公开(公告)号：US20250052240A1

公开(公告)日：2025-02-13

申请号：US18928944

申请日：2024-10-28

Applicant: Danfoss Commercial Compressors

Inventor： Patrice BONNEFOI ,  Wanzhen LIU ,  David GENEVOIS ,  Jean Francois HEITZ

IPC: F04C18/02 ,  F04C23/00 ,  F04C23/02 ,  F04C28/28 ,  F04C29/02 ,  F04C29/04

Abstract: A scroll compressor (2) includes a sealed housing (3); a compression unit (11), having a fixed scroll (12) and an orbiting scroll (13); a drive shaft (18) configured to drive the orbiting scroll (13) to move orbitally, the drive shaft (18) being capable of rotating about an axis of rotation; a synchronous reluctance motor (15) configured to drive the drive shaft (18) to rotate about the axis of rotation, the synchronous reluctance motor (15) comprising a rotor (16) coupled to the drive shaft (18) and a stator (17) disposed around the rotor (16), and the rotor (16) including a ferrite permanent magnet (23); a compressor control apparatus (31) configured to control the scroll compressor (2) to operate; a lubricating oil tank (27), formed in a bottom portion of the sealed housing (3); a heating apparatus configured to heat lubricating oil stored in the lubricating oil tank (27); and an oil temperature sensor (28) disposed in the lubricating oil tank (27).

公开(公告)号：US12215687B2

公开(公告)日：2025-02-04

申请号：US18573467

申请日：2022-06-20

Applicant: Danfoss Commercial Compressors

Inventor： Patrice Bonnefoi ,  Wanzhen Liu ,  David Genevois ,  Jean Francois Heitz

IPC: F04C18/02 ,  F04C23/00 ,  F04C23/02 ,  F04C28/28 ,  F04C29/02 ,  F04C29/04

Abstract: A scroll compressor (2) includes a sealed housing (3); a compression unit (11), having a fixed scroll (12) and an orbiting scroll (13); a drive shaft (18) configured to drive the orbiting scroll (13) to move orbitally, the drive shaft (18) being capable of rotating about an axis of rotation; a synchronous reluctance motor (15) configured to drive the drive shaft (18) to rotate about the axis of rotation, the synchronous reluctance motor (15) comprising a rotor (16) coupled to the drive shaft (18) and a stator (17) disposed around the rotor (16), and the rotor (16) including a ferrite permanent magnet (23); a compressor control apparatus (31) configured to control the scroll compressor (2) to operate; a lubricating oil tank (27), formed in a bottom portion of the sealed housing (3); a heating apparatus configured to heat lubricating oil stored in the lubricating oil tank (27); and an oil temperature sensor (28) disposed in the lubricating oil tank (27).

公开(公告)号：US20240287988A1

公开(公告)日：2024-08-29

申请号：US18573467

申请日：2022-06-20

Applicant: Danfoss Comemrcial Compressors

Inventor： Patrice BONNEFOI ,  Wanzhen LIU ,  David GENEVOIS ,  Jean Francois HEITZ

IPC: F04C18/02 ,  F04C23/00 ,  F04C23/02 ,  F04C28/28 ,  F04C29/02 ,  F04C29/04

CPC classification number: F04C18/0215 ,  F04C23/008 ,  F04C23/02 ,  F04C28/28 ,  F04C29/02 ,  F04C29/04 ,  F04C2240/40 ,  F04C2240/81 ,  F04C2270/195

Abstract: A scroll compressor (2) includes a sealed housing (3); a compression unit (11), having a fixed scroll (12) and an orbiting scroll (13); a drive shaft (18) configured to drive the orbiting scroll (13) to move orbitally, the drive shaft (18) being capable of rotating about an axis of rotation; a synchronous reluctance motor (15) configured to drive the drive shaft (18) to rotate about the axis of rotation, the synchronous reluctance motor (15) comprising a rotor (16) coupled to the drive shaft (18) and a stator (17) disposed around the rotor (16), and the rotor (16) including a ferrite permanent magnet (23); a compressor control apparatus (31) configured to control the scroll compressor (2) to operate; a lubricating oil tank (27), formed in a bottom portion of the sealed housing (3); a heating apparatus configured to heat lubricating oil stored in the lubricating oil tank (27); and an oil temperature sensor (28) disposed in the lubricating oil tank (27).

公开(公告)号：US12031535B2

公开(公告)日：2024-07-09

申请号：US17271413

申请日：2020-01-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Jun Chida ,  Kiyofumi Shirouzu

IPC: F04B49/10 ,  F04B35/04 ,  F04B39/12 ,  F04B39/14 ,  F04B49/06 ,  F04C28/06 ,  F04C28/28 ,  H02K11/25 ,  H02K11/26 ,  H02K11/27

CPC classification number: F04B49/10 ,  F04B35/04 ,  F04B39/121 ,  F04B39/14 ,  F04B49/06 ,  F04C28/06 ,  F04C28/28 ,  F04C2270/19 ,  H02K11/25 ,  H02K11/26 ,  H02K11/27

Abstract: A compressor includes a casing accommodating a compression mechanism, a detection device having a detection face configured to detect an internal state of the casing, an elastic member, and a cover mounted to the casing to cover the detection device and a part of the elastic member. The detection face is located opposite an outer peripheral face of the casing. The elastic member includes a first portion overlapping the detection device and a second portion not overlapping the detection device, as seen in plan view. The cover is configured to press the second portion of the elastic member against the casing, with the first portion of the elastic member pressing the detection device against the casing.

公开(公告)号：US20240218878A1

公开(公告)日：2024-07-04

申请号：US18400023

申请日：2023-12-29

Applicant: Danfoss (Tianjin) Ltd.

Inventor： Yingke SUN ,  Wanzhen LIU ,  Qingyue MENG ,  Li YAO ,  Shizhong JI

IPC: F04C28/08 ,  F04C18/02 ,  F04C28/28 ,  F04D29/66 ,  G01H1/00

CPC classification number: F04C28/08 ,  F04C18/0215 ,  F04C28/28 ,  F04D29/661 ,  G01H1/003 ,  F04C2270/051 ,  F04C2270/125 ,  F04C2270/86

Abstract: A control method includes: a detection step of: detecting a vibration amplitude of the compressor; a determination step of: determining whether the detected vibration amplitude of the compressor is greater than or equal to a predetermined threshold; and a speed adjustment step of changing a switching frequency of a frequency converter or/and modulate a frequency of the compressor if the detected vibration amplitude of the compressor is greater than or equal to the predetermined threshold. A compressor system is also provided by an embodiment. The control method and the compressor system make it convenient to know whether abnormal vibration of the compressor occurs, and can avoid the resonance frequency range.

公开(公告)号：US11988211B2

公开(公告)日：2024-05-21

申请号：US17263957

申请日：2019-08-01

Applicant: Leybold GmbH

Inventor： Joeri Coeckelbergs ,  Vicente Paul Guerrero Lule

IPC: F04C28/08 ,  F04C25/02 ,  F04C28/28

CPC classification number: F04C28/08 ,  F04C25/02 ,  F04C28/28 ,  F04C2240/81

Abstract: A vacuum pump includes a housing having an inlet and an outlet, at least one rotor arranged in the housing configured to convey a gaseous medium from the inlet to the outlet, a motor configured to rotate the rotor, a control device connected to the motor configured to control the motor, and at least one sensor connected to the control device. The at least one sensor is configured to sense at least one operating parameter of the vacuum pump. The control device comprises a correlation module. The correlation module is configured to correlate the sensed at least one operating parameter with at least one critical parameter. The motor is controlled on the basis of the at least one critical parameter.

公开(公告)号：US11933296B2

公开(公告)日：2024-03-19

申请号：US17428195

申请日：2020-02-18

Applicant: Edwards Limited

Inventor： Peter Anthony McBrien

IPC: F04C18/02 ,  F04C28/28

CPC classification number: F04C18/0215 ,  F04C28/28 ,  F04C2270/70

Abstract: A safety device for an orbital pump has first and second interleaved parts which are operable to follow an orbital path with respect to each other, the safety device comprising: a first member fixable with respect to the first interleaved part; and a second member fixable with respect to the second interleaved part, the second member defining an aperture into which the first member is receivable, the aperture being dimensioned to prevent movement of the first interleaved part with respect to the second interleaved part beyond the orbital path. In this way, the members of the safety device help to prevent the moving components of the pump contacting, thereby preventing damage.

公开(公告)号：US11933291B2

公开(公告)日：2024-03-19

申请号：US17628466

申请日：2020-07-28

Applicant: Hitachi Industrial Equipment Systems Co., Ltd.

Inventor： Tomofumi Okubo ,  Norinaga Suzuki ,  Kiyomi Tashima ,  Akihiro Takanuki

IPC: F04B49/10 ,  F04B49/02 ,  F04B49/06 ,  F04B51/00 ,  F04C28/28 ,  G01R31/26 ,  G05B23/02 ,  F04C18/16 ,  H02P29/02

CPC classification number: F04B49/10 ,  F04B49/02 ,  F04B49/065 ,  F04B51/00 ,  F04C28/28 ,  G01R31/2642 ,  G05B23/0283 ,  F04C18/16 ,  F04C2240/40 ,  F04C2240/808 ,  F04C2270/025 ,  F04C2270/16 ,  F04C2270/18 ,  F04C2270/19 ,  F04C2270/80 ,  H02P29/02

Abstract: A compressor, a monitoring system and a method of monitoring a compressor that make it possible to monitor the remaining lifetime of a semiconductor element of a motor control system while the processing load is reduced are provided. A compressor (1) includes: a motor control system (10) that controls the rotation speed of a motor (2); a compressor body (3) that compresses air by being driven by the motor (2); a pressure sensor (20) that is provided on the discharge side of the compressor body (3); and a running controller (11) that performs switching between load running and no-load running on the basis of the pressure sensed by the pressure sensor (20). A motor controller (26) of the motor control system (10) calculates a relative temperature of a semiconductor element relative to a reference temperature by using a temperature of the semiconductor element sensed by a temperature sensor (27) at the time of switching from no-load running to load running, and calculates an amount of change in a remaining lifetime of the semiconductor element corresponding to the relative temperature of the semiconductor element, whereby monitoring the remaining lifetime of the semiconductor element.

公开(公告)号：US20240068474A1

公开(公告)日：2024-02-29

申请号：US18552809

申请日：2022-03-29

Applicant: Leybold GmbH

Inventor： Dirk Schiller ,  Freddy Schoenwald

IPC: F04C28/28 ,  F04C18/16 ,  F04C25/02 ,  F04C29/00

CPC classification number: F04C28/28 ,  F04C18/16 ,  F04C25/02 ,  F04C29/005 ,  F04C2240/81 ,  F04C2270/13 ,  F04C2270/16

Abstract: A pair of intermeshing gears for multi-shaft vacuum pumps, comprising a first running gear and a second running gear is provided, wherein at least the first running gear comprises a first and a second gearwheel, respectively. The first and the second gearwheel are axially arranged in direct contact, wherein the first gearwheel comprises a predetermined number of first cogs of same dimension and the second gearwheel comprises a predetermined number of second cogs, wherein the predetermined number of second cogs is at least one. All of the predetermined number of first cogs have a dimension larger than the dimension of the predetermined number of second cogs to a predetermined amount. The first gearwheel is made of a material with a first elastic modulus. The second gearwheel is made of a material with a second elastic modulus, wherein the first and the second elastic modulus are different.

公开(公告)号：US11873814B2

公开(公告)日：2024-01-16

申请号：US17624388

申请日：2020-07-01

Applicant: Gebr. Becker GmbH

Inventor： Stefan Beierlein ,  Sven Hilfert

IPC: F04C18/344 ,  F04C28/28 ,  F04C25/02

CPC classification number: F04C18/3441 ,  F04C28/28 ,  F04C25/02 ,  F04C2240/81 ,  F04C2270/165 ,  F04C2270/80

Abstract: The invention relates to a rotary slide assembly and to a method for monitoring the wear of one or more slides in a rotary slide assembly, comprising a rotary slide rotor and one or more slide receiving areas for the slide(s) in the rotary slide rotor. The wear state of the one or more slides is detected during the operation or during a standstill of the rotary slide assembly. For this purpose, the slide(s) or one or more corresponding slide receiving areas in interaction with the one or more slides are used to generate or request an electric or electronic signal.