JPH08284826A - Hermetic electric compressor - Google Patents
Hermetic electric compressorInfo
- Publication number
- JPH08284826A JPH08284826A JP8683795A JP8683795A JPH08284826A JP H08284826 A JPH08284826 A JP H08284826A JP 8683795 A JP8683795 A JP 8683795A JP 8683795 A JP8683795 A JP 8683795A JP H08284826 A JPH08284826 A JP H08284826A
- Authority
- JP
- Japan
- Prior art keywords
- suction muffler
- cylinder
- muffler
- compressor
- cylinder head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compressor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気冷蔵庫等に使用され
る密閉型圧縮機（以下、圧縮機と記す）に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor (hereinafter referred to as a compressor) used in an electric refrigerator or the like.
【０００２】[0002]
【従来の技術】最近の電気冷蔵庫等の冷却システムに用
いる圧縮機には、運転による騒音が低いことに加えて、
エネルギー効果（ＥＥＲ）が良好であることが求められ
ている。2. Description of the Related Art Recently, compressors used in cooling systems for electric refrigerators, etc.
A good energy effect (EER) is required.
【０００３】以下、図面を参照しながら上述した圧縮機
の一例について説明する。図６は従来の圧縮機の側面断
面図を示し、密閉ケース１内には弾性的に取り付けられ
た圧縮要素２と電動要素３が収納されている。An example of the above-mentioned compressor will be described below with reference to the drawings. FIG. 6 shows a side sectional view of a conventional compressor, in which a compression element 2 and an electric element 3 which are elastically mounted are housed in a hermetically sealed case 1.
【０００４】密閉ケース１の側面にはハーメチックター
ミナル４が固着され、電気的に電動要素３と接続されて
いる。A hermetic terminal 4 is fixed to the side surface of the closed case 1 and electrically connected to the electric element 3.
【０００５】図７は図６の上面図を示す。図７において
圧縮要素２の端部にはシリンダヘッド５が設置され、こ
のシリンダヘット５はサクションマフラー６と連結され
ている。吸入チューブ７はサクションマフラー６の入口
孔８の近くに配置されている。FIG. 7 shows a top view of FIG. In FIG. 7, a cylinder head 5 is installed at the end of the compression element 2, and this cylinder head 5 is connected to a suction muffler 6. The suction tube 7 is arranged near the inlet hole 8 of the suction muffler 6.
【０００６】図８は図６のシリンダヘット５とサクショ
ンマフラー６を示し、図９は図７のＡ−Ａ矢視側面図を
示す。FIG. 8 shows the cylinder head 5 and the suction muffler 6 of FIG. 6, and FIG. 9 shows a side view taken along the line AA of FIG.
【０００７】図８と図９において、シリンダヘット５と
連結されたサクションマフラー６を備え、サクションマ
フラー６は左右ほぼ対称に空洞容積９，１０を形成する
とともに、両空洞容積９，１０の略中心線１１上に吸入
孔１２を形成している。In FIGS. 8 and 9, a suction muffler 6 connected to a cylinder head 5 is provided, and the suction muffler 6 forms hollow volumes 9 and 10 substantially symmetrically with each other, and substantially the center of both hollow volumes 9 and 10. The suction hole 12 is formed on the line 11.
【０００８】そして、左側の空洞容積９と右側の空洞容
積１０が略等しい大きさである。また、圧縮機停止時の
オイル溜り防止として、サクションマフラー６の底面
（両空洞容積９，１０の下）にオイル抜き穴１３を形成
している。The cavity volume 9 on the left side and the cavity volume 10 on the right side are substantially equal in size. Further, an oil drain hole 13 is formed on the bottom surface of the suction muffler 6 (below both cavity volumes 9 and 10) to prevent oil accumulation when the compressor is stopped.
【０００９】以上のような構成において、冷却システム
（図示せず）から圧縮機へ戻ってきた戻りガスは、吸入
チューブ７と接触しているガス入口部１４から吸入され
る。一方、シリンダからの戻りガスに対して両空洞容積
９，１０がガスクッションになることと、両空洞容積
９，１０の連通路１５の吸入孔１２入口付近が共鳴周波
数の一番低い節となること、次に低い節がガス入口端面
の付近にあるため、圧縮機運転中の騒音が低減される機
構となっている。In the structure described above, the return gas returned from the cooling system (not shown) to the compressor is sucked through the gas inlet portion 14 which is in contact with the suction tube 7. On the other hand, both cavity volumes 9 and 10 function as gas cushions for the return gas from the cylinder, and the vicinity of the inlet port 12 of the communication passage 15 of both cavity volumes 9 and 10 is the node having the lowest resonance frequency. In particular, since the next lowest node is near the gas inlet end face, noise is reduced during operation of the compressor.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら上記のよ
うな構成では、圧縮機が運転中にサクションマフラーの
空洞容積にオイル抜き穴よりオイルが入り込み空洞容積
が変化し、うまく音を低減させることができないという
課題を有していた。However, in the above-mentioned configuration, while the compressor is in operation, oil enters the suction muffler through the oil drain hole to change the cavity volume, and the sound cannot be reduced well. Had a problem.
【００１１】本発明は上記課題に鑑み、運転騒音が小さ
い圧縮機を提供するものである。In view of the above problems, the present invention provides a compressor that produces low operating noise.
【００１２】[0012]
【課題を解決するための手段】以上のような課題を解決
するために本発明の圧縮機は、シリンダヘットとガス通
路が連結されたサクションマフラーを備え、前記マフラ
ーは底面にオイル抜き穴を備えるとともに、同じくマフ
ラー底面の外周にスカート状の囲いを形成している。In order to solve the above problems, a compressor of the present invention comprises a suction muffler in which a cylinder head and a gas passage are connected to each other, and the muffler has an oil drain hole on its bottom surface. At the same time, a skirt-shaped enclosure is also formed on the outer periphery of the bottom surface of the muffler.
【００１３】[0013]
【作用】本発明は上記した構成により、サクションマフ
ラー表面及び、フロック等に付着したオイルが、サクシ
ョンマフラーの底面に溜り、同じく底面に設けたオイル
抜き穴よりオイルが吸い込まれ、マフラーの両空洞容積
が変化するのを、サクションマフラーの底面の外周に囲
いを設けることにより適正化したサクションマフラーの
空洞容積を確保することができる。According to the present invention having the above-described structure, the oil adhering to the surface of the suction muffler and the flock is accumulated on the bottom surface of the suction muffler, and the oil is sucked through the oil drain hole provided on the bottom surface, so that the volume of both cavities of the muffler is increased. It is possible to secure an optimized cavity volume of the suction muffler by providing an enclosure on the outer circumference of the bottom surface of the suction muffler.
【００１４】[0014]
【実施例】以下本発明の一実施例の圧縮機について、図
面を参照しながら説明する。なお、従来例と同一部品は
同一符号を用いて説明し、構成、動作の同じところは省
略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A compressor according to an embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example will be described using the same reference numerals, and the same parts of the configuration and the operation will be omitted.
【００１５】図１〜図５において、密閉ケース２０には
ハーメチックターミナル２１が固着されている。この密
閉ケース２０内に弾性的に取り付けられた開口端２２を
有するシリンダ２３を備えたブロック２４と、シリンダ
２４内のピストン２５と、このピストン２５を往復させ
るモータ２６を有している。1 to 5, a hermetic terminal 21 is fixedly attached to the closed case 20. The hermetically sealed case 20 includes a block 24 having a cylinder 23 having an opening end 22 elastically attached thereto, a piston 25 in the cylinder 24, and a motor 26 for reciprocating the piston 25.
【００１６】上記シリンダブロック２４に固定されるバ
ルブプレート２７と、このバルブプレート２７を蓋する
シリンダヘット２８を有している。A valve plate 27 fixed to the cylinder block 24 and a cylinder head 28 for covering the valve plate 27 are provided.
【００１７】このシリンダヘット２８とガス通路２９が
連結されたサクションマフラー３０を備え、サクション
マフラー３０は連通路３５を介して左右ほぼ対称に空洞
容積３３，３４を形成するとともに、両空洞容積３３，
３４の略中心線３１の連通路３５にガス通路２９に連通
する吸入孔３２を形成している。The cylinder muffler 28 and the gas passage 29 are connected to each other by a suction muffler 30. The suction muffler 30 forms hollow volumes 33 and 34 substantially symmetrically with each other through a communication passage 35.
A suction passage 32 that communicates with the gas passage 29 is formed in a communication passage 35 that is substantially centerline 31 of the suction passage 34.
【００１８】そして、左側の空洞容積３３と右側の空洞
容積３４が略等しい大きさである。また、圧縮機停止時
のオイル溜り防止として、サクションマフラー３０の底
面（両空洞容積３３，３４の下）にオイル抜き穴３７を
形成しており、同じくマフラー底面の外周にスカート状
の囲い３８を形成している。The left-side cavity volume 33 and the right-side cavity volume 34 have substantially the same size. Further, to prevent oil accumulation when the compressor is stopped, an oil drain hole 37 is formed on the bottom surface of the suction muffler 30 (below both cavity volumes 33 and 34), and a skirt-shaped enclosure 38 is also formed on the outer circumference of the bottom surface of the muffler. Is forming.
【００１９】以上のような構成において、冷却システム
（図示していない）から圧縮機へ戻ってきた戻りガス
は、吸入チューブ２０ａと近接しているガス入口部３６
から吸入される。一方、シリンダ２３からの戻りガス
（シリンダ２３中でピストン２５により圧縮されたガス
が吸入バルブのシール面から洩れてサクションマフラー
３０内に吹き戻されるガスのこと）に対して両空洞容積
３３，３４がガスクッションになることと、両空洞容積
３３，３４の連通路３５の吸入孔３２付近が共鳴周波数
の節、即ち一番近い１次モードの節が図５のａの位置と
なることと、次に低い２次モードの節が図５のｂの位置
であるガス入口端面３６ａの付近にあるため、圧縮機運
転中の騒音が大幅に低減される。In the structure described above, the return gas returned from the cooling system (not shown) to the compressor is the gas inlet portion 36 which is close to the suction tube 20a.
Inhaled from. On the other hand, for the return gas from the cylinder 23 (the gas that is compressed by the piston 25 in the cylinder 23 and leaks from the sealing surface of the suction valve and is blown back into the suction muffler 30), both cavity volumes 33, 34 Is a gas cushion, and the vicinity of the suction hole 32 of the communication passage 35 of both cavity volumes 33 and 34 is the resonance frequency node, that is, the nearest first-order mode node is at the position a in FIG. Since the node of the second lowest secondary mode is near the gas inlet end face 36a, which is the position of b in FIG. 5, noise during operation of the compressor is greatly reduced.
【００２０】ここで従来の機構であると、圧縮機停止時
のサクションマフラー空洞容積内３３，３４のオイルを
抜く目的に作られた、サクションマフラー３０の底面に
あるオイル抜き穴３７から、圧縮機運転時では逆にオイ
ルが入り込み空洞容積３３，３４が変化して、うまく音
を低減させることができなかった。According to the conventional mechanism, a compressor is provided through an oil drain hole 37 formed on the bottom surface of the suction muffler 30 for the purpose of draining oil in the suction muffler cavity volumes 33 and 34 when the compressor is stopped. On the contrary, at the time of operation, oil entered and the cavity volumes 33 and 34 changed, and the sound could not be reduced well.
【００２１】しかし、本発明の様にサクションマフラー
底面のオイル抜き穴３７の外周にスカート状の囲い３８
を設けたことにより本来のサクションマフラー３０の機
能が発揮される。However, as in the present invention, a skirt-shaped enclosure 38 is provided on the outer periphery of the oil drain hole 37 on the bottom of the suction muffler.
The original function of the suction muffler 30 is exhibited by providing the.
【００２２】[0022]
【発明の効果】以上のような本発明は、シリンダヘット
とガス通路が連結されたサクションマフラーを備え、前
記マフラーは底面にオイル抜き穴を備えるとともに、同
じく底面の外周にスカート状の囲いを形成することによ
り、サクションマフラー表面、及び、フロック等に付着
したオイルが、サクションマフラーの底面に溜り、同じ
く底面に設けたオイル抜き穴よりオイルが吸い込まれ、
マフラーの両空洞容積が変化し、圧縮機運転中の騒音が
増大するのを防ぐことができる。As described above, the present invention includes a suction muffler in which a cylinder head and a gas passage are connected to each other. The muffler has an oil drain hole on the bottom surface and a skirt-shaped enclosure on the outer circumference of the bottom surface. By doing so, the oil attached to the surface of the suction muffler and flock, etc. collects on the bottom surface of the suction muffler, and the oil is sucked in through the oil drain hole also provided on the bottom surface.
It is possible to prevent both cavities of the muffler from changing and increasing noise during compressor operation.
【図１】本発明の一実施例における密閉型電動圧縮機の
側面断面図FIG. 1 is a side sectional view of a hermetic electric compressor according to an embodiment of the present invention.
【図２】図１の上面断面図FIG. 2 is a top sectional view of FIG.
【図３】図１のＢーＢ矢視断面図FIG. 3 is a sectional view taken along the line BB of FIG.
【図４】図３のシリンダヘットとサクションマフラーの
正面図FIG. 4 is a front view of the cylinder head and the suction muffler of FIG.
【図５】図４のサクションマフラーの要部断面図5 is a cross-sectional view of the main parts of the suction muffler of FIG.
【図６】従来の密閉型電動圧縮機の側面断面図FIG. 6 is a side sectional view of a conventional hermetic electric compressor.
【図７】図６の上面断面図7 is a top sectional view of FIG.
【図８】図７のＡ−Ａ矢視によるシリンダヘットとサク
ションマフラーの組立図8 is an assembly view of the cylinder head and the suction muffler taken along the line AA in FIG.
【図９】図８のサクションマフラーの局部断面図9 is a partial sectional view of the suction muffler of FIG.
２０ 密閉ケース ２１ ハーメチックターミナル ２２ 開口部 ２３ シリンダ ２４ ブロック ２５ ピストン ２６ モータ ２７ バルブプレート ２８ シリンダヘット ２９ ガス通路 ３０ サクションマフラー ３１ 中心線 ３２ 吸入孔 ３３ 左側の空洞容積 ３４ 右側の空洞容積 ３５ 連通路 ３６ ガス入口部 ３７ オイル抜き穴 ３８ スカート状の囲い 20 Closed Case 21 Hermetic Terminal 22 Opening 23 Cylinder 24 Block 25 Piston 26 Motor 27 Valve Plate 28 Cylinder Head 29 Gas Passage 30 Suction Muffler 31 Centerline 32 Suction Hole 33 Left Side Cavity Volume 34 Right Side Cavity Volume 35 Communication Passage 36 Gas Inlet 37 Oil drain hole 38 Skirt-shaped enclosure
フロントページの続き (72)発明者 井出 照正 大阪府東大阪市高井田本通４丁目２番５号 松下冷機株式会社内Front page continuation (72) Inventor Terumasa Ide 4-2-5 Takaidahondori, Higashi-Osaka City, Osaka Prefecture Matsushita Cold Machinery Co., Ltd.
Claims (1)
取り付けられた開口端を有するシリンダを備えたブロッ
クと、前記シリンダ内のピストンと、前期ピストンを往
復させるモータと、前記シリンダブロックに固定される
バルブプレートと、このバルブプレートを蓋するシリン
ダヘットと、前記シリンダヘットとガス通路が連結され
たサクションマフラーとを備え、前記サクションマフラ
ーは底面部にオイル抜き穴を備えるとともに、同じく底
面部の外周にスカート状の囲いを形成したことを特徴と
する密閉型電動圧縮機。1. A block provided with a closed case, a cylinder having an open end elastically mounted in the case, a piston in the cylinder, a motor for reciprocating the piston in the previous period, and a block fixed to the cylinder block. A valve plate, a cylinder head that covers the valve plate, and a suction muffler in which the cylinder head and the gas passage are connected to each other.The suction muffler has an oil drain hole in the bottom surface and also has a bottom surface. A hermetic electric compressor having a skirt-shaped enclosure formed on the outer circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08683795A JP3220617B2 (en) | 1995-04-12 | 1995-04-12 | Hermetic electric compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08683795A JP3220617B2 (en) | 1995-04-12 | 1995-04-12 | Hermetic electric compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08284826A true JPH08284826A (en) | 1996-10-29 |
| JP3220617B2 JP3220617B2 (en) | 2001-10-22 |
Family
ID=13897932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08683795A Expired - Lifetime JP3220617B2 (en) | 1995-04-12 | 1995-04-12 | Hermetic electric compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3220617B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000077400A1 (en) | 1999-06-14 | 2000-12-21 | Matsushita Refrigeration Company | Hermetic compressor |
| JP2003042064A (en) * | 2001-07-31 | 2003-02-13 | Matsushita Refrig Co Ltd | Hermetically closed compressor |
-
1995
- 1995-04-12 JP JP08683795A patent/JP3220617B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000077400A1 (en) | 1999-06-14 | 2000-12-21 | Matsushita Refrigeration Company | Hermetic compressor |
| US6607369B1 (en) | 1999-06-14 | 2003-08-19 | Matsushita Refrigeration Company | Hermetic compressor |
| JP2003042064A (en) * | 2001-07-31 | 2003-02-13 | Matsushita Refrig Co Ltd | Hermetically closed compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3220617B2 (en) | 2001-10-22 |
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