JPS62139996A - Rotary compressor - Google Patents
Rotary compressorInfo
- Publication number
- JPS62139996A JPS62139996A JP28096685A JP28096685A JPS62139996A JP S62139996 A JPS62139996 A JP S62139996A JP 28096685 A JP28096685 A JP 28096685A JP 28096685 A JP28096685 A JP 28096685A JP S62139996 A JPS62139996 A JP S62139996A
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- opening
- discharge port
- valve
- cylinder
- 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
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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
- F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Check Valves (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、回転型圧縮機に係り、特に自動車空調用圧縮
機の吐出弁の開閉作用による吐出ガス温度の低減に好適
な回転型圧縮機に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotary compressor, and particularly to a rotary compressor suitable for reducing the temperature of discharged gas by opening and closing the discharge valve of an automobile air conditioning compressor. Regarding.
一般に圧縮機ではピストン機構を収容したシリンダの外
部の所定位置に弁シート部（弁座面）を形成し、ここに
圧力室に通じる吐出孔（吐出ポート）と、吐出孔を開閉
する吐出弁を設けている。Generally, in a compressor, a valve seat part (valve seat surface) is formed at a predetermined position on the outside of the cylinder that houses the piston mechanism, and this part has a discharge hole (discharge port) that communicates with the pressure chamber and a discharge valve that opens and closes the discharge hole. It is set up.
そして、この圧縮機における吐出弁の開閉作用によって
生ずる吐出ガスの温度が上昇するという問題がある。す
なわち、圧縮機では、吸入行程で吸入孔からガスを吸入
し、その吸入ガスを圧縮工程で圧縮し、吐出工程で圧縮
室の吐出孔から吐出弁を開いてケースとシリンダとの間
に画成される吐出圧室へ圧縮ガスを吐出するものである
が、ロータリ一式圧縮機のピストン機構を形成するベー
ン先端が吐出ポート部に達した時に、前段の圧縮工程で
圧縮された圧縮ガスは吐出圧力に達して吐出ポートを含
む圧力室に流入し、吐出ポート体積。Then, there is a problem in that the temperature of the discharged gas generated by the opening and closing action of the discharge valve in this compressor increases. In other words, in a compressor, gas is sucked in through the suction hole in the suction stroke, the suction gas is compressed in the compression process, and the discharge valve is opened from the discharge hole in the compression chamber in the discharge process to create a space between the case and the cylinder. However, when the tip of the vane that forms the piston mechanism of the rotary compressor reaches the discharge port, the compressed gas compressed in the previous compression process reaches the discharge pressure. Flows into the pressure chamber containing the discharge port, reaching the discharge port volume.
切欠体積、圧縮室体積で構成されるクリアランスボリュ
ームに流入した圧縮ガスによって圧力の低い方の後続の
圧縮室と連通してしまい、前段の圧縮室の圧力が吐出圧
力以下となってしまう。そうすると、所定の圧力を必要
とする吐出弁は圧縮ガスを完全に吐出さないうちに閉鎖
すると同時に、前段の圧縮室内のクリアランスボリュー
ム相当の高温高圧の冷媒ガスが後段の圧縮室内に流入し
、圧力と温度を上昇させ後段圧縮室のエントロピを増加
させてしまう。その結果、これ以後後段の圧縮室が等エ
ントロピ的に圧縮されたとしても吐出ガス温度は上昇す
ることとなる。これは、クリアランスボリュームからの
漏れによる圧縮ガスを再圧縮することとなるからである
。第４図は、このクリアランスボリュームからの漏れを
示す説明図である。The compressed gas flowing into the clearance volume constituted by the notch volume and the compression chamber volume communicates with the subsequent compression chamber of lower pressure, and the pressure of the preceding compression chamber becomes lower than the discharge pressure. In this case, the discharge valve that requires a predetermined pressure closes before the compressed gas is completely discharged, and at the same time, high-temperature, high-pressure refrigerant gas equivalent to the clearance volume in the compression chamber of the previous stage flows into the compression chamber of the latter stage, and the pressure This increases the temperature and entropy of the subsequent compression chamber. As a result, even if the subsequent compression chamber is isentropically compressed, the temperature of the discharged gas will rise. This is because compressed gas due to leakage from the clearance volume will be recompressed. FIG. 4 is an explanatory diagram showing leakage from this clearance volume.
次に、クリアランスリュームの漏れによる圧縮ガスの再
圧縮による吐出ガス温度の変化をＰｖ線図で示すと第５
図のようになる。つまり、第５図の斜線部により分かる
通り、吐出ガス温度はＴｄからＴｄ’へ上昇し、圧縮機
は再圧縮のよって斜線部相当の損失仕事を行なったこと
となる。Next, if the change in discharge gas temperature due to recompression of compressed gas due to clearance volume leakage is shown in the Pv diagram, the fifth
It will look like the figure. That is, as can be seen from the shaded area in FIG. 5, the discharge gas temperature rose from Td to Td', and the compressor performed loss work corresponding to the shaded area due to recompression.
以上の点より、クリアランスボリュームを低減すること
による吐出ガス温度の影響を調べると、第６図に示す様
な結果が得られた。このことから、クリアランスボリュ
ームは、吐出ガス温度を上昇させる要因となっているこ
とは明らかであり、このクリアランスボリュームを低減
することが吐出ガス湿度を下げることに有効であること
を知ることができた。Based on the above points, when the effect of reducing the clearance volume on the discharge gas temperature was investigated, the results shown in FIG. 6 were obtained. From this, it is clear that the clearance volume is a factor that increases the temperature of the discharged gas, and that reducing this clearance volume is effective in lowering the humidity of the discharged gas. .
次に、クリアランスボリュームの構成を第７図に示す。Next, FIG. 7 shows the configuration of the clearance volume.
クリアランスボリュームは前述した通り、吐出ポート体
積（Ａ）、切欠体積（Ｂ）、圧縮室体積（Ｃ）で構成さ
れており、このＡ、Ｂ、Ｃ各体積を低減させることがク
リアランスボリューム：ｌｋ憧：低減させる方法となる
。これら三つの構成要件中、吐出ポート体積と切欠体積
の占める割合が大きく、後者の切欠体積を除去した場合
、吐出ポート部の体積を低減することが最も必要であり
がっ有効である。その方法も吐出ポート長さくシリンダ
吐出ポート部の肉厚）を短かくすることが最も有効であ
るが、シリンダの外壁は圧縮機の耐圧力に対応して最小
肉厚が設定されるため、シリンダ肉厚を単純に薄くして
はシリンダの強度上の問題がある。As mentioned above, the clearance volume is composed of the discharge port volume (A), the notch volume (B), and the compression chamber volume (C), and reducing each volume of A, B, and C is the clearance volume. : This is a method of reducing Among these three constituent requirements, the discharge port volume and the notch volume account for a large proportion, and when the latter notch volume is removed, it is most necessary and effective to reduce the volume of the discharge port portion. The most effective way to do this is to shorten the length of the discharge port (and the thickness of the cylinder discharge port); If the wall thickness is simply made thinner, there will be problems with the strength of the cylinder.
これを解決する方法として、実開昭５９−１２６１９４
号記載のものが知られている。すなわち、弁シート部を
凹曲面状に形成して該弁シート部の肉厚を減少し、その
最少肉厚部に吐出孔を設けると共に。As a way to solve this problem, Utility Model Application No. 59-126194
The one listed in the number is known. That is, the valve seat part is formed into a concave curved shape to reduce the wall thickness of the valve seat part, and the discharge hole is provided in the minimum thickness part.
吐出弁を前記弁シート部の凹曲面に沿う板状に形成した
ことを特徴とする圧縮機の吐出弁に関するものである。The present invention relates to a discharge valve for a compressor, characterized in that the discharge valve is formed in a plate shape along a concave curved surface of the valve seat portion.
つまり、吐出弁形状に従ってシリンダ肉厚を削り込み、
削り込まない部分を補強リブとしての働きをさせて耐圧
力をもたせたものである。In other words, by cutting down the cylinder wall thickness according to the discharge valve shape,
The parts that are not carved out function as reinforcing ribs to withstand pressure.
しかしながら、弁シート部（弁座部）−を吐出弁形状に
削り込む方法では、切削加工による切削でしかなく、そ
の後の切削面の精度を出すための研削が困難なために、
吐出弁座面の表面粗さが大きく、吐出弁と吐出ポートの
密着性が悪くなり、その結果吐出弁が弁としての機能を
働さない可能性があるしいう欠点を有していた。また、
切削後研削を必要とするから同一品質のものを多数製造
することが困難なため、量産に適さず、また、コストも
高くつくなどの欠点を有していた。However, the method of cutting the valve seat part (valve seat part) into the shape of the discharge valve is only a cutting process, and it is difficult to perform subsequent grinding to obtain the precision of the cut surface.
This has the disadvantage that the surface roughness of the discharge valve seat surface is large, resulting in poor adhesion between the discharge valve and the discharge port, and as a result, the discharge valve may not function as a valve. Also,
Since it requires grinding after cutting, it is difficult to manufacture a large number of products of the same quality, which makes it unsuitable for mass production and has drawbacks such as high costs.
本発明の目的は、圧縮ガスの吐出ガス温度を低減するこ
とのできる回転型圧縮機を提供することにある。An object of the present invention is to provide a rotary compressor that can reduce the discharge temperature of compressed gas.
本発明は、吐出弁と、吐出弁形状にシリンダ外壁を削り
込んで形成した座面との間に、表面精度が確保された板
材を挿入することで、加工されたシリンダ面になじみ易
くさせて吐出弁の開閉の応答性をよくすることによって
、吐出ガス温度の低減を図ろうとするものである。The present invention inserts a plate material with ensured surface accuracy between the discharge valve and the seat surface formed by carving the outer wall of the cylinder into the shape of the discharge valve, so that the plate material easily conforms to the machined cylinder surface. The aim is to reduce the temperature of the discharged gas by improving the responsiveness of the opening and closing of the discharge valve.
以下、本発明の実施例について第１図、第２図および第
３図により説明する。第１図は、本発明の実施例である
回転型圧縮機の断面図、第２図はその装置のＡ−Ａ断面
図、第３図は、その装置の一部拡大分解斜視図である。Embodiments of the present invention will be described below with reference to FIGS. 1, 2, and 3. FIG. 1 is a sectional view of a rotary compressor according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of the device, and FIG. 3 is a partially enlarged exploded perspective view of the device.
図において、チャンバー２０内に収容されたシリンダ１
０の内部にはシャフト１６に圧入されたロータ１２と、
該ロータ１２の軸方向に形成された複数のスリットに挿
入されたベーン１４とが嵌入されている。ロータ１２の
回転に伴なってベーン１４がシリンダ１０の内面に密着
しながら回転し、圧縮室が大きい体積から小さい体積へ
と移動し、冷媒ガスを吸入・圧縮する構造となっている
。In the figure, a cylinder 1 housed in a chamber 20
0 has a rotor 12 press-fitted into a shaft 16,
Vanes 14 are inserted into a plurality of slits formed in the axial direction of the rotor 12 . As the rotor 12 rotates, the vanes 14 rotate while closely contacting the inner surface of the cylinder 10, and the compression chamber moves from a large volume to a small volume, thereby sucking and compressing refrigerant gas.
シリンダ１０の外周部の所定位置に溝加工をし弁座面を
形成する。そして、ここにシリンダ１０の内周面とロー
タ１２との外周面との間に形成されるポンプ室内の圧縮
室に通じる吐出ポート８を開口させている。前記弁座面
と同−若しくは略近似する形状に吐出プレート９を形成
し、前記吐出ポート８と対向する部分には吐出ポート形
状と同−若しくはそれに近い形状の開口部を設ける。こ
の吐出プレート８は、弁座面と吐出弁との間に１又は２
以上挿入し、該プレートは一方の面を硬質部材とし他方
の面を軟質部材とする二層構造にしかつ、表面精度も確
保するようにする。実際の使用にあたっては、吐出弁側
は硬質、シリンダ側は軟質とする。こうすることによっ
て、吐出プレートに弾性力を持たせて吐出弁の開閉動作
に追従させ、開閉応答性もよくするためである。この吐
出プレートを介して、前記吐出ポート９を開閉する吐出
弁４、該吐出弁４の渦動を防ぐ吐出弁ササエ２が共にシ
リンダの弁座面にボルト等の固着手段により固着されて
いる。A groove is formed at a predetermined position on the outer periphery of the cylinder 10 to form a valve seat surface. A discharge port 8 communicating with a compression chamber in the pump chamber formed between the inner circumferential surface of the cylinder 10 and the outer circumferential surface of the rotor 12 is opened here. The discharge plate 9 is formed in a shape that is the same as or approximately similar to the valve seat surface, and an opening having a shape that is the same as or close to the shape of the discharge port is provided in a portion facing the discharge port 8. This discharge plate 8 has one or two parts between the valve seat surface and the discharge valve.
By inserting the plate as described above, the plate has a two-layer structure with a hard member on one side and a soft member on the other side, and also ensures surface accuracy. In actual use, the discharge valve side is hard and the cylinder side is soft. By doing so, the discharge plate is given elastic force to follow the opening/closing operation of the discharge valve, and the opening/closing responsiveness is also improved. Through this discharge plate, a discharge valve 4 for opening and closing the discharge port 9 and a discharge valve holder 2 for preventing swirling of the discharge valve 4 are both fixed to the valve seat surface of the cylinder by fixing means such as bolts.
上記構成による回転型圧縮機において、圧縮された冷媒
ガスは、吐出圧力に達してシリンダに設けられた吐出ポ
ート８を通過し、その流体が吐出プレート６吐出弁４を
吐出弁ササエ２まで押し上げて、チャンバ２０とシリン
ダ１０との空間へ放出されることとなり、その吐出圧力
が所定の圧力以下となると、吐出プレート、吐出弁はそ
の弾性力及び負圧の作用により直ちに元の位置に復帰す
る。In the rotary compressor with the above configuration, the compressed refrigerant gas reaches a discharge pressure and passes through the discharge port 8 provided in the cylinder, and the fluid pushes up the discharge plate 6 and the discharge valve 4 to the discharge valve support 2. , is discharged into the space between the chamber 20 and the cylinder 10, and when the discharge pressure falls below a predetermined pressure, the discharge plate and discharge valve immediately return to their original positions due to their elastic force and negative pressure.
また、吐出ポート８を複数設ければ、大径の吐出ポート
が開口したものを単独で設けるよりも吐出弁、吐出プレ
ートの作動が確認のなり、また、同一の耐圧強度に対し
て吐出ポートの肉厚を小さくできる。In addition, if multiple discharge ports 8 are provided, the operation of the discharge valve and discharge plate can be confirmed more easily than if a single large-diameter discharge port is provided. Wall thickness can be reduced.
更に、吐出弁をサイドプレート２４に設けるタイプのも
のでも、本発明の実施例を同様に適用でき、また、吐出
弁を有する回転型圧縮機全般に退域させる手段であるこ
とによる。Further, the embodiments of the present invention can be similarly applied to a type in which a discharge valve is provided on the side plate 24, and the present invention is also a means for retracting all rotary compressors having a discharge valve.
以上説明したように、従来シリンダの強度を低下させず
に吐出ポートの肉厚を薄くするため、吐出弁形状に彫り
込む時に弁座面の面粗さを抑えるため、研削による表面
加工が困難であるから、吐出ポート肉厚を薄く出来ない
という問題があった。As explained above, conventionally, in order to reduce the wall thickness of the discharge port without reducing the strength of the cylinder, it was difficult to process the surface by grinding in order to suppress the roughness of the valve seat surface when carving into the shape of the discharge valve. Therefore, there was a problem in that the wall thickness of the discharge port could not be made thinner.
しかしながら、本発明によれば、吐出弁形状に；。However, according to the present invention, the discharge valve shape;
エシドミル等の切削手段により彫り込んだ後の研削は吐
出プレートを設けることで不要となり、吐出プレートの
加工精度のみを確保すれば、弁座面の面粗さを抑える必
要がない。その結果、加工性並びに組立性に優れている
。The provision of the discharge plate eliminates the need for grinding after engraving with a cutting means such as an esido mill, and there is no need to suppress the surface roughness of the valve seat surface by ensuring only the machining accuracy of the discharge plate. As a result, it has excellent workability and assemblability.
また５本発明によれば、弁座面を凹曲面状に形成する必
要がないから、クリアランスボリュームを全体として小
さくすることが出来、再圧縮される圧縮ガスも少ないか
ら損失エネルギも小さく出来るため、吐出ガス温度を低
くすることができる。Furthermore, according to the present invention, since there is no need to form the valve seat surface into a concave curved shape, the overall clearance volume can be reduced, and since there is less compressed gas to be recompressed, energy loss can also be reduced. The discharge gas temperature can be lowered.
したがって、例えばクリアランスボリュームを０．８５
から０．３（！ｌ？程度に低減することで、６℃〜１３
℃低下する効果が認められる。Therefore, for example, set the clearance volume to 0.85
By reducing the temperature from 6℃ to 13
The effect of lowering temperature is observed.
第１図は本発明の実施例を示す断面図、第２図は第１図
Ａ−Ａ断面図、第３図は本発明の実施例の一部分解斜視
図、第４図はクリアランスボリュームの漏れによる再圧
縮を示す説明図、第５図はクリアランスボリュームの影
響をＰ−ｖ線図によ−り表わした図、第６図はクリアラ
ンスボリュームの吐出ガス温度の影響を示す図、第７図
はクリアランスボリュームの構成図である。
２・・・吐出弁ササエ、４・・・吐出弁、６・・・吐出
プレート、８・・・吐出プレート、９・・・ポート、１
ｏ・・・シリンダ、１２・・・ロータ、１４・・・ベー
ン、１６・・・シャフト、２０・・・チャンバ、２４・
・・リアプレート（す第３５２１
第４図
＃５回
’Ｊｚ Ｖ＋
イノトリｆｔｖ’Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a partially exploded perspective view of an embodiment of the invention, and Fig. 4 is a leakage of clearance volume. Fig. 5 is a diagram showing the influence of the clearance volume using a P-v diagram, Fig. 6 is a diagram showing the influence of the discharge gas temperature on the clearance volume, and Fig. 7 is a diagram showing the influence of the discharge gas temperature on the clearance volume. FIG. 3 is a configuration diagram of a clearance volume. 2...Discharge valve handle, 4...Discharge valve, 6...Discharge plate, 8...Discharge plate, 9...Port, 1
o...Cylinder, 12...Rotor, 14...Vane, 16...Shaft, 20...Chamber, 24...
・・Rear plate (No. 3521 Figure 4 #5 'Jz V+ Inotori ftv'
Claims (1)
じるように穿設された孔を有する吐出ポートと、前記吐
出ポートのシリンダ外周側開口部を含むように形成され
た圧縮ガスの吐出力により開閉動作をする吐出弁とを備
えた回転型圧縮機において、上記吐出ポートと上記吐出
弁との間に、該吐出ポート開口部と対向する位置に穿設
された孔を有する吐出プレートを少なくとも１枚挿入す
るようにしたことを特徴とする回転型圧縮機。1. A discharge port having a hole drilled at a predetermined position on the outer peripheral surface of the cylinder so as to communicate with the inner peripheral surface of the cylinder, and an opening on the cylinder outer peripheral side of the discharge port formed to include an opening on the cylinder outer peripheral side. Opening/closing operation is performed by the discharge force of compressed gas. In a rotary compressor equipped with a discharge valve, at least one discharge plate having a hole formed at a position facing the discharge port opening is inserted between the discharge port and the discharge valve. A rotary compressor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28096685A JPS62139996A (en) | 1985-12-16 | 1985-12-16 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28096685A JPS62139996A (en) | 1985-12-16 | 1985-12-16 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62139996A true JPS62139996A (en) | 1987-06-23 |
Family
ID=17632369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28096685A Pending JPS62139996A (en) | 1985-12-16 | 1985-12-16 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62139996A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2656659A1 (en) * | 1989-12-28 | 1991-07-05 | Sanyo Electric Co | Compressor with volutes with discharge valves |
| KR100390782B1 (en) * | 2001-01-31 | 2003-07-10 | 주식회사 엘지이아이 | Hermetic rotary compressor |
| CN103591027A (en) * | 2013-11-18 | 2014-02-19 | 广东美芝制冷设备有限公司 | Discharge valve plate for compressor and compressor provided with same |
| CN104989627A (en) * | 2015-07-23 | 2015-10-21 | 珠海凌达压缩机有限公司 | Compressor and flapper valve block thereof |
-
1985
- 1985-12-16 JP JP28096685A patent/JPS62139996A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2656659A1 (en) * | 1989-12-28 | 1991-07-05 | Sanyo Electric Co | Compressor with volutes with discharge valves |
| KR100390782B1 (en) * | 2001-01-31 | 2003-07-10 | 주식회사 엘지이아이 | Hermetic rotary compressor |
| CN103591027A (en) * | 2013-11-18 | 2014-02-19 | 广东美芝制冷设备有限公司 | Discharge valve plate for compressor and compressor provided with same |
| CN104989627A (en) * | 2015-07-23 | 2015-10-21 | 珠海凌达压缩机有限公司 | Compressor and flapper valve block thereof |
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