JP2005180413A - Hermetic compressor - Google Patents

Hermetic compressor Download PDF

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Publication number
JP2005180413A
JP2005180413A JP2004069260A JP2004069260A JP2005180413A JP 2005180413 A JP2005180413 A JP 2005180413A JP 2004069260 A JP2004069260 A JP 2004069260A JP 2004069260 A JP2004069260 A JP 2004069260A JP 2005180413 A JP2005180413 A JP 2005180413A
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Prior art keywords
refrigerant
suction
hermetic compressor
pipe
chamber
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JP2004069260A
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Japanese (ja)
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Sung Ro Lee
成 魯 李
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Samsung Electronics Co Ltd
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Samsung Gwangju Electronics Co Ltd
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Publication of JP2005180413A publication Critical patent/JP2005180413A/en
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    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • 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
    • 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
    • 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
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hermetic compressor enabling the effective reduction in noise and vibration by improving the noise reduction structure of a suction muffler. <P>SOLUTION: The suction muffler 50 of this hermetic compressor comprises a case 51 in which a resonance chamber 52 is formed, a suction part 53 having a suction port 54 for sucking a refrigerant, and a refrigerant guide tube 56 communicating with a compression part. The suction port 54 is installed apart from the suction pipe, and the refrigerant guide tube 56 comprises an expanded tube part 57 with an enlarged diameter at an inlet side end for flowing the refrigerant therein. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は密閉型圧縮機に係り、より詳しくは吸入管を介して吸入された低圧の冷媒ガスをシリンダブロックの圧縮室の内部に流入させる吸入マフラーに関するものである。   The present invention relates to a hermetic compressor, and more particularly to a suction muffler that allows low-pressure refrigerant gas sucked through a suction pipe to flow into a compression chamber of a cylinder block.

一般に、密閉型圧縮機は、冷蔵庫などの冷凍装置において冷媒を圧縮するために広く使用されている。このような従来の密閉型圧縮機は、密閉空間を形成する密閉容器の内部に、冷媒を圧縮する圧縮部とこの圧縮部を駆動させる駆動部とを収容する。   Generally, a hermetic compressor is widely used to compress a refrigerant in a refrigeration apparatus such as a refrigerator. In such a conventional hermetic compressor, a compression unit that compresses the refrigerant and a drive unit that drives the compression unit are accommodated in a sealed container that forms a sealed space.

前記圧縮部は、冷媒を圧縮するための圧縮室が形成されたシリンダブロックと、シリンダブロックの一側に結合され、前記圧縮室に対する吸入と吐出を案内する吸入室と吐出室がそれぞれ設けられたシリンダヘッドと、前記圧縮室の内部に設けられるピストンとを含む。   The compression unit includes a cylinder block in which a compression chamber for compressing a refrigerant is formed, and is coupled to one side of the cylinder block, and is provided with a suction chamber and a discharge chamber for guiding suction and discharge to the compression chamber, respectively. A cylinder head and a piston provided inside the compression chamber are included.

前記駆動部は、電源の印加により磁場を形成する固定子と、前記固定子と相互作用して回転する回転軸を回転させる回転子とからなるもので、前記回転子の回転運動によりピストンが圧縮室の内部で進退しながら冷媒を圧縮する。   The drive unit includes a stator that forms a magnetic field by application of power, and a rotor that rotates a rotating shaft that interacts with the stator and rotates. The piston is compressed by the rotational motion of the rotor. The refrigerant is compressed while moving back and forth inside the chamber.

一方、密閉容器の一側には外部から冷媒を流入する吸入管が設けられ、この吸入管には吸入マフラーが連通する。   On the other hand, a suction pipe through which refrigerant flows from the outside is provided on one side of the sealed container, and a suction muffler communicates with the suction pipe.

このような吸入マフラーは、冷媒をシリンダヘッドの吸入室側に案内する機能とともに圧縮部での冷媒圧縮時に発生する騒音を減殺させる機能を同時に果たす。   Such a suction muffler simultaneously functions to guide the refrigerant to the suction chamber side of the cylinder head and to reduce noise generated when the refrigerant is compressed in the compression unit.

ところで、従来の密閉型圧縮機の吸入マフラーは、内部に形成された共鳴室により騒音を共鳴させて減殺させる方式であるから、全ての騒音が共鳴室で吸収されなく一部の騒音は吸入管を介して圧縮機の外部へ流出される。これにより、吸入管内で冷媒の流入方向と騒音の放射方向が相反するので、冷媒の流動周波数と騒音周波数が共振を引き起こすことにより、圧縮機の全体騒音及び振動が増加する問題点がある。   By the way, since the suction muffler of the conventional hermetic compressor is a method in which noise is resonated and attenuated by a resonance chamber formed inside, all the noise is not absorbed by the resonance chamber, and some of the noise is sucked into the suction pipe. To the outside of the compressor. As a result, the refrigerant inflow direction and the noise radiation direction are contradictory to each other in the suction pipe, so that the refrigerant flow frequency and the noise frequency cause resonance, thereby increasing the overall noise and vibration of the compressor.

したがって、本発明は、このような問題点を解決するためになされたもので、その目的は、吸入マフラーの騒音低減構造を改善して騒音及び振動を効果的に減少させることができる密閉型圧縮機を提供することにある。   Accordingly, the present invention has been made to solve such problems, and an object of the present invention is to improve the noise reduction structure of the suction muffler and effectively reduce noise and vibration. Is to provide a machine.

前記のような目的を達成するため、本発明は、密閉容器の内部に設けられ、冷媒を圧縮する圧縮部と、外部から前記密閉容器の内部に冷媒を案内する吸入管と、前記吸入管を介して冷媒を吸入してから前記圧縮部に吐き出す吸入マフラーとを含む密閉型圧縮機において、前記吸入マフラーは、内部に共鳴室が形成されるケースと、前記ケースの一側に設けられ、冷媒を吸入するための吸入口を有する吸入部と、前記共鳴室の内部から延長され、前記圧縮部に連通する冷媒案内管とを含み、前記吸入口は前記吸入管から離隔して設けられ、前記冷媒案内管は冷媒が流入する入口側端部に直径の拡張した拡管部を有するようになった密閉型圧縮機を提供する。前記拡管部は冷媒の流入方向に次第に幅が減少するように形成される。前記吸入部は冷媒の流入方向に幅が減少するラッパ管状に形成される。   In order to achieve the above object, the present invention provides a compression section that is provided inside a sealed container, compresses the refrigerant, a suction pipe that guides the refrigerant from the outside to the inside of the sealed container, and the suction pipe. In a hermetic compressor including a suction muffler that sucks a refrigerant through the suction unit and discharges the refrigerant to the compression unit, the suction muffler is provided in a case in which a resonance chamber is formed, and on one side of the case. Including a suction portion having a suction port for sucking in, and a refrigerant guide tube extending from the inside of the resonance chamber and communicating with the compression portion, the suction port being provided apart from the suction tube, The refrigerant guide tube provides a hermetic compressor in which an expanded pipe portion having an expanded diameter is provided at an inlet side end portion into which refrigerant flows. The tube expansion portion is formed so that the width gradually decreases in the refrigerant inflow direction. The suction part is formed in a trumpet shape whose width decreases in the refrigerant inflow direction.

以上のような本発明によると、圧縮部から発生する騒音を吸入マフラーの拡管部とラッパ管状の吸入部により効果的に低減することができるので、安定的な運転が行える効果がある。
また、吸入口と吸入管の離隔構造により、吸入口を通過した騒音が吸入管内で共振することを防止して圧縮機の信頼性を向上させる効果がある。 According to the present invention as described above, noise generated from the compression portion can be effectively reduced by the expanded portion of the suction muffler and the trumpet-shaped suction portion, so that there is an effect that stable operation can be performed.
In addition, the separation structure between the suction port and the suction pipe has an effect of improving the reliability of the compressor by preventing the noise passing through the suction port from resonating in the suction pipe.

以下、本発明の好ましい実施の形態を添付図面に基づいて詳細に説明する。   Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

図１は本発明による密閉型圧縮機の全体構造を示す断面図である。同図に示すように、本発明による密閉型圧縮機は、密閉容器１０の内部に、冷媒を圧縮するための圧縮部２０と、この圧縮部２０を駆動させるための動力を発生する駆動部３０とが設けられている。   FIG. 1 is a sectional view showing the entire structure of a hermetic compressor according to the present invention. As shown in the figure, a hermetic compressor according to the present invention includes a compression unit 20 for compressing a refrigerant in a hermetic container 10 and a drive unit 30 for generating power for driving the compression unit 20. And are provided.

前記圧縮部２０は内部に圧縮室２１ａが形成されたシリンダブロック２１を有する。圧縮室２１ａの内部には、往復運動して冷媒の吸入、圧縮及び吐出を行うピストン２２が設けられ、シリンダブロック２１の一側には、内部に吸入室２３ａと吐出室２３ｂが形成されたシリンダヘッド２３が対向して配置される。そして、シリンダブロック２１とシリンダヘッド２３との間には、圧縮室２１ａを経由する冷媒の吸入及び吐出を断続するための吸入バルブ２４ａと吐出バルブ２４ｂが設けられたバルブプレート２４が介在される。   The compression unit 20 includes a cylinder block 21 having a compression chamber 21a formed therein. A piston 22 that reciprocates to suck, compress, and discharge refrigerant is provided inside the compression chamber 21a. A cylinder block 21 is provided with a suction chamber 23a and a discharge chamber 23b on one side. The head 23 is disposed to face the head 23. Between the cylinder block 21 and the cylinder head 23, a valve plate 24 provided with a suction valve 24a and a discharge valve 24b for intermittently sucking and discharging the refrigerant through the compression chamber 21a is interposed.

前記駆動部３０は圧縮部２０で冷媒を圧縮するためピストン２２が往復運動するもので、密閉容器１０の内部に固定された固定子３１と、この固定子３１の内部に離隔して設けられ、固定子３１と電磁気的に相互作用する回転子３２とを含む。そして、回転子３２の中心には回転子３２とともに回転する回転軸３３が設けられ、回転軸３３の下部には、偏心状態で回転する偏心部３４と、この偏心部３４の偏心回転を直線運動に転換するため、一端は偏心部３４に回転可能に結合され、他端はピストン２２に回転及び直線運動可能に結合されるコネクティングロッド３５とが設けられている。   The drive unit 30 is a unit in which the piston 22 reciprocates in order to compress the refrigerant in the compression unit 20, and is provided separately from the stator 31 fixed inside the hermetic container 10 and the stator 31. It includes a stator 31 and a rotor 32 that interacts electromagnetically. A rotating shaft 33 that rotates together with the rotor 32 is provided at the center of the rotor 32, and an eccentric portion 34 that rotates in an eccentric state is provided below the rotating shaft 33, and the eccentric rotation of the eccentric portion 34 is linearly moved. In order to convert to the above, one end is rotatably connected to the eccentric portion 34, and the other end is provided with a connecting rod 35 connected to the piston 22 so as to be rotatable and linearly movable.

前記シリンダヘッド２３の一側には、冷媒が圧縮される過程で圧縮室２１ａから発生する騒音を低減させるための吸入マフラー５０が取り付けられる。以下、図２に基づいて本発明による密閉型圧縮機に設けられる吸入マフラー５０を詳細に説明する。   A suction muffler 50 is attached to one side of the cylinder head 23 to reduce noise generated from the compression chamber 21a in the process of compressing the refrigerant. Hereinafter, the suction muffler 50 provided in the hermetic compressor according to the present invention will be described in detail with reference to FIG.

図２に示すように、本発明による吸入マフラー５０は、共鳴室５２を形成するケース５１と、ケース５１の下部一側に冷媒を吸入する吸入口５４を有する吸入部５３と、ケース５１の底面にシリンダヘッド２３側に開口した吐出口５５を含んでなる。   As shown in FIG. 2, the suction muffler 50 according to the present invention includes a case 51 that forms a resonance chamber 52, a suction part 53 that has a suction port 54 for sucking refrigerant on the lower side of the case 51, and a bottom surface of the case 51. And a discharge port 55 opened on the cylinder head 23 side.

前記吸入部５３は吸入口５４から冷媒の流入方向に次第に幅が減少するラッパ管状に形成され、吸入口５４は、外部から冷媒が密閉容器１０の内部に流入されるように、密閉容器１０を貫通する吸入管４０の先端から所定距離だけ離隔するように設けられる。   The suction part 53 is formed in a trumpet shape whose width gradually decreases in the refrigerant inflow direction from the suction port 54, and the suction port 54 allows the airtight container 10 to flow into the airtight container 10 from outside. It is provided so as to be separated from the tip of the penetrating suction pipe 40 by a predetermined distance.

前記吸入管４０を通過した冷媒流中の気相の冷媒（細い実線で表示）は吸入部５３を通過して共鳴室５２の内部に流入するが、液相の冷媒（太い実線で表示）はその自重によりかつ吸入部５３の内壁傾斜面にぶつかることにより、密閉容器１０の底面に落ちるので、液相冷媒が吸入口５３を介してシリンダに流入することが防止される。また、このような吸入部５３の構造により、圧縮機の内部で発生する騒音を効果的に減殺させることができるが、これについては後に詳細に説明する。   The gas-phase refrigerant (indicated by a thin solid line) in the refrigerant flow that has passed through the suction pipe 40 passes through the suction portion 53 and flows into the resonance chamber 52, but the liquid-phase refrigerant (indicated by a thick solid line) Since it falls on the bottom surface of the sealed container 10 by hitting the inclined surface of the inner wall of the suction portion 53 by its own weight, the liquid-phase refrigerant is prevented from flowing into the cylinder through the suction port 53. In addition, such a structure of the suction portion 53 can effectively reduce noise generated inside the compressor, which will be described in detail later.

また、本発明による吸入マフラー５０は共鳴室５２の内部に吸入された冷媒をシリンダヘッド２３側に案内するための冷媒案内管５６をさらに含む。前記冷媒案内管５６は共鳴室５２の内部から吐出口５５側に延長され、その延長端部はシリンダヘッド２３に結合される。   The suction muffler 50 according to the present invention further includes a refrigerant guide tube 56 for guiding the refrigerant sucked into the resonance chamber 52 to the cylinder head 23 side. The refrigerant guide tube 56 extends from the inside of the resonance chamber 52 toward the discharge port 55, and the extended end portion is coupled to the cylinder head 23.

このような冷媒案内管５６は、図３に示すように、冷媒が流入する入口側端部に直径が拡張した拡管部５７が設けられ、この拡管部５７は冷媒の流入方向に次第に直径が減少するように形成される。   As shown in FIG. 3, the refrigerant guide tube 56 is provided with an expanded pipe portion 57 having an enlarged diameter at the inlet side end portion into which the refrigerant flows, and the expanded pipe portion 57 gradually decreases in diameter in the refrigerant inflow direction. To be formed.

つぎに、このように構成される本発明による密閉型圧縮機の動作及び作用を説明する。   Next, the operation and action of the hermetic compressor according to the present invention configured as described above will be described.

駆動部３０に電源が印加されると、回転子３２とともに回転軸３３が回転し、回転軸３３の回転により偏心部３４が偏心状態で回転する。偏心部３４によりピストン２２が圧縮室２１ａの内部で往復運動すると、ピストン２２の運動により吸入マフラー５０及びシリンダヘッド２３の吸入室２３ａを順次通過した冷媒が圧縮室２１ａに流入して圧縮された後、シリンダヘッド２３の吐出室２３ｂに吐き出される。   When power is applied to the drive unit 30, the rotating shaft 33 rotates together with the rotor 32, and the eccentric portion 34 rotates in an eccentric state by the rotation of the rotating shaft 33. When the piston 22 reciprocates inside the compression chamber 21a by the eccentric portion 34, the refrigerant sequentially passing through the suction muffler 50 and the suction chamber 23a of the cylinder head 23 by the movement of the piston 22 flows into the compression chamber 21a and is compressed. Then, it is discharged into the discharge chamber 23b of the cylinder head 23.

この際、圧縮室２１ａでの冷媒圧縮時に発生する騒音は、図２に点線で示すように、シリンダヘッド２３の吸入室２３ａから吸入マフラー５０側に流動するが、この騒音は吸入マフラー５０の冷媒案内管５６を介して共鳴室５２の内部に流入する。   At this time, noise generated when the refrigerant is compressed in the compression chamber 21a flows from the suction chamber 23a of the cylinder head 23 toward the suction muffler 50 as shown by a dotted line in FIG. It flows into the resonance chamber 52 through the guide tube 56.

そして、前記騒音は冷媒案内管５６に設けられた拡管部５７を介して共鳴室５２に拡散しながら一次に低減され、残りの騒音はラッパ管状の吸入部５３を介して圧縮機の内部空間に拡散しながら二次に低減される。すなわち、本発明による吸入マフラー５０は騒音が二重に拡散する構造により騒音を効果的に減殺させる。   The noise is first-order reduced while diffusing into the resonance chamber 52 via the expansion portion 57 provided in the refrigerant guide tube 56, and the remaining noise is introduced into the internal space of the compressor via the trumpet-shaped suction portion 53. Second-order reduction while diffusing. That is, the suction muffler 50 according to the present invention effectively attenuates the noise by the structure in which the noise is diffused twice.

また、吸入口５４が吸入管４０から離隔しているため、吸入口５４を通過した騒音が吸入管４０の内部に流入せずに圧縮機の内部に放射されるので、吸入管４０での冷媒の流動周波数と騒音周波数間の共振により発生する圧縮機の騒音及び振動を防止する。   Further, since the suction port 54 is separated from the suction pipe 40, the noise that has passed through the suction port 54 is radiated into the compressor without flowing into the suction pipe 40. This prevents the compressor noise and vibration caused by resonance between the flow frequency and noise frequency of the compressor.

本発明による密閉型圧縮機の全体構造を示す断面図である。It is sectional drawing which shows the whole structure of the hermetic compressor by this invention. 本発明による密閉型圧縮機の吸入マフラーを示す断面図である。It is sectional drawing which shows the suction muffler of the hermetic type compressor by this invention. 本発明による吸入マフラーに設けられる冷媒案内管を示す斜視図である。It is a perspective view which shows the refrigerant | coolant guide tube provided in the suction muffler by this invention.

符号の説明Explanation of symbols

１０ 密閉容器
２０ 圧縮部
２１ａ 圧縮室
２２ ピストン
２３ シリンダヘッド
２３ａ 吸入室
２３ｂ 吐出室
２４ バルブプレート
２４ａ 吸入バルブ
２４ｂ 吐出バルブ
３０ 駆動部
３１ 固定子
３２ 回転子
３３ 回転軸
３４ 偏心部
３５ コネクティングロッド
４０ 吸入管
５０ 吸入マフラー
５１ ケース
５２ 共鳴室
５３ 吸入部
５４ 吸入口
５５ 吐出口
５６ 冷媒案内管
５７ 拡管部 DESCRIPTION OF SYMBOLS 10 Sealing container 20 Compression part 21a Compression chamber 22 Piston 23 Cylinder head 23a Suction chamber 23b Discharge chamber 24 Valve plate 24a Suction valve 24b Discharge valve 30 Drive part 31 Stator 32 Rotor 33 Rotating shaft 34 Eccentric part 35 Connecting rod 40 Suction pipe 50 Suction Muffler 51 Case 52 Resonance Chamber 53 Suction Portion 54 Suction Port 55 Discharge Port 56 Refrigerant Guide Tube 57 Expanded Portion

Claims (3)

密閉容器の内部に設けられ、冷媒を圧縮する圧縮部と、外部から前記密閉容器の内部に冷媒を案内する吸入管と、前記吸入管を介して冷媒を吸入してから前記圧縮部に吐き出す吸入マフラーとを含む密閉型圧縮機において、
前記吸入マフラーは、内部に共鳴室が形成されるケースと、前記ケースの一側に設けられ、冷媒を吸入するための吸入口を有する吸入部と、前記共鳴室の内部から延長され、前記圧縮部に連通する冷媒案内管とを含み、
前記吸入口は前記吸入管から離隔して設けられ、前記冷媒案内管は冷媒が流入する入口側端部に直径の拡張した拡管部を有することを特徴とする密閉型圧縮機。 A compressor provided inside the sealed container for compressing the refrigerant; a suction pipe for guiding the refrigerant from the outside to the inside of the sealed container; and a suction for sucking the refrigerant through the suction pipe and then discharging the refrigerant to the compressor In a hermetic compressor including a muffler,
The suction muffler includes a case in which a resonance chamber is formed, a suction portion that is provided on one side of the case and has a suction port for sucking a refrigerant, is extended from the inside of the resonance chamber, and is compressed. A refrigerant guide tube communicating with the section,
The hermetic compressor is characterized in that the suction port is provided apart from the suction pipe, and the refrigerant guide pipe has an expanded pipe portion having an expanded diameter at an inlet side end portion into which the refrigerant flows. 前記拡管部は冷媒の流入方向に次第に幅が減少するように形成されることを特徴とする請求項１に記載の密閉型圧縮機。   2. The hermetic compressor according to claim 1, wherein the expansion portion is formed so that the width gradually decreases in a refrigerant inflow direction. 前記吸入部は冷媒の流入方向に幅が減少するラッパ管状に形成されることを特徴とする請求項１に記載の密閉型圧縮機。   2. The hermetic compressor according to claim 1, wherein the suction portion is formed in a trumpet shape whose width decreases in a refrigerant inflow direction.
JP2004069260A 2003-12-15 2004-03-11 Hermetic compressor Pending JP2005180413A (en)

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