JPS5888476A - Vibration absorber for enclosed rotary compressor - Google Patents

Abstract

PURPOSE:To provide effective vibrating absorbing effect by arranging a mounting frame formed in U-shaped opposed surface with through holes on the outer wall of an enclosed rotary compressor and mounting a wieght removable on the mounting frame through supports made of elastic material. CONSTITUTION:On the outer wall of an enclosed container 1 is fixedly mounted a mounting frame 11 formed in the generally U-shaped surfaces with through holes 12, 12 in which is removably mounted a weight 13 through supports 14, 14 of elastomer such as hard rubber. The mass of said weight 13 and the spring constant of supports 14, 14 are selected such that the characteristic frequency of vibration absorber in the rotational direction of an enclosed rotary compressor is approximately equal to the rotational frequency of the compressor. And by driving a motor is vibrated the vibration absorber in response to the produced vibration to reduce the vibration of the compressor. Since these supports 14 is of elastomer, they are strong against shock and further removably attached so that the size of packaged comressor and the volume in a transport truck which is occupied by this compressor can be reduced.

Description

【発明の詳細な説明】 本発明は、密閉形回転圧縮機の圧縮機運転中に生ずる振
動を低減するためのいわゆるダイ、ナミツクダンバーの
原理にもとづいた吸振装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration absorbing device based on the so-called die or Namic damper principle for reducing vibrations occurring during compressor operation of a hermetic rotary compressor.

従来、この種の吸振装置は第７図に示すように圧縮機の
密閉容器（ａ）の外壁に鋼棒からなる重錘柄（ｂ）を溶
接手段によって取付け、その重錘柄（ｂ）の先端に鉄等
の重錘（Ｃ）を取付ける構造であった。ところが、かか
る従来の構造は充分な吸振効果を得るために、重錘（Ｃ
）を十分に重くするとともに５重錘（Ｃ）の取付は位置
を密閉容器■）の外壁からさらに外方に十分に大きな距
離を確保しなくてはならず、その結果、重錘柄（ｂ）は
長いものが必要であった。Conventionally, in this type of vibration absorbing device, as shown in Fig. 7, a weight handle (b) made of a steel rod is attached to the outer wall of a closed container (a) of a compressor by welding. It had a structure in which a weight (C) of iron or other material was attached to the tip. However, in this conventional structure, in order to obtain a sufficient vibration absorption effect, a weight (C
) must be sufficiently heavy, and the position of the five-weight (C) must be secured at a sufficiently large distance outward from the outer wall of the closed container (■). As a result, the weight handle (B ) needed to be long.

したがって、上記従来の構造は、特に運搬時の強い衝撃
等によって重錘柄（ｂ）の曲がりや圧縮機の運転による
重錘柄（ｂｌの疲労破壊といった問題が発生する欠点を
有していた。さらに、この従来の吸振装置は、圧縮機の
側方へ長く突出しているために、圧縮機の輸送のだめの
梱包が大形化かつ複雑化となり、また重錘柄（ｂ）が長
いために、冷凍装置への組込みにおいては、その作業性
が悪く、アわせて冷凍装置が大形化になるものであった
。Therefore, the above-mentioned conventional structure has the disadvantage that the weight handle (b) may bend due to strong impact during transportation, or fatigue fracture of the weight handle (bl) may occur due to operation of the compressor. Furthermore, since this conventional vibration absorbing device protrudes long to the side of the compressor, the packaging for transporting the compressor becomes large and complicated, and the weight handle (b) is long, so When incorporated into a refrigeration system, the workability is poor, and the refrigeration system becomes large in size.

本発明は、上記従来の吸振装置にみられる欠点を解消す
るものである。そのための構成として、本発明は密閉容
器の内部に電動機とこの電動機によって駆動される圧縮
機構部をそれぞれ固定して密閉型回転圧縮機を構成し、
前記密閉容器の外壁に、はぼコの字形に形成されかつ相
対する面に貫通孔を形１友した取付枠を配設し、さらに
重錘の相対する面に、硬質ゴム等の弾性材料よりなる支
持体を取付け、この支持体を前記取付枠の貫通孔に着脱
自在に増付けたものである。The present invention eliminates the drawbacks found in the conventional vibration absorbing devices described above. As a configuration for this purpose, the present invention configures a hermetic rotary compressor by fixing an electric motor and a compression mechanism section driven by the electric motor inside a hermetically sealed container,
A mounting frame is provided on the outer wall of the airtight container and has a through hole in the opposing surface, and a mounting frame made of an elastic material such as hard rubber is provided on the opposing surface of the weight. A support body is attached thereto, and this support body is removably attached to the through hole of the mounting frame.

以下、本発明をその実施例を示す添「・１図面の第１図
〜第６図を参考に説明する。Hereinafter, the present invention will be explained with reference to FIGS. 1 to 6 of the appendix ".1 drawings" showing embodiments thereof.

まず、第１図、第２図によシ、密閉形回転圧縮機の概略
構造について説明する。First, the schematic structure of a hermetic rotary compressor will be explained with reference to FIGS. 1 and 2.

同図において、１は密閉容器で、その内部には上方に電
動機要素を構成する固定子２と回転子３が配設され、ま
た下方には前記電動機要素によって直接駆動される圧縮
機構部４が配設されている。In the figure, reference numeral 1 denotes an airtight container, in which a stator 2 and a rotor 3 constituting an electric motor element are arranged above, and a compression mechanism section 4 directly driven by the electric motor element is arranged below. It is arranged.

この圧縮機構部４は、ピストン６、シャフト６゜ベー７
７などの可動部分と、シリンダ８．軸受９゜１０などの
固定部分よシ構成さ杆ている。This compression mechanism section 4 includes a piston 6, a shaft 6° base 7
Movable parts such as 7 and cylinder 8. The rod is composed of fixed parts such as bearings 9 and 10.

次に、上記構成からなる密閉形回転圧縮機に本発明の一
実施例における吸振装置を取付けた構造について第３図
〜第６図により説明する。同図において、１１は取付枠
で、密閉容器１の外壁に溶接手段によって取付けられて
いる。この取付枠１１は、はぼコの字形に形成され、相
対する而１１１Ｌ、１１ａには貫通孔１２．１２が形成
されている。１３は鉄などが６なる重錘で柱状に形成さ
れ、その相対する面には支持穴１３ａ、１３ａが形成さ
れている。１４．１４は硬質ゴム等の弾性材料からなる
支持体で、前記貫通孔１２．１２よシ嵌合され、重錘１
３の支持穴１３ａ、１３ａに圧入嵌合して重錘１３を取
付枠１１に取付けている。この支持体１４．１４は必要
に応じて取りはずせるようにねじ形状等の策がとられて
いる。Next, a structure in which a vibration absorbing device according to an embodiment of the present invention is attached to the hermetic rotary compressor having the above configuration will be explained with reference to FIGS. 3 to 6. In the figure, reference numeral 11 denotes a mounting frame, which is attached to the outer wall of the closed container 1 by welding means. This mounting frame 11 is formed in a box-like shape, and through holes 12 and 12 are formed in opposing frames 111L and 11a. Reference numeral 13 is a weight made of iron or the like and is formed into a columnar shape, and support holes 13a, 13a are formed on opposing surfaces thereof. 14.14 is a support made of an elastic material such as hard rubber, which is fitted into the through hole 12.12 and supports the weight 1.
The weight 13 is attached to the mounting frame 11 by being press-fitted into the support holes 13a, 13a of No.3. This support 14.14 is provided with a threaded shape or the like so that it can be removed if necessary.

ここで、前記重錘１３の質量と支持体１４．１４のばね
定数は、前記密閉形回転圧縮機の回転方向における吸振
装置の固有振動数と圧縮機の回転数がほぼ等しくなるよ
うに選定されている。Here, the mass of the weight 13 and the spring constant of the support body 14.14 are selected so that the natural frequency of the vibration absorbing device and the rotational speed of the compressor in the rotational direction of the hermetic rotary compressor are approximately equal. ing.

上記構成において、電動機要素を駆動すれば、圧縮機構
部４は一定回転数で回転し、吸振装置はこれによりて発
生する振動に付随して振動する。In the above configuration, when the electric motor element is driven, the compression mechanism section 4 rotates at a constant rotational speed, and the vibration absorbing device vibrates along with the vibrations generated thereby.

そして周知の原理により圧縮機の振動が軽減されるＯ したがって、支持体１４．１４のばね定数や形状を適当
に選ぶことにより、吸振装置が密閉容器１の外方に張り
出す寸法を小さくできるために、冷凍機への組込みが容
易となり、さらに、支持体１４．１４は弾性率の高いゴ
ム質のものであるから支持体１４．１４の形状を大きく
しても所要のばね常数が得られ、また、支持体１４．１
４は輸送時や運転中の強いショックに対しても破損が防
止できる形状とすることができる。さらに重錘１３は着
脱可能であるため、圧縮機と別にして。The vibrations of the compressor are reduced according to well-known principles. Therefore, by appropriately selecting the spring constant and shape of the support 14.14, it is possible to reduce the extent to which the vibration absorbing device protrudes outward from the closed container 1. In addition, since the support body 14.14 is made of rubber with a high elastic modulus, the required spring constant can be obtained even if the shape of the support body 14.14 is made large. Also, the support 14.1
4 can have a shape that can prevent damage even when subjected to strong shocks during transportation or operation. Furthermore, since the weight 13 is removable, it can be installed separately from the compressor.

輸送することもでき、圧縮機の梱包の大きさや、輸送機
関内の占有体積が小さくなる。It can also be transported, reducing the size of the compressor's packaging and the volume it occupies in the transport vehicle.

しかも、圧縮機に前記取付枠１１を取付けるのみである
ため、わずかに余分のコストがかかるだけで、吸振装置
を必要とする圧縮機も必要としない圧縮機も共通に生産
できる。Furthermore, since the mounting frame 11 is simply attached to the compressor, both compressors that require a vibration absorber and compressors that do not require a vibration absorber can be commonly produced with only a slight extra cost.

次に、本発明の他の実施例を第６図により説明する。こ
こで、先の実施例と同一のものについては同一の番号を
付して説明を省略する。Next, another embodiment of the present invention will be described with reference to FIG. Here, the same numbers as those in the previous embodiment are given the same numbers, and the description thereof will be omitted.

同図において、１６は密閉容器１にあらかじめ溶接等に
よって設けられた埋込みボルト、１６はこの埋込みボル
ト１６と螺合するナツトである０１７は取付枠１１に設
けられた取付は穴である。In the figure, reference numeral 16 indicates an embedded bolt that is previously provided in the sealed container 1 by welding or the like, 16 indicates a nut that is screwed into the embedded bolt 16, and 017 indicates a mounting hole provided in the mounting frame 11.

上記構成によれば、先の実施例の効果に加えて圧縮機側
と吸振装置側がそれぞれ独立して生産できるため、組立
て作業性がきわめて良好となシ、しかも必要に応じて吸
振装置が後から組込めるとともに、吸振装置の汎用性が
はかれる。According to the above configuration, in addition to the effects of the previous embodiment, the compressor side and the vibration absorbing device side can be manufactured independently, so the assembly workability is extremely good.Moreover, the vibration absorbing device can be installed later if necessary. In addition to being easy to incorporate, the vibration absorbing device becomes more versatile.

上記実施例より明らかなように５本発明における密閉形
回転圧縮機の吸振装置は、密閉容器の内部に、電動機と
この電動機によって駆動される圧縮機構部をそれぞれ固
定して密閉形回転圧縮機を構成し、前記密閉容器の外壁
に、はぼコの字形に形成されかつ相対する面に貫通孔を
形成した取付枠を配設し、さらに重錘の相対する面に、
硬質ゴム等の弾性材料よりなる支持体を取付け、この支
持体を前記取付枠の貫通孔に着脱自在に取付けたもので
、はぼコ字形の取−付は枠にて重錘を支持するため、従
来の如く棒状の重錘柄にて重錘を支持する構造に比べて
その突出寸法が小さくでき、圧縮機全体を小形にして冷
凍装置への組込みを容易にすることができ、さらに重錘
は取付は枠より着脱可能であるため、輸送時に別梱包と
して落下衝撃等に際しての吸振装置の破損が防止でき、
しかも支持体のバネ定数や形状を適当に選定すれば従来
と同様に効果的な振動吸収効果が得られる等。As is clear from the above embodiments, the vibration absorbing device for a hermetic rotary compressor according to the present invention has a hermetic rotary compressor by fixing an electric motor and a compression mechanism driven by the electric motor inside a hermetically sealed container. a mounting frame formed in the shape of a box and having a through hole formed on opposing surfaces is disposed on the outer wall of the airtight container, and further on opposing surfaces of the weight,
A support made of an elastic material such as hard rubber is attached, and this support is removably attached to the through hole of the mounting frame. Compared to the conventional structure in which the weight is supported by a rod-shaped weight handle, the protruding dimension of the weight can be made smaller, making it possible to make the entire compressor smaller and making it easier to incorporate it into a refrigeration system. Since the installation is removable from the frame, it can be packed separately during transportation to prevent damage to the vibration absorption device in the event of a drop impact, etc.
Furthermore, if the spring constant and shape of the support are appropriately selected, it is possible to obtain the same effective vibration absorption effect as before.

種々の利点を有するものである。It has various advantages.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は密閉形回転圧縮機の概略構造を示す縦断面図、
第２図は第１図の［Ｉ−［１線による横断面図、第３図
および第４図はそれぞれ本発明の一実施例における密閉
形回転圧縮機における吸振装置の取付は状態を示す平面
図および側面図、第６図は第４図のＶ−Ｖ線による要部
拡大断面図、第６図は本発明の他の実施例を示す第６図
相当図、第７図は従来例を示す吸振装置を具備した圧縮
機の側面図である。 １・・・・・・密閉容器、２・・・・・・固定子、３・
・・・・・回転子、４・・・・・・圧縮機構部、１１・
・・・・・取付は枠、１１ａ・・・・・・・相対する面
、１２・・・・・・貫通孔、１３・・・・・・重錘。 １３ａ・・・・・・支持穴、１４・・・・・・支持体。 代理人の氏名　弁理士　中　尾　敏　男　はが１名第３
図 第４図 第６図 第７図Figure 1 is a longitudinal sectional view showing the schematic structure of a hermetic rotary compressor;
FIG. 2 is a cross-sectional view taken along the [I-[1 line] of FIG. Figure 6 is an enlarged sectional view of the main part taken along line V-V in Figure 4, Figure 6 is a view equivalent to Figure 6 showing another embodiment of the present invention, Figure 7 is a conventional example. FIG. 2 is a side view of a compressor equipped with a vibration absorbing device shown in FIG. 1...Airtight container, 2...Stator, 3.
...Rotor, 4...Compression mechanism section, 11.
...Mounting is done on the frame, 11a... opposing surface, 12... through hole, 13... weight. 13a...Support hole, 14...Support body. Name of agent: Patent attorney Toshio Nakao Haga 1 person No. 3
Figure 4 Figure 6 Figure 7

Claims (1)

【特許請求の範囲】[Claims] 密閉容器の内部に、電動機とこの電動機によって駆動さ
れる圧縮機構部をそれぞれ固定して賃閉形回転圧縮機を
構成し、前記密閉容器の外壁にほぼコの字形に形成され
かつ相対する面に貫通孔を形成した取付枠を配設し、さ
らに重錘の相対する面に硬質ゴム等の弾性材料よりなる
支持体を取付け、この支持体を前記取付枠の貫通孔に着
脱自在に取付けた密閉形回転圧縮機の吸振装置。A closed rotary compressor is constructed by fixing an electric motor and a compression mechanism driven by the electric motor inside an airtight container, and a compressor is formed in a substantially U-shape on the outer wall of the airtight container and penetrates through opposing surfaces. A closed type in which a mounting frame with a hole is provided, a support made of an elastic material such as hard rubber is attached to the opposite side of the weight, and this support is detachably attached to the through hole of the mounting frame. Vibration absorption device for rotary compressors.