WO2019163450A1 - Turboréacteur à double flux, et unité d'intérieur pour climatiseur - Google Patents

Turboréacteur à double flux, et unité d'intérieur pour climatiseur Download PDF

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Publication number
WO2019163450A1
WO2019163450A1 PCT/JP2019/003192 JP2019003192W WO2019163450A1 WO 2019163450 A1 WO2019163450 A1 WO 2019163450A1 JP 2019003192 W JP2019003192 W JP 2019003192W WO 2019163450 A1 WO2019163450 A1 WO 2019163450A1
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WO
WIPO (PCT)
Prior art keywords
main plate
turbofan
rotation axis
indoor unit
air conditioner
Prior art date
Application number
PCT/JP2019/003192
Other languages
English (en)
Japanese (ja)
Inventor
大佑 深堀
中井　聡
田中　英志
貴士 柏原
恒久 佐柳
丸山　要
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
Publication of WO2019163450A1 publication Critical patent/WO2019163450A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F24F1/0022—Centrifugal or radial 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
    • 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 disclosure relates to an indoor unit of a turbo fan and an air conditioner.
  • Patent Document 1 discloses a centrifugal multiblade fan in which the discharge direction of blown air is slightly in the axial direction from the radial direction.
  • a turbofan according to an aspect of the present disclosure is provided.
  • a main plate that rotates about a rotation axis;
  • An annular shroud disposed at a distance from the main plate in the axial direction of the rotary shaft and provided with a suction port;
  • a plurality of blade members provided between the main plate and the shroud, The maximum diameter of the main plate is larger than the inner diameter of the suction port of the shroud and smaller than the maximum diameter of the plurality of blade members.
  • the main plate is A plate-like main body portion on which the plurality of blade members are disposed; A frustoconical convex portion erected in the center of the main body,
  • the main body has an annular portion extending in a direction intersecting the rotation axis in a cross section along a plane including the rotation axis,
  • the convex part has a conical surface part connected to the main body part, In a cross section along the plane including the rotation axis, an angle formed by the rotation shaft and the annular portion of the main body is larger than an angle formed by the rotation shaft and the conical surface portion of the convex portion.
  • the annular portion of the main body of the main plate extends in a direction perpendicular to the rotation axis in a cross section along a plane including the rotation axis.
  • the blowing performance as a turbo fan can be improved.
  • Each of the plurality of blade members has a pressure surface and a suction surface,
  • the minimum radius of the portion adjacent to the pressure surface of the main plate is larger than the minimum radius of the portion adjacent to the suction surface of the main plate.
  • the distance in the radial direction of the rotary shaft between the turbofan and the heat exchanger is unevenly distributed in the circumferential direction of the rotary shaft.
  • the ratio A / B of the minimum distance A in the radial direction of the rotating shaft between the turbofan and the heat exchanger to the dimension B in the axial direction of the second heat exchange portion of the heat exchanger is: 0 ⁇ A / B ⁇ 1 It satisfies the following conditions.
  • a motor that rotates about the rotation axis and includes a shaft coupled to the main plate, a rotor coupled to the shaft, and a stator; The rotor and the stator of the motor do not overlap with the turbo fan in a side view.
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1 is a perspective view of a turbo fan according to a first embodiment. It is a disassembled perspective view of the turbo fan which concerns on 1st Embodiment. It is a bottom view of the turbo fan which concerns on 1st Embodiment.
  • FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. It is a perspective view of a turbofan concerning a 2nd embodiment of this indication. It is a top view of the main board concerning a 2nd embodiment. It is a perspective view of the turbo fan concerning a 3rd embodiment of this indication.
  • the indoor unit 1 of this embodiment is a low-capacity indoor unit suitable for air conditioning in a narrow space such as a washroom or a kitchen.
  • the rated cooling capacity of the indoor unit 1 of the present embodiment is 0.8 kw.
  • FIG. 1 is a perspective view of an indoor unit 1 of an air conditioner according to a first embodiment of the present disclosure as viewed obliquely from below.
  • the indoor unit 1 is a ceiling-embedded indoor unit.
  • the casing body 10 has a box shape with an opening at the bottom, and is installed by being inserted into an installation opening provided on a ceiling (not shown).
  • the blower outlet 11a extended along the short side of the panel 11 is provided in one side of the longitudinal direction of the panel 11.
  • the flap 20 is attached to the blower outlet 11a of the panel 11 so that rotation is possible.
  • the air outlet 11 a is closed by the flap 20.
  • the indoor unit 1 includes a drain socket 21 and pipe connection portions 22 and 23.
  • the drain socket 21 and the pipe connecting portions 22 and 23 are provided so as to protrude from the casing body 10.
  • a drain hose (not shown) is connected to the drain socket 21 from the outside.
  • a refrigerant pipe (not shown) is connected to the pipe connecting portions 22 and 23 from the outside.
  • FIG. 2 is a bottom view of the indoor unit 1 with the panel 11 (shown in FIG. 1), the drain pan 62 (shown in FIG. 3), etc. removed.
  • the same components as those in FIG. 1 are denoted by the same reference numerals.
  • the indoor unit 1 of the present embodiment includes a turbo fan 100 that rotates about a rotation axis R and a U-shaped heat exchange that is disposed outside the rotation axis R of the turbo fan 100 in the radial direction. And an arcuate partition plate 40 that connects both ends of the heat exchanger 30. Pipe connection portions 22 and 23 are connected to one end of the heat exchanger 30.
  • the distance L in the radial direction of the rotation axis R between the turbofan 100 and the heat exchanger 30 has a non-uniform distribution in the circumferential direction of the rotation axis R.
  • the indoor unit 1 includes, in the casing body 10, a motor 50 that drives the turbo fan 100, a bell mouth 60 that guides air to the turbo fan 100, and the bell mouth 60 and the grill 12. And a disposed filter 61.
  • the indoor unit 1 also includes a drain pan 62 inside the casing body 10 and below the heat exchanger 30 and the partition plate 40.
  • the motor 50 of this embodiment is an inner rotor type motor.
  • the motor 50 rotates around the rotation axis R, and is arranged so as to surround the shaft 51 connected to the turbofan 100, the rotor 52 connected to the shaft 51, and the rotor 52 from the outside in the radial direction of the rotation axis R.
  • the stator 53 is provided.
  • the rotor 52 and the stator 53 of the motor 50 are arranged so as not to overlap the turbofan 100 when viewed from the direction orthogonal to the axial direction of the rotation axis R.
  • turbofan 100 (Turbo fan)
  • a turbofan 100 according to the present embodiment will be described with reference to the accompanying drawings.
  • FIG. 4 is a perspective view of the turbofan 100 according to the present embodiment.
  • the fitting recess 122 shown in FIG. 5 of the shroud 120 is omitted.
  • FIG. 5 is an exploded perspective view of the turbofan 100 according to the present embodiment.
  • the main plate 110, the shroud 120, and the blade member 130 of the turbofan 100 of the present embodiment are members that are individually injection-molded using a thermoplastic resin.
  • the shroud 120 of this embodiment is provided with a suction recess 121 and a fitting recess 122 into which the blade member 130 can be fitted.
  • the number of the fitting recesses 122 provided in the peripheral portion of the shroud 120 is equal to the number of the blade members 130 (seven in this embodiment) at equal intervals in the circumferential direction of the rotation axis R.
  • the fitting recessed part 122 is formed in step shape so that it may have a different insertion depth.
  • the blade member 130 is a plate-like member, and has a positive pressure surface 130a that pushes out the wind and a negative pressure surface 130b that is the opposite surface of the positive pressure surface 130a.
  • the blade member 130 has a main plate side end portion 131 configured to be fitted to a fitting portion 111b provided on the main plate 110, and a shroud side configured to be fitted to a fitting concave portion 122 provided on the shroud 120. And an end 132.
  • the blade member 130 is attached to the main plate 110 such that the rear end edge 131a of the main plate side end 131 protrudes from the main plate 110 in the radial direction of the rotation axis R (see FIG. 4). Further, the blade member 130 of this embodiment is attached to the shroud 120 such that the rear end edge 132a of the shroud side end portion 132 is connected to the outer peripheral edge 120a of the shroud 120.
  • the maximum diameter D1 of the main plate 110 is a diameter of a virtual circle VA that is a locus of the outermost peripheral portion of the main plate 110 when the main plate 110 is rotated about the rotation axis R.
  • the maximum diameter D1 of the main plate 110 matches the diameter of the main plate 110.
  • the maximum diameter D3 of the blade member 130 is the diameter of the virtual circle VB that is the locus of the outermost peripheral portion of the blade member 130 when the blade member 130 is rotated about the rotation axis R.
  • the annular portion 111 a of the main body portion 111 of the main plate 110 extends in a direction intersecting with the rotation axis R in a cross section along the plane including the rotation axis R.
  • the annular portion 111a of the main body 111 extends in a direction orthogonal to the rotation axis R. That is, the angle ⁇ 1 formed by the rotation axis R and the direction in which the annular portion 111a of the main body 111 extends is 90 °.
  • the angle ⁇ 2 formed by the rotation axis R and the direction in which the conical surface portion 112a of the convex portion 112 extends forms the rotation axis R and the direction in which the annular portion 111a of the main body 111 extends. It is smaller than the angle ⁇ 1.
  • the radial distance L (shown in FIG. 2) of the rotation axis R between the turbofan 100 and the heat exchanger 30 is unevenly distributed in the circumferential direction of the rotation axis R as described above.
  • the indoor unit 1 of the air conditioner of the present embodiment has a ratio A / B with respect to the dimension B in the axial direction of the rotation axis R of the second heat exchange part 30b of the heat exchanger 30 of the minimum distance A among the distances L. But, 0 ⁇ A / B ⁇ 1 It is configured to satisfy the following conditions.
  • the air drawn from the suction port 121 of the shroud 120 is guided to the main plate 110 by setting the maximum diameter D1 of the main plate 110 to an appropriate range (D2 ⁇ D1). Since it blows off to the centrifugal direction, the fall of the ventilation performance as the turbo fan 100 can be suppressed.
  • the maximum diameter D1 of the main plate 110 is set to an appropriate range (D1 ⁇ D3), a part of the air blown from the turbofan 100 is moved along the rotation axis R with respect to the plane orthogonal to the rotation axis R. The air can be blown out in a direction inclined to the opposite side to the suction port 121 in the axial direction (hereinafter referred to as “oblique direction”).
  • the turbofan 100 When the maximum diameter D1 of the main plate 110 is smaller than the inner diameter D2 of the suction port 121 of the shroud 120, a part of the air sucked from the suction port 121 of the shroud 120 is not guided to the main plate 110, and the turbofan 100 Is blown out. For this reason, the air volume of the air blown off in the direction crossing the rotation axis R is reduced, and the blowing performance as the turbo fan 100 is reduced. Further, when the maximum diameter D1 of the main plate 110 is larger than the maximum diameter D3 of the blade member 130, the turbo fan 100 cannot increase the air volume of the blown-off air blown in the oblique direction.
  • the blade member 130 is attached to the main plate 110 such that the rear end edge 131a of the main plate side end 131 protrudes radially outward from the main plate 110 in the rotational axis R.
  • the air volume of the blown air blown in the oblique direction can be increased.
  • the annular portion 111a of the main body 111 of the main plate 110 extends in a direction orthogonal to the rotation axis R in a longitudinal section along a plane including the rotation axis R.
  • the air sucked from the suction port 121 of the shroud 120 is guided in the centrifugal direction by the annular portion 111 a of the main body portion 111 of the main plate 110.
  • the ventilation performance as the turbo fan 100 is securable.
  • the indoor unit 1 is a low-capacity indoor unit as in the present embodiment, it is necessary to reduce the product size. Therefore, the components surrounding the turbo fan such as a heat exchanger and a partition plate And the distance between the turbofan is small.
  • a low-capacity indoor unit is equipped with a general turbo fan that blows the blown air in the centrifugal direction, the blown air blown from the turbo fan is not sufficiently diffused until it reaches the heat exchanger. Since the blown air passes through only a part of the heat exchanger, there are problems with ventilation resistance and air conditioning performance.
  • the pressure around the turbo fan increases, and discrete frequency noise corresponding to the rotational speed of the turbo fan is generated. is there.
  • the turbo fan 100 can blow out part of the blown air in the oblique direction. For this reason, the blown air from the turbo fan 100 passes through the first heat exchanging part 30a of the heat exchanger 30 arranged on the outer side in the radial direction of the rotation axis R of the turbo fan 100, and the second heat exchanging part 30b. Pass through. That is, the amount of air passing through the second heat exchange unit 30b increases. Thereby, the bias of the wind through which the air blown from the turbo fan 100 passes through the entire heat exchanger 30 can be reduced, the ventilation resistance can be reduced, and the heat exchange between the heat exchanger 30 and the blown air can be promoted. Can be improved.
  • the turbo fan 100 can blow a part of the blown air in the oblique direction, so that the blown air can be dispersed in the axial direction of the rotation axis R. it can. Thereby, the average wind speed of the blown-out air blown out from the turbo fan 100 can be reduced, an increase in pressure around the turbo fan 100 can be suppressed, and discrete frequency noise corresponding to the rotational speed of the turbo fan 100 can be suppressed.
  • the turbo fan 100 of this embodiment has the same configuration as the turbo fan 100 of the first embodiment except for the shape of the main plate.
  • the main plate 210 of the turbofan 100 of the present embodiment has a shape that protrudes radially outward of the rotation axis R at a portion where the rear end edge 131 a of the main plate side end 131 of the blade member 130 is connected. Have.
  • FIG. 9 is a plan view of the main plate 210 of the present embodiment.
  • the blade member 130 is schematically indicated by a two-dot chain line.
  • the same components as those in FIGS. 1 to 8 are denoted by the same reference numerals.
  • the main plate 210 is divided into a first portion 210a adjacent to each positive pressure surface 130a of the blade member 130 and a second portion 210b adjacent to each negative pressure surface 130b of the blade member 130.
  • the boundary between the first portion 210a and the second portion 210b of the main plate 210 between the two blade members 130 adjacent to each other in the circumferential direction of the rotation axis R is two adjacent to each other in the circumferential direction of the rotation axis R.
  • This is a virtual intermediate line G representing the intermediate position of the blade member 130.
  • the minimum radius RA of the first portion 210a of the main plate 210 is larger than the minimum radius RB of the second portion 210b of the main plate 210.
  • the minimum radius RA of the first portion 210 a of the main plate 210 is the minimum distance from the rotation axis R to the outer shape of the main plate 210 in the first portion 210 a of the main plate 210.
  • the minimum radius RB of the second portion 210b of the main plate 210 is the minimum distance from the rotation axis R to the outer shape of the main plate 210 in the second portion 210b of the main plate 210.
  • the maximum diameter D1 of the main plate 210 is that of the main plate 210 when the main plate 210 is rotated about the rotation axis R as described above. This is the diameter of the virtual circle VA that is the locus of the outermost peripheral part 210c.
  • the blown air can be blown out in a direction (oblique direction) inclined to the opposite side to the suction port 121 in the axial direction. For this reason, the air volume of the blown-out air blown in the oblique direction can be increased while suppressing the deterioration of the blowing performance as the turbo fan 100.
  • the turbo fan 100 of the present embodiment has the same configuration as the turbo fan 100 of the first embodiment except for the shape of the blade member.
  • FIG. 10 is a perspective view of the turbo fan 100 of the present embodiment.
  • the fitting recess 122 shown in FIG. 5 of the shroud 120 is omitted.
  • the blade member 330 of the present embodiment is attached to the main plate 110 so that the rear end edge 331 a of the main plate side end portion 331 coincides with the outer peripheral edge of the main plate 110.
  • the turbo fan 100 of this embodiment has the same effects as the turbo fan 100 of the first embodiment.
  • blade members there are seven blade members, but the number of blade members is not limited to this.
  • turbo fan according to the present disclosure may be applied to an air conditioner other than an indoor unit.
  • the motor for driving the turbo fan according to the present disclosure is not limited to the inner rotor type, and may be an outer rotor type motor.
  • Top surface part 112c Protrusion part 113 ... Boss 120 ... Shroud 120a ... Outer peripheral edge 121 ... Suction port 122 ... Fitting recessed part 130 ... Blade member 130a ... Positive pressure surface 130b ... Negative pressure surface 131 ... Main plate Side end 131a ... Rear end 132 ... Shroud End 132a ... rear edge 210 ... main plate 210a ... first portion 210 b ... second portion 330 ... blade member 331 ... main plate side end portion 331a ... rear edge R ... rotating shaft

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

L'invention concerne un turboréacteur à double flux (100) comprenant : une plaque principale (110) tournant autour d'un axe de rotation (R) ; un carénage annulaire (120) disposé à une certaine distance de la plaque principale (110) dans la direction de l'axe de rotation (R) et comportant une ouverture d'admission (121) ; et une pluralité d'éléments pales (130) disposés entre la plaque principale (110) et le carénage (120). Le diamètre maximal (D1) de la plaque principale (110) est supérieur au diamètre interne (D2) de l'ouverture d'admission (121) du carénage (120) et est inférieur au diamètre maximal (D3) des éléments pales (130).
PCT/JP2019/003192 2018-02-22 2019-01-30 Turboréacteur à double flux, et unité d'intérieur pour climatiseur WO2019163450A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-029980 2018-02-22
JP2018029980A JP6673385B2 (ja) 2018-02-22 2018-02-22 ターボファン、及び空気調和機の室内機

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Publication Number Publication Date
WO2019163450A1 true WO2019163450A1 (fr) 2019-08-29

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6961038B1 (ja) * 2020-05-12 2021-11-05 三菱電機株式会社 遠心ファンおよび回転電機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4414359Y1 (fr) * 1966-05-27 1969-06-18
JPS473032Y1 (fr) * 1969-10-09 1972-02-01
JPS53153506U (fr) * 1977-05-11 1978-12-02
JP2007239567A (ja) * 2006-03-08 2007-09-20 Daikin Ind Ltd 遠心送風機用羽根車のブレード、ブレード支持回転体、遠心送風機用羽根車、及び遠心送風機用羽根車の製造方法
JP2010019262A (ja) * 2009-10-19 2010-01-28 Daikin Ind Ltd 送風機及びこれを用いた空気調和機並びに空気清浄機
JP2011252672A (ja) * 2010-06-03 2011-12-15 Mitsubishi Electric Corp 空気調和機の室内機

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3879764B2 (ja) * 2004-07-14 2007-02-14 ダイキン工業株式会社 遠心送風機

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4414359Y1 (fr) * 1966-05-27 1969-06-18
JPS473032Y1 (fr) * 1969-10-09 1972-02-01
JPS53153506U (fr) * 1977-05-11 1978-12-02
JP2007239567A (ja) * 2006-03-08 2007-09-20 Daikin Ind Ltd 遠心送風機用羽根車のブレード、ブレード支持回転体、遠心送風機用羽根車、及び遠心送風機用羽根車の製造方法
JP2010019262A (ja) * 2009-10-19 2010-01-28 Daikin Ind Ltd 送風機及びこれを用いた空気調和機並びに空気清浄機
JP2011252672A (ja) * 2010-06-03 2011-12-15 Mitsubishi Electric Corp 空気調和機の室内機

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JP2019143572A (ja) 2019-08-29

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