JPH0343691A - Scroll compressor - Google Patents
Scroll compressorInfo
- Publication number
- JPH0343691A JPH0343691A JP17629189A JP17629189A JPH0343691A JP H0343691 A JPH0343691 A JP H0343691A JP 17629189 A JP17629189 A JP 17629189A JP 17629189 A JP17629189 A JP 17629189A JP H0343691 A JPH0343691 A JP H0343691A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- refrigerant injection
- hole
- compression chamber
- scroll
- 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.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 65
- 238000002347 injection Methods 0.000 claims abstract description 51
- 239000007924 injection Substances 0.000 claims abstract description 51
- 230000006835 compression Effects 0.000 claims abstract description 29
- 238000007906 compression Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 description 8
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 2
- 241000277269 Oncorhynchus masou Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/70—Safety, emergency conditions or requirements
- F04C2270/72—Safety, emergency conditions or requirements preventing reverse rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/109—Purpose of the control system to prolong engine life
- F05B2270/1097—Purpose of the control system to prolong engine life by preventing reverse rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば全密閉形の冷媒圧縮機に使用して好適
なスクロール圧縮機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a scroll compressor suitable for use, for example, in a completely hermetic refrigerant compressor.
一般に、スクロール圧縮機は冷凍装置や空気調和装置に
使用され、冷媒あるいは空気を圧縮するものとして知ら
れている。Scroll compressors are generally used in refrigeration systems and air conditioners, and are known for compressing refrigerant or air.
従来、この種のスクロール圧縮機は、例えば特開昭６０
−１６６７７８号公報等に開示され、第４図に示すよう
に構成されている。これを同図に基づいて説明すると、
同図において、符号ｌで示すものはシェルとしての密閉
容器で、有底筒体１ａおよび蓋体１ｂからなり、周壁に
は内外に開口する吸入管２が取り付けられている。この
密閉容器１内の底部には、潤滑油３が貯溜する油溜４が
設けられている。５は返油孔５ａおよびガス通路５ｂを
有する上方ブラケットで、前記密閉容器１内に固定され
ており、中央部には上方に開口する凹孔６およびこの凹
孔６の内外に開口する挿通孔７が設けられている。８は
返油孔８ａおよびガス通路８ｂ、 ８ｃを有する下方ブ
ラケットで、前記密閉容器１内に固定されており、中央
部には前記挿通孔７と同一の軸線方向に開口する挿通孔
９が設けられている。ＩＯは軸線方向に開口する冷媒噴
射孔１１（２個）と吐出口１２を有する固定スクロール
で、台板１０ａおよび渦巻突起１０ｂからなり、前記上
方ブラケット５の上端面に固定されている。この固定ス
クロール１０には、前記吐出口１２に連通しかつ前記密
閉容器１を挿通する吐出管１３が固着されている。１４
は下方に突出する揺動軸１５を有する揺動スクロールで
、前記台板１０ａに対向する台板１４ａおよび前記渦巻
突起１０ｂに偏心して組み合わされた渦巻突起１４ｂか
らなり、前記上方ブラケット５にスラスト軸受Ｉ６を介
して支承されている。この揺動スクロール１４と前記固
定スクロール１０この間には、偏心方向に開口する吸入
口１７および運転時に外周部から内周部に向かって移動
する複数対の圧縮室１８が設けられている。１９は前記
油溜４の潤滑油３中に臨むオイルキャップ２０をその先
端部に有する主軸で、前記揺動軸１５がｔｇ動軸軸受２
１介して嵌合する偏心孔２２ａおよびこの偏心孔２２ａ
に連通ずる偏心給油通路２２ｂをもつ大径部２２と、こ
の大径部２２の偏心給油通路２２ｂと先端面に開口する
偏心給油路２３ａをもつ小径部２３とからなり、前記挿
通孔７．９に軸受２４．２５を介して回転自在に支承さ
れている。２６は前記凹孔６内に臨むオルダム継手で、
前記上方ブラケット５と前記揺動スクロール１４との間
に設けられている。このオルダム継手２６によって、前
記揺動スクロール１４が公転運動（自転せず）するよう
に構成されている。２７は前記主軸１９を回転する駆動
装置で、モータロータ２７ａおよびモータステータ２７
ｂからなり、前記密閉容器１内に設けられている。２８
は差圧利用によって前記圧縮室１８に液冷媒を供給する
冷媒噴射用配管で、前記凝縮器の出口に接続する管体２
９と、この管体２９の開口端面と前記固定スクロール１
０の端面との間に設けられ前記冷媒噴射孔１１に連通す
る通孔３０ａを有するフランジ３０とか°らなり、前記
密閉容器１お挿通孔１ｃに例えばろう付は等によって挿
通固定されている。なお、運転時において各対の圧縮室
１８が点対称な位置に同時に形成されることから、各冷
媒噴射孔１１は圧縮室１８に対応して対称な位置に形成
されている。Conventionally, this type of scroll compressor has been developed, for example, in Japanese Patent Application Laid-Open No. 60
It is disclosed in Japanese Patent No. 166778, etc., and is configured as shown in FIG. To explain this based on the same figure,
In the figure, what is designated by the symbol 1 is a closed container as a shell, which is composed of a bottomed cylindrical body 1a and a lid body 1b, and a suction pipe 2 that opens inward and outward is attached to the peripheral wall. An oil reservoir 4 in which lubricating oil 3 is stored is provided at the bottom of the closed container 1. Reference numeral 5 denotes an upper bracket having an oil return hole 5a and a gas passage 5b, which is fixed inside the sealed container 1, and has a recessed hole 6 opening upward in the center and an insertion hole opening inside and outside of this recessed hole 6. 7 is provided. Reference numeral 8 denotes a lower bracket having an oil return hole 8a and gas passages 8b, 8c, which is fixed in the sealed container 1, and has an insertion hole 9 in the center that opens in the same axial direction as the insertion hole 7. It is being IO is a fixed scroll having refrigerant injection holes 11 (two) and discharge ports 12 that open in the axial direction, and is composed of a base plate 10a and a spiral protrusion 10b, and is fixed to the upper end surface of the upper bracket 5. A discharge pipe 13 that communicates with the discharge port 12 and passes through the closed container 1 is fixed to the fixed scroll 10 . 14
is an oscillating scroll having a oscillating shaft 15 projecting downward, and is composed of a base plate 14a opposite to the base plate 10a and a spiral protrusion 14b eccentrically combined with the spiral protrusion 10b, and a thrust bearing is mounted on the upper bracket 5. It is supported via I6. A suction port 17 that opens in an eccentric direction and a plurality of pairs of compression chambers 18 that move from the outer circumference toward the inner circumference during operation are provided between the oscillating scroll 14 and the fixed scroll 10. Reference numeral 19 denotes a main shaft having an oil cap 20 at its tip facing into the lubricating oil 3 of the oil reservoir 4, and the swing shaft 15 is connected to the tg moving shaft bearing 2.
1 and the eccentric hole 22a that fits through the eccentric hole 22a.
It consists of a large diameter portion 22 having an eccentric oil supply passage 22b communicating with the large diameter portion 22, and a small diameter portion 23 having an eccentric oil supply passage 23a opening at the tip surface of the eccentric oil supply passage 22b of this large diameter portion 22. is rotatably supported via bearings 24 and 25. 26 is an Oldham joint facing into the recessed hole 6;
It is provided between the upper bracket 5 and the swinging scroll 14. The Oldham joint 26 allows the swinging scroll 14 to revolve (not rotate). 27 is a drive device that rotates the main shaft 19, and includes a motor rotor 27a and a motor stator 27.
b, and is provided inside the sealed container 1. 28
is a refrigerant injection pipe that supplies liquid refrigerant to the compression chamber 18 using differential pressure, and the pipe body 2 is connected to the outlet of the condenser.
9, the opening end surface of this tube body 29 and the fixed scroll 1
The flange 30 has a through hole 30a which is provided between the end face of the airtight container 1 and the refrigerant injection hole 11 and communicates with the refrigerant injection hole 11. In addition, since each pair of compression chambers 18 are simultaneously formed at point-symmetrical positions during operation, each refrigerant injection hole 11 is formed at a symmetrical position corresponding to the compression chambers 18.
このように構成されたスクロール圧縮機においては、駆
動装置２７のモータロータ２７ａによって主軸１９が回
転すると、揺動スクロール１４がオルダム継手２６によ
って自転を阻止されながら公転する。In the scroll compressor configured in this manner, when the main shaft 19 is rotated by the motor rotor 27a of the drive device 27, the swinging scroll 14 revolves while being prevented from rotating by the Oldham coupling 26.
このとき、吸入管２から密閉容器１内に吸入された冷媒
ガスは、ガス通路８ｂ、 ８ｃ、 ５ｂを経て吸入口１
７から圧縮室１８に取り込まれ、漸次圧縮されて吐出口
１２から吐出管１３を介して密閉容器ｌ外に吐き出され
る。また、圧縮室１８には、差圧を利用して凝縮器出口
（図示せず）の７夜ラインから絞り（図示せず）、冷媒
噴射用配管２８を通して冷媒ガスが供給される。At this time, the refrigerant gas sucked into the sealed container 1 from the suction pipe 2 passes through the gas passages 8b, 8c, and 5b to the suction port 1.
7 into the compression chamber 18, is gradually compressed, and is discharged from the discharge port 12 through the discharge pipe 13 to the outside of the closed container l. Further, refrigerant gas is supplied to the compression chamber 18 from a line at the condenser outlet (not shown) through a throttle (not shown) and a refrigerant injection pipe 28 using differential pressure.
ところで、この種のスクロール圧縮機においては、凝縮
器（図示せず）の出口から高圧側の液冷媒を冷媒噴射用
配管２８を介して圧縮室１８に供給するものであるが、
圧縮室１８の圧力が凝縮器出口側の圧力より高くなる過
圧縮状態が生じることがあり、この場合圧縮室１８から
圧縮途中の冷媒ガスが凝縮器出口の液ラインに逆流して
性能が低下するという問題があった。By the way, in this type of scroll compressor, liquid refrigerant on the high pressure side is supplied from the outlet of the condenser (not shown) to the compression chamber 18 via the refrigerant injection pipe 28.
An overcompression state may occur in which the pressure in the compression chamber 18 is higher than the pressure at the condenser outlet, and in this case, refrigerant gas in the middle of compression flows from the compression chamber 18 back into the liquid line at the condenser outlet, reducing performance. There was a problem.
そこで、第５図（例えば特開昭６０−２９５５４号公報
等に開示されている）に冷媒噴射用配管２８の途中に逆
流防止機構として電磁弁３１を設けることが考えられる
が、この場合圧縮室１８から電磁弁３１に至るまでの通
路の全容積Ｖ（冷媒噴射孔１１の容積をｖｌ、フランジ
３０の通孔３０ａの容積をＶ２＋ 冷媒噴射用配管２８
の一部２８ａの容積をＶ、とすると、Ｖ＝Ｖ。Therefore, it is conceivable to provide a solenoid valve 31 as a backflow prevention mechanism in the middle of the refrigerant injection pipe 28 as shown in FIG. 18 to the solenoid valve 31 (the volume of the refrigerant injection hole 11 is vl, the volume of the through hole 30a of the flange 30 is V2+), the refrigerant injection pipe 28
If the volume of the part 28a is V, then V=V.
＋ Ｖｚ ＋ ｔｈ）が所謂デッドボリュームとなり、
このデッドボリューム部と低圧力の外側圧縮室に連通ず
ると、デッドボリューム部内における冷媒ガスの膨張に
よって圧力損失が生じるという不都合があった。+ Vz + th) becomes the so-called dead volume,
When this dead volume portion is communicated with the low-pressure outer compression chamber, there is a disadvantage that pressure loss occurs due to expansion of refrigerant gas within the dead volume portion.
本発明はこのような事情に鑑みてなされたもので、冷媒
ガスの逆流による性能低下を防＋ｈすることができる共
に、デッドボリューム内における冷媒ガスの膨張による
圧力損失を低減することができるスクロール圧縮機を提
供するものである。The present invention has been made in view of these circumstances, and is a scroll compression method that can prevent performance degradation due to backflow of refrigerant gas and reduce pressure loss due to expansion of refrigerant gas within the dead volume. It provides an opportunity for
Ｃ課題を解決するための手段〕
本発明に係るスクロール圧縮機は、冷媒噴射用配管のフ
ランジの通孔を開閉する逆止弁を冷媒噴射孔内に設けた
ものである。Means for Solving Problem C] A scroll compressor according to the present invention is provided with a check valve in a refrigerant injection hole for opening and closing a through hole of a flange of a refrigerant injection pipe.
本発明においては、逆止弁によって圧縮室から凝縮器出
口への冷媒ガスの逆流を阻止することができると共に、
圧縮室から逆止弁に至るまでの通路のデッドボリューム
を冷媒噴射孔の容積より小さい容積に設定することがで
きる。In the present invention, the check valve can prevent the refrigerant gas from flowing backward from the compression chamber to the condenser outlet, and
The dead volume of the passage from the compression chamber to the check valve can be set to be smaller than the volume of the refrigerant injection hole.
以下、本発明の構成等を図に示す実施例によって詳細に
説明する。EMBODIMENT OF THE INVENTION Hereinafter, the structure etc. of this invention will be explained in detail by the Example shown in the figure.
第１図は本発明に係るスクロール圧縮機の要部を示す断
面図、第２図は同じく本発明におけるスクロール圧縮機
の要部を拡大して示す断面図で、同図以下において第４
図と同一の部材については同一の符号を付し、詳細な説
明は省略する。同図において、符号５０で示すものはそ
の中央部に吐出口５１を有する固定スクロールで、台板
５０ａおよび補巻突起５０ｂからなり、前記上方ブラケ
ット５の上端面に固定されている。この固定スクロール
５０の台板５０ａには、大径孔５２ａおよび小径孔５２
ｂを有する段状孔からなる冷媒噴射孔５２が設けられて
いる。この冷媒噴射孔５２の両孔５２ａ 、 ５２ｂの
うち小径孔５２ｂの開口周縁には、径方向に延在する複
数のスリ７） ５３ａを有する弁座環５３が一体に設け
られている。５４は前記弁座環５３に開口端面に着座可
能な逆止弁としてのインジェクション開閉弁で、前記冷
媒噴射孔５２の大径孔５２ａ内に進退自在に設けられて
おり、前記フランジ３０の通孔３０ａを開閉するように
構成されている。このインジェクション開閉弁５４は、
例えば焼き入れみがき鋼板等からなる円形仮によって形
成されている。５５は圧縮用のコイルスプリングで、前
記インジェクション開閉弁５４と前記冷媒噴射孔５２の
段部との間に弾装されている。FIG. 1 is a sectional view showing the main parts of a scroll compressor according to the present invention, and FIG. 2 is an enlarged sectional view showing the main parts of the scroll compressor according to the invention.
The same members as those in the figures are given the same reference numerals, and detailed explanations will be omitted. In the figure, a fixed scroll designated by reference numeral 50 has a discharge port 51 in its center, and is composed of a base plate 50a and an auxiliary winding protrusion 50b, and is fixed to the upper end surface of the upper bracket 5. The base plate 50a of the fixed scroll 50 has a large diameter hole 52a and a small diameter hole 52.
A refrigerant injection hole 52 is provided, which is a stepped hole having a diameter of 1.b. A valve seat ring 53 having a plurality of slots 7) 53a extending in the radial direction is integrally provided at the opening periphery of the small diameter hole 52b of both holes 52a and 52b of the refrigerant injection hole 52. Reference numeral 54 designates an injection opening/closing valve as a check valve that can be seated on the opening end surface of the valve seat ring 53, and is provided so as to be movable in and out of the large diameter hole 52a of the refrigerant injection hole 52. 30a is configured to open and close. This injection on-off valve 54 is
For example, it is formed by a circular piece of hardened and polished steel plate. A compression coil spring 55 is mounted between the injection on-off valve 54 and the stepped portion of the refrigerant injection hole 52.
このように構成されたスクロール圧縮機においては、冷
媒噴射用配管２８内の圧力Ｐ１が冷媒噴射孔５２内の圧
力Ｐ２より低い場合（ＰＩ＜Ｐｇ）すなわち圧縮室１８
内の圧力が凝縮器出口（図示せず）の液ライン圧力より
高い場合に第２図に示すようにコイルスプリング５５の
弾撥力によりインジェクション開閉弁５４が上方に距離
ｌ移動して冷媒噴射用配管２８を閉塞するから、圧縮室
１８から凝縮器出口（図示せず）への冷媒ガスの逆流が
阻止される。In the scroll compressor configured in this way, when the pressure P1 in the refrigerant injection pipe 28 is lower than the pressure P2 in the refrigerant injection hole 52 (PI<Pg), that is, the compression chamber 18
When the pressure inside the condenser is higher than the liquid line pressure at the condenser outlet (not shown), the elastic force of the coil spring 55 moves the injection on-off valve 54 upward a distance l as shown in FIG. Since the pipe 28 is closed, the backflow of refrigerant gas from the compression chamber 18 to the condenser outlet (not shown) is prevented.
一方、冷媒噴射用配管２８内の圧力Ｐ、が冷媒噴射孔５
２内の圧力Ｐ２より高い場合（ｐ＋＞ｐｚ）に第３図に
示すようにコイルスプリング５５の弾ｔａ力に抗しイン
ジェクション開閉弁５４が下方に距離ｅ移動して冷媒噴
射用配管２８を開放するから、凝縮器出口（図示せず）
の高圧側の液冷媒が同図に矢印で示すように絞り（図示
せず）、冷媒噴射孔５２等を経て圧縮室１８に噴射され
る。この後、圧縮室１８内の液冷媒は、蒸発しながら圧
縮されて吐出口１２から吐出管１３内に吐き出される。On the other hand, the pressure P inside the refrigerant injection pipe 28 is
2 (p+>pz), the injection on-off valve 54 moves downward a distance e against the elastic force of the coil spring 55 to open the refrigerant injection pipe 28, as shown in FIG. Therefore, the condenser outlet (not shown)
The liquid refrigerant on the high pressure side is injected into the compression chamber 18 through a constrictor (not shown), refrigerant injection hole 52, etc., as shown by the arrow in the figure. Thereafter, the liquid refrigerant in the compression chamber 18 is compressed while evaporating and is discharged from the discharge port 12 into the discharge pipe 13 .
また、本実施例においては、圧縮室１８からインジェク
ション開閉弁５４に至るまでの通路のデッドボリューム
を冷媒噴射孔５２の容積より小さい容積に設定すること
ができる。Further, in this embodiment, the dead volume of the passage from the compression chamber 18 to the injection on-off valve 54 can be set to be smaller than the volume of the refrigerant injection hole 52.
なお、本発明におけるインジェクション開閉弁の平面形
状としては、前述した実施例に限定されず、冷媒噴射用
配管２８を開閉することができる形状であればよく、そ
の平面形状は適宜変更することができる。Note that the planar shape of the injection on-off valve in the present invention is not limited to the above-described embodiments, and may be any shape that can open and close the refrigerant injection pipe 28, and the planar shape can be changed as appropriate. .
以上説明したように本発明によれば、冷媒噴射用配管の
フランジの通孔を開閉する逆止弁を冷媒噴射孔内に設け
たので、逆止弁によって圧縮室から凝縮器出口への冷媒
ガスの逆流を阻止することができるから、冷媒ガスの逆
流による性能低下を防止することができる。また、冷媒
噴射孔内に逆止弁を設けたことは、圧縮室から逆止弁に
至るまでの通路のデ・ノドボリュームを冷媒噴射孔の容
積より小さい容積に設定することができるから、逆止弁
と圧縮室間のデッドボリューム内における冷媒ガスの膨
張による圧力損失を低減することもできる。As explained above, according to the present invention, the check valve for opening and closing the through hole of the flange of the refrigerant injection pipe is provided in the refrigerant injection hole, so the check valve allows refrigerant gas to flow from the compression chamber to the condenser outlet. Since the backflow of refrigerant gas can be prevented, performance deterioration due to the backflow of refrigerant gas can be prevented. In addition, the provision of the check valve in the refrigerant injection hole allows the de-nod volume of the passage from the compression chamber to the check valve to be set to a smaller volume than the volume of the refrigerant injection hole. It is also possible to reduce pressure loss due to expansion of refrigerant gas in the dead volume between the stop valve and the compression chamber.
第１図は本発明に係るスクロール圧縮機の要部を示す断
面図、第２図は同しく本発明におけるスクロール圧縮機
の要部を拡大して示す断面図、第３図ｆａ）および（ｂ
）は逆止弁の動作状態を示す横断面図と縦断面図、第４
図および第５図は従来のスクロール圧縮機の全体と要部
を示す断面図である。
１・・・・密閉容器、１４・・・・揺動スクロール、１
８・・・・圧縮室、２８・・・・冷媒噴射用配管、２９
・・・・管体、３０・・・・フランジ、３０ａ・・・・
通孔、５０・・・・固定スクロール、５２・・・・冷媒
噴射孔、５２ａ ・・・・大径孔、５２ｂ・・・小径
孔、５３・・・・弁座環、５４・・・・インジェクショ
ン開閉弁、５５・・・・コイルスプリング。
代 理 人 大 岩 増 雄蘂１
図
２８ ： ４４−’ｔ 射＃ｉｉ＋、 、 ５２ｂ ：
、Ｊ〜？１ Ｌ２９ ： ’Ｌ 床、５３ ニーＰｒ
ｌ’１４第４
図FIG. 1 is a cross-sectional view showing the main parts of a scroll compressor according to the present invention, FIG. 2 is an enlarged cross-sectional view showing the main parts of the scroll compressor according to the present invention, and FIGS.
) is a cross-sectional view and a vertical cross-sectional view showing the operating state of the check valve, and
5 and 5 are cross-sectional views showing the entire conventional scroll compressor and essential parts. 1... Airtight container, 14... Oscillating scroll, 1
8...Compression chamber, 28...Refrigerant injection piping, 29
...Pipe body, 30...Flange, 30a...
Through hole, 50...Fixed scroll, 52...Refrigerant injection hole, 52a...Large diameter hole, 52b...Small diameter hole, 53...Valve seat ring, 54... Injection on/off valve, 55...Coil spring. Agent Oiwa Masu 1 Fig. 28: 44-'t shot #ii+, , 52b:
, J~? 1 L29: 'L floor, 53 knee Pr
l'14 Figure 4
Claims (1)
ールおよびこの固定スクロールと共に前記冷媒噴射孔に
連通する圧縮室を形成する揺動スクロールをその内部に
有するシェルと、このシェルに挿通固定され凝縮器の出
口から前記圧縮室に液冷媒を供給する冷媒噴射用配管と
を備え、この冷媒噴射用配管を、前記凝縮器の出口に接
続する管体と、この管体の開口端面と前記固定スクロー
ルの端面との間に設けられ前記冷媒噴射孔に連通する通
孔を有するフランジとによって形成し、このフランジの
通孔を開閉する逆止弁を前記冷媒噴射孔内に設けたこと
を特徴とするスクロール圧縮機。a shell having therein a fixed scroll provided with a refrigerant injection hole opening in the axial direction and an oscillating scroll forming a compression chamber communicating with the refrigerant injection hole together with the fixed scroll; and a condenser inserted and fixed into the shell. a refrigerant injection pipe that supplies liquid refrigerant to the compression chamber from an outlet of the condenser; a pipe body that connects the refrigerant injection pipe to the outlet of the condenser; and a flange having a through hole provided between the end face and communicating with the refrigerant injection hole, and a check valve for opening and closing the through hole of the flange is provided in the refrigerant injection hole. compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17629189A JPH0343691A (en) | 1989-07-07 | 1989-07-07 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17629189A JPH0343691A (en) | 1989-07-07 | 1989-07-07 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0343691A true JPH0343691A (en) | 1991-02-25 |
Family
ID=16011021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17629189A Pending JPH0343691A (en) | 1989-07-07 | 1989-07-07 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0343691A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05180182A (en) * | 1992-01-07 | 1993-07-20 | Mitsubishi Electric Corp | Refrigerating device |
| US6186753B1 (en) * | 1999-05-10 | 2001-02-13 | Scroll Technologies | Apparatus for minimizing oil leakage during reverse running of a scroll compressor |
| US6293776B1 (en) * | 2000-07-12 | 2001-09-25 | Scroll Technologies | Method of connecting an economizer tube |
| KR100724047B1 (en) * | 2005-06-10 | 2007-06-04 | 히다치 어플라이언스 가부시키가이샤 | Scroll compressor and refrigerating apparatus |
| WO2011013199A1 (en) * | 2009-07-28 | 2011-02-03 | 三菱電機株式会社 | Heat pump device, compressor with injection mechanism, and method of manufacturing scroll compressor with injection mechanism |
| JP2015014195A (en) * | 2013-07-03 | 2015-01-22 | 日立アプライアンス株式会社 | Refrigeration cycle |
| JP2016011620A (en) * | 2014-06-27 | 2016-01-21 | 三菱電機株式会社 | Scroll compressor |
| CN107288889A (en) * | 2017-07-10 | 2017-10-24 | 珠海格力节能环保制冷技术研究中心有限公司 | The increasing enthalpy structure and screw compressor of compressor |
| CN109519384A (en) * | 2018-12-06 | 2019-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, heat pump system |
-
1989
- 1989-07-07 JP JP17629189A patent/JPH0343691A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05180182A (en) * | 1992-01-07 | 1993-07-20 | Mitsubishi Electric Corp | Refrigerating device |
| US6186753B1 (en) * | 1999-05-10 | 2001-02-13 | Scroll Technologies | Apparatus for minimizing oil leakage during reverse running of a scroll compressor |
| US6293776B1 (en) * | 2000-07-12 | 2001-09-25 | Scroll Technologies | Method of connecting an economizer tube |
| KR100724047B1 (en) * | 2005-06-10 | 2007-06-04 | 히다치 어플라이언스 가부시키가이샤 | Scroll compressor and refrigerating apparatus |
| WO2011013199A1 (en) * | 2009-07-28 | 2011-02-03 | 三菱電機株式会社 | Heat pump device, compressor with injection mechanism, and method of manufacturing scroll compressor with injection mechanism |
| CN102472528A (en) * | 2009-07-28 | 2012-05-23 | 三菱电机株式会社 | Heat pump device, compressor with injection mechanism, and method of manufacturing scroll compressor with injection mechanism |
| KR101312762B1 (en) * | 2009-07-28 | 2013-09-27 | 미쓰비시덴키 가부시키가이샤 | Heat pump device, compressor with injection mechanism, and method of manufacturing scroll compressor with injection mechanism |
| JP5389173B2 (en) * | 2009-07-28 | 2014-01-15 | 三菱電機株式会社 | HEAT PUMP DEVICE, INJECTION COMPRESSION COMPRESSOR, AND INJECTION SUPPORT SCROLL COMPRESSOR |
| JP2015014195A (en) * | 2013-07-03 | 2015-01-22 | 日立アプライアンス株式会社 | Refrigeration cycle |
| JP2016011620A (en) * | 2014-06-27 | 2016-01-21 | 三菱電機株式会社 | Scroll compressor |
| CN105317676A (en) * | 2014-06-27 | 2016-02-10 | 三菱电机株式会社 | Vortex compressor |
| CN107288889A (en) * | 2017-07-10 | 2017-10-24 | 珠海格力节能环保制冷技术研究中心有限公司 | The increasing enthalpy structure and screw compressor of compressor |
| CN109519384A (en) * | 2018-12-06 | 2019-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, heat pump system |
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