WO2018216359A1 - Indoor unit for air conditioner - Google Patents

Indoor unit for air conditioner Download PDF

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Publication number
WO2018216359A1
WO2018216359A1 PCT/JP2018/014253 JP2018014253W WO2018216359A1 WO 2018216359 A1 WO2018216359 A1 WO 2018216359A1 JP 2018014253 W JP2018014253 W JP 2018014253W WO 2018216359 A1 WO2018216359 A1 WO 2018216359A1
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WO
WIPO (PCT)
Prior art keywords
indoor unit
heat exchanger
partition
air conditioner
centrifugal fan
Prior art date
Application number
PCT/JP2018/014253
Other languages
French (fr)
Japanese (ja)
Inventor
康弘 大石
大佑 深堀
弘和 土居
Original Assignee
ダイキン工業株式会社
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 ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN201880031408.1A priority Critical patent/CN110637200B/en
Priority to EP18805303.7A priority patent/EP3614063B1/en
Priority to AU2018272237A priority patent/AU2018272237B2/en
Publication of WO2018216359A1 publication Critical patent/WO2018216359A1/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
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • 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
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • 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
    • F24F13/30—Arrangement or mounting of heat-exchangers

Definitions

  • This invention relates to an indoor unit of an air conditioner.
  • a U-shaped heat exchanger As an indoor unit of an air conditioner, a U-shaped heat exchanger is provided, the opening of the heat exchanger is covered with a partition part, and sucked by a turbo fan surrounded by the heat exchanger and the partition part. There is one that blows air in two directions through a heat exchanger (see, for example, JP-A-2015-81692 (Patent Document 1)).
  • a part that protrudes toward the turbo fan is provided in the partition part to make the air flow to the two-way outlet uniform.
  • the center of the turbo fan is located on the center line of the heat exchanger and the casing body, and the heat exchanger and the partition are symmetrically shaped.
  • the heat exchanger and the partition are symmetrically shaped.
  • the subject of this invention is providing the indoor unit of the air conditioner which can reduce the pressure of the high voltage
  • An indoor unit of an air conditioner is A casing, A centrifugal fan disposed in the casing and rotating in a predetermined rotation direction; A heat exchanger disposed in the casing and around the centrifugal fan; A partition that encloses the centrifugal fan together with the heat exchanger by connecting both ends of the heat exchanger; The center of the centrifugal fan is located on the upstream side in the air flow direction between the centrifugal fan and the partition with respect to a vertical bisector connecting a line connecting both ends of the partition. .
  • the center of the centrifugal fan that rotates in the predetermined rotation direction is upstream in the air flow direction between the centrifugal fan and the partition with respect to the vertical bisector connecting the both ends of the partition.
  • the gap between the downstream end of the partition covering the opening of the heat exchanger and the outer periphery of the centrifugal fan is wider than the gap between the upstream end and the outer periphery of the centrifugal fan. .
  • the pressure in the vicinity of the downstream end of the partition where large abnormal noise is generated decreases, so that the pressure in the high pressure section generated at the end of the partition covering the opening of the heat exchanger can be reduced. Can be suppressed.
  • the blower outlet was provided in the opposite side to the said partition part with respect to the said heat exchanger of the said casing.
  • the blowing air from a centrifugal fan blows off smoothly from a blower outlet via a heat exchanger by providing a blower outlet on the opposite side to a partition part with respect to the heat exchanger of a casing. Can do.
  • the partition portion bulges outward from a line segment connecting both ends in plan view, A part of the centrifugal fan is overlapped with an area surrounded by the line segment connecting both ends of the partition part and the partition part.
  • the partition portion bulges outward from the line segment connecting both ends of the partition portion in plan view, and the region surrounded by the line segment connecting the both ends of the partition portion and the partition portion.
  • the centrifugal fan rotates along the partition part curved so as to bulge outward, and the partition part smoothly guides the air blown from the centrifugal fan.
  • the storage space inside can be reduced.
  • the heat exchanger in the indoor unit of the air conditioner of one embodiment, includes a first heat exchange unit, a second heat exchange unit located upstream of the first heat exchange unit in the rotational direction of the centrifugal fan, and the first heat exchange unit.
  • a third heat exchanging part located on the downstream side in the rotational direction of the centrifugal fan, The third heat exchange unit is shorter than the second heat exchange unit.
  • the third heat exchange unit located on the downstream side in the rotation direction of the centrifugal fan of the first heat exchange unit is located on the upstream side in the rotation direction of the centrifugal fan of the first heat exchange unit.
  • a pipe connection part can be provided at the end of the third heat exchange part, and a space for the connection pipe can be secured in the casing.
  • the clearance gap between the downstream edge part of a partition part and the outer periphery of a centrifugal fan is set to the upstream edge part of a partition part. It becomes possible to make it wider than the gap between the part and the outer periphery of the centrifugal fan.
  • the center of the centrifugal fan rotating in the predetermined rotational direction is in the vertical bisector connecting the both ends of the partition part, and the centrifugal fan and the partition part are By arranging the centrifugal fan so that it is located upstream in the airflow direction between the two, the pressure of the high pressure part generated at the end of the partition that covers the opening of the heat exchanger can be reduced, and the generation of abnormal noise It is possible to realize an indoor unit of an air conditioner that can suppress the above.
  • FIG. 1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment of the present invention viewed obliquely from below.
  • FIG. 2 is a perspective view of the indoor unit as viewed obliquely from above.
  • FIG. 3 is a bottom view of the indoor unit. 4 is a cross-sectional view taken along line IV-IV in FIG.
  • FIG. 5 is a bottom view showing a state in which the panel and drain pan of the indoor unit are removed.
  • FIG. 6 is a diagram showing the center position of the turbo fan of the indoor unit.
  • FIG. 7 is a view showing the center position of the turbo fan of the indoor unit.
  • FIG. 8 is a bottom view showing a state where a flap is attached to the indoor unit of FIG.
  • FIG. 1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment of the present invention viewed obliquely from below.
  • FIG. 2 is a perspective view of the indoor unit as viewed obliquely from
  • FIG. 9 is a bottom view showing a state where the flap of the indoor unit is removed.
  • FIG. 10 is a view showing the pressure distribution of the indoor unit of the indoor unit of the first embodiment.
  • FIG. 11 is a diagram showing the pressure distribution as seen from the line XI-XI in FIG.
  • FIG. 12 is a bottom view showing a state in which the panel and drain pan of the indoor unit of the air conditioner according to the second embodiment of the present invention are removed.
  • FIG. 1 has shown the perspective view which looked at the indoor unit of the air conditioner of 1st Embodiment of this invention from diagonally downward.
  • This indoor unit is a ceiling-embedded indoor unit.
  • the indoor unit of the air conditioner of the first embodiment is detachably attached to the casing body 1, a rectangular panel 2 attached to the lower side of the casing body 1, and the panel 2.
  • the grill 3 is provided.
  • the casing body 1, the panel 2 and the grill 3 constitute a casing.
  • the air outlet 10 is provided along the short side of the panel 2 on one side in the longitudinal direction of the panel 2. Moreover, the flap 20 is attached to the panel 2 so that rotation is possible. In FIG. 1, the air outlet 10 is closed by the flap 20.
  • a drain socket 7 is provided so as to protrude from the side wall of the casing body 1.
  • a drain hose (not shown) is connected to the drain socket 7 from the outside.
  • the pipe connecting portions 5 and 6 are provided so as to protrude from the side wall of the casing body 1.
  • a refrigerant pipe (not shown) is connected to the pipe connecting portions 5 and 6 from the outside.
  • reference numeral 8 denotes an electrical component part
  • 101 to 103 are suspension fittings provided so as to protrude from the casing body 1 to the side.
  • FIG. 2 is a perspective view of the indoor unit as viewed obliquely from above.
  • the same components as those in FIG. 1 are denoted by the same reference numerals.
  • FIG. 3 is a bottom view of the indoor unit. 3, the same components as those in FIG. 1 are denoted by the same reference numerals.
  • a suction port 1 a is provided in the central portion of the casing body 1.
  • a filter 4 (shown in FIG. 4) is attached between the suction port 1a and the grill 3.
  • FIG. 4 shows a cross-sectional view taken along line IV-IV in FIG. 3.
  • the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals.
  • a turbo fan 30 driven by a motor 31 is arranged in the casing body 1. Further, a bell mouth 32 is arranged between the suction port 1 a of the casing body 1 and the turbo fan 30. Further, a heat exchanger 40 and a partition plate 50 are arranged in the casing body 1 and around the turbo fan 30. Further, a drain pan 60 is disposed in the casing body 1 and below the heat exchanger 40 and the partition plate 50.
  • the turbo fan 30 is an example of a centrifugal fan.
  • the partition plate 50 is an example of a partition part.
  • the partition part may be formed integrally with the casing.
  • a ventilation path P for guiding the air blown from the turbo fan 30 to the air outlet 10 of the panel 2 is formed in the casing body 1.
  • FIG. 5 is a bottom view of the indoor unit with the panel 2, the drain pan 60, etc. removed.
  • the casing body 1 includes a first wall portion 11 on the outlet 10 (shown in FIG. 9) side, a second wall portion 12 facing the first wall portion 11, and a first wall portion. 11 and the second wall portion 12 and a third wall portion 13 and a fourth wall portion 14 which are opposed to each other.
  • the heat exchanger 40 includes, in plan view, a first heat exchange unit 41 and a second heat exchange unit that is located upstream of the first heat exchange unit 41 in the rotational direction of the turbo fan 30 (arrow R1). 42 and a third heat exchanging portion 43 located downstream of the first heat exchanging portion 41 in the rotational direction of the turbo fan 30 (arrow R1).
  • both ends of the heat exchanger 40 are connected via an arc-shaped partition plate 50, and the turbofan 30 is surrounded by the heat exchanger 40 and the partition plate 50.
  • the partition plate 50 bulges outward.
  • the pipe connection parts 5 and 6 are connected to the end of the third heat exchange part 43 of the heat exchanger 40. Further, a drain pump 70 is disposed in the casing body 1 and on the third wall portion 13 side between the partition plate 50 and the second wall portion 12.
  • FIG. 6 shows the position of the center O1 of the turbo fan 30 of the indoor unit.
  • the center O1 of the turbo fan 30 is turbo with respect to the vertical bisector L2 of the line segment L1 connecting both ends of the partition plate 50. It is located on the upstream side (the left side of the vertical bisector L2 in FIG. 6) in the airflow direction (arrow R2) between the fan 30 and the partition plate 50.
  • the heat exchanger 40 has a heat exchange section 40a (a shaded area shown in FIG. 7) having a line-symmetric shape in plan view.
  • the center O1 of the turbo fan 30 is upstream in the air flow direction (arrow R2) between the turbo fan 30 and the partition plate 50 with respect to the symmetry axis L3 in the heat exchange section 40a having a line-symmetric shape (in FIG. 7).
  • the turbo fan 30 is arranged so as to be located on the left side of the symmetry axis L3.
  • the symmetry axis L ⁇ b> 3 of the heat exchange part 40 a having a line-symmetric shape of the heat exchanger 40 coincides with the center line in the longitudinal direction of the casing body 1.
  • FIG. 8 shows a state where the flap 20 (shown by hatching) is attached to the indoor unit shown in FIG. 5, and
  • FIG. 9 shows a state where the flap 20 of the indoor unit is removed. 8 and 9, the same reference numerals are assigned to the same components as those in FIGS. 1 to 7.
  • the U-shaped heat exchanger 40 in plan view includes a first heat exchanging part 41 arranged in parallel to the first wall part 11 of the casing body 1, and the first heat exchanging part 41.
  • a second heat exchanging part 42 that is continuous with one end of the heat exchanging part 41 and a third heat exchanging part 43 that is continuous with the other end of the first heat exchanging part 41 are provided.
  • the interval between the second heat exchanging portion 42 and the third wall portion 13 is gradually narrowed from the first heat exchanging portion 41 side toward the distal end side. Moreover, the space
  • interval with the 4th wall part 14 is gradually narrowing the 3rd heat exchange part 43 toward the front end side from the 1st heat exchange part 41 side. That is, in the heat exchanger 40, the distance between the second heat exchange unit 42 and the third heat exchange unit 43 gradually increases toward both ends.
  • the said blower outlet 10 is a rectangular 1st blower outlet part 10a provided along the 1st wall part 11 (shown in FIG. 8) of the casing main body 1 as shown in FIG.
  • a second outlet 10b extending from both ends of the outlet 10a toward the second wall 12 (shown in FIG. 8) of the casing body 1 is provided.
  • the flap 20 which controls the wind direction of the blowing air from the said blower outlet 10, as shown in FIG. 8, the flap main body 20a provided along the 1st wall part 11 of the casing main body 1, and the flap main body 20a And an auxiliary flap 20b extending toward the second wall 12 side of the casing body 1 from both ends.
  • the center O1 of the turbo fan 30 (centrifugal fan) rotating in the predetermined rotation direction (R1) is divided into two equal bisectors of the line segment L1 connecting both ends of the partition plate 50 (partition portion).
  • the gap between the turbo fan 30 and the outer periphery of the turbo fan 30 is wider than the gap between the upstream end of the partition plate 50 and the outer periphery of the turbo fan 30.
  • the inventor makes the air flow direction (R2) between the turbo fan 30 and the partition plate 50 with respect to the vertical bisector L2 of the line segment L1 connecting the both ends of the partition plate 50 with the center O1 of the turbo fan 30.
  • the simulation was carried out under the conditions on the upstream side. By this simulation, the pressure in the vicinity of the downstream end portion of the partition plate 50 decreases, the pressure of the high pressure portion generated at the end portion of the partition plate 50 covering the opening of the heat exchanger 40 is reduced, and abnormal noise is generated. It was confirmed that it was suppressed.
  • FIG. 10 shows the pressure distribution obtained by the simulation of the indoor unit of the first embodiment
  • FIG. 11 shows the pressure distribution seen from the line XI-XI in FIG.
  • the pressure of the high pressure portion generated near the downstream end of the partition plate 50 covering the opening of the heat exchanger 30 is reduced.
  • the blower outlet 10 on the opposite side of the partition plate 50 with respect to the heat exchanger 40 of the panel 2, the blown air from the turbo fan 30 is smoothly discharged from the blower outlet 10 through the heat exchanger 40. Can be blown out.
  • the partition plate 50 bulges outward from the line segment L1 connecting both ends of the partition plate 50 (partition portion) in plan view, and the partition plate 50 (partition portion)
  • the turbo fan 30 rotates along the curved partition plate 50 so as to bulge outward when a part of the turbo fan 30 overlaps the region surrounded by the line segment L1 connecting both ends and the partition plate 50.
  • the partition plate 50 can smoothly guide the air blown from the turbo fan 30 and the storage space in the casing body 1 can be reduced.
  • the third heat exchanging unit 43 located on the downstream side in the rotation direction of the turbo fan 30 of the first heat exchanging unit 41 of the heat exchanger 40 is connected to the upstream of the rotation direction of the turbo fan 30 in the first heat exchanging unit 41.
  • a pipe connecting portion 5, 6 at the end of the third heat exchanging portion 43 by making it shorter than the second heat exchanging portion 42 located on the side, a space for the connecting pipe is ensured in the casing body 1. Can do.
  • the clearance gap between the downstream edge part of the partition plate 50 and the outer periphery of the turbofan 30 is made into the partition plate 50. The clearance between the upstream end and the outer periphery of the turbofan 30 can be made wider.
  • the turbo fan 30 is used as a centrifugal fan, but other centrifugal fans such as a sirocco fan may be used.
  • FIG. 12 has shown the bottom view of the state which removed the panel, drain pan, etc. of the indoor unit of the air conditioner of 2nd Embodiment of this invention.
  • the indoor unit of the air conditioner of the second embodiment has the same configuration as the indoor unit of the air conditioner of the first embodiment except for the heat exchanger, and FIGS. 1 to 9 are used.
  • the indoor unit of the air conditioner of the second embodiment includes a U-shaped heat exchanger 140 in plan view as shown in FIG.
  • the heat exchanger 140 includes a first heat exchange part 141 arranged in parallel to the first wall part 11 of the casing body 1, a second heat exchange part 142 connected to one end of the first heat exchange part 141, And a third heat exchanging part 143 connected to the other end of the one heat exchanging part 141.
  • the second heat exchanging part 142 extends so as to be parallel to the second wall part 12.
  • the third heat exchanging part 143 extends so as to be parallel to the third wall part 13.
  • the air conditioner indoor unit of the second embodiment has the same effect as the air conditioner indoor unit of the first embodiment.
  • the 2nd, 3rd heat exchange part 142,143 extended from the both ends of the 1st heat exchange part 141 should just extend so that it may mutually become parallel irrespective of the shape of a casing main body.
  • the indoor unit of the air conditioner according to the third embodiment of the present invention has the same configuration as the indoor unit of the air conditioner according to the first embodiment except for the air outlet, and FIGS.
  • the indoor unit of the air conditioner of this 3rd Embodiment is provided with the outlet which blows off to three directions. .
  • the air outlet 10 is provided along the short side of the panel 2, and the second and third air outlets are provided along the opposing long side of the panel 2, respectively.
  • the indoor unit of the air conditioner of the third embodiment has the same effect as the indoor unit of the air conditioner of the first embodiment.
  • the indoor unit including the casing constituted by the casing body 1, the panel 2, and the grill 3 has been described, but the shape of the casing is not limited thereto.
  • the indoor unit including the U-shaped heat exchanger 40 has been described.
  • the heat exchanger is not limited to this, and the arc shape, the V shape, or the U shape is used. It may be a heat exchanger such as a shape.
  • the ceiling-embedded indoor unit has been described.
  • the indoor unit is not limited to this, and the present invention may be applied to a ceiling-mounted indoor unit.
  • the heat exchanger 40 includes the first heat exchange unit 41, the second heat exchange unit 42 connected to one end of the first heat exchange unit 41, and the first heat exchange unit 41.
  • the indoor unit provided with the heat exchanger 40 having the third heat exchanging portion 43 connected to the other end of the first heat exchanging portion has been described, the first heat exchanging portion, the second heat exchanging portion, and the third heat exchanging portion are divided. You may apply this invention to the indoor unit provided with the heat exchanger 40.
  • SYMBOLS 1 Casing main body 1a ... Suction inlet 2 ... Panel 3 ... Grill 4 ... Filter 5, 6 ... Pipe connection part 7 ... Drain socket 8 ... Electrical component part 10 ... Outlet 11 ... 1st wall part 12 ... 2nd wall part 13 ... 3rd wall part 14 ... 4th wall part 20 ... Flap 30 ... Turbo fan (centrifugal fan) DESCRIPTION OF SYMBOLS 31 ... Motor 32 ... Bellmouth 40,140 ... Heat exchanger 41,141 ... 1st heat exchange part 42,142 ... 2nd heat exchange part 43,143 ... 3rd heat exchange part 50 ... Partition plate (partition part) 60 ... Drain pan 70 ... Drain pump

Abstract

This indoor unit for an air conditioner is provided with: a turbo fan (30) which is disposed in a casing, and which rotates in a prescribed rotation direction (arrow R1); a heat exchanger (40) which is disposed in the casing and around the turbo fan (30); and a partition plate (50) which connects the two ends of the heat exchanger (40), and which, along with the heat exchanger (40), surrounds the turbo fan (30). The centre O1 of the turbo fan (30) is positioned upstream of an orthogonal bisector L2 of a line L1 linking the two ends of the partition plate (50), in an air flow direction (arrow R2) between the turbo fan (30) and the partition plate (50). Accordingly, an indoor unit for an air conditioner is provided which is capable of reducing the pressure in a high pressure part generated at ends of the partition part covering an opening to the heat exchanger (40), and which is capable of inhibiting the occurrence of noise.

Description

空気調和機の室内機Air conditioner indoor unit
　この発明は、空気調和機の室内機に関する。 This invention relates to an indoor unit of an air conditioner.
　従来、空気調和機の室内機としては、コの字形状の熱交換器を備え、熱交換器の開口部を仕切部で覆って、熱交換器と仕切部で囲まれたターボファンにより吸い込んだ空気を熱交換器を介して二方向に吹き出すものがある(例えば、特開２０１５－８１６９２号公報(特許文献１)参照)。 Conventionally, as an indoor unit of an air conditioner, a U-shaped heat exchanger is provided, the opening of the heat exchanger is covered with a partition part, and sucked by a turbo fan surrounded by the heat exchanger and the partition part. There is one that blows air in two directions through a heat exchanger (see, for example, JP-A-2015-81692 (Patent Document 1)).
　上記空気調和機の室内機では、仕切部にターボファンに向けて突出する部分を設けて、二方向の吹出口への空気の流れを均一にしている。 In the indoor unit of the air conditioner described above, a part that protrudes toward the turbo fan is provided in the partition part to make the air flow to the two-way outlet uniform.
特開２０１５－８１６９２号公報Japanese Patent Laying-Open No. 2015-81692
　上記従来の空気調和機の室内機では、ターボファンの中心は熱交換器およびケーシング本体の中心線上に位置し、熱交換器と仕切部は左右対称な形状であるため、ターボファンの回転方向が一方向であるにもかかわらず、空気の流れが左右で異なることにより仕切部に高圧部が生じて異音が発生するという問題があった。 In the above-described conventional air conditioner indoor unit, the center of the turbo fan is located on the center line of the heat exchanger and the casing body, and the heat exchanger and the partition are symmetrically shaped. In spite of being unidirectional, there is a problem that a high-pressure part is generated in the partition part due to the difference in the air flow between right and left, and abnormal noise is generated.
　そこで、この発明の課題は、熱交換器の開口部を覆う仕切部の端部において発生する高圧部の圧力を低減でき、異音の発生を抑制できる空気調和機の室内機を提供することにある。 Then, the subject of this invention is providing the indoor unit of the air conditioner which can reduce the pressure of the high voltage | pressure part which generate | occur | produces in the edge part of the partition part which covers the opening part of a heat exchanger, and can suppress generation | occurrence | production of abnormal noise. is there.
　この発明の一態様に係る空気調和機の室内機は、
　ケーシングと、
　上記ケーシング内に配置され、所定の回転方向に回転する遠心ファンと、
　上記ケーシング内かつ上記遠心ファンの周囲に配置された熱交換器と、
　上記熱交換器の両端を連結して、上記熱交換器と共に上記遠心ファンを囲う仕切部と
を備え、
　上記遠心ファンの中心は、上記仕切部の両端を結ぶ線分の垂直二等分線に対して、上記遠心ファンと上記仕切部との間の気流方向における上流側に位置することを特徴とする。 An indoor unit of an air conditioner according to one aspect of the present invention is
A casing,
A centrifugal fan disposed in the casing and rotating in a predetermined rotation direction;
A heat exchanger disposed in the casing and around the centrifugal fan;
A partition that encloses the centrifugal fan together with the heat exchanger by connecting both ends of the heat exchanger;
The center of the centrifugal fan is located on the upstream side in the air flow direction between the centrifugal fan and the partition with respect to a vertical bisector connecting a line connecting both ends of the partition. .
　上記構成によれば、所定の回転方向に回転する遠心ファンの中心が、仕切部の両端を結ぶ線分の垂直二等分線に対して、遠心ファンと仕切部との間の気流方向における上流側に位置することによって、熱交換器の開口部を覆う仕切部の下流側の端部と遠心ファンの外周との隙間が、上流側の端部と遠心ファンの外周との隙間よりも広くなる。これにより、大きな異音が発生する仕切部の下流側の端部近傍の圧力が下がるので、熱交換器の開口部を覆う仕切部の端部において発生する高圧部の圧力を低減でき、異音の発生を抑制できる。 According to the above configuration, the center of the centrifugal fan that rotates in the predetermined rotation direction is upstream in the air flow direction between the centrifugal fan and the partition with respect to the vertical bisector connecting the both ends of the partition. By being located on the side, the gap between the downstream end of the partition covering the opening of the heat exchanger and the outer periphery of the centrifugal fan is wider than the gap between the upstream end and the outer periphery of the centrifugal fan. . As a result, the pressure in the vicinity of the downstream end of the partition where large abnormal noise is generated decreases, so that the pressure in the high pressure section generated at the end of the partition covering the opening of the heat exchanger can be reduced. Can be suppressed.
　また、一実施形態の空気調和機の室内機では、
　上記ケーシングの上記熱交換器に対して上記仕切部と反対の側に吹出口を設けた。 Moreover, in the indoor unit of the air conditioner of one embodiment,
The blower outlet was provided in the opposite side to the said partition part with respect to the said heat exchanger of the said casing.
　上記実施形態によれば、ケーシングの熱交換器に対して仕切部と反対の側に吹出口を設けることによって、遠心ファンからの吹出空気が、熱交換器を介して吹出口からスムーズに吹き出すことができる。 According to the said embodiment, the blowing air from a centrifugal fan blows off smoothly from a blower outlet via a heat exchanger by providing a blower outlet on the opposite side to a partition part with respect to the heat exchanger of a casing. Can do.
　また、一実施形態の空気調和機の室内機では、
　上記仕切部は、平面視において両端を結ぶ線分よりも外側に向かって膨出しており、
　上記仕切部の両端を結ぶ上記線分と上記仕切部によって囲まれた領域に上記遠心ファンの一部が重なっている。 Moreover, in the indoor unit of the air conditioner of one embodiment,
The partition portion bulges outward from a line segment connecting both ends in plan view,
A part of the centrifugal fan is overlapped with an area surrounded by the line segment connecting both ends of the partition part and the partition part.
　上記実施形態によれば、平面視において仕切部の両端を結ぶ線分よりも外側に向かって仕切部が膨出しており、その仕切部の両端を結ぶ線分と仕切部によって囲まれた領域に遠心ファンの一部が重なることによって、外側に向かって膨出するように湾曲した仕切部に沿って遠心ファンが回転して、遠心ファンからの吹出空気を仕切部がスムーズに案内すると共に、ケーシング内の収納スペースを小さくできる。 According to the above embodiment, the partition portion bulges outward from the line segment connecting both ends of the partition portion in plan view, and the region surrounded by the line segment connecting the both ends of the partition portion and the partition portion. When a part of the centrifugal fan overlaps, the centrifugal fan rotates along the partition part curved so as to bulge outward, and the partition part smoothly guides the air blown from the centrifugal fan. The storage space inside can be reduced.
　また、一実施形態の空気調和機の室内機では、
　上記熱交換器は、平面視において、第１熱交換部と、上記第１熱交換部の上記遠心ファンの回転方向の上流側に位置する第２熱交換部と、上記第１熱交換部の上記遠心ファンの回転方向の下流側に位置する第３熱交換部と、を有し、
　上記第３熱交換部は、上記第２熱交換部よりも短い。 Moreover, in the indoor unit of the air conditioner of one embodiment,
In the plan view, the heat exchanger includes a first heat exchange unit, a second heat exchange unit located upstream of the first heat exchange unit in the rotational direction of the centrifugal fan, and the first heat exchange unit. A third heat exchanging part located on the downstream side in the rotational direction of the centrifugal fan,
The third heat exchange unit is shorter than the second heat exchange unit.
　上記実施形態によれば、第１熱交換部の遠心ファンの回転方向の下流側に位置する第３熱交換部を、第１熱交換部の遠心ファンの回転方向の上流側に位置する第２熱交換部よりも短くすることによって、第３熱交換部の端部に配管接続部を設けて、ケーシング内に接続配管のスペースを確保することができる。また、上記第２熱交換部と第３熱交換部を同じ長さにした場合に比べて、仕切部の下流側の端部と遠心ファンの外周との隙間を、仕切部の上流側の端部と遠心ファンの外周との隙間よりもより広くすることが可能になる。 According to the embodiment, the third heat exchange unit located on the downstream side in the rotation direction of the centrifugal fan of the first heat exchange unit is located on the upstream side in the rotation direction of the centrifugal fan of the first heat exchange unit. By making it shorter than the heat exchange part, a pipe connection part can be provided at the end of the third heat exchange part, and a space for the connection pipe can be secured in the casing. Moreover, compared with the case where the said 2nd heat exchange part and the 3rd heat exchange part are made into the same length, the clearance gap between the downstream edge part of a partition part and the outer periphery of a centrifugal fan is set to the upstream edge part of a partition part. It becomes possible to make it wider than the gap between the part and the outer periphery of the centrifugal fan.
　以上より明らかなように、この発明によれば、所定の回転方向に回転する遠心ファンの中心が、仕切部の両端を結ぶ線分の垂直二等分線に対して、遠心ファンと仕切部との間の気流方向における上流側に位置するように、遠心ファンを配置することによって、熱交換器の開口部を覆う仕切部の端部において発生する高圧部の圧力を低減でき、異音の発生を抑制できる空気調和機の室内機を実現することができる。 As apparent from the above, according to the present invention, the center of the centrifugal fan rotating in the predetermined rotational direction is in the vertical bisector connecting the both ends of the partition part, and the centrifugal fan and the partition part are By arranging the centrifugal fan so that it is located upstream in the airflow direction between the two, the pressure of the high pressure part generated at the end of the partition that covers the opening of the heat exchanger can be reduced, and the generation of abnormal noise It is possible to realize an indoor unit of an air conditioner that can suppress the above.
図１はこの発明の第１実施形態の空気調和機の室内機を斜め下方から見た斜視図である。FIG. 1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment of the present invention viewed obliquely from below. 図２は上記室内機を斜め上方から見た斜視図である。FIG. 2 is a perspective view of the indoor unit as viewed obliquely from above. 図３は上記室内機の下面図である。FIG. 3 is a bottom view of the indoor unit. 図４は図３のIV－IV線から見た断面図である。4 is a cross-sectional view taken along line IV-IV in FIG. 図５は上記室内機のパネルやドレンパンなどを外した状態を示す下面図である。FIG. 5 is a bottom view showing a state in which the panel and drain pan of the indoor unit are removed. 図６は上記室内機のターボファンの中心の位置を示す図である。FIG. 6 is a diagram showing the center position of the turbo fan of the indoor unit. 図７は上記室内機のターボファンの中心の位置を示す図である。FIG. 7 is a view showing the center position of the turbo fan of the indoor unit. 図８は図５の室内機にフラップを取り付けた状態を示す下面図である。FIG. 8 is a bottom view showing a state where a flap is attached to the indoor unit of FIG. 図９は上記室内機のフラップを外した状態を示す下面図である。FIG. 9 is a bottom view showing a state where the flap of the indoor unit is removed. 図１０は上記第１実施形態の室内機の室内機の圧力分布を示す図である。FIG. 10 is a view showing the pressure distribution of the indoor unit of the indoor unit of the first embodiment. 図１１は図１０のXI－XI線から見た圧力分布を示す図である。FIG. 11 is a diagram showing the pressure distribution as seen from the line XI-XI in FIG. 図１２はこの発明の第２実施形態の空気調和機の室内機のパネルやドレンパンなどを外した状態を示す下面図である。FIG. 12 is a bottom view showing a state in which the panel and drain pan of the indoor unit of the air conditioner according to the second embodiment of the present invention are removed.
　以下、この発明の空気調和機の室内機を図示の実施の形態により詳細に説明する。 Hereinafter, the indoor unit of the air conditioner of the present invention will be described in detail with reference to the illustrated embodiments.
　〔第１実施形態〕
　図１はこの発明の第１実施形態の空気調和機の室内機を斜め下方から見た斜視図を示している。この室内機は、天井埋め込み型の室内機である。 [First Embodiment]
FIG. 1: has shown the perspective view which looked at the indoor unit of the air conditioner of 1st Embodiment of this invention from diagonally downward. This indoor unit is a ceiling-embedded indoor unit.
　この第１実施形態の空気調和機の室内機は、図１に示すように、ケーシング本体１と、ケーシング本体１の下側に取り付けられた矩形状のパネル２と、パネル２に着脱可能に取り付けられたグリル３とを備えている。上記ケーシング本体１とパネル２およびグリル３でケーシングを構成している。 As shown in FIG. 1, the indoor unit of the air conditioner of the first embodiment is detachably attached to the casing body 1, a rectangular panel 2 attached to the lower side of the casing body 1, and the panel 2. The grill 3 is provided. The casing body 1, the panel 2 and the grill 3 constitute a casing.
　上記パネル２の長手方向の一方に、パネル２の短辺に沿って吹出口１０を設けている。また、パネル２にフラップ２０を回動可能に取り付けている。図１では、フラップ２０により吹出口１０が閉じられた状態を示す。 The air outlet 10 is provided along the short side of the panel 2 on one side in the longitudinal direction of the panel 2. Moreover, the flap 20 is attached to the panel 2 so that rotation is possible. In FIG. 1, the air outlet 10 is closed by the flap 20.
　また、上記ケーシング本体１の側壁から突出するようにドレンソケット７を設けている。このドレンソケット７に外部からドレンホース(図示せず)を接続する。また、配管接続部５,６を、ケーシング本体１の側壁から突出するように設けている。この配管接続部５,６に、外部から冷媒配管(図示せず)を接続する。 Further, a drain socket 7 is provided so as to protrude from the side wall of the casing body 1. A drain hose (not shown) is connected to the drain socket 7 from the outside. Further, the pipe connecting portions 5 and 6 are provided so as to protrude from the side wall of the casing body 1. A refrigerant pipe (not shown) is connected to the pipe connecting portions 5 and 6 from the outside.
　なお、図１において、８は電装品部であり、１０１～１０３は、ケーシング本体１から側方に突出するように夫々設けられた吊り金具である。 In FIG. 1, reference numeral 8 denotes an electrical component part, and 101 to 103 are suspension fittings provided so as to protrude from the casing body 1 to the side.
　また、図２は上記室内機を斜め上方から見た斜視図を示しており、図２において、図１と同一の構成部には同一参照番号を付している。 FIG. 2 is a perspective view of the indoor unit as viewed obliquely from above. In FIG. 2, the same components as those in FIG. 1 are denoted by the same reference numerals.
　また、図３は上記室内機の下面図を示している。図３において、図１と同一の構成部には同一参照番号を付している。 FIG. 3 is a bottom view of the indoor unit. 3, the same components as those in FIG. 1 are denoted by the same reference numerals.
　図３に示すように、ケーシング本体１の中央部分に吸込口１ａを設けている。この吸込口１ａとグリル３との間にフィルタ４(図４に示す)を取り付けている。 As shown in FIG. 3, a suction port 1 a is provided in the central portion of the casing body 1. A filter 4 (shown in FIG. 4) is attached between the suction port 1a and the grill 3.
　図４は図３のIV－IV線から見た断面図を示しており、図４において、図１～図３と同一の構成部には同一参照番号を付している。 FIG. 4 shows a cross-sectional view taken along line IV-IV in FIG. 3. In FIG. 4, the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals.
　図４に示すように、ケーシング本体１内に、モータ３１により駆動されるターボファン３０を配置している。また、ケーシング本体１の吸込口１ａとターボファン３０との間にベルマウス３２を配置している。また、ケーシング本体１内かつターボファン３０の周囲に熱交換器４０と仕切板５０を配置している。さらに、ケーシング本体１内かつ熱交換器４０と仕切板５０の下側にドレンパン６０を配置している。 As shown in FIG. 4, a turbo fan 30 driven by a motor 31 is arranged in the casing body 1. Further, a bell mouth 32 is arranged between the suction port 1 a of the casing body 1 and the turbo fan 30. Further, a heat exchanger 40 and a partition plate 50 are arranged in the casing body 1 and around the turbo fan 30. Further, a drain pan 60 is disposed in the casing body 1 and below the heat exchanger 40 and the partition plate 50.
　上記ターボファン３０は、遠心ファンの一例である。また、仕切板５０は、仕切部の一例である。なお、仕切部は、ケーシングと一体に形成されていてもよい。 The turbo fan 30 is an example of a centrifugal fan. Moreover, the partition plate 50 is an example of a partition part. In addition, the partition part may be formed integrally with the casing.
　また、ケーシング本体１内に、ターボファン３０からの吹出空気をパネル２の吹出口１０に案内する通風路Ｐを形成している。 Also, a ventilation path P for guiding the air blown from the turbo fan 30 to the air outlet 10 of the panel 2 is formed in the casing body 1.
　また、図５はパネル２やドレンパン６０などを外した状態の室内機の下面図を示している。 FIG. 5 is a bottom view of the indoor unit with the panel 2, the drain pan 60, etc. removed.
　図５に示すように、ケーシング本体１は、吹出口１０(図９に示す)側の第１壁部１１と、その第１壁部１１に対向する第２壁部１２と、第１壁部１１と第２壁部１２との間に設けられて互いに対向する第３壁部１３と第４壁部１４とを有する。 As shown in FIG. 5, the casing body 1 includes a first wall portion 11 on the outlet 10 (shown in FIG. 9) side, a second wall portion 12 facing the first wall portion 11, and a first wall portion. 11 and the second wall portion 12 and a third wall portion 13 and a fourth wall portion 14 which are opposed to each other.
　上記熱交換器４０は、平面視において、第１熱交換部４１と、上記第１熱交換部４１に対してターボファン３０の回転方向(矢印Ｒ１)の上流側に位置する第２熱交換部４２と、上記第１熱交換部４１に対してターボファン３０の回転方向(矢印Ｒ１)の下流側に位置する第３熱交換部４３とを有する。 The heat exchanger 40 includes, in plan view, a first heat exchange unit 41 and a second heat exchange unit that is located upstream of the first heat exchange unit 41 in the rotational direction of the turbo fan 30 (arrow R1). 42 and a third heat exchanging portion 43 located downstream of the first heat exchanging portion 41 in the rotational direction of the turbo fan 30 (arrow R1).
　そして、円弧形状の仕切板５０を介して熱交換器４０の両端を連結して、熱交換器４０と仕切板５０によりターボファン３０を囲んでいる。仕切板５０は、外側に向かって膨出している。 Then, both ends of the heat exchanger 40 are connected via an arc-shaped partition plate 50, and the turbofan 30 is surrounded by the heat exchanger 40 and the partition plate 50. The partition plate 50 bulges outward.
　上記熱交換器４０の第３熱交換部４３の端部に配管接続部５,６を接続している。また、ケーシング本体１内かつ仕切板５０と第２壁部１２との間の第３壁部１３側に、ドレンポンプ７０を配置している。 The pipe connection parts 5 and 6 are connected to the end of the third heat exchange part 43 of the heat exchanger 40. Further, a drain pump 70 is disposed in the casing body 1 and on the third wall portion 13 side between the partition plate 50 and the second wall portion 12.
　図６は上記室内機のターボファン３０の中心Ｏ１の位置を示しており、ターボファン３０の中心Ｏ１は、仕切板５０の両端を結ぶ線分Ｌ１の垂直二等分線Ｌ２に対して、ターボファン３０と仕切板５０との間の気流方向(矢印Ｒ２)における上流側(図６中の垂直二等分線Ｌ２の左側)に位置する。 FIG. 6 shows the position of the center O1 of the turbo fan 30 of the indoor unit. The center O1 of the turbo fan 30 is turbo with respect to the vertical bisector L2 of the line segment L1 connecting both ends of the partition plate 50. It is located on the upstream side (the left side of the vertical bisector L2 in FIG. 6) in the airflow direction (arrow R2) between the fan 30 and the partition plate 50.
　さらに、上記ターボファン３０の中心Ｏ１の位置は、図７に示すように設定されている。上記熱交換器４０は、平面視において線対称な形状の熱交換部４０ａ(図７に示す斜線領域)を有している。この線対称な形状の熱交換部４０ａにおける対称軸Ｌ３に対して、ターボファン３０の中心Ｏ１が、ターボファン３０と仕切板５０との間の気流方向(矢印Ｒ２)における上流側(図７中の対称軸Ｌ３の左側)に位置するように、ターボファン３０を配置している。 Furthermore, the position of the center O1 of the turbo fan 30 is set as shown in FIG. The heat exchanger 40 has a heat exchange section 40a (a shaded area shown in FIG. 7) having a line-symmetric shape in plan view. The center O1 of the turbo fan 30 is upstream in the air flow direction (arrow R2) between the turbo fan 30 and the partition plate 50 with respect to the symmetry axis L3 in the heat exchange section 40a having a line-symmetric shape (in FIG. 7). The turbo fan 30 is arranged so as to be located on the left side of the symmetry axis L3.
　ここで、熱交換器４０とケーシング本体１との位置関係については、熱交換器４０の線対称な形状の熱交換部４０ａの対称軸Ｌ３と、ケーシング本体１の長手方向の中心線が一致するように、ケーシング本体１内に熱交換器４０を配置するのが望ましい。 Here, as for the positional relationship between the heat exchanger 40 and the casing body 1, the symmetry axis L <b> 3 of the heat exchange part 40 a having a line-symmetric shape of the heat exchanger 40 coincides with the center line in the longitudinal direction of the casing body 1. Thus, it is desirable to arrange the heat exchanger 40 in the casing body 1.
　また、図８は図５に示す室内機にフラップ２０(斜線で示す)を取り付けた状態を示しており、図９は上記室内機のフラップ２０を外した状態を示している。図８,図９において、図１～図７と同一の構成部には同一参照番号を付している。 FIG. 8 shows a state where the flap 20 (shown by hatching) is attached to the indoor unit shown in FIG. 5, and FIG. 9 shows a state where the flap 20 of the indoor unit is removed. 8 and 9, the same reference numerals are assigned to the same components as those in FIGS. 1 to 7.
　図８,図９に示すように、平面視においてコの字形状の熱交換器４０は、ケーシング本体１の第１壁部１１に平行に配置された第１熱交換部４１と、その第１熱交換部４１の一端に連なる第２熱交換部４２と、第１熱交換部４１の他端に連なる第３熱交換部４３とを備えている。 As shown in FIGS. 8 and 9, the U-shaped heat exchanger 40 in plan view includes a first heat exchanging part 41 arranged in parallel to the first wall part 11 of the casing body 1, and the first heat exchanging part 41. A second heat exchanging part 42 that is continuous with one end of the heat exchanging part 41 and a third heat exchanging part 43 that is continuous with the other end of the first heat exchanging part 41 are provided.
　上記第２熱交換部４２は、第１熱交換部４１側から先端側に向かって第３壁部１３との間隔が徐々に狭くなっている。また、第３熱交換部４３は、第１熱交換部４１側から先端側に向かって第４壁部１４との間隔が徐々に狭くなっている。すなわち、熱交換器４０は、第２熱交換部４２と第３熱交換部４３との間隔が両端に向かって徐々に広がっている。 The interval between the second heat exchanging portion 42 and the third wall portion 13 is gradually narrowed from the first heat exchanging portion 41 side toward the distal end side. Moreover, the space | interval with the 4th wall part 14 is gradually narrowing the 3rd heat exchange part 43 toward the front end side from the 1st heat exchange part 41 side. That is, in the heat exchanger 40, the distance between the second heat exchange unit 42 and the third heat exchange unit 43 gradually increases toward both ends.
　また、上記吹出口１０は、図９に示すように、ケーシング本体１の第１壁部１１(図８に示す)に沿うように設けられた長方形状の第１吹出口部１０ａと、第１吹出口部１０ａの両端部からケーシング本体１の第２壁部１２(図８に示す)に向かって延在する第２吹出口部１０ｂを設けている。 Moreover, the said blower outlet 10 is a rectangular 1st blower outlet part 10a provided along the 1st wall part 11 (shown in FIG. 8) of the casing main body 1 as shown in FIG. A second outlet 10b extending from both ends of the outlet 10a toward the second wall 12 (shown in FIG. 8) of the casing body 1 is provided.
　また、上記吹出口１０からの吹出空気の風向を制御するフラップ２０は、図８に示すように、ケーシング本体１の第１壁部１１に沿うように設けられたフラップ本体２０ａと、フラップ本体２０ａの両端部からケーシング本体１の第２壁部１２側に向かって延びる補助フラップ２０ｂとを有する。 Moreover, the flap 20 which controls the wind direction of the blowing air from the said blower outlet 10, as shown in FIG. 8, the flap main body 20a provided along the 1st wall part 11 of the casing main body 1, and the flap main body 20a And an auxiliary flap 20b extending toward the second wall 12 side of the casing body 1 from both ends.
　上記構成の室内機によれば、所定の回転方向(Ｒ１)に回転するターボファン３０(遠心ファン)の中心Ｏ１が、仕切板５０(仕切部)の両端を結ぶ線分Ｌ１の垂直二等分線Ｌ２に対して、ターボファン３０と仕切板５０との間の気流方向(Ｒ２)における上流側に位置することによって、熱交換器４０の開口部を覆う仕切板５０の下流側の端部とターボファン３０の外周との隙間が、仕切板５０の上流側の端部とターボファン３０の外周との隙間よりも広くなる。これにより、大きな異音が発生する仕切板５０の下流側の端部近傍の圧力が下がるので、熱交換器４０の開口部を覆う仕切板５０の端部において発生する高圧部の圧力を低減でき、異音の発生を抑制することができる。 According to the indoor unit configured as described above, the center O1 of the turbo fan 30 (centrifugal fan) rotating in the predetermined rotation direction (R1) is divided into two equal bisectors of the line segment L1 connecting both ends of the partition plate 50 (partition portion). The downstream end of the partition plate 50 covering the opening of the heat exchanger 40 by being positioned upstream of the line L2 in the airflow direction (R2) between the turbofan 30 and the partition plate 50 The gap between the turbo fan 30 and the outer periphery of the turbo fan 30 is wider than the gap between the upstream end of the partition plate 50 and the outer periphery of the turbo fan 30. As a result, the pressure in the vicinity of the downstream end portion of the partition plate 50 where a large abnormal noise is generated is lowered, so that the pressure of the high pressure portion generated at the end portion of the partition plate 50 covering the opening of the heat exchanger 40 can be reduced. The occurrence of abnormal noise can be suppressed.
　本発明者は、ターボファン３０の中心Ｏ１を、仕切板５０の両端を結ぶ線分Ｌ１の垂直二等分線Ｌ２に対して、ターボファン３０と仕切板５０との間の気流方向(Ｒ２)における上流側にした条件でシミュレーションを実施した。このシミュレーションによって、仕切板５０の下流側の端部近傍の圧力が下がり、熱交換器４０の開口部を覆う仕切板５０の端部で発生する高圧部の圧力が低減されて、異音の発生を抑制することが確認できた。 The inventor makes the air flow direction (R2) between the turbo fan 30 and the partition plate 50 with respect to the vertical bisector L2 of the line segment L1 connecting the both ends of the partition plate 50 with the center O1 of the turbo fan 30. The simulation was carried out under the conditions on the upstream side. By this simulation, the pressure in the vicinity of the downstream end portion of the partition plate 50 decreases, the pressure of the high pressure portion generated at the end portion of the partition plate 50 covering the opening of the heat exchanger 40 is reduced, and abnormal noise is generated. It was confirmed that it was suppressed.
　図１０は上記第１実施形態の室内機のシミュレーションにより得られた圧力分布を示しており、図１１は図１０のXI－XI線から見た圧力分布を示している。図１０,図１１に示すように、熱交換器３０の開口部を覆う仕切板５０の下流側の端部近傍に発生する高圧部の圧力が低減されている。 FIG. 10 shows the pressure distribution obtained by the simulation of the indoor unit of the first embodiment, and FIG. 11 shows the pressure distribution seen from the line XI-XI in FIG. As shown in FIGS. 10 and 11, the pressure of the high pressure portion generated near the downstream end of the partition plate 50 covering the opening of the heat exchanger 30 is reduced.
　また、上記パネル２の熱交換器４０に対して仕切板５０と反対の側に吹出口１０を設けることによって、ターボファン３０からの吹出空気が、熱交換器４０を介して吹出口１０からスムーズに吹き出すことができる。 Moreover, by providing the blower outlet 10 on the opposite side of the partition plate 50 with respect to the heat exchanger 40 of the panel 2, the blown air from the turbo fan 30 is smoothly discharged from the blower outlet 10 through the heat exchanger 40. Can be blown out.
　また、図６に示すように、平面視において仕切板５０(仕切部)の両端を結ぶ線分Ｌ１よりも仕切板５０が外側に向かって膨出しており、その仕切板５０(仕切部)の両端を結ぶ線分Ｌ１と仕切板５０によって囲まれた領域にターボファン３０の一部が重なることによって、外側に向かって膨出するように湾曲した仕切板５０に沿ってターボファン３０が回転して、ターボファン３０からの吹出空気を仕切板５０がスムーズに案内すると共に、ケーシング本体１内の収納スペースを小さくできる。 In addition, as shown in FIG. 6, the partition plate 50 bulges outward from the line segment L1 connecting both ends of the partition plate 50 (partition portion) in plan view, and the partition plate 50 (partition portion) The turbo fan 30 rotates along the curved partition plate 50 so as to bulge outward when a part of the turbo fan 30 overlaps the region surrounded by the line segment L1 connecting both ends and the partition plate 50. Thus, the partition plate 50 can smoothly guide the air blown from the turbo fan 30 and the storage space in the casing body 1 can be reduced.
　また、上記熱交換器４０の第１熱交換部４１のターボファン３０の回転方向の下流側に位置する第３熱交換部４３を、第１熱交換部４１のターボファン３０の回転方向の上流側に位置する第２熱交換部４２よりも短くすることによって、第３熱交換部４３の端部に配管接続部５,６を設けて、ケーシング本体１内に接続配管のスペースを確保することができる。また、第２熱交換部４２と第３熱交換部４３を同じ長さにした場合に比べて、仕切板５０の下流側の端部とターボファン３０の外周との隙間を、仕切板５０の上流側の端部とターボファン３０の外周との隙間よりもより広くすることができる。 Further, the third heat exchanging unit 43 located on the downstream side in the rotation direction of the turbo fan 30 of the first heat exchanging unit 41 of the heat exchanger 40 is connected to the upstream of the rotation direction of the turbo fan 30 in the first heat exchanging unit 41. By providing a pipe connecting portion 5, 6 at the end of the third heat exchanging portion 43 by making it shorter than the second heat exchanging portion 42 located on the side, a space for the connecting pipe is ensured in the casing body 1. Can do. Moreover, compared with the case where the 2nd heat exchange part 42 and the 3rd heat exchange part 43 are made into the same length, the clearance gap between the downstream edge part of the partition plate 50 and the outer periphery of the turbofan 30 is made into the partition plate 50. The clearance between the upstream end and the outer periphery of the turbofan 30 can be made wider.
　上記第１実施形態では、遠心ファンとしてターボファン３０を用いたが、シロッコファンなどの他の遠心ファンを用いてもよい。 In the first embodiment, the turbo fan 30 is used as a centrifugal fan, but other centrifugal fans such as a sirocco fan may be used.
　〔第２実施形態〕
　図１２はこの発明の第２実施形態の空気調和機の室内機のパネルやドレンパンなどを外した状態の下面図を示している。この第２実施形態の空気調和機の室内機は、熱交換器を除いて第１実施形態の空気調和機の室内機と同一の構成をしており、図１～図９を援用する。 [Second Embodiment]
FIG. 12: has shown the bottom view of the state which removed the panel, drain pan, etc. of the indoor unit of the air conditioner of 2nd Embodiment of this invention. The indoor unit of the air conditioner of the second embodiment has the same configuration as the indoor unit of the air conditioner of the first embodiment except for the heat exchanger, and FIGS. 1 to 9 are used.
　この第２実施形態の空気調和機の室内機は、図１２に示すように、平面視においてコの字形状の熱交換器１４０を備えている。この熱交換器１４０は、ケーシング本体１の第１壁部１１に平行に配置された第１熱交換部１４１と、その第１熱交換部１４１の一端に連なる第２熱交換部１４２と、第１熱交換部１４１の他端に連なる第３熱交換部１４３とを備えている。第２熱交換部１４２は、第２壁部１２に対して平行になるように延在している。また、第３熱交換部１４３は、第３壁部１３に対して平行になるように延在している。 The indoor unit of the air conditioner of the second embodiment includes a U-shaped heat exchanger 140 in plan view as shown in FIG. The heat exchanger 140 includes a first heat exchange part 141 arranged in parallel to the first wall part 11 of the casing body 1, a second heat exchange part 142 connected to one end of the first heat exchange part 141, And a third heat exchanging part 143 connected to the other end of the one heat exchanging part 141. The second heat exchanging part 142 extends so as to be parallel to the second wall part 12. Further, the third heat exchanging part 143 extends so as to be parallel to the third wall part 13.
　上記第２実施形態の空気調和機の室内機は、第１実施形態の空気調和機の室内機と同様の効果を有する。 The air conditioner indoor unit of the second embodiment has the same effect as the air conditioner indoor unit of the first embodiment.
　なお、ケーシング本体の形状によらず、第１熱交換部１４１の両端から延びる第２,第３熱交換部１４２,１４３が互いに平行になるように延在していればよい。 In addition, the 2nd, 3rd heat exchange part 142,143 extended from the both ends of the 1st heat exchange part 141 should just extend so that it may mutually become parallel irrespective of the shape of a casing main body.
　〔第３実施形態〕
　この発明の第３実施形態の空気調和機の室内機は、吹出口を除いて第１実施形態の空気調和機の室内機と同一の構成をしており、図１～図５を援用する。 [Third Embodiment]
The indoor unit of the air conditioner according to the third embodiment of the present invention has the same configuration as the indoor unit of the air conditioner according to the first embodiment except for the air outlet, and FIGS.
　上記第１実施形態では、一方向に吹き出す１つ吹出口１０を備えた室内機について説明したが、この第３実施形態の空気調和機の室内機は、３方向に吹き出す吹出口を備えている。 Although the said 1st Embodiment demonstrated the indoor unit provided with the one outlet 10 which blows off to one direction, the indoor unit of the air conditioner of this 3rd Embodiment is provided with the outlet which blows off to three directions. .
　詳しくは、パネル２の短辺に沿って吹出口１０を設けると共に、パネル２の対向する長辺に沿って第２,第３の吹出口を夫々設けている。 Specifically, the air outlet 10 is provided along the short side of the panel 2, and the second and third air outlets are provided along the opposing long side of the panel 2, respectively.
　上記第３実施形態の空気調和機の室内機は、第１実施形態の空気調和機の室内機と同様の効果を有する。 The indoor unit of the air conditioner of the third embodiment has the same effect as the indoor unit of the air conditioner of the first embodiment.
　上記第１～第３実施形態では、ケーシング本体１とパネル２およびグリル３で構成されたケーシングを備えた室内機について説明したが、ケーシングの形状はこれに限らない。 In the first to third embodiments described above, the indoor unit including the casing constituted by the casing body 1, the panel 2, and the grill 3 has been described, but the shape of the casing is not limited thereto.
　また、上記第１～第３実施形態では、コの字形状の熱交換器４０を備えた室内機について説明したが、熱交換器はこれに限らず、円弧形状やＶ字形状、あるいはＵ字形状などの熱交換器であってもよい。 In the first to third embodiments, the indoor unit including the U-shaped heat exchanger 40 has been described. However, the heat exchanger is not limited to this, and the arc shape, the V shape, or the U shape is used. It may be a heat exchanger such as a shape.
　また、上記第１～第３実施形態では、天井埋め込み型の室内機について説明したが、室内機はこれに限らず、天吊り型の室内機などにこの発明を適用してもよい。 In the first to third embodiments, the ceiling-embedded indoor unit has been described. However, the indoor unit is not limited to this, and the present invention may be applied to a ceiling-mounted indoor unit.
　また、上記第１～第３実施形態では、熱交換器４０は、第１熱交換部４１と、第１熱交換部４１の一端に連なる第２熱交換部４２と、第１熱交換部４１の他端に連なる第３熱交換部４３とを有する熱交換器４０を備えた室内機について説明したが、第１熱交換部と第２熱交換部と第３熱交換部とが分割された熱交換器４０を備えた室内機にこの発明を適用してもよい。 In the first to third embodiments, the heat exchanger 40 includes the first heat exchange unit 41, the second heat exchange unit 42 connected to one end of the first heat exchange unit 41, and the first heat exchange unit 41. Although the indoor unit provided with the heat exchanger 40 having the third heat exchanging portion 43 connected to the other end of the first heat exchanging portion has been described, the first heat exchanging portion, the second heat exchanging portion, and the third heat exchanging portion are divided. You may apply this invention to the indoor unit provided with the heat exchanger 40. FIG.
　この発明の具体的な実施の形態について説明したが、この発明は上記第１～第３実施形態に限定されるものではなく、この発明の範囲内で種々変更して実施することができる。例えば、上記第１～第３実施形態で記載した内容を適宜組み合わせたものを、この発明の一実施形態としてもよい。 Although specific embodiments of the present invention have been described, the present invention is not limited to the first to third embodiments, and various modifications can be made within the scope of the present invention. For example, an appropriate combination of the contents described in the first to third embodiments may be used as one embodiment of the present invention.
　１…ケーシング本体
　１ａ…吸込口
　２…パネル
　３…グリル
　４…フィルタ
　５,６…配管接続部
　７…ドレンソケット
　８…電装品部
　１０…吹出口
　１１…第１壁部
　１２…第２壁部
　１３…第３壁部
　１４…第４壁部
　２０…フラップ
　３０…ターボファン(遠心ファン)
　３１…モータ
　３２…ベルマウス
　４０,１４０…熱交換器
　４１,１４１…第１熱交換部
　４２,１４２…第２熱交換部
　４３,１４３…第３熱交換部
　５０…仕切板(仕切部)
　６０…ドレンパン
　７０…ドレンポンプ DESCRIPTION OF SYMBOLS 1 ... Casing main body 1a ... Suction inlet 2 ... Panel 3 ... Grill 4 ... Filter 5, 6 ... Pipe connection part 7 ... Drain socket 8 ... Electrical component part 10 ... Outlet 11 ... 1st wall part 12 ... 2nd wall part 13 ... 3rd wall part 14 ... 4th wall part 20 ... Flap 30 ... Turbo fan (centrifugal fan)
DESCRIPTION OF SYMBOLS 31 ... Motor 32 ... Bellmouth 40,140 ... Heat exchanger 41,141 ... 1st heat exchange part 42,142 ... 2nd heat exchange part 43,143 ... 3rd heat exchange part 50 ... Partition plate (partition part)
60 ... Drain pan 70 ... Drain pump

Claims (4)

  1. 　ケーシング(１,２,３)と、
    　上記ケーシング(１,２,３)内に配置され、所定の回転方向に回転する遠心ファン(３０)と、
    　上記ケーシング(１,２,３)内かつ上記遠心ファン(３０)の周囲に配置された熱交換器(４０)と、
    　上記熱交換器(４０,１４０)の両端を連結して、上記熱交換器(４０,１４０)と共に上記遠心ファン(３０)を囲う仕切部(５０)と
    を備え、
    　上記遠心ファン(３０)の中心は、上記仕切部(５０)の両端を結ぶ線分の垂直二等分線に対して、上記遠心ファン(３０)と上記仕切部(５０)との間の気流方向における上流側に位置することを特徴とする空気調和機の室内機。     The casing (1, 2, 3),
    A centrifugal fan (30) disposed in the casing (1, 2, 3) and rotating in a predetermined rotational direction;
    A heat exchanger (40) disposed in the casing (1, 2, 3) and around the centrifugal fan (30);
    A partition part (50) for connecting the both ends of the heat exchanger (40, 140) and surrounding the centrifugal fan (30) together with the heat exchanger (40, 140);
    The center of the centrifugal fan (30) is the air flow between the centrifugal fan (30) and the partition (50) with respect to the perpendicular bisector connecting the two ends of the partition (50). An indoor unit for an air conditioner, which is located upstream in a direction.
  2. 　請求項１に記載の空気調和機の室内機において、
    　上記ケーシング(１,２,３)の上記熱交換器(４０,１４０)に対して上記仕切部(５０)と反対の側に吹出口(１０)を設けたことを特徴とする空気調和機の室内機。     In the indoor unit of the air conditioner according to claim 1,
    An air conditioner characterized in that an air outlet (10) is provided on the opposite side of the partition (50) to the heat exchanger (40, 140) of the casing (1, 2, 3). Indoor unit.
  3. 　請求項１または２に記載の空気調和機の室内機において、
    　上記仕切部(５０)は、平面視において両端を結ぶ線分よりも外側に向かって膨出しており、
    　上記仕切部(５０)の両端を結ぶ上記線分と上記仕切部(５０)によって囲まれた領域に上記遠心ファン(３０)の一部が重なっていることを特徴とする空気調和機の室内機。     In the indoor unit of the air conditioner according to claim 1 or 2,
    The partition (50) bulges outward from a line segment connecting both ends in plan view,
    An indoor unit of an air conditioner characterized in that a part of the centrifugal fan (30) overlaps an area surrounded by the line segment connecting both ends of the partition part (50) and the partition part (50). .
  4. 　請求項１から３までのいずれか１つに記載の空気調和機の室内機において、
    　上記熱交換器(４０,１４０)は、平面視において、第１熱交換部(４１,１４１)と、上記第１熱交換部(４１,１４１)の上記遠心ファン(３０)の回転方向の上流側に位置する第２熱交換部(４２,１４２)と、上記第１熱交換部(４１,１４１)の上記遠心ファン(３０)の回転方向の下流側に位置する第３熱交換部(４３,１４３)と、を有し、
    　上記第３熱交換部(４３,１４３)は、上記第２熱交換部(４２,１４２)よりも短いことを特徴とする空気調和機の室内機。     In the indoor unit of the air conditioner according to any one of claims 1 to 3,
    In the plan view, the heat exchanger (40, 140) includes a first heat exchange part (41, 141) and an upstream of the first heat exchange part (41, 141) in the rotational direction of the centrifugal fan (30). A second heat exchanging part (42, 142) located on the side, and a third heat exchanging part (43) located downstream of the first heat exchanging part (41, 141) in the rotational direction of the centrifugal fan (30). , 143), and
    The indoor unit of an air conditioner, wherein the third heat exchange unit (43, 143) is shorter than the second heat exchange unit (42, 142).
PCT/JP2018/014253 2017-05-24 2018-04-03 Indoor unit for air conditioner WO2018216359A1 (en)

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CN110637200A (en) 2019-12-31
EP3614063B1 (en) 2024-04-17
JP6477783B2 (en) 2019-03-06
AU2018272237A1 (en) 2019-12-12
JP2018197632A (en) 2018-12-13
EP3614063A1 (en) 2020-02-26

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