WO2022201934A1 - 圧縮機 - Google Patents
圧縮機 Download PDFInfo
- Publication number
- WO2022201934A1 WO2022201934A1 PCT/JP2022/005140 JP2022005140W WO2022201934A1 WO 2022201934 A1 WO2022201934 A1 WO 2022201934A1 JP 2022005140 W JP2022005140 W JP 2022005140W WO 2022201934 A1 WO2022201934 A1 WO 2022201934A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- housing
- compressor
- straight line
- electric motor
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
Definitions
- scroll compressors are known as a type of compressor mounted on automobiles.
- a scroll compressor includes a compressor body that compresses a refrigerant, an electric motor that drives the compressor body, and a housing that accommodates the compressor body and the electric motor.
- An electric motor has a rotor rotatable around an axis and a stator covering the rotor from the outer peripheral side.
- the stator has an annular shape centered on the axis, and is fixed to the inner peripheral surface of the housing by bolting or shrink fitting (for example, Patent Document 1 below).
- Mounting legs are formed on the outer peripheral surface of the housing for fixing the scroll compressor to a predetermined position in the automobile. Therefore, the portion where the mounting leg is formed has higher rigidity than the other portion.
- a pair of mounting legs are provided at diametrically opposed positions on the housing, and one further at the other position.
- the first straight line connecting a pair of diametrically opposed mounting legs and the second straight line orthogonal to this first straight line are the short or long axes of the elliptical mode vibration. known to occur.
- the stator also generates elliptical mode vibrations due to its annular shape.
- the vibration When the vibration modes of the housing and the stator as described above are superimposed, the vibration may be dispersed and the noise of the compressor may increase.
- the present disclosure has been made to solve the above problems, and aims to provide a compressor with further reduced noise.
- a compressor according to the present disclosure has a compressor body, a rotating shaft extending along an axis, an electric motor for driving the compressor body by the rotating shaft, and and a housing that accommodates the compressor body and the electric motor, the electric motor having a rotor rotatable about the axis and an annular stator centering on the axis.
- the housing has a housing body and a pair of high-rigidity portions provided outside the housing body at positions diametrically opposed to the axis with respect to the axis and having higher rigidity than other portions,
- the stator is fixed to the inner peripheral surface of the housing at a plurality of fixing points provided at positions different from intersections of the housing with a first straight line connecting the pair of high-rigidity portions and a second straight line orthogonal to the first straight line.
- FIG. 1 is a cross-sectional view showing the configuration of a compressor according to an embodiment of the present disclosure
- FIG. FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1
- FIG. 4 is a cross-sectional view showing a modification of the compressor according to the embodiment of the present disclosure
- FIG. 1 A scroll compressor 100 as a compressor according to an embodiment of the present disclosure will be described below with reference to FIGS. 1 and 2.
- FIG. 1 the scroll compressor 100 is used, for example, to compress refrigerant in an air conditioner for vehicles.
- the scroll compressor 100 includes a shaft 1 (rotating shaft), a motor 2 (electric motor), a compressor body 3, a housing 4, a cover 5, an upper bearing 6, and a lower bearing 7. and a drive bush 8.
- the shaft 1 extends along the axis O and is rotatable around the axis O.
- the shaft 1 has a shaft body 10 , a small diameter portion 11 , a large diameter portion 12 and an eccentric shaft portion 13 .
- the shaft body 10 has a cylindrical shape centered on the axis O.
- the shaft body 10 has a uniform diameter dimension over the entire area in the direction of the axis O.
- a rotor 21 (described later) of the motor 2 is attached to the outer peripheral surface of the shaft body 10 .
- a small diameter portion 11 is provided on one side (lower side) of the shaft body 10 in the direction of the axis O.
- the small-diameter portion 11 has a columnar shape centered on the axis O and has a diameter smaller than that of the shaft body 10 .
- the small diameter portion 11 is supported from one side (lower side) in the direction of the axis O by a lower bearing 7 attached to the housing 4 .
- a large-diameter portion 12 is provided on the other side (upper side) of the shaft body 10 in the direction of the axis O.
- the large-diameter portion 12 has a cylindrical shape centered on the axis O and has a larger diameter than the shaft body 10 .
- the large diameter portion 12 is radially supported by an upper bearing 6 fixed to the housing 4 .
- An eccentric shaft portion 13 is provided further above the large diameter portion 12 (on the other side in the direction of the axis O).
- the eccentric shaft portion 13 protrudes from the large diameter portion 12 toward the other side in the axis O direction.
- the eccentric shaft portion 13 has a columnar shape centered on an eccentric shaft A extending parallel to the axis O and radially displaced from the axis O. As shown in FIG. Therefore, when the shaft 1 rotates, the eccentric shaft portion 13 revolves (revolves) around the axis O. As shown in FIG.
- a motor 2 provides rotational driving force to the shaft 1 .
- the motor 2 has a rotor 21 and a stator 22 .
- the rotor 21 is fixed to the shaft body 10 .
- the rotor 21 has a cylindrical shape centered on the axis O. As shown in FIG. Although not shown in detail, the rotor 21 has a plurality of magnets.
- the stator 22 covers the rotor 21 from the outer peripheral side.
- the stator 22 is formed by stacking a plurality of steel plates in the direction of the axis O, and further by winding a copper wire (forming a coil).
- Compressor main body 3 is driven by rotation of shaft 1 by motor 2 .
- the compressor body 3 has a fixed scroll 31 and a movable scroll 32 .
- the fixed scroll 31 has a disk-shaped first end plate 31a centered on the axis O, and a first spiral plate 31b provided on one side (lower side) of the first end plate 31a in the direction of the axis O. is doing.
- the first spiral plate 31b extends spirally around the axis O.
- the fixed scroll 31 is fixed to the housing 4 .
- the movable scroll 32 has a disk-shaped second end plate 32a, a second spiral plate 32b provided on the other side (upper side) of the second end plate 32a in the direction of the axis O, and a boss portion 32c. there is
- the second spiral plate 32b extends spirally around the axis O. As shown in FIG.
- the dimension of the second spiral plate 32b in the direction of the axis O is the same as the dimension of the first spiral plate 31b in the direction of the axis O described above.
- the boss portion 32c is a cylindrical portion that protrudes from the second end plate 32a toward one side (lower side) in the direction of the axis O.
- the boss portion 32 c is attached to the eccentric shaft portion 13 of the shaft 1 via the drive bush 8 .
- the eccentric shaft portion 13 turns around the axis O
- turning force is transmitted to the movable scroll 32 through the drive bush 8 .
- the movable scroll 32 turns around the axis O.
- the rotation (rotation) of the movable scroll 32 itself is restricted by an Oldham ring.
- the volume of the compression chamber described above changes over time, and the refrigerant is compressed midway through the compression chamber from the outside to the inside in the radial direction, increasing the pressure.
- the high pressure refrigerant is guided into the housing 4 through the opening H formed in the first end plate 31 a of the fixed scroll 31 .
- the housing 4 has a housing body 41 and mounting legs 42 (high rigidity portion).
- the housing body 41 is a bottomed cylindrical container that houses the shaft 1 , the motor 2 , and the compressor body 3 .
- the mounting leg 42 is a member for fixing the scroll compressor 100 at a predetermined position.
- a pair of mounting legs 42 are provided at opposite positions in a diametrical direction passing through the axis O, as shown in FIG.
- the portion of the housing body 41 where the mounting leg 42 is provided has a higher rigidity than the other portion due to the increased thickness.
- the cover 5 is attached to one side (lower side) of the housing body 41 in the direction of the axis O. Although not shown in detail, inside the cover 5, electrical components including an IPM (intelligent power module) and the like are accommodated.
- IPM intelligent power module
- stator 22 of the motor 2 is fixed to the inner peripheral surface 4s of the housing 4 by shrink fitting. More specifically, the outer peripheral surface 22s of the stator 22 is tightly fitted to the inner peripheral surface 4s of the housing 4 by means of four fixed points P arranged in a square shape at regular intervals. .
- a straight line connecting the pair of mounting legs 42 described above is called a first straight line L1
- a straight line orthogonal to the first straight line L1 is called a second straight line L2.
- the housing body 41 Since the housing body 41 has a circular cross section, elliptical mode vibrations with the first straight line L1 and the second straight line L2 as major axes or minor axes are likely to occur.
- the four fixing points P are arranged at positions different from the intersections of the first straight line L1 and the second straight line L2 and the housing body 41, respectively. In other words, the four fixed points P are not located on the first straight line L1 and the second straight line L2. Further, these fixed points P are provided at positions rotated by 45° with respect to the first straight line L1 and the second straight line L2. Therefore, any fixing point P is geometrically farthest from the intersection of the first straight line L1, the second straight line L2 and the housing body 41. As shown in FIG.
- the four fixing points P are arranged at positions different from the intersections of the first straight line L1 and the second straight line L2 and the housing body 41, respectively.
- the minor axis and the major axis of the elliptical mode of the housing body 41 and the elliptical mode of the stator 22 do not overlap each other. This can reduce the possibility that the vibration will spread. As a result, the noise of scroll compressor 100 can be reduced.
- the electric motor is generally driven by 3-phase alternating current. Therefore, if the number of fixed points is a multiple of 3, there is a possibility that vibrations excited by electromagnetic forces based on the respective currents will resonate or develop over time. However, according to the above configuration, since four fixed points are provided in a square shape instead of multiples of three, such a possibility can be reduced.
- the stator 22 is shrink-fitted to the housing 4 at the fixed point P.
- the form of the fixing point P is not limited to shrink fitting, and it is also possible to employ a configuration in which the stator 22 is fastened to the housing 4 with bolts.
- the compressor according to the first aspect has a compressor body 3 and a rotating shaft (shaft 1) extending along the axis O, and an electric motor (motor 2) and a housing 4 having a cylindrical shape centered on the axis O and housing the compressor main body 3 and the electric motor, the electric motor comprising a rotor 21 rotatable around the axis O and a , and an annular stator 22 centered on the axis O.
- the housing 4 is provided at a position diametrically opposed to the axis O on the outside of the housing body 41 and the housing body 41 .
- the stator 22 has a first straight line L1 connecting the pair of high-rigidity portions and a second straight line L1 perpendicular to the first straight line L1. It is fixed to the inner peripheral surface of the housing 4 at a plurality of fixing points P provided at positions different from the intersection of the straight line L2 and the housing 4 .
- the elliptical mode of vibration of the housing 4 and the elliptical mode of vibration of the stator 22 do not overlap each other. This can reduce the possibility that the vibration will spread.
- the plurality of fixed points P are arranged at equal intervals in the circumferential direction with respect to the axis O. As shown in FIG.
- the plurality of fixed points P are arranged in a square shape.
- the electric motor is generally driven by 3-phase alternating current. Therefore, if the number of fixed points P is a multiple of 3, there is a possibility that vibrations excited by electromagnetic forces based on the respective currents will develop over time.
- four fixed points P are provided in a square shape instead of multiples of three, so such a possibility can be reduced.
- the plurality of fixed points P are arranged in a regular pentagonal shape.
- the electric motor is generally driven by 3-phase alternating current. Therefore, if the number of fixed points P is a multiple of 3, there is a possibility that vibrations excited by electromagnetic forces based on the respective currents will develop over time. However, according to the above configuration, five fixed points P are provided in a regular pentagonal shape instead of multiples of three, so such a possibility can be reduced.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
Description
本願は、2021年3月24日に日本に出願された特願2021-050355号について優先権を主張し、その内容をここに援用する。
以下、本開示の実施形態に係る圧縮機としてのスクロール圧縮機100について、図1と図2を参照して説明する。スクロール圧縮機100は、例えば車両用の空調装置の冷媒を圧縮するために用いられる。図1に示すように、スクロール圧縮機100は、シャフト1(回転軸)と、モータ2(電動機)と、圧縮機本体3と、ハウジング4と、カバー5と、上部軸受6と、下部軸受7と、ドライブブッシュ8と、を備えている。
シャフト1は、軸線Oに沿って延びるとともに、当該軸線O回りに回転可能とされている。シャフト1は、シャフト本体10と、小径部11と、大径部12と、偏芯軸部13と、を有している。シャフト本体10は、軸線Oを中心とする円柱状をなしている。シャフト本体10は、軸線O方向の全域にわたって一様な径寸法を有している。シャフト本体10の外周面には、モータ2のロータ21(後述)が取り付けられている。
モータ2は、シャフト1に回転駆動力を与える。モータ2は、ロータ21と、ステータ22と、を有している。ロータ21は、シャフト本体10に固定されている。ロータ21は、軸線Oを中心とする円筒状をなしている。詳しくは図示しないが、ロータ21は、複数の磁石を有している。ステータ22は、このロータ21を外周側から覆っている。ステータ22は、複数の鋼板を軸線O方向に積層し、さらに銅線を巻回する(コイルを構成する)ことで形成されている。ステータ22に通電することで、ステータ22とロータ21との間に電磁力が発生し、ロータ21に軸線O回りの回転力が与えられる。これにより、シャフト1が軸線O回りに回転する。
圧縮機本体3は、モータ2によるシャフト1の回転によって駆動する。圧縮機本体3は、固定スクロール31と、可動スクロール32と、を有している。固定スクロール31は、軸線Oを中心とする円盤状の第一端板31aと、この第一端板31aの軸線O方向一方側(下側)に設けられた第一渦巻板31bと、を有している。第一渦巻板31bは、軸線Oを中心として渦巻状に延びている。固定スクロール31は、ハウジング4に固定されている。
図2に示すように、モータ2のステータ22は、ハウジング4の内周面4sに対して、焼き嵌めによって固定されている。より詳細には、ステータ22の外周面22sは、ハウジング4の内周面4sに対して、等間隔をあけて正方形状に配置された4つの固定点Pによって締まり嵌めされた状態となっている。ここで、上述した一対の取付脚42を結ぶ直線を第一直線L1と呼び、当該第一直線L1に直交する直線を第二直線L2と呼ぶ。
ここで、スクロール圧縮機100の運転中には、ハウジング本体41に加えて、ステータ22にも上述した楕円モードの振動が生じることが知られている。ハウジング本体41の楕円モードと、ステータ22の楕円モードとが重畳されてしまった場合(つまり、これら2つの楕円モードの長軸方向と短軸方向とが互いに一致している場合)、両者の振動が合成されてしまい、最終的に発散してしまう虞がある。
各実施形態に記載の圧縮機(スクロール圧縮機100)は、例えば以下のように把握される。
1 シャフト
2 モータ
3 圧縮機本体
4 ハウジング
4s 内周面
5 カバー
6 上部軸受
7 下部軸受
8 ドライブブッシュ
10 シャフト本体
11 小径部
12 大径部
13 偏芯軸部
21 ロータ
22 ステータ
22s 外周面
31 固定スクロール
31a 第一端板
31b 第一渦巻板
32 可動スクロール
32a 第二端板
32b 第二渦巻板
32c ボス部
41 ハウジング本体
42 取付脚
A 偏芯軸
H 開口部
L1 第一直線
L2 第二直線
O 軸線
P 固定点
Claims (4)
- 圧縮機本体と、
軸線に沿って延びる回転軸を有し、該回転軸によって該圧縮機本体を駆動する電動機と、
前記軸線を中心とする円筒状をなし、前記圧縮機本体と前記電動機とを収容するハウジングと、
を備え、
前記電動機は、
前記軸線回りに回転可能なロータと、
前記軸線を中心とする環状のステータと、
を有し、
前記ハウジングは、
ハウジング本体と、
該ハウジング本体の外側で前記軸線に対する直径方向に対向する位置に設けられ、他の部分よりも剛性の高い一対の高剛性部と、
を有し、
前記ステータは、前記一対の高剛性部を結ぶ第一直線、及び該第一直線に直交する第二直線と前記ハウジングの交点とは異なる位置に設けられた複数の固定点で前記ハウジングの内周面に固定されている圧縮機。 - 前記複数の固定点は、前記軸線に対する周方向に等間隔をあけて配置されている請求項1に記載の圧縮機。
- 前記複数の固定点は、正方形状に配置されている請求項1又は2に記載の圧縮機。
- 前記複数の固定点は、正五角形状に配置されている請求項1又は2に記載の圧縮機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112022001679.5T DE112022001679T5 (de) | 2021-03-24 | 2022-02-09 | Kompressor |
US18/281,725 US20240151232A1 (en) | 2021-03-24 | 2022-02-09 | Compressor |
CN202280023317.XA CN117083459A (zh) | 2021-03-24 | 2022-02-09 | 压缩机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021050355A JP2022148607A (ja) | 2021-03-24 | 2021-03-24 | 圧縮機 |
JP2021-050355 | 2021-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022201934A1 true WO2022201934A1 (ja) | 2022-09-29 |
Family
ID=82798274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/005140 WO2022201934A1 (ja) | 2021-03-24 | 2022-02-09 | 圧縮機 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240151232A1 (ja) |
JP (1) | JP2022148607A (ja) |
CN (2) | CN117083459A (ja) |
DE (1) | DE112022001679T5 (ja) |
WO (1) | WO2022201934A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002233103A (ja) * | 2001-02-05 | 2002-08-16 | Denso Corp | 車両用回転電機 |
KR20070000310A (ko) * | 2005-06-27 | 2007-01-02 | 엘지전자 주식회사 | 밀폐형 회전식 압축기의 내부고정 구조 |
WO2015163039A1 (ja) * | 2014-04-22 | 2015-10-29 | サンデンホールディングス株式会社 | 電動圧縮機 |
JP2019097279A (ja) * | 2017-11-21 | 2019-06-20 | 三菱重工業株式会社 | 電動コンプレッサー |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2719819B2 (ja) | 1989-02-15 | 1998-02-25 | アイチ―エマソン電機株式会社 | 密閉型電動圧縮機 |
JP2021050355A (ja) | 2020-12-21 | 2021-04-01 | 住友化学株式会社 | ゴム組成物の製造方法 |
-
2021
- 2021-03-24 JP JP2021050355A patent/JP2022148607A/ja active Pending
-
2022
- 2022-02-09 CN CN202280023317.XA patent/CN117083459A/zh active Pending
- 2022-02-09 WO PCT/JP2022/005140 patent/WO2022201934A1/ja active Application Filing
- 2022-02-09 DE DE112022001679.5T patent/DE112022001679T5/de active Pending
- 2022-02-09 US US18/281,725 patent/US20240151232A1/en active Pending
- 2022-02-21 CN CN202220348119.8U patent/CN217206888U/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002233103A (ja) * | 2001-02-05 | 2002-08-16 | Denso Corp | 車両用回転電機 |
KR20070000310A (ko) * | 2005-06-27 | 2007-01-02 | 엘지전자 주식회사 | 밀폐형 회전식 압축기의 내부고정 구조 |
WO2015163039A1 (ja) * | 2014-04-22 | 2015-10-29 | サンデンホールディングス株式会社 | 電動圧縮機 |
JP2019097279A (ja) * | 2017-11-21 | 2019-06-20 | 三菱重工業株式会社 | 電動コンプレッサー |
Also Published As
Publication number | Publication date |
---|---|
JP2022148607A (ja) | 2022-10-06 |
CN217206888U (zh) | 2022-08-16 |
CN117083459A (zh) | 2023-11-17 |
DE112022001679T5 (de) | 2024-02-22 |
US20240151232A1 (en) | 2024-05-09 |
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