JPH09131001A - Sealed compressor - Google Patents
Sealed compressorInfo
- Publication number
- JPH09131001A JPH09131001A JP7282111A JP28211195A JPH09131001A JP H09131001 A JPH09131001 A JP H09131001A JP 7282111 A JP7282111 A JP 7282111A JP 28211195 A JP28211195 A JP 28211195A JP H09131001 A JPH09131001 A JP H09131001A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- bolt
- bolt hole
- outer diameter
- hermetic compressor
- 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
Links
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 239000011800 void material Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、冷凍空調装置など
に用いられる密閉形圧縮機に係り、特に、電動機の固定
子にボルト穴を設け、このボルト穴を通したボルトを締
め付けることにより、この固定子を圧縮機構部に固定す
るようにした密閉形圧縮機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor used in a refrigerating and air-conditioning system, and more particularly, by providing a stator of an electric motor with a bolt hole and tightening the bolt passing through the bolt hole. The present invention relates to a hermetic compressor in which a stator is fixed to a compression mechanism section.
【０００２】[0002]
【従来の技術】図５は冷凍空調装置などに用いられる密
閉形圧縮機の中でも代表的な方式であるレシプロ方式の
密閉形圧縮機を示す縦断面図であって、１は密閉容器、
２は電動機、２１は固定子、２２は回転子、２１１はボ
ルト穴、３は圧縮機構部、３１はクランク軸、４は支持
部材、５はバネ、６’はボルトである。2. Description of the Related Art FIG. 5 is a vertical sectional view showing a reciprocating type hermetic compressor, which is a typical hermetic compressor used in a refrigerating and air-conditioning system.
2 is an electric motor, 21 is a stator, 22 is a rotor, 211 is a bolt hole, 3 is a compression mechanism portion, 31 is a crankshaft, 4 is a support member, 5 is a spring, and 6'is a bolt.
【０００３】同図において、密閉容器１内に電動機２と
圧縮機構部３が収納されており、これら電動機２と圧縮
機構部３とで形成される圧縮機本体は、密閉容器１の内
壁に設けられた支持部材４にバネ５を介して支持されて
いる。一方、電動機２の固定子２１は、この固定子２１
に設けられたボルト穴２１１を介して、ボルト６’によ
り圧縮機構部３に締付け固定されている。一般的に、か
かるボルト６´によって３〜４個所程度で締付けが行な
われている。電動機２で発生する回転駆動力は、クラン
ク軸３１により圧縮機構部３に伝達される。In FIG. 1, an electric motor 2 and a compression mechanism portion 3 are housed in a closed container 1, and a compressor body formed by the electric motor 2 and the compression mechanism portion 3 is provided on the inner wall of the closed container 1. It is supported by the supported support member 4 via a spring 5. On the other hand, the stator 21 of the electric motor 2 is
It is fastened and fixed to the compression mechanism section 3 by a bolt 6'through a bolt hole 211 provided in the. Generally, the bolt 6'is used to tighten at about 3 to 4 places. The rotary driving force generated by the electric motor 2 is transmitted to the compression mechanism section 3 by the crankshaft 31.
【０００４】ここで、ボルト６´には、その先端部にね
じ部が設けられ、このねじ部とボルト６´の頭部との間
の部分の外径はねじ部の外径とはほぼ等しくなってい
る。また、固定子２１に設けられたボルト穴２１１の内
径はボルト６´の外径よりもかなり大きく設定されてい
る。以上のことにより、固定子２１の３〜４個所に設け
られたボルト穴２１１と圧縮機構部３〜４個所に設けら
れたボルト６´のねじ部が螺合されるねじ穴（図示せ
ず）との位置関係に若干のバラツキがあっても、夫々の
ボルト穴２１１にねじ穴を容易に合わせることができ、
圧縮機構部３への固定子２１の取付作業が容易になるよ
うにしている。Here, the bolt 6'is provided with a threaded portion at its tip, and the outer diameter of the portion between this threaded portion and the head of the bolt 6'is substantially equal to the outer diameter of the threaded portion. Has become. The inner diameter of the bolt hole 211 provided in the stator 21 is set to be considerably larger than the outer diameter of the bolt 6 '. As a result of the above, the screw holes (not shown) into which the bolt holes 211 provided at the three to four places of the stator 21 and the screw portions of the bolts 6'provided at the three to four compression mechanism portions are screwed together. Even if there is some variation in the positional relationship with, the screw holes can be easily fitted to the respective bolt holes 211,
The work of attaching the stator 21 to the compression mechanism 3 is facilitated.
【０００５】このような構造の密閉形圧縮機は非常に一
般的に用いられており、最近の例では、特開平４−５４
８６号公報，特開平４−１８７８７４号公報あるいは特
公平５ー１０８９９号公報など多数の文献に挙げられて
いる。A hermetic compressor having such a structure is very commonly used, and in a recent example, it is disclosed in Japanese Patent Laid-Open No. 4-54.
No. 86, Japanese Patent Laid-Open No. 4-187874 or Japanese Patent Publication No. 5-10899.
【０００６】[0006]
【発明が解決しようとする課題】上記のような構造の密
閉形圧縮機においては、電動機２の固定子２１と回転子
２２との間の隙間寸法が均一に確保されるのが理想的で
あるが、実際の使用条件においては、圧縮機の製造やこ
の圧縮機を搭載した製品が運搬中などで衝撃を受けるた
場合、例えば、図６（ａ）あるいは同図（ｂ）に示すよ
うに、固定子２１が変形し、これと回転子２２との間の
隙間寸法が均一に保たれなくなる可能性がある。これ
は、一般的に、固定子２１が鋼板を積層された構造とな
っており、また、ボルト６´の外径がボルト穴２１１の
内径よりも小さく、このボルト６´の外面とボルト穴２
１１の内面との間にかなりのスペースがあるために、概
念的には、固定子２１の鋼板が揃っている図７（ａ）に
示す状態が、衝撃などにより、図７（ｂ）に示すよう
に、積層板にすべりが生じて固定子２１が変形するよう
な事態が生ずる場合もあった。In the hermetic compressor having the above-mentioned structure, it is ideal that the size of the gap between the stator 21 and the rotor 22 of the electric motor 2 is secured uniformly. However, under actual usage conditions, when a compressor is manufactured or a product equipped with this compressor is shocked during transportation, for example, as shown in FIG. 6 (a) or FIG. 6 (b), There is a possibility that the stator 21 may be deformed and the gap between the stator 21 and the rotor 22 may not be kept uniform. This generally has a structure in which the stator 21 is formed by laminating steel plates, and the outer diameter of the bolt 6'is smaller than the inner diameter of the bolt hole 211, so that the outer surface of the bolt 6'and the bolt hole 2
Since there is a considerable space between the inner surface of the stator 11 and the inner surface of the stator 11, the state shown in FIG. 7A in which the steel plates of the stator 21 are aligned is conceptually shown in FIG. 7B due to impact or the like. As described above, slippage may occur in the laminated plate and the stator 21 may be deformed.
【０００７】このような電動機２の固定子２１の変形が
生ずると、この固定子２１と回転子２２の間の隙間寸法
が一部分で狭まることになり、この結果、固定子２１と
回転子２２との間で発生する磁気吸引力が増加して、次
のような問題が起こる可能性がある。When the stator 21 of the electric motor 2 is deformed as described above, the size of the gap between the stator 21 and the rotor 22 is partially narrowed. As a result, the stator 21 and the rotor 22 are separated from each other. The magnetic attraction force generated between the two may increase, and the following problems may occur.
【０００８】（１）上記間隔寸法がある値よりも小さく
なると、電磁音が発生する。(1) When the distance dimension becomes smaller than a certain value, electromagnetic noise is generated.
【０００９】（２）クランク軸３１の電動機２側の端部
は支持されずにフリーであるので、固定子２１のこの磁
気吸引力の増加した部分に回転子２２が引き寄せられ、
この分クランク軸３１が軸受部に対して傾いた状態で回
転することになり、このために、クランク軸３１の先端
の振れ回りが増加して軸受部が片当たり状態となり、軸
受部のその部分に潤滑油が供給されにくくなって異常摩
耗が発生する。(2) Since the end of the crankshaft 31 on the electric motor 2 side is not supported and is free, the rotor 22 is attracted to the portion of the stator 21 where the magnetic attraction force is increased,
As a result, the crankshaft 31 rotates in a state of being inclined with respect to the bearing portion. Therefore, whirling of the tip of the crankshaft 31 increases, the bearing portion comes into a one-sided contact state, and that portion of the bearing portion It becomes difficult to supply lubricating oil to the and abnormal wear occurs.
【００１０】（３）電動機２の固定子２１の上記変形が
さらに極端な場合には、固定子２１と回転子２２との間
の隙間寸法が０となり、これら固定子２１，回転子２２
間で接触を起こす。(3) When the above-mentioned deformation of the stator 21 of the electric motor 2 is more extreme, the size of the gap between the stator 21 and the rotor 22 becomes 0, and the stator 21 and the rotor 22 are
Make contact between.
【００１１】磁気吸引力の大きさは、例えば、次式のよ
うな評価ができる。 Ｆ ∝ Ｄｒ・Ｌｒ・Ｂｇ2／ｇ ・・・・・・・・（１） ここで、 Ｆ：磁気吸引力 Ｄｒ：回転子外径 Ｌｒ：回転子積厚 Ｂｇ：磁束密度 ｇ：固定子と回転子との間の隙間 である。The magnitude of the magnetic attraction force can be evaluated, for example, by the following equation. F ∝ Dr.Lr.Bg 2 / g (1) where F: magnetic attraction force Dr: rotor outer diameter Lr: rotor product thickness Bg: magnetic flux density g: stator It is the gap between the rotor and the rotor.
【００１２】（１）式から明らかなように、電動機の大
型化（即ち、回転子外径Ｄｒあるいは積厚Ｌｒの拡大）
にともなって磁気吸引力は増大する方向に変化し、従っ
て、上記隙間寸法ｇを所定の値に一様に確保することが
重要な課題となってくる。As is clear from the equation (1), the electric motor is enlarged (that is, the rotor outer diameter Dr or the product thickness Lr is increased).
As a result, the magnetic attraction force changes in an increasing direction. Therefore, it is an important issue to uniformly secure the gap size g at a predetermined value.
【００１３】本発明の目的は、かかる問題を解消し、電
動機の固定子と回転子との間の隙間寸法を一定に保ち、
異常な騒音を防止して信頼性を高めることができるよう
にした密閉形圧縮機を提供することにある。An object of the present invention is to solve such a problem and to keep the gap size between the stator and the rotor of the electric motor constant.
It is an object of the present invention to provide a hermetic compressor capable of preventing abnormal noise and improving reliability.
【００１４】[0014]
【課題を解決するための手段】上記問題を解決するため
に、本発明は、電動機の固定子に形成されているボルト
穴の内径とこれに差し込まれたボルトの外径とによって
形成される空間内に、このボルトのねじ部の外径とこの
ボルト穴の内径とによって形成される空隙寸法よりも小
なる空隙寸法を形成する手段を設けた。In order to solve the above problems, the present invention provides a space formed by an inner diameter of a bolt hole formed in a stator of an electric motor and an outer diameter of a bolt inserted therein. A means for forming a void size smaller than the void size formed by the outer diameter of the threaded portion of the bolt and the inner diameter of the bolt hole is provided therein.
【００１５】かかる手段を設けることにより、衝撃など
による固定子の変形量が制限され、これら固定子と回転
子との間の隙間寸法をほぼ均一に保つことができるの
で、前述した磁気吸引力の増加による種々の問題を防止
することができる。By providing such means, the amount of deformation of the stator due to impact or the like is limited, and the size of the gap between the stator and the rotor can be kept substantially uniform. Various problems due to the increase can be prevented.
【００１６】[0016]
【発明の実施の形態】以下、本発明の実施形態を図面を
用いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１は本発明による密閉形圧縮機の一実施
形態を示す縦断面図であって、６はボルトであり、図５
に対応する部分には同一符号を付けて重複する説明を省
略する。FIG. 1 is a vertical sectional view showing an embodiment of the hermetic compressor according to the present invention, in which 6 is a bolt, and FIG.
The same reference numerals are given to the portions corresponding to and the duplicate description will be omitted.
【００１８】同図において、ボルト穴２１１は、先の従
来技術と同様に、ボルト６のねじ部が螺合する圧縮機構
部３のねじ穴よりも大径とする。そして、ボルト６とし
ては、その頭部とねじ部との間の部分をねじ部の外径よ
り大径とし、これにより、電動機２の固定子２１のボル
ト穴２１１とこのボルト６との間の空隙寸法が充分小さ
くなるようにしている。In the figure, the bolt hole 211 has a larger diameter than the screw hole of the compression mechanism portion 3 into which the screw portion of the bolt 6 is screwed, as in the prior art. The portion of the bolt 6 between the head portion and the screw portion has a larger diameter than the outer diameter of the screw portion, so that the portion between the bolt hole 211 of the stator 21 of the electric motor 2 and the bolt 6 can be formed. The size of the void is made small enough.
【００１９】かかる小さい空隙寸法を設ける手段として
は、ねじ部を含めたボルト６全長にわたって径を大きく
することも考えられるが、ボルト６の所要の締結力を得
るためのトルクが増大化して生産性が低下するし、ボル
ト６をボルト穴２１１に投入する際の作業性が低下する
ことなどにより、好ましいことではない。これに対し、
ボルト６のねじ部の外径が頭部とねじ部との間の部分の
外径よりも小さくする方が有利であると考えられる。As a means for providing such a small gap size, it is conceivable to increase the diameter over the entire length of the bolt 6 including the threaded portion, but the torque for obtaining the required fastening force of the bolt 6 is increased and the productivity is increased. And the workability when inserting the bolt 6 into the bolt hole 211 are reduced, which is not preferable. In contrast,
It is considered advantageous to make the outer diameter of the threaded portion of the bolt 6 smaller than the outer diameter of the portion between the head and the threaded portion.
【００２０】そこで、この実施形態においては、図２
（ａ）にさらに詳細に示すように、ボルト６のねじ部の
外径ＤBよりもこのねじ部と頭部との間の部分の外径Ｄ1
を大とし、しかも、この外径Ｄ1を固定子２１に設けら
れたボルト穴２１１の内径Ｄ０（図２（ｂ））とほとん
ど等しくする。これにより、ボルト６をボルト穴２１１
に挿入したときには、このボルト穴２１１がボルト６に
よってほとんど塞がれ、ボルト穴２１１の内面とボルト
６のねじ部，頭部間の部分の外面との間にほとんどスペ
ースがないようにしている。Therefore, in this embodiment, as shown in FIG.
Further, as shown in detail (a), the outer diameter of the portion between the well and the threaded portion and the head than the outer diameter D B of the threaded portion of the bolt 6 D 1
And the outer diameter D 1 is made substantially equal to the inner diameter D 0 (FIG. 2B) of the bolt hole 211 provided in the stator 21. As a result, the bolt 6 is inserted into the bolt hole 211
When it is inserted into the bolt hole 211, the bolt hole 211 is almost closed by the bolt 6 so that there is almost no space between the inner surface of the bolt hole 211 and the outer surface of the portion between the screw portion and the head of the bolt 6.
【００２１】また、ボルト６の大なる外径Ｄ1の部分の
長さＬ1（図２（ａ））は、ボルト穴２１１の長さ、即
ち、固定子２１の積厚Ｌｓの１／２以上に設定する。The length L 1 (FIG. 2A) of the portion of the bolt 6 having the large outer diameter D 1 is 1/2 of the length of the bolt hole 211, that is, the product thickness Ls of the stator 21. Set above.
【００２２】以上のことからして、ボルト６の外径Ｄ1
の部分により、ボルト穴２１１が下端から少なくとも固
定子２１の重心部分までは埋め付くされることになる。
衝撃などによって固定子２１が上記のような変形を受け
やすいのは、固定子２１の重心（その厚み方向の中心）
から下側の固定子２１の固定部分から離れた部分であ
り、少なくともこの部分でボルト穴２１１を剛体のボル
ト６で塞ぐことより、固定子２１に衝撃が加わっても、
その変形を防ぐことができる。そして、これにより、特
に、磁気吸引力の影響を受けやすい範囲、即ち、固定子
２１の軸受部から離れた部分と回転子２２との間の隙間
寸法をも所望に確保することができる。From the above, the outer diameter D 1 of the bolt 6
By the portion, the bolt hole 211 is filled up from the lower end to at least the center of gravity of the stator 21.
It is the center of gravity of the stator 21 (the center in the thickness direction) that the stator 21 is susceptible to the above deformation due to impact or the like.
Is a portion away from the fixed portion of the stator 21 on the lower side, and by closing the bolt hole 211 with the rigid bolt 6 at least in this portion, even if an impact is applied to the stator 21,
The deformation can be prevented. This makes it possible to secure a desired range, in particular, a range that is easily affected by the magnetic attraction force, that is, a gap size between the rotor 22 and a portion of the stator 21 that is separated from the bearing portion.
【００２３】なお、ボルト６のねじ部，頭部間の部分の
外径がボルト穴２１１の内径とほとんど等しくしている
ので、図５に示した従来の技術に比べ、固定子２１を圧
縮機構部３にボルト締めする際に、ボルト６のねじ部を
ねじ穴に簡単にねじ込めるかどうかなどの若干の問題が
生ずるが、これは、固定子２１での３〜４個所のボルト
穴２１１と圧縮機構部３での３〜４個所のねじ穴との位
置関係の設定精度高めることによって解消できるし、ま
た、かかる精度を高めることについては、さほど困難な
ことではない。Since the outer diameter of the portion between the screw portion and the head portion of the bolt 6 is almost equal to the inner diameter of the bolt hole 211, the stator 21 is compressed by a compression mechanism as compared with the conventional technique shown in FIG. When bolting to the portion 3, some problems such as whether or not the threaded portion of the bolt 6 can be easily screwed into the threaded hole occur. This is because the stator 21 has three or four bolt holes 211. This can be solved by increasing the setting accuracy of the positional relationship with the 3 to 4 screw holes in the compression mechanism section 3, and it is not so difficult to improve such accuracy.
【００２４】また、この実施形態においても、図５に示
した従来の技術と同様、ボルト穴２１１の内径は圧縮機
構部３に設けられたねじ穴の径よりもかなり大きくして
いるので、かかるボルト穴２１１とねじ穴との位置合わ
せは容易である。Also in this embodiment, as in the prior art shown in FIG. 5, the inner diameter of the bolt hole 211 is made considerably larger than the diameter of the screw hole provided in the compression mechanism section 3, so that it takes such a structure. Positioning of the bolt hole 211 and the screw hole is easy.
【００２５】図３は本発明による密閉形圧縮機の他の実
施形態の要部を示す部分縦断面図であって、６’は図５
と同様のボルト、７は略円筒状部材であり、前出図面に
対応する部分には同一符号を付けて重複する説明を省略
する。FIG. 3 is a partial vertical cross-sectional view showing an essential part of another embodiment of the hermetic compressor according to the present invention, and 6'is FIG.
The same bolts 7 are substantially cylindrical members, and the portions corresponding to those in the above drawings are designated by the same reference numerals to omit redundant description.
【００２６】同図において、この実施形態においては、
図５に示した従来技術と同様に、ボルト６のねじ部の外
径とこのねじ部，頭部間の外径とを互いに等しくし、か
つ、これら外径を固定子２１に設けられたボルト穴２１
１の内径よりも小さくしたものである。この場合、ボル
ト穴２１１の内面とこれに挿入されてボルト６との間に
かなりの隙間が生ずるが、この隙間を埋めてこの隙間寸
法を充分小さくするための、ボルト穴２１１内に略円筒
形部材７を嵌め込まれる。In this figure, in this embodiment,
As in the prior art shown in FIG. 5, the outer diameter of the threaded portion of the bolt 6 is made equal to the outer diameter between the threaded portion and the head, and these outer diameters are provided on the stator 21. Hole 21
It is smaller than the inner diameter of 1. In this case, a considerable gap is created between the inner surface of the bolt hole 211 and the bolt 6 inserted into the bolt hole 211. However, a substantially cylindrical shape is formed in the bolt hole 211 in order to fill the gap and sufficiently reduce the size of the gap. The member 7 is fitted.
【００２７】略円筒形部材７は、図４に示すように、略
Ｃ字形の横断面形状をなした筒状の部材であって、ステ
ンレス鋼のようなばね性を有する材料で形成されてい
る。この略円筒部材７は、その径が縮められるようにし
て、固定子２１のボルト穴２１１にそこから飛び出さな
いように押し込まれる。これにより、略円筒部材７はこ
のボルト穴２１１の内面に弾性的に接触した状態で取り
付けられることになり、固定子２１の積層板のすべりに
よる変形を防止することができる。As shown in FIG. 4, the substantially cylindrical member 7 is a tubular member having a substantially C-shaped cross section, and is made of a material having a spring property such as stainless steel. . The substantially cylindrical member 7 is pressed into the bolt hole 211 of the stator 21 so as not to jump out of the bolt hole 211 so that its diameter is reduced. As a result, the substantially cylindrical member 7 is attached while being in elastic contact with the inner surface of the bolt hole 211, and deformation of the stator 21 due to slippage of the laminated plate can be prevented.
【００２８】この略円筒部材７の全長Ｌ2は固定子２１
の積厚Ｌｓ（図２（ｂ））の１／２以上に設定してお
り、この略円筒部材７はボルト穴２１１の下端から少な
くとも固定子２１の重心位置までに嵌め込まれる。The total length L 2 of the substantially cylindrical member 7 is the stator 21.
Is set to 1/2 or more of the stacking thickness Ls (FIG. 2B), and the substantially cylindrical member 7 is fitted from the lower end of the bolt hole 211 to at least the center of gravity of the stator 21.
【００２９】この略円筒部材７が嵌め込まれたボルト穴
２１１にボルト６を挿入して固定子２１を圧縮機構部３
にボルト締めしたとき、このボルト穴２１１の下端から
少なくとも固定子２１の重心位置の部分までがこれらボ
ルト６と略円筒部材７によって埋め付くされ、図１に示
した実施形態と同様に、固定子２１に衝撃が加わって
も、その変形を防ぐことができ、特に、磁気吸引力の影
響を受けやすい範囲、即ち、固定子２１の軸受部から離
れた部分と回転子２２との間の隙間寸法をも所望に確保
することができる。The bolt 6 is inserted into the bolt hole 211 in which the substantially cylindrical member 7 is fitted, and the stator 21 is compressed by the compression mechanism portion 3.
When bolted to, the bolt 6 and the substantially cylindrical member 7 fill up from the lower end of the bolt hole 211 to at least the position of the center of gravity of the stator 21, and as in the embodiment shown in FIG. Even when an impact is applied to the rotor 21, the deformation thereof can be prevented, and in particular, the range that is easily affected by the magnetic attraction force, that is, the size of the gap between the rotor 22 and the portion of the stator 21 away from the bearing portion. Can be secured as desired.
【００３０】この実施形態は、基本構成としては、図５
に示した従来の技術と同様であり、ボルト穴２１１に上
記の略円筒部材７を設けるという簡単な手段でもって、
上記のような優れた効果が得られるのである。This embodiment has the basic configuration shown in FIG.
In the same manner as the conventional technique shown in FIG. 1, by the simple means of providing the above-mentioned substantially cylindrical member 7 in the bolt hole 211,
The excellent effects as described above can be obtained.
【００３１】[0031]
【発明の効果】以上説明したように、本発明によれば、
電動機の固定子の変形による該固定子と回転子との間の
空隙寸法の縮小により発生する磁気吸引力に起因した諸
問題、即ち、電磁音や軸受部の片当たりによる以上摩耗
あるいは固定子と回転子の接触などを防止でき、信頼性
の高い密閉形圧縮機を提供することができる。As described above, according to the present invention,
Various problems caused by the magnetic attraction force generated by the reduction of the gap size between the stator and the rotor due to the deformation of the stator of the electric motor, that is, the above-mentioned wear due to electromagnetic noise or one-sided contact of the bearing or the stator. It is possible to prevent contact of the rotor and the like and provide a highly reliable hermetic compressor.
【図１】本発明による密閉形圧縮機の一実施形態を示す
縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of a hermetic compressor according to the present invention.
【図２】図１に示した第１の実施形態でのボルトと電動
機の固定子に設けられたボルト穴との関係の一具体例を
示す説明図である。FIG. 2 is an explanatory diagram showing a specific example of the relationship between the bolt and the bolt hole provided in the stator of the electric motor in the first embodiment shown in FIG.
【図３】本発明による密閉形圧縮機の他の実施形態の要
部を示す部分縦断面図である。FIG. 3 is a partial vertical cross-sectional view showing a main part of another embodiment of the hermetic compressor according to the present invention.
【図４】図３における略円筒形部材の一具体例を示す斜
視図である。FIG. 4 is a perspective view showing a specific example of the substantially cylindrical member in FIG.
【図５】従来の密閉形圧縮機の一例を示す縦断面図であ
る。FIG. 5 is a vertical cross-sectional view showing an example of a conventional hermetic compressor.
【図６】図５に示した従来の密閉形圧縮機での電動機固
定子の変形状態を示す概念図である。6 is a conceptual diagram showing a deformed state of a motor stator in the conventional hermetic compressor shown in FIG.
【図７】図６に示した変形状態をさらに詳細に示した概
念図である。FIG. 7 is a conceptual diagram showing the deformed state shown in FIG. 6 in more detail.
１ 密閉容器 ２ 電動機 ２１ 固定子 ２１１ ボルト穴 ２２ 電動機回転子 ３ 圧縮機構部 ３１ クランク軸 ４ 支持部材 ５ バネ ６ ボルト ７ 略円筒形部材 1 Airtight Container 2 Electric Motor 21 Stator 211 Bolt Hole 22 Electric Motor Rotor 3 Compression Mechanism Part 31 Crankshaft 4 Support Member 5 Spring 6 Bolt 7 Substantially Cylindrical Member
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長里 勝美 栃木県下都賀郡大平町大字富田800番地 株式会社日立製作所冷熱事業部内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Katsumi Nagasato 800, Tomita, Odaira, Shimotsuga-gun, Tochigi Pref.Hitachi, Ltd.
Claims (6)
される圧縮機本体を収納し、該電動機の固定子が、該固
定子に設けられたボルト穴を介してボルト締めにより、
該圧縮機構部に固定される構造をなす密閉形圧縮機にお
いて、 該ボルト穴の内径と該ボルトの外径によって形成される
空間内に、該ボルトのねじ部の外径と該ボルト穴の内径
によって形成される空隙寸法よりも小なる空隙寸法を形
成する手段を設けたことを特徴とする密閉形圧縮機。1. A compressor main body comprising an electric motor and a compression mechanism is housed in a closed container, and a stator of the electric motor is bolted through a bolt hole provided in the stator,
In a hermetic compressor having a structure fixed to the compression mechanism section, in the space formed by the inner diameter of the bolt hole and the outer diameter of the bolt, the outer diameter of the screw portion of the bolt and the inner diameter of the bolt hole. A hermetic compressor characterized by comprising means for forming a void size smaller than the void size formed by the above.
縮機構部側とは反対側の端面より積厚方向に、前記固定
子の重心位置を包含する距離に設けられたことを特徴と
する密閉形圧縮機。2. The range of forming the small void size includes the position of the center of gravity of the stator in the stacking direction from the end surface of the stator on the side opposite to the compression mechanism portion side. A hermetic compressor characterized by being installed at a distance.
径を部分的に前記ねじ部の外径寸法よりも大なる径とし
たことを特徴とする密閉形圧縮機。3. The device according to claim 1, wherein the means for forming the small void size has an outer diameter of the bolt that is partially larger than an outer diameter of the threaded portion. A hermetic compressor.
固定子の前記ボルト穴の内径に弾性的に係止される略円
筒形部材を用いたことを特徴とする密閉形圧縮機。4. The substantially cylindrical member according to claim 1 or 2, wherein the substantially void-shaped member elastically locked to the inner diameter of the bolt hole of the stator of the electric motor is used as the means for providing the small gap size. Characteristic hermetic compressor.
が略Ｃ字形状を有していることを特徴とする密閉形圧縮
機。5. The hermetic compressor according to claim 4, wherein the substantially cylindrical member has a substantially C-shaped cross-sectional shape in the cylinder longitudinal direction.
金属材料で形成されたことを特徴とする密閉形圧縮機。6. The hermetic compressor according to claim 4, wherein the substantially cylindrical member is made of a metallic material having a spring property such as stainless steel.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7282111A JPH09131001A (en) | 1995-10-30 | 1995-10-30 | Sealed compressor |
| SG1996010879A SG66331A1 (en) | 1995-10-30 | 1996-10-17 | Hermetic compressor |
| KR1019960047592A KR100193644B1 (en) | 1995-10-30 | 1996-10-23 | Hermetic compressor |
| CN96121662A CN1061482C (en) | 1995-10-30 | 1996-10-30 | Hermetic compressor |
| BR9605357A BR9605357A (en) | 1995-10-30 | 1996-10-30 | Hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7282111A JPH09131001A (en) | 1995-10-30 | 1995-10-30 | Sealed compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09131001A true JPH09131001A (en) | 1997-05-16 |
Family
ID=17648275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7282111A Pending JPH09131001A (en) | 1995-10-30 | 1995-10-30 | Sealed compressor |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH09131001A (en) |
| KR (1) | KR100193644B1 (en) |
| CN (1) | CN1061482C (en) |
| BR (1) | BR9605357A (en) |
| SG (1) | SG66331A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1139542A2 (en) * | 2000-03-31 | 2001-10-04 | Matsushita Electric Industrial Co., Ltd. | A compressor and an electric motor |
| JP2005176597A (en) * | 2003-12-10 | 2005-06-30 | Lg Electron Inc | Outer rotor motor for drum washing machine and its manufacturing process |
| JP2006060954A (en) * | 2004-08-23 | 2006-03-02 | Yaskawa Electric Corp | Stator core for dynamo-electric machine |
| CN106593879A (en) * | 2017-01-24 | 2017-04-26 | 广东美芝制冷设备有限公司 | Compressor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414113C (en) * | 2004-05-27 | 2008-08-27 | 乐金电子(天津)电器有限公司 | Drooping preventing structure of horizontal compressor |
| DE102007048936B4 (en) * | 2007-10-12 | 2009-06-18 | Danfoss Compressors Gmbh | Refrigerant compressor arrangement |
| KR101665677B1 (en) * | 2010-06-08 | 2016-10-13 | 아세릭 에이. 에스 | A hermetic compressor |
| EP2958214B1 (en) * | 2013-02-12 | 2017-06-07 | Nissan Motor Co., Ltd | Rotating electrical machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH045486A (en) * | 1990-04-23 | 1992-01-09 | Sanyo Electric Co Ltd | Closed compressor |
-
1995
- 1995-10-30 JP JP7282111A patent/JPH09131001A/en active Pending
-
1996
- 1996-10-17 SG SG1996010879A patent/SG66331A1/en unknown
- 1996-10-23 KR KR1019960047592A patent/KR100193644B1/en not_active IP Right Cessation
- 1996-10-30 CN CN96121662A patent/CN1061482C/en not_active Expired - Fee Related
- 1996-10-30 BR BR9605357A patent/BR9605357A/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1139542A2 (en) * | 2000-03-31 | 2001-10-04 | Matsushita Electric Industrial Co., Ltd. | A compressor and an electric motor |
| EP1139542A3 (en) * | 2000-03-31 | 2002-08-21 | Matsushita Electric Industrial Co., Ltd. | A compressor and an electric motor |
| US6544009B2 (en) | 2000-03-31 | 2003-04-08 | Matsushita Electric Industrial Co., Ltd. | Compressor and electric motor |
| JP2005176597A (en) * | 2003-12-10 | 2005-06-30 | Lg Electron Inc | Outer rotor motor for drum washing machine and its manufacturing process |
| JP2006060954A (en) * | 2004-08-23 | 2006-03-02 | Yaskawa Electric Corp | Stator core for dynamo-electric machine |
| JP4507275B2 (en) * | 2004-08-23 | 2010-07-21 | 株式会社安川電機 | Stator core of rotating electrical machine |
| CN106593879A (en) * | 2017-01-24 | 2017-04-26 | 广东美芝制冷设备有限公司 | Compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1158510A (en) | 1997-09-03 |
| SG66331A1 (en) | 1999-07-20 |
| CN1061482C (en) | 2001-01-31 |
| KR100193644B1 (en) | 1999-06-15 |
| BR9605357A (en) | 1998-07-28 |
| KR970021730A (en) | 1997-05-28 |
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