JPH028156B2 - - Google Patents
Info
- Publication number
- JPH028156B2 JPH028156B2 JP57216582A JP21658282A JPH028156B2 JP H028156 B2 JPH028156 B2 JP H028156B2 JP 57216582 A JP57216582 A JP 57216582A JP 21658282 A JP21658282 A JP 21658282A JP H028156 B2 JPH028156 B2 JP H028156B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge chamber
- annular discharge
- bearing
- noise
- valve cover
- 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.)
- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000010349 pulsation Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000001743 silencing effect Effects 0.000 description 3
- 230000002079 cooperative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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)
Description
【発明の詳細な説明】
〔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まれ
る密閉形圧縮機に係り、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, for example, a room cooler, and more 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み込まれる圧縮装置
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ポートに吐出弁を設け
るとともに主軸受にバルブカバーを装着し、吐出
ポートから出る吐出ガスを、バルブカバーにより
画成される室に導き、吐出ガスの脈動の低減化を
図り、消音効果を上げるようにしている。
Generally, the compression device incorporated in a hermetic compressor is composed of a main bearing, a sub-bearing, and a cylinder.A discharge port is provided on the main bearing, and a discharge valve is provided on the discharge port, and a valve cover is attached to the main bearing. The discharged gas discharged from the valve cover is guided into a chamber defined by the valve cover, thereby reducing pulsation of the discharged gas and increasing the silencing 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
音低減には役立つているが、騒音周波数全域に亘
つて消音効果が上るわけではなく、シリンダで圧
縮されたガスが環状吐出室に突入することによつ
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 increased by attaching the valve cover to the bearing, which is useful for reducing noise, but the silencing effect does not improve over the entire noise frequency range, and the cylinder When the discharged gas rushes into the annular discharge chamber, specific pressure pulsations occur, and noise at a specific frequency is generated.
そこで環状吐出室に、一定長さのパイプを連設
して、特定周波数の騒音を低減させる提案もなさ
れているが、この場合には、吐出ガスの環状吐出
室内での半径方向に生じる圧力脈動を低減させる
効果があつても、周方向に生じる圧力脈動を低減
させる効果がほとんどなく、期待通りの騒音の低
減を図り得ない。 Therefore, a proposal has been made to connect a pipe of a certain length to the annular discharge chamber to reduce noise at a specific frequency. Even if there is an effect of reducing the pressure pulsation occurring in the circumferential direction, there is almost no effect of 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されたもので、
環状吐出室内にトラツプを設けて、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
るようにした密閉形圧縮機を提供することを目的
とする。
The present invention has been made in view of the above points, and
It is an object of the present invention to provide a hermetic compressor in which a trap is provided in an annular discharge chamber to reduce pressure pulsations occurring in a valve cover and reduce noise.
本発明の目的は、バルブカバーにより画成され
る室に、一端を開口しかつ長手方向長さを環状吐
出室の平均円周長さの約1/4に設定した柱状空間
を環状吐出室の底面より上方に設け、環状吐出室
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つて達
成される。
An object of the present invention is to provide a columnar space in a chamber defined by a valve cover, which is open at one end and whose length in the longitudinal direction is approximately 1/4 of the average circumferential length of the annular discharge chamber. This is achieved by a hermetic compressor installed above the bottom surface to reduce pressure pulsations occurring in the circumferential direction of the annular discharge chamber and reduce specific noise.
以下本発明の一実施例を図面につき説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第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つて、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に支持されている。 In FIG. 1, reference numeral 1 denotes a sealed casing that can be divided into upper and lower parts, and this sealed casing 1
An electric motor 2 is supported at the upper part of the interior, and an eccentric large diameter portion 4 is integrally formed at the lower end side of a shaft 3 extending downward from the electric motor 2, and the shaft 3 is sandwiched between the large diameter portion 4. It is supported by a main bearing 6 and a sub-bearing 7 of the compression device 5.
上記圧縮装置５は、主軸受６、副軸受７および
これらの間に位置するシリンダ８を有して構成さ
れており、大径部４に外嵌したローラ９に弾接す
るブレード１０の協働作用で、シリンダ８内に圧
縮室を形成している。 The compression device 5 includes a main bearing 6, a sub-bearing 7, and a cylinder 8 located between these, and the cooperative action of a blade 10 that comes into elastic contact with a roller 9 fitted onto the large diameter portion 4. A compression chamber is formed within the cylinder 8.
一方上記主軸受６の適当位置には吐出ポート１
１が設けられており、かつその吐出ポート１１に
は吐出弁１２が配設されている。そして上記主軸
受６の吐出弁１２を含む区域を覆うように略円筒
形のバルブカバー１３が装着され、主軸受６とバ
ルブカバー１３の間に環状吐出室１４を画成して
いる。 On the other hand, a discharge port 1 is located at an appropriate position on the main bearing 6.
1 is provided, and a discharge valve 12 is disposed at its discharge port 11. A substantially cylindrical valve cover 13 is attached to cover an area of the main bearing 6 including the discharge valve 12, and an annular discharge chamber 14 is defined between the main bearing 6 and the valve cover 13.
他方上記バルブカバー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
たパイプ状部分１５が軸方向に延びるように一体
に連接されている。上記パイプ状部１５の長さＬ
は、環状吐出室１４の平均円周長さの約1/4の長
さに設定されている。 On the other hand, a pipe-shaped portion 15 with one end open is integrally connected to the valve cover 13 at a position radially opposite to the mounting position of the discharge valve 12 so as to extend in the axial direction. Length L of the pipe-shaped portion 15
is set to approximately 1/4 of the average circumferential length of the annular discharge chamber 14.
すなわち吐出ポート１１から環状吐出室１４に
導かれたガスは、第３図に矢示する方向（円周方
向）に伝搬し、ある特定の周波数をもつ圧力脈動
波だけが強調・増幅され、伝搬路方向に停滞す
る。この停滞する波の周波数をｆ、音速をｃ
（ｍ／ｓ）平均伝搬路長（ｍ）をｌｍとするとｆ
＝ｃ／ｌｍ（Hz）となる。 That is, the gas guided from the discharge port 11 to the annular discharge chamber 14 propagates in the direction shown by the arrow in FIG. Stalls in the direction of the road. The frequency of this stagnant wave is f, and the speed of sound is c
(m/s) If the average propagation path length (m) is lm, then f
= c/lm (Hz).
そこでパイプ状部１５の長さＬを平均伝搬路長
ｌｍの４分の１に設定すると、閉止端で反射して
開口端に戻つ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, if the length L of the pipe-shaped part 15 is set to one quarter of the average propagation path length lm, the phase of the pressure pulsating wave reflected at the closed end and returned to the open end will be reversed, and the pressure wave inside the valve cover will be reversed. Pressure pulsation waves may be reduced.
次に作用を説明する。 Next, the effect will be explained.
吐出ポート１１から環状吐出室１４に導かれた
ガス流は、室１４内において周方向に流れ、特定
の周波数をもつ圧力脈動波が強調増幅され、騒音
発生源となるが、環状吐出室１４に連通するパイ
プ状部１５の長さＬが平均伝搬路長の４分の１に
設定されているので、このパイプ状部１５に入り
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つてくる間に圧力脈動波の位
相が逆になり、環状吐出室１４内を周方向に流れ
る圧力脈動波と相殺して圧力脈動波は低減し、特
定騒音が抑えられることになる。 The gas flow guided from the discharge port 11 to the annular discharge chamber 14 flows in the circumferential direction within the chamber 14, and pressure pulsating waves with a specific frequency are emphasized and amplified, which becomes a source of noise. Since the length L of the communicating pipe-like portion 15 is set to one quarter of the average propagation path length, the pressure pulsating waves that have entered this pipe-like portion 15 are reflected at the closed end of the pipe-like portion 15. While returning to the open end, the phase of the pressure pulsating wave is reversed, canceling out the pressure pulsating wave flowing in the circumferential direction inside the annular discharge chamber 14, reducing the pressure pulsating wave, and suppressing specific noise. Become.
以上述べたように本発明によれば、環状吐出室
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、しかも環状吐
出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 of a specific frequency that occurs when the gas flow guided into the annular discharge chamber flows in the circumferential direction, and also to reduce the pressure pulsation within the annular discharge chamber. As a result, the operation of the discharge valve becomes easier, resulting in effects such as a reduction in required power and an improvement in COP.
第１図は本発明による密閉形圧縮機の断面図、
第２図は要部拡大図、第３図は、環状吐出室内を
流れるガス流を示す図である。
６……主軸受、８……シリンダ、１１……吐出
ポート、１２……吐出弁、１３……バルブカバ
ー、１４……環状吐出室、１５……パイプ状部。
FIG. 1 is a sectional view of a hermetic compressor according to the present invention;
FIG. 2 is an enlarged view of the main part, and FIG. 3 is a diagram showing the gas flow flowing inside the annular discharge chamber. 6...Main bearing, 8...Cylinder, 11...Discharge port, 12...Discharge valve, 13...Valve cover, 14...Annular discharge chamber, 15...Pipe-shaped portion.
Claims (1)
結した圧縮装置を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着されるバルブカ
ブーの間に形成される環状吐出室に一端を開口
し、かつ、長手方向長さを環状吐出室の平均円周
長さの約1/4に設定した柱状空間を前記環状吐出
室の底面よりも上方に設けたことを特徴とする密
閉形圧縮機。1 In a hermetic compressor equipped with an electric motor and a compression device directly connected to the electric motor in a hermetic casing,
One end is opened to the annular discharge chamber formed between the bearing of the compression device and the valve caboo attached to this bearing, and the length in the longitudinal direction is set to approximately 1/4 of the average circumferential length of the annular discharge chamber. A hermetic compressor, characterized in that a columnar space is provided above the bottom surface of the annular discharge chamber.
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 JPS59105980A (en) | 1984-06-19 |
| JPH028156B2 true 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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU587858B2 (en) * | 1985-09-30 | 1989-08-31 | Kabushiki Kaisha Toshiba | Rotary compressor |
| DE9314146U1 (en) * | 1993-09-18 | 1995-01-26 | Sihi GmbH & Co KG, 25524 Itzehoe | Liquid ring gas pump |
| KR20210090449A (en) * | 2020-01-10 | 2021-07-20 | 엘지전자 주식회사 | A compressor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57220U (en) * | 1980-05-29 | 1982-01-05 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53127311U (en) * | 1977-03-18 | 1978-10-09 |
-
1982
- 1982-12-10 JP JP21658282A patent/JPS59105980A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57220U (en) * | 1980-05-29 | 1982-01-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59105980A (en) | 1984-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4781545A (en) | Rotary compressor with sound suppression tubular cavity section | |
| KR970027828A (en) | Discharge Noise Reduction Device for Hermetic Electric Compressor | |
| JPH028156B2 (en) | ||
| JP2000018184A (en) | Rotary compressor | |
| JPH05133377A (en) | Closed type compressor | |
| JPH0688514A (en) | Muffler of internal combustion engine | |
| JPS6323593Y2 (en) | ||
| JPS638869Y2 (en) | ||
| KR970004718B1 (en) | Noise reducer in rotary compressor | |
| JPS6115930Y2 (en) | ||
| JPH0125918B2 (en) | ||
| JPH02196189A (en) | Compressor | |
| JPH0686878B2 (en) | Rotary compressor | |
| JPH029117Y2 (en) | ||
| JPH02176197A (en) | Muffler device of compressor | |
| JPS59103985A (en) | Silencer for enclosed type motor compressor | |
| JP2528968Y2 (en) | Engine intake noise reduction device | |
| JPS58211590A (en) | Silencing apparatus for rotary type enclosed compressor | |
| JPS6344258Y2 (en) | ||
| JP2786317B2 (en) | Silencing structure of screw compressor | |
| KR100201647B1 (en) | Rotary compressor | |
| JPH1018926A (en) | Silencing device for fluid gas passage | |
| JPS587048Y2 (en) | hermetic compressor | |
| JPH03242495A (en) | Muffling device for compressor | |
| KR100999057B1 (en) | Muffler for vehicle |