JPH04358772A - Valve device for reciprocating type compressor - Google Patents
Valve device for reciprocating type compressorInfo
- Publication number
- JPH04358772A JPH04358772A JP3131190A JP13119091A JPH04358772A JP H04358772 A JPH04358772 A JP H04358772A JP 3131190 A JP3131190 A JP 3131190A JP 13119091 A JP13119091 A JP 13119091A JP H04358772 A JPH04358772 A JP H04358772A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- cylindrical member
- bottomed cylindrical
- port
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052742 iron Inorganic materials 0.000 abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 14
- 210000000078 claw Anatomy 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000004043 responsiveness Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
- F04B27/0878—Pistons
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、車両空調用に供して好
適な往復動式圧縮機の弁装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device for a reciprocating compressor suitable for use in vehicle air conditioning.
【０００２】0002
【従来の技術】従来の往復動式圧縮機の弁装置として、
リード弁が用いられていた。図８に示すように、吐出弁
の場合は、冷媒が圧縮されるボア１００と吐出室１０３
とを仕切る弁板１０５にポート１０６を形成するととも
に、弁板１０５に板ばね状のリード弁１０７およびリテ
ーナ１０９を当てがったものが知られている。この弁装
置では、常時閉弁状態であり、ボア１００と吐出室１０
３との差圧が開弁圧以上になると、弁１０７はポート１
０６から離れて開弁するように設定されている。開弁す
ると、ボア１００内で圧縮された冷媒はポート１０６を
通り吐出室１０３に吐出される。なお、弁１０７の開弁
度はリテーナ１０９により規制される。[Prior Art] As a conventional valve device for a reciprocating compressor,
A reed valve was used. As shown in FIG. 8, in the case of a discharge valve, there is a bore 100 in which the refrigerant is compressed and a discharge chamber 103.
It is known that a port 106 is formed in a valve plate 105 that partitions the valve plate 105, and a reed valve 107 and a retainer 109 in the form of a leaf spring are attached to the valve plate 105. In this valve device, the valve is always closed, and the bore 100 and the discharge chamber 10
3, the valve 107 closes port 1.
The valve is set to open away from 06. When the valve is opened, the refrigerant compressed within the bore 100 is discharged into the discharge chamber 103 through the port 106. Note that the degree of opening of the valve 107 is regulated by the retainer 109.
【０００３】0003
【発明が解決しようとする課題】ところで、上記一般的
な弁装置は、前述したように、常時閉弁状態であり、ボ
ア１００と吐出室１０３との差圧が弁１０７の所定の開
弁圧を越えると、弁１０７は始めて開弁する。すなわち
、弁１０７は、ボア１００と吐出室１０３との差圧によ
る弁１０７を開けようとする力が、弁１０７の弾性力よ
りも大きくなったとき始めて開弁する。このため、吐出
の際に上記弾性力による抵抗が大きいことから、冷媒は
過圧縮となり動力損失を許容しなければならなかった。[Problems to be Solved by the Invention] By the way, as mentioned above, the above-mentioned general valve device is in a normally closed state, and the differential pressure between the bore 100 and the discharge chamber 103 is equal to the predetermined opening pressure of the valve 107. When the value exceeds 100, the valve 107 opens for the first time. That is, the valve 107 opens only when the force that attempts to open the valve 107 due to the pressure difference between the bore 100 and the discharge chamber 103 becomes greater than the elastic force of the valve 107. For this reason, since the resistance due to the elastic force is large during discharge, the refrigerant becomes overcompressed and power loss must be tolerated.
【０００４】また、弁１０７は上述のように開弁の際の
応答性が悪く、吐出圧の脈動が生じやすい。これらの不
具合を避けるべく、弁板に弁室を形成し、この弁室内に
ポートを挟む領域の差圧のみに応動して該ポートを開閉
する弁体を遊嵌する手段を採用することもできる。しか
し、このようなフロート弁形式の弁装置では、弁体と弁
体の外周面を囲む弁室の内壁面との間にある程度の間隙
を確保して、ポートから吐出又は吸入された流体が通過
する流体通路とする必要がある。このため、弁室内にお
ける弁体の無用な遊動が誘発され、弁室の内壁面が損傷
するという不都合が生じる場合がある。Further, as mentioned above, the valve 107 has poor responsiveness when opening, and pulsations in the discharge pressure are likely to occur. In order to avoid these problems, it is also possible to adopt a method in which a valve chamber is formed in the valve plate, and a valve body that opens and closes the port in response to only the differential pressure in the area sandwiching the port is loosely fitted into the valve chamber. . However, in such a float valve type valve device, a certain amount of clearance is secured between the valve body and the inner wall surface of the valve chamber surrounding the outer peripheral surface of the valve body, so that the fluid discharged or sucked in from the port can pass through. It is necessary to provide a fluid passageway that allows for This may induce unnecessary movement of the valve body within the valve chamber, which may cause damage to the inner wall surface of the valve chamber.
【０００５】とくに、圧縮機の軽量化を図るために上記
弁体１０５をアルミニウム系金属で構成した場合、弁室
内壁面の損傷が激しく、圧縮機の耐久性を損なうことが
あった。本発明は、動力損失及び吐出脈動を極力低減し
、しかも上記フロート弁形式の弁装置における弁体の無
用な遊動による弁室内壁面の損傷を極力防止しつつ圧縮
機の軽量化にも貢献できる弁装置を創出することを解決
すべき技術課題とするものである。In particular, when the valve body 105 is made of aluminum-based metal in order to reduce the weight of the compressor, the inner wall surface of the valve chamber is severely damaged, which may impair the durability of the compressor. The present invention is a valve that can reduce power loss and discharge pulsation as much as possible, and also contribute to reducing the weight of a compressor while minimizing damage to the wall surface of the valve chamber due to unnecessary movement of the valve body in the above-mentioned float valve type valve device. The technical problem to be solved is to create a device.
【０００６】[0006]
【課題を解決するための手段】本発明の弁装置は、往復
動式圧縮機の基体部に設けられる吸入弁及び吐出弁であ
って、吸入又は吐出ポートが開口された平坦な弁座と、
該弁座から該ポートを囲包して垂直に延在するガイド壁
と、該弁座に離隔対向するリテーナとを含んだ弁室を形
成し、該弁室内に該ポートを挟む領域の差圧に応じて該
ポートを開閉する平板状弁体を遊装するとともに、前記
ガイド壁が、前記弁座及び前記リテーナの一方を含んだ
有底筒状部材により構成されて前記基体部に結合され、
かつ前記平板状弁体と共に鉄系金属で形成されているこ
とを特徴とする。[Means for Solving the Problems] The valve device of the present invention is a suction valve and a discharge valve provided in a base portion of a reciprocating compressor, the valve device having a flat valve seat with an open suction or discharge port;
A valve chamber is formed that includes a guide wall that extends vertically from the valve seat to surround the port, and a retainer that faces the valve seat and is spaced apart from the valve seat. a flat plate-shaped valve body that opens and closes the port in accordance with the above is freely mounted, and the guide wall is constituted by a bottomed cylindrical member including one of the valve seat and the retainer and is coupled to the base portion,
The valve body is characterized in that it is made of iron-based metal together with the flat valve body.
【０００７】[0007]
【作用】本発明の弁装置においては、ポートを挟む領域
において差圧が生じると、その差圧に応じて平板状弁体
は弁室内で移動し、これにより弁体が弁座に着座してポ
ートを閉じたり、弁体が弁座から離れてポートを開き、
リテーナに当たったりする。[Operation] In the valve device of the present invention, when a pressure difference occurs in the region between the ports, the flat valve body moves within the valve chamber in accordance with the pressure difference, and as a result, the valve body is seated on the valve seat. Close the port or open the port by moving the valve body away from the valve seat.
It may hit the retainer.
【０００８】このように、弁体がポートを挟む領域の差
圧のみに応じてポートを開閉するので、開弁の際の応答
性が向上し、冷媒の過圧縮による動力損失や吐出脈動を
低減できる。また、車両空調用圧縮機は軽量化のためア
ルミニウム系合金が多用されているが、本発明では上記
弁体が鉄系金属で形成され、かつ上記弁座及び上記リテ
ーナの一方と上記ガイド壁とが、前記弁装置が装設され
た基体部に結合され鉄系金属で形成された有底筒状部材
により構成されている。すなわち、少なくとも弁体の無
用な遊動により傷付けられやすいガイド壁が、弁体と同
質材料で形成された有底筒状部材の内周面により構成さ
れている。このため、上記ガイド壁は弁体と同程度の強
度をもち、ガイド壁における弁体による攻撃的損傷を防
ぐことができる。また、本発明の弁装置が装設された基
体部の大部分が有底筒状部材により覆われているので、
基体部は弁体との接触面積が小さく、弁体による損傷が
少ない。[0008] In this way, since the valve body opens and closes the port only in accordance with the differential pressure in the region between the ports, responsiveness when opening the valve is improved, and power loss and discharge pulsation due to overcompression of the refrigerant are reduced. can. In addition, although aluminum-based alloys are often used in vehicle air conditioning compressors to reduce weight, in the present invention, the valve body is formed of iron-based metal, and one of the valve seat and the retainer and the guide wall are connected to each other. The valve device is constructed of a bottomed cylindrical member made of iron-based metal and connected to a base portion on which the valve device is installed. That is, at least the guide wall, which is easily damaged by unnecessary movement of the valve body, is constituted by the inner circumferential surface of the bottomed cylindrical member made of the same material as the valve body. Therefore, the guide wall has a strength comparable to that of the valve body, and can prevent aggressive damage to the guide wall by the valve body. Furthermore, since most of the base portion on which the valve device of the present invention is installed is covered by the bottomed cylindrical member,
The base portion has a small contact area with the valve body, and is less likely to be damaged by the valve body.
【０００９】[0009]
【実施例】以下、本発明を具体化した実施例を図面を参
照しつつ説明する。
（実施例１）この斜板式圧縮機は、図１に示すように、
一対のシリンダブロック１、２が前後に対設されて結合
部分に帰還冷媒の吸入口３と連通する斜板室４を形成し
ている。各シリンダブロック１、２はその両端をそれぞ
れアルミニウム系金属の弁板５、６を介してフロントハ
ウジング７及びリアハウジング８により閉塞されている
。フロントハウジング７及びリアハウジング８には、共
に中央部に吐出室１１、１２が形成されている。Embodiments Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. (Example 1) As shown in FIG. 1, this swash plate compressor has the following features:
A pair of cylinder blocks 1 and 2 are arranged opposite each other in the front and rear, and a swash plate chamber 4 communicating with a return refrigerant suction port 3 is formed at the joint portion. Both ends of each cylinder block 1, 2 are closed by a front housing 7 and a rear housing 8 via valve plates 5, 6 made of aluminum metal, respectively. Discharge chambers 11 and 12 are formed in the center of both the front housing 7 and the rear housing 8.
【００１０】各シリンダブロック１、２の共通中心軸孔
には各シリンダブロック１、２との間にラジアル軸受１
４、１５及びゴムシール１６、１７を介して駆動軸１８
が挿嵌されており、この駆動軸１８はフロント側の弁板
５の中心孔５ａを貫通しラジアル軸受１９及び軸封装置
２０を介してフロントハウジング７に支承されている。
駆動軸１８には斜板室４内を回転可能に斜板２３が固着
されており、この斜板２３はスラスト軸受２１、２２を
介して各シリンダブロック１、２に支承されている。ま
た、各シリンダブロック１、２には駆動軸１８周りに平
行状に配列した前後複数対のボア１ａ、２ａが形成され
、各ボア１ａ、２ａには斜板２３に一対のシュー２４、
２４を介して係留され本発明の基体部をなす両頭形のピ
ストン２５が直動自在に嵌入されている。A radial bearing 1 is installed between each cylinder block 1 and 2 in the common center shaft hole of each cylinder block 1 and 2.
4, 15 and the drive shaft 18 via rubber seals 16, 17.
The drive shaft 18 passes through the center hole 5a of the front valve plate 5 and is supported by the front housing 7 via a radial bearing 19 and a shaft sealing device 20. A swash plate 23 is fixed to the drive shaft 18 so as to be rotatable within the swash plate chamber 4, and this swash plate 23 is supported by each cylinder block 1, 2 via thrust bearings 21, 22. Further, each cylinder block 1, 2 is formed with a plurality of pairs of front and rear bores 1a, 2a arranged in parallel around the drive shaft 18, and each bore 1a, 2a has a pair of shoes 24 on a swash plate 23;
A double-headed piston 25, which is moored via a piston 24 and forms a base portion of the present invention, is fitted so as to be movable in a linear manner.
【００１１】ピストン２５はアルミニウム系金属で形成
され、両頭部分にそれぞれ斜板室４と連通する中空部２
５ａが形成されている。ピストン２５のヘッド部分には
、その部分拡大図を図２に示すように、刳孔２５ｂが形
成され、この刳孔２５ｂに鉄系金属よりなる有底筒状部
材２６（図３に斜視図を示す）が嵌合固定されている。
そして、刳孔２５ｂの底部２５ｄが吸入ポート２５ｃが
開口され垂直に延在するリング状の平坦な弁座をなす。
有底筒状部材２６の底部には、中央孔２６ａと、周縁部
分の４個の抉り孔２６ｂとが形成され、残りの底部に相
当する爪部２６ｃが弁座（２５ｄ）に離隔対向するリテ
ーナをなす。また、有底筒状部材２６の側部がガイド壁
２６ｄをなす。なお、有底筒状部材２６は、図３に示す
ように、外周側面に刳孔２５ｂに形成された凹部に嵌合
する突部２６ｅが全周にわたって形成され、かつ縮径可
能に一箇所で割れている。したがって、有底筒状部材２
６を縮径させた状態で刳孔２５ｂに挿入し、有底筒状部
材２６をその復元力を利用して刳孔２５ｂに嵌合固定し
ている。このようにして弁座をなす刳孔２５ｂの底部２
５ｄ、ガイド壁２６ｄ及びリテーナをなす爪部２６ｃを
含んで囲包された弁室２５ｅが形成されている。弁室２
５ｅ内には、鉄系金属よりなり円盤形状を有する平板状
弁体２７、２７が遊嵌されている。The piston 25 is made of aluminum-based metal, and has hollow portions 2 at both ends that communicate with the swash plate chamber 4.
5a is formed. A hole 25b is formed in the head portion of the piston 25, as shown in a partially enlarged view in FIG. 2, and a bottomed cylindrical member 26 (a perspective view is shown in FIG. ) are fitted and fixed. The bottom portion 25d of the borehole 25b forms a flat ring-shaped valve seat with a vertically extending suction port 25c. A central hole 26a and four bored holes 26b on the periphery are formed at the bottom of the bottomed cylindrical member 26, and a claw portion 26c corresponding to the remaining bottom is a retainer that faces the valve seat (25d) at a distance. to do. Further, the side portion of the bottomed cylindrical member 26 forms a guide wall 26d. In addition, as shown in FIG. 3, the bottomed cylindrical member 26 has a protrusion 26e that fits into the recess formed in the hollow hole 25b formed on the outer peripheral side surface over the entire circumference, and a protrusion 26e that fits into the recess formed in the hollow hole 25b. cracked. Therefore, the bottomed cylindrical member 2
6 is inserted into the hollow hole 25b in a reduced diameter state, and the bottomed cylindrical member 26 is fitted and fixed into the hollow hole 25b using its restoring force. The bottom 2 of the hole 25b that forms the valve seat in this way
5d, a guide wall 26d, and a claw portion 26c forming a retainer, forming an enclosed valve chamber 25e. Valve chamber 2
Flat plate-shaped valve bodies 27, 27 made of iron-based metal and having a disc shape are loosely fitted into the interior of the valve body 5e.
【００１２】各弁板５、６には、各ボア１ａ、２ａとの
間にリテーナ一体ガスケット２８、２９に開度を制限さ
れた吐出弁３０、３１を介して吐出室１１、１２と連通
する吐出ポート５ｂ、６ｂが形成されている。この斜板
式圧縮機では、図示しない冷凍回路より吸入口３を介し
て帰還冷媒が斜板室４に導入され、斜板室４内の帰還冷
媒はピストン２５の中空部２５ａに導かれる。そして、
駆動軸１８の回転により斜板２３を介してピストン２５
が各ボア１ａ、２ａ内を往復動し、ボア１ａ、２ａの容
積拡大による吸入行程、ボア１ａ、２ａの容積縮小によ
る圧縮行程が交互に行われる。ボア１ａ、２ａの容積拡
大による吸入行程時、ボア１ａ、２ａ内が減圧されるの
で、ボア１ａ、２ａと中空部２５ａとの間で差圧が生じ
る。このため、弁体２７はリテーナ２６ｃに当たって吸
入ポート２５ｃが開き、ピストン２５の中空部２５ａ内
の帰還冷媒は容積拡大途上の各ボア１ａ、２ａ内に吸入
される。この後、ボア１ａ、２ａが容積縮小してボア１
ａ、２ａ内が増圧されるので、弁体２７は弁座２５ｄに
着座して吸入ポート２５ｃを閉じる。そして、容積縮小
途上の各ボア１ａ、２ａから圧縮冷媒がそれぞれ弁板５
、６の吐出ポート５ｃ、６ｃを介して前後の吐出室１１
、１２に吐出される。そして、フロント側の吐出室１１
内の圧縮冷媒は図示しない吐出通路を経てリア側の吐出
室１２に集められ、リア側の吐出室１２内の圧縮冷媒は
図示しない吐出口から再び冷凍回路に循環される。Each of the valve plates 5 and 6 communicates with the discharge chambers 11 and 12 through discharge valves 30 and 31 whose openings are limited by retainer-integrated gaskets 28 and 29 between the respective bores 1a and 2a. Discharge ports 5b and 6b are formed. In this swash plate compressor, return refrigerant is introduced into the swash plate chamber 4 from a refrigeration circuit (not shown) through the suction port 3, and the return refrigerant in the swash plate chamber 4 is guided to the hollow portion 25a of the piston 25. and,
The rotation of the drive shaft 18 causes the piston 25 to move through the swash plate 23.
reciprocates within each bore 1a, 2a, and a suction stroke by expanding the volume of the bores 1a, 2a and a compression stroke by reducing the volume of the bores 1a, 2a are performed alternately. During the suction stroke due to the volume expansion of the bores 1a, 2a, the pressure inside the bores 1a, 2a is reduced, so a pressure difference is generated between the bores 1a, 2a and the hollow portion 25a. Therefore, the valve body 27 hits the retainer 26c to open the suction port 25c, and the return refrigerant in the hollow portion 25a of the piston 25 is sucked into each of the bores 1a and 2a, which are in the process of expanding in volume. After this, the volumes of the bores 1a and 2a are reduced and the bore 1
Since the pressure inside a and 2a is increased, the valve body 27 seats on the valve seat 25d and closes the suction port 25c. Then, compressed refrigerant flows from each of the bores 1a and 2a, which are in the process of reducing their volume, to the valve plate 5.
, 6 through the discharge ports 5c, 6c of the front and rear discharge chambers 11.
, 12. And the front side discharge chamber 11
The compressed refrigerant in the rear discharge chamber 12 is collected through a discharge passage (not shown) into the rear discharge chamber 12, and the compressed refrigerant in the rear discharge chamber 12 is circulated back to the refrigeration circuit from a discharge port (not shown).
【００１３】ここで、この斜板式圧縮機では、弁体２７
が鉄系金属で形成され、かつリテーナをなす爪部２６ｃ
とガイド壁２６ｄとが、鉄系金属で形成された有底筒状
部材２６により構成されている。すなわち、少なくとも
弁体２７の無用な遊動により傷付けられやすいガイド壁
２６ｄが、弁体２７と同質材料で形成された有底筒状部
材２６ｃにより構成されている。このため、上記ガイド
壁２６ｄは弁体２７と同程度の強度をもち、ガイド壁２
６ｄにおける弁体２７による攻撃的損傷を防ぐことがで
きる。また、リテーナをなす爪部２６ｃが有底筒状部材
２６としてガイド壁２６ｄと一体的に形成されているの
で、その構造的な強度が高く、弁体２７の衝突による破
損を防止するのに有利である。Here, in this swash plate compressor, the valve body 27
is formed of iron-based metal and serves as a retainer.
and the guide wall 26d are constituted by a bottomed cylindrical member 26 made of iron-based metal. That is, at least the guide wall 26d, which is easily damaged by unnecessary movement of the valve body 27, is constituted by the bottomed cylindrical member 26c made of the same material as the valve body 27. Therefore, the guide wall 26d has the same strength as the valve body 27, and the guide wall 26d has the same strength as the valve body 27.
Aggressive damage caused by the valve body 27 at 6d can be prevented. Further, since the claw portion 26c forming the retainer is formed integrally with the guide wall 26d as the bottomed cylindrical member 26, its structural strength is high, which is advantageous in preventing damage due to collision of the valve body 27. It is.
【００１４】さらに、本発明の基体部をなすピストン２
５は、刳孔２５ｂの底部を除く部分が有底筒状部材２６
により覆われているので、その分弁体２７との接触面積
が小さく、弁体２７による損傷が少ない。このため、ピ
ストン２５がアルミニウム系金属で形成されていても、
その耐久性を問題とすることなく、圧縮機の軽量化に貢
献できる。Furthermore, the piston 2 forming the base portion of the present invention
5 is a bottomed cylindrical member 26 except for the bottom of the hollow hole 25b.
Since the contact area with the valve body 27 is correspondingly small, damage caused by the valve body 27 is reduced. Therefore, even if the piston 25 is made of aluminum metal,
It can contribute to reducing the weight of the compressor without making its durability a problem.
【００１５】さらに、上述したように、弁体２７はポー
ト２５ｂを挟む領域の差圧のみに応じて往復動するので
、開弁の際の応答性が向上し、冷媒の過圧縮を低減又は
回避するのに有利であり、圧縮効率の向上を図ることが
可能となる。また、吐出圧の脈動を低減するのにも有利
となる。
（実施例２）上記斜板式圧縮機において弁板５、６に本
発明の弁装置を適用した例を示す。Furthermore, as described above, since the valve body 27 reciprocates only in response to the differential pressure in the region between the ports 25b, the responsiveness when opening the valve is improved, and overcompression of the refrigerant is reduced or avoided. This is advantageous in that it is possible to improve compression efficiency. It is also advantageous to reduce pulsations in the discharge pressure. (Embodiment 2) An example in which the valve device of the present invention is applied to the valve plates 5 and 6 in the above-mentioned swash plate compressor will be shown.
【００１６】図４の部分断面図に示すように、本発明の
基体部をなす弁板５には吐出室１１側から刳孔５ｂが形
成され、この刳孔５ｂに図５の斜視図に示す有底筒状部
材２６が嵌合固定されている。本実施例２の弁装置では
、刳孔５ｂの底部５ｄが吐出ポートをなす貫通孔５ｃが
開口され垂直に延在するリング状の平坦な弁座をなし、
有底筒状部材２６の側部がガイド壁２６ｄをなし、有底
筒状部材２６の底部の爪部２６ｃが弁座（５ｄ）に離隔
対向するリテーナをなしている。このようにして、弁座
をなす刳孔５ｂの底部５ｄ、ガイド壁２６ｄ及びリテー
ナをなす爪部２６ｃを含んで囲包された弁室５ｅが形成
されている。有底筒状部材２６は、底部側の外周側面に
周方向に一列並んだ多数の小孔２６ｆが形成され、刳孔
５ｂに圧入により嵌合固定されている。なお、小孔２６
ｆ及び小孔２６ｆから底面側の部分は吐出室１１に露出
している。As shown in the partial sectional view of FIG. 4, a hole 5b is formed from the discharge chamber 11 side in the valve plate 5 forming the base portion of the present invention, and a hole 5b is formed in the hole 5b as shown in the perspective view of FIG. A bottomed cylindrical member 26 is fitted and fixed. In the valve device of the second embodiment, the bottom 5d of the hollow hole 5b forms a ring-shaped flat valve seat that extends vertically and has a through hole 5c that serves as a discharge port.
A side portion of the bottomed cylindrical member 26 forms a guide wall 26d, and a claw portion 26c at the bottom of the bottomed cylindrical member 26 forms a retainer that faces the valve seat (5d) at a distance. In this way, a valve chamber 5e is formed which is surrounded by the bottom 5d of the borehole 5b forming a valve seat, the guide wall 26d, and the claw portion 26c forming a retainer. The bottomed cylindrical member 26 has a large number of small holes 26f arranged in a row in the circumferential direction on the outer peripheral side surface of the bottom side, and is press-fitted and fixed into the hollow hole 5b. In addition, the small hole 26
A portion on the bottom side from the small hole 26f and the small hole 26f is exposed to the discharge chamber 11.
【００１７】本実施例２の弁装置は、上記実施例の作用
、効果に加えて、小孔２６ｆが油分離をするという作用
ももっている。また本実施例２と前述の本実施例１とを
並用して、ピストン２５と弁板５、６に有底筒状部材２
６、弁体２７を設けてもよい。
（実施例３）また、図６の部分断面図に示すように、本
発明の基体部をなす弁板５にボア１ａ側から刳孔５ｂを
形成し、この刳孔５ｂに図７の斜視図に示す有底筒状部
材２６が嵌合固定されている。この弁装置では、有底筒
状部材２６の底部２６ｇが吐出ポートをなす中央孔２６
ａが開口され垂直に延在するリング状の平坦な弁座をな
し、有底筒状部材２６の側部がガイド壁２６ｄをなし、
刳孔５ｂの底部５ｄが弁座（２６ｇ）に離隔対向するリ
テーナをなしている。このようにして、弁座をなす有底
筒状部材の底部２６ｇ、ガイド壁２６ｄ及びリテーナを
なす刳孔５ｂの底部５ｄを含んで囲包された弁室５ｅが
形成されている。有底筒状部材２６は、底部２６ｇに上
記吐出ポートをなす中央孔２６ａだけが形成され、底部
２６ｇから離れた外周側面に周方向に三列並んだ多数の
小孔２６ｆが形成されている。また、弁体５には小孔２
６ｆからの冷媒を吐出室１１に案内する環状通路５ｆ、
及び案内通路５ｇが形成されている。この実施例３の弁
装置も上記実施例２と同様の作用、効果をもっている。In addition to the functions and effects of the above-described embodiments, the valve device of the second embodiment also has the effect that the small hole 26f performs oil separation. Further, by using the second embodiment and the first embodiment described above, the piston 25 and the valve plates 5 and 6 are provided with a bottomed cylindrical member.
6. A valve body 27 may be provided. (Embodiment 3) Furthermore, as shown in the partial sectional view of FIG. 6, a hole 5b is formed in the valve plate 5 forming the base portion of the present invention from the bore 1a side, and the hole 5b is provided with a hole 5b as shown in the perspective view of FIG. A bottomed cylindrical member 26 shown in is fitted and fixed. In this valve device, the bottom 26g of the bottomed cylindrical member 26 is connected to the central hole 26 which forms the discharge port.
a forms a ring-shaped flat valve seat that is opened and extends vertically, and a side portion of the bottomed cylindrical member 26 forms a guide wall 26d;
The bottom 5d of the borehole 5b forms a retainer that faces the valve seat (26g) at a distance. In this way, a valve chamber 5e is formed which is surrounded by the bottom 26g of the bottomed cylindrical member forming the valve seat, the guide wall 26d, and the bottom 5d of the hollow hole 5b forming the retainer. The bottomed cylindrical member 26 has only a central hole 26a forming the above-mentioned discharge port formed in the bottom 26g, and a large number of small holes 26f arranged in three rows in the circumferential direction on the outer circumferential side away from the bottom 26g. In addition, the valve body 5 has a small hole 2.
an annular passage 5f that guides the refrigerant from 6f to the discharge chamber 11;
and a guide passage 5g are formed. The valve device of this third embodiment also has the same functions and effects as those of the second embodiment.
【００１８】[0018]
【発明の効果】以上詳述したように、本発明の往復動式
圧縮機の弁装置では、平板状弁体の開弁の際の応答性が
向上するので、冷媒の過圧縮、吐出圧の脈動を低減する
ことができる。また、弁体の無用な遊動により傷付けら
れやすいガイド壁が、弁体と同様に鉄系金属で形成され
た有底筒状部材により構成されているので、ガイド壁に
おける弁体による攻撃的損傷を防ぐことができ、耐久性
が向上する。さらに、本発明の弁装置が装設された基体
部は、その大部分が有底筒状部材により覆われており、
弁体による損傷が少ないので、この基体部をアルミニウ
ム系金属で形成しても耐久性に問題がなく、圧縮機の軽
量化に有利である。Effects of the Invention As described in detail above, in the valve device for a reciprocating compressor of the present invention, the responsiveness when opening the flat valve body is improved, thereby preventing overcompression of the refrigerant and reducing the discharge pressure. Pulsation can be reduced. In addition, since the guide wall, which is easily damaged by unnecessary movement of the valve body, is made of a bottomed cylindrical member made of iron-based metal like the valve body, aggressive damage to the guide wall by the valve body is avoided. This can be prevented and durability can be improved. Furthermore, most of the base portion on which the valve device of the present invention is installed is covered with a bottomed cylindrical member,
Since there is little damage caused by the valve body, there is no problem in durability even if the base portion is made of aluminum-based metal, which is advantageous in reducing the weight of the compressor.
【図１】実施例１にかかる斜板式圧縮機の縦断面図であ
る。FIG. 1 is a longitudinal cross-sectional view of a swash plate compressor according to a first embodiment.
【図２】実施例１にかかるピストンヘッド部の部分断面
図である。FIG. 2 is a partial cross-sectional view of a piston head portion according to Example 1.
【図３】実施例１にかかる有底筒状部材の斜視図である
。FIG. 3 is a perspective view of the bottomed cylindrical member according to the first embodiment.
【図４】実施例２にかかる弁板の部分断面図である。FIG. 4 is a partial cross-sectional view of a valve plate according to Example 2.
【図５】実施例２にかかる有底筒状部材の斜視図である
。FIG. 5 is a perspective view of a bottomed cylindrical member according to a second embodiment.
【図６】実施例３にかかる弁板の部分断面図である。FIG. 6 is a partial cross-sectional view of a valve plate according to Example 3.
【図７】実施例３にかかる有底筒状部材の斜視図である
。7 is a perspective view of a bottomed cylindrical member according to Example 3. FIG.
【図８】従来装置にかかる断面図である。FIG. 8 is a sectional view of a conventional device.
２５ｂ、５ｂは刳孔、２５ｃは吸入ポート、５ｃは吐出
ポート、２６ａは吐出ポートをなす貫通孔、２５ｄ、５
ｄは刳孔の底部、２６ｄはガイド壁、２６ｃはリテーナ
をなす爪部、２５ｅ、５ｅは弁室、２６は有底筒状部材
、２７は平板状弁体を示す。25b, 5b are hollow holes, 25c is a suction port, 5c is a discharge port, 26a is a through hole forming a discharge port, 25d, 5
d is the bottom of the borehole, 26d is a guide wall, 26c is a retainer claw, 25e and 5e are valve chambers, 26 is a bottomed cylindrical member, and 27 is a flat valve body.
Claims (1)
吸入弁及び吐出弁であって、吸入又は吐出ポートが開口
された平坦な弁座と、該弁座から該ポートを囲包して垂
直に延在するガイド壁と、該弁座に離隔対向するリテー
ナとを含んだ弁室を形成し、該弁室内に該ポートを挟む
領域の差圧に応じて該ポートを開閉する平板状弁体を遊
装するとともに、前記ガイド壁は、前記弁座及び前記リ
テーナの一方を含んだ有底筒状部材により構成されて前
記基体部に結合され、かつ前記平板状弁体と共に鉄系金
属で形成されていることを特徴とする往復動式圧縮機の
弁装置。1. A suction valve and a discharge valve provided in the base of a reciprocating compressor, comprising a flat valve seat with an open suction or discharge port, and a flat valve seat that surrounds the port from the valve seat. A flat valve that forms a valve chamber including a vertically extending guide wall and a retainer spaced apart from and opposed to the valve seat, and opens and closes the port according to the differential pressure in a region sandwiching the port within the valve chamber. The guide wall is configured of a bottomed cylindrical member including one of the valve seat and the retainer, and is coupled to the base portion, and is made of ferrous metal together with the flat valve body. A valve device for a reciprocating compressor, characterized in that:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3131190A JPH04358772A (en) | 1991-06-03 | 1991-06-03 | Valve device for reciprocating type compressor |
| KR1019920007766A KR920021873A (en) | 1991-05-10 | 1992-05-08 | Discharge valve device of reciprocating compressor |
| PCT/JP1992/000600 WO1992020919A1 (en) | 1991-05-10 | 1992-05-11 | Reciprocatory piston type compressor with valve assemblies having enhanced pressure response characteristics |
| EP92909986A EP0538493A1 (en) | 1991-05-10 | 1992-05-11 | Reciprocatory piston type compressor with valve assemblies having enhanced pressure response characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3131190A JPH04358772A (en) | 1991-06-03 | 1991-06-03 | Valve device for reciprocating type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04358772A true JPH04358772A (en) | 1992-12-11 |
Family
ID=15052127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3131190A Pending JPH04358772A (en) | 1991-05-10 | 1991-06-03 | Valve device for reciprocating type compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04358772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089866C (en) * | 1998-01-21 | 2002-08-28 | 东芝株式会社 | Enclosed compressor |
| KR100378819B1 (en) * | 2000-12-01 | 2003-04-07 | 엘지전자 주식회사 | Apparatus for suction valve of compressor |
-
1991
- 1991-06-03 JP JP3131190A patent/JPH04358772A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089866C (en) * | 1998-01-21 | 2002-08-28 | 东芝株式会社 | Enclosed compressor |
| KR100378819B1 (en) * | 2000-12-01 | 2003-04-07 | 엘지전자 주식회사 | Apparatus for suction valve of compressor |
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