JPH09209922A - Linear compressor - Google Patents
Linear compressorInfo
- Publication number
- JPH09209922A JPH09209922A JP3419796A JP3419796A JPH09209922A JP H09209922 A JPH09209922 A JP H09209922A JP 3419796 A JP3419796 A JP 3419796A JP 3419796 A JP3419796 A JP 3419796A JP H09209922 A JPH09209922 A JP H09209922A
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- winding
- piston
- oscillator
- linear compressor
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 30
- 230000004907 flux Effects 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Compressor (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はリニア式コンプレッ
サの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in linear compressors.
【０００２】[0002]
【従来の技術】従来のリニア式コンプレッサとしては、
例えば実開平６−２５５６５号公報に記載のようなもの
が存在する。この従来技術のものは、図５に示すように
構成されていた。同図において、３１はガスの吸入ポー
ト３２と吐出ポート３３を有する密閉ケースである。ケ
ース３１内には支持枠３４が固定配置されている。支持
枠３４は中央の中空軸３５と中空軸３５の上端から外部
に張り出したフランジ部３６とフランジ部３６の周囲か
ら下方に延在するカップ状部３７とを有している。支持
枠３４はケース３１の内壁に取り付けられている。３８
は振動吸収のためのスプリングである。中空軸３５の下
方にはリニアモータ３９が配置されている。即ち、中空
軸３５の下部には円筒状の固定子支持部材４０が取り付
けられている。この固定子支持部材４０の外周とカップ
状部３７の内周には、内側及び外側の界磁コア４１及び
４２が夫々固定配置されており、外側の界磁コア４２に
は界磁巻線４３が装着されている。この内側、外側の界
磁コア４１、４２及び界磁巻線４３によってリニアモー
タの固定子が形成される。各界磁コア４１及び４２の隙
間には円筒状の磁石４４ａ、４４ｂ、４４ｃを連結した
磁石体４４が軸方向に移動可能に配置されている。この
磁石体４４の下端には略円盤状のハブ部４５が取り付け
られて、略Ｕ字形を成している。固定子支持部材４０の
中央中空部には可動軸４６が摺動可能に延在しており、
この可動軸４６の下端はハブ部４５に接続されている。
この磁石体４４、ハブ部４５及び可動軸４６でリニアモ
ータの可動子が構成されている。界磁巻線４３に交流電
流が供給されると、界磁コア４１、４２に交流磁界が発
生し、可動子が往復動作する。2. Description of the Related Art As a conventional linear compressor,
For example, there is one as described in Japanese Utility Model Publication No. 6-25565. This prior art device is constructed as shown in FIG. In the figure, 31 is a sealed case having a gas suction port 32 and a gas discharge port 33. A support frame 34 is fixedly arranged in the case 31. The support frame 34 has a central hollow shaft 35, a flange portion 36 protruding outward from the upper end of the hollow shaft 35, and a cup-shaped portion 37 extending downward from the periphery of the flange portion 36. The support frame 34 is attached to the inner wall of the case 31. 38
Is a spring for absorbing vibration. A linear motor 39 is arranged below the hollow shaft 35. That is, the cylindrical stator support member 40 is attached to the lower portion of the hollow shaft 35. Inner and outer field cores 41 and 42 are fixedly arranged on the outer circumference of the stator support member 40 and the inner circumference of the cup-shaped portion 37, and the field winding 43 is arranged on the outer field core 42. Is installed. The inner and outer field cores 41 and 42 and the field winding 43 form a stator of the linear motor. A magnet body 44 in which cylindrical magnets 44a, 44b and 44c are connected is arranged in the gap between the field cores 41 and 42 so as to be movable in the axial direction. A substantially disk-shaped hub portion 45 is attached to the lower end of the magnet body 44 to form a substantially U-shape. A movable shaft 46 slidably extends in the central hollow portion of the stator support member 40,
The lower end of the movable shaft 46 is connected to the hub portion 45.
The magnet body 44, the hub portion 45 and the movable shaft 46 constitute a mover of a linear motor. When an alternating current is supplied to the field winding 43, an alternating magnetic field is generated in the field cores 41 and 42, and the mover reciprocates.
【０００３】フランジ部３６とリニアモータ３９との間
には、カップ状部３７と中空軸３５とで囲まれた取付空
間４７が形成されている。中空軸３５内にはピストンロ
ッド４８が摺動自在に嵌装されている。このピストンロ
ッド４８の下端は可動子の可動軸４６の上端に直結さ
れ、ピストンロッド４８の上端にはピストン４９が取り
付けられ、ピストン４９の周囲には、ピストン４９を摺
動自在に嵌装した円筒体５０が配置されている。円筒体
５０の下端には弁機構が設けられている。この弁機構は
吸入孔５１と吐出孔５２とを有する弁板５３と、吸入孔
５１の開閉を制御する吸入弁５４及び吐出孔５２の開閉
を制御する吐出弁５５とからなり、円筒体５０と弁機構
とでシリンダ室が構成されている。支持枠３４のフラン
ジ部３６の中央部には、そこから立ち上がったボス部３
６ａが形成されており、このボス部３６ａ上に弁板５３
が固着されている。なお、吐出孔５２は、このボス部３
６ａから中空軸３５の壁を貫通して延在し、取付空間４
７に連通している。また、吸入孔５１はボス部３６ａの
外側に外れた位置に配置され、円筒体５０と弁機構とピ
ストン４９とで、作動ガス圧縮室５６が形成されてい
る。シリンダヘッド５７は、その下端部に周囲に拡がっ
たフランジ部５９を有している。一方、支持枠３４は、
そのフランジ部３６から円筒体５０の外側に立ち上がっ
た筒状部６０を有しており、この筒状部６０の上端に前
記シリンダヘッド５７のフランジ部５９の外周端が接続
されている。この結果、円筒体５０、筒状部６０、シリ
ンダヘッド５７によって環状の吸入室６１が形成されて
いる。吸入室６１は吸入孔５１と連通すると共に、連結
管６２を介して吸入ポート３２と接続されている。な
お、吐出孔５２は取付空間４７、界磁コア４１、４２と
磁石体４４との間の空隙及びケース３１の内室６３を介
して吐出ポート３３と接続されている。A mounting space 47 surrounded by the cup-shaped portion 37 and the hollow shaft 35 is formed between the flange portion 36 and the linear motor 39. A piston rod 48 is slidably fitted in the hollow shaft 35. A lower end of the piston rod 48 is directly connected to an upper end of a movable shaft 46 of a mover, a piston 49 is attached to an upper end of the piston rod 48, and a piston 49 is slidably fitted around the piston 49. The body 50 is arranged. A valve mechanism is provided at the lower end of the cylindrical body 50. This valve mechanism includes a valve plate 53 having a suction hole 51 and a discharge hole 52, a suction valve 54 for controlling the opening / closing of the suction hole 51 and a discharge valve 55 for controlling the opening / closing of the discharge hole 52, and a cylindrical body 50. A cylinder chamber is constituted by the valve mechanism. At the center of the flange portion 36 of the support frame 34, the boss 3
6a is formed, and the valve plate 53 is provided on the boss portion 36a.
Is fixed. In addition, the discharge hole 52 is formed by the boss portion 3
6a through the wall of the hollow shaft 35, and the mounting space 4
It communicates with 7. Further, the suction hole 51 is arranged at a position outside the boss portion 36a, and the cylinder body 50, the valve mechanism and the piston 49 form a working gas compression chamber 56. The cylinder head 57 has a flange portion 59 that extends to the periphery at the lower end thereof. On the other hand, the support frame 34 is
It has a tubular portion 60 rising from the flange portion 36 to the outside of the cylindrical body 50, and the outer peripheral end of the flange portion 59 of the cylinder head 57 is connected to the upper end of the tubular portion 60. As a result, the cylindrical body 50, the tubular portion 60, and the cylinder head 57 form an annular suction chamber 61. The suction chamber 61 communicates with the suction hole 51 and is also connected to the suction port 32 via a connecting pipe 62. The discharge hole 52 is connected to the discharge port 33 via the mounting space 47, the gap between the field cores 41 and 42 and the magnet body 44, and the inner chamber 63 of the case 31.
【０００４】上記構成において、界磁巻線４３に交流電
流が供給されると、前記したようにリニアモータの可動
子が上下に往復動する。このとき、可動子の可動軸４６
と直結されたピストンロッド４８を介してピストン４９
もシリンダ内で可動子の上下動に応じて上下動する。ピ
ストン４９が上昇するとき、作動ガス圧縮室５６は容積
が増加し低圧となるので、吸入弁５４が開き、白矢印で
示されるように、吸入ポート３２から連結管６２、吸入
室６１及び吸入孔５１を介して作動ガス圧縮室５６内に
作動ガスが吸入される。一方、ガススプリング室５８は
容積が減少するので内圧が上昇する。この結果、ピスト
ン４９に上昇方向とは反対方向の背圧が加わることにな
り、ピストン４９の上昇方向の慣性移動を停止させる作
用を果たす。ピストン４９が下降するとき、作動ガス圧
縮室５６の容積が減少し内部の作動ガスが圧縮されて吐
出孔５２を通して吐出弁５５を開き、取付空間４７に吐
出され黒矢印で示すように、取付空間４７から界磁コア
４１、４２と磁石体４４との間の空隙及びケース３１の
内室６３を通して吐出ポート３３に排出される。一方、
ガススプリング室５８の容積は増大するので、内圧が低
下する。従って、ピストン４９には下降方向とは反対方
向の背圧が掛かり、ピストン４９の下降方向の慣性移動
を停止させる作用を果たす。In the above structure, when an alternating current is supplied to the field winding 43, the mover of the linear motor reciprocates up and down as described above. At this time, the movable shaft 46 of the mover
A piston 49 via a piston rod 48 directly connected to
Also moves up and down in the cylinder as the mover moves up and down. When the piston 49 rises, the working gas compression chamber 56 increases in volume and becomes low in pressure, so that the suction valve 54 opens and, as shown by the white arrow, the suction port 32 extends from the connection pipe 62, the suction chamber 61 and the suction hole. The working gas is sucked into the working gas compression chamber 56 via 51. On the other hand, since the volume of the gas spring chamber 58 decreases, the internal pressure rises. As a result, a back pressure in the direction opposite to the upward direction is applied to the piston 49, which serves to stop the inertial movement of the piston 49 in the upward direction. When the piston 49 descends, the volume of the working gas compression chamber 56 decreases, the working gas inside is compressed, the discharge valve 55 is opened through the discharge hole 52, and the discharge space 55 is discharged into the mounting space 47, as indicated by the black arrow. It is discharged to the discharge port 33 from 47 through the gap between the field cores 41 and 42 and the magnet body 44 and the inner chamber 63 of the case 31. on the other hand,
Since the volume of the gas spring chamber 58 increases, the internal pressure decreases. Therefore, a back pressure is applied to the piston 49 in the direction opposite to the descending direction, which serves to stop the inertial movement of the piston 49 in the descending direction.
【０００５】[0005]
【発明が解決しようとする課題】従来のものは、上記の
ように界磁巻線が外側の界磁コアに嵌入により装着され
ているが、界磁巻線の断面形状を考慮すると界磁コアを
２つ割りにしないと界磁巻線は界磁コアに装着できず、
界磁巻線の装着作業が面倒であるという問題点があっ
た。また、コンプレッサ全体の構成も可成り複雑であ
り、軸方向に長軸となり、大型であるという問題点もあ
った。本発明は、従来のものの上記課題（問題点）を解
決するようにしたリニア式コンプレッサを提供すること
を目的とする。In the conventional device, the field winding is mounted by being fitted into the outer field core as described above. However, considering the cross-sectional shape of the field winding, the field core is The field winding cannot be attached to the field core unless
There is a problem that the work of installing the field winding is troublesome. In addition, the configuration of the entire compressor is rather complicated, and there is a problem in that it has a long axis in the axial direction and is large. SUMMARY OF THE INVENTION It is an object of the present invention to provide a linear compressor that solves the above problems (problems) of conventional ones.
【０００６】[0006]
【課題を解決するための手段】本発明のリニア式コンプ
レッサは、上記課題を解決するために、リニア式コンプ
レッサの駆動源としてのリニアモータの巻線を巻き込ん
だ断面コ字状の非磁性体のボビンに対して断面コ字状の
主ステータを装着し、この主ステータの内側に左、右の
脚部に運動方向に相対し、相互に極性の異なる少なくと
も１対の永久磁石を設けた断面Ｕ字状の振動子を設け、
この振動子の内方に上記主ステータとで少なくとも１対
の磁束通路を形成する補助ステータを設けると共に振動
子の底部内方にピストンを設け、上記巻線に交流電流を
供給するように構成した。この場合、リニアモータのケ
ーシングを断面７字状とし、上記ケーシングの胴部内に
形成される中空部を、上記振動子に設けられるピストン
が収納されるシリンダとして用いるようにする。また、
上記振動子の底部と対向する固定部に亙って共振用の補
助ばねを装着するのが望ましい。In order to solve the above-mentioned problems, the linear compressor of the present invention is made of a non-magnetic material having a U-shaped cross section in which a winding of a linear motor as a drive source of the linear compressor is wound. A cross section U in which a main stator having a U-shaped cross section is mounted on a bobbin, and at least one pair of permanent magnets having mutually different polarities are provided inside the main stator, facing left and right legs in the direction of movement. Provide a letter-shaped vibrator,
An auxiliary stator that forms at least one pair of magnetic flux paths with the main stator is provided inside the vibrator, and a piston is provided inside the bottom of the vibrator to supply an alternating current to the winding. . In this case, the casing of the linear motor has a 7-shaped cross section, and the hollow portion formed in the body portion of the casing is used as a cylinder for accommodating the piston provided in the vibrator. Also,
It is desirable to mount an auxiliary spring for resonance over the fixed portion facing the bottom of the vibrator.
【０００７】本発明のリニア式コンプレッサは、上記の
ように巻線が収納されたボビンに断面コ字状の主ステー
タを装着するようにしたから、巻線の組入れが極めて容
易となり、組み立て作業の効率が大幅に向上する。ま
た、リニアモータのケーシングを断面７字状とし、上記
ケーシングの胴部内に形成される中空部を、上記振動子
に設けられるピストンが収納されるシリンダとして用い
るようにし、リニアモータの機能を有する構成をコンパ
クトにまとめたから、リニア式コンプレッサ全体の構成
が簡単で小型化される。さらに、上記振動子の底部と対
向する固定部に亙って共振用の補助ばねを装着すれば、
小容量の交流電源と巻線で振動子の駆動が行える。In the linear compressor of the present invention, since the main stator having a U-shaped cross section is mounted on the bobbin in which the winding is housed as described above, it is extremely easy to assemble the winding, and the assembly work can be performed easily. Greatly improves efficiency. Further, the casing of the linear motor has a 7-shaped cross section, and the hollow portion formed in the body portion of the casing is used as a cylinder for accommodating the piston provided in the vibrator, and has a function of the linear motor. Since it has been compacted, the overall configuration of the linear compressor is simple and miniaturized. Furthermore, if an auxiliary spring for resonance is mounted over the fixed portion facing the bottom of the vibrator,
The oscillator can be driven by a small-capacity AC power supply and winding.
【０００８】[0008]
【発明の実施の形態】図１乃至図３において、１は上方
ケーシング、２は下方ケーシングで両者は下方ケーシン
グ２の嵌込み口２ａで一体に連結されてコンプレッサの
密閉容器を構成している。なお、下方ケーシング２には
吸入管３と吐出管４とが設けられている。５は断面が略
７字状のリニアモータのケーシング（以下モータケーシ
ングという）で、シリンダの役目をする中空部５Ｐが形
成される円筒状の胴部５ａを有し、例えば、図示のよう
な断面Ｕ字状の枠体５ｂを介して下方ケーシング２にば
ね（図示しない）等で弾性的に固定されている。６Ａ及
び６Ｂは夫々断面コ字状の左方側の主ステータ及び右方
側の主ステータで、これらの各主ステータ６Ａ及び６Ｂ
は電磁鋼板を積層して構成される。７Ａ及び７Ｂは夫々
板状の左方側の補助ステータ及び右方側の補助ステータ
で、これらの各補助ステータ７Ａ及び７Ｂも電磁鋼板を
積層して構成される。８はプラスチック材料等の非磁性
材料より成るボビンで、断面コ字状で図２（Ａ）にも示
すように概略４角形に抜けたドーナツ形状に形成されて
いる。１０は断面Ｕ字状の振動子で、この振動子１０は
左方脚部１０ａに２個の板状の永久磁石１１ａ1、１１
ａ2を設け、一方、右方脚部１０ｂにも２個の板状の永
久磁石１１ｂ1、１１ｂ2を設けている。なお、これらの
永久磁石１１ａ1、１１ａ2及び１１ｂ1、１１ｂ2は夫々
各脚部１０ａ、１０ｂに形成した磁石収納用の各切欠部
１２（図２（Ｂ））に夫々の永久磁石を図４（Ａ）、
（Ｂ）に示すように、各補助ステータ７Ａ、７Ｂとの磁
束通路を形成するために、巻線９に対向する長さ分だけ
離して取り付ける。この場合、各永久磁石の脚部への取
り付けは、図２（Ｂ）に示すように、例えば、永久磁石
１１ｂ1を切欠部１２に嵌込んだ上で、左右の押え板１
３ａ、１３ｂを当てがって各脚部１０ａ、１０ｂに取付
けるようにすれば良い。なお、各一対となる永久磁石１
１ａ1、１１ｂ1及び１１ａ2、１１ｂ2の極性は図１に示
すように、振動子１０の運動方向に相対し、対向する永
久磁石の極性も互いに逆の極性となるようにして配置す
るものとする。１３はピストンで、モータケーシング５
の胴部５ａ内に形成されるシリンダの機能を有する中空
部５Ｐに摺動自在に収納され、ピストン１３の基部は振
動子１０の底部１０ｃの内面に取付けられる。従って、
振動子１０、各一対の永久磁石１１ａ1、１１ｂ1及び１
１ａ2、１１ｂ2並びにピストン１３は一体となって可動
部となる。振動子１０の駆動機構は、以下に述べる作動
原理からは、これらの構成で十分であるが、少い電磁力
で有効な作動を行うために、補助ばねの共振周波数を利
用するのが望ましい。この場合、補助ばね１４は、図１
に示すように振動子１０の底部１０ｃとモータケーシン
グ５の下端部間に装着し、一方、補助ばね１５は振動子
１０の底部１０ｃとモータケーシング５に固定された枠
体５ｂ間に装着すれば良い。なお、これに代え、各補助
ばね１４及び１５は夫々振動子１０の底部１０ｃと対向
する適当な固定部に亙って装着するようにしても良い。
また、補助ばねのばね定数は、共振をおこすために適正
な値に設定すれば良い。１６は弁座板でモータケーシン
グ５の胴部５ａ内に形成されるシリンダの機能を有する
中空部５Ｐの上面を塞ぐように配置される。従って、こ
の弁座板１６とピストン１３の間に作動ガス圧縮室１７
が形成される。１８及び１９は夫々弁座板１６に設けら
れた吐出孔及び吸入孔で、吐出孔１８は吐出マフラ２０
に設けた連結管Ｔを介して吐出管４に連通されている。
一方、吸入孔１９も、吐出マフラ２０の対向位置に設け
られる吸入マフラ（図示せず）に設けられる連結管Ｋを
介して吸入管３に連通される。なお、図示しないが、弁
座板１６には吸入孔１９のシリンダ側の開口を制御する
吸入弁が、また、吐出孔１８の反シリンダ側の開口を制
御する吐出弁が設けられているものとする。以上で本発
明のリニア式コンプレッサが構成される。このように、
本発明のリニア式コンプレッサは次の構成上の特徴を有
する。 （１）図２（Ｂ）に示すように、巻線が巻き込まれたボ
ビンに主ステータを装着することで、巻線を容易に装着
できる構成とした点。 （２）リニアモータの固定子側となるモータケーシング
の胴部で形成される中空部にシリンダの機能を持たせる
と共に、この胴部と主ステータ間に永久磁石を備えた振
動子を介して磁束通路を形成する補助ステータを配置す
ることで、リニアモータの機能を有する構成をコンパク
トにまとめた点。1 to 3, 1 is an upper casing, 2 is a lower casing, and both are integrally connected by a fitting port 2a of the lower casing 2 to form a hermetic container of a compressor. A suction pipe 3 and a discharge pipe 4 are provided in the lower casing 2. Reference numeral 5 is a casing of a linear motor (hereinafter referred to as a motor casing) having a substantially 7-shaped cross section, and has a cylindrical body portion 5a in which a hollow portion 5P serving as a cylinder is formed. It is elastically fixed to the lower casing 2 by a spring (not shown) or the like via a U-shaped frame 5b. Reference numerals 6A and 6B denote a left side main stator and a right side main stator, respectively, which have a U-shaped cross section, and each of these main stators 6A and 6B.
Is formed by laminating electromagnetic steel sheets. Reference numerals 7A and 7B denote a plate-shaped left side auxiliary stator and a right side auxiliary stator, respectively. These auxiliary stators 7A and 7B are also formed by laminating electromagnetic steel plates. Reference numeral 8 denotes a bobbin made of a non-magnetic material such as a plastic material, which has a U-shaped cross section and is formed in a donut shape which is substantially quadrangular as shown in FIG. 2 (A). Reference numeral 10 denotes a vibrator having a U-shaped cross section. This vibrator 10 has two plate-shaped permanent magnets 11a 1 and 11a on the left leg 10a.
The a 2 provided, on the other hand, is provided with two plate-shaped permanent magnet 11b 1, 11b 2 in right leg portion 10b. These permanent magnets 11a 1 , 11a 2 and 11b 1 , 11b 2 are shown in the respective notches 12 (FIG. 2 (B)) for storing magnets formed in the respective leg portions 10a, 10b. 4 (A),
As shown in (B), in order to form a magnetic flux path with each of the auxiliary stators 7A and 7B, they are attached so as to be separated from each other by a length facing the winding 9. In this case, as shown in FIG. 2B, for example, the permanent magnets 11b 1 are fitted into the notches 12 and then the left and right holding plates 1 are attached to the legs of the respective permanent magnets.
3a, 13b may be applied and attached to each leg 10a, 10b. In addition, each pair of permanent magnets 1
As shown in FIG. 1, 1a 1 , 11b 1 and 11a 2 , 11b 2 are arranged so that the polarities of the opposing permanent magnets are opposite to each other and the polarities of the opposing permanent magnets are opposite to each other. And 13 is a piston, which is the motor casing 5
It is slidably housed in a hollow portion 5P having the function of a cylinder formed in the body portion 5a of the piston, and the base portion of the piston 13 is attached to the inner surface of the bottom portion 10c of the vibrator 10. Therefore,
Vibrator 10, each pair of permanent magnets 11a 1 , 11b 1 and 1
1a 2 and 11b 2 and the piston 13 are integrated to form a movable part. These configurations are sufficient for the drive mechanism of the vibrator 10 from the operating principle described below, but it is desirable to use the resonance frequency of the auxiliary spring in order to perform effective operation with a small electromagnetic force. In this case, the auxiliary spring 14 is
As shown in FIG. 5, if the auxiliary spring 15 is mounted between the bottom 10c of the vibrator 10 and the lower end of the motor casing 5, the auxiliary spring 15 is mounted between the bottom 10c of the vibrator 10 and the frame 5b fixed to the motor casing 5. good. Instead of this, each of the auxiliary springs 14 and 15 may be mounted over an appropriate fixing portion facing the bottom portion 10c of the vibrator 10.
Moreover, the spring constant of the auxiliary spring may be set to an appropriate value for causing resonance. A valve seat plate 16 is arranged so as to close the upper surface of the hollow portion 5P having the function of a cylinder formed in the body portion 5a of the motor casing 5. Therefore, the working gas compression chamber 17 is provided between the valve seat plate 16 and the piston 13.
Is formed. Reference numerals 18 and 19 respectively denote a discharge hole and a suction hole provided on the valve seat plate 16, and the discharge hole 18 is a discharge muffler 20.
It is communicated with the discharge pipe 4 via a connecting pipe T provided in the.
On the other hand, the suction hole 19 is also communicated with the suction pipe 3 through a connecting pipe K provided in a suction muffler (not shown) provided at a position facing the discharge muffler 20. Although not shown, the valve seat plate 16 is provided with a suction valve that controls the opening of the suction hole 19 on the cylinder side, and a discharge valve that controls the opening of the discharge hole 18 on the side opposite to the cylinder. To do. The linear compressor of the present invention is constructed as described above. in this way,
The linear compressor of the present invention has the following structural features. (1) As shown in FIG. 2B, the main stator is mounted on the bobbin in which the winding is wound, so that the winding can be easily mounted. (2) The hollow portion formed in the body portion of the motor casing, which is the stator side of the linear motor, has a function of a cylinder, and the magnetic flux is generated between the body portion and the main stator through a vibrator having a permanent magnet. By arranging the auxiliary stators that form the passages, the configuration that has the function of a linear motor is compact.
【０００９】次に、その動作を図４も参照して説明す
る。巻線９に交流電流が供給されると、その電流の方向
により交流磁界を発生し、図４（Ａ）に矢印で示すよう
に、主ステータ６Ａと補助ステータ７Ａ及び主ステータ
６Ｂと補助ステータ７Ｂにより形成される各磁束通路に
磁束が流れるから、各ステータの歯部には図示のように
異なった磁極が着磁され、各永久磁石１１ａ1、１１ｂ1
及び１１ａ2、１１ｂ2の電磁吸引力によって、振動子１
０は上方向に移動する。次に、巻線９に上記とは逆方向
の電流が流れると、図４（Ｂ）に矢印で示すように各ス
テータ６Ａ、６Ｂの歯は前とは逆極性の磁極に着磁され
るから、各永久磁石１１ａ1、１１ｂ1及び１１ａ2、１
１ｂ2の電磁吸引力により振動子１０を下方向に移動さ
せ、以下同様に巻線９の交流電流の半サイクル毎に振動
子１０は上下方向の移動を所定の振幅、振動数で繰り返
す。この場合、ピストン１３が下降するときは、作動ガ
ス圧縮室１７の容積が増加し、低圧となるので吸入マフ
ラの吸入弁（図示せず）が開き、吸入管３から連結管Ｋ
及び吸入孔１９を介して、作動ガス圧縮室１７に作動ガ
スが吸入される。一方、ピストン１３が上昇するとき
は、作動ガス圧縮室１７の容積が減少し、内部の作動ガ
スが圧縮されて吐出孔１８を通して吐出マフラ２０の吐
出弁（図示せず）を開き、連結管Ｔを介して吐出管４に
排出される。Next, the operation will be described with reference to FIG. When an alternating current is supplied to the winding 9, an alternating magnetic field is generated depending on the direction of the current, and as shown by the arrows in FIG. 4 (A), the main stator 6A and the auxiliary stator 7A, and the main stator 6B and the auxiliary stator 7B. Since magnetic flux flows through each magnetic flux path formed by the above, different magnetic poles are magnetized to the teeth of each stator as shown in the figure, and the permanent magnets 11a 1 and 11b 1
And 11a 2 and 11b 2 by the electromagnetic attraction force.
0 moves upward. Next, when a current flows in the opposite direction to the winding 9, the teeth of each of the stators 6A and 6B are magnetized by the magnetic poles having the opposite polarities to the previous ones, as shown by the arrows in FIG. 4 (B). , The permanent magnets 11a 1 , 11b 1 and 11a 2 , 1
The vibrator 10 is moved downward by the electromagnetic attraction force of 1b 2. Similarly, the vibrator 10 repeats the vertical movement with a predetermined amplitude and frequency for each half cycle of the alternating current of the winding 9. In this case, when the piston 13 descends, the volume of the working gas compression chamber 17 increases and the pressure becomes low, so that the suction valve (not shown) of the suction muffler opens, and the suction pipe 3 to the connecting pipe K.
The working gas is sucked into the working gas compression chamber 17 through the suction hole 19 and the suction hole 19. On the other hand, when the piston 13 rises, the volume of the working gas compression chamber 17 decreases, the working gas inside is compressed, the discharge valve (not shown) of the discharge muffler 20 is opened through the discharge hole 18, and the connecting pipe T It is discharged to the discharge pipe 4 via.
【００１０】[0010]
【発明の効果】本発明のリニア式コンプレッサは上記の
ように構成されるから、次のような優れた効果を有す
る。 巻線が収納されたボビンに断面コ字状の主ステータを
装着するようにしたから、巻線の組入れが極めて容易と
なり、組み立て作業の効率が大幅に向上できる。 振動子はリニアモータの固定子側となるモータケーシ
ングの胴部で形成される中空部にシリンダの機能を持た
せると共に、この胴部と主ステータ間に振動子の脚部に
配置される永久磁石を挟んで磁束通路を形成する補助ス
テータを配置することで、リニアモータの機能を有する
構成をコンパクトにまとめたから、リニア式コンプレッ
サ全体の構成も簡単となり、小型化できるようになっ
た。 さらに、上記振動子の底部と対向する固定部に亙って
共振用の補助ばねを装着すれば、補助ばねの共振を利用
することにより、小容量の交流電源及び巻線で振動子の
駆動を行うことができる。Since the linear compressor of the present invention is constructed as described above, it has the following excellent effects. Since the main stator having a U-shaped cross section is mounted on the bobbin in which the winding is housed, the winding can be easily assembled, and the efficiency of the assembling work can be significantly improved. The vibrator has a hollow part formed in the body of the motor casing, which is the stator side of the linear motor, and has the function of a cylinder, and the permanent magnets are placed between the body and the main stator on the legs of the vibrator. By arranging the auxiliary stators that form the magnetic flux path sandwiching the pin, the configuration having the function of the linear motor is compacted. Therefore, the configuration of the entire linear compressor is simplified and can be downsized. Furthermore, if an auxiliary spring for resonance is installed over the fixed portion facing the bottom of the vibrator, the resonance of the auxiliary spring is used to drive the vibrator with a small-capacity AC power supply and winding. It can be carried out.
【図１】本発明の一実施の形態であるリニア式コンプレ
ッサの全体構成を示す縦断正面図である。FIG. 1 is a vertical sectional front view showing the overall configuration of a linear compressor that is an embodiment of the present invention.
【図２】同図（Ａ）は１対の左方側及び右方側の主ステ
ータ、１対の左方側及び右方側の補助ステータ並びにコ
イルボビンの組立状況を示す分解斜視図、同図（Ｂ）は
右方側のリニアモータの構成である主ステータ、巻線を
収納したボビン、補助ステータ及び永久磁石を有する振
動子の組立状況を示す分解斜視図である。FIG. 2A is an exploded perspective view showing an assembly state of a pair of left and right main stators, a pair of left and right auxiliary stators, and a coil bobbin. (B) is an exploded perspective view showing an assembled state of a vibrator having a main stator, a bobbin accommodating windings, an auxiliary stator, and a permanent magnet, which is a configuration of a linear motor on the right side.
【図３】本発明のコンプレッサの要部の組立後の構造を
一部切り欠いて示した斜視図である。FIG. 3 is a perspective view showing a partially cutaway view of a structure of an essential part of a compressor of the present invention after assembly.
【図４】本発明の振動子の作動原理を説明する要部縦断
正面図で、同図（Ａ）は巻線に電流の方向が異なる一方
の半サイクルの交流電流が流れたときの状態を、同図
（Ｂ）は電流方向がこれと異なる他方の半サイクルの交
流電流が流れたときの状態を示す。FIG. 4 is a vertical sectional front view of an essential part for explaining the operating principle of the vibrator of the present invention, in which FIG. 4A shows a state in which one half-cycle alternating current with different current directions flows through the winding. (B) of the same figure shows a state in which an alternating current of the other half cycle whose current direction is different from this flows.
【図５】従来のリニア式コンプレッサの構成を示す縦断
正面図である。FIG. 5 is a vertical sectional front view showing the configuration of a conventional linear compressor.
５：リニアモータのケーシング（モータケーシング） ５Ｐ：中空部 ６Ａ、６Ｂ：主ステータ ７Ａ、７Ｂ：補助ステータ ８：ボビン ９：巻線 １０：振動子 １１ａ1、１１ａ2、１１ａ3、１１ａ4：永久磁石 １３：ピストン １４、１５：補助ばね5: the linear motor casing (motor casing) 5P: hollow portion 6A, 6B: main stator 7A, 7B: the auxiliary stator 8: bobbin 9: winding 10: vibrator 11a 1, 11a 2, 11a 3 , 11a 4: Permanent Magnet 13: Piston 14, 15: Auxiliary spring
Claims (3)
リニアモータの巻線を巻き込んだ断面コ字状の非磁性体
のボビンに対して断面コ字状の主ステータを装着し、こ
の主ステータの内側に左、右の脚部に運動方向に相対
し、相互に極性の異なる少なくとも１対の永久磁石を設
けた断面Ｕ字状の振動子を設け、この振動子の内方に上
記主ステータとで少なくとも１対の磁束通路を形成する
補助ステータを設けると共に振動子の底部内方にピスト
ンを設け、上記巻線に交流電流を供給するようにしたこ
とを特徴とするリニア式コンプレッサ。1. A main stator having a U-shaped cross section is mounted on a non-magnetic bobbin having a U-shaped cross section in which a winding of a linear motor as a drive source of a linear compressor is wound, and the inside of the main stator is mounted. The left and right legs are provided with a vibrator having a U-shaped cross section, which is provided with at least one pair of permanent magnets opposite to each other in the movement direction and having mutually different polarities, and the inside of the vibrator is connected to the main stator. A linear compressor characterized in that an auxiliary stator that forms at least one pair of magnetic flux paths is provided, and a piston is provided inside the bottom of the vibrator so that an alternating current is supplied to the winding.
とし、上記ケーシングの胴部内に形成される中空部を、
上記振動子に設けられるピストンが収納されるシリンダ
として用いるようにした請求項１記載のリニア式コンプ
レッサ。2. The casing of the linear motor has a 7-shaped cross section, and the hollow portion formed in the body of the casing is
The linear compressor according to claim 1, wherein the linear compressor is used as a cylinder for accommodating a piston provided in the vibrator.
って共振用の補助ばねを装着するようにした請求項１記
載のリニア式コンプレッサ。3. The linear compressor according to claim 1, wherein an auxiliary spring for resonance is mounted over a fixed portion facing the bottom of the vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03419796A JP3643635B2 (en) | 1996-01-30 | 1996-01-30 | Linear compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03419796A JP3643635B2 (en) | 1996-01-30 | 1996-01-30 | Linear compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09209922A true JPH09209922A (en) | 1997-08-12 |
| JP3643635B2 JP3643635B2 (en) | 2005-04-27 |
Family
ID=12407449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03419796A Expired - Fee Related JP3643635B2 (en) | 1996-01-30 | 1996-01-30 | Linear compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3643635B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100373099B1 (en) * | 2001-01-04 | 2003-02-25 | 삼성전자주식회사 | Linear compressor |
| KR100414112B1 (en) * | 2001-10-11 | 2004-01-07 | 엘지전자 주식회사 | Structure for engaging stator in reciprocating compressor |
| JP2006097626A (en) * | 2004-09-30 | 2006-04-13 | Hitachi Housetec Co Ltd | Electromagnetic vibration type diaphragm pump |
| JP2006132522A (en) * | 2004-11-03 | 2006-05-25 | Lg Electronics Inc | Linear compressor |
| US7284967B2 (en) | 2001-12-10 | 2007-10-23 | Lg Electronics, Inc. | Reliability-improving structure of reciprocating compressor |
-
1996
- 1996-01-30 JP JP03419796A patent/JP3643635B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100373099B1 (en) * | 2001-01-04 | 2003-02-25 | 삼성전자주식회사 | Linear compressor |
| KR100414112B1 (en) * | 2001-10-11 | 2004-01-07 | 엘지전자 주식회사 | Structure for engaging stator in reciprocating compressor |
| US7284967B2 (en) | 2001-12-10 | 2007-10-23 | Lg Electronics, Inc. | Reliability-improving structure of reciprocating compressor |
| JP2006097626A (en) * | 2004-09-30 | 2006-04-13 | Hitachi Housetec Co Ltd | Electromagnetic vibration type diaphragm pump |
| JP2006132522A (en) * | 2004-11-03 | 2006-05-25 | Lg Electronics Inc | Linear compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3643635B2 (en) | 2005-04-27 |
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