JPS6226604Y2 - - Google Patents
Info
- Publication number
- JPS6226604Y2 JPS6226604Y2 JP16192781U JP16192781U JPS6226604Y2 JP S6226604 Y2 JPS6226604 Y2 JP S6226604Y2 JP 16192781 U JP16192781 U JP 16192781U JP 16192781 U JP16192781 U JP 16192781U JP S6226604 Y2 JPS6226604 Y2 JP S6226604Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- pressure
- compression chamber
- valve
- base body
- 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
Links
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000005338 heat storage Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【考案の詳細な説明】
この考案は、スターリング機関用ピストンに関
し、特に詳述すれば、一方向弁を備えたスターリ
ング機関用ピストンに関する。[Detailed Description of the Invention] This invention relates to a piston for a Stirling engine, and more particularly to a piston for a Stirling engine equipped with a one-way valve.
スターリング機関は、シリンダ内にピストンに
より区画された膨脹室と圧縮室とを、ヒータ、蓄
熱器およびクーラを介して連通させて閉回路を作
り、該閉回路中のヘリウム、水ソ、チツソ或いは
それらの混合ガスを、高温部となる膨脹室と低温
部となる圧縮室との間を往復させ外部に機械的仕
事を取出している。このスターリング機関のピス
トンは、略20−150気圧の高圧にさらされること
から、耐圧構造とする必要がある。ピストンの耐
圧構造として、厚肉或いは中実のピストンが考え
られるが、これは質量を増し、慣性力が大となる
ことから機械損失の面から好ましくなく、このた
め、基体に薄肉の中空ドーム体を固定し、中空ド
ーム体内に高圧ガスを封入したピストンが提案さ
れている。このピストンは、しかし、基体とドー
ム体との固定部分から経時的にガス漏れが生じ、
内部圧が低下し、ピストンのドーム体部分から破
損する事故を招いている。 In a Stirling engine, an expansion chamber and a compression chamber, which are divided by a piston in a cylinder, are communicated via a heater, a heat storage device, and a cooler to create a closed circuit. The mixed gas is reciprocated between the expansion chamber, which is a high-temperature part, and the compression chamber, which is a low-temperature part, to extract mechanical work to the outside. The pistons of this Stirling engine are exposed to high pressures of approximately 20 to 150 atmospheres, so they must have a pressure-resistant structure. As a pressure-resistant structure for the piston, a thick-walled or solid piston can be considered, but this increases mass and inertia, which is undesirable from the viewpoint of mechanical loss. A piston has been proposed in which the piston is fixed and high-pressure gas is sealed inside the hollow dome. However, over time, gas leakage occurred in this piston from the fixed part between the base and the dome body.
The internal pressure drops, leading to accidents where the piston's dome body breaks.
この考案は、前述したピストンの改良を目的と
し、基本的には、ピストンの内部をほぼ一定圧に
維持させるために、本考案は、ヒータ、蓄熱器お
よびクーラにより連通する膨脹室と圧縮室をシリ
ンダ内に区画させるスターリング機関用ピストン
において、前記ピストンが基体と、該基体に固定
された中空ドーム体と、前記基体に組込まれ且つ
弁体及びこの弁体を押圧するスプリングを有する
一方向弁を備え、該一方向弁の開弁圧を最高ガス
圧と最低ガス圧との間に設定させていることを特
徴とするスターリング機関用ピストンを提供す
る。 The purpose of this invention is to improve the above-mentioned piston. Basically, in order to maintain an almost constant pressure inside the piston, this invention has an expansion chamber and a compression chamber that communicate with each other through a heater, a heat storage device, and a cooler. In a piston for a Stirling engine that is partitioned into a cylinder, the piston includes a one-way valve having a base body, a hollow dome body fixed to the base body, a valve body incorporated in the base body, and a spring that presses the valve body. A piston for a Stirling engine is provided, characterized in that the opening pressure of the one-way valve is set between a maximum gas pressure and a minimum gas pressure.
この考案の実施例を添付図面を参照して説明す
る。 An embodiment of this invention will be described with reference to the accompanying drawings.
スターリング機関１のシリンダ２内にデイスプ
レーサピストン３を配し、膨脹室４と圧縮室５と
をシリンダ２内に区画させる。圧縮室側にパワー
ピストン６を配す。膨脹室４は、ヒータ７、蓄熱
器８およびクーラ９を介して圧縮室５と連通す
る。膨脹室４と圧縮室５を結ぶ閉回路中に、ヘリ
ウム、水ソ、チツソ或いはそれらの混合ガスから
なる作動ガスを充填する。デイスプレーサピスト
ン３およびパワーピストン６を、図示しない駆動
機構に連結する。作動ガスは、膨脹室４と圧縮室
５との間を往復し、ヒータ７により約600〜700℃
に加熱された作動ガスが膨脹室４に入り、又、ク
ーラ９により約100℃に冷却された作動ガスが圧
縮室５に入る。１０は、圧縮機を示し、又、１１
は、高圧作動ガスタンクを示す。タンク１１は制
御弁１２，１３および一方向弁１４，１５を介し
て、圧縮室５に通じ、出力を高める時は、制御弁
１３を開にし、高圧タンク１１から圧縮室５へと
作動ガスを供給し、出力を下げる時は、制御弁１
２を開にして、圧縮室５から圧縮機１０により作
動ガスを回収する。このような機関の出力増減に
よる閉回路中の作動ガスの圧変化を第２図に示
す。ａで示される区間は、最低出力時を示し、ｂ
で示される区間は最高出力時の状態を表す。第２
図中のP1は閉回路中に生じる最高圧力を、又、P2
は最低圧力を示す。 A displacer piston 3 is disposed within a cylinder 2 of a Stirling engine 1, and an expansion chamber 4 and a compression chamber 5 are partitioned within the cylinder 2. A power piston 6 is arranged on the compression chamber side. The expansion chamber 4 communicates with the compression chamber 5 via a heater 7, a heat storage device 8, and a cooler 9. The closed circuit connecting the expansion chamber 4 and the compression chamber 5 is filled with a working gas consisting of helium, water, nitrogen, or a mixture thereof. The displacer piston 3 and the power piston 6 are connected to a drive mechanism (not shown). The working gas reciprocates between the expansion chamber 4 and the compression chamber 5, and is heated to approximately 600 to 700°C by the heater 7.
The working gas heated to about 100° C. enters the expansion chamber 4, and the working gas cooled to about 100° C. by the cooler 9 enters the compression chamber 5. 10 indicates a compressor, and 11
indicates a high pressure working gas tank. The tank 11 communicates with the compression chamber 5 via control valves 12 and 13 and one-way valves 14 and 15. When increasing the output, the control valve 13 is opened and the working gas is passed from the high-pressure tank 11 to the compression chamber 5. When supplying and reducing output, control valve 1
2 is opened, and working gas is recovered from the compression chamber 5 by the compressor 10. FIG. 2 shows pressure changes in the working gas in the closed circuit due to increases and decreases in engine output. The section indicated by a indicates the lowest output time, and b
The section indicated by indicates the state at maximum output. Second
P 1 in the figure is the maximum pressure generated in a closed circuit, and P 2
indicates the lowest pressure.
第３図を参照して、この考案のデイスプレーサ
ピストン３の構成を説明する。デイスプレーサピ
ストン３は、その外周面にシール材１７を備える
基体１６と、該基体１６に固着された中空のドー
ム体１８と、基体１６に組込まれた一方向弁１９
とを有する。一方向弁１９は、ボールの如き弁体
及びこの弁体を押圧するスプリング２１を有し、
圧縮室５側からドーム体１８の中空室２０に作動
ガスを流入させる。この一方向弁１９の開弁圧力
は、最高圧力P1と最低圧力P2との間の値P3とす
る。この開弁圧力はスプリング２１の付勢力を調
整させることで得られる。この構成によれば、操
作中の最高ガス圧P1と最低ガス圧P2のほゞ中間値
である（P1−P2）／２の圧を、ピストン内部に保
持せしめるように一方向弁のスプリング荷重を設
定する。云い換えれば、スプリング２１の附勢力
と中空室２０内のガス圧との和が、弁体に作用す
る機関操作中の最高ガス圧と釣合うことになる。 The structure of the displacer piston 3 of this invention will be explained with reference to FIG. The displacer piston 3 includes a base body 16 having a sealing material 17 on its outer peripheral surface, a hollow dome body 18 fixed to the base body 16, and a one-way valve 19 incorporated in the base body 16.
and has. The one-way valve 19 has a valve body such as a ball and a spring 21 that presses the valve body,
Working gas is caused to flow into the hollow chamber 20 of the dome body 18 from the compression chamber 5 side. The opening pressure of this one-way valve 19 is set to a value P3 between the highest pressure P1 and the lowest pressure P2 . This valve opening pressure can be obtained by adjusting the urging force of the spring 21. According to this configuration, the one-way valve is configured to maintain a pressure of (P 1 - P 2 )/2, which is approximately an intermediate value between the maximum gas pressure P 1 and the minimum gas pressure P 2 during operation, inside the piston. Set the spring load. In other words, the sum of the biasing force of the spring 21 and the gas pressure within the hollow chamber 20 balances the maximum gas pressure acting on the valve body during engine operation.
以上から明らかなように、ピストンに一方向弁
を設け、ピストン内部の圧を常に一定値以上に維
持させているので、ドーム体の肉厚を薄くし、慣
性力を抑え、ピストンの円滑な往復動が可能とな
る。さらに、ピストン内部に封入された作動ガス
は、密閉状態となり、機関の出力制御を遅くさせ
ることなく、たとえ、ピストン内部の圧が漏洩し
ても、機関の運転により、再び、作動ガスをピス
トン内部に封入させ得るので、ピストンの耐圧性
を低下させることはない。 As is clear from the above, the piston is equipped with a one-way valve and the pressure inside the piston is always maintained above a certain value, so the thickness of the dome body can be reduced, the inertia force can be suppressed, and the piston can reciprocate smoothly. movement becomes possible. Furthermore, the working gas sealed inside the piston is in a sealed state, and even if the pressure inside the piston leaks, the working gas will be returned to the inside of the piston by engine operation without slowing down engine output control. The pressure resistance of the piston will not be reduced.
この考案の一例として、デイスプレーサピスト
ンを開示したが、ダブルアクテイングタイプのピ
ストンにも、この考案が適用されることは自明な
ことである。そして、出力を死容積で制御するス
ターリング機関にも、この考案は適用できる。 Although a displacer piston has been disclosed as an example of this invention, it is obvious that this invention can also be applied to a double acting type piston. This idea can also be applied to Stirling engines whose output is controlled by dead volume.
第１図はスターリング機関の説明図、第２図は
作動ガスの圧力変化を示す説明図、および第３図
はデイスプレーサピストンの断面図である。
図中：１……スターリング機関、２……シリン
ダ、３……ピストン、４……膨脹室、５……圧縮
室、７……ヒータ、８……蓄熱器、９……クー
ラ、１６……基体、１８……ドーム体、１９……
一方向弁。
FIG. 1 is an explanatory diagram of a Stirling engine, FIG. 2 is an explanatory diagram showing changes in pressure of working gas, and FIG. 3 is a sectional view of a displacer piston. In the diagram: 1... Stirling engine, 2... cylinder, 3... piston, 4... expansion chamber, 5... compression chamber, 7... heater, 8... heat storage device, 9... cooler, 16... Base body, 18... Dome body, 19...
One way valve.
Claims (1)
脹室と圧縮室をシリンダ内に区画させるスターリ
ング機関用ピストンにおいて、前記ピストンが基
体と、該基体に固定された中空ドーム体と、前記
基体に組込まれ且つ弁体及びこの弁体を押圧する
スプリングを有する一方向弁を備え、該一方向弁
の開弁圧を最高ガス圧と最低ガス圧との間に設定
させていることを特徴とするスターリング機関用
ピストン。 A piston for a Stirling engine in which an expansion chamber and a compression chamber, which are communicated with each other by a heater, a heat storage device, and a cooler, are partitioned into a cylinder, the piston having a base body, a hollow dome body fixed to the base body, and a valve incorporated in the base body. A piston for a Stirling engine, characterized in that the one-way valve has a body and a spring that presses the valve body, and the opening pressure of the one-way valve is set between a maximum gas pressure and a minimum gas pressure. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16192781U JPS5866144U (en) | 1981-10-30 | 1981-10-30 | Stirling engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16192781U JPS5866144U (en) | 1981-10-30 | 1981-10-30 | Stirling engine piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5866144U JPS5866144U (en) | 1983-05-06 |
| JPS6226604Y2 true JPS6226604Y2 (en) | 1987-07-08 |
Family
ID=29954264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16192781U Granted JPS5866144U (en) | 1981-10-30 | 1981-10-30 | Stirling engine piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5866144U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896148A (en) * | 1981-12-02 | 1983-06-08 | Aisin Seiki Co Ltd | Piston of gas engine |
| CN114127403A (en) * | 2019-05-21 | 2022-03-01 | 通用电气公司 | Energy conversion apparatus and control system |
-
1981
- 1981-10-30 JP JP16192781U patent/JPS5866144U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5866144U (en) | 1983-05-06 |
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