JPH0362899B2 - - Google Patents
Info
- Publication number
- JPH0362899B2 JPH0362899B2 JP61058577A JP5857786A JPH0362899B2 JP H0362899 B2 JPH0362899 B2 JP H0362899B2 JP 61058577 A JP61058577 A JP 61058577A JP 5857786 A JP5857786 A JP 5857786A JP H0362899 B2 JPH0362899 B2 JP H0362899B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- chamber
- pressure
- check valve
- gas
- 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
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- F02G1/053—Component parts or details
- F02G1/0535—Seals or sealing arrangements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、スターリング機関の軸封装置に関す
る。DETAILED DESCRIPTION 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）
スターリング機関の出力は、作動ガスの平均圧
力にほゞ比例することから、作動空間を作る作動
ピストンとクランク機構等の出力取出機構とを連
結するロツドを介して作動ガスが洩れ該ガスの圧
が下がるのを防ぐことは必要なことである。この
ため、特公昭55−22621号公報に開示される如き
軸封装置が提案されている。同公報に示される例
を第２図に示す。作動空間１からガイドピストン
２への延在するロツド３まわりの中間部材４に、
ガスシール５、中間室６、オイルスクレーパ７、
オイル室８、オイルシール９を配し、オイルスク
レーパ７をスプリング１０によりオイルシール９
側に押える。オイル室８は、オイル分離器１１に
通じ、又、オイル分離室１２はフイルターおよび
回路１３と逆止弁１４を介して作動空間１に通じ
る。(Prior art) Since the output of a Stirling engine is approximately proportional to the average pressure of the working gas, the working gas leaks through the rod that connects the working piston that creates the working space and the output extraction mechanism such as a crank mechanism. It is necessary to prevent the pressure of the gas from dropping. For this reason, a shaft sealing device as disclosed in Japanese Patent Publication No. 55-22621 has been proposed. An example shown in the publication is shown in FIG. In the intermediate member 4 around the rod 3 extending from the working space 1 to the guide piston 2,
gas seal 5, intermediate chamber 6, oil scraper 7,
An oil chamber 8 and an oil seal 9 are arranged, and the oil scraper 7 is moved by a spring 10 into the oil seal 9.
Press to the side. The oil chamber 8 communicates with an oil separator 11 , and the oil separation chamber 12 communicates with the working space 1 via a filter and circuit 13 and a check valve 14 .
（発明が解決しようとする問題点）
第２図に示す従来例では、中間室６へガスシー
ル５を介して洩れた作動ガスがオイル室８を通つ
てオイル分離器１１に入り、作動空間１の圧が下
がると、回路１３と逆止弁１４を介して作動ガス
が作動空間１に逆流する。しかし、オイル室８を
介して作動ガスをオイル分離器１１に戻すため、
ガスを含んだオイルがオイルシール９のシール面
に付着し、やがて、作動ガスがガイドピストン２
側に洩れることになる。(Problems to be Solved by the Invention) In the conventional example shown in FIG. When the pressure decreases, the working gas flows back into the working space 1 via the circuit 13 and the check valve 14. However, since the working gas is returned to the oil separator 11 via the oil chamber 8,
Oil containing gas adheres to the sealing surface of the oil seal 9, and the working gas eventually reaches the guide piston 2.
It will leak to the side.
（問題点を解決するための手段）
本発明は、オイル室とオイル分離室とを連通さ
せ、これとは別に、中間室とオイル分離室とを逆
止弁を介して連通させ、又、中間室と増圧弁の下
流側とを逆止弁を介して連通させる技術的手段を
用い、前述した問題点を解決する。(Means for Solving the Problems) The present invention allows an oil chamber and an oil separation chamber to communicate with each other, and separately communicates an intermediate chamber and an oil separation chamber via a check valve. The above-mentioned problems are solved by using a technical means of communicating the chamber and the downstream side of the pressure increase valve via a check valve.
（作用）
最低サイクル圧ラインの作動ガスを上昇させる
と、第４の逆止弁を介して中間室の圧も上り、ガ
スシールの両側の圧の差を小さくし、又、ライン
圧を下げると、第３の逆止弁を介して中間室のガ
ス圧をラインに戻すことができる。ガスシールを
介して中間室に入つたガスは、オイル室に入るこ
となくオイル分離室又はラインに戻される。又、
オイルスクレーパを介して中間室へ入つたオイル
は第３の逆止弁を介してガスと共にオイル分離室
に戻される。(Function) When the working gas in the lowest cycle pressure line rises, the pressure in the intermediate chamber also rises via the fourth check valve, reducing the pressure difference on both sides of the gas seal, and when the line pressure is lowered. , the gas pressure in the intermediate chamber can be returned to the line via a third check valve. Gas entering the intermediate chamber via the gas seal is returned to the oil separation chamber or line without entering the oil chamber. or,
The oil that has entered the intermediate chamber via the oil scraper is returned to the oil separation chamber along with the gas via the third check valve.
（実施例）
第１図に本発明の実施例を示す。圧縮室となる
作動空間１５を作動ピストン１６によりシリンダ
１７内に作り、作動ピストン１６をガイドピスト
ン１８にロツド１９を介して連結する。ガイドピ
ストン１８はクランク機構等の出力取出機構と連
動する。ロツド１９は中間部材２０を貫通する。
中間部材２０には、作動空間１５側から、ガスシ
ール２１、中間室２２、オイルスクレーパ２３、
オイル室２４およびオイルシール２５を順次配
す。(Example) FIG. 1 shows an example of the present invention. A working space 15 serving as a compression chamber is created in the cylinder 17 by a working piston 16, and the working piston 16 is connected to a guide piston 18 via a rod 19. The guide piston 18 is interlocked with an output extraction mechanism such as a crank mechanism. Rod 19 passes through intermediate member 20.
The intermediate member 20 includes, from the working space 15 side, a gas seal 21, an intermediate chamber 22, an oil scraper 23,
An oil chamber 24 and an oil seal 25 are arranged in sequence.
作動空間１５は、第１の逆止弁２６と減圧弁２
７を有する最高サイクル圧ライン２８を用いて圧
縮器２９に連通させ、又、作動空間１５は、第２
の逆止弁３０と増圧弁３１及びガスタンク３２を
有する最低サイクル圧ライン３３を用いて圧縮機
２９に連通する。増圧弁３１の開は作動空間１５
のガス圧を上げ機関出力を増大させる。減圧弁２
７の開は、作動空間１５のガス圧を下げ機関出力
を低下させる。 The working space 15 includes a first check valve 26 and a pressure reducing valve 2.
7 is used to communicate with the compressor 29, and the working space 15 is connected to the second
A minimum cycle pressure line 33 having a check valve 30 , a pressure increase valve 31 and a gas tank 32 is used to communicate with the compressor 29 . The opening of the pressure increase valve 31 is the working space 15
increases the gas pressure of the engine and increases the engine output. Pressure reducing valve 2
Opening 7 lowers the gas pressure in the working space 15 and lowers the engine output.
中間室２２の下部を、第３の逆止弁３４を介し
てオイル分離器３５の内部に連通させ、中間室２
２からオイル分離器３５内部へのガスの流れを可
能にする。オイル分離器３５の内部を、回路３６
を介して増圧弁３１の下流側に接続させ、該回路
３６を第４の逆止弁３７を介して中間室２２の上
部側に接続する。第４の逆止弁３７は増圧弁３１
の下流側の圧を中間室２２に供給する。３８はオ
イルフイルタである。 The lower part of the intermediate chamber 22 is communicated with the inside of the oil separator 35 via the third check valve 34, so that the lower part of the intermediate chamber 22
2 into the interior of the oil separator 35. The inside of the oil separator 35 is connected to the circuit 36
The circuit 36 is connected to the upper side of the intermediate chamber 22 via a fourth check valve 37. The fourth check valve 37 is the pressure increase valve 31
The pressure on the downstream side of is supplied to the intermediate chamber 22. 38 is an oil filter.
オイル室２４はオイル分離器３５内のオイル貯
りと連通し、オイル室２４内に常時オイルを供給
する。 The oil chamber 24 communicates with an oil reservoir in an oil separator 35, and oil is constantly supplied into the oil chamber 24.
増圧弁３１の開による作動ガスの増圧は、回路
３６及び第４の逆止弁３７を介して中間室２２に
伝達され、ガスシール２１の両側での差圧を小さ
くし、ガスシール２１の負担を小さくしシール性
を高める。減圧弁２７の開による作動ガスの減圧
は、第３の逆止弁３４を介して中間室２２の圧を
減少させることになるので、ガスシール２１の両
側の差圧を小さくする。 The increased pressure of the working gas due to the opening of the pressure increase valve 31 is transmitted to the intermediate chamber 22 via the circuit 36 and the fourth check valve 37, reducing the differential pressure on both sides of the gas seal 21, and increasing the pressure of the gas seal 21. Reduces burden and improves sealing performance. Reducing the pressure of the working gas by opening the pressure reducing valve 27 reduces the pressure in the intermediate chamber 22 via the third check valve 34, thereby reducing the differential pressure on both sides of the gas seal 21.
中間室２２からオイル室２４を介してオイル分
離器３５の内部に流入するガス通路はなく、オイ
ルスクレーパ２３を介して中間室２２に入つたオ
イルは、逆止弁３４を介して（中間室の圧が高い
時）オイル分離器３５内に戻り、作動空間１５へ
入ることはない。これは、オイルシール２１のシ
ール面にガス混入のオイルを供給させず、ガス洩
れを防止できる。 There is no gas passage that flows from the intermediate chamber 22 into the oil separator 35 via the oil chamber 24, and the oil that enters the intermediate chamber 22 via the oil scraper 23 passes through the check valve 34 ( (when the pressure is high) it returns to the oil separator 35 and does not enter the working space 15. This prevents gas-containing oil from being supplied to the sealing surface of the oil seal 21, thereby preventing gas leakage.
（効果）
本発明は、急な機関出力の増減時にも、中間室
のガス圧を作動空間のガス圧に追従できるので、
ガスシールにかゝる負担は小さく、ガスシールを
介してのガス洩れは少ない。よつて、機関出力の
安定が得られるし、ガスシールの耐久性を向上さ
せ得る。さらに、オイル室へのガスの洩れは、中
間室の圧とオイル室の圧とがオイル分離器の内部
で釣合うので、ほとんどなく、オイルシールとガ
スの接触がなく、オイルシールの耐久性を向上さ
せる。(Effects) The present invention allows the gas pressure in the intermediate chamber to follow the gas pressure in the working space even when the engine output suddenly increases or decreases.
The burden placed on the gas seal is small, and there is little gas leakage through the gas seal. Therefore, it is possible to stabilize the engine output and improve the durability of the gas seal. Furthermore, there is almost no gas leaking into the oil chamber because the pressure in the intermediate chamber and the pressure in the oil chamber are balanced inside the oil separator, and there is no contact between the oil seal and gas, which increases the durability of the oil seal. Improve.
第１図は本発明の一例を示す説明図、第２図は
従来例を示す断面図である。
図中：１５……作動空間、１６……作動ピスト
ン、１９……ロツド、２０中間部材、２１……ガ
スシール、２２……中間室、２３……オイルスク
レーパ、２４……オイル室、２５……オイルシー
ル、２７……減圧弁、２８……最高サイクル圧ラ
イン、２９……圧縮器、３１……増圧弁、３３…
…最低サイクル圧ライン、３５……オイル分離
器。
FIG. 1 is an explanatory diagram showing an example of the present invention, and FIG. 2 is a sectional view showing a conventional example. In the figure: 15... working space, 16... working piston, 19... rod, 20 intermediate member, 21... gas seal, 22... intermediate chamber, 23... oil scraper, 24... oil chamber, 25... ... Oil seal, 27 ... Pressure reducing valve, 28 ... Maximum cycle pressure line, 29 ... Compressor, 31 ... Pressure increase valve, 33 ...
...Minimum cycle pressure line, 35...Oil separator.
Claims (1)
有する最高サイクル圧ラインにより作動空間に連
通させ且つ該圧縮機を増圧弁と第２の逆止弁を有
する最低サイクル圧ラインにより前記作動空間に
連通させるスターリング機関に、前記作動空間を
作る作動ピストンと出力取出機機構とを連結する
ロツドまわりに中間部材を用いて配される軸封装
置において、該軸封装置が前記作動空間側から前
記中間部材に順次配されるガスシール、中間室、
オイルスクレーパ、オイル室、オイルシールを有
し、前記オイル室をオイル分離室に連通し、前記
中間室を前記オイル分離室へのみ開とする第３の
逆止弁を介して前記オイル分離室に連通させ且つ
前記中間室を該中間室側へのみ開となる第４の逆
止弁を介して前記増圧弁と前記第２の逆止弁との
間の前記最低圧サイクル圧ラインに連通させるこ
とを特徴とするスターリング機関の軸封装置。1. A working gas compressor is communicated with the working space through a highest cycle pressure line having a pressure reducing valve and a first check valve, and the compressor is connected to the working space by a lowest cycle pressure line having a pressure increasing valve and a second check valve. In a shaft sealing device that is disposed using an intermediate member around a rod that connects a working piston that creates the working space and an output take-out mechanism in a Stirling engine that communicates with the working space, the shaft sealing device is located on the working space side. a gas seal, an intermediate chamber, which are sequentially arranged from the intermediate member to the intermediate member;
It has an oil scraper, an oil chamber, and an oil seal, and communicates the oil chamber with an oil separation chamber, and connects the intermediate chamber to the oil separation chamber via a third check valve that opens only to the oil separation chamber. and communicating the intermediate chamber with the lowest pressure cycle pressure line between the pressure increase valve and the second check valve via a fourth check valve that opens only to the intermediate chamber side. A shaft sealing device for a Stirling engine featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5857786A JPS62214259A (en) | 1986-03-17 | 1986-03-17 | Shaft seal device for stirling engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5857786A JPS62214259A (en) | 1986-03-17 | 1986-03-17 | Shaft seal device for stirling engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62214259A JPS62214259A (en) | 1987-09-21 |
| JPH0362899B2 true JPH0362899B2 (en) | 1991-09-27 |
Family
ID=13088299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5857786A Granted JPS62214259A (en) | 1986-03-17 | 1986-03-17 | Shaft seal device for stirling engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62214259A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0354349A (en) * | 1989-07-21 | 1991-03-08 | Aisin Seiki Co Ltd | Rod seal device for sterling engine |
| US8534063B2 (en) * | 2009-02-11 | 2013-09-17 | Stirling Biopower, Inc. | Control valve for a stirling engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6097349U (en) * | 1983-12-07 | 1985-07-03 | アイシン精機株式会社 | Oil separator for Stirling engine sealing device |
| JPS60159859U (en) * | 1984-03-31 | 1985-10-24 | アイシン精機株式会社 | Stirling engine rod seal |
-
1986
- 1986-03-17 JP JP5857786A patent/JPS62214259A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62214259A (en) | 1987-09-21 |
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