JP5463275B2 - Hermetic compressor and refrigerator equipped with the same - Google Patents

Hermetic compressor and refrigerator equipped with the same Download PDF

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Publication number
JP5463275B2
JP5463275B2 JP2010278741A JP2010278741A JP5463275B2 JP 5463275 B2 JP5463275 B2 JP 5463275B2 JP 2010278741 A JP2010278741 A JP 2010278741A JP 2010278741 A JP2010278741 A JP 2010278741A JP 5463275 B2 JP5463275 B2 JP 5463275B2
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suction
lubricating oil
suction port
muffler
hermetic compressor
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JP2012127244A (en
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将宏 城谷
健裕 秋澤
奨一 加納
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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Priority to JP2010278741A priority Critical patent/JP5463275B2/en
Priority to KR1020110082065A priority patent/KR101309661B1/en
Priority to CN201110261618.XA priority patent/CN102536737B/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
    • F04B39/0027—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
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B39/0033—Pulsation and noise damping means with encapsulations
    • F04B39/0038—Pulsation and noise damping means with encapsulations of inlet or outlet channels
    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • 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
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Description

本発明は、密閉型圧縮機及びこれを備えた冷蔵庫に関するものである。   The present invention relates to a hermetic compressor and a refrigerator including the same.

近年、冷蔵庫の大容量化及び高効率化が進む中で、搭載される密閉型圧縮機の高効率化を図る必要がある。吸込みマフラにおいては、吸込みマフラ内部の出口管に連通した閉塞されている側部閉空間を設けることで、側部閉空間に潤滑油を分離し、圧縮室への潤滑油流入量を低減する構造が開示されている（例えば、特許文献１参照）。   In recent years, as the capacity and efficiency of refrigerators are increasing, it is necessary to improve the efficiency of hermetic compressors installed. In the suction muffler, a closed side closed space communicating with the outlet pipe inside the suction muffler is provided to separate the lubricating oil in the side closed space and reduce the amount of lubricating oil flowing into the compression chamber Is disclosed (for example, see Patent Document 1).

特開２０１０−１８５３９２号公報JP 2010-185392 A

しかしながら、特許文献１に記載の構造では、吸込みマフラ吸込み口から多量の潤滑油が流入すると、吸込みマフラ内部の側部閉空間では潤滑油を分離しきれなくなり、圧縮室に多量の潤滑油が流入するおそれがある。潤滑油が圧縮室に大量に流入すると、圧縮時の負担が大きくなり、入力が増大し、十分に冷媒を圧縮できないことにより、冷凍能力の低下を引き起こす可能性がある。   However, in the structure described in Patent Document 1, if a large amount of lubricating oil flows from the suction muffler suction port, the lubricating oil cannot be separated in the side closed space inside the suction muffler, and a large amount of lubricating oil flows into the compression chamber. There is a risk. When a large amount of lubricating oil flows into the compression chamber, the burden at the time of compression increases, the input increases, and the refrigerant cannot be sufficiently compressed, which may cause a decrease in the refrigerating capacity.

そこで本発明は、上記従来の課題に鑑みて、吸込みマフラ内部への潤滑油流入量を低減し、性能の安定した密閉型圧縮機及びこれを備えた冷蔵庫を提供することを目的とする。   Accordingly, in view of the above-described conventional problems, an object of the present invention is to provide a hermetic compressor having a stable performance and a refrigerator equipped with the same, by reducing the amount of lubricating oil flowing into the suction muffler.

上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。一例として、密閉容器内に、潤滑油と、冷媒ガスを吸入して圧縮する圧縮要素と、該圧縮要素を駆動する電動要素とを収容した密閉型圧縮機において、前記圧縮要素の冷媒吸入ポートに吸込みマフラを有し、該吸込みマフラは、前記密閉容器内に開口されて前記密閉容器内の前記冷媒ガスを吸入する吸込み口と、前記吸込み口から前記圧縮要素の吸込み部へ連通する通路部とを有し、前記吸込み口と前記通路部の係合部を一体形状として前記潤滑油の流入を抑制する構成として、前記吸込み口と前記通路部を一体形状とした前記吸込みマフラの底部に潤滑油排出孔を有し、前記吸込みマフラの前記吸込み口上部に油受け部を設け、前記吸込み口上部の前記油受け部の底部は傾斜を有し、前記油受け部の前記底部に溜まった前記潤滑油は前記傾斜に沿って流れ落ちた後に前記吸込み口の横面に流すことで、前記吸込みマフラの前記吸込み口への前記潤滑油の流入を低減することを特徴とする。 In order to solve the above problems, for example, the configuration described in the claims is adopted. As an example, in a hermetic compressor in which a compressed oil that sucks and compresses refrigerant oil, refrigerant gas, and an electric element that drives the compression element are housed in a sealed container, the refrigerant suction port of the compression element A suction muffler, the suction muffler being opened in the sealed container and sucking the refrigerant gas in the sealed container; and a passage portion communicating from the suction port to the suction part of the compression element; And the engagement portion between the suction port and the passage portion is integrated to suppress the inflow of the lubricating oil, and the bottom portion of the suction muffler is integrally formed with the suction port and the passage portion. have a discharge hole, the oil receiving portion is provided in the inlet upper portion of the suction muffler, the bottom of the oil receiving portion of the inlet upper portion has an inclined, the lubricant accumulated in the bottom portion of the oil receiving portion The oil is tilted By passing the lateral faces of the suction port after flowing down along, characterized in that to reduce the flow of the lubricating oil to the suction port of the suction muffler.

本発明によれば、吸込みマフラ内部への潤滑油流入量を低減し、性能の安定した密閉型圧縮機を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the amount of lubricating oil inflow into the suction muffler can be reduced, and the hermetic compressor with stable performance can be provided.

本発明の実施形態に係る密閉型圧縮機の縦断面図。1 is a longitudinal sectional view of a hermetic compressor according to an embodiment of the present invention. 本発明の実施形態に係る密閉型圧縮機の吸込みマフラ配置図。The suction muffler arrangement | positioning figure of the hermetic type compressor which concerns on embodiment of this invention. 本発明の実施形態に係る図２の吸込みマフラの部分断面斜視図。FIG. 3 is a partial cross-sectional perspective view of the suction muffler of FIG. 2 according to an embodiment of the present invention. 本発明の実施形態に係る図２の吸込みマフラの断面図。Sectional drawing of the suction muffler of FIG. 2 which concerns on embodiment of this invention. 本発明の実施形態に係る冷蔵庫の側断面図。The sectional side view of the refrigerator which concerns on embodiment of this invention.

以下、本発明の実施形態を図に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の実施の形態による密閉型圧縮機５０の縦断面図である。図２は、密閉型圧縮機５０の吸込みマフラ１３の配置図である。図３は、吸込みマフラ１３の部分断面斜視図である。図４は、吸込みマフラ１３の断面図である。   FIG. 1 is a longitudinal sectional view of a hermetic compressor 50 according to an embodiment of the present invention. FIG. 2 is a layout diagram of the suction muffler 13 of the hermetic compressor 50. FIG. 3 is a partial cross-sectional perspective view of the suction muffler 13. FIG. 4 is a cross-sectional view of the suction muffler 13.

本実施形態の密閉型圧縮機５０は、圧縮要素３０と電動要素４０とを密閉容器１７内に上下に配置すると共に、クランクシャフト３で連結したレシプロ型圧縮機である。圧縮要素３０及び電動要素４０は密閉容器１７に弾性的に支持されている。   The hermetic compressor 50 according to the present embodiment is a reciprocating compressor in which the compression element 30 and the electric element 40 are vertically arranged in the hermetic container 17 and are connected by the crankshaft 3. The compression element 30 and the electric element 40 are elastically supported by the sealed container 17.

圧縮要素３０は、シリンダ室を形成するシリンダブロック１と、シリンダ室内を往復動するピストン４と、このピストン４を駆動するコネクティングロッド２と、シリンダブロック端面に組立てられる多数の部品を備えて構成されている。シリンダブロック１は軸受部１ａ及びフレーム１ｂを一体に成形している。ピストン４は、コネクティングロッド２を介してクランクピン３ａに連結され、クランクピン３ａの偏心回転によりシリンダブロック１内を往復運動される。   The compression element 30 includes a cylinder block 1 that forms a cylinder chamber, a piston 4 that reciprocates in the cylinder chamber, a connecting rod 2 that drives the piston 4, and a number of components that are assembled on the end face of the cylinder block. ing. The cylinder block 1 is formed by integrally forming a bearing portion 1a and a frame 1b. The piston 4 is connected to the crank pin 3a via the connecting rod 2, and is reciprocated in the cylinder block 1 by the eccentric rotation of the crank pin 3a.

電動要素４０は、フレーム１ｂの下方に配置され、固定子５及び回転子６を備えて構成されている。固定子５はフレーム１ｂに固定され、回転子６はクランクシャフト３に固定されている。クランクシャフト３の上端部には、回転中心から偏心したクランクピン３ａが設けられている。   The electric element 40 is disposed below the frame 1 b and includes the stator 5 and the rotor 6. The stator 5 is fixed to the frame 1b, and the rotor 6 is fixed to the crankshaft 3. A crankpin 3 a that is eccentric from the center of rotation is provided at the upper end of the crankshaft 3.

クランクシャフト３は、軸受部１ａを貫通してフレーム１ｂの下方から上方へ延伸しており、クランクピン３ａがフレーム１ｂの上方側に位置するように設けられている。クランクシャフト３の下部は回転子６と直結しており、電動要素４０の動力によってクランクシャフト３は回転される。クランクピン３ａとピストン４との間はコネクティングロッド２で連結されており、クランクピン３ａ及びコネクティングロッド２を介してピストン４が往復動する構成となっている。   The crankshaft 3 penetrates the bearing portion 1a and extends upward from below the frame 1b, and the crankpin 3a is provided so as to be positioned above the frame 1b. The lower part of the crankshaft 3 is directly connected to the rotor 6, and the crankshaft 3 is rotated by the power of the electric element 40. The crank pin 3 a and the piston 4 are connected by a connecting rod 2, and the piston 4 reciprocates via the crank pin 3 a and the connecting rod 2.

シリンダブロック１の端面には吸込孔と吐出孔とを備えたバルブプレート８と、吸入孔を開閉する吸入バルブ１０と、バルブプレート８を蓋するシリンダヘッド９とが、共にヘッドボルト１２によって、シリンダブロック１の端面を封止するように押圧固定されるとともに、シリンダヘッド９により、吸込みマフラ１３が保持されて固定されている。すなわち、圧縮要素３０の冷媒吸入ポートに吸込みマフラ１３が取り付けられている。吸込みマフラ１３はポリブチレンテレフタレート（ＰＢＴ）等の樹脂で形成され、吸込み口１３ａと通路部１３ｂとを一体成形した下マフラ１３ｃと中仕切り板１３ｄ，上マフラ１３ｅとを超音波溶着等を用いて溶着して形成している。   A valve plate 8 having a suction hole and a discharge hole on the end face of the cylinder block 1, a suction valve 10 that opens and closes the suction hole, and a cylinder head 9 that covers the valve plate 8 are both connected to the cylinder by a head bolt 12. While being pressed and fixed so as to seal the end face of the block 1, the suction muffler 13 is held and fixed by the cylinder head 9. That is, the suction muffler 13 is attached to the refrigerant suction port of the compression element 30. The suction muffler 13 is formed of a resin such as polybutylene terephthalate (PBT), and the lower muffler 13c integrally formed with the suction port 13a and the passage portion 13b, the intermediate partition plate 13d, and the upper muffler 13e are used by ultrasonic welding or the like. It is formed by welding.

また、吸込み口１３ａ上部には油受け部１４を取り付け、その底部１４ａには溜まった潤滑油１５が流れ落ちやすいように、例えば７°程度の傾斜が形成されており、油受け部１４と下マフラの間の幅は２mmである。また、油受け部１４は２箇所の爪で下マフラ１３ｃに固定されている。   An oil receiver 14 is attached to the upper part of the suction port 13a, and an inclination of, for example, about 7 ° is formed on the bottom part 14a so that the accumulated lubricating oil 15 can easily flow down. The width between is 2 mm. The oil receiver 14 is fixed to the lower muffler 13c with two claws.

また、吸込み口１３ａと通路部１３ｂとを一体化した下マフラ１３ｃの底部には、潤滑油排出孔１３ｆが設けられている。   A lubricating oil discharge hole 13f is provided at the bottom of the lower muffler 13c in which the suction port 13a and the passage portion 13b are integrated.

シリンダブロック１内に供給されたガス冷媒は、ピストン４の往復運動によって圧縮される。圧縮されたガス冷媒は、バルブプレート８に設けられた吐出孔を経由し、吐出管へと送られる。吐出管へ送られた冷媒は、凝縮器，減圧機構，蒸発器を経て、再び圧縮機内へと戻される。圧縮機，凝縮器，減圧機構及び蒸発器により冷凍サイクルを形成している。この冷凍サイクルには、イソブタン（Ｒ６００ａ）などの炭化水素系の冷媒（ＨＣ冷媒）が使用されている。   The gas refrigerant supplied into the cylinder block 1 is compressed by the reciprocating motion of the piston 4. The compressed gas refrigerant is sent to the discharge pipe via the discharge hole provided in the valve plate 8. The refrigerant sent to the discharge pipe returns to the compressor again through the condenser, the pressure reducing mechanism, and the evaporator. A refrigeration cycle is formed by a compressor, a condenser, a pressure reducing mechanism, and an evaporator. In this refrigeration cycle, a hydrocarbon-based refrigerant (HC refrigerant) such as isobutane (R600a) is used.

密閉容器１７内には冷凍機油（潤滑油）が溜められており、クランクシャフト３の回転運動によるポンプ作用で引き上げられ、圧縮要素３０の摺動部へと送られる構造となっている。   Refrigerating machine oil (lubricating oil) is stored in the hermetic container 17, and is pulled up by a pump action by the rotational movement of the crankshaft 3 and sent to the sliding portion of the compression element 30.

次に、潤滑油１５の動作について詳細を述べる。   Next, the operation of the lubricating oil 15 will be described in detail.

密閉容器１７内底部に貯留された潤滑油１５は、クランクシャフト３の回転によって密閉容器１７内底部から上方へと導かれ、クランクシャフト３の上方位置に設けられた開口より噴出する構造となっている。より詳細には、クランクシャフト３の下端部に設けられた筒状の給油ピース７の遠心力を利用して密閉容器１７内底部に貯留された潤滑油１５を上昇させ、クランクシャフト３の上端部から潤滑油１５が噴出する。   Lubricating oil 15 stored in the inner bottom portion of the sealed container 17 is guided upward from the inner bottom portion of the sealed container 17 by the rotation of the crankshaft 3 and ejected from an opening provided at an upper position of the crankshaft 3. Yes. More specifically, the lubricating oil 15 stored in the inner bottom portion of the sealed container 17 is raised using the centrifugal force of the cylindrical oil supply piece 7 provided at the lower end portion of the crankshaft 3, and the upper end portion of the crankshaft 3 is raised. From which the lubricating oil 15 is ejected.

密閉容器１７内の空間に飛散した潤滑油１５は、ピストン４及びシリンダブロック１の摺動部に降りかかり潤滑を行うとともに、摺動部等で温度が上昇した潤滑油１５が密閉容器１７の内面に付着し、密閉容器１７を介して外部に放出することで、密閉型圧縮機全体を冷却する。   The lubricating oil 15 scattered in the space in the sealed container 17 falls on the sliding portions of the piston 4 and the cylinder block 1 to perform lubrication, and the lubricating oil 15 whose temperature has risen at the sliding portions etc. is applied to the inner surface of the sealed container 17. The whole hermetic compressor is cooled by adhering and discharging to the outside through the hermetic container 17.

さらに、飛散した潤滑油１５の一部は、吸込みマフラ１３の外表面に付着し、重力により下方へ移動するとともに、移動の過程で油滴が形成される。油滴となった潤滑油１５は、吸込みマフラ１３の吸込み口１３ａから冷媒とともに吸入される。   Furthermore, a part of the scattered lubricating oil 15 adheres to the outer surface of the suction muffler 13 and moves downward due to gravity, and oil droplets are formed in the course of movement. The lubricating oil 15 that has become oil droplets is sucked together with the refrigerant from the suction port 13 a of the suction muffler 13.

ところが、本実施形態では、吸込み口１３ａ上部の油受け部１４により、吸込み口１３ａへの潤滑油１５の移動を阻止し、油受け部１４の底部１４ａの傾斜によって、吸込み口１３ａ横面へ潤滑油１５の流れを作ることで、吸込みマフラ１３内に多量の潤滑油が流入することを防止し、圧縮室内への潤滑油流入量を抑え、性能を安定させることができる。   However, in this embodiment, the oil receiving portion 14 at the upper portion of the suction port 13a prevents the movement of the lubricating oil 15 to the suction port 13a, and the bottom surface 14a of the oil receiving portion 14 is inclined to lubricate the side surface of the suction port 13a. By making the flow of the oil 15, a large amount of lubricating oil can be prevented from flowing into the suction muffler 13, the amount of lubricating oil flowing into the compression chamber can be suppressed, and the performance can be stabilized.

また、吸込みマフラ吸込み口１３ａから流入した潤滑油１５の一部は、冷媒の流速が低下した際に、冷媒１６と分離され、重力により底部に落下し、吸込み部底部に備えた潤滑油排出孔より吸込みマフラ１３の外部へ排出される。   Further, a part of the lubricating oil 15 flowing in from the suction muffler suction port 13a is separated from the refrigerant 16 when the flow velocity of the refrigerant is reduced, and falls to the bottom due to gravity, and the lubricating oil discharge hole provided in the bottom of the suction part Further, it is discharged to the outside of the suction muffler 13.

尚、本形態は密閉型圧縮機の代表例であり、レシプロ型圧縮機，スクロール型圧縮機，ロータリー型圧縮機でも活用することができる。   This embodiment is a typical example of a hermetic compressor, and can be used in a reciprocating compressor, a scroll compressor, and a rotary compressor.

また、図５に示すように、上記の密閉型圧縮機５０を冷蔵庫１００に設置する。より詳細には、冷蔵庫本体１００ａに形成された貯蔵室１００ｂと、貯蔵室１００ｂと断熱区画された機械室１００ｃとを備え、密閉型圧縮機５０を機械室１００ｃに備える。これにより、収納容積拡大のために限られた空間となる機械室１００ｃに設置可能な、小型でかつ所望の運転能力を有する密閉型圧縮機を備えた冷蔵庫を提供することができる。また、騒音を低減するとともに冷却効率を向上でき、冷蔵庫１００の消費電力を低減することができる。   Further, as shown in FIG. 5, the above-described hermetic compressor 50 is installed in the refrigerator 100. More specifically, a storage room 100b formed in the refrigerator main body 100a, a storage room 100b and a machine room 100c partitioned by heat insulation are provided, and a hermetic compressor 50 is provided in the machine room 100c. Thereby, the refrigerator provided with the hermetic compressor which can be installed in the machine room 100c used as the space limited for expansion of storage capacity, and is small and has a desired operation capability can be provided. In addition, noise can be reduced, cooling efficiency can be improved, and power consumption of the refrigerator 100 can be reduced.

以上のように、本実施形態は、密閉容器１７内に、潤滑油１５と、冷媒ガスを吸入して圧縮する圧縮要素３０と、圧縮要素３０を駆動する電動要素４０とを収容した密閉型圧縮機５０において、圧縮要素３０の冷媒吸入ポートに吸込みマフラ１３を有し、吸込みマフラ１３は、密閉容器１７内に開口されて密閉容器１７内の冷媒ガスを吸入する吸込み口１３ａと、吸込み口１３ａから圧縮要素３０の吸込み部へ連通する通路部１３ｂとを有し、吸込み口１３ａと通路部１３ｂの係合部を一体形状として潤滑油１５の流入を抑制する。   As described above, in the present embodiment, the hermetic compression in which the lubricating oil 15, the compression element 30 that sucks and compresses the refrigerant gas, and the electric element 40 that drives the compression element 30 are accommodated in the sealed container 17. The machine 50 has a suction muffler 13 at the refrigerant suction port of the compression element 30. The suction muffler 13 is opened in the sealed container 17 and sucks the refrigerant gas in the sealed container 17, and the suction port 13a. And a passage portion 13b communicating with the suction portion of the compression element 30, and the engagement portion between the suction port 13a and the passage portion 13b is integrated to suppress the inflow of the lubricating oil 15.

また、吸込みマフラ１３の吸込み口１３ａ上部に油受け部１４を設け、潤滑油１５の保持量を増加させて吸込みマフラ１３の吸込み口１３ａへの潤滑油１５の流入を低減する。   Further, an oil receiving portion 14 is provided above the suction port 13 a of the suction muffler 13, and the amount of the lubricating oil 15 retained is increased to reduce the flow of the lubricating oil 15 into the suction port 13 a of the suction muffler 13.

また、吸込み口１３ａ上部の油受け部１４の底部１４ａは傾斜を有し、油受け部１４の底部１４ａに溜まった潤滑油１５は傾斜に沿って流れ落ちるので、吸込みマフラ１３内部への潤滑油１５流入量を低減させることができる。   Further, the bottom portion 14a of the oil receiving portion 14 above the suction port 13a has an inclination, and the lubricating oil 15 accumulated in the bottom portion 14a of the oil receiving portion 14 flows down along the inclination, so that the lubricating oil 15 into the suction muffler 13 is obtained. The amount of inflow can be reduced.

また、吸込み口１３ａと通路部１３ｂの係合部、すなわち嵌合部によるバラツキを低減することができるため、性能にバラツキのない密閉型圧縮機を提供することができる。   Moreover, since the variation by the engaging part of the suction inlet 13a and the channel | path part 13b, ie, a fitting part, can be reduced, the hermetic compressor without the performance variation can be provided.

１ シリンダブロック
１ａ 軸受部
１ｂ フレーム
１ｃ 軸受部上部
２ コネクティングロッド
３ クランクシャフト
３ａ クランクピン
４ ピストン
５ 固定子
６ 回転子
７ 給油ピース
８ バルブプレート
９ シリンダヘッド
１０ 吸入バルブ
１１ 吐出バルブ
１２ ヘッドボルト
１３ 吸込みマフラ
１３ａ 吸込み口
１３ｂ 通路部
１３ｃ 下マフラ
１３ｄ 中仕切り板
１３ｅ 上マフラ
１３ｆ 潤滑油排出孔
１４ 油受け部
１４ａ 底部
１５ 潤滑油
１７ 密閉容器
３０ 圧縮要素
４０ 電動要素
５０ 密閉型圧縮機
１００ 冷蔵庫 DESCRIPTION OF SYMBOLS 1 Cylinder block 1a Bearing part 1b Frame 1c Bearing part upper part 2 Connecting rod 3 Crankshaft 3a Crankpin 4 Piston 5 Stator 6 Rotor 7 Lubrication piece 8 Valve plate 9 Cylinder head 10 Intake valve 11 Discharge valve 12 Head bolt 13 Suction muffler 13a Suction port 13b Passage portion 13c Lower muffler 13d Middle partition plate 13e Upper muffler 13f Lubricating oil discharge hole 14 Oil receiving portion 14a Bottom portion 15 Lubricating oil 17 Sealed container 30 Compression element 40 Electric element 50 Sealed compressor 100 Refrigerator

Claims (2)

密閉容器内に、潤滑油と、冷媒ガスを吸入して圧縮する圧縮要素と、該圧縮要素を駆動する電動要素とを収容した密閉型圧縮機において、
前記圧縮要素の冷媒吸入ポートに吸込みマフラを有し、該吸込みマフラは、前記密閉容器内に開口されて前記密閉容器内の前記冷媒ガスを吸入する吸込み口と、前記吸込み口から前記圧縮要素の吸込み部へ連通する通路部とを有し、前記吸込み口と前記通路部の係合部を一体形状として前記潤滑油の流入を抑制する構成として、前記吸込み口と前記通路部を一体形状とした前記吸込みマフラの底部に潤滑油排出孔を有し、
前記吸込みマフラの前記吸込み口上部に油受け部を設け、前記吸込み口上部の前記油受け部の底部は傾斜を有し、前記油受け部の前記底部に溜まった前記潤滑油は前記傾斜に沿って流れ落ちた後に前記吸込み口の横面を流すことで、前記吸込みマフラの前記吸込み口への前記潤滑油の流入を低減することを特徴とする密閉型圧縮機。 In a hermetic compressor containing a lubricating oil, a compression element that sucks and compresses refrigerant gas, and an electric element that drives the compression element in a sealed container,
A suction muffler is provided in the refrigerant suction port of the compression element, and the suction muffler is opened in the sealed container and sucks the refrigerant gas in the sealed container; A passage portion communicating with the suction portion, and the engagement portion between the suction port and the passage portion is integrated to suppress the inflow of the lubricating oil, and the suction port and the passage portion are integrated. A lubricating oil discharge hole at the bottom of the suction muffler;
An oil receiving portion is provided at the upper portion of the suction port of the suction muffler, the bottom portion of the oil receiving portion at the upper portion of the suction port has an inclination, and the lubricating oil accumulated at the bottom portion of the oil receiving portion follows the inclination. The hermetic compressor is characterized by reducing the inflow of the lubricating oil into the suction port of the suction muffler by flowing the lateral surface of the suction port after flowing down. 冷蔵庫本体に形成された貯蔵室と、該貯蔵室と断熱区画された機械室と、を備え、請求項１に記載の密閉型圧縮機を前記機械室に備えたことを特徴とする冷蔵庫。 A refrigerator comprising: a storage room formed in a refrigerator main body; and a machine room partitioned from the storage room and a heat insulating section, wherein the hermetic compressor according to claim 1 is provided in the machine room.
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KR0130239Y1 (en) * 1995-12-30 1999-03-20 구자홍 Oil penetration protection structure in the muffler of a hermetic compressor
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