[go: up one dir, main page]

US20050260083A1 - Linear motor and linear compressor having the same - Google Patents

Linear motor and linear compressor having the same Download PDF

Info

Publication number
US20050260083A1
US20050260083A1 US10/944,630 US94463004A US2005260083A1 US 20050260083 A1 US20050260083 A1 US 20050260083A1 US 94463004 A US94463004 A US 94463004A US 2005260083 A1 US2005260083 A1 US 2005260083A1
Authority
US
United States
Prior art keywords
inner core
piston
core assembly
magnetic field
compressor according
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.)
Abandoned
Application number
US10/944,630
Other languages
English (en)
Inventor
Seung Park
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Gwangju Electronics Co 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 Samsung Gwangju Electronics Co Ltd filed Critical Samsung Gwangju Electronics Co Ltd
Assigned to SAMSUNG GWANGJU ELECTRONICS CO., LTD. reassignment SAMSUNG GWANGJU ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PARK, SEUNG IL
Publication of US20050260083A1 publication Critical patent/US20050260083A1/en
Abandoned legal-status Critical Current

Links

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
    • F04B35/045—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 using solenoids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H35/00—Baths for specific parts of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/02—Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths
    • A61H33/028—Means for producing a flow of gas, e.g. blowers, compressors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0119—Support for the device
    • A61H2201/0138—Support for the device incorporated in furniture
    • A61H2201/0149—Seat or chair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2203/00—Additional characteristics concerning the patient
    • A61H2203/04—Position of the patient
    • A61H2203/0425—Sitting on the buttocks
    • A61H2203/0431—Sitting on the buttocks in 90°/90°-position, like on a chair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/08—Trunk
    • A61H2205/086—Buttocks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/08—Trunk
    • A61H2205/087—Genitals

Definitions

  • the present invention relates to linear compressors, and, more particularly, to linear compressors having a linear motor for driving a piston, the linear motor comprising cores and a magnet.
  • compressors serve to compress the refrigerant, and discharge it to the outside.
  • One kind of such compressors is linear compressors wherein a linear motor, exhibiting a rectilinear motion, is used to reciprocate a piston for compressing a refrigerant.
  • Conventional linear compressors comprise a compressing unit for compressing a refrigerant, and a driving unit for providing power to the compressing unit. Both the compressing unit and the driving unit are installed inside a hermetic casing.
  • the compressing unit for compressing the refrigerant, includes a cylinder block internally defining a compression chamber, and a piston reciprocating inside the compression chamber.
  • the driving unit is a linear motor, which is rectilinearly movable by receiving electric power.
  • a linear motor includes an inner core surrounding the outside of the cylinder block, an outer core spaced apart from the inner core by a prescribed distance so that it surrounds the outer circumference of the inner core, the outer core having a coil wound therein, and a moving member fixed to the piston so that it is interposed between the inner and outer cores.
  • the moving member is installed with a magnet for driving the moving member and the piston through electromagnetic interaction with the inner and outer cores.
  • the conventional linear compressors however, have a problem in that the inner core and the magnet are installed to the cylinder block and the moving member, respectively, resulting in complexity in their overall assembling process, and deterioration of productivity.
  • Another problem of the conventional linear compressors is that there exists the need for an air gap, having a prescribed distance, between the inner and outer cores due to the moving member to be disposed therebetween, resulting in deterioration in efficiency of the linear motor. Especially, if the moving member is deformed by an exterior shock, it may prevent normal operation of the linear motor.
  • the present invention provides a linear compressor comprising: a piston reciprocating inside a compression chamber for compressing a refrigerant; an outer core spaced apart from the piston to surround it, and having a coil wound therein for producing a magnetic field; and an inner core assembly fixed to an outer circumference of the piston, wherein the inner core assembly includes: an inner core serving as a propagation passage of the magnetic field produced inside the outer core; and a permanent magnet for reciprocating the piston through electromagnetic interaction with the inner and outer cores.
  • the permanent magnet may be provided at an outer circumference of the inner core.
  • the inner core assembly may further include a molded material obtained through injection molding, the molded material serving to fix the inner core and the permanent magnet to each other.
  • the inner core assembly may further include an insulation member disposed between the inner core and the magnet for the electrical insulation therebetween.
  • the piston may have first and second support portions formed at the outer circumference thereof for axially supporting both ends of the inner core assembly, respectively.
  • the piston may be dividable into a first piston member formed with the first support portion, and a second piston member formed with the second support portion.
  • one of the piston members may be formed with a coupling protrusion, and the other one of the piston members may be formed with a coupling recess, into which the coupling protrusion will be inserted.
  • the present invention provides a linear motor comprising: an outer core spaced apart from an output shaft to surround it, and serving to drive the output shaft, the outer core having a coil wound therein for producing a magnetic field; and an inner core assembly fixed to an outer circumference of the output shaft, wherein the inner core assembly includes: an inner core serving as a propagation passage of the magnetic field produced inside the outer core; and a permanent magnet for reciprocating the output shaft through electromagnetic interaction with the inner and outer cores.
  • the inner core assembly may further include a molded material obtained through injection molding, the molded material serving to fix the inner core and the permanent magnet to each other.
  • FIG. 1 is a sectional view illustrating the general structure of a linear compressor in accordance with the present invention
  • FIG. 2 is a sectional view illustrating an inner core assembly of the linear compressor in accordance with the present invention.
  • FIG. 3 is an exploded perspective view illustrating the coupling relationship between the inner core assembly and a piston of the linear compressor in accordance with the present invention.
  • FIG. 1 illustrating a linear compressor in accordance with the present invention, it comprises, inside a hermetic casing 10 , a compressing unit 20 for compressing a refrigerant, and a driving unit 40 for driving the compressing unit 20 .
  • the compressing unit 20 includes a cylinder block 21 defining a compression chamber 21 a, and a piston 30 reciprocating inside the compression chamber 21 a . Coupled to one side of the cylinder block 21 is a cylinder head 22 , which defines a suction chamber 22 a and a discharge chamber 22 b.
  • the driving unit 40 is a linear motor, which includes an outer core 41 fixed to the cylinder block 21 in such a manner that it is spaced apart form the piston 30 by a prescribed distance to surround it, a coil 42 adapted to produce a magnetic field by receiving electric power, and an inner core assembly 50 fixed to the outer circumference of the piston 30 .
  • the outer core 41 is formed by circumferentially stacking a plurality of metal sheets, and the coil 42 is annularly wound inside the outer core 41 .
  • the inner core assembly 50 has a hollow cylindrical shape, and is fixed to the outer circumference of the piston 30 .
  • Such an inner core assembly 50 includes an inner core 51 , and a magnet 52 .
  • the inner core 51 is formed by circumferentially stacking metal sheets, and serves as a propagation passage of the magnetic field produced inside the outer core 41 .
  • the magnet 52 is fixed to the outer circumference of the inner core 51 so that it vertically reciprocates through electromagnetic interaction with the inner and outer cores 51 and 41 .
  • the inner core 51 and the magnet 52 of the inner core assembly 50 are integrally fixed to each other by making use of a molded material 53 obtained by injection molding.
  • an insulating member 54 such as an insulating sheet, insulating film, etc. is fitted therebetween.
  • the piston 30 is formed with first and second supporting portions 31 a and 32 a , which radially and outwardly extend from the outer circumference of the piston 30 .
  • These supporting portions 31 a and 32 a are provided in a pair, and serve to support upper and lower ends of the inner core assembly 50 .
  • the piston 30 is divided into a first piston member 31 formed with the first supporting portion 31 a , and a second piston member 32 formed with the second supporting portion 32 a .
  • the first and second piston members 31 and 32 are coupled to each other after the inner core assembly 50 is fitted around one of the first and second piston members 31 or 32 .
  • first and second piston members 31 and 32 For the firm coupling of the first and second piston members 31 and 32 , at an upper end of the second piston member 32 is formed an upwardly-protruding coupling protrusion 32 b , and at a lower end of the first piston member 31 is formed a coupling recess 31 b , into which the coupling protrusion 32 b will be inserted.
  • the coupling protrusion 32 b is press-fitted into the coupling recess 31 b .
  • the diameter of the coupling protrusion 32 b is slightly larger than the diameter of the coupling recess 31 b
  • the top of the coupling protrusion 32 b is conically tapered for securing smooth initial insertion thereof.
  • the magnet 52 and the inner core 51 are integrally molded to form the inner core assembly 50 through injection molding. This has an effect of minimizing an air gap between the inner and outer cores 51 and 41 , resulting in improvement in driving efficiency of the linear motor.
  • the present invention provides a linear compressor wherein an inner core and a magnet are integrally molded to form an inner core assembly through injection molding, and the inner core assembly is fixed to the outer circumference of a piston.
  • Such a configuration has an effect of eliminating the need for a moving member, which is used in conventional compressors, and consequently can minimize an air gap between the inner core and an outer core, resulting in improvement in output efficiency of a linear motor as well as driving efficiency of the compressor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Power Engineering (AREA)
  • Public Health (AREA)
  • Rehabilitation Therapy (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Linear Motors (AREA)
US10/944,630 2004-05-21 2004-09-17 Linear motor and linear compressor having the same Abandoned US20050260083A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2004-36267 2004-05-21
KR1020040036267A KR100552586B1 (ko) 2004-05-21 2004-05-21 리니어 모터 및 이를 갖춘 리니어 압축기

Publications (1)

Publication Number Publication Date
US20050260083A1 true US20050260083A1 (en) 2005-11-24

Family

ID=35375321

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/944,630 Abandoned US20050260083A1 (en) 2004-05-21 2004-09-17 Linear motor and linear compressor having the same

Country Status (6)

Country Link
US (1) US20050260083A1 (zh)
JP (1) JP2005330953A (zh)
KR (1) KR100552586B1 (zh)
CN (1) CN1699750A (zh)
BR (1) BRPI0404450A (zh)
IT (1) ITMI20041942A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060222532A1 (en) * 2004-12-22 2006-10-05 Lg Electronics Inc. Reciprocating compressor
US20060250032A1 (en) * 2005-05-06 2006-11-09 Lg Electronics Inc. Linear compressor
US20070152517A1 (en) * 2005-11-30 2007-07-05 Lg Electronics Inc. Linear motor and linear compressor using the same
US20080240950A1 (en) * 2003-05-30 2008-10-02 Mcgill Ian Campbell Compressor improvements
CN103835912A (zh) * 2012-11-26 2014-06-04 海尔集团公司 线性压缩机
WO2025235778A1 (en) * 2024-05-08 2025-11-13 Chillshark, Inc. Cold water immersion system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070075907A (ko) * 2006-01-16 2007-07-24 엘지전자 주식회사 리니어 압축기의 리니어 모터
KR101248464B1 (ko) * 2006-05-03 2013-03-28 엘지전자 주식회사 왕복동식 압축기
KR101411402B1 (ko) * 2012-09-07 2014-06-26 대호 (주) 복동 유압실린더의 구조
KR102244373B1 (ko) * 2014-07-07 2021-04-26 엘지전자 주식회사 리니어 압축기 및 리니어 모터
CN107387362B (zh) * 2017-05-31 2020-01-07 青岛海尔智能技术研发有限公司 容积可调式直线压缩机及其控制方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728591A (en) * 1928-08-21 1929-09-17 Brauer Walter Pump piston
US4389849A (en) * 1981-10-02 1983-06-28 Beggs James M Administrator Of Stirling cycle cryogenic cooler
US5208498A (en) * 1990-09-28 1993-05-04 Aisien Seiki Kabushiki Kaisha Linear actuator
US5734209A (en) * 1990-01-10 1998-03-31 Uniflo Oilcorp, Ltd. Linear electric motor and method of using and constructing same
US5831353A (en) * 1994-10-17 1998-11-03 Bolding; Vance E. Modular linear motor and method of constructing and using same
US6203292B1 (en) * 1997-04-20 2001-03-20 Matsushita Refrigeration Company Oscillation-type compressor
US6765319B1 (en) * 2003-04-11 2004-07-20 Visteon Global Technologies, Inc. Plastic molded magnet for a rotor
US20050046282A1 (en) * 2003-08-27 2005-03-03 Sanyo Denki Co., Ltd. Movable assembly for cylinder type linear motor
US6879064B2 (en) * 2002-07-26 2005-04-12 Matsushita Refrigeration Company Linear motor and linear-motor based compressor
US6977474B2 (en) * 2002-07-16 2005-12-20 Matsushita Electric Industrial Co., Ltd. Control system for a linear vibration motor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728591A (en) * 1928-08-21 1929-09-17 Brauer Walter Pump piston
US4389849A (en) * 1981-10-02 1983-06-28 Beggs James M Administrator Of Stirling cycle cryogenic cooler
US5734209A (en) * 1990-01-10 1998-03-31 Uniflo Oilcorp, Ltd. Linear electric motor and method of using and constructing same
US5208498A (en) * 1990-09-28 1993-05-04 Aisien Seiki Kabushiki Kaisha Linear actuator
US5831353A (en) * 1994-10-17 1998-11-03 Bolding; Vance E. Modular linear motor and method of constructing and using same
US6203292B1 (en) * 1997-04-20 2001-03-20 Matsushita Refrigeration Company Oscillation-type compressor
US6977474B2 (en) * 2002-07-16 2005-12-20 Matsushita Electric Industrial Co., Ltd. Control system for a linear vibration motor
US6879064B2 (en) * 2002-07-26 2005-04-12 Matsushita Refrigeration Company Linear motor and linear-motor based compressor
US6765319B1 (en) * 2003-04-11 2004-07-20 Visteon Global Technologies, Inc. Plastic molded magnet for a rotor
US20050046282A1 (en) * 2003-08-27 2005-03-03 Sanyo Denki Co., Ltd. Movable assembly for cylinder type linear motor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080240950A1 (en) * 2003-05-30 2008-10-02 Mcgill Ian Campbell Compressor improvements
US8684706B2 (en) * 2003-05-30 2014-04-01 Fisher & Paykel Appliances Limited Connecting rod for a linear compressor
US20060222532A1 (en) * 2004-12-22 2006-10-05 Lg Electronics Inc. Reciprocating compressor
US7381033B2 (en) * 2004-12-22 2008-06-03 Lg Electronics Inc. Reciprocating compressor
US20060250032A1 (en) * 2005-05-06 2006-11-09 Lg Electronics Inc. Linear compressor
EP1724466A1 (en) * 2005-05-06 2006-11-22 Lg Electronics Inc. Linear compressor
US7626289B2 (en) 2005-05-06 2009-12-01 Lg Electronics Inc. Linear compressor
US20070152517A1 (en) * 2005-11-30 2007-07-05 Lg Electronics Inc. Linear motor and linear compressor using the same
CN103835912A (zh) * 2012-11-26 2014-06-04 海尔集团公司 线性压缩机
WO2025235778A1 (en) * 2024-05-08 2025-11-13 Chillshark, Inc. Cold water immersion system

Also Published As

Publication number Publication date
BRPI0404450A (pt) 2006-01-10
CN1699750A (zh) 2005-11-23
JP2005330953A (ja) 2005-12-02
KR20050111098A (ko) 2005-11-24
KR100552586B1 (ko) 2006-02-20
ITMI20041942A1 (it) 2005-01-13

Similar Documents

Publication Publication Date Title
US7075199B2 (en) Reciprocating motor and reciprocating compressor having the same
US7381033B2 (en) Reciprocating compressor
CN100513781C (zh) 用于固定往复式压缩机的马达定子的结构
US9261088B2 (en) Linear compressor
KR102240028B1 (ko) 리니어 압축기 및 리니어 모터
JPH11252846A (ja) リニア圧縮機の固定子
US20050260083A1 (en) Linear motor and linear compressor having the same
US7157814B2 (en) Stator for reciprocating motor and manufacturing method thereof
US7617594B2 (en) Apparatus for fixing a stator of a motor of a reciprocal compressor
JP3540727B2 (ja) リニアコンプレッサ
US20030080633A1 (en) Reciprocating motor
KR200175868Y1 (ko) 리니어압축기
EP1676351B1 (en) Annular stack of lamination elements
US20050232790A1 (en) Linear compressor
KR100783414B1 (ko) 압축기용 왕복동모터의 가동자 구조
KR100746415B1 (ko) 리니어 압축기의 리니어 모터 고정구조
KR200297308Y1 (ko) 리니어압축기
KR101149674B1 (ko) 리니어 압축기의 리니어 모터
US20040223861A1 (en) Linear compressor
KR100500832B1 (ko) 리니어 압축기의 보빈
KR101204547B1 (ko) 리니어 압축기의 리니어 모터
US20050111999A1 (en) Linear compressor
KR20110006183A (ko) 왕복동식 압축기의 피스톤 및 그 제조방법
KR20120123962A (ko) 왕복동 모터 및 이를 구비한 왕복동식 압축기
KR19980050609A (ko) 리니어 압축기의 모터구조

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG GWANGJU ELECTRONICS CO., LTD., KOREA, REPU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARK, SEUNG IL;REEL/FRAME:015809/0876

Effective date: 20040830

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION