JPH0610875A - Silencer for compressor - Google Patents
Silencer for compressorInfo
- Publication number
- JPH0610875A JPH0610875A JP16570192A JP16570192A JPH0610875A JP H0610875 A JPH0610875 A JP H0610875A JP 16570192 A JP16570192 A JP 16570192A JP 16570192 A JP16570192 A JP 16570192A JP H0610875 A JPH0610875 A JP H0610875A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- silencer
- delivery
- connecting pipe
- 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
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は冷凍冷蔵装置に用いられ
る圧縮機の低騒音化に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to noise reduction of a compressor used in a refrigerating machine.
【0002】[0002]
【従来の技術】冷凍冷蔵装置に用いられる圧縮機は、冷
媒をシリンダ内で圧縮し、冷却システムへ吐出するた
め、冷媒に圧力脈動が生じ圧縮機や配管さらには冷却機
器等を振動させて大きな騒音を発生していた。そのた
め、従来よりシリンダ内で圧縮された冷媒が吐出される
直後に消音器を設けたり、それでも圧力脈動を抑制でき
なければ、もう1つ消音器を設けて騒音低減を図る方法
が取られていた。2. Description of the Related Art A compressor used in a refrigerating and refrigerating apparatus compresses a refrigerant in a cylinder and discharges it to a cooling system. Therefore, pressure pulsation occurs in the refrigerant, which vibrates the compressor, piping, cooling equipment, etc. It was making noise. Therefore, conventionally, a muffler is provided immediately after the refrigerant compressed in the cylinder is discharged, or if the pressure pulsation cannot be suppressed, another muffler is provided to reduce noise. .
【0003】以下、図面を参照しながら上述した従来の
圧縮機の消音器の一例について説明する。An example of the conventional silencer for a compressor described above will be described below with reference to the drawings.
【0004】図4、図5、図6は従来の圧縮機の消音器
の1例を示すもので、1は圧縮機で、2は密閉ケース、
3はステータで密閉ケース2に焼嵌め固定されている。
4はロータでクランクシャフト5と連結されている。6
はロータリ型のピストンで、7はシリンダである。8は
ロータ側の軸受で、密閉ケース2に溶接固定されてい
る。9はシャフト端部の軸受で9aはバルブ(図示せ
ず)を装着する凹陥部である。 10aは吐出チャンバ
ーであり軸受9にカップ状の吐出カバー10を固定する
ことにより構成される。吐出カバー10には吐出穴10
bが設けられ、接続配管11の接合部11aが圧入固定
されている。また、軸受9の凹陥部9aと吐出チャンバ
ー10aとで第1消音器12を構成している。13は吐
出チャンバー13aに接続配管11が1/2挿入され、
かつ冷却システムに継接している尾管14が1/4挿入
されて構成される第2消音器である。FIG. 4, FIG. 5 and FIG. 6 show an example of a silencer of a conventional compressor, where 1 is a compressor and 2 is a closed case,
A stator 3 is shrink-fitted and fixed to the closed case 2.
A rotor 4 is connected to the crankshaft 5. 6
Is a rotary type piston, and 7 is a cylinder. Reference numeral 8 denotes a rotor-side bearing, which is welded and fixed to the closed case 2. Reference numeral 9 is a bearing at the end of the shaft, and 9a is a recess for mounting a valve (not shown). A discharge chamber 10a is constituted by fixing a cup-shaped discharge cover 10 to the bearing 9. The discharge hole 10 is formed in the discharge cover 10.
b is provided, and the joint portion 11a of the connection pipe 11 is press-fitted and fixed. The recess 9a of the bearing 9 and the discharge chamber 10a form a first silencer 12. 13 is the discharge chamber 13a, the connection pipe 11 is 1/2 inserted
Further, it is the second silencer configured by inserting the tail pipe 14 connected to the cooling system by ¼.
【0005】以上のように構成された圧縮機の消音器に
おいて、以下その動作を説明するシリンダ7内で圧縮さ
れた冷媒ガスは軸受9の凹陥部9aのバルブ(図示せ
ず)を介して吐出チャンバー10aに一端吐出され、ま
た吐出カバー10に設けられた吐出孔10bより、接続
配管11を介して吐出チャンバー13aに吐出され、さ
らに尾管14より冷却システムに導かれる。In the muffler of the compressor constructed as described above, the refrigerant gas compressed in the cylinder 7 whose operation will be described below is discharged through the valve (not shown) in the recess 9a of the bearing 9. It is discharged to the chamber 10a at one end, discharged from the discharge hole 10b provided in the discharge cover 10 to the discharge chamber 13a through the connection pipe 11, and further guided to the cooling system from the tail pipe 14.
【0006】そのため、凹陥部9aと吐出チャンバー1
0aとで構成される第1消音器12と第2消音器13は
膨張型の消音器として作用し、冷媒が吐出チャンバー1
0a、13aを通過する際に冷媒の圧力脈動は減衰され
る。特に第2消音器13は1/2挿入と1/4挿入の効
果により脈動減衰効果を高め、さらに第1消音器12と
第2消音器13とで2段消音器構造となり、さらに脈動
減衰効果を高めている。従って、冷却システムに導かれ
る圧縮冷媒ガスの圧力脈動成分は十分減少され、騒音の
発生を減少することができる。Therefore, the recess 9a and the discharge chamber 1
The first muffler 12 and the second muffler 13 composed of 0a function as expansion mufflers, and the refrigerant is discharged from the discharge chamber 1
The pressure pulsation of the refrigerant is attenuated when passing through 0a and 13a. Particularly, the second silencer 13 enhances the pulsation damping effect by the effect of 1/2 insertion and 1/4 insertion, and the first silencer 12 and the second silencer 13 have a two-stage silencer structure, and further the pulsation damping effect. Is increasing. Therefore, the pressure pulsation component of the compressed refrigerant gas guided to the cooling system is sufficiently reduced, and the generation of noise can be reduced.
【0007】[0007]
【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、第1消音器12と第2消音器13は2段
消音器の構成をしており、2つの消音器間において吐出
チャンバー10a、13aが腹となり、接続配管11が
節となる気柱共鳴モードが発生し、この共鳴周波数が圧
力脈動成分の最も大きい基本波に近接した場合、消音効
果を著しく低下させるという問題があった。However, in the above-mentioned configuration, the first silencer 12 and the second silencer 13 have a two-stage silencer configuration, and the discharge chamber 10a, between the two silencers, When the air column resonance mode in which 13a becomes an antinode and the connection pipe 11 serves as a node occurs and the resonance frequency approaches the fundamental wave having the largest pressure pulsation component, there is a problem that the sound deadening effect is significantly reduced.
【0008】本発明は上記問題点に鑑み、2つの消音器
間の共鳴を圧力脈動基本波周波数から回避させ気柱共鳴
による消音効果の低下を防止し、圧縮機騒音の低減を図
ることを目的としている。In view of the above problems, it is an object of the present invention to avoid the resonance between two silencers from the pressure pulsation fundamental wave frequency to prevent a reduction in the silencing effect due to air column resonance and to reduce the compressor noise. I am trying.
【0009】[0009]
【課題を解決するための手段】上記目的を達成するため
に本発明の圧縮機の消音器は、電動圧縮要素と、電動圧
縮要素の吐出穴と連通する第1消音器と、第1消音器と
接続配管を介して連通する第2消音器を備え、接続配管
にチャンバーを設けたものである。In order to achieve the above object, a muffler of a compressor according to the present invention comprises an electric compression element, a first silencer communicating with a discharge hole of the electric compression element, and a first silencer. And a second silencer communicating with the connection pipe via a connection pipe, and the connection pipe is provided with a chamber.
【0010】また、接続配管に設けたチャンバーを接続
配管の膨管により形成するものである。Further, the chamber provided in the connection pipe is formed by the expansion pipe of the connection pipe.
【0011】[0011]
【作用】本発明は上記した構成によって、接続配管に設
けられたチャンバーにより、第1消音器または第2消音
器の音響バネが柔らかくなり、第1消音器と第2消音器
間で発生する気柱共鳴周波数が著しく低下し、圧力脈動
基本波周波数から大幅に回避させると共に全体的に圧力
脈動の減衰効果を高めることができる。According to the present invention, due to the above structure, the chamber provided in the connecting pipe softens the acoustic spring of the first silencer or the second silencer, and the air generated between the first silencer and the second silencer is generated. The column resonance frequency is remarkably lowered, the pressure pulsation fundamental wave frequency can be largely avoided, and the pressure pulsation damping effect can be enhanced overall.
【0012】また、接続配管に設けられたチャンバーを
接続配管の膨管により形成することにより、溶接等の必
要がなく信頼性を向上させる他、低コストで簡単に組み
立てることができる。Further, by forming the chamber provided in the connection pipe by the expansion pipe of the connection pipe, it is possible to improve reliability without the need for welding and to easily assemble at a low cost.
【0013】[0013]
【実施例】以下本発明の一実施例の圧縮機の消音器につ
いて図面を参照しながら説明する。尚、説明の重複を避
けるため、従来例と同一部分については同一符号を付し
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A muffler for a compressor according to an embodiment of the present invention will be described below with reference to the drawings. In order to avoid duplication of description, the same parts as those of the conventional example will be denoted by the same reference numerals.
【0014】図1において、15は接続配管11に設け
られたチャンバーであり、溶接等により密封形成され、
密閉ケース2内に配設されている。In FIG. 1, reference numeral 15 denotes a chamber provided in the connection pipe 11, which is hermetically formed by welding or the like.
It is arranged in the closed case 2.
【0015】以上のように構成された一実施例における
動作を説明する。シリンダ7内で圧縮された冷媒ガスは
軸受9の凹陥部9aのバルブ(図示せず)を介して吐出
チャンバー10aに一端吐出され、また吐出カバー10
に設けられた吐出孔10bより、接続配管11を介して
チャンバー15に吐出され、さらに接続配管11により
吐出チャンバー13aに吐出し尾管14より冷却システ
ムに導かれる。The operation of the embodiment configured as described above will be described. The refrigerant gas compressed in the cylinder 7 is once discharged to the discharge chamber 10a through a valve (not shown) in the recess 9a of the bearing 9, and the discharge cover 10
The gas is discharged into the chamber 15 through the connection pipe 11 from the discharge hole 10b provided in, and further discharged into the discharge chamber 13a through the connection pipe 11 and guided to the cooling system through the tail pipe 14.
【0016】かかる過程において、シリンダ7内で発生
した圧力脈動は、凹陥部9aと吐出チャンバー10aと
で構成される第1消音器12、第2消音器13とチャン
バー15は膨張型の消音器として作用し、冷媒が吐出チ
ャンバー10a、13a、チャンバー15を通過する際
に冷媒の圧力脈動は減衰される。In this process, the pressure pulsation generated in the cylinder 7 causes the first muffler 12, the second muffler 13 and the chamber 15 constituted by the concave portion 9a and the discharge chamber 10a to be an expansion muffler. As a result, the pressure pulsation of the refrigerant is attenuated when the refrigerant passes through the discharge chambers 10a, 13a and the chamber 15.
【0017】ここで、従来、吐出チャンバー10a、1
3aが腹となり接続配管11が節となる気柱共鳴モード
の周波数が圧力脈動基本波周波数に近接していたが、チ
ャンバー15により第1消音器の音響バネが柔らかくな
り、気柱共鳴周波数は著しく低下する。そのため、圧力
脈動基本波周波数から気柱共鳴周波数を大幅に回避する
ことができ、基本波周波数近傍における消音効果を向上
させることができる。Here, conventionally, the discharge chambers 10a, 1
Although the frequency of the air column resonance mode in which 3a is the belly and the connection pipe 11 is the node is close to the pressure pulsation fundamental wave frequency, the acoustic spring of the first silencer is softened by the chamber 15, and the air column resonance frequency is remarkably high. descend. Therefore, the air column resonance frequency can be largely avoided from the pressure pulsation fundamental wave frequency, and the silencing effect near the fundamental wave frequency can be improved.
【0018】さらに、従来、第2消音器13は1/2挿
入と1/4挿入の効果により脈動減衰効果を高め、また
第1消音器12と第2消音器13で2段消音器構造とな
り脈動減衰効果をいくらか高めていたが、本案のチャン
バー15を設けることで3段消音器構造となり従来より
さらに全体的に圧力脈動減衰効果を高め、消音効果を向
上させることができる。Further, conventionally, the second silencer 13 enhances the pulsation damping effect by the effect of 1/2 insertion and 1/4 insertion, and the first silencer 12 and the second silencer 13 have a two-stage silencer structure. Although the pulsation damping effect was enhanced to some extent, by providing the chamber 15 of the present invention, a three-stage silencer structure can be obtained, and the pressure pulsation damping effect can be further enhanced and the silencing effect can be improved as compared with the conventional case.
【0019】また、図2、図3に示すように接続配管1
1に設けられたチャンバー15を溶接等による嵌合接合
する方法でなく、直管をチャンバー15の外形を型どっ
た治具16、17で固定し、配管内に高圧をかけること
により、配管の内側から膨らませて塑性変形させ、チャ
ンバー15を形成することにより、接続配管11と一体
成形化が図れ、溶接等の必要もなく信頼性を向上させる
他、低コストで簡単に組み立てることができる。Further, as shown in FIGS. 2 and 3, the connecting pipe 1
1 is not a method of fitting and joining the chamber 15 provided by welding or the like, but a straight pipe is fixed by jigs 16 and 17 having the outer shape of the chamber 15 and high pressure is applied to the inside of the pipe, By forming the chamber 15 by inflating it from the inside and plastically deforming it, the connection pipe 11 can be integrally formed, and there is no need for welding or the like to improve reliability, and at the same time, it can be easily assembled at low cost.
【0020】尚、チャンバー15は接続配管11のどの
位置に設けられても同様の効果を得ることができる。The same effect can be obtained even if the chamber 15 is provided at any position of the connection pipe 11.
【0021】[0021]
【発明の効果】以上のように本発明は、電動圧縮要素
と、電動圧縮要素の吐出穴と連通する第1消音器と、第
1消音器と接続配管を介して連通する第2消音器を備
え、接続配管にチャンバーを設けることにより、第1消
音器または第2消音器の音響バネが柔らかくなり、気柱
共鳴周波数を著しく低下させ、圧力脈動基本波周波数に
対し大幅に回避させることができ、消音効果の低下を防
止できる。さらに、第1消音器、第2消音器と接続配管
に設けたチャンバーで3段消音器構造となり圧力脈動の
減衰効果を全体的に高めることができ、消音効果を向上
させることができる。As described above, according to the present invention, the electric compression element, the first silencer that communicates with the discharge hole of the electric compression element, and the second silencer that communicates with the first silencer via the connection pipe are provided. By providing a chamber in the connecting pipe, the acoustic spring of the first silencer or the second silencer becomes soft, the air column resonance frequency is significantly lowered, and the pressure pulsation fundamental wave frequency can be largely avoided. , It is possible to prevent deterioration of the muffling effect. Furthermore, the first muffler, the second muffler, and the chamber provided in the connection pipe form a three-stage muffler structure, whereby the damping effect of the pressure pulsation can be enhanced overall, and the muffling effect can be improved.
【0022】また、接続配管に設けたチャンバーを接続
配管の膨管により形成することにより、溶接等の必要が
なく信頼性を向上させる他、低コストで簡単に組み立て
ることができる。Further, since the chamber provided in the connection pipe is formed by the expansion pipe of the connection pipe, the reliability is improved without the need for welding or the like, and the assembly can be easily performed at low cost.
【0023】これにより、信頼性の高い低コストで簡単
に組み立てられる低騒音の圧縮機を提供することができ
る。Thus, it is possible to provide a highly reliable, low cost, low noise compressor that can be easily assembled.
【図1】本発明の一実施例における圧縮機の断面図FIG. 1 is a sectional view of a compressor according to an embodiment of the present invention.
【図2】他の実施例を示す圧縮機のチャンバーの形成前
を示す断面図FIG. 2 is a cross-sectional view showing another example of a compressor before forming a chamber.
【図3】図2のチャンバーの形成後の断面図3 is a cross-sectional view after formation of the chamber of FIG.
【図4】従来例を示す圧縮機の接続配管、第2消音器、
尾管を示す斜視図FIG. 4 is a conventional connecting pipe for a compressor, a second silencer,
Perspective view showing the tail tube
【図5】同従来例を示す圧縮機の軸受、吐出カバーを示
す分解斜視図FIG. 5 is an exploded perspective view showing a bearing and a discharge cover of a compressor showing the conventional example.
【図6】同従来例を示す圧縮機の断面図FIG. 6 is a sectional view of a compressor showing the conventional example.
1 圧縮機 9 軸受 10 吐出カバー 11 接続配管 12 第1消音器 13 第2消音器 14 尾管 15 チャンバー 1 Compressor 9 Bearing 10 Discharge Cover 11 Connection Piping 12 First Silencer 13 Second Silencer 14 Tailpipe 15 Chamber
Claims (2)
と連通する第1消音器と、第1消音器と接続配管を介し
て連通する第2消音器とを備え、前記接続配管にチャン
バーを設けたことを特徴とする圧縮機の消音器。1. A chamber comprising: an electric compression element; a first silencer that communicates with a discharge hole of the electric compression element; and a second silencer that communicates with the first silencer through a connection pipe. A silencer for a compressor, characterized by being provided with.
の膨管により形成することを特徴とする請求項1記載の
圧縮機の消音器2. The silencer for a compressor according to claim 1, wherein the chamber provided in the connection pipe is formed by an expansion pipe of the connection pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16570192A JPH0610875A (en) | 1992-06-24 | 1992-06-24 | Silencer for compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16570192A JPH0610875A (en) | 1992-06-24 | 1992-06-24 | Silencer for compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0610875A true JPH0610875A (en) | 1994-01-21 |
Family
ID=15817413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16570192A Pending JPH0610875A (en) | 1992-06-24 | 1992-06-24 | Silencer for compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0610875A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005057014A1 (en) * | 2003-12-15 | 2005-06-23 | Bitzer Kühlmaschinenbau Gmbh | Worm compressor provided with a sound absorber |
WO2008026568A1 (en) | 2006-08-30 | 2008-03-06 | Daikin Industries, Ltd. | Refrigeration system |
WO2008026569A1 (en) | 2006-08-30 | 2008-03-06 | Daikin Industries, Ltd. | Refrigeration system |
CN104863861A (en) * | 2015-05-05 | 2015-08-26 | 于浩 | Pulse sound attenuation device for screw rod type refrigerating machine |
-
1992
- 1992-06-24 JP JP16570192A patent/JPH0610875A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005057014A1 (en) * | 2003-12-15 | 2005-06-23 | Bitzer Kühlmaschinenbau Gmbh | Worm compressor provided with a sound absorber |
WO2008026568A1 (en) | 2006-08-30 | 2008-03-06 | Daikin Industries, Ltd. | Refrigeration system |
WO2008026569A1 (en) | 2006-08-30 | 2008-03-06 | Daikin Industries, Ltd. | Refrigeration system |
CN104863861A (en) * | 2015-05-05 | 2015-08-26 | 于浩 | Pulse sound attenuation device for screw rod type refrigerating machine |
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