JPS59105980A - Enclosed type compressor - Google Patents
Enclosed type compressorInfo
- Publication number
- JPS59105980A JPS59105980A JP21658282A JP21658282A JPS59105980A JP S59105980 A JPS59105980 A JP S59105980A JP 21658282 A JP21658282 A JP 21658282A JP 21658282 A JP21658282 A JP 21658282A JP S59105980 A JPS59105980 A JP S59105980A
- Authority
- JP
- Japan
- Prior art keywords
- valve cover
- chamber
- noise
- cover chamber
- wave
- 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
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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0066—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using sidebranch resonators, e.g. Helmholtz resonators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
【発明の詳細な説明】
し発明の技術分野〕
本発明は、たとえばルームクーラに組み込１れる密閉形
圧縮機に係υ、特にバルブカバー内に生じる圧力脈動に
よる騒音を低減させる装置に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a hermetic compressor incorporated in a room cooler, for example, and particularly to a device for reducing noise caused by pressure pulsations occurring within a valve cover.
一般に密閉形圧縮機に組与込まれる圧縮装置は、主軸受
、副軸受およびシリンダを有して構成され、主軸受に設
けた吐出ボートに吐出弁を設けるとともに主軸受にバル
ブカバー？：装着し、吐出ボートから出る吐出ガヌを、
バルブカバーによシ画成される室に導き、吐出ガヌの脈
動の低減化を図り、消音効果を上けるようにしている。Generally, the compression device installed in a hermetic compressor is composed of a main bearing, a sub-bearing, and a cylinder, and a discharge boat is provided on the main bearing with a discharge valve, and a valve cover is attached to the main bearing. : Attach the discharge gun that comes out of the discharge boat,
It is guided into a chamber defined by a valve cover to reduce the pulsation of the discharge gas and improve the sound deadening effect.
しかし上記形式の密閉形圧縮機では、バルブカバーの軸
受への装着により、消音効果が上り、騒音低減には役立
っているが、騒音周波数全域に亘って消背効果が上るわ
けではなく、シリンダで圧縮されたガヌがバルブカバー
室に突入することによって特定の圧力脈動が生じ、ある
特定周波数の騒音が発生している。However, in the hermetic compressor of the above type, the silencing effect is improved by attaching the valve cover to the bearing, and although it is useful for reducing noise, the silencing effect does not increase over the entire noise frequency range, and the cylinder When the compressed gas enters the valve cover chamber, specific pressure pulsations occur, which generates noise at a specific frequency.
そこでバルブカバー室に、一定長さのペイプを連設して
、特定周波数の騒音全低減させる提案もなされているが
、この場合には、吐出ガスのバルブカバー室内での牛後
方向に生じる圧力脈動全低減芒せる効果がめっても、周
方向に生じる圧力脈動を低減きせる効果がほとんどなく
、期待通りの騒音の低減を図シ得ない。Therefore, a proposal has been made to install a certain length of pipe in series in the valve cover chamber to completely reduce noise at a specific frequency. Even if the pulsation is completely reduced, it has almost no effect in reducing the pressure pulsation occurring in the circumferential direction, and the noise cannot be reduced as expected.
本発明は上記した点に鑑みてなちれたもので、バルブカ
バー室内にトラップを設けて、バルブカバー内に生じる
圧力脈動を減らし、騒音を低減せしめるようにした智閉
形圧縮機全提供することを目的とする。The present invention has been developed in view of the above-mentioned points, and an object of the present invention is to provide a smart closed type compressor in which a trap is provided in the valve cover chamber to reduce pressure pulsations occurring within the valve cover and reduce noise. With the goal.
本発明の目的は、バルブカバーによシ画成される案に、
一端金開口しかつ長手方向長さをバルブカバー蚕の平均
円周長さの約Ｖ４に設定した面状空間を連接し、バルブ
カバー室の周方向に生じる圧力脈動を減らし、特定騒音
を低減せしめるようにした密閉形圧縮機によって達成さ
れる。The object of the present invention is to provide a valve cover with a design defined by a valve cover.
A planar space with a metal opening at one end and a longitudinal length set to approximately V4, which is the average circumference length of a valve cover silkworm, is connected to reduce pressure pulsations occurring in the circumferential direction of the valve cover chamber and reduce specific noise. This is achieved using a hermetic compressor.
〔発明の実施例〕 以下本発明の一実７１１＋ｉ例全図面につき説明する。[Embodiments of the invention] Hereinafter, all drawings of an embodiment 711+i of the present invention will be explained.
嘱１図において符号１は上下２つに分割し得る密閉ケー
シングであって、この密閉ケーシング１内の上部には電
動機２が支持されており、この電動機２から下方に延び
る軸３の下端側には偏心した大径部４が一体に形成され
、この大径部４を挾むように軸３が圧縮装置５の主軸受
６および副軸受７に支持てれている。In Figure 1, reference numeral 1 denotes a sealed casing that can be divided into upper and lower halves, and an electric motor 2 is supported at the upper part of the airtight casing 1. An eccentric large diameter portion 4 is integrally formed, and a shaft 3 is supported by a main bearing 6 and a sub bearing 7 of a compression device 5 so as to sandwich this large diameter portion 4.
上記圧縮装置５は、主軸受６、副ＩＩＩＩ］受７および
これらの間に位置するシリンダ８奮治して構成されてお
り、大径部４に外嵌したローラ９に＊接するブレードＩ
Ｏの協働作用で、シリンダ８内に圧縮室全形成している
。The compression device 5 is composed of a main bearing 6, a sub-III bearing 7, and a cylinder 8 located between these.
A compression chamber is completely formed within the cylinder 8 by the cooperation of O.
一方上ｔａＵ主軸受６の適当位置には吐出ポート１】が
設けられておシ、かつその吐出ボート１１には吐出弁１
２が配設芒れている。そして上記主軸受６の吐出弁１２
を含む区域ヲ徨うように略円筒形のバルブカバー１３が
装置され、主小山受６とノ（ルブカノく−１３の間にバ
ルブカバ一室１４ヲ画成している。On the other hand, a discharge port 1] is provided at an appropriate position of the upper TAU main bearing 6, and a discharge valve 1 is provided in the discharge boat 11.
2 is placed awn. And the discharge valve 12 of the main bearing 6
A substantially cylindrical valve cover 13 is installed so as to extend over an area including the valve cover 13, and a valve cover chamber 14 is defined between the main ridge 6 and the nozzle 13.
龍方−ヒ５Ｃバルブカバー１３の吐出弁１２の取付位置
と半径方向対向する位置には、一端を開口したＩくイブ
状部分１５が軸方向に延びるように一体に連接されてい
る。上ｍｌパイプ状部１５の長さＬは、ノクルプカバー
室１４の平均円周長さの約Ｖ４の長さに設定でれている
。At a position radially opposite to the mounting position of the discharge valve 12 of the Ryuho-hi 5C valve cover 13, an I-shaped part 15 with one end open is integrally connected so as to extend in the axial direction. The length L of the upper ml pipe-like portion 15 is set to approximately V4, which is the average circumferential length of the nokulp cover chamber 14.
すなわち吐出ボート１］からノ（ルブカノく一室１４に
導かれたガヌは、第３図で矢示する方向（円周方向）に
伝搬し、ある特定の周波数音もつ圧力脈動波だけが強調
・増幅され、伝搬路方向に停滞する。In other words, the gas guided from the discharge boat 1 to the room 14 propagates in the direction indicated by the arrow in Figure 3 (circumferential direction), and only pressure pulsating waves with a certain frequency sound are emphasized.・It is amplified and stagnates in the direction of the propagation path.
この停滞する波の周波数をｆ、音速２ｃ（ｍ／ｓ）平均
伝搬路長←渣１ｍとすると ｆ”” Ｃ／４ｍ（Ｈｚ
）となる。If the frequency of this stagnant wave is f, the speed of sound is 2c (m/s), and the average propagation path length is 1m, then f"" C/4m (Hz
).
そこでパイプ状部１５の艮＃Ｌｋ平均伝搬路長乙ｍの４
分の１に設定すると、閉止端で反射して開口端に戻って
くる圧力脈動波の位相が逆になり、バルブカバー内の圧
力脈動波が低減し得ることになる。Therefore, the average propagation path length of the pipe-shaped portion 15 is 4.
If it is set to 1/2, the phase of the pressure pulsating waves reflected at the closed end and returning to the open end will be reversed, and the pressure pulsating waves inside the valve cover can be reduced.
次に作用を説明する。Next, the effect will be explained.
吐出ポート１】からバルブカバー室１４に濁−かれたガ
ヌ流け、室１４内において周方向に流れ、特だの周波数
をもつ圧力脈動波が強調増幅されて、騒音発生源となる
が、バルブカバー室１４に連通する・くイブ状部１５の
長さＬが平均伝搬路長の４分の１に設定式れているので
、このパイプ状部１５に入シ込んだ圧力脈動波は、パイ
プ状部１５の閉止端で反射して開口端に戻ってくる間に
圧々脈動波の位相が逆になり、バルブカバー室１４内−
ｉ １ｉｊＪ方向に流れる圧力脈動波と相殺して圧力脈
動波は低減し、特電騒音が抑えられることになる。The turbid flow from the discharge port 1 into the valve cover chamber 14 flows circumferentially within the chamber 14, and the pressure pulsating waves with a particular frequency are emphasized and amplified, becoming a source of noise. Since the length L of the pipe-shaped part 15 communicating with the valve cover chamber 14 is set to one-fourth of the average propagation path length, the pressure pulsating waves that enter the pipe-shaped part 15 are While reflecting at the closed end of the pipe-shaped part 15 and returning to the open end, the phase of the pressure pulsating wave becomes reversed, and the inside of the valve cover chamber 14 -
The pressure pulsation waves are reduced by offsetting the pressure pulsation waves flowing in the i 1 ij J direction, and special electric noise is suppressed.
第４図および第５図は本発明の曲の実施例を示すもので
あって、第４図に示す実施例では、軸受６およびシリン
ダ８に上端を開口し長−ｇＬが１ｍ／４になる孔１６が
形成されパルプカバー室１４に位置する開口端から入り
込んだ圧力脈動波が開口端に戻る際に位相が逆になるよ
うに形成されている。FIGS. 4 and 5 show examples of songs according to the present invention. In the example shown in FIG. 4, the upper ends of the bearing 6 and the cylinder 8 are opened, and the length -gL becomes 1 m/4. The holes 16 are formed so that the pressure pulsating waves entering from the open end located in the pulp cover chamber 14 are reversed in phase when they return to the open end.
また第５図に示す実施例では、軸受６に設けた孔１７に
連通ずるように水平方向に延び一碓閉止ののペイプ１８
が設けられていて、この孔１７プラクバイプ１８の長さ
が１ｍ／４になるように設定されている。In addition, in the embodiment shown in FIG.
is provided, and the length of the hole 17 and the plaque pipe 18 is set to be 1 m/4.
以十述べたように本発明によれＱｌ“、バルブカバー室
に導かれたガス流が円周方向に流れる際に発生する特定
の周波数の騒音を低減し得、しかもバルブカバー室内の
圧力脈動を低減することで、吐出弁の動作が軽快になり
、所要動力の低減、ＣＯＰが向上する等の効果を奏する
。As described above, according to the present invention, it is possible to reduce the noise at a specific frequency that occurs when the gas flow guided into the valve cover chamber flows in the circumferential direction, and also to reduce the pressure pulsations in the valve cover chamber. By reducing the amount, the operation of the discharge valve becomes easier, and the required power is reduced and the COP is improved.
第１図は本発明による密閉形圧縮機の町聞図、第２図は
要部拡大図、第３図は、バルブカバー室内金流れるガス
流を示す図、第４図おより第５図は本発明の簡の災施例
を示す図である。
６・・・主軸受、８・・・シリンダ、１１・・・吐出ボ
ート、１２・・・吐出弁、１３・・・バルブカバー、１
４・・・バルブカバー型、１５・・・パイプ状部。
躬１゛図
躬２回
躬３゛目
８１゛目Figure 1 is a schematic diagram of the hermetic compressor according to the present invention, Figure 2 is an enlarged view of the main parts, Figure 3 is a diagram showing the gas flow inside the valve cover interior, Figures 4 and 5 are FIG. 3 is a diagram showing a simple embodiment of the present invention. 6... Main bearing, 8... Cylinder, 11... Discharge boat, 12... Discharge valve, 13... Valve cover, 1
4...Valve cover type, 15...Pipe shaped part. 1st page, 2nd page, 3rd page, 81st page
Claims (1)
た圧縮装置會備えた密閉形圧縮機において、圧縮装置の
軸受と、この軸受に装置されるバルブカバーの間に形成
される室に、一端上開口しかつ長手力向長さ全バルブカ
バー室の平均円周長さの約Ｖ゛４に設定した節状空間全
連接したことを特徴とする密閉形圧縮機。 ２、筒状空間會バルブカバーに溶看したペイプで形成し
たこと全特徴とする特許請求の範囲第１項記載の密閉形
圧縮機。 ３８商状空間を軸受にノ股した孔で形成したこと全特徴
とする特許請求の範囲第１項記載の密閉形圧縮機。[Claims] 1. *In a hermetic compressor equipped with an electric motor and a compression device directly connected to the electric motor in a closed casing, a compressor formed between a bearing of the compression device and a valve cover installed on this bearing. A hermetic compressor characterized in that a nodal space which is open at one end and whose length in the longitudinal direction is set to approximately V4, which is the average circumferential length of the entire valve cover chamber, is fully connected to the chamber. 2. The hermetic compressor according to claim 1, characterized in that the cylindrical space valve cover is made of fused paper. 3. The hermetic compressor according to claim 1, wherein the space is formed by a hole extending through the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21658282A JPS59105980A (en) | 1982-12-10 | 1982-12-10 | Enclosed type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21658282A JPS59105980A (en) | 1982-12-10 | 1982-12-10 | Enclosed type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59105980A true JPS59105980A (en) | 1984-06-19 |
| JPH028156B2 JPH028156B2 (en) | 1990-02-22 |
Family
ID=16690670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21658282A Granted JPS59105980A (en) | 1982-12-10 | 1982-12-10 | Enclosed type compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59105980A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781545A (en) * | 1985-09-30 | 1988-11-01 | Kabushiki Kaisha Toshiba | Rotary compressor with sound suppression tubular cavity section |
| EP0644332A1 (en) * | 1993-09-18 | 1995-03-22 | SIHI GmbH & Co KG | Liquid ring gas pump with noise suppression device |
| US11585344B2 (en) * | 2020-01-10 | 2023-02-21 | Lg Electronics Inc. | Compressor provided with a muffler |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53127311U (en) * | 1977-03-18 | 1978-10-09 | ||
| JPS57220U (en) * | 1980-05-29 | 1982-01-05 |
-
1982
- 1982-12-10 JP JP21658282A patent/JPS59105980A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53127311U (en) * | 1977-03-18 | 1978-10-09 | ||
| JPS57220U (en) * | 1980-05-29 | 1982-01-05 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781545A (en) * | 1985-09-30 | 1988-11-01 | Kabushiki Kaisha Toshiba | Rotary compressor with sound suppression tubular cavity section |
| EP0644332A1 (en) * | 1993-09-18 | 1995-03-22 | SIHI GmbH & Co KG | Liquid ring gas pump with noise suppression device |
| US11585344B2 (en) * | 2020-01-10 | 2023-02-21 | Lg Electronics Inc. | Compressor provided with a muffler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028156B2 (en) | 1990-02-22 |
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