KR100552586B1 - Linear motor and linear compressor having the same - Google Patents

Linear motor and linear compressor having the same Download PDF

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Publication number
KR100552586B1
KR100552586B1 KR1020040036267A KR20040036267A KR100552586B1 KR 100552586 B1 KR100552586 B1 KR 100552586B1 KR 1020040036267 A KR1020040036267 A KR 1020040036267A KR 20040036267 A KR20040036267 A KR 20040036267A KR 100552586 B1 KR100552586 B1 KR 100552586B1
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inner core
piston
magnet
core assembly
linear
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KR1020040036267A
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KR20050111098A (en
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박승일
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삼성광주전자 주식회사
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Priority to KR1020040036267A priority Critical patent/KR100552586B1/en
Priority to US10/944,630 priority patent/US20050260083A1/en
Priority to CNA2004100835411A priority patent/CN1699750A/en
Priority to IT001942A priority patent/ITMI20041942A1/en
Priority to BR0404450-9A priority patent/BRPI0404450A/en
Priority to JP2004310719A priority patent/JP2005330953A/en
Publication of KR20050111098A publication Critical patent/KR20050111098A/en
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    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Power Engineering (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Veterinary Medicine (AREA)
  • Pain & Pain Management (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Linear Motors (AREA)

Abstract

본 발명은 리니어모터를 갖춘 리니어 압축기에 관한 것으로, 본 발명에 따른리니어모터는 피스톤(30)과 소정거리 이격되어 실린더블록(21)에 고정되는 외측코어(41)와, 전원을 인가받아 자기장을 발생시키는 코일(42)과, 피스톤(30)의 외측에 고정되는 내측코어결합체(50)를 구비하며, 내측코어결합체(50)는 중공의 원통형상을 갖는 것으로, 내측코어(51)와, 내측코어(51) 외측에 고정되는 마그네트(52)와, 사출성형을 통해 내측코어(51)와 마그네트(52)를 고정시키는 성형물(53)을 포함하여 구성된다.The present invention relates to a linear compressor having a linear motor, the linear motor according to the present invention is spaced apart from the piston 30 by a predetermined distance and the outer core 41 is fixed to the cylinder block 21, the power is applied to the magnetic field A coil 42 to be generated, and an inner core assembly 50 fixed to the outside of the piston 30, and the inner core assembly 50 has a hollow cylindrical shape, the inner core 51 and the inner side. The magnet 52 is fixed to the outside of the core 51, and the molding 53 for fixing the inner core 51 and the magnet 52 through the injection molding.

Description

리니어 모터 및 이를 갖춘 리니어 압축기{LINEAR MOTOR AND LINEAR COMPRESSOR HAVING THE SAME}LINEAR MOTOR AND LINEAR COMPRESSOR HAVING THE SAME}

도 1은 본 발명에 따른 리니어 압축기의 전체적인 구조를 보인 단면도이다.1 is a cross-sectional view showing the overall structure of a linear compressor according to the present invention.

도 2는 본 발명에 따른 리니어 압축기에 마련되는 내측코어조립체를 보인 단면도이다.2 is a cross-sectional view showing an inner core assembly provided in the linear compressor according to the present invention.

도 3은 본 발명에 따른 리니어 압축기에 있어서 내측코어조립체와 피스톤의 결합을 보인 분해 사시도이다.Figure 3 is an exploded perspective view showing the coupling of the inner core assembly and the piston in the linear compressor according to the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 밀폐용기, 20 : 압축장치,10: sealed container, 20: compression device,

21 : 실린더블록, 21a : 압축실,21: cylinder block, 21a: compression chamber,

22 : 실린더헤드, 30 : 피스톤,22: cylinder head, 30: piston,

31 : 제 1피스톤부, 31a : 제 1지지턱,31: first piston portion, 31a: first support jaw,

31b : 결합홈, 32 : 제 2피스톤부, 31b: coupling groove, 32: second piston portion,

32a : 제 2지지턱, 32b : 결합돌기,32a: second support jaw, 32b: engaging projection,

40 : 구동장치, 41 : 외측코어,40: drive unit, 41: outer core,

42 : 코일, 50 : 내측코어결합체,42: coil, 50: inner core assembly,

51 : 내측코어, 52 : 마그네트,51: inner core, 52: magnet,

53 : 성형물, 54 : 절연부재.53: molding, 54: insulating member.

본 발명은 리니어 압축기에 관한 것으로, 더욱 상세하게는 피스톤을 구동하도록 코어 및 마그네트로 마련되는 리니어모터를 갖춘 리니어 압축기를 제공하는 것이다.The present invention relates to a linear compressor, and more particularly, to provide a linear compressor having a linear motor provided with a core and a magnet to drive a piston.

일반적으로 압축기는 냉매를 매개체로 하여 압축, 응축, 팽창, 증발과정이 연속적으로 수행되는 냉동사이클에서 냉매를 압축하여 외부로 내보내는 작용을 하는 것으로, 이러한 압축기 중에서는 직선 운동력을 발휘하는 리니어모터가 피스톤을 직선왕복 운동시킴으로 냉매를 압축하게 되는 리니어 압축기가 있다. Generally, the compressor compresses the refrigerant and releases it to the outside in a refrigeration cycle in which the compression, condensation, expansion, and evaporation processes are continuously performed through the refrigerant. Among these compressors, a linear motor having a linear kinetic force is a piston. There is a linear compressor that compresses refrigerant by linear reciprocating motion.

종래 리니어 압축기는 밀폐용기 내부에 냉매를 압축하는 압축장치와, 압축장치에 동력을 제공하는 구동장치로 구성된다.Conventional linear compressor is composed of a compression device for compressing the refrigerant in the sealed container, and a drive device for providing power to the compression device.

압축장치는 내부에 압축실이 형성된 실린더블록과, 압축실내를 진퇴하는 피스톤을 구비하여 냉매를 압축하게 된다.The compression apparatus includes a cylinder block having a compression chamber formed therein and a piston for advancing and retreating the compression chamber to compress the refrigerant.

구동장치는 전원을 인가받아 선형운동을 하는 리니어모터로써, 실린더블록의 외측에 설치되는 내측코어와, 내측코어와 소정거리 이격되게 배치되며 내부에 코일이 권선된 외측코어와, 피스톤에 고정되어 내측코어와 외측코어 사이에 배치되는 가동부재를 구비하며, 가동부재에는 두 코어와 전자기적 상호작용을 통해 가동부재 및 피스톤을 구동하도록 마그네트가 설치되게 된다.The drive device is a linear motor that receives linear power and performs linear movement. The inner core is installed on the outer side of the cylinder block, the inner core is disposed to be spaced apart from the inner core by a predetermined distance, and the inner core is wound around the coil, and is fixed to the piston to the inner side. A movable member is disposed between the core and the outer core, and the magnet is installed in the movable member to drive the movable member and the piston through electromagnetic interaction with the two cores.

그러나, 이러한 종래 리니어 압축기는 내측코어와 마그네트가 실린더블록과 가동부재에 각각 설치되므로 그 조립과정이 복잡해지고 생산성이 저하되는 문제점이 있었다.However, such a conventional linear compressor has a problem that the assembly process is complicated and productivity is lowered because the inner core and the magnet are installed on the cylinder block and the movable member, respectively.

또한, 종래 리니어 압축기는 내측코어와 외측코어 사이에 배치되는 가동부재에 의해 내측코어와 외측코어 사이에 일정 이상의 에어갭(air gap)이 요구되므로 리니어모터의 효율이 저하되고, 특히 가동부재가 외부 충격에 의해 변형되는 경우 리니어모터가 정상적인 작동을 이루지 못하게 되는 문제점이 있다.In addition, the conventional linear compressor requires a predetermined air gap between the inner core and the outer core by the movable member disposed between the inner core and the outer core, so that the efficiency of the linear motor is lowered. When deformed by impact, there is a problem that the linear motor does not achieve normal operation.

본 발명은 이러한 문제점을 해결하기 위한 것으로, 내측코어와 마그네트의 설치를 보다 용이하게 이루고, 내측코어와 외측코어 사이의 에어갭을 최소화하여 구동효율을 향상시킬 수 있는 리니어모터를 갖춘 리니어 압축기를 제공하는 것이다.The present invention is to solve this problem, to provide a linear compressor having a linear motor that makes it easier to install the inner core and the magnet, and improve the driving efficiency by minimizing the air gap between the inner core and the outer core. It is.

이러한 목적을 달성하기 위한 본 발명에 따른 리니어 압축기는; 압축실 내부를 왕복 운동하며 냉매를 압축하는 피스톤과, 상기 피스톤과 이격되게 배치되며 내부에 코일이 권선되어 자기장을 형성하는 외측코어와, 상기 피스톤의 외측에 고정되는 내측코어결합체를 구비하되 상기 내측코어결합체는 상기 외측코어에 형성된 자기장의 통로가 되는 내측코어와, 상기 내측코어 및 상기 외측코어와 전자기적으로 상호 작용하여 상기 피스톤을 진퇴시키는 마그네트를 포함하는 것을 특징으로 한다.Linear compressor according to the present invention for achieving this object; A piston for reciprocating the inside of the compression chamber and compressing the refrigerant, an outer core disposed to be spaced apart from the piston and having a coil wound therein to form a magnetic field, and an inner core assembly fixed to the outside of the piston, The core assembly is characterized in that it comprises an inner core that is a passage of the magnetic field formed in the outer core, and the magnet to advance and retract the piston by electromagnetic interaction with the inner core and the outer core.

또한, 상기 마그네트는 상기 내측코어의 외측에 마련되는 것을 특징으로 한다.In addition, the magnet is characterized in that provided on the outside of the inner core.

또한, 상기 내측코어결합체는 사출성형을 통해 상기 내측코어와 상기 마그네트를 고정시키는 성형물을 더 포함하는 것을 특징으로 한다.In addition, the inner core assembly is characterized in that it further comprises a molding for fixing the inner core and the magnet through the injection molding.

또한, 상기 내측코어와 상기 마그네트가 서로 절연되도록 상기 내측코어와 상기 마그네트 사이에 절연부재가 마련되는 것을 특징으로 한다.In addition, an insulating member is provided between the inner core and the magnet so that the inner core and the magnet are insulated from each other.

또한, 상기 피스톤은 외주면에 상기 내측코어결합체의 양단을 축방향으로 각각 지지하는 제 1지지턱 및 제 2지지턱이 형성된 것을 특징으로 한다.In addition, the piston is characterized in that the first support jaw and the second support jaw for supporting both ends of the inner core assembly in the axial direction on the outer peripheral surface is formed.

또한, 상기 피스톤은 제 1지지턱이 형성된 제 1피스톤부와, 제 2지지턱이 형성된 제 2피스톤부로 분리 가능하게 마련되는 것을 특징으로 한다.In addition, the piston is characterized in that it is provided to be separated into a first piston portion formed with a first support jaw, and a second piston portion formed with a second support jaw.

또한, 상기 제 1피스톤부와 상기 제 2피스톤부의 결합을 위해 두 피스톤부 중 하나에는 결합돌기가 형성되고 나머지 하나에는 상기 결합돌기가 삽입되는 결합홈이 형성된 것을 특징으로 한다.In addition, a coupling protrusion is formed in one of the two piston parts for coupling the first piston part and the second piston part, and a coupling groove in which the coupling protrusion is inserted is formed in the other one.

또한, 본 발명에 따른 리니어 모터는 출력축을 구동하도록 상기 출력축과 이격되게 배치되며 내부에 코일이 권선되어 자기장을 형성하는 외측코어와, 상기 출력축의 외측에 고정되는 내측코어결합체를 구비하되 상기 내측코어결합체는 상기 외측코어에 형성된 자기장의 통로가 되는 내측코어와, 상기 내측코어 및 상기 외측코어와 전자기적으로 상호 작용하여 상기 출력축을 진퇴시키는 마그네트를 포함하는 것을 특징으로 한다.In addition, the linear motor according to the present invention has an outer core disposed to be spaced apart from the output shaft to drive the output shaft and having a coil wound therein to form a magnetic field, and an inner core assembly fixed to the outside of the output shaft. The coupling body includes an inner core serving as a passage of a magnetic field formed in the outer core, and a magnet which electromagnetically interacts with the inner core and the outer core to advance and retract the output shaft.

또한, 상기 내측코어결합체는 사출성형을 통해 상기 내측코어와 상기 마그네트를 고정시키는 성형물을 더 포함하는 것을 특징으로 한다.In addition, the inner core assembly is characterized in that it further comprises a molding for fixing the inner core and the magnet through the injection molding.

이하에서는 본 발명에 따른 바람직한 실시예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

도 1 을 참조하면, 본 발명에 따른 리니어 압축기는 밀폐용기(10) 내부에 냉매를 압축하는 압축장치(20)와, 압축장치(20)를 구동하는 구동장치(40)를 구비한다.Referring to FIG. 1, the linear compressor according to the present invention includes a compression device 20 for compressing a refrigerant inside the sealed container 10, and a driving device 40 for driving the compression device 20.

압축장치(20)는 압축실(21a)을 형성하는 실린더블록(21)과, 압축실(21a) 내부에 왕복운동 가능하게 마련된 피스톤(30)을 포함하며, 실린더블록(21)의 일측에는 내부에 흡입실(22a)과 토출실(22b)이 형성된 실린더헤드(22)가 결합된다.The compression device 20 includes a cylinder block 21 forming a compression chamber 21a, and a piston 30 reciprocally provided inside the compression chamber 21a, and on one side of the cylinder block 21 The cylinder head 22 in which the suction chamber 22a and the discharge chamber 22b are formed is combined.

구동장치(40)는 피스톤(30)과 소정거리 이격되어 실린더블록(21)에 고정되는 외측코어(41)와, 전원을 인가받아 자기장을 발생시키는 코일(42)과, 피스톤(30)의 외측에 고정되는 내측코어결합체(50)를 포함하는 리니어모터로 마련되며, 외측코어(41)는 금속 박판이 원주방향으로 적층되어 형성되고, 코일(42)은 외측코어(41) 내부에 환형상으로 권선되게 된다.The drive device 40 includes an outer core 41 fixed to the cylinder block 21 at a predetermined distance from the piston 30, a coil 42 for generating a magnetic field by receiving power, and an outside of the piston 30. It is provided with a linear motor including an inner core assembly 50 fixed to the outer core 41, the outer core 41 is formed by laminating a metal sheet in the circumferential direction, the coil 42 in an annular shape inside the outer core 41 It will be wound.

도 2를 참조하면, 내측코어결합체(50)는 중공의 원통형상으로 마련되어 피스톤(30)의 외측에 고정되게 되는 것으로, 이러한 내측코어결합체(50)는 외측코어(41)에 형성된 자기장의 통로가 되도록 금속 박판이 원주방향으로 적층된 내측코어(51)와, 내측코어(51) 외측에 고정되며 두 코어(41,51)사이에서 전자기적으로 상호작용을 하면서 상하방향으로 진퇴하게 되는 마그네트(52)를 포함하여 구성된다.2, the inner core assembly 50 is provided in a hollow cylindrical shape to be fixed to the outside of the piston 30, the inner core assembly 50 is a passage of the magnetic field formed in the outer core 41 Inner core 51 laminated in the circumferential direction, and a magnet 52 fixed to an outer side of the inner core 51 and advancing upward and downward while electromagnetically interacting between the two cores 41 and 51. It is configured to include).

즉, 내측코어결합체(50)는 내측코어(51)와 마그네트(52)가 일체화된 것으로, 사출성형을 통한 성형물(53)에 의해 내측코어(51)와 마그네트(52)는 서로 고정되게 되는 것이다.That is, the inner core assembly 50 is the inner core 51 and the magnet 52 is integrated, the inner core 51 and the magnet 52 is fixed to each other by the molding 53 through injection molding. .

이때, 내측코어(51)와 마그네트(52)가 서로 절연될 수 있도록 내측코어(51)와 마그네트(52) 사이에는 절연지나 절연필름 등과 같은 절연부재(54)가 끼워지게 된다.At this time, an insulating member 54 such as insulating paper or insulating film is inserted between the inner core 51 and the magnet 52 so that the inner core 51 and the magnet 52 can be insulated from each other.

한편, 내측코어결합체(50)를 고정하기 위해 피스톤(30)에는 외주면으로부터 외측으로 연장된 지지턱(31a,32a)이 형성되며, 이러한 지지턱(31a,32a)은 한 쌍으로 마련되어 내측코어결합체(50)의 상단과 하단을 각각 지지하게 된다.Meanwhile, in order to fix the inner core assembly 50, the piston 30 has support jaws 31a and 32a extending outward from the outer circumferential surface, and the support jaws 31a and 32a are provided in pairs to provide the inner core assembly. The upper and lower ends of the 50 are respectively supported.

그리고 도 3에 도시된 바와 같이, 두 지지턱(31a,32a) 사이로 내측코어결합체(50)가 설치될 수 있도록 피스톤(30)은 제 1지지턱(31a)이 형성된 제 1피스톤부(31)와, 제 2지지턱(32a)이 형성된 제 2피스톤부(32)로 분리되는 구조를 갖게 되며, 제 1피스톤부(31) 및 제 2피스톤부(32)는 내측코어결합체(50)가 제 1피스톤부(31) 또는 제 2피스톤부(32) 중 어느 한측에 삽입된 후 서로 결합을 이루게 된다.As shown in FIG. 3, the piston 30 has a first piston portion 31 having a first supporting jaw 31a so that the inner core assembly 50 may be installed between the two supporting jaws 31a and 32a. And, the second support jaw (32a) has a structure that is separated into the second piston portion 32 is formed, the first piston portion 31 and the second piston portion 32 is the inner core assembly 50 is made of a first After being inserted into either one of the first piston portion 31 or the second piston portion 32 to form a coupling with each other.

또, 제 1피스톤부(31)와 제 2피스톤부(32)의 견고한 결합을 위해 제 2피스톤부(32)의 상단에는 결합돌기(32b)가 상측으로 돌출 형성되고, 제 1피스톤부(31)의 하단에는 결합돌기(32b)가 삽입되는 결합홈(31b)이 형성되게 된다.In addition, a coupling protrusion 32b protrudes upward from the upper end of the second piston part 32 so as to firmly couple the first piston part 31 and the second piston part 32, and the first piston part 31. At the bottom of the coupling groove 31b into which the coupling protrusion 32b is inserted is formed.

이때, 결합돌기(32b)는 결합홈(31b)에 압입될 수 있도록 그 직경이 결합홈(31b)의 직경보다 조금 크게 마련되고, 최초 원활한 삽입을 위해 선단부는 테이퍼지게 형성되는 것이 바람직하다.At this time, the diameter of the coupling protrusion 32b is provided to be slightly larger than the diameter of the coupling groove 31b so as to be press-fit into the coupling groove 31b, it is preferable that the tip is tapered for the first smooth insertion.

다음은 본 발명에 따른 리니어 압축기의 동작 및 그에 따른 효과를 설명한다.The following describes the operation of the linear compressor according to the present invention and the effects thereof.

먼저, 코일(42)에 전원이 인가되면 외측코어(41)에 자기장이 유기되게 되며, 이 자기장은 내측코어(51)로 흐르게 된다. 그리고 내측코어(51)와 외측코어(41) 사이에 위치하는 마그네트(52)는 두 코어(41,42) 사이를 흐르는 자기장과 자기적 상호 작용을 하며 상하방향으로 이동하게 되는데, 마그네트(52)가 내측코어(51)와 함께 내측코어조립체(50)를 이루고, 이 내측코어조립체(50)가 피스톤(30)의 외주면에 고정되어 있으므로 피스톤(30)은 마그네트(52)와 동시에 상하방향으로 왕복운동을 하면서 압축실(21a)의 냉매를 압축하게 된다.First, when power is applied to the coil 42, a magnetic field is induced in the outer core 41, and the magnetic field flows to the inner core 51. In addition, the magnet 52 positioned between the inner core 51 and the outer core 41 has a magnetic interaction with the magnetic field flowing between the two cores 41 and 42 and moves up and down. The magnet 52 Forms an inner core assembly 50 together with the inner core 51, and the inner core assembly 50 is fixed to the outer circumferential surface of the piston 30, so that the piston 30 reciprocates up and down simultaneously with the magnet 52. During the movement, the refrigerant in the compression chamber 21a is compressed.

이와 같이, 본 발명에 따른 리니어 압축기는 마그네트(52)와 내측코어(51)가 사출성형을 통해 일체로 형성된 내측코어조립체(50)를 이루고 있으므로, 내측코어(51)와 외측코어(41) 사이의 에어갭(air gap)이 최소화되어 리니어모터의 구동효율이 상승되게 된다.As described above, the linear compressor according to the present invention forms an inner core assembly 50 in which the magnet 52 and the inner core 51 are integrally formed by injection molding, and thus, between the inner core 51 and the outer core 41. The air gap of the motor is minimized to increase the driving efficiency of the linear motor.

이상에서 설명한 바와 같이, 본 발명에 따른 리니어 압축기는 내측코어와 마그네트가 사출성형을 통해 일체로 형성되어 내측코어조립체를 이루며, 상기 내측코어조립체가 피스톤의 외측에 고정되게 된다.As described above, in the linear compressor according to the present invention, the inner core and the magnet are integrally formed by injection molding to form the inner core assembly, and the inner core assembly is fixed to the outside of the piston.

이에 따라, 종래 압축기에 사용되는 가동부재가 불필요하게 됨에 따라 내측코어와 외측코어 사이의 에어갭을 최소화 할 수 있게 되어 리니어모터의 출력효율 및 압축기의 구동효율이 전체적으로 향상되게 되는 효과가 있다.Accordingly, as the movable member used in the conventional compressor becomes unnecessary, the air gap between the inner core and the outer core can be minimized, thereby improving the output efficiency of the linear motor and the driving efficiency of the compressor as a whole.

또한, 사출성형을 통해 형성된 내측코어조립체를 피스톤에 고정함으로써 내측코어 및 마그네트의 설치를 완료하게 되므로 조립을 용이하게 이룰 수 있으며 생산성이 증대되는 효과가 있다.In addition, since the installation of the inner core and the magnet is completed by fixing the inner core assembly formed through injection molding to the piston, the assembly can be easily achieved and productivity is increased.

Claims (9)

압축실 내부를 왕복 운동하며 냉매를 압축하는 피스톤과, 상기 피스톤과 이격되게 배치되며 내부에 코일이 권선되어 자기장을 형성하는 외측코어와, 상기 피스톤의 외측에 고정되는 내측코어결합체를 구비하되,A piston for reciprocating the compression chamber and compressing the refrigerant, an outer core disposed to be spaced apart from the piston and having a coil wound therein to form a magnetic field, and an inner core assembly fixed to the outside of the piston, 상기 내측코어결합체는 상기 외측코어에 형성된 자기장의 통로가 되는 내측코어와, 상기 내측코어 및 상기 외측코어와 전자기적으로 상호 작용하여 상기 피스톤을 진퇴시키는 마그네트를 포함하고, The inner core assembly includes an inner core that is a passage of a magnetic field formed in the outer core, and a magnet that electromagnetically interacts with the inner core and the outer core to advance and retract the piston, 상기 피스톤은 외주면에 상기 내측코어결합체의 양단을 축방향으로 각각 지지하는 제 1지지턱 및 제 2지지턱이 형성된 것을 특징으로 하는 리니어 압축기.The piston has a linear compressor, characterized in that the first support jaw and the second support jaw are formed on the outer circumferential surface to support both ends of the inner core assembly in the axial direction, respectively. 제 1항에 있어서,The method of claim 1, 상기 마그네트는 상기 내측코어의 외측에 마련되는 것을 특징으로 하는 리니어 압축기.The magnet is provided on the outside of the inner core linear compressor. 제 1항에 있어서,The method of claim 1, 상기 내측코어결합체는 사출성형을 통해 상기 내측코어와 상기 마그네트를 고정시키는 성형물을 더 포함하는 것을 특징으로 하는 리니어 압축기.The inner core assembly further comprises a molding for fixing the inner core and the magnet through injection molding. 제 3항에 있어서,The method of claim 3, wherein 상기 내측코어와 상기 마그네트가 서로 절연되도록 상기 내측코어와 상기 마그네트 사이에 절연부재가 마련되는 것을 특징으로 하는 리니어 압축기.And an insulating member is provided between the inner core and the magnet to insulate the inner core and the magnet from each other. 삭제delete 제 1항에 있어서,The method of claim 1, 상기 피스톤은 제 1지지턱이 형성된 제 1피스톤부와, 제 2지지턱이 형성된 제 2피스톤부로 분리 가능하게 마련되는 것을 특징으로 하는 리니어 압축기.The piston is a linear compressor, characterized in that it is provided to be separated into a first piston portion having a first supporting jaw and a second piston portion having a second supporting jaw. 제 6항에 있어서,The method of claim 6, 상기 제 1피스톤부와 상기 제 2피스톤부의 결합을 위해 두 피스톤부 중 하나에는 결합돌기가 형성되고 나머지 하나에는 상기 결합돌기가 삽입되는 결합홈이 형성된 것을 특징으로 하는 리니어 압축기.The linear compressor, characterized in that the coupling protrusion is formed on one of the two piston portion for coupling the first piston portion and the second piston portion and the coupling groove into which the coupling protrusion is inserted. 출력축을 구동하도록 상기 출력축과 이격되게 배치되며 내부에 코일이 권선되어 자기장을 형성하는 외측코어와, 상기 출력축의 외측에 고정되는 내측코어결합체를 구비하되An outer core disposed to be spaced apart from the output shaft to drive the output shaft and having a coil wound therein to form a magnetic field, and an inner core assembly fixed to the outside of the output shaft, 상기 내측코어결합체는 상기 외측코어에 형성된 자기장의 통로가 되는 내측코어와, 상기 내측코어 및 상기 외측코어와 전자기적으로 상호 작용하여 상기 출력축을 진퇴시키는 마그네트를 포함하고, The inner core assembly includes an inner core that is a passage of a magnetic field formed in the outer core, and a magnet that electromagnetically interacts with the inner core and the outer core to advance and retract the output shaft. 상기 출력축은 외주면에 상기 내측코어결합체의 양단을 축방향으로 각각 지지하는 제 1지지턱 및 제 2지지턱이 형성된 것을 특징으로 하는 리니어 모터.The output shaft is a linear motor, characterized in that the first support jaw and the second support jaw for supporting both ends of the inner core assembly in the axial direction on the outer peripheral surface. 제 8항에 있어서,The method of claim 8, 상기 내측코어결합체는 사출성형을 통해 상기 내측코어와 상기 마그네트를 고정시키는 성형물을 더 포함하는 것을 특징으로 하는 리니어 모터.The inner core assembly further comprises a molding for fixing the inner core and the magnet through injection molding.
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US20050260083A1 (en) 2005-11-24
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BRPI0404450A (en) 2006-01-10
KR20050111098A (en) 2005-11-24
JP2005330953A (en) 2005-12-02

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