 2008-04-17
CN101517321A (zh) 2009-08-26

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