JPH0322543Y2

JPH0322543Y2 -

Info

Publication number: JPH0322543Y2
Application number: JP4107386U
Authority: JP
Priority date: 1986-03-20
Filing date: 1986-03-20
Publication date: 1991-05-16
Also published as: JPS62165447U

Description

【考案の詳細な説明】〔考案の目的〕（産業上の利用分野）本考案は、スターリングエンジン用軸封装置に
関するものである。[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a shaft sealing device for a Stirling engine.

（従来の技術）従来の此の種の装置、例えば、実開昭59−
130050号公報に開示されたものにおいては、第２
図に示すように、スターリングエンジン１の作動
ピストン２は、クランク室３のガイドピストン４
にロツド５を介して連結される。作動ピストン２
により画定される作動空間６とクランク室３との
間の中間部材に、作動空間６からクランク室３側
へと、ガスシール７、中間室８、スクレーパシー
ル９、高圧オイル室１０、三角オイルシール１
１、低圧オイル室１２およびガスシール１３を並
設させる。中間室８をフイルター１４と逆止弁１
５を介して作動空間６に連通させる。(Prior art) Conventional devices of this kind, for example,
In what was disclosed in Publication No. 130050, the second
As shown in the figure, the working piston 2 of the Stirling engine 1 is connected to the guide piston 4 of the crank chamber 3.
is connected via rod 5. Working piston 2
A gas seal 7, an intermediate chamber 8, a scraper seal 9, a high pressure oil chamber 10, and a triangular oil seal are installed in the intermediate member between the working space 6 and the crank chamber 3 defined by the working space 6 toward the crank chamber 3. 1
1. A low pressure oil chamber 12 and a gas seal 13 are installed in parallel. Intermediate chamber 8 is connected to filter 14 and check valve 1
It communicates with the working space 6 via 5.

高圧オイル室１０を、高圧オイルタンク１６を
介して中間室８に連通させる。この結果、高圧オ
イル室１０は、高圧オイルタンク１６を介して作
動空間６の作動ガスの最低作動圧を作用させる。 A high pressure oil chamber 10 is communicated with an intermediate chamber 8 via a high pressure oil tank 16. As a result, the high pressure oil chamber 10 applies the lowest working pressure of the working gas in the working space 6 via the high pressure oil tank 16 .

低圧オイル室１２を、大気に開放された低圧オ
イルタンク１７に連通させ且つ該低圧オイルタン
ク１７をクランク室３のオイル室に連通させ、低
圧オイルタンク１７のオイルレベルが低下した
時、クランク室３から低圧オイルタンク室１７に
オイルを補給する。 The low pressure oil chamber 12 is communicated with a low pressure oil tank 17 open to the atmosphere, and the low pressure oil tank 17 is communicated with the oil chamber of the crank chamber 3, so that when the oil level in the low pressure oil tank 17 decreases, the low pressure oil tank 17 is opened to the atmosphere. Oil is supplied to the low-pressure oil tank chamber 17 from there.

前述した構成において、ガスシール７を介して
作動空間６から中間室８を通つて高圧オイル室１
０に入つた作動ガスは、高圧オイルタンク１６を
介して中間室８へ還流する。一方、高圧オイル室
１０から低圧オイル室１２に入つた作動ガスは、
低圧オイル室１２でオイルに捕獲され、低圧オイ
ルタンク１７から大気に放出される。又、クラン
ク室３のフレオンガス封入室１８から低圧オイル
室１２に入つたフレオンガスも低圧オイルタンク
１７から大気に放出される。低圧オイル室１２か
らクランク室３にガスシール１３を介して漏出す
るオイルは、クランク室３のオイルを低圧オイル
タンク１７に補給させることで、低圧オイルタン
ク１７のオイル量を常時一定に保つ。 In the above-described configuration, the high pressure oil chamber 1 is passed from the working space 6 through the intermediate chamber 8 via the gas seal 7.
The working gas that has entered the tank returns to the intermediate chamber 8 via the high-pressure oil tank 16. On the other hand, the working gas entering the low pressure oil chamber 12 from the high pressure oil chamber 10 is
It is captured by oil in the low pressure oil chamber 12 and released into the atmosphere from the low pressure oil tank 17. Further, the Freon gas that has entered the low pressure oil chamber 12 from the Freon gas filling chamber 18 of the crank chamber 3 is also released from the low pressure oil tank 17 to the atmosphere. The oil leaking from the low pressure oil chamber 12 to the crank chamber 3 via the gas seal 13 is kept constant at all times by replenishing the oil in the crank chamber 3 to the low pressure oil tank 17.

（考案が解決しようとする問題点）しかしながら、低圧オイル室１２へ侵入したフ
レオンガスは、シール１１を経て高圧オイル室１
０、更には作動ガスたるヘリウムガス中に混入し
たりすると、このフレオンガスが高温側作動空間
内において熱分解して腐食性の強いガスとなり、
エンジンの構成部分を腐食するといる可能性がな
いとはいえなかつた。(Problem to be solved by the invention) However, the Freon gas that has entered the low pressure oil chamber 12 passes through the seal 11 and enters the high pressure oil chamber 12.
0, and furthermore, if it is mixed into helium gas, which is the working gas, this Freon gas will thermally decompose in the high temperature side working space and become a highly corrosive gas.
It could not be ruled out that there was a possibility that the engine components would be corroded.

[Structure of the idea]

（問題点を解決するための手段）上記不具合を解決するための手段は、低圧オイ
ル室１２とクランク室３側のシール１３との間に
シールおよび中間室を設け、且つ該中間室を真空
ポンプにて吸引したことである。 (Means for solving the problem) A means for solving the above problem is to provide a seal and an intermediate chamber between the low-pressure oil chamber 12 and the seal 13 on the crank chamber 3 side, and to connect the intermediate chamber with a vacuum pump. It was aspirated at.

（作用）もし、フレオンガスは溶け込んだオイルが中間
室に入つたとしても、真空ポンプにて外部に排出
されるので、低圧オイル室に侵入することなく、
従来の不具合を解消することができる。(Function) Even if dissolved Freon gas enters the intermediate chamber, it will be discharged outside by the vacuum pump, so it will not enter the low pressure oil chamber.
Conventional problems can be resolved.

（実施例）以下、本考案の一実施例を第１図にもとづいて
説明するが、第２図示のものと共通する個所の説
明は省略する。(Embodiment) Hereinafter, an embodiment of the present invention will be described based on FIG. 1, but explanation of parts common to those shown in FIG. 2 will be omitted.

低圧オイル室１２内のオイルを保持するシール
２１に隣接して中間室２２およびシール１３が配
設される。中間室２２は、エンジン作動時、真空
ポンプ２０にて吸引される。また、ロツド５の往
復動ストローク長より離れた位置にシール１３が
位置する。 An intermediate chamber 22 and a seal 13 are arranged adjacent to a seal 21 that retains oil in the low-pressure oil chamber 12. The intermediate chamber 22 is sucked by the vacuum pump 20 when the engine is operating. Further, the seal 13 is located at a position farther away than the reciprocating stroke length of the rod 5.

これにより、低圧オイル室１２の油に、フレオ
ンガスが溶け込んだ油が行くことがなくなり油を
媒介して、フレオンガスが低圧オイル室１２へ侵
入することがなくなる。 As a result, the oil containing Freon gas dissolved in the oil in the low-pressure oil chamber 12 will not go, and the Freon gas will not enter the low-pressure oil chamber 12 via oil.

[Effect of idea]

以上述べたように、本考案は、スターリングエ
ンジンの作動空間とその一部がフレオン圧縮機と
なるクランク室との間に位置し且つロツドを貫通
させる中間部材に、前記作動空間側から前記クラ
ンク室側へと順次中間室、高圧オイル室および低
圧オイル室を配設し、前記高圧オイル室を高圧オ
イルタンクを介して前記作動空間および前記中間
室に逆止弁を介して連通させ、前記低圧オイル室
を低圧オイルタンクを介して前記クランク室のオ
イル室に連通させたスターリングエンジンにおい
て、前記低圧オイルタンクと前記クランク室との
間に第１シール部材、真空中間室および第２シー
ル部材を設け、前記真空中間室を真空ポンプで吸
引すると共に、前記両シール部材間の距離を前記
ロツドのストローク長と等しからしめたので、次
のような効果がある。 As described above, the present invention provides an intermediate member that is located between the working space of a Stirling engine and the crank chamber, a part of which becomes a Freon compressor, and that passes through the rod, from the working space side to the crank chamber. An intermediate chamber, a high-pressure oil chamber, and a low-pressure oil chamber are sequentially disposed toward the sides, and the high-pressure oil chamber is communicated with the working space and the intermediate chamber via a high-pressure oil tank through a check valve, and the low-pressure oil In a Stirling engine in which a chamber is communicated with an oil chamber of the crank chamber via a low pressure oil tank, a first seal member, a vacuum intermediate chamber, and a second seal member are provided between the low pressure oil tank and the crank chamber, Since the vacuum intermediate chamber is suctioned by a vacuum pump and the distance between the two seal members is made equal to the stroke length of the rod, the following effects can be obtained.

真空中間室にフレオンガスが溶解したオイルが
入つても、真空ポンプにて排出されるので、フレ
オンガスが低圧オイルタンクに侵入することがな
い。 Even if oil with Freon gas dissolved in it enters the vacuum intermediate chamber, it is discharged by the vacuum pump, so Freon gas will not enter the low-pressure oil tank.

[Brief explanation of the drawing]

第１図はこの考案の一例のスターリングエンジ
ン用軸封装置の説明図、および第２図は従来技術
の説明図である。１……スターリングエンジン、２……作動ピス
トン、３……クランク室、５……ロツド、６……
作動空間、８……中間室、１０……高圧オイル
室、１２……低圧オイル室、１３……第２シール
部材、１６……高圧オイルタンク、１７……低圧
オイルタンク、２０……真空ポンプ、２１……第
１シール部材、２２……真空中間室。 FIG. 1 is an explanatory diagram of a shaft sealing device for a Stirling engine as an example of this invention, and FIG. 2 is an explanatory diagram of a conventional technique. 1... Stirling engine, 2... Working piston, 3... Crank chamber, 5... Rod, 6...
Working space, 8... Intermediate chamber, 10... High pressure oil chamber, 12... Low pressure oil chamber, 13... Second seal member, 16... High pressure oil tank, 17... Low pressure oil tank, 20... Vacuum pump , 21...first sealing member, 22...vacuum intermediate chamber.

Claims

[Scope of utility model registration request]

An intermediate member that is located between the working space of the Stirling engine and the crank chamber, a part of which becomes a Freon compressor, and that passes through the rod, is provided with an intermediate chamber and high-pressure oil in order from the working space side to the crank chamber side. and a low pressure oil chamber, the high pressure oil chamber is communicated with the working space via a high pressure oil tank and a check valve, and communicated with the intermediate chamber via the high pressure oil tank, and the high pressure oil chamber is communicated with the intermediate chamber via the high pressure oil tank. in the Stirling engine, in which a first seal member, a vacuum intermediate chamber, and a second seal member are provided between the low pressure oil tank and the crank chamber, and the A shaft sealing device for a Stirling engine, in which a vacuum intermediate chamber is suctioned by a vacuum pump, and the distance between the two sealing members is made equal to the stroke length of the rod.