JPH02196189A - Compressor - Google Patents
CompressorInfo
- Publication number
- JPH02196189A JPH02196189A JP1543589A JP1543589A JPH02196189A JP H02196189 A JPH02196189 A JP H02196189A JP 1543589 A JP1543589 A JP 1543589A JP 1543589 A JP1543589 A JP 1543589A JP H02196189 A JPH02196189 A JP H02196189A
- Authority
- JP
- Japan
- Prior art keywords
- muffler
- tail pipe
- sound
- port
- same
- 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
- 239000003507 refrigerant Substances 0.000 abstract description 7
- 238000003466 welding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- 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J、アコン、冷蔵庫等に使用されている密閉型
の圧縮機に関するものであり、特に、低騒音化を図った
密閉型の圧縮機を提供する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hermetic compressor used in electric appliances, air conditioners, refrigerators, etc. In particular, it relates to a hermetic compressor that is designed to reduce noise. provide.
従来の技術
従来の密閉型圧縮機の構造を第5図により説明する。3
1は密閉容器であり、32は密閉容器31に固定された
ステータである。33はロータ、34は回転軸であり、
ロータ33と回転軸34は正大固定されている。37は
シリンダ、35は上軸受、38は下軸受であり、シリン
ダ37は密閉容器31に固定されており、上軸受35及
び下軸受38はシリンダ37にボルト結合しである。Prior Art The structure of a conventional hermetic compressor will be explained with reference to FIG. 3
1 is a closed container, and 32 is a stator fixed to the closed container 31. 33 is a rotor, 34 is a rotating shaft,
The rotor 33 and the rotating shaft 34 are fixed in the correct size. 37 is a cylinder, 35 is an upper bearing, and 38 is a lower bearing. The cylinder 37 is fixed to the closed container 31, and the upper bearing 35 and the lower bearing 38 are bolted to the cylinder 37.
36はマフラーであり、上軸受35に固着されている。36 is a muffler, which is fixed to the upper bearing 35.
39はピストンであり、回転軸34と共に回転する。第
6図は第5図のB部を拡大したマフラー近傍の平面図で
ある。40は上軸受35に設けられた吐出弁であり、4
1はマフラー36に設けられた連通口であり、42はマ
フラー36を上軸受に固定する結合ボルトである。39 is a piston, which rotates together with the rotating shaft 34. FIG. 6 is an enlarged plan view of the area B in FIG. 5 near the muffler. 40 is a discharge valve provided on the upper bearing 35;
1 is a communication port provided in the muffler 36, and 42 is a coupling bolt that fixes the muffler 36 to the upper bearing.
以上のように構成された圧縮機において、その動作を説
明する。The operation of the compressor configured as above will be explained.
まず、シリンダ37で圧縮された冷媒ガスは吐出弁40
に圧力を作用する。吐出弁40はある一定値の圧力以上
になると吐出弁40が開き、冷媒ガスは噴流となってマ
フラー36に流入する。この冷媒ガスは更に連通口41
より密閉容器31に放出される。First, the refrigerant gas compressed in the cylinder 37 is discharged from the discharge valve 40.
Apply pressure to. The discharge valve 40 opens when the pressure exceeds a certain value, and the refrigerant gas flows into the muffler 36 in the form of a jet. This refrigerant gas is further transferred to the communication port 41.
It is released into the closed container 31.
発明が解決しようとする課題
しかし、上記のような従来の構成では、冷媒ガスがマフ
ラー36内に噴流となって流入した時騒音スペクトルが
形成され、マフラー36の共鳴音が大きく励起される。Problems to be Solved by the Invention However, in the conventional configuration as described above, when the refrigerant gas flows into the muffler 36 in the form of a jet, a noise spectrum is formed, and the resonance sound of the muffler 36 is greatly excited.
この音は冷媒ガスと共に連通口41より放出されるため
、密閉容器31は太き(振動し、密閉容器31よりマフ
ラー36の共鳴周波数の騒音が発生する。この騒音の中
で聴感的に問題となるのは共鳴音のうちでも低周波の成
分であり、通常500〜IKHzの周波数成分である。Since this sound is emitted from the communication port 41 together with the refrigerant gas, the sealed container 31 vibrates, and noise at the resonant frequency of the muffler 36 is generated from the sealed container 31.In this noise, there are no auditory problems. This is a low frequency component of the resonance sound, which is usually a frequency component of 500 to IKHz.
マフラー及び密閉容器の共鳴周波数は設計上どうしても
上記周波数領域に存在し、密閉容器及びマフラーの大幅
な寸法変更なしで低騒音化を実現することが要請されて
いる。The resonant frequency of the muffler and the closed container inevitably exists in the above frequency range due to design, and there is a demand for reducing noise without significantly changing the dimensions of the closed container and the muffler.
課題を解決するための手段
上記の課題を解決するために本発明の圧縮機は、マフラ
ーの点対称位置に2個の連通口を配置し、この連通口に
マフラー内の同一点より音波を導く同一長の尾管を設け
たものである。Means for Solving the Problems In order to solve the above problems, the compressor of the present invention arranges two communication ports at point-symmetrical positions in the muffler, and guides sound waves from the same point in the muffler to the communication ports. It is equipped with a tail pipe of the same length.
作 用
本発明は上記した構成によって以下の作用により消音効
果をもたらす。連通口には尾管を介してマフラー内の同
一点の音圧レベルが導かれている。Function The present invention provides a noise reduction effect through the following functions with the above-described configuration. The sound pressure level at the same point in the muffler is guided to the communication port via the tail pipe.
また、連通口はマフラーの点対称位置に2個配置されて
おり、密閉容器に対しても点対称位置となっている。今
、マフラーの1次及び2次の共鳴周波数と密閉容器の1
次共鳴周波数が比較的近い場合、密閉容器の1次の共鳴
モードは正負が点対称に生じるため、2個の連通口から
放射された同位相の音は密閉容器内で干渉し合って小さ
(なるのである。Furthermore, two communication ports are arranged at symmetrical positions on the muffler, and are also symmetrical with respect to the closed container. Now, the primary and secondary resonance frequencies of the muffler and the 1st resonance frequency of the airtight container.
When the second-order resonance frequencies are relatively close, the positive and negative first-order resonance modes of the closed container occur point-symmetrically, so the same-phase sounds emitted from the two communication ports interfere with each other inside the closed container and become small ( It will become.
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。EXAMPLE A compressor according to an example of the present invention will be described below with reference to the drawings.
第3図は圧縮機の断面図で、1は密閉容器であり、2は
密閉容器1に固定されたステータである。FIG. 3 is a sectional view of the compressor, in which 1 is a closed container, and 2 is a stator fixed to the closed container 1.
3はロータ、4は回転軸であり、ロータ3と回転軸4は
圧入固定されている。7はシリンダ、5は上軸受、8は
下軸受でありシリンダ7は密閉容器1に固定されており
、上軸受5及び下軸受8はシリンダ7にボルト結合しで
ある。6はマフラーであり、上軸受5に固着されている
。9はピストンであり、回転軸4とともに回転する。3 is a rotor, 4 is a rotating shaft, and the rotor 3 and the rotating shaft 4 are press-fitted and fixed. 7 is a cylinder, 5 is an upper bearing, and 8 is a lower bearing. The cylinder 7 is fixed to the closed container 1, and the upper bearing 5 and the lower bearing 8 are bolted to the cylinder 7. 6 is a muffler, which is fixed to the upper bearing 5. 9 is a piston, which rotates together with the rotating shaft 4.
第2図は第3図A部を拡大したマフラー近傍の・正面図
である。14は上軸受5に設けられた吐出ガス通路であ
り、15は吐出弁である。第1図は第2図の平面図であ
り、16はマフラー6に設けられた連通口、17はマフ
ラー6にプロジェクション溶接されたカバー 18はマ
フラー6とカバー17により形成される尾管、19は尾
管口である。20はマフラー6と上軸受5を結合する結
合ボルトである。FIG. 2 is an enlarged front view of section A in FIG. 3 near the muffler. 14 is a discharge gas passage provided in the upper bearing 5, and 15 is a discharge valve. 1 is a plan view of FIG. 2, 16 is a communication port provided in the muffler 6, 17 is a cover projection welded to the muffler 6, 18 is a tail pipe formed by the muffler 6 and the cover 17, and 19 is a It is the tail tube opening. A connecting bolt 20 connects the muffler 6 and the upper bearing 5.
次に、この実施例の構成における作用を説明する。シリ
ンダ7で圧縮された冷媒ガスは吐出ガス通路14を介し
てマフラー6に噴流となって流入し、このとき大きな騒
音が発生する。密閉容器1に伝達される音、すなわち連
通口16から放出される音について考えると、連通口1
6の音は同一の尾管口19より尾管18を介して導いて
おり、音圧レベル、位相ともに等しい。このような連通
口16からでた音が密閉容器1の空間に作る音場は、密
閉容器1の1次共鳴周波数の近傍では第4図のようにな
る。第4図の黒丸は連通口16で、第4図の上図は各々
の連通口16から放射された音が形成する音場を示し、
下図はそれらを合成した音場である。正と負の位相をも
つ音が加え合わされ、密閉容器1内では干渉消音される
。Next, the operation of the configuration of this embodiment will be explained. The refrigerant gas compressed in the cylinder 7 flows into the muffler 6 through the discharge gas passage 14 in the form of a jet flow, and at this time, a large noise is generated. Considering the sound transmitted to the airtight container 1, that is, the sound emitted from the communication port 16, the communication port 1
The sounds of No. 6 are led from the same tail tube port 19 through the tail tube 18, and have the same sound pressure level and phase. The sound field created in the space of the closed container 1 by the sound emitted from the communication port 16 is as shown in FIG. 4 in the vicinity of the primary resonance frequency of the closed container 1. The black circles in FIG. 4 are the communication ports 16, and the upper part of FIG. 4 shows the sound field formed by the sound radiated from each communication port 16.
The figure below shows a sound field that combines them. Sounds having positive and negative phases are added together, and the noise is silenced by interference inside the closed container 1.
以上の干渉原理により消音できる共鳴音は、密閉容器1
の1次共鳴音と切欠きを有するマフラー6の1次及び2
次の共鳴音である。これら共鳴音の消音により通常の圧
縮機では3dB (A>の騒音低減効果が得られる。The resonance sound that can be silenced by the above interference principle is
The primary and secondary muffler 6 has a primary resonance sound and a notch.
This is the next resonance. By silencing these resonance sounds, a normal compressor can achieve a noise reduction effect of 3 dB (A>).
発明の効果
本発明は、マフラーに2つの連通口をマフラー中心に対
し点対称位置に設け、この連通口にマフラー内の同一点
より音波を導く尾管を設けることにより、連通口より放
射される音を密閉容器内で干渉消音させるものである。Effects of the Invention The present invention provides two communication ports in a muffler at points symmetrical positions with respect to the center of the muffler, and provides a tail pipe in each of the communication ports to guide sound waves from the same point in the muffler, so that sound waves are radiated from the communication ports. This is to muffle sound by interference within a closed container.
この為、圧縮機の放射する音は大幅に低減され、不快音
を感じさせないエアコンや冷蔵庫を提供できる。Therefore, the sound emitted by the compressor is significantly reduced, making it possible to provide air conditioners and refrigerators that do not cause unpleasant noises.
第1図は本発明の一実施例の圧縮機におけるマフラ一部
平面図、第2図は同縦断正面図、第3図は同圧縮機の全
体構成を示す縦断正面図、第4図は干渉消音を説明する
模式図、第5図は従来の圧縮機の全体構成を示す縦断正
面図、第6図は同圧縮機マフラーの平面図である。
1・・・・・・密閉容器、6・・・・・・マフラー、1
5・・・・・・吐出弁、16・・・・・・連通口、17
・・・・・・カバー 18・・・・・・尾管、19・・
・・・・尾管口。
代理人の氏名 弁理士 粟野重孝 はか1名第2図
第3図
第5図
第4図
G
第6図
C−マフラー
15−一ロkffi斧
IC−一一第110Fig. 1 is a partial plan view of a muffler in a compressor according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional front view of the same, Fig. 3 is a longitudinal sectional front view showing the overall configuration of the compressor, and Fig. 4 is an interference FIG. 5 is a longitudinal sectional front view showing the overall configuration of a conventional compressor, and FIG. 6 is a plan view of the compressor muffler. 1...Airtight container, 6...Muffler, 1
5...Discharge valve, 16...Communication port, 17
...Cover 18 ... Tail pipe, 19 ...
...tail tube opening. Name of agent: Patent attorney Shigetaka Awano (1 person) Fig. 2 Fig. 3 Fig. 5 Fig. 4 G Fig. 6 C-Muffler 15-1 Rokffi Ax IC-11 110
Claims (1)
設け、前記マフラー内空間の同一点の音波を前記連通口
に導く同一長の尾管を設けたことを特徴とする圧縮機。A compressor characterized in that two communication ports are provided on a muffler on a straight line passing through the center of a rotating shaft, and a tail pipe of the same length is provided to guide sound waves at the same point in the muffler interior space to the communication port.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1543589A JPH02196189A (en) | 1989-01-25 | 1989-01-25 | Compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1543589A JPH02196189A (en) | 1989-01-25 | 1989-01-25 | Compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02196189A true JPH02196189A (en) | 1990-08-02 |
Family
ID=11888722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1543589A Pending JPH02196189A (en) | 1989-01-25 | 1989-01-25 | Compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02196189A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003042543A1 (en) * | 2001-11-16 | 2003-05-22 | Lg Electronics Inc. | Muffler for hermetic rotary compressor |
KR100438956B1 (en) * | 2001-12-20 | 2004-07-03 | 주식회사 엘지이아이 | Apparatus for reduce the noise of rotary compressor |
WO2007074637A1 (en) * | 2005-12-28 | 2007-07-05 | Daikin Industries, Ltd. | Compressor |
CN103438005A (en) * | 2013-08-21 | 2013-12-11 | 广东美芝制冷设备有限公司 | Rotary compressor and muffler thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5613565B1 (en) * | 1970-01-22 | 1981-03-30 |
-
1989
- 1989-01-25 JP JP1543589A patent/JPH02196189A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5613565B1 (en) * | 1970-01-22 | 1981-03-30 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003042543A1 (en) * | 2001-11-16 | 2003-05-22 | Lg Electronics Inc. | Muffler for hermetic rotary compressor |
AU2002224180B2 (en) * | 2001-11-16 | 2006-06-01 | Lg Electronics Inc. | Muffler for hermetic rotary compressor |
CN100338365C (en) * | 2001-11-16 | 2007-09-19 | Lg电子株式会社 | Muffler for hermetic rotary compressor |
US7431571B2 (en) | 2001-11-16 | 2008-10-07 | Lg Electronics Inc. | Noise reduction muffler for hermetic rotary compressor |
KR100438956B1 (en) * | 2001-12-20 | 2004-07-03 | 주식회사 엘지이아이 | Apparatus for reduce the noise of rotary compressor |
WO2007074637A1 (en) * | 2005-12-28 | 2007-07-05 | Daikin Industries, Ltd. | Compressor |
US7704060B2 (en) | 2005-12-28 | 2010-04-27 | Daikin Industries, Ltd. | Compressor having muffler outlets orthogonally arranged relative to the suction mouth |
CN103438005A (en) * | 2013-08-21 | 2013-12-11 | 广东美芝制冷设备有限公司 | Rotary compressor and muffler thereof |
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