JPH1122683A - Hermetic compressor - Google Patents

Hermetic compressor

Info

Publication number
JPH1122683A
JPH1122683A JP9173438A JP17343897A JPH1122683A JP H1122683 A JPH1122683 A JP H1122683A JP 9173438 A JP9173438 A JP 9173438A JP 17343897 A JP17343897 A JP 17343897A JP H1122683 A JPH1122683 A JP H1122683A
Authority
JP
Japan
Prior art keywords
crankshaft
outer peripheral
permanent magnet
peripheral surface
rotating shaft
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
Application number
JP9173438A
Other languages
Japanese (ja)
Inventor
Hiroyuki Fukuhara
弘之 福原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9173438A priority Critical patent/JPH1122683A/en
Publication of JPH1122683A publication Critical patent/JPH1122683A/en
Pending legal-status Critical Current

Links

Landscapes

  • Applications Or Details Of Rotary Compressors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PROBLEM TO BE SOLVED: To inexpensively manufacture a hermetic compressor by arranging plural ribs extending in the shaft direction on the rotary shaft outer peripheral surface of a crankshaft, forming the rotor of an electric motor by fitting a cylindrical tube in the outer peripheral surface of a permanent magnet, and setting an outside diameter of the rotary shaft outer peripheral surface to install the permanent magnet larger than a maximum outside diameter of the crankshaft. SOLUTION: A compression mechanism 2 and a stator 3 of an electric motor are fixed inside a sealed vessel 1, and a basin 4 is arranged in its bottom part. The electric motor is composed of the stator 3 integrally installed in the sealed vessel 1, a permanent magnet 6b which is arranged inside the stator 3 and is larger than a maximum outside diameter of a balance weight 9 of a crankshaft 6 and is directly installed on an outer peripheral shaft 6a having plural ribs 20 and a cylindrical tube 5 fitted in an outer periphery of the permanent magnet 6b, and rotates by being started by electromagnetic force generated between it and the stator 3. Therefore, even if an expensive material is not used, a rotor which is easily worked by a form tool such as a broach and is integrally formed with an inexpensive crankshaft, can be manufactured, and an inexpensive compressor is obtained.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、例えば、回転型モ
ータの回転力をクランクシャフトを介して圧縮機構部に
伝達する密閉型圧縮機に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor for transmitting the torque of a rotary motor to a compression mechanism via a crankshaft.

【0002】[0002]

【従来の技術】従来の技術を、第4図を参照して説明す
る。第4図に示すように、密閉容器1の内部に圧縮機構
2と電動機の固定子3を固定し、さらに底部に油を溜め
る油溜4が設けてある。
2. Description of the Related Art A conventional technique will be described with reference to FIG. As shown in FIG. 4, a compression mechanism 2 and a stator 3 of an electric motor are fixed inside a closed container 1, and an oil reservoir 4 for storing oil is provided at a bottom portion.

【0003】電動機は、前記密閉容器1内に一体的に取
り付けられた前記固定子3と、前記固定子3の内側に配
置されるとともに、磁性材料で製作されたクランクシャ
フト6の外周軸6aに永久磁石6bを直接取り付け、永
久磁石6bの外周面に円筒管5を嵌入させ、回転子とし
ており、クランクシャフト6の外周軸6aに取り付けら
れた永久磁石6bにより、前記固定子3との間に発生し
た電磁力により起動されて回転するクランクシャフトと
一体に形成された構成になっている。
[0003] The electric motor is connected to the stator 3 integrally mounted in the closed container 1 and the outer peripheral shaft 6a of the crankshaft 6 which is disposed inside the stator 3 and is made of a magnetic material. The permanent magnet 6b is directly attached, the cylindrical tube 5 is fitted into the outer peripheral surface of the permanent magnet 6b, and the rotor is used as a rotor. The permanent magnet 6b attached to the outer peripheral shaft 6a of the crankshaft 6 allows the permanent magnet 6b to be interposed between the permanent magnet 6b and the stator 3. It is configured to be integrally formed with a crankshaft that is activated and rotated by the generated electromagnetic force.

【0004】そして、前記クランクシャフト6は回転子
と一体形成されているため回転し、前記クランクシャフ
ト6を介して、電動機の駆動力を例えばロータリ式ある
いはスクロール式等の前記圧縮機構2に伝達している。
本例では前記圧縮機構2としてスクロール式を示してい
る。
Since the crankshaft 6 is formed integrally with the rotor, the crankshaft 6 rotates and transmits the driving force of the electric motor to the compression mechanism 2 of, for example, a rotary type or a scroll type via the crankshaft 6. ing.
In this example, a scroll type is shown as the compression mechanism 2.

【0005】前記クランクシャフト一体型の回転子6の
前記永久磁石6bを取り付ける前記外周軸6aには、前
記永久磁石6bの円周方向の位置を決め、固定子3との
間に発生した電磁力を確実にクランクシャフト6に伝え
るために複数のリブ20が設けられている。
The position of the permanent magnet 6b in the circumferential direction is determined on the outer peripheral shaft 6a for mounting the permanent magnet 6b of the crankshaft-integrated rotor 6, and the electromagnetic force generated between the permanent magnet 6b and the stator 3 is determined. Are transmitted to the crankshaft 6 without fail.

【0006】また、前記クランクシャフト6には、前記
クランクシャフト6が受ける偏心負荷とつりあいをとる
ためのバランスウェイト9が設けられており、前記バラ
ンスウェイト9の外周にはカバー10が配設されてい
る。前記バランスウェイト9は、通常クランクシャフト
6の長さを短くするため、可能な限り半径方向に大き
く、長さ方向に薄くするため、クランクシャフト一体型
の回転子の場合、永久磁石6bを取り付ける外周軸6a
の外形より大きくなる。
The crankshaft 6 is provided with a balance weight 9 for balancing the eccentric load received by the crankshaft 6, and a cover 10 is provided on the outer periphery of the balance weight 9. I have. The balance weight 9 is usually made as large as possible in the radial direction to shorten the length of the crankshaft 6 and made thinner in the length direction. Shaft 6a
Larger than the outer shape.

【0007】さらに、前記クランクシャフト6の軸心に
は、回転軸方向に貫通する軸心孔7が設けられており、
オイルポンプ8により前記油溜4より吸入した油を前記
圧縮機構2に供給している。前記オイルポンプ8には油
内の異物を除去するためのスクリーン8aが配設されて
いる。
Further, an axial hole 7 is provided in the axis of the crankshaft 6 so as to penetrate in the direction of the rotation axis.
Oil sucked from the oil reservoir 4 by an oil pump 8 is supplied to the compression mechanism 2. The oil pump 8 is provided with a screen 8a for removing foreign matter in the oil.

【0008】[0008]

【発明が解決しようとする課題】このような従来の密閉
型圧縮機では、クランクシャフト6の永久磁石6bを取
り付ける外周軸6aに永久磁石の高さより低いリブ20
が軸方向に入っているために、一般に行われている軸を
中心にして回転させながら旋削あるいは研削加工する高
能率加工を行うことが出来ず、またクランクシャフト6
の長さを短くするためバランスウェイト9の外形が外周
軸6aより大きくなっているため、フライスあるいはマ
シニングセンタといった加工能率の悪い加工方法でのみ
製作可能となるため高価となっている。
In such a conventional hermetic compressor, a rib 20 lower than the height of the permanent magnet is provided on an outer peripheral shaft 6a on which the permanent magnet 6b of the crankshaft 6 is mounted.
Is in the axial direction, it is not possible to perform high-efficiency machining such as turning or grinding while rotating around the axis, which is generally performed, and the crankshaft 6
Since the outer shape of the balance weight 9 is larger than the outer peripheral shaft 6a in order to shorten the length of the balance weight 9, the balance weight 9 can be manufactured only by a processing method with a low processing efficiency such as a milling machine or a machining center, so that it is expensive.

【0009】また、クランクシャフト6の回転により、
バランスウェイト9が抵抗となり、性能低下の原因とな
る。さらに、圧縮機が横型の場合には、バランスウェイ
ト9が油溜4の油を攪拌することになり、密閉容器1内
の油が飛散をひきおこしたり、攪拌による抵抗のため圧
縮機の入力増加や攪拌による抵抗が継続的であるため圧
縮機の電流変動の原因となっている。また、それを防ぐ
ためには、追加部品のカバー10が必要となり、高価
で、複雑な構造となってしまう。
Further, the rotation of the crankshaft 6 causes
The balance weight 9 becomes a resistance and causes a decrease in performance. Further, when the compressor is a horizontal type, the balance weight 9 stirs the oil in the oil reservoir 4, causing the oil in the closed container 1 to scatter or increase the input of the compressor due to resistance due to stirring. Since the resistance due to the stirring is continuous, it causes the current fluctuation of the compressor. In order to prevent this, a cover 10 for additional components is required, which results in an expensive and complicated structure.

【0010】一方、圧縮機構2に潤滑するための油を供
給する場合、潤滑部への異物の噛み込みを防止する必要
がある。その場合、潤滑油の供給通路に異物流入防止の
スクリーン8a等を追加し、高価あるいは複雑な構造と
なっている。
On the other hand, when supplying oil for lubrication to the compression mechanism 2, it is necessary to prevent foreign matter from getting into the lubrication section. In that case, a screen 8a or the like for preventing inflow of foreign matter is added to the lubricating oil supply passage, and the structure is expensive or complicated.

【0011】[0011]

【課題を解決するための手段】上記課題を解決するため
に本発明は、密閉容器の内部に電動機と、この電動機の
駆動力をクランクシャフトを介して伝達される圧縮機構
部とを有し、クランクシャフトを磁性材料とし、その回
転軸外周面に直接永久磁石を取り付け、さらにその永久
磁石の高さより低い軸方向にのびる複数のリブを設け、
永久磁石の外周面に円筒管を嵌入させて電動機回転子と
し、永久磁石を取り付ける回転軸外周面の外径を前記ク
ランクシャフトの最大外径より大きくしたものである。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises an electric motor inside a closed container, and a compression mechanism for transmitting a driving force of the electric motor via a crankshaft, Using the crankshaft as a magnetic material, a permanent magnet is directly attached to the outer peripheral surface of the rotating shaft, and a plurality of ribs extending in an axial direction lower than the height of the permanent magnet are provided.
A cylindrical tube is fitted into the outer peripheral surface of a permanent magnet to form a motor rotor, and the outer diameter of the outer peripheral surface of a rotating shaft on which the permanent magnet is mounted is larger than the maximum outer diameter of the crankshaft.

【0012】上記課題を解決するために本発明は、密閉
容器の内部に電動機と、この電動機の駆動力をクランク
シャフトを介して伝達される圧縮機構部とを有し、クラ
ンクシャフトを磁性材料とし、その回転軸外周面の一部
にバランスウェイト部を形成する凹部を設け、前記回転
軸外周面に直接永久磁石を取り付けさらにその永久磁石
の高さよりも低い軸方向に伸びる複数のリブを設け、永
久磁石の外周面に円筒管を嵌入させ、前記電動機回転子
とし、永久磁石を取り付ける回転軸外周面の外径を前記
クランクシャフトの最大外径より大きくしたものであ
る。
In order to solve the above-mentioned problems, the present invention has an electric motor and a compression mechanism for transmitting the driving force of the electric motor via a crankshaft inside a closed container, wherein the crankshaft is made of a magnetic material. A concave portion forming a balance weight portion is provided in a part of the outer peripheral surface of the rotating shaft, a permanent magnet is directly attached to the outer peripheral surface of the rotating shaft, and a plurality of ribs extending in an axial direction lower than the height of the permanent magnet are provided. A cylindrical tube is fitted into an outer peripheral surface of a permanent magnet to form the motor rotor, and an outer diameter of a rotating shaft outer peripheral surface on which the permanent magnet is mounted is larger than a maximum outer diameter of the crankshaft.

【0013】上記課題を解決するために本発明は、密閉
容器の内部に電動機と、この電動機の駆動力をクランク
シャフトを介して伝達される圧縮機構部とを有し、この
クランクシャフトを磁性材料とし、クランクシャフトの
反圧縮機構部側端部にオイルポンプを連結し、クランク
シャフトに、回転軸方向に貫通する軸心孔と、軸心孔と
連通しクランクシャフトの回転軸外周面の一部に設けた
凹部に開放する連通孔とを形成し、さらに回転軸外周面
の一部にバランスウェイト部を形成する凹部と前記回転
軸外周面に直接取り付けられた永久磁石の高さよりも低
い軸方向に伸びる複数のリブを設け、永久磁石の外周面
に円筒管を嵌入させ、電動機回転子とし、永久磁石を取
り付ける回転軸外周面の外径を前記クランクシャフトの
最大外径より大きくしたものである。
In order to solve the above-mentioned problems, the present invention has an electric motor and a compression mechanism for transmitting a driving force of the electric motor via a crankshaft inside a closed container. An oil pump is connected to the end of the crankshaft on the side opposite to the compression mechanism, and an axial hole penetrating the crankshaft in the direction of the rotational axis, and a portion of the outer peripheral surface of the rotational shaft of the crankshaft communicating with the axial hole. A communication hole is formed in the recess provided on the rotary shaft, and a recess forming a balance weight portion on a part of the outer peripheral surface of the rotary shaft, and an axial direction lower than the height of the permanent magnet directly attached to the outer peripheral surface of the rotary shaft. Provide a plurality of ribs extending to the outer periphery of the permanent magnet, fit a cylindrical tube into the outer peripheral surface of the permanent magnet, and use it as a motor rotor. The outer diameter of the outer peripheral surface of the rotating shaft to which the permanent magnet is attached is larger than the maximum outer diameter of the crankshaft. One in which the.

【0014】[0014]

【発明の実施の形態】請求項1に記載の発明は、磁性材
料よりなるクランクシャフトに軸方向に伸びた永久磁石
より低い軸方向に伸びたリブを設け、クランクシャフト
の最大外径より大きい回転軸外周面に直接永久磁石を取
り付け、永久磁石の外周面に円筒管を嵌入することによ
り回転子一体型のクランクシャフトを構成するものであ
る。そしてこの構成によれば、リブの付いたクランクシ
ャフトの最大外周の加工が総形工具で行うことが出来る
ので加工費が安くなり、安価な密閉型圧縮機を提供する
ことが出来る。
According to the first aspect of the present invention, a crankshaft made of a magnetic material is provided with ribs extending in the axial direction lower than permanent magnets extending in the axial direction, and the rotation is larger than the maximum outer diameter of the crankshaft. A permanent magnet is directly attached to the outer peripheral surface of the shaft, and a cylindrical tube is fitted into the outer peripheral surface of the permanent magnet to form a rotor-integrated crankshaft. According to this configuration, the maximum outer circumference of the crankshaft with the ribs can be machined with a forming tool, so that the machining cost is reduced, and an inexpensive hermetic compressor can be provided.

【0015】請求項2に記載の発明は、磁性材料よりな
るクランクシャフトに回転軸外周面の一部にバランスウ
ェイト部を形成する凹部と永久磁石の高さより低い軸方
向に伸びるリブを設け、クランクシャフトの最大外形よ
り大きい回転軸外周面に直接永久磁石を取り付け、その
永久磁石の外周面に円筒管を嵌入させてクランクシャフ
ト一体型の電動機回転子とするものである。そしてこの
構成によれば、回転時に抵抗となる凸凹部をなくすこと
ができ、回転時の抵抗低減となったり、横型圧縮機の場
合には、油溜の油の攪拌を防止でき、さらにリブの付い
たクランクシャフトの最大外周の加工が総形工具で行う
ことが出来るので加工費が安くなり、安価で高効率な密
閉型圧縮機を提供することが出来る。
According to a second aspect of the present invention, a crankshaft made of a magnetic material is provided with a concave portion forming a balance weight portion on a part of an outer peripheral surface of a rotary shaft and a rib extending in an axial direction lower than the height of the permanent magnet. A permanent magnet is directly attached to the outer peripheral surface of a rotating shaft larger than the maximum outer shape of the shaft, and a cylindrical tube is fitted into the outer peripheral surface of the permanent magnet to form a crankshaft-integrated motor rotor. According to this configuration, it is possible to eliminate the convex and concave portions that become a resistance during rotation, to reduce the resistance during rotation, and in the case of a horizontal compressor, to prevent the oil in the oil reservoir from being agitated, and to further reduce the ribs. Since the machining of the maximum outer circumference of the attached crankshaft can be performed with a forming tool, the machining cost is reduced, and a low-cost and highly efficient hermetic compressor can be provided.

【0016】請求項3に記載の発明は、クランクシャフ
トを磁性材料とし、そのクランクシャフトの反圧縮機構
部側端部にオイルポンプを連結し、クランクシャフト
に、回転軸方向に貫通する軸心孔と、軸心孔と連通しク
ランクシャフトの回転軸外周面の一部に設けた凹部に開
放する連通孔とを形成し、さらに回転軸外周面の一部に
バランスウェイト部を形成する凹部と回転軸外周面に直
接取り付けられた永久磁石の高さよりも低い軸方向に伸
びる複数のリブを設け、永久磁石の外周面に円筒管を嵌
入させ、クランクシャフト一体型の電動機回転子とし、
回転軸外周面の外形をクランクシャフトの最大外形より
大きく構成したものである。そしてこの構成によれば、
圧縮機構部を潤滑する油から異物を回転軸の軸心孔を通
る間に分離でき潤滑部への異物の進入を防止でき、回転
時に抵抗となる凸凹部をなくすことができ回転時の抵抗
低減となったり横型圧縮機の場合には油溜の油の攪拌を
防止でき、さらにリブの付いたクランクシャフトの最大
外周の加工が総形工具で行うことが出来るので加工費が
安くなり、安価で効率が良く信頼性の高い密閉型圧縮機
を提供することが出来る。
According to a third aspect of the present invention, the crankshaft is made of a magnetic material, an oil pump is connected to the end of the crankshaft on the side opposite to the compression mechanism, and an axial hole passing through the crankshaft in the direction of the rotation axis. And a communication hole that communicates with the shaft hole and a communication hole that opens to a recess provided in a part of the outer peripheral surface of the rotating shaft of the crankshaft, and further forms a balance weight part in a part of the outer peripheral surface of the rotating shaft. A plurality of ribs extending in the axial direction lower than the height of the permanent magnet directly attached to the outer peripheral surface of the shaft are provided, and a cylindrical tube is inserted into the outer peripheral surface of the permanent magnet to form a crankshaft integrated motor rotor,
The outer shape of the outer peripheral surface of the rotating shaft is configured to be larger than the maximum outer shape of the crankshaft. And according to this configuration,
Foreign matter can be separated from the oil that lubricates the compression mechanism while passing through the shaft hole of the rotating shaft, preventing foreign matter from entering the lubricating part, eliminating unevenness that becomes a resistance during rotation and reducing resistance during rotation. In the case of a horizontal compressor, the oil in the oil sump can be prevented from being agitated, and the maximum outer circumference of the crankshaft with ribs can be machined with a full-form tool, so machining costs are low and inexpensive. An efficient and highly reliable hermetic compressor can be provided.

【0017】[0017]

【実施例】以下、本発明の実施例について図面を参照し
て説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0018】(実施例1)本発明の一実施例を、第1図
に示す。図に示すように密閉容器1の内部に圧縮機構2
と電動機の固定子3を固定し、その底部に油を溜める油
溜4が設けられている。電動機は、前記密閉容器1内に
一体的に取り付けられた前記固定子3と、前記固定子3
の内側に配置され、クランクシャフト6のバランスウェ
イト9の最大外径より大きい軸方向に複数のリブ20を
持つ外周軸6aに直接取り付けられた永久磁石6bと、
前記永久磁石6bの外周に嵌入された円筒管5からな
り、前記固定子3との間に発生した電磁力により起動さ
れて回転する。永久磁石としては、一般にフェライト磁
石が使用されるが、Ne−Fe−B系等の希土類磁石を
プラスチック磁石として使用する場合もある。
(Embodiment 1) An embodiment of the present invention is shown in FIG. As shown in FIG.
And a stator 3 of the electric motor, and an oil reservoir 4 for storing oil is provided at the bottom thereof. An electric motor includes the stator 3 integrally mounted in the closed container 1 and the stator 3.
And a permanent magnet 6b directly mounted on an outer peripheral shaft 6a having a plurality of ribs 20 in an axial direction larger than the maximum outer diameter of the balance weight 9 of the crankshaft 6,
It consists of a cylindrical tube 5 fitted on the outer periphery of the permanent magnet 6b, and is activated and rotated by electromagnetic force generated between the permanent magnet 6b and the stator 3. A ferrite magnet is generally used as the permanent magnet, but a rare earth magnet such as a Ne—Fe—B system may be used as a plastic magnet.

【0019】ここでクランクシャフト6の外周軸6aの
外径は、バランスウェイト9最大外径より大きく構成さ
れている。ここに取り付けられる磁石の形態は、フェラ
イト磁石等の場合は、扇状であり、2〜8分割された磁
石を外周軸6aに設けられたリブ20の間に接着剤等で
クランクシャフト6に取り付け、その後磁石外周に円筒
管5を嵌入し固定する。また永久磁石6bの取り付けに
は、接着剤以外にも機械的固定手段がとられることもあ
る。
Here, the outer diameter of the outer peripheral shaft 6a of the crankshaft 6 is configured to be larger than the maximum outer diameter of the balance weight 9. The form of the magnet attached here is a fan shape in the case of a ferrite magnet or the like, and the magnet divided into two to eight is attached to the crankshaft 6 with an adhesive or the like between the ribs 20 provided on the outer peripheral shaft 6a, Thereafter, the cylindrical tube 5 is fitted around the magnet and fixed. The permanent magnet 6b may be attached by a mechanical fixing means other than the adhesive.

【0020】また、前記クランクシャフト6は前記回転
子5と一体に構成されているため、前記クランクシャフ
ト6を介して、電動機の駆動力を前記圧縮機構2に伝達
している。本例では前記圧縮機構2としてスクロール式
を示している。
Since the crankshaft 6 is formed integrally with the rotor 5, the driving force of the electric motor is transmitted to the compression mechanism 2 via the crankshaft 6. In this example, a scroll type is shown as the compression mechanism 2.

【0021】上記実施例において、クランクシャフト6
の永久磁石6bを取り付けるリブ20のついた外周軸6
aを製作することは旋削あるいは研削といったクランク
シャフト6を回転させながら加工する高能率な加工を行
うことが困難であり、フライスやマシニングセンタなど
の加工能率の低い加工方法を採らざるを得ず加工コスト
が上がるところを、バランスウェイト9よりも外周軸6
aの方が外形が大きいため、ブローチなどの総形工具で
一度に能率よく加工できるので安価な部品を製作出来、
安価な圧縮機を提供することができる。
In the above embodiment, the crankshaft 6
Peripheral shaft 6 with rib 20 for attaching permanent magnet 6b
It is difficult to manufacture a with high efficiency machining such as turning or grinding while rotating the crankshaft 6, and it is necessary to use a machining method with a low machining efficiency such as a milling machine or a machining center. Is higher than the balance weight 9 on the outer peripheral shaft 6
Since a has a larger outer shape, it can be efficiently processed at once with a full-form tool such as a broach, so inexpensive parts can be manufactured.
An inexpensive compressor can be provided.

【0022】(実施例2)図2は第2の発明の実施例を
示しており、前記クランクシャフト6の最大外径より大
きく永久磁石6bの位置を決めるために軸方向に複数の
リブ20を持つ外周軸6aには、前記クランクシャフト
6が受ける偏心負荷とつりあいをとるためのバランスウ
ェイトを形成するための凹部6aが設けられており、反
凹部側がバランスウェイト部となっている。
(Embodiment 2) FIG. 2 shows an embodiment of the second invention. In order to determine the position of the permanent magnet 6b larger than the maximum outer diameter of the crankshaft 6, a plurality of ribs 20 are formed in the axial direction. The outer peripheral shaft 6a has a concave portion 6a for forming a balance weight for balancing the eccentric load received by the crankshaft 6, and a balance weight portion on the side opposite to the concave portion.

【0023】上記実施例において、クランクシャフト6
の回転時に抵抗となるバランスウェイトの凹凸部をなく
すことができ、回転時の抵抗低減となり、横型圧縮機の
場合には、油溜の油の攪拌を防止でき、さらにリブ20
の付いたクランクシャフト6の外周軸6aの加工がブロ
ーチなどの総形工具で行うことが出来るので加工費が安
くなり、安価で高効率な密閉型圧縮機を提供することが
出来る。
In the above embodiment, the crankshaft 6
In the case of a horizontal compressor, it is possible to prevent agitation of the oil in the oil sump, and further to reduce the resistance during rotation.
Since the machining of the outer peripheral shaft 6a of the crankshaft 6 with the mark can be performed by using a forming tool such as a broach, the machining cost can be reduced, and an inexpensive and highly efficient hermetic compressor can be provided.

【0024】(実施例3)さらに、図3は前記クランク
シャフト6の反圧縮機構側端部にはオイルポンプ8が配
設され、前記クランクシャフト6の軸心に設けられた回
転軸方向に貫通する軸心孔7を通して、前記イルポンプ
7により油溜4より吸入した油を圧縮機構2に供給して
いる。前記クランクシャフト6にはさらに、外周軸6a
の一部に設けた凹部6hに開放する連通孔6iとを形成
し、前記圧縮機構2を潤滑する油が通過する際に、前記
クランクシャフト6の回転による遠心力により油内の異
物を分離、除去している。
(Embodiment 3) Further, FIG. 3 shows that an oil pump 8 is provided at the end of the crankshaft 6 on the side opposite to the compression mechanism, and penetrates in the direction of the rotation axis provided at the axis of the crankshaft 6. The oil sucked from the oil reservoir 4 by the oil pump 7 is supplied to the compression mechanism 2 through the shaft hole 7. The crankshaft 6 further includes an outer peripheral shaft 6a.
A communication hole 6i is formed in a concave portion 6h provided in a part of the cylinder, and when oil for lubricating the compression mechanism 2 passes, foreign matter in the oil is separated by centrifugal force caused by rotation of the crankshaft 6. Has been removed.

【0025】そしてこの構成によれば、圧縮機構部を潤
滑する油から異物をクランクシャフト6の軸心孔7を通
る間に分離でき潤滑部への異物の進入を防止でき、クラ
ンクシャフト6の回転時に抵抗となるバランスウェイト
9の凹凸部をなくすことができ回転時の抵抗低減とな
り、横型圧縮機の場合には油溜の油の攪拌を防止でき、
さらにリブ20の付いたクランクシャフト6の外周軸6
aの加工をブローチなどの総形工具で行うことが出来る
ので加工費が安くなり、安価で効率が良く信頼性の高い
密閉型圧縮機を提供することが出来る。
According to this configuration, foreign matter can be separated from the oil that lubricates the compression mechanism while passing through the shaft hole 7 of the crankshaft 6, and foreign matter can be prevented from entering the lubricating part. The unevenness of the balance weight 9 which sometimes becomes a resistance can be eliminated, and the resistance at the time of rotation can be reduced. In the case of a horizontal compressor, the oil in the oil sump can be prevented from being agitated.
Further, the outer peripheral shaft 6 of the crankshaft 6 with the rib 20
Since the processing of (a) can be performed with a forming tool such as a broach, the processing cost can be reduced, and an inexpensive, efficient, and highly reliable hermetic compressor can be provided.

【0026】[0026]

【発明の効果】上記実施例から明らかなように、請求項
1に記載の発明は、密閉容器の内部に電動機と、この電
動機の駆動力をクランクシャフトを介して伝達される圧
縮機構部とを有し、前期クランクシャフトを磁性材料と
し、その永久磁石の高さより低い軸方向のリブを配設し
たクランクシャフトの最大外形より大きい回転軸外周面
に直接永久磁石を取り付け、前記永久磁石の外周面に円
筒管を嵌入させることにより、ケイ素鋼板等の高価な材
料を使用しなくても、磁気損失により効率を損なうこと
なく、ブローチなどの総形工具で加工しやすく安価なク
ランクシャフトと一体の回転子が提供でき、安価な密閉
型圧縮機を提供できる。
As is apparent from the above embodiment, the first aspect of the present invention comprises an electric motor and a compression mechanism for transmitting the driving force of the electric motor via a crankshaft inside the closed container. The permanent magnet is attached directly to the outer peripheral surface of the rotating shaft which is larger than the maximum outer shape of the crankshaft in which the crankshaft is made of a magnetic material and the axial ribs lower than the height of the permanent magnet are provided. By inserting a cylindrical tube into the cylinder, it is easy to machine with a broach or other forming tool without losing efficiency due to magnetic loss without using expensive materials such as silicon steel plate. And an inexpensive hermetic compressor can be provided.

【0027】請求項2に記載の発明は、密閉容器の内部
に電動機と、この電動機の駆動力をクランクシャフトを
介して伝達される圧縮機構部とを有し、前記クランクシ
ャフトの回転軸外周面の一部にバランスウェイト部を形
成する凹部を設け、前記クランクシャフトを磁性材料と
し、その回転軸外周面は永久磁石の高さより低いリブを
軸方向に配設され、前記永久磁石が取り付けられる面の
最大外形はクランクシャフトの最大外形より大きく構成
され、直接前記永久磁石を取り付け、前記永久磁石の外
周面に円筒管を嵌入させることにより、回転時に抵抗と
なる凹凸部をなくすことができ、回転時の抵抗低減とな
ったり、横型圧縮機の場合には、油溜の油の攪拌を防止
できるので、密閉容器内の油量、油面レベルを常に安定
した状態に保つことができ、圧縮機の信頼性が確保で
き、さらに、クランクシャフトの加工をブローチなどの
総形工具で行うことが出来るため安価に製作することが
出来、高性能・高品質で安価な密閉型圧縮機を提供でき
る。
According to a second aspect of the present invention, an electric motor and a compression mechanism for transmitting the driving force of the electric motor via a crankshaft are provided inside the closed container, and the outer peripheral surface of the rotary shaft of the crankshaft is provided. A concave portion forming a balance weight portion is provided in a part of the surface of the crankshaft, and the crankshaft is made of a magnetic material. The outer peripheral surface of the rotating shaft is provided with ribs lower than the height of the permanent magnet in the axial direction, and the surface to which the permanent magnet is attached. The maximum outer shape of the crankshaft is configured to be larger than the maximum outer shape of the crankshaft, and by directly attaching the permanent magnet and fitting a cylindrical tube into the outer peripheral surface of the permanent magnet, it is possible to eliminate uneven portions that become a resistance at the time of rotation. In the case of a horizontal compressor, oil in the oil sump can be prevented from being agitated. And the reliability of the compressor can be secured, and the crankshaft can be machined with a full-form tool such as a broach. Machine can be provided.

【0028】請求項3に記載の発明は、密閉容器の内部
に電動機と、この電動機の駆動力をクランクシャフトを
介して伝達される圧縮機構部とを有し、前記クランクシ
ャフトの反圧縮機構部側端部にオイルポンプを連結し、
前記クランクシャフトに、回転軸方向に貫通する軸心孔
と、前記軸心孔と連通し前記クランクシャフトの回転軸
外周面の一部に設けた凹部に開放する連通孔とを形成
し、前記クランクシャフトを磁性材料とし、その回転軸
外周面は永久磁石の高さより低いリブを軸方向に配設さ
れ、前記永久磁石が取り付けられる面の最大外形はクラ
ンクシャフトの最大外形より大きく構成され、その回転
軸外周面に直接永久磁石を取り付け、前記永久磁石の外
周面に円筒管を嵌入させることにより、圧縮機構部を潤
滑する油から異物を、回転軸の軸心孔を通る間に分離で
き、潤滑部への異物の進入を防止でき、さらに、クラン
クシャフトの加工をブローチなどの総形工具で行うこと
が出来るため安価に製作することが出来るため、高性能
・高品質・高信頼性で安価な密閉型圧縮機を提供でき
る。
According to a third aspect of the present invention, an electric motor and a compression mechanism for transmitting a driving force of the electric motor via a crankshaft are provided inside the closed container, and the anti-compression mechanism of the crankshaft is provided. Connect the oil pump to the side end,
The crankshaft is formed with an axial hole penetrating in the direction of the rotational axis, and a communication hole communicating with the axial hole and opening to a recess provided in a part of the outer peripheral surface of the rotational shaft of the crankshaft. The shaft is made of a magnetic material, and the outer peripheral surface of the rotation shaft is provided with ribs lower than the height of the permanent magnet in the axial direction. The maximum outer shape of the surface on which the permanent magnet is mounted is larger than the maximum outer shape of the crankshaft. By attaching a permanent magnet directly to the outer peripheral surface of the shaft and fitting a cylindrical tube into the outer peripheral surface of the permanent magnet, foreign matter can be separated from the oil that lubricates the compression mechanism while passing through the shaft hole of the rotating shaft. Intrusion of foreign matter into the part can be prevented, and since the crankshaft can be machined with a full-form tool such as a broach, it can be manufactured at low cost, resulting in high performance, high quality, and high reliability. It can provide an inexpensive hermetic compressor.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例を示す密閉型圧縮機の断面図FIG. 1 is a sectional view of a hermetic compressor showing one embodiment of the present invention.

【図2】本発明の一実施例を示す密閉型圧縮機の断面図FIG. 2 is a sectional view of a hermetic compressor showing one embodiment of the present invention.

【図3】本発明の一実施例を示す密閉型圧縮機の断面図FIG. 3 is a sectional view of a hermetic compressor showing one embodiment of the present invention.

【図4】同従来例を示す密閉型圧縮機の断面図FIG. 4 is a cross-sectional view of the hermetic compressor showing the conventional example.

【符号の説明】[Explanation of symbols]

1 密閉容器 2 圧縮機構 3 固定子 4 油溜 5 円筒管 6 クランクシャフト 6a 外周軸 6b 永久磁石 6e 回転子 6f 凹部 6h 凹部 6i 連通孔 7 軸芯孔 8 オイルポンプ 8a スクリーン 9 バランスウェイト 10 カバー 20 リブ DESCRIPTION OF SYMBOLS 1 Closed container 2 Compression mechanism 3 Stator 4 Oil reservoir 5 Cylindrical tube 6 Crankshaft 6a Outer axis 6b Permanent magnet 6e Rotor 6f Depression 6h Depression 6i Communication hole 7 Shaft core hole 8 Oil pump 8a Screen 9 Balance weight 10 Cover 20 Rib

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI H02K 7/075 H02K 7/075 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI H02K 7/075 H02K 7/075

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】密閉容器の内部に電動機と、この電動機の
駆動力をクランクシャフトを介して伝達される圧縮機構
部とを有し、前記クランクシャフトを磁性材料とし、そ
の回転軸外周面に直接永久磁石を取り付けさらに前記永
久磁石の高さより低い軸方向に伸びる複数のリブを設
け、前記永久磁石の外周面に円筒管を嵌入させ、前記電
動機回転子とし、前記回転軸外周面の外径を前記クラン
クシャフトの最大外径より大きくした密閉型圧縮機。
An electric motor and a compression mechanism for transmitting the driving force of the electric motor via a crankshaft are provided inside the closed container, and the crankshaft is made of a magnetic material, and is directly attached to the outer peripheral surface of the rotating shaft. Attach a permanent magnet and further provide a plurality of ribs extending in the axial direction lower than the height of the permanent magnet, fit a cylindrical tube on the outer peripheral surface of the permanent magnet, the motor rotor, the outer diameter of the outer peripheral surface of the rotating shaft A hermetic compressor having a diameter larger than a maximum outer diameter of the crankshaft.
【請求項2】密閉容器の内部に電動機と、この電動機の
駆動力をクランクシャフトを介して伝達される圧縮機構
部とを有し、前記クランクシャフトを磁性材料とし、そ
の回転軸外周面の一部にバランスウェイト部を形成する
凹部を設け、前記回転軸外周面に直接永久磁石を取り付
けさらに前記回転軸外周部に前記永久磁石の高さよりも
低い軸方向に伸びる複数のリブを設け、前記永久磁石の
外周面に円筒管を嵌入させ、前記電動機回転子とし、前
記回転軸外周面の外径を前記クランクシャフトの最大外
径より大きくした密閉型圧縮機。
2. An electric motor and a compression mechanism for transmitting the driving force of the electric motor via a crankshaft inside the closed container, wherein the crankshaft is made of a magnetic material, and one of the outer peripheral surfaces of the rotating shaft is provided. A concave portion forming a balance weight portion is provided in the portion, a permanent magnet is directly attached to the outer peripheral surface of the rotating shaft, and a plurality of ribs extending in an axial direction lower than the height of the permanent magnet are provided on the outer peripheral portion of the rotating shaft, and the permanent magnet is provided. A hermetic compressor in which a cylindrical tube is fitted on an outer peripheral surface of a magnet to be the electric motor rotor, and an outer diameter of an outer peripheral surface of the rotating shaft is larger than a maximum outer diameter of the crankshaft.
【請求項3】密閉容器の内部に電動機と、この電動機の
駆動力をクランクシャフトを介して伝達される圧縮機構
部とを有し、前記クランクシャフトを磁性材料とし、前
記クランクシャフトの反圧縮機構部側端部にオイルポン
プを連結し、前記クランクシャフトに、回転軸方向に貫
通する軸心孔と、前記軸心孔と連通し前記クランクシャ
フトの回転軸外周面の一部に設けた凹部に開放する連通
孔とを形成し、さらに回転軸外周面の一部にバランスウ
ェイト部を形成する凹部と前記回転軸外周面に直接取り
付けられた永久磁石の高さよりも低い軸方向に伸びる複
数のリブを設け、前記永久磁石の外周面に円筒管を嵌入
させ、前記電動機回転子とし、前記回転軸外周面の外径
を前記クランクシャフトの最大外径より大きくした密閉
型圧縮機。
And a compression mechanism for transmitting a driving force of the motor via a crankshaft, wherein the crankshaft is made of a magnetic material, and the crankshaft has an anti-compression mechanism. An oil pump is connected to the part side end, and the crankshaft has a shaft hole penetrating in the direction of the rotation axis, and a recess provided in a part of the rotation shaft outer peripheral surface of the crankshaft which communicates with the shaft hole. A plurality of ribs forming an open communication hole, forming a balance weight portion on a part of the outer peripheral surface of the rotating shaft, and extending in an axial direction lower than the height of a permanent magnet directly attached to the outer peripheral surface of the rotating shaft; A hermetic compressor in which a cylindrical tube is fitted into the outer peripheral surface of the permanent magnet to form the motor rotor, and the outer diameter of the outer peripheral surface of the rotating shaft is larger than the maximum outer diameter of the crankshaft.
JP9173438A 1997-06-30 1997-06-30 Hermetic compressor Pending JPH1122683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9173438A JPH1122683A (en) 1997-06-30 1997-06-30 Hermetic compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9173438A JPH1122683A (en) 1997-06-30 1997-06-30 Hermetic compressor

Publications (1)

Publication Number Publication Date
JPH1122683A true JPH1122683A (en) 1999-01-26

Family

ID=15960481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9173438A Pending JPH1122683A (en) 1997-06-30 1997-06-30 Hermetic compressor

Country Status (1)

Country Link
JP (1) JPH1122683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593806A (en) * 2016-12-21 2017-04-26 兰州兰石石油装备工程股份有限公司 Permanent magnet motor totally directly driven crank connecting rod reciprocating pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593806A (en) * 2016-12-21 2017-04-26 兰州兰石石油装备工程股份有限公司 Permanent magnet motor totally directly driven crank connecting rod reciprocating pump

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