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JP4034767B2 - Elastic member for vibration absorption of refrigerator - Google Patents

Elastic member for vibration absorption of refrigerator Download PDF

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JP4034767B2
JP4034767B2 JP2004247101A JP2004247101A JP4034767B2 JP 4034767 B2 JP4034767 B2 JP 4034767B2 JP 2004247101 A JP2004247101 A JP 2004247101A JP 2004247101 A JP2004247101 A JP 2004247101A JP 4034767 B2 JP4034767 B2 JP 4034767B2
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elastic member
compressor
vibration
base
support portion
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JP2005147128A (en
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テ ヒー リー
ヨウン フーン ユン
ヨン グ キム
ドン フーン リー
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LG Electronics Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Vibration Prevention Devices (AREA)

Description

本発明は、圧縮機駆動により発生する振動を吸収する弾性部材、及び、この弾性部材を利用した冷蔵庫に関し、特に冷蔵庫の圧縮機により発生する振動が他の部品や冷蔵庫の全体に伝逹されて騒音が発生することを防止するように、その形状が改善された振動吸収用弾性部材に関する。   The present invention relates to an elastic member that absorbs vibration generated by driving a compressor, and a refrigerator that uses the elastic member, and in particular, vibration generated by the compressor of the refrigerator is transmitted to other parts and the entire refrigerator. The present invention relates to a vibration-absorbing elastic member whose shape is improved so as to prevent generation of noise.

一般的に、冷蔵庫は、冷凍サイクルにより内部空間を所定温度以下に維持することで、新鮮度を長時間の間維持しながら飲食物を保管又は冷凍するための装置であって、前記冷蔵庫の内部は、圧縮機の駆動により所定温度以下に維持される。   Generally, a refrigerator is a device for storing or freezing food and drink while maintaining freshness for a long time by maintaining the internal space below a predetermined temperature by a refrigeration cycle, Is maintained below a predetermined temperature by driving the compressor.

前記冷凍サイクルを構成するために、前記冷蔵庫には冷媒を高温高圧に圧縮する圧縮機が具備されるが、該圧縮機の駆動時には振動と騒音とが継続して発生するために、前記冷蔵庫には上記のように発生する振動及び騒音の減少のために振動吸収用防振装置が設けられる。   In order to constitute the refrigeration cycle, the refrigerator is provided with a compressor that compresses the refrigerant to high temperature and high pressure. When the compressor is driven, vibration and noise continuously occur. In order to reduce the vibration and noise generated as described above, a vibration absorbing vibration isolator is provided.

以下、上記の機能を行う従来の防振装置に対し、図１及び図２を参照して説明する。
従来の防振装置Ｍは、図１及び図２に示したように、冷媒を高圧に圧縮して吐出する圧縮機１０が装着される弾性部材２０と、該弾性部材２０を支持するスタンド３０とを有して構成される。 Hereinafter, a conventional vibration isolator that performs the above function will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the conventional vibration isolator M includes an elastic member 20 to which a compressor 10 that compresses and discharges a refrigerant to a high pressure and a stand 30 that supports the elastic member 20. It is comprised.

より詳細に説明すると、前記冷蔵庫の機械室の内部には冷媒を圧縮する圧縮機１０が設置され、該圧縮機１０は前記防振装置Ｍの上部に装着される。前記弾性部材２０は、ゴムのように弾性を有する材質から成り、前記圧縮機１０から延長された圧縮機足部１１が装着されるように上部に形成された圧縮機装着部２１と、上下方向に貫通する中空部２２とを有する円筒状に形成される。   More specifically, a compressor 10 for compressing a refrigerant is installed inside the machine room of the refrigerator, and the compressor 10 is mounted on an upper portion of the vibration isolator M. The elastic member 20 is made of a material having elasticity such as rubber, and has a compressor mounting portion 21 formed at an upper portion so that a compressor foot portion 11 extended from the compressor 10 is mounted, and a vertical direction. It is formed in a cylindrical shape having a hollow portion 22 penetrating therethrough.

前記スタンド３０は、前記弾性部材２０の中空部を軸方向に貫通して設置され、その下端が底部１に固定されて前記弾性部材２０の離脱を防止する。このために、前記スタンド３０の下方の所定位置には環状の挿入溝３１が形成され、該挿入溝３１に対応して前記弾性部材の内周面には前記スタンド３０の挿入溝３１に挿入される固定突起２３が形成され、前記弾性部材２０の上端には中心方向に突出した支持突起２４が形成される。言い換えれば、前記固定突起２３が前記挿入溝３１に挿入され、前記支持突起２４が前記スタンド３０の上部外周面を支持することで、前記弾性部材２０が固定される。   The stand 30 is installed through the hollow portion of the elastic member 20 in the axial direction, and a lower end thereof is fixed to the bottom portion 1 to prevent the elastic member 20 from being detached. For this purpose, an annular insertion groove 31 is formed at a predetermined position below the stand 30 and is inserted into the insertion groove 31 of the stand 30 on the inner peripheral surface of the elastic member corresponding to the insertion groove 31. A fixing protrusion 23 is formed, and a support protrusion 24 protruding in the center direction is formed at the upper end of the elastic member 20. In other words, the elastic protrusion 20 is fixed by the fixing protrusion 23 being inserted into the insertion groove 31 and the support protrusion 24 supporting the upper outer peripheral surface of the stand 30.

一方、前記冷蔵庫に提供される圧縮機１０は主に往復動式圧縮機であって、該圧縮機の駆動中には、約６０Hzの周波数振動が継続して発生し、該振動は前記圧縮機１０と連結された各部品により他部品及び前記機械室の底部に伝逹されて騒音を発生させる。   On the other hand, the compressor 10 provided in the refrigerator is mainly a reciprocating compressor, and a frequency vibration of about 60 Hz is continuously generated while the compressor is driven, and the vibration is generated in the compressor. The components connected to the motor 10 are transmitted to other components and the bottom of the machine room to generate noise.

図３は、周波数比(周波数/システム固有振動数)に対する底部への振動伝逹率を示したグラフである。
図３に示したように、冷蔵庫に提供される圧縮機の加振周波数は、ほぼ一定であり、前記周波数比(frequency ratio)が１である場合に共振現象が発生するために、一定の加振周波数条件下で前記振動伝逹率を１より低くするためには、システムの固有振動数を減らして前記周波数比を高めなければならない。 FIG. 3 is a graph showing the vibration transmission rate to the bottom with respect to the frequency ratio (frequency / system natural frequency).
As shown in FIG. 3, the excitation frequency of the compressor provided to the refrigerator is substantially constant, and a resonance phenomenon occurs when the frequency ratio is 1. In order to make the vibration transmission rate lower than 1 under vibration frequency conditions, the natural frequency of the system must be reduced to increase the frequency ratio.

ここで、前記システムの固有振動数をfとすると、該固有振動数fは、f=(１/２π)(ｋ/m)1/2として表現され、該式におけるｋはシステムのスチフネスを示す強度係数で、ｍはシステムの質量である。 Here, when the natural frequency of the system is f, the natural frequency f is expressed as f = (1 / 2π) (k / m) 1/2 , and k in the equation indicates the stiffness of the system. Intensity factor, m is the mass of the system.

しかしながら、従来の弾性部材２０においては、前記圧縮機１０による垂直方向の圧縮荷重を受ける部分２５が全体的に同一線上(図２の矢印方向の線上)にあるために、すなわち、この部分２５が前記弾性部材２０全体とほぼ同一半径上に位置するために、前記弾性部材２０は、主に縦方向の圧縮荷重を受けるようになる。   However, in the conventional elastic member 20, the portion 25 that receives the compressive load in the vertical direction by the compressor 10 is entirely on the same line (on the line in the direction of the arrow in FIG. 2), that is, the portion 25 is Since the elastic member 20 is located on substantially the same radius as the whole elastic member 20, the elastic member 20 mainly receives a compressive load in the vertical direction.

即ち、従来の弾性部材２０は圧縮荷重を主に受けるために、小さな変形量と大きな強度係数ｋとを有し、それにより、周波数比が小さくなって、底部への振動伝逹率が増加し、前記圧縮機の駆動による冷蔵庫の振動が激しくなって、更に騒音も大きくなるという問題点があった。   That is, since the conventional elastic member 20 mainly receives the compressive load, it has a small deformation amount and a large strength coefficient k, thereby reducing the frequency ratio and increasing the vibration transmission rate to the bottom. There is a problem that the vibration of the refrigerator due to the driving of the compressor becomes intense, and the noise further increases.

本発明は上記の問題点を解決するためのものであり、その目的は、その強度係数を最小化し得るように形状を改善した冷蔵庫の振動吸収用弾性部材を提供することにある。   The present invention is to solve the above-described problems, and an object of the present invention is to provide a vibration-absorbing elastic member for a refrigerator having an improved shape so that the strength coefficient can be minimized.

上記目的を達成するために、本発明による冷蔵庫の振動吸収用弾性部材は、圧縮機が装着され、該圧縮機による圧縮荷重を受ける軸方向支持部を有する中空状の圧縮機装着部と、該圧縮機装着部の下側に設けられて、該圧縮機装着部を支持し、前記圧縮機により圧縮荷重を受ける前記軸方向支持部の平均半径と異なる平均半径を有する中空状の基部と、を有して構成されることを特徴とする。   In order to achieve the above object, a vibration absorbing elastic member of a refrigerator according to the present invention includes a hollow compressor mounting portion having an axial support portion to which a compressor is mounted and which receives a compression load from the compressor, A hollow base provided on the lower side of the compressor mounting portion, which supports the compressor mounting portion and has an average radius different from the average radius of the axial support portion that receives a compressive load by the compressor; It is characterized by having.

前記基部は、その平均半径が前記軸方向支持部の平均半径より大きく形成されることを特徴とする。
前記基部は、その内径が前記軸方向支持部の内径より大きく、その外径が前記軸方向支持部の外径より大きいことを特徴とする。 The base portion may have an average radius larger than an average radius of the axial support portion.
The base portion has an inner diameter larger than an inner diameter of the axial support portion and an outer diameter larger than the outer diameter of the axial support portion.

前記基部は、一端が前記圧縮機装着部の下端に連結されて他端が外側に延在する上側基部と、一端が前記上側基部の他端に連結されて他端が下側に向けて延在する下側基部と、を有して構成されることを特徴とする。   The base has one end connected to the lower end of the compressor mounting portion and the other end extending outward, and one end connected to the other end of the upper base and the other end extending downward. And a lower base portion that is present.

前記基部は、その内周面及び外周面の少なくとも一方に設けられた少なくとも一つの環状溝を有して構成されることを特徴とする。
前記圧縮機装着部は、その内周面及び外周面の少なくとも一方に設けられた少なくとも一つの環状溝を有して構成されることを特徴とする。 The base portion includes at least one annular groove provided on at least one of an inner peripheral surface and an outer peripheral surface thereof.
The compressor mounting portion includes at least one annular groove provided on at least one of an inner peripheral surface and an outer peripheral surface thereof.

前記冷蔵庫の振動吸収用弾性部材は、一端が前記圧縮機装着部に連結され、他端が前記基部を支持する表面に向けて延在し、前記弾性部材の過度な変形を防止する補助支持部を更に有して構成されることを特徴とする。
該補助支持部は、前記一端が前記基部を支持する表面から所定距離離隔されるように構成されることを特徴とする。 The elastic member for absorbing vibration of the refrigerator has an auxiliary support portion that has one end connected to the compressor mounting portion and the other end extending toward a surface that supports the base, and prevents excessive deformation of the elastic member. It is characterized by further comprising.
The auxiliary support part is configured such that the one end is spaced apart from the surface supporting the base part by a predetermined distance.

前記基部は、その厚さが前記補助支持部より厚いことを特徴とする。
このように構成される冷蔵庫の振動吸収用弾性部材により前記圧縮機から発生する振動が効果的に減衰することで、前記冷蔵庫全体への振動伝達が顕著に減少する。 The base has a thickness greater than that of the auxiliary support.
The vibration generated from the compressor is effectively attenuated by the vibration absorbing elastic member of the refrigerator configured as described above, so that vibration transmission to the entire refrigerator is significantly reduced.

本発明の冷蔵庫の振動吸収用弾性部材には次のような効果がある。
第一に、前記圧縮機が装着される圧縮機装着部に作用する圧縮荷重の延長線が前記圧縮機装着部を支持する基部と同一線上にないので、圧縮機の振動による変形が大きくなることで、強度係数が小さくなり、冷蔵庫から発生する振動及び騒音が減少する。 The elastic member for vibration absorption of the refrigerator of the present invention has the following effects.
First, since the extension line of the compressive load acting on the compressor mounting portion on which the compressor is mounted is not collinear with the base supporting the compressor mounting portion, deformation due to vibration of the compressor is increased. Thus, the strength coefficient is reduced, and the vibration and noise generated from the refrigerator are reduced.

第二に、補助支持部が具備され、前記弾性部材の過度な変形と破損とが防止される。   Secondly, an auxiliary support portion is provided to prevent excessive deformation and breakage of the elastic member.

冷蔵庫は低温で飲食物を新鮮に貯蔵、保管又は冷凍する装置であって、該冷蔵庫は内部に冷蔵室と冷凍室とが形成され、該冷蔵室と冷凍室とを開閉するドアが具備された冷蔵庫本体と冷凍サイクルを形成する圧縮機等の各装置とを有して構成される。   The refrigerator is a device for freshly storing, storing or freezing food and drink at a low temperature. The refrigerator has a refrigerator compartment and a freezer compartment formed therein, and a door for opening and closing the refrigerator compartment and the freezer compartment is provided. It has a refrigerator body and each device such as a compressor forming a refrigeration cycle.

前記冷凍サイクルは、圧縮機による冷媒の圧縮行程と、該圧縮された冷媒が熱を放出する凝縮行程と、該凝縮行程を経た冷媒が低圧の状態に膨脹する膨脹行程と、冷蔵庫内部の熱を吸収して冷媒が蒸発する蒸発行程とから成る。   The refrigeration cycle includes a refrigerant compression process by a compressor, a condensation process in which the compressed refrigerant releases heat, an expansion process in which the refrigerant that has undergone the condensation process expands to a low pressure state, and heat in the refrigerator. And an evaporating process in which the refrigerant evaporates.

前記冷凍サイクルの圧縮行程は、低圧の冷媒を吸入して高圧で吐出する圧縮機から成り、前記圧縮機の駆動により、前記冷蔵庫の内部は所定温度以下の状態に維持される。   The compression stroke of the refrigeration cycle includes a compressor that sucks low-pressure refrigerant and discharges it at high pressure, and the inside of the refrigerator is maintained at a predetermined temperature or less by driving the compressor.

前記圧縮機は、冷蔵庫本体の所定位置に形成された機械室に設置され、前記冷凍サイクルを構成するために前記圧縮機が駆動する時には振動が発生し、この時に発生した振動は圧縮機に連結された各部品により冷蔵庫全体、特に底部に伝逹されることで、振動と騒音とが発生する。   The compressor is installed in a machine room formed at a predetermined position of the refrigerator main body, and vibration is generated when the compressor is driven to constitute the refrigeration cycle. The generated vibration is connected to the compressor. The transmitted parts are transmitted to the entire refrigerator, particularly the bottom, thereby generating vibration and noise.

このように圧縮機駆動時に発生する振動と騒音とを低減させるために、前記冷蔵庫には、前記圧縮機による振動を吸収する弾性部材を有する防振装置が設置される。   Thus, in order to reduce the vibration and noise generated when the compressor is driven, the refrigerator is provided with a vibration isolator having an elastic member that absorbs the vibration caused by the compressor.

以下、図４乃至図６を参照して、本発明による振動吸収用弾性部材の好ましい実施形態について説明する。
本発明による弾性部材を有する防振装置は、図４乃至図６に示したように、前記機械室の内部に設けられて、前記圧縮機が装着される中空状の弾性部材２００と、該弾性部材２００を固定するように、前記機械室の底部１００に下端が固定され、前記弾性部材２００の中空部を貫通して設けられたスタンド３００とを有して構成される。 Hereinafter, with reference to FIG. 4 thru | or FIG. 6, preferable embodiment of the elastic member for vibration absorption by this invention is described.
As shown in FIGS. 4 to 6, the vibration isolator having an elastic member according to the present invention is provided inside the machine room and has a hollow elastic member 200 on which the compressor is mounted, and the elastic member. A lower end is fixed to the bottom portion 100 of the machine room so as to fix the member 200, and a stand 300 provided through the hollow portion of the elastic member 200 is configured.

より詳細に説明すると、前記弾性部材２００は、垂直な軸方向に貫通する中空部を有してその水平断面が環状から成る部材であって、該弾性部材２００は前記圧縮機が装着される圧縮機装着部２１０と、該圧縮機装着部２１０の下方に一体に形成されて、該圧縮機装着部２１０を支持する基部２２０とを有して構成される。   More specifically, the elastic member 200 is a member having a hollow portion penetrating in a vertical axial direction and having a horizontal cross section formed in an annular shape, and the elastic member 200 is a compression to which the compressor is mounted. The machine mounting portion 210 and a base portion 220 that is integrally formed below the compressor mounting portion 210 and supports the compressor mounting portion 210 are configured.

前記圧縮機装着部２１０は、前記圧縮機の下部から延長される圧縮機足部が装着されるように、その上部外周面に形成される環状の圧縮機装着溝２１１と、該装着溝２１１の下方に設けられて、圧縮機による圧縮荷重を支持する軸方向支持部２１２とを有して構成される。   The compressor mounting portion 210 includes an annular compressor mounting groove 211 formed on an outer peripheral surface of the compressor so that a compressor foot extending from the lower portion of the compressor is mounted, and An axial support portion 212 that is provided below and supports a compression load by the compressor is configured.

ここで、前記基部２２０は、前記軸方向支持部２１２の平均半径と異なる平均半径を有するように構成され、該軸方向支持部２１２に作用する圧縮荷重の延長線上に位置しないように構成される。   Here, the base portion 220 is configured to have an average radius different from the average radius of the axial support portion 212 and is configured not to be positioned on an extension line of a compressive load acting on the axial support portion 212. .

前記基部２２０は、一端が前記軸方向支持部２１２の下端に連結されて、他端が外側に延在する水平方向の上側基部２２１と、上端が前記上側基部２２１の他端に連結されて、下端が前記機械室の底部１００に装着される垂直方向の下側基部２２２とを有して構成される。   The base 220 has one end connected to the lower end of the axial support portion 212, the other end connected to the horizontal upper base 221 extending outward, and the upper end connected to the other end of the upper base 221. The lower end has a vertical lower base 222 that is attached to the bottom 100 of the machine room.

即ち、前記下側基部２２２は、その平均半径が前記軸方向支持部２１２の平均半径より大きく構成されるために、前記圧縮機の荷重と振動とによる垂直方向の荷重に対し、前記基部２２０には曲げによる変形と圧縮による変形とが同時に発生するために、本発明による前記弾性部材２００は、その強度係数ｋが従来の弾性部材に比べて小さくなる。   That is, since the lower base 222 is configured to have an average radius larger than the average radius of the axial support portion 212, the lower base 222 is not affected by the vertical load due to the load and vibration of the compressor. Since deformation due to bending and deformation due to compression occur simultaneously, the elastic member 200 according to the present invention has a strength coefficient k smaller than that of a conventional elastic member.

本実施形態は、前記下側基部２２２の平均半径が前記軸方向支持部２１２の平均半径より大きい場合を開示しているが、前記下側基部２２２の平均半径を前記軸方向支持部の平均半径より小さく構成することもできる。即ち、前記軸方向支持部に加えられる垂直方向の圧縮荷重が作用する線上と、前記下側基部の平均半径の線上とが一致しないようにすれば、垂直方向の変形率が増加して強度係数を低くすることができる。   Although the present embodiment discloses a case where the average radius of the lower base 222 is larger than the average radius of the axial support 212, the average radius of the lower base 222 is set to the average radius of the axial support. It can also be made smaller. That is, if the line on which the vertical compressive load applied to the axial support part acts does not coincide with the line of the average radius of the lower base part, the vertical deformation rate increases and the strength coefficient increases. Can be lowered.

また、前記弾性部材２００が前記圧縮機の荷重と振動とにより縦方向に過度に変形されることを防止するために、前記弾性部材２００には、上端が前記弾性部材の中空の内壁に連結されて、下端が下方の前記基部２２０が装着される機械室の底部１００へ向けて延在する補助支持部２５０が設けられる。   In addition, in order to prevent the elastic member 200 from being excessively deformed in the vertical direction due to the load and vibration of the compressor, the elastic member 200 has an upper end connected to a hollow inner wall of the elastic member. Thus, an auxiliary support 250 is provided that extends toward the bottom 100 of the machine room to which the base 220 with the lower end is attached.

ここで、該補助支持部２５０の下端は、前記機械室の底部１００から所定距離離隔されるように設けられることが望ましく、前記補助支持部２５０の厚さは、前記下側基部２２２の厚さより薄い方が好ましい。   Here, the lower end of the auxiliary support part 250 is preferably provided at a predetermined distance from the bottom part 100 of the machine room. The thickness of the auxiliary support part 250 is greater than the thickness of the lower base part 222. A thinner one is preferred.

このような構成によって、前記圧縮機装着部２１０と前記基部２２０とが前記圧縮機の荷重と振動とにより縦方向に所定量変形されると、前記補助支持部２５０の下端が前記機械室の底部１００に接触し、前記補助支持部２５０が前記圧縮機による荷重を支持することにより前記弾性部材２００の過度な変形を防止する。   With this configuration, when the compressor mounting portion 210 and the base portion 220 are deformed by a predetermined amount in the longitudinal direction due to the load and vibration of the compressor, the lower end of the auxiliary support portion 250 is the bottom portion of the machine chamber. 100, and the auxiliary support part 250 supports the load by the compressor, thereby preventing excessive deformation of the elastic member 200.

このように構成された本発明による弾性部材２００は、さらに小さい強度係数を有するようにすると同時に、前記圧縮機の荷重を１次的に吸収し得るように、前記圧縮機装着部２１０の内周面と外周面とにジグザグに形成される環状の各溝２１３、２１４を更に有して構成されることが好ましい。   The elastic member 200 according to the present invention configured as described above has an even smaller strength coefficient, and at the same time, the inner circumference of the compressor mounting portion 210 so that the load of the compressor can be absorbed first. It is preferable to further include annular grooves 213 and 214 formed in a zigzag manner on the surface and the outer peripheral surface.

勿論、前記環状の各溝は、前記基部２２０の内周面と外周面とにも形成することができる。即ち、前記中空状弾性部材は、その内外周面にジグザグに形成される少なくとも一つの環状溝を有するために、その強度係数がさらに減少するようになる。   Of course, the annular grooves may be formed on the inner and outer peripheral surfaces of the base 220. That is, since the hollow elastic member has at least one annular groove formed in a zigzag manner on the inner and outer peripheral surfaces thereof, the strength coefficient is further reduced.

一方、前記弾性部材の固定のために提供される前記スタンド３００の下側の所定位置には環状の挿入溝３１０が形成され、該挿入溝３１０に対応する前記弾性部材の内周面には前記スタンド３００の挿入溝３１０に挿入される固定突起２３０が形成される。   Meanwhile, an annular insertion groove 310 is formed at a predetermined position on the lower side of the stand 300 provided for fixing the elastic member, and the inner circumferential surface of the elastic member corresponding to the insertion groove 310 has the A fixing protrusion 230 to be inserted into the insertion groove 310 of the stand 300 is formed.

本発明による弾性部材においては、前記固定突起２３０は前記補助支持部２５０の内側面に形成される。そして、前記弾性部材の上端には中心へ向けて突出して前記スタンドの上部に接触する支持突起２４０が形成される。即ち、前記固定突起２３０が前記挿入溝３１０に挿入され、前記支持突起２４０が前記スタンド３００の上部外周面により支持されることで、前記弾性部材が固定される。   In the elastic member according to the present invention, the fixing protrusion 230 is formed on the inner surface of the auxiliary support portion 250. A support protrusion 240 that protrudes toward the center and contacts the upper portion of the stand is formed at the upper end of the elastic member. That is, the elastic protrusion is fixed by inserting the fixing protrusion 230 into the insertion groove 310 and supporting the support protrusion 240 by the upper outer peripheral surface of the stand 300.

このように構成された本発明による弾性部材が前記圧縮機により発生する振動を減衰させる過程に関し、図６を参照して説明する。
前記圧縮機が装着されると、前記弾性部材の内外周面に形成された環状の各溝２１３、２１４が前記圧縮機の静荷重を１次的に吸収する。 A process in which the elastic member according to the present invention configured as described above attenuates vibrations generated by the compressor will be described with reference to FIG.
When the compressor is mounted, the annular grooves 213 and 214 formed on the inner and outer peripheral surfaces of the elastic member primarily absorb the static load of the compressor.

次に前記圧縮機が作動すると、前記圧縮機の装着溝２１１の下部に設けられた軸方向支持部２１２は垂直方向の圧縮荷重を受けるようになり、前記下側基部２２２は前記圧縮荷重の作用線上にないために、本発明による防振装置２００は圧縮荷重と曲げ荷重とを同時に受けて、同一な荷重に対する変形が従来に比較して一層大きくなり、結局、剛性が低くなるという効果を得る。   Next, when the compressor is operated, the axial support portion 212 provided at the lower portion of the mounting groove 211 of the compressor receives a compressive load in the vertical direction, and the lower base portion 222 acts by the compressive load. Since the anti-vibration device 200 according to the present invention is subjected to the compressive load and the bending load at the same time, the deformation with respect to the same load is further increased as compared with the conventional case, and the rigidity is eventually reduced. .

従って、f=(1/2π)(k/m)1/2として表現されるシステムの固有振動数において、強度係数を示すｋ値が小さくなるため、固有振動数は小さくなり、図３に示したように、前記固有振動数が小さくなると、周波数比が増加し、底部への振動伝達率が低くなることにより、振動及び騒音が減少する。 Therefore, in the natural frequency of the system expressed as f = (1 / 2π) (k / m) 1/2 , the k value indicating the strength coefficient is small, so the natural frequency is small and is shown in FIG. As described above, when the natural frequency is decreased, the frequency ratio is increased, and the vibration transmissibility to the bottom is decreased, thereby reducing vibration and noise.

一方、前記圧縮機により前記弾性部材２００に所定の大きさ以上の変形が発生すると、前記補助支持部２５０の下端が前記機械室の底部１００に接触し、前記弾性部材の過度な変形及び破損を防止する。
このように構成された振動吸収用弾性部材は、前記冷蔵庫だけでなく、駆動中に振動が発生する他の一般的な振動装置の振動減衰にも適用が可能であることは上述した説明から自明のことである。 On the other hand, when the elastic member 200 is deformed to a predetermined size or more by the compressor, the lower end of the auxiliary support part 250 comes into contact with the bottom part 100 of the machine room, and excessive deformation and breakage of the elastic member are caused. To prevent.
It is obvious from the above description that the vibration-absorbing elastic member configured in this way can be applied not only to the refrigerator but also to vibration attenuation of other general vibration devices that generate vibration during driving. That is.

冷蔵庫機械室の内部に圧縮機が設置された状態を概略的に示した図である。It is the figure which showed the state in which the compressor was installed in the inside of a refrigerator machine room. 従来の弾性部材を示した断面図である。It is sectional drawing which showed the conventional elastic member. 周波数比に対する底面への振動伝逹率を示したグラフである。It is the graph which showed the vibration transmission rate to the bottom to frequency ratio. 本発明による弾性部材を示した斜視図である。It is the perspective view which showed the elastic member by this invention. 本発明による弾性部材を示した断面図である。It is sectional drawing which showed the elastic member by this invention. 本発明による弾性部材の変形状態を示した断面図である。It is sectional drawing which showed the deformation | transformation state of the elastic member by this invention.

符号の説明Explanation of symbols

１００ 機械室の底部
２００ 弾性部材
２１０ 圧縮機装着部
２１１ 圧縮機装着溝
２１２ 軸方向支持部
２２０ 基部
２３０ 固定突起
２４０ 支持突起
２５０ 補助支持部 DESCRIPTION OF SYMBOLS 100 Machine room bottom part 200 Elastic member 210 Compressor mounting part 211 Compressor mounting groove 212 Axial support part 220 Base part 230 Fixing protrusion 240 Support protrusion 250 Auxiliary support part

Claims (8)

圧縮機が装着されて、該圧縮機による圧縮荷重を受ける軸方向支持部を有する中空状の圧縮機装着部と、該圧縮機装着部の下側に設けられて該圧縮機装着部を支持し、前記圧縮機によって圧縮荷重を受ける前記軸方向支持部の平均半径と異なる平均半径を有する中空状の基部と、一端が前記圧縮機装着部に連結され、他端が前記基部が装着される表面へ向けて延在し、前記弾性部材の過度な変形を防止する補助支持部と、前記基部が装着される前記表面に固定されて、中空状の前記圧縮機装着部及び中空状の前記基部とが垂直な軸方向に貫通するスタンドと、前記補助支持部の内側面に形成されて前記スタンドの挿入溝に挿入される固定突起と、を有して構成されることを特徴とする振動吸収用弾性部材。 A hollow compressor mounting portion having an axial support portion to which a compressor is mounted and receiving a compression load by the compressor, and a compressor mounting portion provided below the compressor mounting portion to support the compressor mounting portion. A hollow base portion having an average radius different from an average radius of the axial support portion that receives a compressive load by the compressor, and a surface on which one end is connected to the compressor mounting portion and the other end is mounted on the base portion An auxiliary support portion that extends toward the surface and prevents excessive deformation of the elastic member, and is fixed to the surface on which the base portion is mounted, and the hollow compressor mounting portion and the hollow base portion For vibration absorption , comprising: a stand penetrating in a vertical axial direction; and a fixing projection formed on an inner surface of the auxiliary support portion and inserted into an insertion groove of the stand . Elastic member. 前記基部は、その平均半径が前記軸方向支持部の平均半径より大きいことを特徴とする請求項１記載の振動吸収用弾性部材。   The vibration-absorbing elastic member according to claim 1, wherein an average radius of the base portion is larger than an average radius of the axial support portion. 前記基部は、その内径が前記軸方向支持部の内径より大きく、外径が前記軸方向支持部の外径より大きいことを特徴とする請求項１記載の振動吸収用弾性部材。   2. The vibration-absorbing elastic member according to claim 1, wherein the base portion has an inner diameter larger than an inner diameter of the axial support portion and an outer diameter larger than the outer diameter of the axial support portion. 前記基部は、一端が前記圧縮機装着部の下端に連結され、他端が外側に延在する上側基部と、一端が前記上側基部の他端に連結され、他端が下方へ向けて延在する下側基部とを有して構成されることを特徴とする請求項１記載の振動吸収用弾性部材。 The base has one end connected to the lower end of the compressor mounting portion, the other end extending outward, one end connected to the other end of the upper base , and the other end extending downward. The elastic member for vibration absorption according to claim 1, further comprising a lower base portion. 前記基部は、その内周面と外周面との少なくとも一方に形成される少なくとも一つの環状溝を有して構成されることを特徴とする請求項１記載の振動吸収用弾性部材。   2. The vibration absorbing elastic member according to claim 1, wherein the base has at least one annular groove formed on at least one of an inner peripheral surface and an outer peripheral surface thereof. 前記圧縮機装着部は、その内周面と外周面との少なくとも一方に形成される少なくとも一つの環状溝を有して構成されることを特徴とする請求項１記載の振動吸収用弾性部材。   2. The vibration-absorbing elastic member according to claim 1, wherein the compressor mounting portion includes at least one annular groove formed on at least one of an inner peripheral surface and an outer peripheral surface thereof. 前記補助支持部は、前記一端が前記基部を支持する表面から所定距離離隔されるように形成されることを特徴とする請求項１記載の振動吸収用弾性部材。 2. The vibration-absorbing elastic member according to claim 1 , wherein the auxiliary support portion is formed such that the one end is separated from a surface supporting the base portion by a predetermined distance . 前記基部は、厚さが前記補助支持部より厚いことを特徴とする請求項１記載の振動吸収用弾性部材。 The vibration-absorbing elastic member according to claim 1, wherein the base portion is thicker than the auxiliary support portion .
JP2004247101A 2003-11-13 2004-08-26 Elastic member for vibration absorption of refrigerator Expired - Fee Related JP4034767B2 (en)

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CN1291202C (en) 2006-12-20
JP2005147128A (en) 2005-06-09

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