WO2013122142A1 - Stirling engine regenerator component and regenerator using same - Google Patents
Stirling engine regenerator component and regenerator using same Download PDFInfo
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- WO2013122142A1 WO2013122142A1 PCT/JP2013/053526 JP2013053526W WO2013122142A1 WO 2013122142 A1 WO2013122142 A1 WO 2013122142A1 JP 2013053526 W JP2013053526 W JP 2013053526W WO 2013122142 A1 WO2013122142 A1 WO 2013122142A1
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- regenerator
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- displacer
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- 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
- F02G1/057—Regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
- F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
Definitions
- the present invention relates to a regenerator component used for improving the thermal efficiency of a Stirling engine and a regenerator using the same.
- the free piston Stirling engine 50 normally includes a cylinder 54 provided with a regenerator (or stack) 53 so that a temperature gradient is generated between the heating unit 51 and the cooling unit 52, and the inside of the cylinder 54.
- the displacer 57 that is slidably installed in the cylinder 54 and divides the inside of the cylinder 54 into an expansion space 55 and a compression space 56, a power piston 58 that is operated by pressure fluctuation generated by the displacer 57, and the displacer 57 and the power piston 58
- elastic parts 60 such as springs and leaf springs for supporting each of them in a case 59.
- the free piston Stirling engine 50 uses pressure fluctuations accompanying the movement of a working fluid such as air in a heat exchanger (the heating unit 51 and the cooling unit 52), and therefore, between the displacer 57 and the power piston 58.
- a working fluid such as air in a heat exchanger (the heating unit 51 and the cooling unit 52)
- the phase of the displacer 57 and the power piston 58 is adjusted by an air spring without the crank mechanism, and the reciprocating motion of the displacer 57 and the power piston 58 is realized.
- the regenerator 53 is configured in a cylindrical shape with laminated metal nets, spring meshes, and the like (see, for example, Patent Document 1), and stores the amount of heat of the working fluid when the working fluid flows from the heating unit 51 to the cooling unit 52. By reusing the amount of heat stored when the working fluid flows from the cooling unit 52 to the heating unit 51, the heat reciprocating in the heat exchanger is effectively used to achieve high thermal efficiency.
- the regenerator 53 needs to have an appropriate gap amount according to the amount of flowing working fluid.
- the regenerator 53 is formed of a metal mesh
- distortion of the metal mesh or unraveling of the strands at the end occurs during forming, and not only the handling property at the time of lamination deteriorates, but also the end of the end.
- a portion where the element wire comes into contact with the displacer 57 vertically is generated, a large frictional resistance is generated at the contact portion.
- the material of the spring mesh is soft and easily deformed, the frictional resistance when contacted is small, but it is difficult to obtain an appropriate gap amount while maintaining the shape.
- an object of the present invention is a Stirling engine in which a cylindrical regenerator is disposed around a displacer, and the Stirling that has a small frictional resistance at the time of contact and can maintain an appropriate gap amount according to the amount of working fluid.
- An object of the present invention is to provide a regenerator part for an engine and a regenerator using the same.
- the present invention devised to achieve this object is a regenerator part of a Stirling engine provided with a hollow disk-shaped metal thin plate and a comb tooth portion formed along the inner edge of the metal thin plate.
- each comb tooth of the comb tooth portion is curved so as not to face the center of the metal thin plate.
- the metal thin plate is preferably provided with a step portion formed such that the outer edge side is thicker than the inner edge side.
- the present invention is a regenerator of a Stirling engine characterized in that the regenerator parts of the Stirling engine are laminated.
- the friction resistance at the time of contact is small, and a Stirling engine capable of maintaining an appropriate gap amount according to the amount of working fluid.
- a regenerator component and a regenerator using the same can be provided.
- FIG. 2 is a sectional view taken along line AA in FIG. 1.
- 1 is a schematic perspective view showing a regenerator of a Stirling engine according to the present invention. It is typical sectional drawing which shows the structure of a general free piston Stirling engine.
- the regenerator component 10 of the Stirling engine includes a hollow disk-shaped metal thin plate 11 and a comb tooth portion 12 formed along the inner edge of the metal thin plate 11. It is a thing.
- the comb teeth portion 12 is formed such that the outer edge of the thin metal plate 11 is a base portion 13 and a plurality of comb teeth 14 extend from the base portion 13 to the inner edge side of the thin metal plate 11. With the comb-tooth portion 12 having such a shape, the contact area between the working fluid and the regenerator component 10 is increased, and the thermal efficiency can be improved.
- Each comb tooth 14 is curved within the same plane as the metal thin plate 11 so as not to face the center of the metal thin plate 11. Since each comb tooth 14 has a curved shape, when the displacer 57 described in FIG. 5 comes into contact with the comb tooth portion 12, the tip of each comb tooth 14 is deformed, and the friction resistance between the displacer 57 and the displacer 57. Can be reduced. Moreover, the front end side of each comb tooth 14 is thinner than the base side so as to be deformed flexibly, and this can further reduce the frictional resistance.
- the total amount of the gaps 15 formed between the comb teeth 14, that is, the gap amount is determined by the specifications of the Stirling engine.
- the working fluid moves through the gap 15 in the heat exchanger.
- the metal thin plate 11 has a thickness of about 0.1 to 0.2 mm, and as shown in FIG. 3, a step formed by forming the outer edge side thicker than the inner edge side. It is preferable to provide the part 16.
- the step 16 is for preventing the gap 15 from being closed when the regenerator parts 10 are stacked. In other words, by providing the stepped portion 16, the stacked comb teeth 14 of one regenerator component 10 do not overlap the gap 15 of the other regenerator component 10 and block the gap 15.
- regenerator 40 in a Stirling engine in which a cylindrical regenerator is disposed around the displacer, the frictional resistance at the time of contact is small, and an appropriate gap amount corresponding to the amount of working fluid can be maintained.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Provided are a Stirling engine regenerator component having small frictional resistance during contact and capable of maintaining an appropriate gap amount corresponding to the amount of a working fluid in a Stirling engine in which a cylindrical regenerator is disposed around a displacer, and a regenerator using the same.
A Stirling engine regenerator component (10) is provided with a hollow disc-shaped metallic thin plate (11) and a comb teeth part (12) formed along the inner edge of the metallic thin plate (11). Each comb tooth (14) of the comb teeth part (12) is curved so as not to face the center of the metallic thin plate (11). The metallic thin plate (11) is provided with a step part (16) configured by forming the thickness of the outer edge side thereof thicker than the thickness of the inner edge side thereof. A Stirling engine regenerator (40) is configured by stacking the regenerator components (10).
Description
本発明は、スターリングエンジンの熱効率を向上させるために用いられる再生器用部品及びこれを用いた再生器に関するものである。
The present invention relates to a regenerator component used for improving the thermal efficiency of a Stirling engine and a regenerator using the same.
図５に示すように、フリーピストンスターリングエンジン５０は、通常、加熱部５１と冷却部５２との間に温度勾配が生じるよう再生器（又はスタック）５３を設けたシリンダ５４と、そのシリンダ５４内に摺動可能に設置されると共にシリンダ５４内を膨張空間５５と圧縮空間５６とに区画するディスプレーサ５７と、そのディスプレーサ５７が発生させる圧力変動により稼働するパワーピストン５８と、ディスプレーサ５７及びパワーピストン５８のそれぞれをケース５９内で支持するバネや板バネ等の弾性部品６０を備えている。
As shown in FIG. 5, the free piston Stirling engine 50 normally includes a cylinder 54 provided with a regenerator (or stack) 53 so that a temperature gradient is generated between the heating unit 51 and the cooling unit 52, and the inside of the cylinder 54. The displacer 57 that is slidably installed in the cylinder 54 and divides the inside of the cylinder 54 into an expansion space 55 and a compression space 56, a power piston 58 that is operated by pressure fluctuation generated by the displacer 57, and the displacer 57 and the power piston 58 These are provided with elastic parts 60 such as springs and leaf springs for supporting each of them in a case 59.
フリーピストンスターリングエンジン５０は、空気等の作動流体が熱交換器（加熱部５１や冷却部５２）内を移動することに伴う圧力変動を利用しているため、ディスプレーサ５７とパワーピストン５８との間にクランク機構を持たず、空気バネによりディスプレーサ５７及びパワーピストン５８の位相を調整し、ディスプレーサ５７とパワーピストン５８の連続した往復運動を実現している。
The free piston Stirling engine 50 uses pressure fluctuations accompanying the movement of a working fluid such as air in a heat exchanger (the heating unit 51 and the cooling unit 52), and therefore, between the displacer 57 and the power piston 58. However, the phase of the displacer 57 and the power piston 58 is adjusted by an air spring without the crank mechanism, and the reciprocating motion of the displacer 57 and the power piston 58 is realized.
再生器５３は、積層した金属網やスプリングメッシュ等で円筒型に構成されており（例えば、特許文献１参照）、作動流体が加熱部５１から冷却部５２に流れる際に作動流体の熱量を蓄え、作動流体が冷却部５２から加熱部５１に流れる際に蓄えられた熱量を再利用することで、熱交換器内を往復する熱を有効利用し、高い熱効率を実現する。
The regenerator 53 is configured in a cylindrical shape with laminated metal nets, spring meshes, and the like (see, for example, Patent Document 1), and stores the amount of heat of the working fluid when the working fluid flows from the heating unit 51 to the cooling unit 52. By reusing the amount of heat stored when the working fluid flows from the cooling unit 52 to the heating unit 51, the heat reciprocating in the heat exchanger is effectively used to achieve high thermal efficiency.
フリーピストンスターリングエンジン５０は、その特性として共振点において運転されるため、摩擦抵抗が大きいと運転することができない。
Since the free piston Stirling engine 50 is operated at a resonance point as its characteristic, it cannot be operated if the frictional resistance is large.
そのため、ディスプレーサ５７やパワーピストン５８の各部をできる限り接触しないように保持し、接触する場合にはその接触部の摩擦抵抗を小さくする必要がある。また、フリーピストンスターリングエンジン５０以外でも、ディスプレーサ５７周りに円筒型の再生器５３を配置したβ型やγ型のスターリングエンジンにおいても同様の課題が生じる。
Therefore, it is necessary to keep each part of the displacer 57 and the power piston 58 from contacting as much as possible, and to make the frictional resistance of the contact part small when contacting. In addition to the free piston Stirling engine 50, the same problem occurs in the β type and γ type Stirling engines in which the cylindrical regenerator 53 is disposed around the displacer 57.
また、作動流体が再生器５３を介して熱交換器内を移動するため、再生器５３は、流動する作動流体量に応じて適切な空隙量を有する必要がある。
Further, since the working fluid moves in the heat exchanger via the regenerator 53, the regenerator 53 needs to have an appropriate gap amount according to the amount of flowing working fluid.
しかしながら、金属網で再生器５３を構成した場合には、成形する際に金属網の歪みや端部における素線の解れ等が生じ、積層時の取り扱い性が悪くなるばかりでなく、端部の素線がディスプレーサ５７に対して垂直に接触する部分が発生するため、その接触部に大きな摩擦抵抗が生じる。また、スプリングメッシュは、素材が柔らかく変形しやすいため、接触した場合の摩擦抵抗は小さいが、形状を維持したまま適正な空隙量とすることが難しい。
However, when the regenerator 53 is formed of a metal mesh, distortion of the metal mesh or unraveling of the strands at the end occurs during forming, and not only the handling property at the time of lamination deteriorates, but also the end of the end. Since a portion where the element wire comes into contact with the displacer 57 vertically is generated, a large frictional resistance is generated at the contact portion. In addition, since the material of the spring mesh is soft and easily deformed, the frictional resistance when contacted is small, but it is difficult to obtain an appropriate gap amount while maintaining the shape.
そこで、本発明の目的は、ディスプレーサ周りに円筒型の再生器が配置されたスターリングエンジンおいて、接触時の摩擦抵抗が小さく、作動流体量に応じた適正な空隙量を維持することができるスターリングエンジンの再生器用部品及びこれを用いた再生器を提供することにある。
Accordingly, an object of the present invention is a Stirling engine in which a cylindrical regenerator is disposed around a displacer, and the Stirling that has a small frictional resistance at the time of contact and can maintain an appropriate gap amount according to the amount of working fluid. An object of the present invention is to provide a regenerator part for an engine and a regenerator using the same.
この目的を達成するために創案された本発明は、中空円盤状の金属薄板と前記金属薄板の内縁に沿って形成された櫛歯部とを備えたスターリングエンジンの再生器用部品である。
The present invention devised to achieve this object is a regenerator part of a Stirling engine provided with a hollow disk-shaped metal thin plate and a comb tooth portion formed along the inner edge of the metal thin plate.
前記櫛歯部の各櫛歯が前記金属薄板の中心に向かないように湾曲していると良い。
It is preferable that each comb tooth of the comb tooth portion is curved so as not to face the center of the metal thin plate.
前記金属薄板は、その外縁側の厚さが内縁側の厚さに比べて厚く形成されてなる段差部を備えると良い。
The metal thin plate is preferably provided with a step portion formed such that the outer edge side is thicker than the inner edge side.
また、本発明は、前記スターリングエンジンの再生器用部品が積層されて構成されたことを特徴とするスターリングエンジンの再生器である。
Further, the present invention is a regenerator of a Stirling engine characterized in that the regenerator parts of the Stirling engine are laminated.
本発明によれば、ディスプレーサ周りに円筒型の再生器が配置されたスターリングエンジンおいて、接触時の摩擦抵抗が小さく、作動流体量に応じた適正な空隙量を維持することができるスターリングエンジンの再生器用部品及びこれを用いた再生器を提供することができる。
According to the present invention, in a Stirling engine in which a cylindrical regenerator is disposed around a displacer, the friction resistance at the time of contact is small, and a Stirling engine capable of maintaining an appropriate gap amount according to the amount of working fluid. A regenerator component and a regenerator using the same can be provided.
以下、本発明の好適な実施の形態を添付図面にしたがって説明する。
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
図１，２に示すように、本実施の形態に係るスターリングエンジンの再生器用部品１０は、中空円盤状の金属薄板１１と金属薄板１１の内縁に沿って形成された櫛歯部１２とを備えたものである。
As shown in FIGS. 1 and 2, the regenerator component 10 of the Stirling engine according to the present embodiment includes a hollow disk-shaped metal thin plate 11 and a comb tooth portion 12 formed along the inner edge of the metal thin plate 11. It is a thing.
櫛歯部１２は、金属薄板１１の外縁を基部１３として、その基部１３から複数の櫛歯１４が金属薄板１１の内縁側に延出するように形成されてなる。このような形状の櫛歯部１２により、作動流体と再生器用部品１０との接触面積が増加し、熱効率を向上させることができる。
The comb teeth portion 12 is formed such that the outer edge of the thin metal plate 11 is a base portion 13 and a plurality of comb teeth 14 extend from the base portion 13 to the inner edge side of the thin metal plate 11. With the comb-tooth portion 12 having such a shape, the contact area between the working fluid and the regenerator component 10 is increased, and the thermal efficiency can be improved.
各櫛歯１４は、金属薄板１１の中心に向かないように、金属薄板１１と同一平面の範囲内で湾曲している。各櫛歯１４を曲線的な形状とすることで、図５で説明したディスプレーサ５７が櫛歯部１２に接触したときに、各櫛歯１４の先端が変形し、ディスプレーサ５７との間の摩擦抵抗を小さくすることができる。また、各櫛歯１４の先端側は、柔軟に変形するように基部側よりも細くなっており、これにより摩擦抵抗を更に小さくすることができる。
Each comb tooth 14 is curved within the same plane as the metal thin plate 11 so as not to face the center of the metal thin plate 11. Since each comb tooth 14 has a curved shape, when the displacer 57 described in FIG. 5 comes into contact with the comb tooth portion 12, the tip of each comb tooth 14 is deformed, and the friction resistance between the displacer 57 and the displacer 57. Can be reduced. Moreover, the front end side of each comb tooth 14 is thinner than the base side so as to be deformed flexibly, and this can further reduce the frictional resistance.
各櫛歯１４の間に形成される隙間１５の総量、即ち空隙量はスターリングエンジンの仕様により決定される。この隙間１５を通じて作動流体が熱交換器内を移動する。
The total amount of the gaps 15 formed between the comb teeth 14, that is, the gap amount is determined by the specifications of the Stirling engine. The working fluid moves through the gap 15 in the heat exchanger.
金属薄板１１は、０．１～０．２ｍｍ程度の厚さを有しており、図３に示すように、その外縁側の厚さが内縁側の厚さに比べて厚く形成されてなる段差部１６を備えることが好ましい。
The metal thin plate 11 has a thickness of about 0.1 to 0.2 mm, and as shown in FIG. 3, a step formed by forming the outer edge side thicker than the inner edge side. It is preferable to provide the part 16.
この段差部１６は、再生器用部品１０を積層したときに隙間１５が閉塞しないようにするためのものである。つまり、段差部１６を設けることで、積層された一方の再生器用部品１０の櫛歯１４が他方の再生器用部品１０の隙間１５に重なって隙間１５を閉塞するようなことがなくなる。
The step 16 is for preventing the gap 15 from being closed when the regenerator parts 10 are stacked. In other words, by providing the stepped portion 16, the stacked comb teeth 14 of one regenerator component 10 do not overlap the gap 15 of the other regenerator component 10 and block the gap 15.
これまで説明した再生器用部品１０を必要な厚さ分だけ積層すると、図４に示すような円筒型の再生器４０が得られる。
When the regenerator parts 10 described so far are stacked by a necessary thickness, a cylindrical regenerator 40 as shown in FIG. 4 is obtained.
この再生器４０によれば、ディスプレーサ周りに円筒型の再生器が配置されたスターリングエンジンおいて、接触時の摩擦抵抗が小さく、作動流体量に応じた適正な空隙量を維持することができる。
According to this regenerator 40, in a Stirling engine in which a cylindrical regenerator is disposed around the displacer, the frictional resistance at the time of contact is small, and an appropriate gap amount corresponding to the amount of working fluid can be maintained.
１０ 再生器用部品
１１ 金属薄板
１２ 櫛歯部
１３ 基部
１４ 櫛歯
１５ 隙間
１６ 段差部 DESCRIPTION OFSYMBOLS 10 Regenerator part 11 Metal thin plate 12 Comb tooth part 13 Base part 14 Comb tooth 15 Crevice 16 Step part
１１ 金属薄板
１２ 櫛歯部
１３ 基部
１４ 櫛歯
１５ 隙間
１６ 段差部 DESCRIPTION OF
Claims (4)
- 中空円盤状の金属薄板と前記金属薄板の内縁に沿って形成された櫛歯部とを備えたことを特徴とするスターリングエンジンの再生器用部品。 A Stirling engine regenerator component comprising a hollow disk-shaped metal thin plate and a comb tooth portion formed along an inner edge of the metal thin plate.
- 前記櫛歯部の各櫛歯が前記金属薄板の中心に向かないように湾曲している請求項１に記載のスターリングエンジンの再生器用部品。 The Stirling engine regenerator part according to claim 1, wherein each comb tooth of the comb tooth portion is curved so as not to face the center of the thin metal plate.
- 前記金属薄板は、その外縁側の厚さが内縁側の厚さに比べて厚く形成されてなる段差部を備える請求項１又は２に記載のスターリングエンジンの再生器用部品。 The regenerator part for a Stirling engine according to claim 1 or 2, wherein the thin metal plate has a stepped portion formed such that the outer edge side is thicker than the inner edge side.
- 請求項１～３のいずれかに記載のスターリングエンジンの再生器用部品が積層されて構成されたことを特徴とするスターリングエンジンの再生器。 A regenerator of a Stirling engine, characterized in that the Stirling engine regenerator part according to any one of claims 1 to 3 is laminated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012031728A JP5962050B2 (en) | 2012-02-16 | 2012-02-16 | Stirling engine regenerator component and regenerator using the same |
| JP2012-031728 | 2012-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013122142A1 true WO2013122142A1 (en) | 2013-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2013/053526 WO2013122142A1 (en) | 2012-02-16 | 2013-02-14 | Stirling engine regenerator component and regenerator using same |
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| JP (1) | JP5962050B2 (en) |
| WO (1) | WO2013122142A1 (en) |
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| WO2011004603A1 (en) * | 2009-07-10 | 2011-01-13 | 川崎重工業株式会社 | Heat engine regenerator and stirling engine using the regenerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4401247C2 (en) * | 1994-01-18 | 1998-10-08 | Bosch Gmbh Robert | Heat exchanger |
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2012
- 2012-02-16 JP JP2012031728A patent/JP5962050B2/en not_active Expired - Fee Related
-
2013
- 2013-02-14 WO PCT/JP2013/053526 patent/WO2013122142A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293334A (en) * | 1994-04-28 | 1995-11-07 | Sanyo Electric Co Ltd | External combustion engine |
| JP2000028214A (en) * | 1998-07-08 | 2000-01-28 | Sharp Corp | Regenerator for stirling engine |
| JP2000180081A (en) * | 1998-12-11 | 2000-06-30 | Chugai Ro Co Ltd | Heat storage body and heat storage radiant tube burner employing it |
| JP2006524792A (en) * | 2003-04-24 | 2006-11-02 | サンパワー・インコーポレーテツド | Involute foil regenerator |
| WO2011004603A1 (en) * | 2009-07-10 | 2011-01-13 | 川崎重工業株式会社 | Heat engine regenerator and stirling engine using the regenerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5962050B2 (en) | 2016-08-03 |
| JP2013167220A (en) | 2013-08-29 |
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