JPH0452482A

JPH0452482A - Refrigerator

Info

Publication number: JPH0452482A
Application number: JP15983890A
Authority: JP
Inventors: Hitoshi Maruyama; 等丸山
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1990-06-20
Filing date: 1990-06-20
Publication date: 1992-02-20

Abstract

PURPOSE:To reduce any noise generated from a refrigerator body by providing a muffler for reducing the vibration of a refrigerant upon the same being discharge a refrigerant discharging piping in a freezing circuit connected to a compressor and to at least a refrigerant discharge piping among refrigerant suction and discharge pipings. CONSTITUTION:A refrigerant discharge piping 8 is provided in a refrigerant circuit, to which piping 8 there is connected a refrigerant discharge space 11 partly serving to resiliently support internal trim parts of a compressor 1. A muffler 20 is provided on the refrigerant discharge piping 8. In the title refrigerator, a refrigerator compressed by a compression element in the compressor 1 is directly discharged to the refrigerant discharge piping 8 in the refrigerant circuit via the internal trim discharge space 11, so that any vibration caused by the discharged refrigerant is transmitted to the refrigerant circuit. Thus, the vibration transmitted to a refrigerator body while being attenuated by a muffler 20 provided on the refrigerant discharge piping 8 is reduced, and hence noise is suppressed.

Description

【発明の詳細な説明】［産業上の利用分野］この発明は、密閉容器内に電動要素と圧縮要素とを、弾
力的に支持させた圧縮機を、冷媒回路中に設けた冷蔵庫
におけるその低騒音対策に関するものである。Detailed Description of the Invention [Field of Industrial Application] This invention relates to a refrigerator in which a compressor in which an electric element and a compression element are elastically supported in a closed container is installed in a refrigerant circuit. This concerns noise countermeasures.

［従来の技術］第３図は例えば特開平１−１０７０７７号公報に示され
た従来の冷蔵庫の冷媒回路図であり、図において（１）
は高圧シェルを有する圧縮機、（２）は凝縮器、（３）
は絞り部、（４）は蒸発器、（５）はアキュムレータ、
（６）はマフラー、（７）はこのマフラー（６）と圧縮
機（１）とを接続する冷媒吸入配管、（８）は圧縮機（
１）と凝縮器（２）とを接続する冷媒吐出配管である。[Prior Art] FIG. 3 is a refrigerant circuit diagram of a conventional refrigerator disclosed in, for example, Japanese Patent Application Laid-Open No. 1-107077, and in the figure (1)
is a compressor with a high pressure shell, (2) is a condenser, (3)
is the throttle part, (4) is the evaporator, (5) is the accumulator,
(6) is a muffler, (7) is a refrigerant suction pipe that connects this muffler (6) and compressor (1), and (8) is a compressor (
1) and the condenser (2).

第４図は上記圧縮機の垂直断面図であり、図において（
９）は密閉容器、　（１０）は中吊りばね、（１１）は
冷媒の吐出管、（１２）は内部容器、（１３）はクラン
ク軸、（１４）はロータ、（１５）はステータ、（１６
）はシリンダ、（１７）は外軸受、（１８）は内軸受、
（１９）は冷媒の吸入管である。また（１０１）は圧縮
要素、（１０２）は電動要素である。FIG. 4 is a vertical sectional view of the compressor, and in the figure (
9) is a closed container, (10) is a suspended spring, (11) is a refrigerant discharge pipe, (12) is an internal container, (13) is a crankshaft, (14) is a rotor, (15) is a stator, ( 16
) is the cylinder, (17) is the outer bearing, (18) is the inner bearing,
(19) is a refrigerant suction pipe. Further, (101) is a compression element, and (102) is an electric element.

上記構成において電動要素（１０２）で発生した回転力
は、クランク軸（１３）を介して圧縮要素（１０１）に
伝えられ、可撓性を有する冷媒の吸入管（１９）を介し
てシリンダ（１６）内へ吸入された冷媒を圧縮する。圧
縮された冷媒は上記吸入管よりばね定数の大きな吐出管
（１１）を介して上記冷媒回路中に吐出される。In the above configuration, the rotational force generated by the electric element (102) is transmitted to the compression element (101) via the crankshaft (13), and is transmitted to the cylinder (16) via the flexible refrigerant suction pipe (19). ) compresses the refrigerant sucked into the The compressed refrigerant is discharged into the refrigerant circuit through a discharge pipe (11) having a larger spring constant than the suction pipe.

この際電動要素および圧縮要素より発生した振動は、上
記の中吊りばね（１０）および吐出管（１１）により低
減される。なお上記の吸入管（１９）は可撓性を有し、
上記中吊りばね（１０）や吐出管（１１）のばね定数よ
り小さなばね定数を有するため、上記中吊りばね（１０
）および吐出管（１１）による防振効果に与える悪影響
はない。At this time, vibrations generated by the electric element and the compression element are reduced by the above-mentioned hanging spring (10) and discharge pipe (11). In addition, the above-mentioned suction pipe (19) has flexibility,
Since it has a spring constant smaller than that of the middle hanging spring (10) and the discharge pipe (11), the middle hanging spring (10)
) and the discharge pipe (11) have no adverse effect on the vibration damping effect.

［発明が解決しようとする課題］従来の圧縮機は以上のように構成され、これが冷媒回路
中の冷媒吸入配管（７）と冷媒吐出配管（８）との間に
設けられているので、冷媒の吐出時におけるその振動が
減少することなく冷媒吐出配管（８）へ伝達され、騒音
が大きくなるという問題点があった・この発明は上記の問題点を解消するためになされたもの
で、少なくとも圧縮機に接続された冷媒回路中の冷媒吐
出配管に対し、冷媒の吐出時の振動を減衰させるための
マフラーを付設させて冷蔵庫本体から放出される騒音を
低減させることを目的とする。[Problems to be Solved by the Invention] The conventional compressor is configured as described above, and is provided between the refrigerant suction pipe (7) and the refrigerant discharge pipe (8) in the refrigerant circuit, so that the refrigerant There was a problem in that the vibration during discharge of the refrigerant was transmitted to the refrigerant discharge pipe (8) without being reduced, increasing the noise. This invention was made to solve the above problem, and at least The purpose is to reduce the noise emitted from the refrigerator body by attaching a muffler to the refrigerant discharge pipe in the refrigerant circuit connected to the compressor to damp vibrations when the refrigerant is discharged.

［課題を解決するための手段］この発明に係る冷蔵庫では、圧縮機の内装品を弾力的に
支持する役目の一半を荷う冷媒の吐出管に接続されてい
る冷媒回路中の少なくとも冷媒吐出配管にマフラーを付
設している。[Means for Solving the Problems] In the refrigerator according to the present invention, at least the refrigerant discharge pipe in the refrigerant circuit that is connected to the refrigerant discharge pipe that plays a part of the role of elastically supporting the interior components of the compressor. A muffler is attached to the.

［作　用コこの発明における冷蔵庫では、圧縮機から冷媒吐出配管
に伝達される冷媒の吐出時の振動が、この冷媒吐出配管
に付設されたマフラーにより減衰される。[Function] In the refrigerator according to the present invention, vibrations transmitted from the compressor to the refrigerant discharge pipe when the refrigerant is discharged are attenuated by the muffler attached to the refrigerant discharge pipe.

［実施例コ以下この発明の一実施例について説明する。すなわち第
１図において第３図および第４図のものと同一個所には
同一符号を付してその重複説明は省略することにするが
、この発明の冷蔵庫においては、特に圧縮機（１）の内
装品を弾力的に支持する役目の一半を荷う冷媒の吐出管
（１１）が接続される冷媒回路中の冷媒吐出配管（８）
に、マフラー（２０）を付設させて圧縮機（１）から冷
媒吐出配管（８）に伝達される吐出冷媒による振動を低
減させている点に特徴を有するものである。[Example 1] An example of the present invention will be described below. That is, in FIG. 1, parts that are the same as those in FIGS. 3 and 4 are given the same reference numerals, and redundant explanation thereof will be omitted. Refrigerant discharge pipe (8) in the refrigerant circuit to which the refrigerant discharge pipe (11), which plays a part of the role of elastically supporting interior components, is connected.
The present invention is characterized in that a muffler (20) is attached to reduce vibrations caused by the discharged refrigerant transmitted from the compressor (1) to the refrigerant discharge pipe (8).

したがってこの発明の冷蔵庫では圧縮機（１）内の圧縮
要素で圧縮された冷媒は内装の吐出管（１１）を介して
冷媒回路中の冷媒吐出配管（８）に直接吐出されるため
、吐出冷媒による振動もそのまま冷媒吐出配管（８）に
伝達されることになるが、この冷媒吐出配管（８）に設
けたマフラー（２０）により減衰されて冷蔵庫本体に伝
達される振動が低減され騒音が抑制されることになる。Therefore, in the refrigerator of this invention, the refrigerant compressed by the compression element in the compressor (1) is directly discharged to the refrigerant discharge pipe (8) in the refrigerant circuit via the internal discharge pipe (11), so that the discharge refrigerant The vibrations caused by the refrigerator are also transmitted as they are to the refrigerant discharge pipe (8), but the muffler (20) provided on the refrigerant discharge pipe (8) attenuates the vibrations transmitted to the refrigerator body and suppresses noise. will be done.

また第２図は冷媒回路中の冷媒吸入配管（７）にもマフ
ラー（６）を付設したこの発明の他の実施例を示す冷媒
回路図である。すなわち圧縮機（１）内に設けられた冷
媒の吸入管（１９）は可撓性のものであり、上記吐出管
（１１）のように内装品の弾力支持の役目をするもので
はなく、また冷媒の吸入時における振動も小さいもので
はあるが、皆無ではないのでそれが冷媒回路中の冷媒吸
入配管（７）に伝達された場合の騒音を低減するように
同様のマフラー（６）を付設させているものである。FIG. 2 is a refrigerant circuit diagram showing another embodiment of the present invention in which a muffler (6) is also attached to a refrigerant suction pipe (7) in the refrigerant circuit. That is, the refrigerant suction pipe (19) provided in the compressor (1) is flexible and does not serve as elastic support for internal components like the discharge pipe (11) described above. Although the vibration during suction of the refrigerant is small, it is not completely absent, so a similar muffler (6) is attached to reduce the noise when the vibration is transmitted to the refrigerant suction pipe (7) in the refrigerant circuit. It is something that

［発明の効果］この発明の冷蔵庫は以上のように構成されているので、
圧縮機に生じた冷媒の特に吐出時の振動の冷媒回路中の
冷媒吐出配管への伝達による騒音を、この冷媒吐出配管
に設けたマフラーで低減でき、また冷媒の吸入時の振動
による騒音も冷媒吸入配管にマフラーを付設することに
より低減できるものである。[Effect of the invention] Since the refrigerator of this invention is configured as described above,
A muffler installed in the refrigerant discharge pipe can reduce the noise caused by the vibration of the refrigerant generated in the compressor, especially when it is discharged, and is transmitted to the refrigerant discharge pipe in the refrigerant circuit.The noise caused by the vibration when the refrigerant is sucked can also be reduced by the refrigerant. This can be reduced by attaching a muffler to the suction pipe.

[Brief explanation of the drawing]

第１図はこの発明の冷蔵庫の一実施例を示す冷媒回路図
、第２図はこの発明の他の実施例を示す冷媒回路図、第
３図は従来の冷蔵庫を示す冷媒回路図、第４図はこの発
明のものを含めた従来の圧縮機を示す垂直断面図である
。なお図中（１）は圧縮機、（７）は冷媒吸入配管、（８
）は冷媒吐出配管、（１０）は中吊りばね、（１１）は
吐出管、（２０）はマフラー、（１０１）は圧縮要素、
（１０２）は電動要素である。その他図中同−符号は同一部分を示すものとす第１′Ｘ１第図FIG. 1 is a refrigerant circuit diagram showing one embodiment of the refrigerator of the present invention, FIG. 2 is a refrigerant circuit diagram showing another embodiment of the invention, FIG. 3 is a refrigerant circuit diagram showing a conventional refrigerator, and FIG. The figure is a vertical sectional view showing a conventional compressor including one of the present invention. In the figure, (1) is the compressor, (7) is the refrigerant suction pipe, and (8) is the compressor.
) is the refrigerant discharge pipe, (10) is the suspended spring, (11) is the discharge pipe, (20) is the muffler, (101) is the compression element,
(102) is an electric element. The same symbols in other figures indicate the same parts.

Claims

[Claims]

A compression element and an electric element that drives the compression element are suspended by a spring;
In a refrigerator in which a refrigerant circuit includes a compressor elastically supported in a closed container by a refrigerant discharge pipe connected to the compression element, a refrigerant suction pipe in the refrigeration circuit connected to the compressor; A refrigerator characterized in that at least one of the refrigerant discharge pipes is provided with a muffler for reducing vibrations when the refrigerant is discharged.