JP4269637B2 - Hermetic electric compressor - Google Patents

Hermetic electric compressor Download PDF

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Publication number
JP4269637B2
JP4269637B2 JP2002305437A JP2002305437A JP4269637B2 JP 4269637 B2 JP4269637 B2 JP 4269637B2 JP 2002305437 A JP2002305437 A JP 2002305437A JP 2002305437 A JP2002305437 A JP 2002305437A JP 4269637 B2 JP4269637 B2 JP 4269637B2
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JP
Japan
Prior art keywords
stopper
crankshaft
protrusion
electric compressor
compression element
Prior art date
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Expired - Lifetime
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JP2002305437A
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Japanese (ja)
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JP2004138018A (en
Inventor
武 大野
和宏 横田
昌彦 尾坂
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Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2002305437A priority Critical patent/JP4269637B2/en
Priority to US10/687,811 priority patent/US20040126249A1/en
Priority to CNB2003101138650A priority patent/CN1266380C/en
Priority to KR1020030072888A priority patent/KR20040034535A/en
Publication of JP2004138018A publication Critical patent/JP2004138018A/en
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Publication of JP4269637B2 publication Critical patent/JP4269637B2/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
    • 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
    • F04B39/121—Casings
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は冷蔵庫等、冷凍機器に搭載され冷媒を圧縮し吐出して冷却運転を行う密閉型電動圧縮機に関するものである。
【０００２】
【従来の技術】
従来の密閉型電動圧縮機としては,通常，上下部シェルからなる密閉容器，その密閉容器の内部に互いに関連された動作をするように設けられた電動要素および圧縮要素を備える（例えば、特許文献１参照）。
【０００３】
以下、図面を参照しながら上記従来の密閉型電動圧縮機を説明する。図４において、１は密閉型電動圧縮機を示し、その密閉容器２は、上下に２分割された上ケース２ａと下ケース２ｂの互いの開口端縁を突き合わせて、溶接等により結合して形成している。３はこの密閉容器２の内部に複数の弾性支持装置４を介して電動圧縮機体３が弾性的に支持されて収納される。電動要素５は密閉容器２内の上部に配置され、固定子６と回転子７を含んで構成される。下部には圧縮要素８が設置され、そしてこの圧縮要素８と電動要素５を連結するクランクシャフト９が回転子７に取り付けられている。
１０はクランクシャフト９の上端部を挿入するストッパーで密閉容器２の上部に取付けている。
【０００４】
以上のように構成された密閉型電動圧縮機について、以下その動作を説明する。
密閉容器２の上部に取付けられたストッパー１０の内径の中心にクランクシャフト９の上端部を挿入位置させて密閉型電動圧縮機１の輸送時等に電動圧縮機体３が振れ動く時、密閉容器２の内面への当たりを防止し電動圧縮機体３を保護している（例えば、特許文献１参照）。
【０００５】
【特許文献１】
特開平１１−３０３７４０号公報
【０００６】
【発明が解決しようとする課題】
しかしながら、上記従来の構成は、冷蔵庫および冷凍装置に密閉型電動圧縮機１を取付け固定した条件で密閉型電動圧縮機１の振動を絶縁する防振ゴムの硬度と取付け条件に加え配管接続の剛性とが強くなるほど密閉容器２は固定の状態になる。この取付け条件において、電動圧縮機体３の運転時に、外部からの衝撃振動が加わった際に弾性支持された電動圧縮機体３の動きによりクランクシャフト９の上端部がストッパー１０の内周面側に当りクランクシャフト９の回転力とストッパー１０の内周面側の摩擦によってクランクシャフト９が反発し、その反発の反動でストッパー１０の内周面側に当たりこの状態が連続に繰り返されストッパー１０の内周面に沿って回転運動しながら接触し騒音を発生するという欠点があった。
【０００７】
本発明は従来の課題を解決するもので、クランクシャフトの上端部が、ストッパーの内周面に沿って連続的に回転、接触して騒音を発生することのないことを目的とする。
【０００８】
【課題を解決するための手段】
本発明の請求項１に記載の発明は、密閉容器内に弾性支持された圧縮要素と、前記圧縮要素の上側に固定され、これを駆動する電動要素と、前記密閉容器の内側上部に固定され、前記圧縮要素を構成するクランクシャフトの上端部に遊嵌される略カップ状のストッパーとからなり、前記ストッパーには内周面側に突出した突起部を形成し、前記突起部は弾性支持された圧縮要素の傾き剛性の高い方向に設けることで、前記突起部と前記クランクシャフトの上端部の距離が狭くなる方向に対して、前記クランクシャフトの上端部と前記突起部の接触を防止するように形成したことを特徴としたものであり、クランクシャフトの上端部が、ストッパーの内周面側に沿って回転する際、ストッパーの内周面側に突出した突起部に衝突し、衝撃の反動により連続する回転運動を防止できるとともに、突起部とクランクシャフトの上端部との距離が狭くなる方向に対して、電動圧縮機の運転時はクランクシャフトの上端部に遊嵌されるストッパーの内周面側に突起した突起部とクランクシャフトの上端部とが接触することはないという作用を有する。
【０００９】
請求項２に記載の発明は、請求項１に記載の発明に、さらに、前記突起部は絞り成型によって前記ストッパーと一体に成型されたものであり、請求項１に記載の発明に加えて、容易に突起部を設けることができ、コストが上がらないようににできるという作用を有する。
【００１０】
請求項３に記載の発明は、請求項１または請求項２に記載の発明において、前記突起部は前記ストッパー内面の上下に亘って溝状に形成するように構成したものであり、請求項１または請求項２に記載の発明の作用に加えて、弾性支持されている圧縮要素の上下動の変化に対して、突起部とクランクシャフトの上端部側面に確実に衝突するという作用を有する。
【００１１】
請求項４に記載の発明は、請求項１から請求項３のいずれか一項に記載の発明において、前記突起部の先端部は曲面状を形成するように構成したものであり、請求項１から請求項３に記載の発明の作用に加えて、突起部の剛性が向上しクランクシャフトの上端部側面との衝突時に突起部の変形を抑えるという作用を有する。
【００１３】
【発明の実施の形態】
以下、本発明による密閉型電動圧縮機の実施例について、図面を参照しながら説明する。
なお、従来と同一構成については、同一符号を付して詳細な説明を省略する。
【００１４】
（実施の形態１）
図１は、本発明の実施の形態１による密閉型電動圧縮機の縦断面図であり、図２は同実施の形態の密閉型電動圧縮機のストッパー斜視図である。
【００１５】
図１、図２において，密閉容器１０１の内部にスプリング１０２により弾性支持された圧縮要素１０３と、前記圧縮要素１０３の上側に固定され、これを駆動する電動要素１０４と、密閉容器１０１の内側上部に固定され、圧縮要素１０３を構成するクランクシャフト１０５の上端部に遊嵌される略カップ状のストッパー１０６が密閉容器１０１内の上部に取り付けられる。前記ストッパー１０６には内周面側に突起した突起部１０６ａを形成することにより構成される。
【００１６】
突起部１０６ａはストッパー１０６を絞り加工して内面に突出させていることによって一体に成型する。また、突起部１０６ａは上下に亘った溝状の形状に形成され、さらに突起部１０６ａの先端部は曲面状に形成されているものである。
【００１７】
以上のような構成において、以下その動作を説明する。圧縮機の運転中に、圧縮負荷の変動や、密閉容器１０１に外力が加わると、スプリング１０２により弾性支持された圧縮要素１０３が揺動してクランクシャフト１０５の上端部がストッパー１０６の内周面に接触することがある。このようなケースではクランクシャフト１０５は自身の自転によりストッパー１０６との接触部が移動し、ストッパー１０６の内周面に沿って連続したすりこぎ回転する。しかし、本発明によれば、クランクシャフト１０５の上端部が突起部１０６ａに衝突し、その衝突による反動でストッパー１０６の内周面に衝突しながら連続的な回転運動が発生することを防止できる。このため、接触による騒音の発生を防止でき、この密閉型電動圧縮機を備えた冷蔵庫等を使用する使用者に不快感を与えることがない。
【００１８】
また、突起部１０６ａは上下に亘って溝形状としているので、スプリング１０２により弾性支持されている圧縮要素１０３が上下の変化に対して、突起部１０６ａとクランクシャフト１０５の上端部側面に確実に衝突する。さらに、突起部の先端部はエッジでなく曲面状としたので突起部１０６ａにクランクシャフト１０５の上端部とが衝突した場合に変形をすることがない。
【００１９】
（実施の形態２）
図３は、本発明の実施の形態２による密閉型電動圧縮機の密閉容器上部の斜視図である。
【００２０】
図３において、本実施の形態は、実施形態１による密閉型電動圧縮機に、さらに突起部１０６ａはスプリング１０２により弾性支持された圧縮要素１０３の傾き剛性の高い方向に設けたものである。なお、圧縮要素１０３の傾き剛性の高い方向とは、圧縮要素１０３の質量のアンバランスと、これを駆動する電動要素１０４の質量によって、傾き剛性は圧縮要素１０３の方向と圧縮要素１０３の方向に対し１８０度方向の電動要素の質量がかかっているため傾き剛性が低い方向である。 これに対し９０度方向側の質量の負荷は小さいため傾き剛性が高い方向となる。
【００２１】
以上のように本実施の形態の密閉型電動圧縮機は、前記圧縮要素１０３を構成するクランクシャフト１０５の上端部に遊嵌される略カップ状のストッパー１０６からなり、ストッパー１０６の内周面側に突出した突起部１０６ａとから構成されているので、クランクシャフト１０５の回転力の反発によりストッパー１０６の内周面に沿ってクランクシャフト１０５の上端部が回転運動を発生する際、クランクシャフト１０５の上端部は突起部１０６ａに衝突し、その衝突した反動でクランクシャフト１０５の上端部は遊嵌されるストッパー１０６の正規位置に戻り回転運動を防止できる。
【００２２】
なお、本実施の形態において、突起部１０６ａとクランクシャフト１０５の上端部との距離が狭くなる方向に対して、電動圧縮機体１０７の運転時はクランクシャフト１０５の上端部に遊嵌されるストッパー１０６の内周面側に突起した突起部１０６ａとが接触することがない。
【００２３】
【発明の効果】
以上説明したように請求項１に記載の発明は、突起部とクランクシャフトの上端部との距離が狭くなる方向に対して、電動圧縮機の運転時はクランクシャフトの上端部に遊嵌されるストッパーの内周面側に突起した突起部とクランクシャフトの上端部とが接触することはなく、さらにクランクシャフトとストッパーとの連続した回転運動を防止でき騒音の発生を低減できるという効果が得られる。
【００２４】
また、請求項２に記載の発明は、請求項１に記載の発明に加えて、コストが上がらないという効果を得られる。
【００２５】
また、請求項３に記載の発明は、請求項１または請求項２に記載の発明の効果に加えて、確実に回転運動を防止でき騒音の発生を低減できるという効果が得られる。
【００２６】
また、請求項４に記載の発明は、請求項１から請求項４のいずれか一項に記載の発明の効果に加えて、突起部の剛性が向上するという効果が得られる。
【図面の簡単な説明】
【図１】本発明による実施の形態１の密閉型電動圧縮機の縦断面図
【図２】同実施の形態の密閉型電動圧縮機のストッパー斜視図
【図３】本発明による実施の形態２の密閉型電動圧縮機の密閉容器上部の斜視図
【図４】従来の密閉型電動圧縮機の断面図
【符号の説明】
１０１ 密閉容器
１０３ 圧縮要素
１０４ 電動要素
１０５ クランクシャフト
１０６ ストッパー
１０６ａ 突起部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hermetic electric compressor that is mounted on a refrigeration apparatus such as a refrigerator and performs a cooling operation by compressing and discharging a refrigerant.
[0002]
[Prior art]
Conventional hermetic electric compressors usually include a hermetic container composed of upper and lower shells, and an electric element and a compression element provided inside the hermetic container so as to perform operations related to each other (for example, Patent Documents). 1).
[0003]
Hereinafter, the conventional hermetic electric compressor will be described with reference to the drawings. In FIG. 4, reference numeral 1 denotes a hermetic electric compressor, and the hermetic container 2 is formed by abutting the opening edges of the upper case 2a and the lower case 2b, which are divided into two parts, and joining them by welding or the like. is doing. 3, the electric compressor body 3 is elastically supported and stored in the sealed container 2 via a plurality of elastic support devices 4. The electric element 5 is arranged at the upper part in the sealed container 2 and includes a stator 6 and a rotor 7. A compression element 8 is installed in the lower part, and a crankshaft 9 that connects the compression element 8 and the electric element 5 is attached to the rotor 7.
Reference numeral 10 denotes a stopper for inserting the upper end portion of the crankshaft 9 and is attached to the upper portion of the sealed container 2.
[0004]
The operation of the hermetic electric compressor configured as described above will be described below.
When the electric compressor body 3 swings during transportation of the hermetic electric compressor 1 when the upper end of the crankshaft 9 is inserted into the center of the inner diameter of the stopper 10 attached to the upper part of the hermetic container 2, the hermetic container 2 is moved. The electric compressor body 3 is protected by preventing contact with the inner surface (see, for example, Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-303740
[Problems to be solved by the invention]
However, the above-described conventional configuration has the rigidity of the pipe connection in addition to the hardness of the vibration-proof rubber and the installation conditions that insulate the vibration of the hermetic electric compressor 1 under the condition that the hermetic electric compressor 1 is attached and fixed to the refrigerator and the freezer. The tighter the container 2, the more the sealed container 2 is fixed. Under this mounting condition, when the electric compressor body 3 is operated, the upper end portion of the crankshaft 9 hits the inner peripheral surface side of the stopper 10 due to the movement of the electric compressor body 3 elastically supported when an external impact vibration is applied. The crankshaft 9 repels due to the rotational force of the crankshaft 9 and the friction on the inner peripheral surface side of the stopper 10, and this reaction strikes the inner peripheral surface side of the stopper 10 and this state is repeated continuously, and the inner peripheral surface of the stopper 10. There is a drawback that it makes noise while making a rotational movement along the axis.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems, and an object of the present invention is to prevent the upper end portion of the crankshaft from continuously rotating and contacting along the inner peripheral surface of the stopper to generate noise.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, a compression element elastically supported in a sealed container, an electric element that is fixed to the upper side of the compression element and drives the same, and an inner upper part of the sealed container are fixed. A substantially cup-shaped stopper that is loosely fitted to the upper end portion of the crankshaft constituting the compression element. The stopper is formed with a protrusion protruding toward the inner peripheral surface, and the protrusion is elastically supported. By providing the compression element in a direction in which the inclination rigidity is high, it is possible to prevent contact between the upper end portion of the crankshaft and the protrusion portion in a direction in which the distance between the protrusion portion and the upper end portion of the crankshaft is reduced. When the upper end of the crankshaft rotates along the inner peripheral surface of the stopper, the upper end of the crankshaft collides with a protrusion protruding toward the inner peripheral surface of the stopper. The inner circumference of the stopper that can be loosely fitted to the upper end of the crankshaft during operation of the electric compressor in the direction in which the distance between the protrusion and the upper end of the crankshaft becomes narrower while preventing more continuous rotational movement. This has the effect that the protrusion protruding to the surface side does not come into contact with the upper end of the crankshaft .
[0009]
The invention according to claim 2 is the invention according to claim 1, wherein the protrusion is formed integrally with the stopper by drawing, and in addition to the invention according to claim 1, Protrusions can be easily provided, and the cost can be prevented from increasing.
[0010]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the protrusion is configured to be formed in a groove shape over the top and bottom of the stopper inner surface. Alternatively, in addition to the operation of the invention described in claim 2, it has an operation of reliably colliding with the protrusion and the side surface of the upper end of the crankshaft with respect to the vertical movement change of the compression element that is elastically supported.
[0011]
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the tip of the protrusion is configured to form a curved surface. In addition to the effects of the invention described in claims 3 to 3, the rigidity of the protrusion is improved, and the deformation of the protrusion is suppressed at the time of collision with the side surface of the upper end of the crankshaft.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a hermetic electric compressor according to the present invention will be described below with reference to the drawings.
In addition, about the same structure as the past, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0014]
(Embodiment 1)
1 is a longitudinal sectional view of a hermetic electric compressor according to a first embodiment of the present invention, and FIG. 2 is a perspective view of a stopper of the hermetic electric compressor according to the first embodiment.
[0015]
1 and 2, a compression element 103 elastically supported by a spring 102 inside the sealed container 101, an electric element 104 fixed to the upper side of the compression element 103 and driving the compression element 103, and an inner upper part of the sealed container 101 A substantially cup-shaped stopper 106 that is fixed to the upper end of the crankshaft 105 that constitutes the compression element 103 and is loosely fitted to the upper end of the sealed container 101 is attached. The stopper 106 is formed by forming a protruding portion 106a protruding toward the inner peripheral surface.
[0016]
The protrusion 106a is integrally molded by drawing the stopper 106 and projecting it to the inner surface. Further, the protrusion 106a is formed in a groove shape extending vertically, and the tip of the protrusion 106a is formed in a curved shape.
[0017]
The operation of the above configuration will be described below. During the operation of the compressor, when the compression load fluctuates or an external force is applied to the sealed container 101, the compression element 103 elastically supported by the spring 102 swings, and the upper end of the crankshaft 105 is the inner peripheral surface of the stopper 106. May come into contact. In such a case, the crankshaft 105 rotates by its own rotation so that the contact portion with the stopper 106 moves, and continuously rotates along the inner peripheral surface of the stopper 106. However, according to the present invention, it is possible to prevent the upper end portion of the crankshaft 105 from colliding with the protruding portion 106a and causing continuous rotational motion while colliding with the inner peripheral surface of the stopper 106 due to the reaction caused by the collision. For this reason, generation | occurrence | production of the noise by contact can be prevented and a user who uses the refrigerator etc. provided with this sealed electric compressor does not give a discomfort.
[0018]
In addition, since the protruding portion 106a has a groove shape extending vertically, the compression element 103 elastically supported by the spring 102 reliably collides with the protruding portion 106a and the side surface of the upper end of the crankshaft 105 with respect to the vertical change. To do. Furthermore, since the tip of the projection is curved rather than an edge, it does not deform when the projection 106a collides with the upper end of the crankshaft 105.
[0019]
(Embodiment 2)
FIG. 3 is a perspective view of the upper part of the hermetic container of the hermetic electric compressor according to the second embodiment of the present invention.
[0020]
In FIG. 3, the present embodiment is the same as the hermetic electric compressor according to the first embodiment, and the protrusion 106 a is provided in a direction in which the inclination rigidity of the compression element 103 elastically supported by the spring 102 is high. Note that the direction in which the compression element 103 has a high inclination rigidity means that the inclination rigidity is in the direction of the compression element 103 and the direction of the compression element 103 depending on the mass imbalance of the compression element 103 and the mass of the electric element 104 that drives the compression element 103. On the other hand, since the mass of the electric element in the direction of 180 degrees is applied, the inclination rigidity is low. On the other hand, since the mass load on the 90-degree direction side is small, the inclination rigidity is high.
[0021]
As described above, the hermetic electric compressor according to the present embodiment includes the substantially cup-shaped stopper 106 that is loosely fitted to the upper end portion of the crankshaft 105 that constitutes the compression element 103, and the inner peripheral surface side of the stopper 106. Since the protrusion 106a protrudes from the upper end of the crankshaft 105 due to the repulsion of the rotational force of the crankshaft 105, the upper end of the crankshaft 105 generates a rotational motion along the inner peripheral surface of the stopper 106. The upper end portion collides with the protrusion 106a, and the upper end portion of the crankshaft 105 returns to the normal position of the stopper 106 to be loosely fitted by the collision reaction, thereby preventing rotational movement.
[0022]
In the present embodiment, the stopper 106 that is loosely fitted to the upper end portion of the crankshaft 105 during operation of the electric compressor body 107 with respect to the direction in which the distance between the protruding portion 106a and the upper end portion of the crankshaft 105 becomes narrower. The protruding portion 106a protruding toward the inner peripheral surface side does not come into contact.
[0023]
【The invention's effect】
As described above, the invention according to claim 1 is loosely fitted to the upper end portion of the crankshaft during the operation of the electric compressor with respect to the direction in which the distance between the protrusion and the upper end portion of the crankshaft becomes narrower. The protrusion protruding on the inner peripheral surface side of the stopper does not come into contact with the upper end of the crankshaft, and further, it is possible to prevent continuous rotation movement between the crankshaft and the stopper and reduce the generation of noise. .
[0024]
In addition to the invention described in claim 1, the invention described in claim 2 can provide an effect that the cost does not increase.
[0025]
In addition to the effect of the invention described in claim 1 or 2, the invention described in claim 3 can obtain an effect of reliably preventing rotational movement and reducing noise generation.
[0026]
In addition to the effect of the invention according to any one of claims 1 to 4, the invention according to claim 4 provides an effect of improving the rigidity of the protrusion.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a hermetic electric compressor according to a first embodiment of the present invention. FIG. 2 is a perspective view of a stopper of the hermetic electric compressor according to the first embodiment. Fig. 4 is a perspective view of the upper part of the hermetic container of the hermetic electric compressor of Fig.
101 Airtight container 103 Compression element 104 Electric element 105 Crankshaft 106 Stopper 106a Projection

Claims (4)

密閉容器内に弾性支持された圧縮要素と、前記圧縮要素の上側に固定され、これを駆動する電動要素と、前記密閉容器の内側上部に固定され、前記圧縮要素を構成するクランクシャフトの上端部に遊嵌される略カップ状のストッパーとを備えるとともに、前記ストッパーには内周面側に突出した突起部を形成し、前記突起部は弾性支持された圧縮要素の傾き剛性の高い方向に設けることで、前記突起部と前記クランクシャフトの上端部の距離が狭くなる方向に対して、前記クランクシャフトの上端部と前記突起部の接触を防止するように形成したことを特徴とした密閉型電動圧縮機。A compression element elastically supported in the hermetic container; an electric element that is fixed to the upper side of the compression element and drives the same; and an upper end of a crankshaft that is fixed to the inner upper part of the hermetic container and constitutes the compression element A substantially cup-shaped stopper that is loosely fitted to the stopper, and a protrusion projecting toward the inner peripheral surface is formed on the stopper, and the protrusion is provided in a direction in which the inclination rigidity of the elastically supported compression element is high. Thus, the sealed electric motor is formed so as to prevent contact between the upper end portion of the crankshaft and the protrusion portion in a direction in which the distance between the protrusion portion and the upper end portion of the crankshaft becomes narrower. Compressor. 前記突起部は絞り成型によって前記ストッパーと一体に成型された請求項１記載の密閉型電動圧縮機。  The hermetic electric compressor according to claim 1, wherein the protrusion is formed integrally with the stopper by drawing. 前記突起部は前記ストッパー内面の上下に亘って溝状の形状とした請求項１または２に記載の密閉型電動圧縮機  The hermetic electric compressor according to claim 1, wherein the protruding portion has a groove shape extending vertically on the inner surface of the stopper. 前記突起部の先端部は曲面状に形成した請求項１から３のいずれか一項に記載の密閉型電動圧縮機。  The hermetic electric compressor according to any one of claims 1 to 3, wherein a tip portion of the protrusion is formed in a curved surface shape.
JP2002305437A 2002-10-21 2002-10-21 Hermetic electric compressor Expired - Lifetime JP4269637B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002305437A JP4269637B2 (en) 2002-10-21 2002-10-21 Hermetic electric compressor
US10/687,811 US20040126249A1 (en) 2002-10-21 2003-10-20 Hermetic electrically driven compressor
CNB2003101138650A CN1266380C (en) 2002-10-21 2003-10-20 Closed electric compressor
KR1020030072888A KR20040034535A (en) 2002-10-21 2003-10-20 Hermetic electric compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002305437A JP4269637B2 (en) 2002-10-21 2002-10-21 Hermetic electric compressor

Publications (2)

Publication Number Publication Date
JP2004138018A JP2004138018A (en) 2004-05-13
JP4269637B2 true JP4269637B2 (en) 2009-05-27

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US (1) US20040126249A1 (en)
JP (1) JP4269637B2 (en)
KR (1) KR20040034535A (en)
CN (1) CN1266380C (en)

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CN102352830B (en) * 2011-10-28 2014-06-18 黄石东贝电器股份有限公司 Sealed compressor shell

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Publication number Priority date Publication date Assignee Title
US2141053A (en) * 1934-10-31 1938-12-20 Gen Motors Corp Motor-compressor unit for refrigerating apparatus
US3664771A (en) * 1970-02-20 1972-05-23 Tokyo Shibaura Electric Co Hermetically sealed electric compressor
DK318576A (en) * 1975-08-04 1977-02-05 Lennox Ind Inc DEVICE FOR COMPRESSING VIBRATIONS BY COMPRESSORS
US5118263A (en) * 1990-04-27 1992-06-02 Fritchman Jack F Hermetic refrigeration compressor
US5176460A (en) * 1991-06-10 1993-01-05 Stry-Lenkoff Company Pen cap for a writing instrument barrel
US5660256A (en) * 1995-09-22 1997-08-26 Gkn Automotive, Inc. Dynamic damper
TW411382B (en) * 1997-10-23 2000-11-11 Toshiba Corp Helical compressor and method of assembling the same
US6171077B1 (en) * 1998-03-11 2001-01-09 Tecumseh Products Company Suspension spring support for hermetic compressors
KR100318598B1 (en) * 2000-03-07 2001-12-28 이충전 Noise Falling Apparatus Of a Compressor
KR100350805B1 (en) * 2000-03-09 2002-09-05 삼성광주전자 주식회사 Sealed compressor
USD436997S1 (en) * 2000-04-04 2001-01-30 Pioneer Industrial Corporation Pen cap
JP3882902B2 (en) * 2002-02-22 2007-02-21 株式会社ショーワ Dynamic damper and propeller shaft

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CN1266380C (en) 2006-07-26
JP2004138018A (en) 2004-05-13
US20040126249A1 (en) 2004-07-01
KR20040034535A (en) 2004-04-28
CN1497176A (en) 2004-05-19

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