JPH0528907Y2 - - Google Patents
Info
- Publication number
- JPH0528907Y2 JPH0528907Y2 JP1985126684U JP12668485U JPH0528907Y2 JP H0528907 Y2 JPH0528907 Y2 JP H0528907Y2 JP 1985126684 U JP1985126684 U JP 1985126684U JP 12668485 U JP12668485 U JP 12668485U JP H0528907 Y2 JPH0528907 Y2 JP H0528907Y2
- Authority
- JP
- Japan
- Prior art keywords
- stator core
- cylinder
- bolt holes
- piston
- 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.)
- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本案は密閉型電動圧縮機に係り、特に、シリン
ダを有する枠体とステータコアとを該コアに設け
られた複数のボルト孔に挿通されるボルトにより
締付固定すると共に該コアの外縁部の複数箇所を
溶接やカシメによつて接合した構造の密閉型電動
圧縮機に関する。[Detailed description of the invention] (a) Industrial application field This invention relates to a hermetic electric compressor, and in particular, a frame body having a cylinder and a stator core are inserted through a plurality of bolt holes provided in the core. The present invention relates to a hermetic electric compressor having a structure in which the core is tightened and fixed with bolts, and a plurality of locations on the outer edge of the core are joined by welding or caulking.
(ロ) 従来の技術
従来、この種の密閉型電動圧縮機は、特開昭58
−159644号公報等に記載され第７図乃至第９図に
示すように構成されている。以下説明すると、３
１はシリンダ３２を有する枠体、３３は積層板を
積層してなるステータコアである。前記ステータ
コア３３は、その周縁に穿設されたボルト孔３４
の近傍の外周面に溶接箇所３５を設けこの箇所を
溶接する一方、ボルト孔３４の近傍の端面にカシ
メ部３６を設けこの部分をカシメることにより、
電動機の特性がなるべく低下しないように積層板
を強固に接合して構成されている。そして、この
ステータコア３３は、ボルト孔３４に挿通される
ボルト３７を、枠体３１の取付脚３８に設けた螺
子孔３９に螺合締結させることにより枠体３１に
固定されている。(b) Conventional technology Conventionally, this type of hermetic electric compressor
It is described in Japanese Patent No. 159644 and the like and is configured as shown in FIGS. 7 to 9. To explain below, 3
1 is a frame body having a cylinder 32, and 33 is a stator core formed by laminating laminated plates. The stator core 33 has bolt holes 34 bored on its periphery.
By providing a welding point 35 on the outer circumferential surface near the bolt hole 34 and welding this point, and providing a caulking portion 36 on the end surface near the bolt hole 34 and caulking this portion,
It is constructed by firmly joining laminated plates to prevent the characteristics of the motor from deteriorating as much as possible. The stator core 33 is fixed to the frame body 31 by screwing bolts 37 inserted through the bolt holes 34 into screw holes 39 provided in the mounting legs 38 of the frame body 31.
(ハ) 考案が解決しようとする問題点
しかしながら上記の構成によると、ステータコ
ア３３は、電動機の特性を考慮してボルト孔３４
の近傍だけで締付或いは接合されているため、互
いに隣り合うボルト孔３４の中間部で積層板の接
合強度が弱くなり、この部分、特にピストンの摺
動方向と垂直方向に位置する中間部が、ピストン
の往復運動により生ずる圧縮機本体の振動やコイ
ルの電磁振動に共振して300〜600Hzの低周波騒音
を助長させてしまうという問題があつた。この問
題は第９図に示す1/3オクターブ分析の実験結果
による圧縮機の騒音と周波数成分との関係の図に
おいて、500Hz付近の騒音が大きくなつているこ
とからも確認された。(c) Problems to be solved by the invention However, according to the above configuration, the stator core 33 is formed with bolt holes 34 in consideration of the characteristics of the electric motor.
Since the laminates are tightened or joined only in the vicinity of the bolt holes 34, the joint strength of the laminate is weak in the middle part of the adjacent bolt holes 34, and this part, especially the middle part located perpendicular to the sliding direction of the piston, is However, there was a problem in that the vibrations of the compressor body caused by the reciprocating movement of the piston and the electromagnetic vibrations of the coil resonated and aggravated low frequency noise of 300 to 600 Hz. This problem was also confirmed by the fact that in the graph of the relationship between compressor noise and frequency components based on the experimental results of 1/3 octave analysis shown in Figure 9, the noise around 500Hz became louder.
本案は斯る点に鑑みなされたもので、電動機の
特性をなるべく低下させることなく、ステータコ
アの互いに隣り合うボルト孔の中間部、特に、ピ
ストンの摺動方向と垂直方向に位置する中間部が
圧縮機本体の振動やコイルの電磁振動に共振する
のを防ぎ、圧縮機の騒音のうち300〜600Hzの低周
波騒音を低減することを目的とする。 This proposal was developed in consideration of this point, and it is possible to compress the middle part of the stator core between adjacent bolt holes, especially the middle part located perpendicular to the sliding direction of the piston, without degrading the characteristics of the electric motor as much as possible. The purpose is to prevent vibrations of the machine body and electromagnetic vibrations of the coil from resonating, and to reduce low-frequency noise of 300 to 600 Hz among compressor noise.
(ニ) 問題点を解決するための手段
本案は、密閉容器内に枠体と、この枠体の両側
に配置される圧縮要素及び電動要素とを収納し、
前記圧縮要素はシリンダとこのシリンダ内に配置
されるピストンとで構成し、かつ、電動要素を、
板を積層して外縁部に複数個の溶接やカシメによ
る接合部を有するステータコアと、このステータ
コアの内側に配置されて前記シリンダ内でピスト
ンを往復摺動させるロータとで構成し、前記ステ
ータコアにこのステータコアを枠体に固定するボ
ルトの通るボルト孔を外周側に複数設けた密閉型
電動圧縮機において、前記ステータコアにシリン
ダ内を摺動するピストンの摺動方向と略垂直な方
向で、かつ、互いに隣り合うボルト孔の略中間部
の外縁部の２〜４箇所に接合部をボルト孔と同じ
方向に向けて設けたものである。(d) Measures to solve the problem This proposal houses a frame body, a compression element and an electric element arranged on both sides of this frame body,
The compression element comprises a cylinder and a piston disposed within the cylinder, and the electric element includes:
The stator core is made up of laminated plates and has a plurality of welded or caulked joints on the outer edge, and a rotor that is placed inside the stator core and causes a piston to reciprocate within the cylinder. In a hermetic electric compressor in which a plurality of bolt holes are provided on the outer circumferential side through which bolts for fixing the stator core to the frame pass, the stator core is arranged in a direction substantially perpendicular to the sliding direction of the pistons sliding in the cylinder and mutually. Joints are provided at two to four locations on the outer edges of adjacent bolt holes approximately in the middle, facing in the same direction as the bolt holes.
(ホ) 作用
本案の密閉型電動圧縮機は上記のように構成す
ることにより、ステータコアの互いに隣り合うボ
ルト孔の中間部分のうち、圧縮機本体の振動やコ
イルの電磁振動に特に共振し易いピストンの摺動
方向と略垂直な方向に位置する部分における接合
強度を強めて該コアの剛性を高めることができ、
ステータコアの共振周波数を移動させて圧縮機の
騒音のうち300〜600Hzの低周波騒音を低減したも
のである。また、接合部はステータコアの外縁部
でしかも２〜４箇所程度追加されるだけであるた
め、電動機の特性を著しく低下させるようなこと
はない。(E) Effect By configuring the hermetic electric compressor of the present invention as described above, the piston, which is particularly likely to resonate with the vibration of the compressor body and the electromagnetic vibration of the coil, is located in the intermediate portion of the bolt holes adjacent to each other in the stator core. The rigidity of the core can be increased by increasing the bonding strength at a portion located in a direction substantially perpendicular to the sliding direction of the core.
The resonant frequency of the stator core is moved to reduce the low frequency noise of 300 to 600 Hz of the compressor noise. Furthermore, since the joints are only added at two to four locations at the outer edge of the stator core, the characteristics of the motor will not be significantly degraded.
(ヘ) 実施例
以下本案の一実施例を図面に基づいて説明す
る。(f) Example An example of the present invention will be described below based on the drawings.
１は密閉ケース２内に圧縮機本体３を収納して
なる密閉型電動圧縮機である。前記圧縮機本体３
は、回転軸４と、この回転軸の軸受部５を有する
枠体６と、この枠体の上部に装着されシリンダ
７、ピストン８、コンロツド９等を有する圧縮要
素１０と、前記枠体６の下部に装着されコイル１
１を巻装したステータコア１２、ロータ１３等を
有する電動要素１４とから構成されている。１５
はステータコア１２の外縁部に穿設された４個の
ボルト孔である。１６はこのボルト孔１５にステ
ータコア１２の下側から挿入されたボルトであ
り、このボルトは枠体６の取付脚１７に穿設され
た螺子孔１８に螺合してステータコア１２の片側
を枠体６に固定させている。前記ステータコア１
２は、積層板を該板のボルト孔１５の近傍に設け
られたカシメ部１９でカシメつつ積層した後、該
板を積層方向で加圧しながら、ボルト孔１５の近
傍の外周面に設けられた４個の溶接箇所２０と、
第３図中矢印Ａで示すピストン８の摺動方向に位
置する外周面に設けられた各２個の溶接箇所２１
と、ピストン８の摺動方向と略垂直な方向に位置
しており且つコア１２の中心点Ｏと互いに隣り合
うボルト孔１５の中間点Ｃとを通る直線ｌに対し
て両側に22.5°以内の範囲にある外周面に等間隔
に設けられた各３個の溶接箇所２２を溶接するこ
とにより形成されている。 Reference numeral 1 denotes a hermetic electric compressor in which a compressor main body 3 is housed in a hermetic case 2. The compressor main body 3
The frame 6 includes a rotating shaft 4, a frame 6 having a bearing 5 for the rotating shaft, a compression element 10 mounted on the upper part of the frame and having a cylinder 7, a piston 8, a connecting rod 9, etc., and the frame 6. Coil 1 attached to the bottom
1, and an electric element 14 having a rotor 13 and the like. 15
are four bolt holes drilled in the outer edge of the stator core 12. Reference numeral 16 denotes a bolt inserted into this bolt hole 15 from below the stator core 12, and this bolt is screwed into a threaded hole 18 drilled in the mounting leg 17 of the frame body 6, so that one side of the stator core 12 is attached to the frame body. It is fixed at 6. The stator core 1
2, after laminating the laminated plates while caulking them at the caulking part 19 provided in the vicinity of the bolt holes 15 of the plates, the laminated plates were laminated while being pressurized in the stacking direction, and the laminated plates were laminated on the outer peripheral surface in the vicinity of the bolt holes 15. 4 welding points 20,
Two welding points 21 each are provided on the outer peripheral surface of the piston 8 in the sliding direction indicated by arrow A in FIG.
and within 22.5 degrees on both sides of the straight line l that is located in a direction substantially perpendicular to the sliding direction of the piston 8 and that passes through the center point O of the core 12 and the intermediate point C of the mutually adjacent bolt holes 15. It is formed by welding three welding points 22 provided at equal intervals on the outer circumferential surface of the area.
このように構成された密閉型電動圧縮機におい
て、ステータコア１２には、直線ｌに対して両側
に22.5°以内の範囲にある外周面に各３個の溶接
箇所２２を設けているため、コアの互いに隣り合
うボルト孔１５の中間部分のうち、特に、圧縮機
本体３の振動やコイル１１の電磁振動に共振し易
いピストン８の摺動方向と略垂直な方向に位置す
る中間部分の接合強度を強めコア１２の剛性を高
めることができる。これにより、ステータコア１
２の共振周波数を移動させ、圧縮機の騒音のうち
300〜600Hzの低周波騒音を低減したものである。
また、各３個の溶接箇所２２は等間隔に設けてい
るのでなるべく少ない溶接箇所数でより大きな強
度アツプを実現している。更に、上述の溶接箇所
２２は電動機の特性にあまり影響のないステータ
コア１２の外周面に設けられていること及び特に
共振し易いピストン８の摺動方向と略垂直な方向
に位置する外周面の３箇所だけに設けられている
ことから、電動機の特性を著しく低下させるよう
なことはない。 In the hermetic electric compressor configured in this way, the stator core 12 has three welding points 22 on each outer circumferential surface within a range of 22.5 degrees on both sides with respect to the straight line l. Among the intermediate portions of the bolt holes 15 adjacent to each other, the joint strength of the intermediate portion located in a direction substantially perpendicular to the sliding direction of the piston 8, which tends to resonate with vibrations of the compressor body 3 and electromagnetic vibrations of the coil 11, is particularly determined. The rigidity of the reinforced core 12 can be increased. As a result, stator core 1
By moving the resonant frequency of 2, the noise of the compressor is reduced.
This reduces low frequency noise between 300 and 600Hz.
Moreover, since the three welding points 22 are provided at equal intervals, a greater increase in strength is achieved with as few welding points as possible. Furthermore, the above-mentioned welding points 22 are provided on the outer circumferential surface of the stator core 12, which does not have much influence on the characteristics of the electric motor, and the welding points 22 are provided on the outer circumferential surface of the stator core 12, which is located in a direction substantially perpendicular to the sliding direction of the piston 8, which is particularly susceptible to resonance. Since it is provided only at certain locations, it does not significantly degrade the characteristics of the motor.
以上のことは第４図に示す1/3オクターブ分析
の実験結果による圧縮機の騒音と周波数成分との
関係の図、及び第５図に示す実験結果による圧縮
機のケース温度と騒音との関係の図（○印…本実
施例、×印…従来例、実線…Ａ特性、破線…500Hz
音）において、500Hz付近の騒音が従来例に比し
て減少していることからも確認された。更に、第
６図に示す500Hz音におけるピーク音と上述した
範囲（直線ｌに対して両側に22.5°以内の範囲）
での溶接箇所数との関係の実験結果において、２
箇所以上であればピーク音が30（dB）代に押えら
れることが確認されている一方、５箇所以上設け
てもピーク音はそれ程下がらないことが確認され
ており、電動機の特性を考慮した場合、上述の範
囲内における望ましい溶接箇所数は２〜４という
ことになる。 The above is based on the relationship between compressor noise and frequency components based on the experimental results of 1/3 octave analysis shown in Figure 4, and the relationship between compressor case temperature and noise based on the experimental results shown in Figure 5. (○ mark: present example, × mark: conventional example, solid line: A characteristic, broken line: 500Hz
This was also confirmed by the fact that the noise around 500Hz was reduced compared to the conventional example. Furthermore, the peak sound of the 500Hz sound shown in Figure 6 and the range mentioned above (range within 22.5° on both sides of the straight line l)
In the experimental results of the relationship with the number of welding points, 2
It has been confirmed that the peak sound can be suppressed to the 30 (dB) range if it is installed at more than 5 points, but it has also been confirmed that the peak sound does not decrease that much even if it is installed at 5 or more points, considering the characteristics of the motor. , the desirable number of welding points within the above range is 2 to 4.
尚、本実施例では、ステータコア１２の外周面
における上述した範囲に溶接箇所２２を２〜４箇
所設けるものについて説明したが、コア１２の外
縁部にカシメ箇所を設けたもの或いはカシメと溶
接を併用したようなものの場合でも、上述した範
囲（ピストンの摺動方向と略垂直な方向に位置し
ておりしかも直線ｌに対して両側に22.5°以内の
範囲）にあるコアの外縁部に同数（２〜４箇所）
設ければ同様の効果が得られ何等本案を逸脱する
ものではない。 In this embodiment, two to four welding points 22 are provided in the above-mentioned range on the outer circumferential surface of the stator core 12. Even in the case of such a product, the same number (2 ~4 locations)
If provided, the same effect would be obtained and it would not deviate from the merits of the proposal in any way.
(ト) 考案の効果
以上のように本案によれば、密閉容器内に枠体
と、この枠体の両側に配置される圧縮要素及び電
動要素とを収納し、前記圧縮要素はシリンダとこ
のシリンダ内に配置されるピストンとで構成し、
かつ、電動要素を、板を積層して外縁部に複数個
の溶接やカシメによる接合部を有するステータコ
アと、このステータコアの内側に配置されて前記
シリンダ内でピストンを往復摺動させるロータと
で構成し、前記ステータコアにこのステータコア
を枠体に固定するボルトの通るボルト孔を外周側
に複数設けた密閉型電動圧縮機において、前記ス
テータコアにシリンダ内を摺動するピストンの摺
動方向と略垂直な方向で、かつ、互に隣り合うボ
ルト孔の略中間部の外縁部の２〜４箇所に接合部
をボルト孔と同じ方向に向けて設けので、前記ス
テータコアの互いに隣り合うボルト孔の略中間部
のうち、圧縮機本体の振動やコイルの電磁振動に
特に共振し易いピストンの摺動方向と略垂直な方
向に位置する部分における接合強度を強めて該コ
アの剛性を高めることができ、ステータコアの共
振周波数を移動させて圧縮機の騒音のうち300〜
600Hzの低周波騒音を低減することができる。ま
た、接合部は電動機の特性にあまり影響のないス
テータコアの外縁部でしかも２〜４箇所程度追加
されるだけであるため、電動機の特性を著しく低
下させるようなこともない。(g) Effect of the invention As described above, according to the present invention, a frame, a compression element and an electric element arranged on both sides of the frame are housed in a closed container, and the compression element is connected to a cylinder and the electric element arranged on both sides of the frame. It consists of a piston placed inside the
Further, the electric element is composed of a stator core made of laminated plates and having a plurality of welded or caulked joints on the outer edge thereof, and a rotor that is disposed inside the stator core and causes the piston to reciprocate within the cylinder. In a hermetically sealed electric compressor in which the stator core is provided with a plurality of bolt holes on the outer circumferential side through which bolts for fixing the stator core to the frame pass, the stator core is provided with holes substantially perpendicular to the sliding direction of the piston sliding in the cylinder. Since the joints are provided at 2 to 4 locations on the outer edge of the stator core in the same direction as the bolt holes and approximately in the middle of the adjacent bolt holes of the stator core, The rigidity of the stator core can be increased by strengthening the bonding strength in the part located in the direction substantially perpendicular to the sliding direction of the piston, which is particularly likely to resonate with the vibration of the compressor body and the electromagnetic vibration of the coil. 300 ~ of the compressor noise by moving the resonant frequency
Can reduce low frequency noise of 600Hz. Furthermore, since the joints are only added at two to four locations on the outer edge of the stator core, which have little effect on the characteristics of the motor, the characteristics of the motor will not be significantly degraded.
第１図乃至第３図は本考案の一実施例を示し、
第１図は密閉型圧縮機の一部切欠縦断面図、第２
図は電動圧縮機本体の平面図、第３図はステータ
コアの平面図、第４図は実験結果による圧縮機の
騒音と周波数成分との関係を示す図、第５図は実
験結果による圧縮機のケース温度と騒音との関係
を示す図、第６図は実験結果による接合部の個数
と騒音との関係を示す図、第７図及び第８図は従
来例を示し、第７図は圧縮機本体の要部縦断面
図、第８図はステータコアの平面図、第９図は実
験結果による圧縮機の騒音と周波数成分との関係
を示す図である。
１……密閉型電動圧縮機、６……枠体、７……
シリンダ、８……ピストン、１２……ステータコ
ア、１５……ボルト孔、１６……ボルト、２２…
…溶接箇所。
1 to 3 show an embodiment of the present invention,
Figure 1 is a partially cutaway vertical sectional view of a hermetic compressor, Figure 2
The figure is a plan view of the electric compressor main body, Figure 3 is a plan view of the stator core, Figure 4 is a diagram showing the relationship between compressor noise and frequency components based on experimental results, and Figure 5 is a diagram showing the relationship between compressor noise and frequency components based on experimental results. Figure 6 is a diagram showing the relationship between case temperature and noise, Figure 6 is a diagram showing the relationship between the number of joints and noise based on experimental results, Figures 7 and 8 are conventional examples, and Figure 7 is a diagram showing the relationship between the number of joints and noise based on experimental results. 8 is a plan view of the stator core, and FIG. 9 is a diagram showing the relationship between compressor noise and frequency components based on experimental results. 1... Hermetic electric compressor, 6... Frame, 7...
Cylinder, 8... Piston, 12... Stator core, 15... Bolt hole, 16... Bolt, 22...
...Welding location.
Claims (1)
れる圧縮要素及び電動要素とを収納し、前記圧縮
要素はシリンダとこのシリンダ内に配置されるピ
ストンとを有し、かつ、電動要素は板を積層して
外縁部に複数個の溶接やカシメによる接合部を有
するステータコアと、このステータコアの内側に
配置されて前記シリンダ内でピストンを往復摺動
させるロータとを有し、前記ステータコアにはこ
のステータコアを枠体に固定するボルトの通るボ
ルト孔が外周側に複数設けられている密閉型電動
圧縮機において、前記ステータコアにはシリンダ
内を摺動するピストンの摺動方向と略垂直な方向
で、かつ、互いに隣り合うボルト孔の略中間部の
外縁部の２〜４箇所に接合部がボルト孔と同じ方
向に向けて設けられていることを特徴とする密閉
型電動圧縮機。 A frame body, a compression element and an electric element disposed on both sides of the frame body are housed in a closed container, and the compression element has a cylinder and a piston disposed within the cylinder, and the electric element has a stator core made of laminated plates and has a plurality of welded or caulked joints on the outer edge, and a rotor that is disposed inside this stator core and causes a piston to reciprocate within the cylinder, In this hermetic electric compressor, the stator core is provided with a plurality of bolt holes on the outer periphery through which bolts for fixing the stator core to the frame pass, and the stator core is provided with holes in a direction substantially perpendicular to the sliding direction of the piston sliding in the cylinder. What is claimed is: 1. A hermetic electric compressor, characterized in that joint portions are provided at 2 to 4 locations on the outer edges of the substantially intermediate portions of adjacent bolt holes, facing in the same direction as the bolt holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985126684U JPH0528907Y2 (en) | 1985-08-20 | 1985-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985126684U JPH0528907Y2 (en) | 1985-08-20 | 1985-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6238048U JPS6238048U (en) | 1987-03-06 |
| JPH0528907Y2 true JPH0528907Y2 (en) | 1993-07-26 |
Family
ID=31020722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985126684U Expired - Lifetime JPH0528907Y2 (en) | 1985-08-20 | 1985-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528907Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53135402A (en) * | 1977-04-28 | 1978-11-27 | Toshiba Corp | Rotating electric machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59103543U (en) * | 1982-12-27 | 1984-07-12 | ダイキン工業株式会社 | Stator attachment/detachment structure in compressor |
-
1985
- 1985-08-20 JP JP1985126684U patent/JPH0528907Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53135402A (en) * | 1977-04-28 | 1978-11-27 | Toshiba Corp | Rotating electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6238048U (en) | 1987-03-06 |
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