JPS6368794A - Rotary compressor - Google Patents

Rotary compressor

Info

Publication number
JPS6368794A
JPS6368794A JP21355586A JP21355586A JPS6368794A JP S6368794 A JPS6368794 A JP S6368794A JP 21355586 A JP21355586 A JP 21355586A JP 21355586 A JP21355586 A JP 21355586A JP S6368794 A JPS6368794 A JP S6368794A
Authority
JP
Japan
Prior art keywords
pipe
outer box
cylinder
discharge pipe
rotary compressor
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
Application number
JP21355586A
Other languages
Japanese (ja)
Inventor
Katsuji Katayama
片山 勝司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP21355586A priority Critical patent/JPS6368794A/en
Publication of JPS6368794A publication Critical patent/JPS6368794A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To enable to eliminate the sound having the specified frequency, taking advantage of an upper space within a closed vessel, by installing a resonant silencer to a discharge pipe provided in the closed vessel and situating a case of the resonant silencer at an upper space within the closed vessel. CONSTITUTION:A motor part 5 and a compressor part 6 are provided at the upper and lower parts in a vessel 2, respectively. The compressor part 6 consists of a cylinder part 7, a piston 11, which eccentrically rotates within the cylinder 7 owing to an eccentric member 9 attached to a rotating shaft 8, etc. Meanwhile, an upper cover 1, which closes up the vessel 2 tightly, is provided with a discharge pipe 19. In this constitution, a resonant silencer 21 is attached to the discharge pipe 19 being situated in the vessel 2. The resonant silencer 21 consists of a plurality of holes 22, which are formed at the lower end of the discharge pipe 19, and a closed, cylindrical outer-box 23, which is provided in such a manner that the said holes 22 are situated within the box 23. At this time, the axis of the outer box 23 should be perpendicular to the axis of the discharge pipe 19.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、例えばルームエアコンや冷蔵庫等に用いら
れているロータリコンプレッサに関し、特に詳しく言う
と圧縮機部のシリンダ内の圧縮された冷媒の吐出時に発
生する騒音を低減する消音装置付ロータリコンプレッサ
に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rotary compressor used, for example, in a room air conditioner or a refrigerator. This invention relates to a rotary compressor with a silencer that reduces the noise that occurs when the compressor is in use.

〔発明の技術的背景〕[Technical background of the invention]

ロータリコンプレッサは、圧縮機部のシリンダ内で偏心
回転する偏心部材によって圧縮された冷媒の吐出を制御
するため、シリンダの開口部を覆う軸受部材の吐出孔に
吐出弁を設け、この吐出弁の開閉によって高圧ガス冷媒
を吐出している。この吐出ガスは毎分3,000回程度
の脈動流であるためロータリコンプレッサの最大の騒音
となっている。
In order to control the discharge of refrigerant compressed by an eccentric member rotating eccentrically within the cylinder of the compressor, a rotary compressor is equipped with a discharge valve in the discharge hole of a bearing member that covers the opening of the cylinder, and this discharge valve is opened and closed. The high-pressure gas refrigerant is discharged by the This discharged gas is a pulsating flow of about 3,000 times per minute, which causes the largest noise of the rotary compressor.

そこで、従来より吐出弁上を覆うようにカップ状のマフ
ラ一部材を設け、このマフラ一部材に複数の排出孔を軸
心に対して対称的に設け、これら排出孔から吐出された
圧力脈動による密閉容器内の空間に生ずる共鳴モードが
互いに逆位相関係になるようにして、排出孔からの圧力
脈動を相殺して消音することが提案されている。
Therefore, conventionally, a cup-shaped muffler member is provided to cover the discharge valve, and a plurality of discharge holes are provided in this muffler member symmetrically with respect to the axis. It has been proposed that the resonance modes generated in the space inside the closed container be in an antiphase relationship with each other to cancel out the pressure pulsations from the exhaust hole and muffle the noise.

しかしながら、シリンダ内で発生する脈動流成分中には
、圧縮工程から吐出工程に至る領域における高い周波数
成分の圧力脈動成分を有し、この成分はレベルが大きく
、上述したようなマフラ一部材では処理できず、騒音の
大きな原因となっている。
However, the pulsating flow component generated within the cylinder includes a pressure pulsating component with a high frequency component in the region from the compression process to the discharge process, and this component has a large level and cannot be processed by the muffler member as described above. This is a major cause of noise.

そこで一端がシリンダ室、あるいはマフラ一部材によっ
て構成される消音室内に開口する共鳴消音器を設けるこ
とが提案されている。このような共鳴消音器は直径の小
さい共鳴通路とこの共鳴通路に連通ずる共鳴空洞から構
成され、これらをシリンダの内周面あるいはマフラ一部
材を覆う軸受部材中に一体的に設けたり、全く別個に構
成し、これを消音室内に設置するようにしている。
Therefore, it has been proposed to provide a resonant muffler whose one end opens into a cylinder chamber or a muffler chamber formed by a muffler member. Such a resonant muffler consists of a resonant passage with a small diameter and a resonant cavity that communicates with the resonant passage, and these can be provided integrally in a bearing member that covers the inner peripheral surface of the cylinder or a muffler member, or they can be installed completely separately. This system is configured to be installed in a sound-deadening room.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、シリンダの内周面あるいは軸受部材中に
所望の軸方向長さの共鳴通路と所望の容積の共鳴空洞を
設けることはその構造上かなり制約されてしまうばかり
でなく、製作工程が複雑になってしまう。また、共鳴消
音器を別個に設けることは、比較的大きい容積の共鳴空
洞が消音室内に位置するため消音室の面積を小さくして
しまう。
However, providing a resonant passage with a desired axial length and a resonant cavity with a desired volume in the inner circumferential surface of the cylinder or in the bearing member not only imposes considerable restrictions on its structure, but also complicates the manufacturing process. It ends up. Furthermore, providing a separate resonant muffler reduces the area of the muffler chamber because a relatively large volume of the resonant cavity is located within the muffler chamber.

この発明の目的は、密閉容器内の上部に空隙があること
に着目し、この空隙を有効に利用して所望の周波数音を
消去することができる共鳴消音器を備えた消音装置を提
供することである。
An object of the present invention is to provide a sound muffling device equipped with a resonant muffler that can effectively utilize this void to eliminate sounds of a desired frequency by focusing on the fact that there is a void in the upper part of a closed container. It is.

〔問題を解決するための手段〕[Means to solve the problem]

この発明のロータリコンプレッサは、吐出口をその下端
部が密閉容器内に位置するように設けたパイプで構成し
、このパイプの下端部に間隔を置いて設けられた複数個
の孔と、パイプの孔の部分を間隙を置いて取り囲むよう
に設けられた外箱とで構成された共鳴消音器を密閉容器
内に位置する前記パイプに設けたものである。
The rotary compressor of the present invention includes a pipe having a discharge port with its lower end located inside a closed container, and a plurality of holes provided at intervals in the lower end of the pipe, and a plurality of holes provided at intervals in the lower end of the pipe. A resonant muffler is provided on the pipe located inside the closed container, and includes an outer box surrounding the hole with a gap in between.

〔作   用〕[For production]

共鳴消音器は密閉容器内の吐出パイプに取付けられ、か
つ外箱は密閉容器内の上部の空間に位置するので、従来
のロータリコンプレッサを大型化することなく容易に設
けることができる。
Since the resonance muffler is attached to the discharge pipe inside the closed container, and the outer box is located in the upper space inside the closed container, it can be easily installed without increasing the size of a conventional rotary compressor.

消音すべき周波数は、穴の面積、その数、そして外箱の
体積によって設定できる。すなわち、消音しようとする
周波数をfとすれば。
The frequency to be muted can be set by the area of the holes, their number, and the volume of the outer box. That is, if the frequency to be muted is f.

但しGo= n S/ t + 0.88の関係にある
。ここで、Cは音速、Sは穴の面積、先は吐出パイプの
肉厚、モして■は外箱の体積である。したがって、所望
の周波数にしたがってこの式にしたがって穴の数や外箱
の体積を設定すればよい。
However, there is a relationship of Go=nS/t+0.88. Here, C is the speed of sound, S is the area of the hole, the tip is the thickness of the discharge pipe, and 2 is the volume of the outer box. Therefore, the number of holes and the volume of the outer box may be set according to this formula according to the desired frequency.

〔実 施 例〕〔Example〕

以下、この発明を図面に示す実施例について説明する。 Hereinafter, embodiments of the present invention shown in the drawings will be described.

まず、第1図および第2図によりこの発明の第1実施例
について説明すると、上蓋1により密閉された容器2内
には、その上部にロータ3とステータ4とで構成された
電動機部5が、そしてその下部には電動機部5により駆
動される圧縮機部6が収納固定されている。圧縮機部6
は、シリンダ7と、回転軸8に偏心的に取付けられた偏
心部材9によりシリンダ7内を偏心回転するピストン1
1と、上下開口部を覆う上下軸受部材12.13とを有
している。14は上部軸受部材12を覆うように皿形を
した吐出マフラ部材である。シリンダ7には水平に延在
する吸入孔15が設けられており、この吸入孔15は容
器2の側面にその一端が支持固定された吸入管16に連
通している。上部軸受部材12には吐出孔17が形成さ
れており、この吐出孔17には吐出弁18が設けられて
いる。上蓋1には吐出パイプ19が取付られている。こ
のような構成はロータリコンプレッサにおいては周知で
あるので、詳細な説明は省略する。
First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. Inside a container 2 that is sealed with an upper lid 1, an electric motor section 5 consisting of a rotor 3 and a stator 4 is installed above the container 2. , and a compressor section 6 driven by an electric motor section 5 is housed and fixed at the bottom thereof. Compressor section 6
The piston 1 rotates eccentrically within the cylinder 7 by a cylinder 7 and an eccentric member 9 eccentrically attached to a rotating shaft 8.
1 and upper and lower bearing members 12 and 13 that cover the upper and lower openings. 14 is a dish-shaped discharge muffler member that covers the upper bearing member 12. The cylinder 7 is provided with a horizontally extending suction hole 15, and this suction hole 15 communicates with a suction pipe 16 whose one end is supported and fixed to the side surface of the container 2. A discharge hole 17 is formed in the upper bearing member 12, and a discharge valve 18 is provided in the discharge hole 17. A discharge pipe 19 is attached to the upper lid 1. Since such a configuration is well known in rotary compressors, detailed explanation will be omitted.

共鳴消音器21は容器2内に位置する吐出パイプ19に
取付けられており、その詳細は第2図に示されている。
The resonant muffler 21 is attached to the discharge pipe 19 located within the container 2, the details of which are shown in FIG.

すなわち、吐出パイプ19の下端部に穿孔等により形成
された複数個の穴22と、これら穴22をその内部に位
置するように設けられた円筒状でかつ密閉された外箱2
3とから構成されている。
That is, a plurality of holes 22 are formed at the lower end of the discharge pipe 19 by drilling or the like, and a cylindrical and sealed outer box 2 is provided so that these holes 22 are located inside.
It is composed of 3.

外箱23はその軸線が吐出パイプ19の軸線に対し直交
する方向に延在するように配置されている。
The outer box 23 is arranged so that its axis extends in a direction perpendicular to the axis of the discharge pipe 19.

このように共鳴消音器21の外箱23は密閉容器2内の
吐出パイプ19に取付けられており、かつ、略垂直に設
けられた吐出パイプ19に対して外箱23の軸線を略直
交するように設けている。したがって、外箱23の最大
軸方向長さはほぼ密閉容器2の内径よりわずかに短かい
長さまで設定できるので、外M23の体積設計における
許容値は大きくとることができ、所望の周波数音の消去
を行なうことができる。
In this way, the outer box 23 of the resonance muffler 21 is attached to the discharge pipe 19 in the closed container 2, and is arranged so that the axis of the outer box 23 is substantially orthogonal to the discharge pipe 19, which is provided substantially perpendicularly. It is set up in Therefore, the maximum axial length of the outer box 23 can be set to a length that is approximately slightly shorter than the inner diameter of the sealed container 2, so a large allowable value can be taken in the volume design of the outer M23, and the desired frequency sound can be suppressed. can be done.

第3図はこの発明の第2実施例として、吐出パイプ25
を水平部26と、この水平部26の一端に設けられた吐
出側となる立上り部27そして水平部26の他端に設け
られた吸入側となる立下り部28とを有するように構成
して、水平部26に共鳴消音器を設けたものである。吐
出パイプ25の立上り部27が上蓋1から外部に開口す
るように取付けられる。外箱29はその軸線が水平部2
6の軸線と同一となるように取付けられている。このよ
うに構成することにより、共鳴消音器の穴22を上述第
1実施例より数多く設けることができる。
FIG. 3 shows a discharge pipe 25 as a second embodiment of the invention.
is configured to have a horizontal portion 26, a rising portion 27 provided at one end of the horizontal portion 26 and serving as a discharge side, and a falling portion 28 provided at the other end of the horizontal portion 26 serving as a suction side. , a resonant muffler is provided in the horizontal section 26. The discharge pipe 25 is attached so that the rising portion 27 opens from the upper lid 1 to the outside. The axis of the outer box 29 is in the horizontal part 2
It is attached so that it is the same as the axis of 6. With this configuration, more holes 22 in the resonance muffler can be provided than in the first embodiment.

第4図は、この発明の第3実施例を示しており、この実
施例おいては、外箱31を略皿形をした容器で構成し、
その上部開口は上蓋1の内面によって密閉されている。
FIG. 4 shows a third embodiment of the present invention, in which the outer box 31 is composed of a substantially dish-shaped container,
The upper opening is sealed by the inner surface of the upper lid 1.

これにより外箱31の体積は上述筒1および第2実施例
より大きく設定できるとともに、外箱31のフランジ部
32をロウ付は等により上蓋1の内面に固定するだけで
よいので、その取付けはきわめて簡単である。
As a result, the volume of the outer box 31 can be set larger than that of the above-mentioned cylinder 1 and the second embodiment, and the flange portion 32 of the outer box 31 only needs to be fixed to the inner surface of the upper lid 1 with brazing or the like. It's extremely simple.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明のロータリコンプレッサの共鳴
消音器は、密閉容器内の吐出パイプに取付けられ、かつ
外箱は密閉容器内の上部の空間に位置するので、密閉容
器内の上部空隙を有効に利用して設けることができ、そ
の構成も吐出パイプに複数の穴を設け、これら穴の部分
を間隔をおいて覆うように外箱を設けるという簡単な構
成でよいので、安価に製作できる。更に、既存のコンプ
レッサにも容易に取付は可能であり、この共鳴消音器を
設けることにより、新たにコンプレッサ全体の設計変更
を行なう必要はない。
As described above, the resonant muffler for a rotary compressor of the present invention is attached to the discharge pipe inside the hermetic container, and the outer box is located in the upper space inside the hermetic container, so that the upper space inside the hermetic container is effectively used. It can be manufactured at low cost because it has a simple structure of providing a plurality of holes in the discharge pipe and providing an outer box so as to cover the holes at intervals. Furthermore, it can be easily attached to an existing compressor, and by providing this resonant muffler, there is no need to redesign the entire compressor.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、この発明の第1実施例を示す一切断側面図、
第2図はその共鳴消音器を示す斜視図、第3図はこの発
明の第2実施例における共鳴消音器を示す斜視図、第4
図はこの発明の第3実施例における共鳴消音を示す斜視
図である。 図面において、1は上蓋、2は密閉容器、19は吐出パ
イプ、22は穴、23は外箱である。
FIG. 1 is a cutaway side view showing a first embodiment of the invention;
FIG. 2 is a perspective view showing the resonance muffler, FIG. 3 is a perspective view showing the resonance muffler according to the second embodiment of the invention, and FIG.
The figure is a perspective view showing resonance silencing in a third embodiment of the invention. In the drawings, 1 is an upper lid, 2 is a closed container, 19 is a discharge pipe, 22 is a hole, and 23 is an outer box.

Claims (4)

【特許請求の範囲】[Claims] (1)その上部に吐出口が下部に吸入口が設けられた密
閉容器内に設けられ、その外周面に一体的に形成された
突出部先端を前記密閉容器の内周面に固定することによ
り支持され、その内をピストンが偏心回転するシリンダ
と、このシリンダの開口部を覆うように設けられ、前記
シリンダ内と連通する吐出孔を備えたカバー部材とを有
するロータリコンプレッサにおいて、前記吐出口をその
下端部が前記密閉容器内に位置するように設けたパイプ
で構成し、このパイプの前記下端部に間隔を置いて設け
られた複数個の孔と、前記パイプの前記孔の部分を間隙
を置いて取り囲むように設けられた外箱とで構成された
共鳴消音器を前記密閉容器内に位置する前記パイプに設
けたことを特徴とするロータリコンプレッサ。
(1) By fixing the tip of a protrusion integrally formed on the outer circumferential surface of the closed container, which is provided in an airtight container having a discharge port at the top and an intake port at the bottom, to the inner circumference of the airtight container. A rotary compressor having a supported cylinder in which a piston rotates eccentrically, and a cover member provided to cover an opening of the cylinder and having a discharge hole communicating with the inside of the cylinder, wherein the discharge port is connected to the cylinder. It is composed of a pipe provided such that its lower end is located inside the airtight container, and a plurality of holes provided at intervals in the lower end of the pipe, and a portion of the hole of the pipe with a gap between the holes. A rotary compressor characterized in that a resonant muffler configured with an outer box placed so as to surround the pipe is provided on the pipe located inside the closed container.
(2)特許請求の範囲第1項において、前記外箱は両端
が閉じられた略円筒状をしており、その軸線は前記パイ
プの軸線に対し略直交するように位置していることを特
徴とするロータリコンプレッサ。
(2) Claim 1 is characterized in that the outer box has a substantially cylindrical shape with both ends closed, and its axis is located substantially orthogonal to the axis of the pipe. rotary compressor.
(3)特許請求の範囲第1項において、前記パイプは前
記密閉容器内に略水平に位置する部分を有し、前記外箱
は両端が閉じられた略円筒状をしており、前記外箱は前
記パイプの前記水平部分にその軸線がこの水平部分の軸
線と同一となるように取付けられていることを特徴とす
るロータリコンプレッサ。
(3) In claim 1, the pipe has a portion located substantially horizontally within the closed container, the outer box has a substantially cylindrical shape with both ends closed, and the outer box has a substantially cylindrical shape with both ends closed. A rotary compressor, characterized in that the rotary compressor is attached to the horizontal portion of the pipe so that its axis is the same as the axis of the horizontal portion.
(4)特許請求の範囲第1項において、前記外箱は上部
が開口した矩形あるいは円筒形をしており、その開口部
は前記密閉容器の上部内面により密閉されていることを
特徴とするロータリコンプレッサ。
(4) The rotary rotary vehicle according to claim 1, wherein the outer box has a rectangular or cylindrical shape with an open top, and the opening is sealed by the inner surface of the top of the airtight container. compressor.
JP21355586A 1986-09-10 1986-09-10 Rotary compressor Pending JPS6368794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21355586A JPS6368794A (en) 1986-09-10 1986-09-10 Rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21355586A JPS6368794A (en) 1986-09-10 1986-09-10 Rotary compressor

Publications (1)

Publication Number Publication Date
JPS6368794A true JPS6368794A (en) 1988-03-28

Family

ID=16641144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21355586A Pending JPS6368794A (en) 1986-09-10 1986-09-10 Rotary compressor

Country Status (1)

Country Link
JP (1) JPS6368794A (en)

Similar Documents

Publication Publication Date Title
US6176688B1 (en) Discharge muffler arrangement
JP3390593B2 (en) Hermetic compressor
WO2007010668A1 (en) Rotary compressor
JP2000018184A (en) Rotary compressor
JPH05133377A (en) Closed type compressor
JPS6368794A (en) Rotary compressor
JPS6039517Y2 (en) Silencer for hermetic compressor
JPH10184542A (en) Muffler for closed type compressor, and closed type compressor provided with muffler
JPS5827047Y2 (en) Silencer for hermetic compressor
KR100533045B1 (en) Scroll compressor with function of noise attenuation
JP2815873B2 (en) Silencer for hermetic compressor
JPH06257896A (en) Gas-liquid separator
JPH0154560B2 (en)
JPH03107594A (en) Silencer of compressor
JPH08200272A (en) Silencer device for rotary compressor
JPH0324876Y2 (en)
JP3116605B2 (en) Hermetic electric compressor
JPS587048Y2 (en) hermetic compressor
JPS6132157Y2 (en)
JPS5830083Y2 (en) Silencer for hermetic compressor
JPS5842570Y2 (en) Silencer for hermetic compressor
JPS5830084Y2 (en) Silencer for hermetic compressor
JPH0658283A (en) Muffler for rotary compressor
JPS6143292A (en) Rotary compressor
JP2986230B2 (en) Rotary hermetic compressor