JPS60205157A - Cold accumulator type refrigerator - Google Patents
Cold accumulator type refrigeratorInfo
- Publication number
- JPS60205157A JPS60205157A JP6061684A JP6061684A JPS60205157A JP S60205157 A JPS60205157 A JP S60205157A JP 6061684 A JP6061684 A JP 6061684A JP 6061684 A JP6061684 A JP 6061684A JP S60205157 A JPS60205157 A JP S60205157A
- Authority
- JP
- Japan
- Prior art keywords
- working gas
- piston
- hole
- exhaust
- intake
- 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.)
- Granted
Links
Landscapes
- Compressor (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、蓄冷器式冷凍機に係１八特にピストンをガス
駆動する蓄冷器式冷凍機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a regenerator type refrigerator, and particularly relates to a regenerator type refrigerator in which a piston is driven by gas.
ピストンをガス駆動する蓄冷器式冷凍機としては、例え
ば、特公昭４７−５８７２号公報にて開示されたような
冷凍機がある。該冷凍機は、ピストンの一端面と、該ピ
ストンが内部で往復動するシリンダの一端面並びに側面
とで形成される室にオリフィスを介して連通するサージ
容積室を設けたもので、ピストンの他端側とシリンダの
他端面並びに側面とで形成される膨張室への回転バルブ
の作動による作動ガスの蓄冷器を介しての吸排気の過程
で、作動ガスの吸気時に高圧となり作動ガスの排気時に
低圧となる膨張室とそのほぼ中間の圧力を有するサージ
容積室との圧力差によりピストンは往復駆動される。An example of a regenerator type refrigerator in which a piston is driven by gas is a refrigerator as disclosed in Japanese Patent Publication No. 47-5872. The refrigerator is provided with a surge volume chamber that communicates via an orifice with a chamber formed by one end surface of a piston and one end surface and side surface of a cylinder in which the piston reciprocates. In the process of intake and exhaust of working gas through a regenerator by operating a rotary valve into the expansion chamber formed by the end side, the other end surface of the cylinder, and the side surface, the pressure becomes high when the working gas is taken in, and when the working gas is exhausted. The piston is driven to reciprocate due to the pressure difference between the expansion chamber, which has a low pressure, and the surge volume chamber, which has a pressure approximately in the middle thereof.
このような蓄冷器式冷凍機では、作動ガスの排気時に膨
張室の圧力がサージ容積室の圧力以下になった時点でピ
ストンはシリンダの他端面に向つて駆動され膨張室の容
積が減少するため、圧力ー容積曲線（以下、Ｐ−Ｖ線図
と略）の面積減少を生じ、この分だけ図示効率が低下す
るという問題がある。In such a regenerator type refrigerator, when the pressure in the expansion chamber drops below the pressure in the surge volume chamber when exhausting working gas, the piston is driven toward the other end of the cylinder and the volume of the expansion chamber decreases. , there is a problem in that the area of the pressure-volume curve (hereinafter abbreviated as PV diagram) decreases, and the illustration efficiency decreases by this amount.
本発明の目的は、作動ガスの排気時における膨張室容積
の減少を抑制することで、Ｐ−Ｖ線図の面積減少を抑制
して図示効率を向上できる蓄冷器式冷凍機を提供するこ
とにある。An object of the present invention is to provide a regenerator type refrigerator that can suppress a decrease in the area of a P-V diagram and improve indicated efficiency by suppressing a decrease in expansion chamber volume when exhausting working gas. be.
本発明は、回転バルブが面接触して回転可能に設けられ
る固定バルブに、膨張室への作動ガスの吸排気用で回転
バルブの回転により作動ガス供給口と連通ずる吸排気孔
と、該吸排気孔と作動ガス排出口とを回転バルブの回転
により連通させる作動ガスの排出孔と、回転バルブの回
転により作動ガス供給口と連通ずるピストン往復駆動用
のガス導入孔と、該ガス導入孔と排出孔とを連通ずるバ
イパス孔とを形成したことを特徴とするもので、作動ガ
スの排気時におけるピストンの移動を停止させ、この時
の膨張室容積の減少を抑制しようとしたものである。The present invention provides a fixed valve rotatably provided with a rotary valve in surface contact with the fixed valve, and an intake/exhaust hole for intake/exhaust of working gas into an expansion chamber, which communicates with a working gas supply port by rotation of the rotary valve, and the intake/exhaust hole. a working gas exhaust hole that communicates with the working gas exhaust port by rotation of a rotary valve; a gas introduction hole for reciprocating the piston that communicates with the working gas supply port by rotation of the rotary valve; and the gas introduction hole and the discharge hole. This is characterized by the formation of a bypass hole that communicates with the piston, and is intended to stop the movement of the piston when exhausting the working gas and suppress the reduction in the volume of the expansion chamber at this time.
本発明の一実施例を第１図、第２図により説明する。 An embodiment of the present invention will be described with reference to FIGS. 1 and 2.
第１図で、底壁な有するシリンダｌＯには、頂部に凹加
が形成されたピストン２１が外側面にピストンリングｎ
を環装され往復動、この場合は、上下動自在に内設され
ている。また、ピストン２１には蓄冷材ｎが内蔵され、
蓄冷材ｎを介して連通する流路乞、２４が形成されてい
る。固定バルブ美は、一端部に口開に挿入可能な突起３
１を有している。In FIG. 1, a cylinder lO having a bottom wall has a piston 21 having a recess formed on the top and a piston ring n on the outer surface.
It is ring-mounted and reciprocating, in this case, it is internally installed so that it can move up and down freely. In addition, the piston 21 has a built-in cold storage material n,
A flow path 24 is formed which communicates via the cold storage material n. Fixed valve beauty has 3 protrusions on one end that can be inserted into the mouth opening.
1.
ピストン４が内股されたシリンダ１０の頂部には、ピス
トンリング澄がｍ装された突起３１を口開に挿入シて固
定バルブ（資）が気密に設けられている。固定バルブ美
の他端部には、モータ４０とモータ切により回転駆動さ
れる回転バルブ（資）とが内股され、作動ガス供給口ω
が形成されたハウジング７０が気密に設けられている。A fixed valve is airtightly provided at the top of the cylinder 10 in which the piston 4 is inserted by inserting a protrusion 31 fitted with a piston ring into the opening. The other end of the fixed valve is equipped with a motor 40 and a rotary valve (equipment) that is rotationally driven by turning off the motor, and a working gas supply port ω.
A housing 70 is provided in an airtight manner.
作動ガス供給口ωは、圧縮機（図示省略）の吐出端に連
結されている。回転バルブ父には、ハウジング７０内を
介し作動ガス供給口ωと連通する吸気溝５１が形成され
ると共に排気導溝５２が形成されている。固定バルブ加
には、ピストン加の底面とシリンダ１０の底面並びに側
面とで形成された膨張室１１への作動ガスの吸排気用で
回転バルブ父の回転により、この場合、吸気溝５１、ハ
ウジング７０内を介して作動ガス供給口ωと連通ずる吸
排気孔おと、吸排気孔おと、この場合、固定バルブ（９
）に形成され圧縮機の吸入端に連結された作動ガス排出
口６１とを回転バルブ父の回転により、この場合は、排
気導溝５２を介して連通させる作動ガスの排出孔あと、
回転バルブ団の回転により、この場合、吸気溝５１．ハ
ウジング７０内を介して作動ガス供給目印と連通するピ
ストン往復駆動用のガス導入孔あと、ガス導入孔あと排
出孔あとを連通ずるバイパス孔部とが形成されている。The working gas supply port ω is connected to a discharge end of a compressor (not shown). An intake groove 51 communicating with the working gas supply port ω through the housing 70 is formed in the rotary valve body, and an exhaust guide groove 52 is formed therein. The fixed valve is connected to the intake groove 51 and the housing 70 by rotation of the rotary valve for intake and exhaust of working gas into the expansion chamber 11 formed by the bottom surface of the piston and the bottom and side surfaces of the cylinder 10. The intake/exhaust hole communicates with the working gas supply port ω through the inside, and in this case, the fixed valve (9
) and connected to the suction end of the compressor through the working gas exhaust port 61 through the rotation of the rotary valve, in this case, the exhaust guide groove 52;
Due to the rotation of the rotary valve group, in this case, the intake groove 51. A gas introduction hole for reciprocating the piston, which communicates with the working gas supply mark through the inside of the housing 70, and a bypass hole, which communicates between the gas introduction hole and the discharge hole, are formed.
この場合、ガス導入孔あの駆動ガス室り内への開口部と
バイパス孔あの排出孔調べの開口部とはオと
リフィスノなっている。In this case, the opening of the gas introduction hole into the driving gas chamber and the opening of the bypass hole and the discharge hole are in a rift.
次に、ピストンガの上下作動と低温の膨張室Ｕへの作動
ガスの吸・排出の作動サイクルについて説明する。Next, the operation cycle of the vertical movement of the piston gas and the intake and discharge of working gas into the low-temperature expansion chamber U will be explained.
第１図において、固定バルブ父上を面接触して回転バル
ブ父が回転することにより、圧縮機で昇圧され高圧とな
った作動ガスは、作動ガス供給目印よりハウジング７０
内へと導入され、まず最初に回転バルブ父の吸気溝５１
と固定バルブ美のガス導入孔あとが重なり合うと、ガス
導入孔あを経てシリンダ１０内の駆動ガス室丘へとオリ
フィスを介して導入され、ピストン２１を下方へ押し下
げる。このとき、過剰な駆動ガスはバイパス孔あを流通
しこのオリフィスで低圧となり排出孔あを経て作動ガス
排出口６１へと導かれ、その後、圧縮機の吸入端に戻さ
れる。また、低温の膨張室１１の低圧となった作動ガス
はピストン２１が下降することにより、流路冴、蓄冷材
ρ、流路る。口開を経て固定バルブ加の吸排気孔おから
回転バルブ父の排気導溝５２を通り、排出孔あを経て作
動ガス排出口６１へと排出される。この間ピストン２１
の上方の駆動ガス室１２の圧力も低（保たれているので
ピストン２１を下方に押し下げる力は弱くピストン２１
はしばらく上方位置に保持されている。このため膨張室
１１の容積は減少せず圧力のみが低下する。In FIG. 1, when the rotary valve head rotates with the fixed valve head in surface contact, the working gas, which has been boosted in pressure by the compressor and has become high pressure, is transferred from the working gas supply mark to the housing 70.
First, the rotary valve father's intake groove 51
When the gas introduction hole of the fixed valve and the fixed valve overlap, the gas is introduced through the gas introduction hole into the driving gas chamber in the cylinder 10 via the orifice, and pushes the piston 21 downward. At this time, excess driving gas flows through the bypass hole, becomes low pressure at this orifice, is guided to the working gas exhaust port 61 via the exhaust hole, and is then returned to the suction end of the compressor. Furthermore, the low-pressure working gas in the low-temperature expansion chamber 11 moves through the flow path, the cold storage material ρ, and the flow path as the piston 21 descends. Through the mouth opening, the okara passes through the intake/exhaust hole of the fixed valve, the exhaust guide groove 52 of the rotary valve, and is discharged to the working gas exhaust port 61 via the exhaust hole. During this time, the piston 21
The pressure in the upper drive gas chamber 12 is also kept low, so the force pushing down the piston 21 is weak and
is held in the upper position for a while. Therefore, the volume of the expansion chamber 11 does not decrease, but only the pressure decreases.
これがＰ−Ｖ線図の面積減少を少なくして図示効率の向
上に寄与する。This reduces the reduction in the area of the PV diagram and contributes to improving the illustration efficiency.
回転バルブ（資）が更に回転し、吸気温５１と固定バル
ブ別の吸排気孔おが重なると、高圧の作動ガスは吸排気
孔おを経由して回加、流路幻、蓄冷材ｎを通って流路冴
より低温の膨張室１１へ流入する。When the rotary valve rotates further and the intake air temperature 51 overlaps with the intake and exhaust holes of the fixed valves, the high-pressure working gas is recirculated via the intake and exhaust holes, passes through the flow path, and passes through the cold storage material. It flows into the expansion chamber 11 which is lower in temperature than the flow path.
このとき駆動ガス室戎に先に流入した作動ガスはオリフ
ィスからピストン駆動用のガス導入孔あ。At this time, the working gas that first entered the driving gas chamber is passed from the orifice to the gas introduction hole for driving the piston.
バイパス孔あを経て、このオリフィスより排出孔あへと
流出し、ピストン４は上方へ押し上げられる。なお、こ
のとき、固定バルブ（資）のピストン駆動用のガス導入
孔あおよび排出孔瀦は回転バルブ団により作動ガス供給
口ωと遮断されている。It flows out from this orifice to the discharge hole via the bypass hole, and the piston 4 is pushed upward. At this time, the piston-driving gas introduction hole and exhaust hole of the fixed valve are isolated from the working gas supply port ω by the rotating valve group.
次に回転バルブ（資）が回転して排気導溝５２と固定バ
ルブ美のピストン駆動用のガス導入孔あが重なり合うと
駆動ガス室圧のガス圧は作動ガス排出口６１での圧力ま
で一気に降圧し、ピストン２１は上死点まで上昇する。Next, when the rotary valve rotates and the exhaust guide groove 52 overlaps with the gas inlet hole for driving the piston of the fixed valve, the gas pressure in the driving gas chamber drops all at once to the pressure at the working gas outlet 61. Then, the piston 21 rises to the top dead center.
次に、回転バルブ父が更に回転し、排気導ｉ＠ｓｚと固
定バルブ（９）の吸排気孔おとが重なり合うと、低温の
膨張室１１およびピストン２１の内部の高圧の作動ガス
は流路羽、口開を経て固定バルブ頷の吸排気孔おから回
転バルブ父の排気導ｉ＠ｓ２．固定バルブ園の排出孔Ｕ
を通って作動ガス排出口６１へ瞬時に排出され、しかる
後に、回転バルブ閣の吸気構５１と固定バルブ加のピス
トン駆動用のガス導入孔あが重なり合うことにより、ピ
ストン２１は下方へ押し下げられ、以下、回転バルブ（
資）の回転にともなりて、上記の作動を繰り返す。Next, when the rotary valve father rotates further and the exhaust guide i@sz and the intake/exhaust hole of the fixed valve (9) overlap, the high-pressure working gas inside the low-temperature expansion chamber 11 and the piston 21 flows into the flow path impeller. , Through the mouth opening, the intake and exhaust holes of the fixed valve nod, and the exhaust guide of the okara rotating valve father i@s2. Fixed valve garden discharge hole U
The working gas is instantly discharged through the working gas outlet 61, and then the piston 21 is pushed downward as the intake mechanism 51 of the rotary valve cabinet and the gas introduction hole for driving the piston of the fixed valve overlap. Below, the rotary valve (
The above operation is repeated as the capital) rotates.
本実施例によれば、ピストンが下死点（下方）の位置で
高圧の作動ガスの吸気を始め、上死点（上方）の位置ま
で吸気を継続し、ピストンが上死点に位置した状態で一
気に低圧まで排出膨張を行った後、ピストンを下死点方
向へ移動させるとを
とができるので、高い図示効率を得ることができる。According to this embodiment, the intake of high-pressure working gas is started when the piston is at the bottom dead center (downward) position, and the intake continues until the piston is at the top dead center (upward) position, and the piston is at the top dead center. After the piston is discharged and expanded to a low pressure at once, the piston can be moved toward the bottom dead center, so that high indicated efficiency can be obtained.
第２図に実線で示すＰ−Ｖ線図は、第１図に示す固定バ
ルブ園のピストン駆動用のガス導入孔あをφ３０龍、吸
排気孔羽をφ６．５ ｍ ＋低圧ガスの排出孔Ｍをφ８
０鰭とし、ピストン駆動用のガス導入孔あと吸排気孔お
との開き角を４８° とし、その固定バルブに合った回
転バルブを用いて運転したときの線図であり、線図に点
線で示す理想的な作動サイクルのＰ−Ｖ線図に近い９０
チ以上の図示効率を得ることができる。In the P-V diagram shown by the solid line in Figure 2, the gas inlet hole for driving the piston of the fixed valve shown in Figure 1 is φ30 mm, and the intake and exhaust hole blade is φ6.5 m + low pressure gas discharge hole M. φ8
0 fin, the opening angle between the gas inlet hole for driving the piston and the intake/exhaust hole is 48°, and the diagram shows operation using a rotary valve that matches the fixed valve, and is indicated by a dotted line in the diagram. 90, which is close to the ideal operating cycle P-V diagram
It is possible to obtain an illustration efficiency of more than 1.
本発明は、以上説明したように、回転バルブが面接触し
て回転可能に設けられる固定バルブに、膨張室への作動
ガスの吸排気用で回転バルブの回転により作動ガス供給
口と連通する吸排気孔と、該吸排気孔と作動する作動ガ
ス排出口とを回転バルブの回転により連通させる作動ガ
スの排出孔と、回転バルブの回転により作動ガス供給口
と連通ずるピストン往復駆動用のガス導入孔と、該ガス
導入孔と排出孔とを連通するバイパス孔とを形成したこ
とで、作動ガスの排気時におけるピストンの移動を停止
させ、この時の膨張室容積の減少な抑制できるので、Ｐ
−Ｖ線図の面積れ少を抑制でき図示効率を向上できると
いう効果がある。As explained above, the present invention provides a fixed valve in which a rotary valve is rotatably provided in surface contact with each other, and a fixed valve that is connected to a working gas supply port by rotation of the rotary valve for intake and exhaust of working gas into an expansion chamber. a working gas exhaust hole that communicates the intake/exhaust hole with an activated working gas exhaust port by rotation of a rotary valve; and a gas introduction hole for reciprocating the piston that communicates with a working gas supply port by rotation of the rotary valve. By forming the bypass hole that communicates the gas introduction hole and the discharge hole, it is possible to stop the movement of the piston when exhausting the working gas and suppress the decrease in the expansion chamber volume at this time.
This has the effect of suppressing the area loss of the -V diagram and improving the illustration efficiency.
第１図は、本発明による蓄冷器式冷凍機の一実施例を示
す縦断面図、第２図は、第１図の蓄冷器式冷凍機でのＰ
−Ｖ線図である。
１０・・・・・・シリング、１１・・・・・・膨張室、
２１・・・・・・ピストン、ｎ・・・・・・蓄冷材、加
・・・・ 固定バルブ、お・・・・・・吸排気孔、あ・
・・・・・排出孔、あ・・・・・・ガス導入孔、あ・・
・バイパス孔、（資）・・・・・・回転バルブ、ω・・
・・・・作動ガス供給口、６１・・・・・・作動ガス排
出口才１訂
７ｎ
２４／１
才２図FIG. 1 is a vertical sectional view showing an embodiment of the regenerator type refrigerator according to the present invention, and FIG.
-V diagram. 10... Schilling, 11... Expansion chamber,
21... Piston, n... Cool storage material, Addition... Fixed valve, O... Intake/exhaust hole, A...
...Exhaust hole, ah...Gas introduction hole, ah...
・Bypass hole, (capital)...Rotary valve, ω...
... Working gas supply port, 61... Working gas discharge port 1st edition 7n 24/1 2nd figure
Claims (1)
て回転可能に設けられた回転バルブの回転により膨張室
に吸入され、回転バルブの回転により膨張室から排気さ
れ作動ガス排出口から排出される作動ガスでピストンを
往復駆動する蓄冷器式冷凍機において、前記固定バルブ
に、前記膨張室への前記作動ガスの吸排気用で回転バル
ブの回転により前記作動ガス供給口と連通する吸排気孔
と、該吸排気孔と前記作動ガス排気口とを回転バルブの
回転により連通させる作動ガスの排出孔と、回転バルブ
の回転により作動ガス供給口と連通ずるピストン往復駆
動用のガス導入孔と、該ガス導入孔と排気孔とを連通ず
るバイパス孔とを形成したことを特徴とする蓄冷器式膨
張機。1. The working gas is supplied from the working gas supply port and is drawn into the expansion chamber by the rotation of the rotary valve rotatably provided in surface contact with the fixed valve, exhausted from the expansion chamber by the rotation of the rotary valve, and discharged from the working gas exhaust port. In a regenerator type refrigerator that reciprocates a piston with a working gas, the fixed valve has an intake/exhaust hole for intake/exhaust of the working gas to the expansion chamber and communicates with the working gas supply port by rotation of a rotary valve. , a working gas exhaust hole that communicates the intake and exhaust hole with the working gas exhaust port by rotation of a rotary valve; a gas introduction hole for reciprocating the piston that communicates with the working gas supply port by rotation of the rotary valve; A regenerator type expander characterized in that a bypass hole is formed to communicate an introduction hole and an exhaust hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6061684A JPS60205157A (en) | 1984-03-30 | 1984-03-30 | Cold accumulator type refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6061684A JPS60205157A (en) | 1984-03-30 | 1984-03-30 | Cold accumulator type refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60205157A true JPS60205157A (en) | 1985-10-16 |
| JPH0349032B2 JPH0349032B2 (en) | 1991-07-26 |
Family
ID=13147383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6061684A Granted JPS60205157A (en) | 1984-03-30 | 1984-03-30 | Cold accumulator type refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60205157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993010407A1 (en) * | 1991-11-18 | 1993-05-27 | Sumitomo Heavy Industries, Ltd. | Cryogenic refrigerating device |
-
1984
- 1984-03-30 JP JP6061684A patent/JPS60205157A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993010407A1 (en) * | 1991-11-18 | 1993-05-27 | Sumitomo Heavy Industries, Ltd. | Cryogenic refrigerating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349032B2 (en) | 1991-07-26 |
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