JP2002250569A - Displacer of cold storage equipment - Google Patents
Displacer of cold storage equipmentInfo
- Publication number
- JP2002250569A JP2002250569A JP2001046893A JP2001046893A JP2002250569A JP 2002250569 A JP2002250569 A JP 2002250569A JP 2001046893 A JP2001046893 A JP 2001046893A JP 2001046893 A JP2001046893 A JP 2001046893A JP 2002250569 A JP2002250569 A JP 2002250569A
- Authority
- JP
- Japan
- Prior art keywords
- displacer
- sealing member
- stage
- wear ring
- horizontal direction
- 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
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＧＭ冷凍機、スター
リング冷凍機等の蓄冷式極低温冷凍機に使用される蓄冷
器のディスプレーサーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerator displacer used for a regenerative cryogenic refrigerator such as a GM refrigerator or a Stirling refrigerator.
【０００２】[0002]
【従来の技術】図３は公知の２段型ＧＭ冷凍機であっ
て、該冷凍機の２段型蓄冷器を断面図で表している。１
はＧＭ冷凍機の本体、２は圧縮機、３は作動ガス管路、
４は２段型蓄冷器で本体１に固着されている。2. Description of the Related Art FIG. 3 is a cross-sectional view of a known two-stage GM refrigerator, and a two-stage regenerator of the refrigerator. 1
Is the body of the GM refrigerator, 2 is the compressor, 3 is the working gas line,
Reference numeral 4 denotes a two-stage regenerator fixed to the main body 1.
【０００３】前記蓄冷器４は第１段シリンダ４ａ1と該
シリンダに連結されている小径の第２段シリンダ４ａ2
と、これら両シリンダー内で夫々往復動される第１段デ
ィスプレーサー４ｂ1、第２段ディスプレーサー４ｂ2か
ら構成されている。なお、Ｅ1、Ｅ2は前記ディスプレー
サー４ｂ1、ディスプレーサー４ｂ2内に充填されている
金網積層体等からなる蓄冷材、Ｃ1は第１冷却ステー
ジ、Ｃ2は第２冷却ステージである。５は作動ガスの漏
洩を防止するためのシール部材であって、図４に詳細構
造を示す。第１段ディスプレーサー４ｂ1の上端部に穿
設した凹溝内にゴム製Ｏリング５ａを挿入しその外側に
樹脂製シール５ｂを装着した構造である。[0003] The regenerator 4 and the second stage cylinder 4a 2 of a small diameter which is connected to the first stage cylinder 4a 1 and the cylinder
When the first stage displacer 4b 1 which are respectively reciprocated within these two cylinders, and a second stage displacer 4b 2. In addition, E 1 and E 2 are the cold storage materials made of the wire mesh laminate and the like filled in the displacer 4b 1 and the displacer 4b 2 , C 1 is a first cooling stage, and C 2 is a second cooling stage. . Reference numeral 5 denotes a seal member for preventing leakage of the working gas, and its detailed structure is shown in FIG. The first-stage displacer 4b 1 has a structure in which a rubber O-ring 5a is inserted into a concave groove formed in an upper end portion thereof, and a resin seal 5b is mounted outside the O-ring 5a.
【０００４】極低温を得るためのＧＭ冷凍機において、
冷凍能力が大容量のものは一般的に１段目の蓄熱のため
の蓄冷材の量を多くする必要があり、ディスプレーサー
の外径が大きくなりディスプレーサーの重量も増大す
る。In a GM refrigerator for obtaining a very low temperature,
When the refrigerating capacity is large, it is generally necessary to increase the amount of the cold storage material for the first-stage heat storage, so that the outer diameter of the displacer increases and the weight of the displacer also increases.
【０００５】冷凍能力が小容量でディスプレーサーが小
型の場合は、蓄冷器４を水平方向にしてディスプレーサ
ーを水平方向に往復動させてもシール部材に別段支障を
来すことがないが、ディスプレーサが大型（外径：９０
ｍｍ以上）になりディスプレーサーの重量が増大する
と、このようなディスプレーサーを水平方向に往復動さ
せると、ディスプレーサーの自重によりシール部材が偏
摩耗し、所定のメンテナンス時間が到来する以前に性能
劣化を起こす恐れがある。In the case where the refrigerating capacity is small and the displacer is small, even if the regenerator 4 is moved in the horizontal direction and the displacer is reciprocated in the horizontal direction, there is no particular problem in the seal member. Is large (outer diameter: 90
mm or more) and the weight of the displacer increases, when such a displacer is reciprocated in the horizontal direction, the seal member is unevenly worn due to the weight of the displacer, and the performance is deteriorated before the predetermined maintenance time comes. May be caused.
【０００６】[0006]
【発明が解決しようとする課題】本発明は極低温冷凍機
の蓄冷器の取り付け角度を水平方向は基よりあらゆる方
向に向けてもシール部材の性能劣化を防止し、冷凍能力
の低下を防止することを目的とするものである。SUMMARY OF THE INVENTION The present invention prevents the deterioration of the performance of the seal member even when the mounting angle of the regenerator of the cryogenic refrigerator is oriented in all directions from the horizontal direction to prevent the deterioration of the refrigerating ability. The purpose is to do so.
【０００７】[0007]
【課題を解決するための手段】本発明は、蓄冷器のディ
スプレーサーの外周にフッ素樹脂製のウエアーリングを
装着したことを特徴とする。The present invention is characterized in that a wear ring made of a fluororesin is attached to the outer periphery of a displacer of a regenerator.
【０００８】[0008]
【発明の実施の形態】本発明にかかる蓄冷器の実施形態
について図１および図２を参照して説明する。なお、図
中同一部品には同一符号を付し説明の重複を省略する。
図１は本発明にかかるディスプレーサーの要部の拡大断
面図で、シール部材５（ゴム製Ｏリング５ａ、樹脂製シ
ール５ｂ）の構造は公知のものと同一構造である。本発
明はディスプレーサー４ｂ1の上半部の高温（常温）領
域外周にフッ素樹脂製のウエアーリング６を装着してい
る。ウエアーリングは複数個装着してもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a regenerator according to the present invention will be described with reference to FIGS. In the drawings, the same components are denoted by the same reference numerals, and the description will not be repeated.
FIG. 1 is an enlarged sectional view of a main part of a displacer according to the present invention. The structure of a seal member 5 (a rubber O-ring 5a, a resin seal 5b) is the same as a known structure. The present invention is fitted with fluororesin Wear ring 6 to a high temperature (room temperature) region periphery of the top half of the displacer 4b 1. A plurality of wear rings may be attached.
【０００９】ウエアーリングは、図２に示すように厚み
が最大２ｍｍ、幅が３〜２０ｍｍの４弗化エチレン等の
フッ素樹脂製で、ディスプレーサー４ｂ1の上半部の高
温領域に該当する箇所の外周に穿設された凹溝にウエア
ーリング６の外周面がディスプレーサー４ｂ1の外周面
よりも若干突設するように装着されている。[0009] Wear ring, the maximum thickness 2mm as shown in FIG. 2, made of a fluororesin such as ethylene tetrafluoride of a width of 3 to 20 mm, portion corresponding to the high temperature region of the top half of the displacer 4b 1 the outer peripheral surface of Wear ring 6 in drilled groove on the outer periphery is mounted to slightly protrude from the outer peripheral surface of the displacer 4b 1 of.
【００１０】上記のウエアーリング６をディスプレーサ
ーの外周面に装着したことによりシール部材５の補助的
シール作用を行なうことは勿論のこと、シリンダーとデ
ィスプレーサー間の接触を均一にすることができる。ま
た、ディスプレーサーを水平方向に往復動させる場合ウ
エアーリング６でディスプレーサーを支承するため、シ
ール部材５に過大な偏荷重がかかるのを防止できるとと
もに駆動モーターへの負荷も低減できる。By mounting the above-mentioned wear ring 6 on the outer peripheral surface of the displacer, not only the auxiliary sealing function of the seal member 5 can be performed, but also the contact between the cylinder and the displacer can be made uniform. Further, when the displacer is reciprocated in the horizontal direction, the displacer is supported by the wear ring 6, so that it is possible to prevent an excessive bias load from being applied to the seal member 5 and reduce the load on the drive motor.
【００１１】[0011]
【発明の効果】本発明によれば、ウエアーリング６をデ
ィスプレーサーの外周面に装着したことにより作動ガス
のシールが一層確実になり極低温冷凍機の冷凍能力が向
上できる。また、大型のディスプレーサーを水平方向に
往復動させる仕様の場合でも、シール部材が偏摩耗して
性能劣化を早めることがなく、駆動モータへの負荷も低
減できるので運転コストを低減できる。According to the present invention, since the wear ring 6 is mounted on the outer peripheral surface of the displacer, the sealing of the working gas can be more reliably performed, and the refrigeration capacity of the cryogenic refrigerator can be improved. Further, even in the case of a specification in which a large displacer is reciprocated in the horizontal direction, the seal member does not wear unevenly and deterioration of the performance is not accelerated, and the load on the drive motor can be reduced, so that the operating cost can be reduced.
【図１】本発明にかかる蓄冷器のディスプレーサーの要
部断面説明図。FIG. 1 is an explanatory sectional view of a main part of a displacer of a regenerator according to the present invention.
【図２】本発明にかかるウエアーリングの説明図。FIG. 2 is an explanatory diagram of a wear ring according to the present invention.
【図３】公知の２段型ＧＭ冷凍機の要部断面説明図FIG. 3 is an explanatory sectional view of a main part of a known two-stage GM refrigerator.
【図４】公知の蓄冷器のディスプレーサーの要部断面説
明図。FIG. 4 is an explanatory sectional view of a main part of a known cool storage device displacer.
１ ＧＭ冷凍機本体 ５ シ
ール部材 ２ 圧縮機 ５ａ ゴ
ム製Ｏリング ３ 作動ガス管路 ５ｂ 樹
脂製シール ４ ２段型蓄冷器 ６ ウ
エアーリング ４ａ1 第１段シリンダ Ｃ1
第１冷却ステージ ４ａ2 第２段シリンダ Ｃ2
第２冷却ステージ ４ｂ1 第１段ディスプレーサー Ｅ1、Ｅ2
蓄冷材 ４ｂ2 第２段ディスプレーサーDESCRIPTION OF SYMBOLS 1 GM refrigerator main body 5 Seal member 2 Compressor 5a Rubber O-ring 3 Working gas pipeline 5b Resin seal 4 Two-stage regenerator 6 Wear ring 4a 1 First-stage cylinder C 1
First cooling stage 4a 2 Second stage cylinder C 2
Second cooling stage 4b 1 First stage displacer E 1 , E 2
Cool storage material 4b 2nd stage displacer
Claims (3)
ているディスプレーサーの前記シール部材装着箇所より
低温側位置のディスプレーサー外周面にウエアーリング
を装着したことを特徴とする蓄冷器のディスプレーサ
ー。1. A regenerator according to claim 1, wherein a wear ring is mounted on an outer peripheral surface of the displacer at a position lower in temperature than the seal member mounting point of the displacer having a seal member mounted on an outer periphery of a tip end on a high temperature side. Displacer.
サーの高温側上半部に位置する箇所であることを特徴と
する請求項１記載の蓄冷器のディスプレーサー。2. A displacer for a regenerator according to claim 1, wherein the mounting portion of the wear ring is located at an upper half portion of the displacer on the high temperature side.
を特徴とする請求項１または２記載の蓄冷器のディスプ
レーサー。3. A displacer for a regenerator according to claim 1, wherein the wear ring is made of a fluororesin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001046893A JP3895552B2 (en) | 2001-02-22 | 2001-02-22 | Regenerator displacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001046893A JP3895552B2 (en) | 2001-02-22 | 2001-02-22 | Regenerator displacer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002250569A true JP2002250569A (en) | 2002-09-06 |
| JP3895552B2 JP3895552B2 (en) | 2007-03-22 |
Family
ID=18908431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001046893A Expired - Fee Related JP3895552B2 (en) | 2001-02-22 | 2001-02-22 | Regenerator displacer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3895552B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205608A (en) * | 2006-01-31 | 2007-08-16 | Sumitomo Heavy Ind Ltd | Cold accumulator type refrigerating machine |
-
2001
- 2001-02-22 JP JP2001046893A patent/JP3895552B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205608A (en) * | 2006-01-31 | 2007-08-16 | Sumitomo Heavy Ind Ltd | Cold accumulator type refrigerating machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3895552B2 (en) | 2007-03-22 |
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