JPH0718382B2 - Rod seal of staring engine - Google Patents

Rod seal of staring engine

Info

Publication number
JPH0718382B2
JPH0718382B2 JP61005688A JP568886A JPH0718382B2 JP H0718382 B2 JPH0718382 B2 JP H0718382B2 JP 61005688 A JP61005688 A JP 61005688A JP 568886 A JP568886 A JP 568886A JP H0718382 B2 JPH0718382 B2 JP H0718382B2
Authority
JP
Japan
Prior art keywords
rod
pressure
oil
working
seal ring
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 - Fee Related
Application number
JP61005688A
Other languages
Japanese (ja)
Other versions
JPS62165563A (en
Inventor
大作 小林
常作 板羽
浩一郎 笠原
豊 百瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riken Corp
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Riken Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd, Riken Corp filed Critical Aisin Seiki Co Ltd
Priority to JP61005688A priority Critical patent/JPH0718382B2/en
Publication of JPS62165563A publication Critical patent/JPS62165563A/en
Publication of JPH0718382B2 publication Critical patent/JPH0718382B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F02G1/053—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 Devices (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (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ロツドシールに関する。
スターリング機関では、シリンダ内の作動ピストンの動
きを、たとえば、クランク機構の如き駆動部に、両者の
結合されたロツドを介して、伝達させるが、本発明はこ
のロツドまわりのシールを有効に行なうのに利用され
る。TECHNICAL FIELD The present invention relates to a rod seal for a Stirling engine.
In the Stirling engine, the movement of the working piston in the cylinder is transmitted to a driving unit such as a crank mechanism through a rod connected to the driving unit. However, the present invention effectively seals around the rod. Used for.

（従来の技術） スターリング機関のロツドまわりのシールを効果的に成
し、シリンダ内を往復動するピストンによつて区画され
る作動空間内の作動ガス（たとえば、ヘリウムガス）の
ロツドまわりからの洩れを防止させる技術は、比較的新
しいものであるから、本出願人が実願昭60−23260号と
して出願した内容のものを第３図として例示し、この第
３図に基づいて、その基本的考えを説明する。(Prior Art) Leakage around the rod of a working gas (for example, helium gas) in a working space that effectively seals around the rod of a Stirling engine and is partitioned by a piston that reciprocates in a cylinder. Since the technology for preventing the above is relatively new, the content of the application filed by the present applicant as the Japanese Utility Model Application No. 60-23260 is illustrated in FIG. 3, and based on this FIG. Explain the idea.

スターリング機関のシリンダ１内に作動ピストン２を配
し、低温部となる圧縮室（作動空間）３を作るが、この
圧縮室３は図示しないが、隣り合うシリンダの高温部と
なる膨脹室と、クーラ、蓄熱器およびヒータを介して連
結され、作動ガスを、圧縮室３と膨脹室との間を往復さ
せる間に、等温圧縮、等容変化、等温膨脹および等容変
化をさせ、作動ピストン２を往復動させる。この作動ピ
ストン２の往復動は、ロツド４を介して、駆動部５によ
り外部に機械的仕事として取り出される。A working piston 2 is arranged in a cylinder 1 of a Stirling engine to form a compression chamber (working space) 3 which is a low temperature part. The working piston 2 is connected via a cooler, a regenerator, and a heater, and while the working gas reciprocates between the compression chamber 3 and the expansion chamber, isotherm compression, isotherm change, isotherm expansion and isotherm change are performed, and the working piston 2 To reciprocate. The reciprocating motion of the working piston 2 is taken out as mechanical work to the outside by the drive unit 5 via the rod 4.

圧縮室３からロツド４に沿つて作動ガスが洩れ、平均作
動ガス圧の低下による出力低下を防止するために、圧縮
室３から駆動部５側へと、順次、オイルスクレーパ６、
高圧油封室７、オイルシールリング８、低圧油封室９お
よびオイルスクレーパ10を配す。高圧油封室７は、タン
ク12および逆止弁11を介して圧縮室３に連結され、又、
低圧油封室９がタンク12と連通する。第３図に示す例で
は、低圧油封室９の油はロツド４の往復動に伴い掻き上
げられて高圧油封室７に容易に戻り、余剰の油はタンク
12内に貯えられる。この際、タンク12は、高圧油封室７
に入つた作動ガスをその上部に貯え、高圧作動ガスを圧
縮室３に還流させることで、作動ガスをその最低圧に維
持する。In order to prevent the working gas from leaking from the compression chamber 3 along the rod 4 and decreasing the output due to the decrease in the average working gas pressure, the oil scraper 6, from the compression chamber 3 to the drive unit 5 side,
A high pressure oil seal chamber 7, an oil seal ring 8, a low pressure oil seal chamber 9 and an oil scraper 10 are arranged. The high-pressure oil seal chamber 7 is connected to the compression chamber 3 via a tank 12 and a check valve 11, and
The low-pressure oil seal chamber 9 communicates with the tank 12. In the example shown in FIG. 3, the oil in the low-pressure oil seal chamber 9 is scraped up as the rod 4 reciprocates and easily returns to the high-pressure oil seal chamber 7, and excess oil is stored in the tank.
Stored within 12. At this time, the tank 12 is the high pressure oil seal chamber 7
The working gas that has entered is stored in the upper part thereof, and the high-pressure working gas is returned to the compression chamber 3, so that the working gas is maintained at its minimum pressure.

（本発明が解決しようとする問題点） 第３図に示す例では、高圧油封室７の油圧がオイルシー
ルリング８のリツプ13に作用して、リツプ13のロツド４
への接触圧を確保しているが、タンク12内の作動ガスの
圧はその最低サイクル圧に維持されていることから、こ
の最低サイクル圧を、たとえば、20kg/cm2から10kg/cm2
に下げた場合、低圧油封室９の油圧も当然下がる。この
ため、オイルシールリング８のリツプ13に作用する油圧
が小さく、このリツプ13とロツド４との接触圧が下が
る。云い換えれば、オイルシーリング８の利用は、最低
サイクル圧を制限することになり、オイルシールリング
８に適する圧以下の最低サイクル圧が利用できないこと
になる。(Problems to be Solved by the Present Invention) In the example shown in FIG. 3, the oil pressure in the high-pressure oil seal chamber 7 acts on the lip 13 of the oil seal ring 8 to cause the rod 4 of the lip 13 to move.
Although the contact pressure is maintained, the pressure of the working gas in the tank 12 is maintained at the minimum cycle pressure, so this minimum cycle pressure is set to, for example, 20 kg / cm 2 to 10 kg / cm 2.
When the pressure is lowered to, the oil pressure in the low pressure oil seal chamber 9 naturally decreases. Therefore, the oil pressure acting on the lip 13 of the oil seal ring 8 is small, and the contact pressure between the lip 13 and the rod 4 is reduced. In other words, the use of the oil sealing 8 limits the minimum cycle pressure, and the minimum cycle pressure below the pressure suitable for the oil sealing ring 8 cannot be used.

本発明は、前述した問題点を解決するために提案される
ものである。The present invention is proposed to solve the above-mentioned problems.

（問題点を解決するための手段） 本発明は、前述した問題点を解決するために、基本的に
は、第３図のオイルシールリングに代えて、環状の本体
のロツドに接する対のリツプを有するシールリングを用
い、本体の外周面に作動ガスを作用させる技術的手段を
用いる。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention basically replaces the oil seal ring of FIG. 3 with a pair of lip members contacting the rod of the annular body. The seal ring having the above is used, and the technical means for causing the working gas to act on the outer peripheral surface of the main body is used.

（作用） 本発明によれば、作動ガス圧がシールリングの外周面に
直接作用するので、サイクル圧が低くても、そのリツプ
とロツドの接触圧を充分に保ち、油封室の油洩れ、及び
油と共に作動ガスが洩れることはない。(Operation) According to the present invention, since the working gas pressure acts directly on the outer peripheral surface of the seal ring, even if the cycle pressure is low, the contact pressure between the lip and the rod is sufficiently maintained to prevent oil leakage in the oil seal chamber, and The working gas does not leak with the oil.

（実施例） 第１図及び第２図を参照する。尚、第３図と同構成のも
のは、同一符号を記して、その説明を省略する。(Example) Refer to FIG. 1 and FIG. The same components as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.

作動空間となる圧縮室３と駆動部５とを結合するロツド
４まわりに、圧縮室３側から駆動部５側へと、順次、ガ
スリング14、オイルスクレーパ15、油封室16、シールリ
ング17を配設する。油封室16を、逆止弁18を介して圧縮
室３に連通させ、油封室16を作動ガスの最低サイクル圧
に相当する圧に保ち、オイルスクレーパ15を介して油封
室16に入つた高圧作動ガスを圧縮室３に戻す。A gas ring 14, an oil scraper 15, an oil seal chamber 16, and a seal ring 17 are sequentially installed around the rod 4 that connects the compression chamber 3 serving as the working space and the drive unit 5 from the compression chamber 3 side to the drive unit 5 side. Arrange. The oil seal chamber 16 is communicated with the compression chamber 3 via the check valve 18, the oil seal chamber 16 is maintained at a pressure equivalent to the minimum cycle pressure of the working gas, and the high pressure operation enters the oil seal chamber 16 via the oil scraper 15. The gas is returned to the compression chamber 3.

シールリング17は、環状の本体19と、該本体19の内周面
から半径方向内側に延出し且つロツド４の外周面に接す
る対の離間したリツプ20を有する。該シールリング17
は、中間部材21に対のＯ−リング22を介して収容され
る。中間部材21の内周面とシールリング17の外周面との
間には環状の隙間23を作る。隙間23を、ガスリング14と
オイルスクレーパ15との間の空間24に連通させる。この
ため、空間24には、圧縮室３の作動ガスの平均圧が、ガ
スリング14を介して、常時導入されているので、シール
リング17の外周面には、平均作動ガス圧が、常時作用
し、シールリング17をロツド方向に押圧することにな
る。この結果、シールリング17のリツプ20が、ロツド４
への必要な接触圧を維持しながら、ロツド４と接し、油
洩れを作ることはない。The seal ring 17 has an annular main body 19 and a pair of spaced apart lips 20 extending radially inward from the inner peripheral surface of the main body 19 and contacting the outer peripheral surface of the rod 4. The seal ring 17
Are accommodated in the intermediate member 21 via a pair of O-rings 22. An annular gap 23 is formed between the inner peripheral surface of the intermediate member 21 and the outer peripheral surface of the seal ring 17. The gap 23 is communicated with the space 24 between the gas ring 14 and the oil scraper 15. Therefore, since the average pressure of the working gas in the compression chamber 3 is constantly introduced into the space 24 via the gas ring 14, the average working gas pressure always acts on the outer peripheral surface of the seal ring 17. Then, the seal ring 17 is pressed in the rod direction. As a result, the lip 20 of the seal ring 17 is replaced by the rod 4
While maintaining the necessary contact pressure to the rod 4, it will not come into contact with the rod 4 and cause oil leakage.

Ｏ−リング22は、隙間23からのガス洩れを防止するのに
有効である。The O-ring 22 is effective in preventing gas leakage from the gap 23.

（効果） 本発明によれば、シールリングの外周面に、常時、作動
ガスの平均サイクル圧を作用させるので、均一なシール
力を持続させ得る。(Effects) According to the present invention, the average cycle pressure of the working gas is constantly applied to the outer peripheral surface of the seal ring, so that a uniform sealing force can be maintained.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の一例を示す断面図、第２図は本発明の
一例に用いられるシールリングの断面図、および第３図
は従来例を示す断面図である。 図中:1……シリンダ、２……作動ピストン、３……圧縮
室、４……ロツド、５……駆動部、14……ガスシール、
15……オイルスクレーパ、16……油封室、17……シール
リング、19……本体、20……リツプ。FIG. 1 is a sectional view showing an example of the present invention, FIG. 2 is a sectional view of a seal ring used in the example of the present invention, and FIG. 3 is a sectional view showing a conventional example. In the figure: 1 ... Cylinder, 2 ... Working piston, 3 ... Compression chamber, 4 ... Rod, 5 ... Drive part, 14 ... Gas seal,
15 …… Oil scraper, 16 …… Oil seal chamber, 17 …… Seal ring, 19 …… Main body, 20 …… Rip.

フロントページの続き (72)発明者 百瀬 豊 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社内 (56)参考文献 実開 昭60−159859（ＪＰ，Ｕ) 実開 昭47−22340（ＪＰ，Ｕ) 実開 昭56−115063（ＪＰ，Ｕ) 実開 昭59−22962（ＪＰ，Ｕ)Front page continuation (72) Inventor Yutaka Momose 2-1-1 Asahi-cho, Kariya city, Aichi Aisin Seiki Co., Ltd. (56) References: 60-159859 (JP, U) 47-22340, actual JP, U) Actual Open Sho 56-115063 (JP, U) Actual Open Sho 59-22962 (JP, U)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】シリンダ内の作動ピストンによつて作られ
る作動空間と出力取出し部となる駆動部との間であつて
前記作動ピストンから前記駆動部へと延出するロツドま
わりに、前記作動空間側から順次、ガスリング、オイル
スクレーパ、油封室及びシールリングとを配し、前記シ
ールリングが環状の本体と前記ロツドに接する対の離間
したリツプとを有し、前記本体の外周面周りの隙間を前
記ガスリングと前記オイルスクレーパとの間の空間に連
通させたことを特徴とするスターリング機関のロツドシ
ール。1. A working space between a working space formed by a working piston in a cylinder and a drive unit serving as an output take-out unit, and around the rod extending from the working piston to the drive unit. A gas ring, an oil scraper, an oil seal chamber, and a seal ring are sequentially arranged from the side, and the seal ring has an annular main body and a pair of spaced apart lips contacting the rod, and a gap around the outer peripheral surface of the main body. A rod seal for a Stirling engine, characterized in that a space between the gas ring and the oil scraper is communicated.
JP61005688A 1986-01-14 1986-01-14 Rod seal of staring engine Expired - Fee Related JPH0718382B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61005688A JPH0718382B2 (en) 1986-01-14 1986-01-14 Rod seal of staring engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61005688A JPH0718382B2 (en) 1986-01-14 1986-01-14 Rod seal of staring engine

Publications (2)

Publication Number Publication Date
JPS62165563A JPS62165563A (en) 1987-07-22
JPH0718382B2 true JPH0718382B2 (en) 1995-03-06

Family

ID=11618038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61005688A Expired - Fee Related JPH0718382B2 (en) 1986-01-14 1986-01-14 Rod seal of staring engine

Country Status (1)

Country Link
JP (1) JPH0718382B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023070561A (en) * 2021-11-09 2023-05-19 ヤンマーホールディングス株式会社 stirling engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4722340U (en) * 1971-03-25 1972-11-13
JPS60159859U (en) * 1984-03-31 1985-10-24 アイシン精機株式会社 Stirling engine rod seal

Also Published As

Publication number Publication date
JPS62165563A (en) 1987-07-22

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