JP2684851B2 - Stirling cycle refrigerator drive mechanism - Google Patents
Stirling cycle refrigerator drive mechanismInfo
- Publication number
- JP2684851B2 JP2684851B2 JP3006824A JP682491A JP2684851B2 JP 2684851 B2 JP2684851 B2 JP 2684851B2 JP 3006824 A JP3006824 A JP 3006824A JP 682491 A JP682491 A JP 682491A JP 2684851 B2 JP2684851 B2 JP 2684851B2
- Authority
- JP
- Japan
- Prior art keywords
- compression
- pistons
- piston
- drive mechanism
- stirling cycle
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/0435—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines the engine being of the free piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/001—Gas cycle refrigeration machines with a linear configuration or a linear motor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Vibration Prevention Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、赤外線察像素子など
の冷却に使用し、微少な振動を嫌うスターリングサイク
ルにより冷却を行う冷凍機の圧力変動を作り出す圧縮機
部の駆動機構に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive mechanism of a compressor section which is used for cooling an infrared image sensor or the like and produces a pressure fluctuation of a refrigerator which cools by a Stirling cycle which dislikes minute vibrations. .
【０００２】[0002]
【従来の技術】従来のスターリングサイクルにより冷却
を行う冷凍機について説明する。図５に示すように、赤
外線察像素子１などが張り付けられ冷却される部分は、
コールドヘッド２と呼ばれるシリンダーであり、コール
ドヘッド２の中に再生器３を内蔵し、圧力変動により往
復運動するディスプレーサ・ピストン４を持つ。圧縮機
部５はディスプレーサ・ピストン４が往復動する膨張室
６と連通しており、圧力変動をつくりだす。その構成は
圧縮ピストン１，７と一体になった圧縮ピストンロッド
１，８の一端にはリニアモータのコイル１，９が取り付
けられており、圧縮機部５本体であるボディ１０にはリ
ニアモータのマグネット１，１１が固定されている。ボ
ディ１０と一体になったシリンダ１２と圧縮ピストン
１，７の隙間は微小で、隙間シールされている。そして
もう一つの圧縮ピストン２，１３も同様な構成で、圧縮
ピストンロッド２，１４とリニアモータのコイル２，１
５とマグネット２，１６で構成されており、シリンダー
１２とは隙間シールされており、上記の圧縮ピストン
１，７と対向する位置に設けられている。圧縮ピストン
１，７と圧縮ピストン２，１３が同位相でそれぞれのリ
ニヤモータにより駆動され、両ピストン間の距離が近付
くと両ピストンの間の部屋である圧縮室１８は高圧にな
り、両ピストン間の距離が遠くなると圧縮室１８の圧力
は低圧になる。2. Description of the Related Art A conventional refrigerator for cooling by a Stirling cycle will be described. As shown in FIG. 5, the portion where the infrared image sensor 1 and the like are attached and cooled are
Co Rudoheddo a cylinder called 2, a built-in regenerator 3 within the cold head 2, having a displacer piston 4 to reciprocate by pressure fluctuations. The compressor section 5 communicates with the expansion chamber 6 in which the displacer piston 4 reciprocates, and creates a pressure fluctuation. The structure is such that the linear motor coils 1 and 9 are attached to one ends of the compression piston rods 1 and 8 that are integrated with the compression pistons 1 and 7, and the body 10 that is the main body of the compressor unit 5 has the linear motor coils 1 and 9. Magnets 1 and 11 are fixed. The gap between the cylinder 12 integrated with the body 10 and the compression pistons 1 and 7 is very small and is sealed. The other compression pistons 2 and 13 have the same structure, and the compression piston rods 2 and 14 and the linear motor coils 2 and 1
5 and magnets 2 and 16, and the gap between the cylinder 12 and the cylinder 12 is sealed and provided at a position facing the compression pistons 1 and 7. The compression pistons 1 and 7 and the compression pistons 2 and 13 are driven by the linear motors in the same phase, and when the distance between the two pistons approaches, the compression chamber 18, which is the chamber between the two pistons, becomes a high pressure, and the two pistons have a high pressure. As the distance becomes longer, the pressure in the compression chamber 18 becomes lower.
【０００３】この圧力が連通管１７を通じて膨張室６に
伝わり、ディスプレーサ・ピストン４を駆動させる。デ
ィスプレーサ・ピストン４がコールドヘッド２の下部空
間に降りてくると、内部の動作ガスはディスプレーサ・
ピストン４に開けられた穴を通し、再生器４を通り、再
びディスプレーサ・ピストン４に開けられた穴から膨張
室６上部に流れ込む。このガスの流れにより膨張室６上
部空間では等温膨張が行われ、赤外線察像素子１を冷却
する。ディスプレーサ・ピストン４は上記の圧縮室１８
からの圧力変動と、ディスプレーサ・ピストン４の下部
に設けられたバネ１９により共振運動し、冷却が連続し
て行われる。また、圧縮機部５をこのような構成にする
ことにより、圧縮機部５で発生する振動を同位相で対抗
させて運動することにより打ち消し、さらに圧縮部５と
ディスプレーサ部を分離することにより、赤外線察像素
子１などが張り付けられたコールドヘッド２へ振動が伝
わらないようにしている。このような圧縮部５とディス
プレーサ部を分離した形式の冷凍機はスプリット型と呼
ばれている。This pressure is transmitted to the expansion chamber 6 through the communication pipe 17 and drives the displacer piston 4. When the displacer piston 4 comes down to the space below the cold head 2, the working gas inside the displacer piston 4
It passes through the hole formed in the piston 4, passes through the regenerator 4, and again flows into the upper part of the expansion chamber 6 from the hole formed in the displacer piston 4. This gas flow causes isothermal expansion in the upper space of the expansion chamber 6 to cool the infrared imaging element 1. The displacer piston 4 is the compression chamber 18 described above.
And the spring 19 provided at the lower portion of the displacer piston 4 resonates to continuously cool. Further, by making the compressor unit 5 have such a configuration, the vibrations generated in the compressor unit 5 are counteracted in the same phase to move and cancel out, and by further separating the compressor unit 5 and the displacer unit, Vibration is prevented from being transmitted to the cold head 2 to which the infrared image sensor 1 and the like are attached. Such a refrigerator in which the compression section 5 and the displacer section are separated from each other is called a split type refrigerator.
【０００４】以上がスターリングサイクルにより冷却を
行う冷凍機の概要であるが、次に従来の圧縮機部５の駆
動機構について詳細に説明する。図５に示した圧縮機部
５の駆動機構のように直接リニアモータで圧縮ピストン
１，７、圧縮ピストン２，１３を駆動したのではリニヤ
モータの出力が大きいものを使用しなければならず、発
熱部の増大や、機器の大型化につながるため、図６に示
すように、駆動系の質量と運転周波数で共振するような
バネ定数を持つ弦巻バネ１，２０を圧縮ピストン１，７
と一体になった圧縮ピストンロッド１，８に固定してい
る。同様に圧縮ピストン２，１３側にも同じバネ定数を
持つ弦巻バネ２，２１を設けている。圧縮ピストン１，
７と圧縮ピストン２，１３が同位相で駆動されるが、運
転周波数で共振するためリニヤモータの出力が小さくな
り、発熱部を減少させ、機器を小型化する。図５と同様
な動作により圧力を発生させ、この圧力が膨張室６に伝
わりディスプレーサ・ピストン４を駆動させる。The above is the outline of the refrigerator for cooling by the Stirling cycle. Next, the drive mechanism of the conventional compressor section 5 will be described in detail. Compression piston 1,7 direct linear motor as the driving mechanism of the compressor unit 5 shown in FIG. 5, than to drive the compression piston 2 and 13 must use the output size castings linear motor, As shown in FIG. 6, the helical springs 1 and 20 having spring constants that resonate with the mass of the drive system and the operating frequency are attached to the compression pistons 1 and 7 to increase the heat generating portion and the size of the device.
It is fixed to compression piston rods 1 and 8 that are integrated with. Similarly, the helical springs 2 and 21 having the same spring constant are also provided on the compression pistons 2 and 13 side. Compression piston 1,
Although 7 and the compression pistons 2 and 13 are driven in the same phase, the output of the linear motor is reduced because they resonate at the operating frequency, the heat generating portion is reduced, and the device is downsized. Pressure is generated by the same operation as in FIG. 5, and this pressure is transmitted to the expansion chamber 6 and drives the displacer piston 4.
【０００５】[0005]
【発明が解決しようとする課題】従来の圧縮部５の駆動
機構は、圧縮ピストン１，７、圧縮ピストン２，１３を
弦巻バネ１，２０、弦巻バネ２，２１により支えている
だけなので、往復運動している圧縮ピストン１，７、圧
縮ピストン２，１３が中心軸から半径方向に動いた場
合、シリンダ１２と圧縮ピストン１，７およびシリンダ
１２と圧縮ピストン２，１３が接触する。通常、圧縮ピ
ストン１，７、圧縮ピストン２，１３は接触しても凝着
しないように自己潤滑性のある樹脂材で作られている
が、摩擦により発生する摩耗粉が、圧縮室から膨張室に
移り冷却部にまで到達すると低温により凝結し、ディス
プレーサ・ピストン４とコールドヘッド２の間に入り込
み凝着を起こし、機関が停止してしまう。また、圧縮ピ
ストン１，７、圧縮ピストン２，１３の接触により発生
する摩擦熱が膨張室に伝わり冷却部にまで伝導すると冷
却性能が低下する。Since the conventional drive mechanism for the compression section 5 only supports the compression pistons 1 and 7 and the compression pistons 2 and 13 by the spiral springs 1 and 20 and the spiral springs 2 and 21, the reciprocating mechanism is reciprocated. When the moving compression pistons 1, 7 and the compression pistons 2, 13 move in the radial direction from the central axis, the cylinder 12 contacts the compression pistons 1, 7 and the cylinder 12 contacts the compression pistons 2, 13. Usually, the compression piston 1,7, compression piston 2 and 13 is made of a resin material with a self-lubricating property so as not to adhesion when in contact, but wear particles generated by friction, the expansion chamber from the compression chamber When it reaches the cooling part, it is condensed due to the low temperature, enters between the displacer piston 4 and the cold head 2 and causes adhesion, and the engine stops. Further, when the frictional heat generated by the contact between the compression pistons 1 and 7 and the compression pistons 2 and 13 is transmitted to the expansion chamber and conducted to the cooling portion, the cooling performance is deteriorated.
【０００６】また、上記のような問題点を解決するた
め、図７に示すような半径方向に剛性が高く、軸方向の
変位が大きく取れる渦巻状の溝が切られた板バネ２２を
弦巻バネ１，２０、弦巻バネ２，２１の代わりに採用し
た。この板バネ２２を各ピストン毎に同じ枚数だけ使用
した場合の圧縮部５を図８に示す。この板バネ２２によ
り、往復運動している圧縮ピストン１，７、圧縮ピスト
ン２，１３が中心軸から半径方向の加振力が働いた場合
でも、板バネ２２の剛性により、シリンダ１２と圧縮ピ
ストン１，７およびシリンダ１２と圧縮ピストン２，１
３は接触しない。しかし、板バネ２２が大きく変化した
ときにねじれ方向の力が発生し、圧縮部５をねじり振動
させ、振動が連通管１７を伝達し、コールドヘッド２へ
振動が伝わり、赤外線察像素子１の熱雑音の原因となる
という問題があった。Further, in order to solve the above problems, a spiral spring is used as shown in FIG. 7, which is a spiral spring having a high rigidity in the radial direction and a large axial displacement. 1, 20 and string springs 2 and 21 were used instead. FIG. 8 shows the compression unit 5 when the same number of leaf springs 22 is used for each piston. Even if the compression pistons 1 and 7 and the compression pistons 2 and 13 that are reciprocating by the leaf spring 22 act in a radial direction from the central axis, the rigidity of the leaf spring 22 causes the cylinder 12 and the compression piston to move. 1, 7 and cylinder 12 and compression pistons 2, 1
3 does not touch. However, when the leaf spring 22 largely changes, a force in the twisting direction is generated, causing the compression portion 5 to torsionally vibrate, the vibration is transmitted to the communication pipe 17, and the vibration is transmitted to the cold head 2. There was a problem of causing thermal noise.
【０００７】この発明は上記のような問題点を解消する
ためになされたもので、バネの固定方法により、ねじれ
方向の振動を打ち消し振動の少ないスターリングサイク
ルにより冷却を行う冷凍機の圧縮機部の駆動機構を得る
ことを目的とする。The present invention has been made in order to solve the above-mentioned problems, and a compressor part of a refrigerator for cooling by a Stirling cycle with less vibration by canceling vibration in a twisting direction by a spring fixing method. The purpose is to obtain a drive mechanism.
【０００８】[0008]
【課題を解決するための手段】この発明に係るスターリ
ング・サイクル冷凍機の駆動機構は、圧縮ピストン１，
７と、圧縮ピストン２，１３に取り付ける板バネ２２の
渦巻状の溝の方向をそれぞれのピストンで変えてボディ
１０に固定したものである。A drive mechanism for a Stirling cycle refrigerator according to the present invention comprises a compression piston 1,
7, and the direction of the spiral groove of the leaf spring 22 attached to the compression pistons 2 and 13 is changed by each piston and fixed to the body 10.
【０００９】[0009]
【作用】この発明におけるスターリング・サイクル冷凍
機の駆動機構は、圧縮ピストン１，７と、圧縮ピストン
２，１３に取り付ける板バネ２２の渦巻状の溝の方向を
それぞれのピストンで変えてボディ１０に固定したた
め、それぞれのピストンで板バネ２２により発生するね
じれ力の方向が逆方向になるため、ねじれ方向の振動を
打ち消し、振動を低減させる。In the drive mechanism of the Stirling cycle refrigerator according to the present invention, the directions of the spiral grooves of the compression pistons 1 and 7 and the leaf spring 22 attached to the compression pistons 2 and 13 are changed by the respective pistons to form the body 10. Since they are fixed, the directions of the torsional forces generated by the leaf springs 22 in the respective pistons are opposite to each other, so that the vibrations in the torsional directions are canceled and the vibrations are reduced.
【００１０】[0010]
【実施例】実施例１．以下この発明の一実施例を図につ
いて説明する。図１において、２３は圧縮ピストン１，
７を支え、圧縮ピストン１，７が上昇時に時計回り方向
のねじれ力が発生する板バネ１であり、ナット１，２５
により圧縮ピストンロッド１，８が固定されており、板
バネ１，２３周辺がボディ１０に固定され、板バネ１，
２３中心部が圧縮ピストンロッド１，８端に固定されて
いる。２４は圧縮ピストン２，１３を支え、圧縮ピスト
ン２，１３が上昇時に反時計回り方向のねじれ力が発生
する板バネ２であり、ナット２，２６により圧縮ピスト
ンロッド２，１４が固定されており、板バネ２，２４周
辺がボディ１０に固定され、板バネ２，２４中心部が圧
縮ピストンロッド２，１４端に固定されている。１〜１
９までの部品は従来の実施例と同様である。[Embodiment 1] An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 23 is a compression piston 1,
7 is a leaf spring 1 that generates a torsional force in a clockwise direction when the compression pistons 1 and 7 rise, and the nuts 1 and 25.
The compression piston rods 1 and 8 are fixed by the above, the periphery of the leaf springs 1 and 23 is fixed to the body 10, and the leaf springs 1 and 8 are fixed.
The center of 23 is fixed to the ends of the compression piston rods 1 and 8. Reference numeral 24 is a leaf spring 2 that supports the compression pistons 2 and 13 and generates a counterclockwise twisting force when the compression pistons 2 and 13 rise. The compression piston rods 2 and 14 are fixed by nuts 2 and 26. The periphery of the leaf springs 2 and 24 is fixed to the body 10, and the center of the leaf springs 2 and 24 is fixed to the ends of the compression piston rods 2 and 14. 1 to 1
Parts up to 9 are the same as in the conventional embodiment.
【００１１】次にこの発明によるスターリング・サイク
ル冷凍機の駆動機構が振動を低減させる原理について説
明する。圧縮ピストン１，７と圧縮ピストン２，１３が
同位相でそれぞれのリニヤモータにより駆動され、両ピ
ストン間の距離が近付くと圧縮ピストン１，７側には板
バネ１，２３により時計方向のねじれ力が発生するが、
圧縮ピストン１，７はシリンダ１２とは接触しておら
ず、時計方向のねじり振動が残る。一方、圧縮ピストン
２，１３側には板バネ２，２４により反時計方向のねじ
れ力が発生するが、圧縮ピストン２，１３はシリンダ１
２とは接触しておらず、反時計方向のねじり振動が残
る。Next, the principle by which the drive mechanism of the Stirling cycle refrigerator according to the present invention reduces vibrations will be described. The compression pistons 1 and 7 and the compression pistons 2 and 13 are driven by the linear motors in the same phase, and when the distances between the pistons approach each other, a clockwise torsional force is generated on the compression pistons 1 and 7 side by the leaf springs 1 and 23. Occurs,
The compression pistons 1 and 7 are not in contact with the cylinder 12, and the torsional vibration in the clockwise direction remains. On the other hand, on the compression pistons 2 and 13 side, a counterclockwise twisting force is generated by the leaf springs 2 and 24, but the compression pistons 2 and 13 are
It is not in contact with 2, and the counterclockwise torsional vibration remains.
【００１２】それぞれのピストンには同じ枚数の板バネ
１，２３、板バネ２，２４が装着されているので、方向
が反対で同じ力のねじり振動が発生し、振動が打ち消さ
れ、圧縮部５の振動を低減させる。両ピストン間の距離
が遠くなる時も前述と同様な反対の動作が行われ、圧縮
部５の振動は低減する。また、上記のように半径方向に
剛性が高く、軸方向の変位が大きく取れる板バネ１，２
３、２，２４の特性により、往復運動している圧縮ピス
トン１，７、圧縮ピストン２，１３に中心軸から半径方
向の加振力が働いた動いた場合でも、板バネ１，２３、
板バネ２，２４の剛性によりシリンダ１２と圧縮ピスト
ン１，７およびシリンダ１２と圧縮ピストン２，１３は
接触しない。Since the same number of leaf springs 1 and 23 and leaf springs 2 and 24 are mounted on each piston, torsional vibrations having the same force in opposite directions are generated, the vibrations are canceled, and the compression portion 5 is compressed. Reduce the vibration of. Even when the distance between the two pistons becomes long, the opposite operation as described above is performed, and the vibration of the compression portion 5 is reduced. Further, as described above, the leaf springs 1 and 2 having high rigidity in the radial direction and large axial displacement can be obtained.
Due to the characteristics of 3, 2, and 24, even when the reciprocating compression pistons 1 and 7 and the compression pistons 2 and 13 are acted by the exciting force in the radial direction from the central axis, the leaf springs 1 and 23,
Due to the rigidity of the leaf springs 2 and 24, the cylinder 12 does not contact the compression pistons 1 and 7 and the cylinder 12 does not contact the compression pistons 2 and 13.
【００１３】機関の冷却動作は従来例と同様であるので
ここでの説明は省略する。なお、上記実施例では複数枚
の板バネ１，２３周辺がボディ１０に固定され、中心部
が圧縮ピストンロッド１，８端に固定されており、一
方、複数枚の板バネ２，２４周辺がボディ１０に固定さ
れ、中心部が圧縮ピストンロッド２，１４端に固定され
ている場合について説明したが、図２に示すようにリニ
ヤモータのコイル１，９上部の圧縮ピストンロッド１，
８部に板バネ１，２３を取り付け、そしてリニヤモータ
のコイル２，１５上部の圧縮ピストンロッド１，１４部
に板バネ２，２４に取り付ければ、より半径方向の剛性
が上がり、いっそうシリンダ１２と圧縮ピストン１，７
およびシリンダ１２と圧縮ピストン２，１３との接触を
防止できる。Since the cooling operation of the engine is similar to that of the conventional example, the description thereof is omitted here. In the above embodiment, the periphery of the plurality of leaf springs 1 and 23 is fixed to the body 10 and the central portion is fixed to the ends of the compression piston rods 1 and 8, while the periphery of the plurality of leaf springs 2 and 24 is fixed. The case of being fixed to the body 10 and the center portion being fixed to the ends of the compression piston rods 2 and 14 has been described, but as shown in FIG.
If the leaf springs 1 and 23 are attached to the 8th portion, and the compression piston rods 1 and 14 above the coils 2 and 15 of the linear motor are attached to the leaf springs 2 and 24, the rigidity in the radial direction is increased and the compression with the cylinder 12 is further increased. Piston 1,7
Also, the contact between the cylinder 12 and the compression pistons 2 and 13 can be prevented.
【００１４】また、従来例では板バネ１，２３、板バネ
２，２４に余分な応力がかからないようにピストンごと
にねじり振動の方向を揃えていたが、板バネの強度に余
裕があるならば、図３に示すようにリニヤモータのコイ
ル１，９上部の圧縮ピストンロッド１，８部に板バネ
２，２４を固定し、コイル１，９下部の圧縮ピストンロ
ッド１，８部に板バネ１，２３を取り付け、リニヤモー
タのコイル２，１５上部の圧縮ピストンロッド１，１４
部に板バネ１，２３を、下部に板バネ２，２４を取り付
ければ、ピストン毎に振動が打ち消され、圧縮部５の振
動を低減させることができる。同様に図４に示すように
複数枚の板バネを、圧縮ピストン１，７が上昇時に時計
回りの方向のねじれ力が発生する板バネ１，２３と、反
時計回り方向のねじれ力が発生する板バネ２，２４交互
に重ね合わせることによっても、ピストン毎に振動が打
ち消され、圧縮部５の振動を低減させることができる。Further, in the conventional example, the directions of the torsional vibrations are aligned for each piston so that the leaf springs 1 and 23 and the leaf springs 2 and 24 are not stressed excessively. As shown in FIG. 3, the leaf springs 2 and 24 are fixed to the compression piston rods 1 and 8 above the coils 1 and 9 of the linear motor, and the leaf springs 1 and 8 are attached to the compression piston rods 1 and 8 below the coils 1 and 9, respectively. 23 is mounted, and the compression piston rods 1 and 14 above the coils 2 and 15 of the linear motor
If the leaf springs 1 and 23 are attached to the portions and the leaf springs 2 and 24 are attached to the lower portions, the vibration is canceled for each piston, and the vibration of the compression portion 5 can be reduced. Similarly, as shown in FIG. 4, a plurality of leaf springs are generated, and leaf springs 1 and 23 that generate a twisting force in a clockwise direction when the compression pistons 1 and 7 rise and a twisting force in a counterclockwise direction. By alternately superposing the leaf springs 2 and 24, the vibration is canceled for each piston, and the vibration of the compression portion 5 can be reduced.
【００１５】[0015]
【発明の効果】以上説明したようにこの発明のスターリ
ング・サイクル冷凍機の駆動機構は、圧縮ピストン１，
７と、圧縮ピストン２，１３に取り付ける板バネ１，２
３、板バネ２，２４の渦巻状の溝方向をそれぞれのピス
トンで変えてボディ１０に固定したため、それぞれのピ
ストンで板バネにより発生するねじれ力の方向が逆方向
になり、ねじれ方向の振動を打ち消し、振動を低減させ
る効果がある。As described above, the drive mechanism of the Stirling cycle refrigerator of the present invention includes the compression piston 1,
7 and leaf springs 1 and 2 attached to the compression pistons 2 and 13
3. Since the spiral groove directions of the leaf springs 2 and 24 are changed by the respective pistons and fixed to the body 10, the directions of the torsional forces generated by the leaf springs in the respective pistons are opposite to each other, and vibrations in the torsional direction are generated. It has the effect of canceling and reducing vibration.
【図１】この発明の一実施例によるスターリング・サイ
クル冷凍機の駆動機構を示す断面側面図（ａ）で、
（ｂ）は板バネ１の正面拡大図、（ｃ）は板バネ２の正
面拡大図である。FIG. 1 is a sectional side view (a) showing a drive mechanism of a Stirling cycle refrigerator according to an embodiment of the present invention,
(B) is an enlarged front view of the leaf spring 1, and (c) is an enlarged front view of the leaf spring 2.
【図２】この発明の他の実施例を示すスターリング・サ
イクル冷凍機の駆動機構を示す断面側面図である。FIG. 2 is a sectional side view showing a driving mechanism of a Stirling cycle refrigerator showing another embodiment of the present invention.
【図３】この発明の他の実施例を示すスターリング・サ
イクル冷凍機の駆動機構を示す断面側面図である。FIG. 3 is a sectional side view showing a drive mechanism of a Stirling cycle refrigerator showing another embodiment of the present invention.
【図４】この発明の他の実施例を示すスターリング・サ
イクル冷凍機の駆動機構を示す断面側面図である。FIG. 4 is a sectional side view showing a driving mechanism of a Stirling cycle refrigerator showing another embodiment of the present invention.
【図５】従来の実施例を示す断面側面図である。FIG. 5 is a sectional side view showing a conventional example.
【図６】従来の実施例を示す断面側面図である。FIG. 6 is a sectional side view showing a conventional example.
【図７】従来の板バネの形状を示す正面図である。FIG. 7 is a front view showing the shape of a conventional leaf spring.
【図８】このバネを駆動機構に採用したときの断面側面
図である。FIG. 8 is a sectional side view when this spring is used in a drive mechanism.
１ 赤外線察像素子 ２ コールド・ヘッド ３ 再生器 ４ ティスプレーサ・ピストン ５ 圧縮機部 ６ 膨張室 ７ 圧縮ピストン１ ８ 圧縮ピストンロッド１ ９ コイル１ １０ ボディ １１ マグネット １２ シリンダ １３ 圧縮ピストン２ １４ 圧縮ピストンロッド２ １５ コイル２ １６ マグネット２ １７ 連通管 １８ 圧縮室 １９ バネ ２０ 弦巻バネ１ ２１ 弦巻バネ２ ２２ 板バネ ２３ 板バネ１ ２４ 板バネ２ ２５ ナット１ ２６ ナット２ 1 Infrared Imaging Element 2 Cold Head 3 Regenerator 4 Tip Placer Piston 5 Compressor Section 6 Expansion Chamber 7 Compression Piston 1 8 Compression Piston Rod 1 9 Coil 1 10 Body 11 Magnet 12 Cylinder 13 Compression Piston 2 14 Compression Piston Rod 2 15 Coil 2 16 Magnet 2 17 Communication pipe 18 Compression chamber 19 Spring 20 String winding spring 1 21 String winding spring 2 22 Leaf spring 23 Leaf spring 1 24 Leaf spring 2 25 Nut 1 26 Nut 2
Claims (1)
冷凍機の圧力変動を作り出す圧縮機部のうち、２つの圧
縮ピストンをリニヤモータによって対向に駆動させ、圧
縮ピストンと圧縮機部の本体であるボディと一体になっ
たシリンダの間はシールされ、上記２つの圧縮ピストン
とシリンダに囲まれた圧縮空間の圧力が変化してディス
プレーサ部に圧力変動を伝える形式の駆動機構におい
て、半径方向に剛性が高く、軸方向の変位が大きく取れ
る渦巻状の溝が切られた板バネで、ピストンが上昇した
時に上記板バネに発生するねじれ力の方向を、それぞれ
の圧縮ピストンで違う方向になるように、かつ同数の複
数枚の板バネを、それぞれの圧縮ピストンロッドとボデ
ィに固定したことを特徴とするスターリング・サイクル
冷凍機の駆動機構。1. A compressor unit that creates pressure fluctuations in a refrigerator that cools by means of a Stirling cycle, two compression pistons are driven oppositely by a linear motor, and the compression piston and the body that is the main body of the compressor unit are integrated. In the drive mechanism of the type in which the gap between the cylinders is sealed and the pressure in the compression space surrounded by the two compression pistons and the cylinder changes to transmit the pressure fluctuation to the displacer, the rigidity is high in the radial direction and the axial direction is high. Is a leaf spring with a spiral groove cut so that the direction of the torsional force generated in the leaf spring when the piston rises is different for each compression piston, and the same number of A drive mechanism for a Stirling cycle refrigerator characterized in that a leaf spring is fixed to each compression piston rod and body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3006824A JP2684851B2 (en) | 1991-01-24 | 1991-01-24 | Stirling cycle refrigerator drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3006824A JP2684851B2 (en) | 1991-01-24 | 1991-01-24 | Stirling cycle refrigerator drive mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04263751A JPH04263751A (en) | 1992-09-18 |
| JP2684851B2 true JP2684851B2 (en) | 1997-12-03 |
Family
ID=11648971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3006824A Expired - Lifetime JP2684851B2 (en) | 1991-01-24 | 1991-01-24 | Stirling cycle refrigerator drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2684851B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117861A (en) * | 1997-10-20 | 1999-04-27 | Matsushita Electric Ind Co Ltd | Linear compressor |
| JP4529328B2 (en) * | 2001-07-31 | 2010-08-25 | ダイキン工業株式会社 | Compressor |
| JP5754642B2 (en) | 2011-09-16 | 2015-07-29 | いすゞ自動車株式会社 | Free piston type Stirling engine |
| CN110274406B (en) * | 2019-06-28 | 2021-05-11 | 上海理工大学 | Cold head structure and split type free piston Stirling refrigerating machine |
| CN110274407A (en) * | 2019-06-28 | 2019-09-24 | 上海理工大学 | A kind of split type sterlin refrigerator with novel cold head structure |
-
1991
- 1991-01-24 JP JP3006824A patent/JP2684851B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04263751A (en) | 1992-09-18 |
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