JPH0566291U - Compressor - Google Patents
CompressorInfo
- Publication number
- JPH0566291U JPH0566291U JP587692U JP587692U JPH0566291U JP H0566291 U JPH0566291 U JP H0566291U JP 587692 U JP587692 U JP 587692U JP 587692 U JP587692 U JP 587692U JP H0566291 U JPH0566291 U JP H0566291U
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- Prior art keywords
- release
- valve
- valve seat
- compression chamber
- during
- Prior art date
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Abstract
(57)【要約】
【目的】この考案は、レリ−ス弁が弁座との接離を繰り
返して早期の摩耗するのを防止した圧縮機を提供するこ
とを目的とする。
【構成】密閉ケ−ス２１と、この密閉ケ−スに設けられ
内部に流体を圧縮する圧縮室３３が形成された圧縮機構
と、一端を上記圧縮室に連通させて形成されレリ−ス運
転時に圧縮室の流体の一部を逃がすためのレリ−スポ−
ト４２と、このレリ−スポ−トの他端が開口した弁座４
３を有しノ−マル運転時には上記レリ−スポ−トの他端
を閉塞し、レリ−ス運転時には開放するレリ−ス弁４７
とを具備し、このレリ−ス弁は、レリ−ス運転時に上記
弁座に接触しないよう弾性部材によって湾曲形成されて
いることを特徴とする。
(57) [Summary] [Object] The present invention aims to provide a compressor in which a release valve is prevented from being worn at an early stage due to repeated contact and separation with a valve seat. [Structure] A hermetic case 21, a compression mechanism provided in the hermetic case, in which a compression chamber 33 for compressing a fluid is formed, and a release operation formed by communicating one end with the compression chamber. Sometimes a relief spout for letting out part of the fluid in the compression chamber
42 and a valve seat 4 with the other end of this release port open
The release valve 47 has the third opening and closes the other end of the release port during the normal operation, and opens during the release operation.
This release valve is characterized in that it is curved by an elastic member so as not to come into contact with the valve seat during release operation.
Description
【０００１】[0001]
この考案はたとえば空気調和機の冷凍サイクルに用いられる圧縮機に関する。 This invention relates to a compressor used in a refrigeration cycle of an air conditioner, for example.
【０００２】[0002]
たとえば、冷房運転と暖房運転との切換えが可能な空気調和機においては、圧 縮機としてスクロ−ル式圧縮機を用い、その制御をインバ−タ方式で行うように した冷凍サイクルが用いられることがある。このような冷凍サイクルを用いた場 合、負荷に適合する運転状態が容易に得られるよう、レリ−ス弁機構を設けるよ うにしている。このレリ−ス弁機構は、上記スクロ−ル圧縮機の圧縮室に連通す るレリ−スポ−トが形成され、このレリ−スポ−トはレリ−ス弁によって開閉制 御されるようになっている。それによって、上記圧縮室で圧縮される冷媒の圧縮 機の吸込み側に戻される量が制御されため、負荷に適合した運転状態とすること ができる。 For example, in an air conditioner capable of switching between cooling operation and heating operation, a scroll compressor is used as a compressor, and a refrigeration cycle in which the control is performed by an inverter system is used. There is. When such a refrigeration cycle is used, a release valve mechanism is provided so that an operating condition suitable for the load can be easily obtained. The release valve mechanism has a release port communicating with the compression chamber of the scroll compressor, and the release port is controlled by the release valve. ing. As a result, the amount of the refrigerant compressed in the compression chamber returned to the suction side of the compressor is controlled, so that an operating state suitable for the load can be achieved.
【０００３】 図５はレリ−ス弁機構が設けられた冷凍サイクルの概略を示す。同図中１はス クロ−ル式の圧縮機である。この圧縮機１の吸込み側１ａから吸引されたガス冷 媒は上記圧縮機１で圧縮されて吐出側１ｂに接続された吐出管２に吐出される。 この吐出管２には凝縮器３、膨脹弁４および蒸発器５が順次接続され、この蒸発 器５の流出側が上記圧縮機１の吸込み側１ａに連通している。FIG. 5 schematically shows a refrigerating cycle provided with a release valve mechanism. In the figure, 1 is a scroll type compressor. The gas cooling medium sucked from the suction side 1a of the compressor 1 is compressed by the compressor 1 and discharged to the discharge pipe 2 connected to the discharge side 1b. A condenser 3, an expansion valve 4 and an evaporator 5 are sequentially connected to the discharge pipe 2, and an outflow side of the evaporator 5 communicates with a suction side 1a of the compressor 1.
【０００４】 上記圧縮機１には、上記レリ−スポ−トを開閉するレリ−ス弁６が設けられて いる。このレリ−ス弁６にはレリ−ス管７の一端が接続されている。このレリ− ス管７の中途部には三方弁８が設けられている。上記レリ−ス管７の他端は上記 圧縮機１の吸込み側１ａに接続されている。上記三方弁８の残りのポ−トにはバ イパス管９の一端が接続されている。このバイパス管９の他端は上記吐出管２に 連通している。The compressor 1 is provided with a release valve 6 that opens and closes the release port. One end of a release pipe 7 is connected to the release valve 6. A three-way valve 8 is provided in the middle of the release pipe 7. The other end of the release pipe 7 is connected to the suction side 1a of the compressor 1. One end of a bypass pipe 9 is connected to the remaining port of the three-way valve 8. The other end of the bypass pipe 9 communicates with the discharge pipe 2.
【０００５】 このような構成において、ノ−マル運転時には三方弁８が矢印Ａで示す流れ方 向に切換えられ、吐出管２から吐出された冷媒の吐出圧Ｐｄがレ−リス弁６に加 わる。それによって、このレリ−ス弁６はレリ−スポ−トを閉じ、圧縮室に吸引 された冷媒がレリ−ス管７へ逃げるのを阻止するから、冷凍サイクルの管路を循 環する冷媒量を増大させることができる。つまり、負荷の増大に対応することが できる。In such a configuration, the three-way valve 8 is switched to the flow direction indicated by the arrow A during the normal operation, and the discharge pressure Pd of the refrigerant discharged from the discharge pipe 2 is applied to the Lerris valve 6. .. As a result, the release valve 6 closes the release port and prevents the refrigerant sucked into the compression chamber from escaping to the release pipe 7. Therefore, the amount of refrigerant circulating in the pipeline of the refrigeration cycle is reduced. Can be increased. That is, it is possible to cope with an increase in load.
【０００６】 レリ−ス運転時には三方弁８が矢印Ｂで示す流れ方向に切換えられる。それに よって、レリ−ス弁６には圧縮室の圧縮途中の冷媒の圧力Ｐｍが加わるから、そ の圧力でレリ−ス弁６はレリ−スポ−トを開き、上記圧縮室に吸引された冷媒の 一部をレリ−ス管７へ逃がすから、冷凍サイクルの管路を循環する冷媒量を減少 させることができる。つまり、負荷の減少に対応することができる。During the release operation, the three-way valve 8 is switched in the flow direction indicated by arrow B. As a result, the pressure Pm of the refrigerant during compression in the compression chamber is applied to the release valve 6, and the release valve 6 opens the release port at that pressure, and the refrigerant sucked into the compression chamber. Since a part of this is released to the release pipe 7, the amount of refrigerant circulating in the pipeline of the refrigeration cycle can be reduced. That is, it is possible to cope with a decrease in load.
【０００７】 従来、上記レリ−ス弁６は図６に示すように形成されていた。つまり、同図中 １１は固定スクロ−ルである。この固定スクロ−ル１１にはレリ−スポ−ト１２ が穿設されている。このレリ−スポ−ト１２は一端を上記固定スクロ−ル１１の 内面側に形成された圧縮室１３に連通させ、他端を外面側に開口させている。固 定スクロ−ル１１の外面には弁座体１４が設けられている。この弁座体１４の一 端には上記レリ−スポ−ト１２に連通する弁座孔１５ａが形成された弁座１５が 設けられ、他端には板ばねからなるレリ−ス弁１６とストッパ１７との重合され た一端部がボルト１８によって固定されている。上記弁１６は平らな帯板からな り、上記ストッパ１７の他端部は上記レリ−ス弁１６の他端部の弾性変形量を制 限する湾曲部１７ａに形成されている。Conventionally, the release valve 6 has been formed as shown in FIG. That is, reference numeral 11 in the figure is a fixed scroll. The fixed scroll 11 is provided with a release port 12. The release port 12 has one end communicating with the compression chamber 13 formed on the inner surface side of the fixed scroll 11 and the other end opening to the outer surface side. A valve seat body 14 is provided on the outer surface of the fixed scroll 11. A valve seat 15 having a valve seat hole 15a communicating with the release port 12 is provided at one end of the valve seat body 14, and a release valve 16 composed of a leaf spring and a stopper are provided at the other end. The one end where it is overlapped with 17 is fixed by a bolt 18. The valve 16 is made of a flat band plate, and the other end of the stopper 17 is formed as a curved portion 17a that limits the amount of elastic deformation of the other end of the release valve 16.
【０００８】 上記構成において、ノ−マル運転時は、図７（ａ）に示すように、上記レリ− ス弁１６の上面側に三方弁８から圧縮機１に戻った冷媒の吐出圧Ｐｄが加わるか ら、上記レリ−スポ−ト１２が閉じられ、圧縮室１３で圧縮された冷媒が流出す るのが阻止される。In the above configuration, during normal operation, as shown in FIG. 7A, the discharge pressure Pd of the refrigerant returned from the three-way valve 8 to the compressor 1 is applied to the upper surface side of the release valve 16. As a result, the release port 12 is closed and the refrigerant compressed in the compression chamber 13 is prevented from flowing out.
【０００９】 一方、レリ−ス運転時には冷媒の吐出圧Ｐｄがレリ−ス弁１６に加わることが ない。そのため、図７（ｂ）に示すように圧縮室１３の圧縮途中の冷媒の圧力に よって上記レリ−ス弁１６が弾性変形してレリ−スポ−ト１２が開放されるから 、圧縮室１３で圧縮された冷媒の一部がレリ−スされる。On the other hand, during the release operation, the discharge pressure Pd of the refrigerant is not applied to the release valve 16. Therefore, as shown in FIG. 7B, the release valve 16 is elastically deformed by the pressure of the refrigerant during the compression in the compression chamber 13 and the release port 12 is opened. A part of the compressed refrigerant is released.
【００１０】 ところで、レリ−ス運転時に上記レリ−ス弁１６に加わる圧縮室からの冷媒の 圧力は一定でなく、圧縮行程と吸引行程とのうち、吸引行程では上記レリ−ス弁 １６に冷媒の圧力が加わることがない。そのため、上記レリ−ス弁１６は、これ に加わる圧力の変動に応じて弾性変形を繰り返し、レリ−スポ−ト１２を開閉す るから、その都度、上記レリ−ス弁１６の他端部が弁座１５との接離を繰り返す ことになる。このように、レリ−ス運転によるレリ−ス弁１６の開閉が頻繁に行 われると、開閉にともなう弁座１５との接離によって、上記レリ−ス弁１６や弁 座１５が早期に摩耗するということがあるばかりか、そのときの接触音による騒 音の発生を招くなどのことがある。By the way, the pressure of the refrigerant from the compression chamber applied to the release valve 16 during the release operation is not constant, and the refrigerant is supplied to the release valve 16 in the suction stroke of the compression stroke and the suction stroke. Is not applied. Therefore, the release valve 16 repeatedly elastically deforms in response to fluctuations in the pressure applied to the release valve 16 to open and close the release port 12, so that the other end of the release valve 16 is changed each time. The contact and separation with the valve seat 15 will be repeated. As described above, when the release valve 16 is frequently opened and closed by the release operation, the release valve 16 and the valve seat 15 are worn early due to the contact and separation with the valve seat 15 associated with the opening and closing. In addition to the above, there are cases in which noise is generated due to the contact sound at that time.
【００１１】[0011]
このように、従来のレリ−ス弁は、レリ−ス運転時に開閉が繰り返され、弁座 との接離が頻繁に行われるので、摩耗し易いということがあるばかりか、騒音の 発生を招くなどのことがあった。 As described above, the conventional release valve is repeatedly opened and closed during release operation and frequently comes into contact with and separates from the valve seat, so that not only it is easily worn but also noise is generated. There was such a thing.
【００１２】 この考案は上記事情に基づきなされたもので、その目的とするところは、レリ −ス運転時に、レリ−ス弁が弁座と接離を繰り返すことがないようにした圧縮機 を提供することにある。The present invention has been made based on the above circumstances, and an object thereof is to provide a compressor in which a release valve is prevented from repeating contact and separation with a valve seat during release operation. To do.
【００１３】[0013]
上記課題を解決するためにこの考案は、密閉ケ−スと、この密閉ケ−スに設け られ内部に流体を圧縮する圧縮室が形成された圧縮機構と、一端を上記圧縮室に 連通させて形成されレリ−ス運転時に圧縮室の流体の一部を逃がすためのレリ− スポ−トと、このレリ−スポ−トの他端が開口した弁座を有しノ−マル運転時に は上記レリ−スポ−トの他端を閉塞し、レリ−ス運転時には開放するレリ−ス弁 とを具備し、このレリ−ス弁は、レリ−ス運転時に上記弁座に接触しないよう弾 性部材によって湾曲形成されていることを特徴とする。 In order to solve the above-mentioned problems, the present invention has a hermetic case, a compression mechanism provided in the hermetic case, in which a compression chamber for compressing a fluid is formed, and one end of which communicates with the compression chamber. It has a release port for releasing a part of the fluid in the compression chamber during the release operation, and a valve seat with the other end of the release port opened, and the release port described above is used during the normal operation. -A release valve that closes the other end of the port and opens during release operation is provided by an elastic member so as not to come into contact with the valve seat during release operation. It is characterized by being curved.
【００１４】[0014]
上記構成によれば、レリ−ス弁はレリ−ス運転時に弁座と接触しないよう湾曲 形成されているため、レリ−ス弁に加わる圧縮室からの流体の圧力が変動しても 、弁座と接離を繰り返して摩耗したり、騒音を発生するなどのことが防止される 。 According to the above configuration, the release valve is curved so that it does not come into contact with the valve seat during the release operation, so even if the pressure of the fluid from the compression chamber applied to the release valve fluctuates, the valve seat It is possible to prevent wear and noise by repeatedly contacting and separating.
【００１５】[0015]
以下、この考案の一実施例を図１乃至図４を参照して説明する。図１は圧縮機 としてのスクロ−ル型圧縮機を示し、この圧縮機は密閉ケ−ス２１を備えている 。この密閉ケ−ス２１内には支持フレ−ム２２が設けられ、この支持フレ−ム２ ２によって上記密閉ケ−ス２１の内部空間を上部空間部２１ａと下部空間部２１ ｂとに非気密状態で隔別している。下部空間部２１ｂには駆動源を構成する電動 機２３が設けられている。この電動機２３はステ−タ２４と、このステ−タ２４ 内に設けられたロ−タ２５と、このロ−タ２５に取着された回転軸２６とから構 成されている。 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a scroll type compressor as a compressor, and this compressor has a closed case 21. A support frame 22 is provided in the closed case 21, and the support frame 22 makes the internal space of the closed case 21 non-airtight in an upper space 21a and a lower space 21b. Separated by the state. An electric motor 23, which constitutes a drive source, is provided in the lower space portion 21b. The electric motor 23 is composed of a stator 24, a rotor 25 provided in the stator 24, and a rotating shaft 26 attached to the rotor 25.
【００１６】 上記回転軸２６の上部は上記支持フレ−ム２２に回転自在に支持され、この支 持フレ−ム２２から突出した上端部には軸線を上記回転軸２６の軸線に対して偏 心させた偏心軸部２７が設けられている。この偏心軸部２７には回転スクロ−ル ２８の鏡板２８ａの外面（下面）に形成された筒部２９が回転自在に嵌合されて いる。上記旋回スクロ−ル２８の鏡板２８ａの内面（上面）には旋回翼２８ｂが 一体的に形成されている。An upper portion of the rotating shaft 26 is rotatably supported by the supporting frame 22, and an axis line is eccentric with respect to the axis line of the rotating shaft 26 at an upper end portion protruding from the supporting frame 22. The eccentric shaft portion 27 is provided. A cylindrical portion 29 formed on the outer surface (lower surface) of the end plate 28a of the rotary scroll 28 is rotatably fitted to the eccentric shaft portion 27. A swirl vane 28b is integrally formed on the inner surface (upper surface) of the end plate 28a of the swirl scroll 28.
【００１７】 上記旋回スクロ−ル２８の鏡板２８ａの外面と上記支持フレ−ム２２の上面と の間にはオルダムリング３１が設けられている。このオルダムリング３１は、上 記旋回スクロ−ル２８が上記回転軸２６の偏心軸部２７によって偏心回転させら れるときに、自転するのを規制しながら旋回運動させる。An Oldham ring 31 is provided between the outer surface of the end plate 28 a of the turning scroll 28 and the upper surface of the support frame 22. The Oldham ring 31 makes a turning motion while restricting its rotation when the turning scroll 28 is eccentrically rotated by the eccentric shaft portion 27 of the rotary shaft 26.
【００１８】 上記上部空間部２１ａには、上記旋回スクロ−ル２８とで圧縮機構を形成する 固定スクロ−ル３２が配置されている。この固定スクロ−ル３２は鏡板３２ａと 、この鏡板３２ａの内面（下面）に設けられた固定翼３２ｂとからなる。この固 定翼３２ｂは上記旋回翼２８ｂに嵌合され、それによってこれら固定翼３２ｂと 旋回翼２８ｂとの間には図２に示すようにほぼ同じ形状の２つの圧縮室３３を形 成している。これら圧縮室３３は、上記旋回スクロ−ル２８の旋回運動にともな って断面積を減少させながらその位置を徐々に旋回方向に移動させ、最終的には 固定スクロ−ル３２の鏡板３２ｂの中心部に形成された吐出ポ−ト３４まで移動 し、かつ面積がほぼ０になる。A fixed scroll 32, which forms a compression mechanism with the swivel scroll 28, is arranged in the upper space 21a. The fixed scroll 32 includes a mirror plate 32a and fixed blades 32b provided on the inner surface (lower surface) of the mirror plate 32a. The fixed vanes 32b are fitted to the swirl vanes 28b, thereby forming two compression chambers 33 having substantially the same shape between the fixed vanes 32b and the swirl vanes 28b as shown in FIG. There is. These compression chambers 33 gradually move their positions in the swivel direction while reducing the cross-sectional area with the swivel movement of the swivel scroll 28, and finally the end plate 32b of the fixed scroll 32. It moves to the discharge port 34 formed at the center and the area becomes almost zero.
【００１９】 上記各圧縮室３３には吸込みポ−ト３５が連通して設けられている。この吸込 みポ−ト３５は密閉容器２１の周壁に接続された吸込管３６に連通している。こ の吸込管３６は図５に示した蒸発器５の出口側に連通している。したがって、上 記蒸発器５から流出した冷媒は、上記吸込管３６、吸込みポ−ト３５を通って上 記圧縮室３３に吸引されて圧縮される。A suction port 35 is provided in communication with each compression chamber 33. The suction port 35 communicates with a suction pipe 36 connected to the peripheral wall of the closed container 21. The suction pipe 36 communicates with the outlet side of the evaporator 5 shown in FIG. Therefore, the refrigerant flowing out from the evaporator 5 passes through the suction pipe 36 and the suction port 35 and is sucked into the compression chamber 33 and compressed.
【００２０】 上記圧縮室３３で加圧された冷媒は上記吐出ポ−ト３４からバルブカバ−３７ によって覆われた高圧吐出室３８に流出し、この高圧吐出室３８に連通した吐出 ポ−ト３９および吐出管４１を通って図５に示す凝縮器３へ流れる。The refrigerant pressurized in the compression chamber 33 flows out of the discharge port 34 into the high pressure discharge chamber 38 covered by the valve cover 37, and the discharge port 39 and the discharge port 39 communicating with the high pressure discharge chamber 38. It flows through the discharge pipe 41 to the condenser 3 shown in FIG.
【００２１】 上記固定スクロ−ル３２の鏡板３２ａには、図２に示すように一端を上記各圧 縮室３３に連通させて一対のレリ−スポ−ト４２が穿設されている。このレリ− スポ−ト４２の他端は、上記鏡板３２ａの上記上部空間部２１ａに連通し、かつ 上記高圧吐出室３８に連通しない部分に開口している。上記鏡板３２ａの外面に は弁座体４３が設けられている。この弁座体４３の一端には弁座４４が形成され 、この弁座４４には上記レリ−スポ−ト４２に連通する弁座孔４５が穿設されて いる。As shown in FIG. 2, the end plate 32a of the fixed scroll 32 is provided with a pair of release ports 42, one end of which communicates with each of the compression chambers 33. The other end of the release port 42 is open to a portion that communicates with the upper space portion 21a of the end plate 32a and does not communicate with the high pressure discharge chamber 38. A valve seat body 43 is provided on the outer surface of the end plate 32a. A valve seat 44 is formed at one end of the valve seat body 43, and a valve seat hole 45 communicating with the release port 42 is formed in the valve seat 44.
【００２２】 上記弁座体４３の他端部には取付部４６が形成され、この取付部４６にはレリ −ス弁４７と弁ストッパ４８との重合された一端部がボルト４９によって固定さ れている。このボルト４９は上記固定スクロ−ル３２に螺合し、上記弁座体４３ を固定スクロ−ル３２に固定している。A mounting portion 46 is formed at the other end of the valve seat body 43, and one end of the release valve 47 and the valve stopper 48, which are overlapped with each other, is fixed to the mounting portion 46 by a bolt 49. ing. The bolt 49 is screwed into the fixed scroll 32 to fix the valve seat body 43 to the fixed scroll 32.
【００２３】 上記レリ−ス弁４７は容易に弾性変形する帯板状の板ばねによって形成されて いて、その他端部は上記弁座４４に接触しないよう上方へ湾曲した湾曲部４７ａ に形成されている。上記弁ストッパ４８は容易に弾性変形することのない帯状板 材からなり、その他端部は上記レリ−ス弁４７の湾曲部４７ａよりも大きく（小 さな曲率）湾曲した湾曲部４８ａに形成されている。つまり、レリ−ス弁４７の 湾曲部４７ａの上面側と、弁ストッパ４８の湾曲部４８ａの下面側との間には、 上記レリ−ス弁４７の湾曲部４７ａの上面に冷媒の圧力を確実に加えることがで きる隙間５１が形成されている。The release valve 47 is formed of a strip-shaped plate spring that is easily elastically deformed, and the other end thereof is formed in a curved portion 47 a which is curved upward so as not to come into contact with the valve seat 44. There is. The valve stopper 48 is made of a strip-shaped plate material that is not easily elastically deformed, and the other end thereof is formed in a curved portion 48a which is larger (smaller curvature) than the curved portion 47a of the release valve 47. ing. That is, between the upper surface side of the curved portion 47a of the release valve 47 and the lower surface side of the curved portion 48a of the valve stopper 48, the pressure of the refrigerant is surely applied to the upper surface of the curved portion 47a of the release valve 47. There is formed a gap 51 that can be added to.
【００２４】 このような構成において、ノ−マル運転時には圧縮室３３で圧縮されて吐出ポ −ト３９から吐出管４１へ吐出した冷媒の一部が図５に示す三方弁８からレリ− ス管７を通して密閉ケ−ス２１の上部空間部２１ａへ流入する。それによって、 レリ−ス弁４７の湾曲部４７ａ外面に冷媒の吐出圧Ｐｄが加わるから、その圧力 によって上記湾曲部４７ａが図４（ａ）に示すように弾性変形し、弁座体４３の 弁座４４に接触して弁座孔４５を閉じ、圧縮室３３で圧縮される冷媒がレリ−ス 管７へ逃げるのを阻止する。In such a configuration, during normal operation, a part of the refrigerant compressed in the compression chamber 33 and discharged from the discharge port 39 to the discharge pipe 41 is partially discharged from the three-way valve 8 shown in FIG. 7 and flows into the upper space 21 a of the closed case 21. As a result, the discharge pressure Pd of the refrigerant is applied to the outer surface of the curved portion 47a of the release valve 47, so that the pressure causes the curved portion 47a to elastically deform as shown in FIG. The valve seat hole 45 is closed by contacting the seat 44, and the refrigerant compressed in the compression chamber 33 is prevented from escaping to the release pipe 7.
【００２５】 一方、レリ−ス運転時には図５における三方弁８が切替わることでレリ−ス管 ７が圧縮機１の吸込み側１ａに連通する。それによって、上記湾曲部４７ａには 冷媒の吐出圧Ｐｄが加わらなくなるから、弁座４４から離れる方向に復元する。 つまり、弁座孔４５は、レリ−ス弁４７の湾曲部４７ａが復元力によって上方へ 湾曲することで、開放されたままの状態となる。そのため、圧縮室３３からの冷 媒の圧力が変動しても、上記レリ−ス弁４７は図４（ｂ）に示すように実線の状 態から鎖線の状態へ弾性変形するだけで、弁座孔４５の開閉を繰り返すことがな いから、その湾曲部４７ａが弁座４４との接離を繰り返して上記レリ−ス弁４７ や弁座４４が早期に摩耗したり、騒音の発生を招くなどのことがない。On the other hand, during release operation, the release pipe 7 communicates with the suction side 1 a of the compressor 1 by switching the three-way valve 8 in FIG. Thereby, the discharge pressure Pd of the refrigerant is not applied to the curved portion 47a, so that the curved portion 47a is restored in the direction away from the valve seat 44. In other words, the valve seat hole 45 remains open because the bending portion 47a of the release valve 47 bends upward due to the restoring force. Therefore, even if the pressure of the cooling medium from the compression chamber 33 fluctuates, the release valve 47 simply elastically deforms from the solid line state to the chain line state as shown in FIG. Since the opening and closing of the hole 45 is not repeated, the curved portion 47a is repeatedly contacted with and separated from the valve seat 44, causing the release valve 47 and the valve seat 44 to be worn early and causing noise. There is no such thing.
【００２６】 なお、この考案は上記一実施例に限定されるものでなく、種々変形可能である 。たとえば圧縮機としてはスクロ−ス型に限定されず、ロ−タリ型やレシプロ型 などであってもよく、要はレリ−ス機構を備えることができる圧縮機であれば適 用することができる。It should be noted that the present invention is not limited to the above-mentioned one embodiment, and various modifications can be made. For example, the compressor is not limited to the scroll type, but may be a rotary type or a reciprocating type. In short, any compressor can be used as long as it can have a release mechanism. ..
【００２７】[0027]
以上述べたようにこの考案は、レリ−ス運転時にレリ−スポ−トを開放するレ リ−ス弁を、レリ−ス運転時に弁座に接触しないよう弾性部材によって湾曲形成 するようにした。 As described above, according to the present invention, the release valve which opens the release port during the release operation is curved by the elastic member so as not to come into contact with the valve seat during the release operation.
【００２８】 そのため、レリ−ス運転時には、上記レリ−ス弁が弁座との接離を繰り返すと いうことがないから、上記レリ−ス弁や弁座が早期に損耗したり、接触による騒 音の発生を招くなどのことがない。Therefore, during release operation, the release valve does not repeatedly come into contact with and separate from the valve seat, so that the release valve and the valve seat are worn out early and noise caused by contact is generated. There is no occurrence of sound.
【図１】この考案の一実施例の全体構成を示す断面図。FIG. 1 is a sectional view showing the overall configuration of an embodiment of the present invention.
【図２】同じく圧縮機構の部分の横断面。FIG. 2 is a transverse cross section of the compression mechanism portion.
【図３】同じくレリ−ス弁の構成図。FIG. 3 is a configuration diagram of a release valve of the same.
【図４】同じく（ａ）はレリ−ス弁のノ−マル運転時の
状態の説明図、（ｂ）は同じくレリ−ス運転時の状態の
説明図。FIG. 4A is an explanatory diagram of a state during normal operation of the release valve, and FIG. 4B is an explanatory diagram of a state during release operation of the release valve.
【図５】レリ−ス機構を備えた一般的な冷凍サイクルの
構成図。FIG. 5 is a configuration diagram of a general refrigeration cycle including a release mechanism.
【図６】従来のレリ−ス弁の構成図。FIG. 6 is a configuration diagram of a conventional release valve.
【図７】同じく（ａ）はレリ−ス弁のノ−マル運転時の
状態の説明図、（ｂ）は同じくレリ−ス運転時の状態の
説明図。FIG. 7A is an explanatory view of a state during normal operation of the release valve, and FIG. 7B is an explanatory view of a state during release operation of the release valve.
２１…密閉ケ−ス、２８…旋回スクロ−ル（圧縮機
構）、３２…固定スクロ−ル（圧縮機構）、４２…レリ
−スポ−ト、４３…弁座、４７…レリ−ス弁。21 ... Sealing case, 28 ... Orbiting scroll (compression mechanism), 32 ... Fixed scroll (compression mechanism), 42 ... Release port, 43 ... Valve seat, 47 ... Release valve.
Claims (1)
れ内部に流体を圧縮する圧縮室が形成された圧縮機構
と、一端を上記圧縮室に連通させて形成されレリ−ス運
転時に圧縮室の流体の一部を逃がすためのレリ−スポ−
トと、このレリ−スポ−トの他端が開口した弁座を有し
ノ−マル運転時には上記レリ−スポ−トの他端を閉塞
し、レリ−ス運転時には開放するレリ−ス弁とを具備
し、このレリ−ス弁は、レリ−ス運転時に上記弁座に接
触しないよう弾性部材によって湾曲形成されていること
を特徴とする圧縮機。1. A hermetically sealed case, a compression mechanism which is provided in the hermetically sealed case and in which a compression chamber for compressing a fluid is formed, and one end of which communicates with the compression chamber. Sometimes a relief spout for letting out part of the fluid in the compression chamber
And a release valve that has a valve seat with the other end of this release port open and closes the other end of the release port during normal operation and opens it during release operation. The compressor is characterized in that the release valve is curved by an elastic member so as not to come into contact with the valve seat during release operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP587692U JPH0566291U (en) | 1992-02-14 | 1992-02-14 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP587692U JPH0566291U (en) | 1992-02-14 | 1992-02-14 | Compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0566291U true JPH0566291U (en) | 1993-09-03 |
Family
ID=11623120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP587692U Pending JPH0566291U (en) | 1992-02-14 | 1992-02-14 | Compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0566291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317630A (en) * | 2008-12-19 | 2012-01-11 | 丹佛斯商业压缩机公司 | Scroll-type refrigerator compressor |
-
1992
- 1992-02-14 JP JP587692U patent/JPH0566291U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317630A (en) * | 2008-12-19 | 2012-01-11 | 丹佛斯商业压缩机公司 | Scroll-type refrigerator compressor |
| CN102317630B (en) * | 2008-12-19 | 2015-05-20 | 丹佛斯商业压缩机公司 | Scroll-type refrigerator compressor |
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