EP3798451B1 - Ventilateur à hélice et unité extérieure de climatiseur dotée d'un ventilateur à hélice - Google Patents

Ventilateur à hélice et unité extérieure de climatiseur dotée d'un ventilateur à hélice

Info

Publication number
EP3798451B1
EP3798451B1 EP19810828.4A EP19810828A EP3798451B1 EP 3798451 B1 EP3798451 B1 EP 3798451B1 EP 19810828 A EP19810828 A EP 19810828A EP 3798451 B1 EP3798451 B1 EP 3798451B1
Authority
EP
European Patent Office
Prior art keywords
blades
propeller fan
blade
axial line
edge side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19810828.4A
Other languages
German (de)
English (en)
Other versions
EP3798451A4 (fr
EP3798451C0 (fr
EP3798451A1 (fr
EP3798451A8 (fr
Inventor
Tsuyoshi Eguchi
Yosihiro Hara
Kazunari Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Thermal Systems 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 Mitsubishi Heavy Industries Thermal Systems Ltd filed Critical Mitsubishi Heavy Industries Thermal Systems Ltd
Publication of EP3798451A1 publication Critical patent/EP3798451A1/fr
Publication of EP3798451A8 publication Critical patent/EP3798451A8/fr
Publication of EP3798451A4 publication Critical patent/EP3798451A4/fr
Application granted granted Critical
Publication of EP3798451C0 publication Critical patent/EP3798451C0/fr
Publication of EP3798451B1 publication Critical patent/EP3798451B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed blades
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • 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
    • F24F1/0029—Axial 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/307—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the tip of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/90—Variable geometry

Definitions

  • the present invention relates to a propeller fan and an outdoor unit for an air conditioner provided with the same.
  • Patent Literature 1 discloses a propeller that sends air, a blower including the propeller, and a heat pump device equipped with the blower.
  • Patent Literature 3 discloses a rotor blade variable pitch axial flow fan used for a boiler in a waiting state.
  • Patent Literature 4 discloses a fan in which each setting angle is gradually larger toward an intermediate part, each from both root and tip parts of a blade.
  • an outdoor heat exchanger is disposed on a side upstream of a propeller fan in an outdoor device of an air conditioner, it is not possible to cover a leading edge side of blades with a bellmouth due for a reason of disposition of the outdoor heat exchanger, and a configuration in which only a trailing edge side of the blades is covered with the bellmouth is employed.
  • design of the propeller fan alone that is, design that takes only the flow in the axial line direction into consideration does not lead to input reduction or noise reduction since the practical flow field is not taken into consideration, and it is thus not possible to sufficiently improve performance of the propeller fan.
  • the present invention was made in view of such circumstances, and an object thereof is to provide a propeller fan capable of improving performance and an outdoor unit for an air conditioner provided with the same.
  • a propeller fan according to claim 1 is provided. According to the propeller fan of claim 1, if the stagger angle of the blades is increased, that is, if the blades are caused to rotate such that the shortest distance from a leading edge and a trailing edge of a blade to an adjacent blade becomes short, the blades are directed in a direction in which the blades do not work, and the pressure thus decreases.
  • the propeller fan may be provided according to claim 2. Accordingly, the trailing edge side surface area increased regions are set to be larger than the leading edge side surface area increased regions to cause the trailing edge side to work more, and a flow in the radial direction is thus suppressed in the trailing edge side surface area increased regions. It is thus possible to curb peeling of a fluid from suction surfaces of the blades on the side of the roots, to uniformize flow amount distribution in a blade height direction (radial direction), and thereby to improve performance.
  • solidity obtained by dividing a chord length of the blades by a pitch is equal to or greater than 0.5 and equal to or less than 1.0, and is preferably equal to or greater than 0.6 and equal to or less than 0.95. Further, the solidity preferably reaches a minimum value at a midpoint position of the blade height.
  • a deflection angle obtained by subtracting an outlet angle from an inlet angle is set to substantially linearly decrease from the side of the roots to the side of the tips of the blades, for example.
  • the dimension of the blades in the axial direction in a case in which the blades are projected to a meridional plane is set to be substantially constant from the roots (blade height ratio of 0%) to a blade height ratio of about 35% and substantially linear increase from the blade height ratio of about 35% to the tips (blade height ratio of 100%).
  • an outdoor unit for an air conditioner includes: the propeller fan according to the aforementioned propeller fan; a heat exchanger that is provided on a side upstream of the propeller fan; and a bellmouth that is provided so as to cause a leading edge side to be exposed and cover a trailing edge side of the propeller fan.
  • Fig. 1 illustrates a sectional view of an outdoor unit 1 for an air conditioner (hereinafter, simply referred to as an "outdoor unit 1") in a side view.
  • the outdoor unit 1 is connected to one or a plurality of indoor units (not illustrated) with a refrigerant pipe.
  • a propeller fan 5 is disposed in a casing 3 of the outdoor unit 1.
  • the casing 3 has a substantially rectangular parallelepiped shape standing on a leg portion 4 placed on a floor surface.
  • the propeller fan 5 is rotated about a center axial line L1 by a motor 7. Since the center axial line L1 extends in the horizontal direction, the propeller fan 5 transversely blows air and causes the air to flow in the horizontal direction.
  • the propeller fan 5 has a shaft portion 6 that is connected to the motor 7, is located on the side of the center axial line L1, and serves as a hub and three blades 8 that are secured to an outer peripheral surface of the shaft portion 6. Note that the number of blades 8 may be two, four, or more. The blades 8 extend outward in the radial direction from roots 8a connected to the shaft portion 6 toward tips 8b.
  • An outdoor heat exchanger 9 is disposed on a side (the right side in the drawing) upstream of the air flow of the propeller fan 5.
  • a bellmouth 10 is disposed on a side (the left side in the drawing) downstream of the air flow of the propeller fan 5.
  • the bellmouth 10 is provided so as not to be present in the surroundings of a leading edge side 5a of the propeller fan 5 and to cover the surroundings of a trailing edge side 5b of the propeller fan 5. Such disposition in which the leading edge side 5a of the propeller fan 5 is exposed from the bellmouth 10 is employed.
  • Fig. 2 illustrates a vertical sectional view of the outdoor unit 1 in Fig. 1 in a plan view.
  • the outdoor heat exchanger 9 is provided from a left side surface 3a on one side to a back surface 3b of the casing 3 and has a shape folded into an L shape. Since such an outdoor heat exchanger 9 with the L shape is employed, an air flow passing through the outdoor heat exchanger 9 and flowing into the propeller fan 5 forms a complicated flow field.
  • a machine chamber 12 in which a compressor that compresses a refrigerant and the like are disposed is provided on the side of the right side surface 3c of the casing 3.
  • the machine chamber 12 and a space in which the air flows due to the propeller fan 5 are sectioned by the sectioning wall 14.
  • Fig. 3 illustrates a front view of the propeller fan 5 when seen in a direction of the center axial line L1.
  • the counterclockwise direction corresponds to a rotation direction R.
  • Leading edges 8c and trailing edges 8d of the blades 8 have such shapes that the blades further stick out on the side of the tips 8b than on the side of the roots 8a.
  • the blades 8 have a sickle shape in which the leading edges 8c are inclined forward in the rotation direction R.
  • Solidity ⁇ of the blades 8 is equal to or greater than 0.5 and equal to or less than 1.0 and is preferably equal to or greater than 0.6 and equal to or less than 0.95. Also, the solidity ⁇ reaches the minimum value at a midpoint position of the blade height.
  • an inclination angle of the leading edges 8c with respect to the direction of the center axial line L1 is an inlet angle ⁇ 1
  • an inclination angle of the trailing edges 8d with respect to the direction of the center axial line L1 is an outlet angle ⁇ 2, as illustrated in the drawing.
  • the horizontal axis represents the blade height ratio while the vertical axis represents the deflection angle ⁇ .
  • the blade height ratio is 0 (0%) at the roots 8a and is 1.0 (100%) at the tips 8b (the dimension of the direction of the center axial line L1).
  • the dimension of the blades 8 in the direction of the center axial line L1 in a case in which the blades 8 are projected to a meridional plane is set so as to be substantially constant from the roots 8a (blade height ratio of 0%) to the blade height ratio of about 35% and to substantially linearly increase from the blade height ratio of about 35% to the tips (blade height ratio of 100%).
  • the horizontal axis represents the blade height ratio while the vertical axis represents the axial width expressed in a non-dimensional manner with the diameter at the tips 8b of the blades 8.
  • Fig. 7 illustrates distribution of the leading edges 8c and the trailing edges 8d of the blades 8 in a case in which the blades 8 are projected to a meridional plane, in the radial direction (horizontal axis) and the axial direction (vertical axis).
  • the axial width is larger on the side of the tips 8b than on the side of the roots 8a of the blades 8 as illustrated in Fig. 6 .
  • Regions (leading edge side surface area increased regions S1) sticking on the side (the lower side in the drawing) upstream of the air flow are present from the side of the roots 8a at which the position of the leading edges 8c in the axial direction is constant to the side of the tips 8b.
  • regions (trailing edge side surface area increased regions S2) sticking on the side (the upper side in the drawing) downstream of the air flow are present from the side of the roots 8a at which the position of the trailing edges 8d in the axial direction is constant to the side of the tips 8b.
  • the trailing edge side surface area increased regions S2 are set to be larger than the leading edge side surface area increased regions S1 (S2 > S1).
  • the trailing edge side surface area increased regions S2 are set to be larger than the leading edge side surface area increased regions S1, the side of the trailing edges 8d is caused to work more, and the flow in the radial direction is thus suppressed in the trailing edge side surface area increased regions S2.
  • Figs. 9 and 10 illustrate a simulation result of the present embodiment.
  • the simulation was conducted under a condition of a positional relationship among the propeller fan 5, the outdoor heat exchanger 9, and the bell mouth 10 as illustrated in Figs. 1 and 2 . In other words, this is not a simulation result of the propeller fan 5 alone.
  • the rotation direction R of the blades 8 in Figs. 9 and 10 is clockwise turning (right turning) unlike in Fig. 3 .
  • Fig. 9 is a simulation result of a typical propeller fan in a comparative example.
  • limit streamlines illustrated on the suction surfaces of the blades 8 are directed in the radial direction.
  • the radial direction component of the limit streamlines illustrated on the suction surfaces of the blades 8 are reduced, and the limit streamlines are in the direction that substantially follows the rotation direction R, as illustrated in Fig. 10 .
  • a second embodiment, which represents the claimed invention, will be described.
  • the present embodiment was achieved by partially changing the shape of the blades in the first example. Thus, description of matters that are common to those in the first example will be omitted.
  • a blade stagger angle ⁇ 1 is an angle formed between a tangential line L2 that is in contact with each blade 8 cut at a predetermined position in the blade height direction on the side of the pressure surface (front surface side) and the direction of the center axial line L1.
  • an intersection between a line connecting a gravity center of the blade 8 to the center axial line L1 with a shortest distance and a blade sectional surface cut at a predetermined position in the blade height direction was defined as a center position A, and performance in a case in which the blade stagger angle ⁇ 1 was changed by causing the blades 8 to rotate about the center position A was compared.
  • Fig. 11 illustrates a case in which the blades are caused to rotate at the position of the blade height ratio of 25% to change the blade attachment angle ⁇ 1.
  • the horizontal axis represents the rotation angle of the blades 8 around the center position A while the vertical axis represents an input ratio of the blades 8, that is, a value obtained by dividing a power required to cause the blades 8 to rotate by a reference value.
  • the input ratio is the smallest at the rotation angle of about +5°.
  • the input ratio is the smallest at the rotation angle of about +10° at the position of the blade height ratio of 50% as illustrated in Fig. 12
  • the input ratio is the smallest at the rotation angle of about +5° at the position of the blade height ratio of 75% as illustrated in Fig. 13 .
  • the blade stagger angle ⁇ is preferably increased by causing the blades 8 to rotate on the + (positive) side to the maximum extent around the center in the blade height direction.
  • Fig. 14 illustrates limit streamlines on the suction surfaces of the blades 8 according to the present embodiment, similarly to Figs. 9 and 10 . It is possible to ascertain from comparison between Figs. 10 and 14 that the radial direction component on the side of the roots 8a further decreases.
  • the present embodiment has the following advantages.
  • the blade stagger angle ⁇ 1 is caused to increase, that is, if the blades 8 are caused to rotate such that the shortest distance from the leading edge 8c and the trailing edge 8d to the adjacent blade 8 becomes short, the blades 8 are directed in a direction in which the blades 8 do not work, and the pressure thus decreases.
  • the blade attachment angle ⁇ 1 is caused to locally increase such that the amount of change from the distribution that substantially linearly increases from the side of the roots toward the side of the tips of the blades 8 has the maximum value at the center position of the blade height with reference to the distribution. It is thus possible to optimize the pressure distribution on the blade surfaces in the radial direction, to reduce required input to the propeller fan 5, and thereby to improve performance.
  • the present invention is not limited thereto and can be used not only for the blade in the first example but also for blades with other shapes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Other Air-Conditioning Systems (AREA)

Claims (3)

  1. Ventilateur à hélice (5) comprenant :
    une partie d'arbre (6) qui tourne autour d'une ligne axiale centrale (L1), et
    une pluralité de pales (8) qui ont des emplantures (8a) raccordées à une périphérie externe de la partie d'arbre et s'étendent dans une direction radiale,
    dans lequel un angle de décalage de pale (β1) des pales (8) par rapport à une direction de la ligne axiale centrale (L1) augmente localement dans une position centrale d'une hauteur de pale de sorte qu'une quantité de changement de distribution qui augmente de manière sensiblement linéaire à partir d'un côté des pieds (8a) des pales jusqu'à un côté des pointes (8b) des pales a une valeur maximum dans la position centrale de la hauteur de pale en référence à la distribution, et caractérisé en ce que :
    l'angle de décalage de pale (β1) change de +10° dans la position centrale de la hauteur de pale.
  2. Ventilateur à hélice (5) selon la revendication 1, dans lequel les pales (8) ont des régions de surface augmentées du côté du bord de fuite (S2) et des régions de surface augmentées du côté du bord d'attaque (S1) de sorte que les dimensions dans une direction de ligne axiale parallèle à la ligne axiale centrale sont plus grandes sur un côté des pointes (8b) que sur un côté des pieds dans un cas dans lequel les pales font saillie dans un plan méridional comprenant la ligne axiale centrale, et
    les régions de surface augmentées du côté du bord de fuite (S2) sont plus grandes que les régions de surface augmentées du côté du bord d'attaque (S1).
  3. Unité extérieure (1) pour un climatiseur comprenant :
    le ventilateur à hélice (5) selon la revendication 1 ou la revendication 2 ;
    un échangeur de chaleur (9) qui est prévu sur un côté en amont du ventilateur à hélice ; et
    un évasement (10) qui est prévu afin d'amener un côté de bord d'attaque à être exposé et recouvrir un côté de bord de fuite du ventilateur à hélice.
EP19810828.4A 2018-05-30 2019-05-24 Ventilateur à hélice et unité extérieure de climatiseur dotée d'un ventilateur à hélice Active EP3798451B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018103741A JP7150480B2 (ja) 2018-05-30 2018-05-30 プロペラファン及びこれを備えた空気調和機用室外ユニット
PCT/JP2019/020593 WO2019230582A1 (fr) 2018-05-30 2019-05-24 Ventilateur à hélice et unité extérieure de climatiseur dotée d'un ventilateur à hélice

Publications (5)

Publication Number Publication Date
EP3798451A1 EP3798451A1 (fr) 2021-03-31
EP3798451A8 EP3798451A8 (fr) 2021-05-19
EP3798451A4 EP3798451A4 (fr) 2021-11-03
EP3798451C0 EP3798451C0 (fr) 2025-11-12
EP3798451B1 true EP3798451B1 (fr) 2025-11-12

Family

ID=68698358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810828.4A Active EP3798451B1 (fr) 2018-05-30 2019-05-24 Ventilateur à hélice et unité extérieure de climatiseur dotée d'un ventilateur à hélice

Country Status (3)

Country Link
EP (1) EP3798451B1 (fr)
JP (1) JP7150480B2 (fr)
WO (1) WO2019230582A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116050028B (zh) * 2023-03-30 2023-06-20 陕西空天信息技术有限公司 叶轮叶片确定方法、计算机可读存储介质和电子设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5396512A (en) * 1977-02-01 1978-08-23 Torin Corp Axiallflow disc wheel
JPS62265499A (ja) * 1986-05-13 1987-11-18 Mitsubishi Heavy Ind Ltd 動翼可変ピツチ軸流フアン
JPH08284887A (ja) * 1995-04-11 1996-10-29 Toyo Radiator Co Ltd ファン
EP0945625B1 (fr) 1998-03-23 2004-03-03 SPAL S.r.l. Ventilateur à courant axial
JP2002048094A (ja) 2000-08-07 2002-02-15 Komatsu Ltd ファン
JP2005121310A (ja) * 2003-10-17 2005-05-12 Hitachi Ltd 空気調和装置
JP4467952B2 (ja) 2003-11-10 2010-05-26 東芝キヤリア株式会社 プロペラファン、これを用いた空気調和機用室外ユニット
JP5079063B2 (ja) 2010-08-25 2012-11-21 三菱電機株式会社 プロペラおよび送風機並びにヒートポンプ装置
JP6132380B2 (ja) 2012-02-06 2017-05-24 ミネベアミツミ株式会社 軸流ファンのインペラ構造
JP6048024B2 (ja) * 2012-09-18 2016-12-21 ダイキン工業株式会社 プロペラファン
JP5980180B2 (ja) * 2013-08-08 2016-08-31 三菱電機株式会社 軸流ファン、及び、その軸流ファンを有する空気調和機

Also Published As

Publication number Publication date
JP7150480B2 (ja) 2022-10-11
EP3798451A4 (fr) 2021-11-03
EP3798451C0 (fr) 2025-11-12
JP2019206958A (ja) 2019-12-05
EP3798451A1 (fr) 2021-03-31
WO2019230582A1 (fr) 2019-12-05
EP3798451A8 (fr) 2021-05-19

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