JPH0693970A - Closed compressor - Google Patents

Closed compressor

Info

Publication number
JPH0693970A
JPH0693970A JP4246279A JP24627992A JPH0693970A JP H0693970 A JPH0693970 A JP H0693970A JP 4246279 A JP4246279 A JP 4246279A JP 24627992 A JP24627992 A JP 24627992A JP H0693970 A JPH0693970 A JP H0693970A
Authority
JP
Japan
Prior art keywords
branch pipe
pipe
closed container
suction
compression element
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.)
Granted
Application number
JP4246279A
Other languages
Japanese (ja)
Other versions
JP3119947B2 (en
Inventor
Akio Yagi
章夫 八木
Ichiro Morita
一郎 森田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Refrigeration Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Refrigeration Co filed Critical Matsushita Refrigeration Co
Priority to JP04246279A priority Critical patent/JP3119947B2/en
Publication of JPH0693970A publication Critical patent/JPH0693970A/en
Application granted granted Critical
Publication of JP3119947B2 publication Critical patent/JP3119947B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Branch Pipes, Bends, And The Like (AREA)

Abstract

PURPOSE:To prevent a liquid refrigerant and overheated and expanded refrigerant gas from being sucked in a compression element by disposing a suction pipe for refrigerant gas, comprising at least three branch pipes, in a closed container and opening one branch pipe to the interior of lube oil in the closed container. CONSTITUTION:When, at the interior of a closed container 1, a compression element 2 is driven by a motor-operated element 3, after refrigerant gas is sucked to a suction muffler 10 through an insertion pipe 9 by means of a suction pipe 5, it is introduced through a cylinder head 4 to a compression element 2 for compression. In this case, the suction pipe 5 comprises a first branch pipe 6 connected to the outside of the closed container 1, a second branch pipe 8 connected to the closely wound spring 10 of the insertion pipe 9, and a third branch pipe 7 having one end 7a opened in lube oil 12 in the closed container 1. This constitution causes prevention of a liquid refrigerant from being sucked in the compression element 2 and suppression of suction of heated and expanded refrigerant gas in the closed container 1 by the compression element 2, resulting in improvement of volume efficiency.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は冷蔵庫,エアコンディシ
ョナ等に使用される密閉型圧縮機に関するものであり、
特に密閉容器内の吸入管に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor used in refrigerators, air conditioners, etc.
Particularly, it relates to a suction pipe in a closed container.

【0002】[0002]

【従来の技術】近年、密閉型圧縮機(以下圧縮機とい
う)はエネルギー効率の高いものが求められ、そのため
の吸入方式としてダイレクトサクション方式がある。こ
の従来技術としては、例えば実開昭52−170307
号公報に示される。
2. Description of the Related Art In recent years, a hermetic compressor (hereinafter referred to as "compressor") is required to have high energy efficiency, and there is a direct suction system as a suction system for that purpose. As this prior art, for example, Japanese Utility Model Laid-Open No. 52-170307
It is shown in the publication.

【0003】以下図面を参照しながら、上述した従来の
吸入方式の一例について説明する。図6は従来の圧縮機
の縦断面図である。1は密閉容器、2は密閉容器1内に
弾性支持された圧縮要素、3は圧縮要素2の上部に配設
された電動要素、4は圧縮要素2を構成するシリンダー
ヘッドである。9は挿入管、11は吸入マフラーで挿入
管9が挿入されている。
An example of the above-mentioned conventional inhalation system will be described below with reference to the drawings. FIG. 6 is a vertical sectional view of a conventional compressor. Reference numeral 1 is a closed container, 2 is a compression element elastically supported in the closed container 1, 3 is an electric element disposed above the compression element 2, and 4 is a cylinder head constituting the compression element 2. Reference numeral 9 is an insertion tube, and 11 is a suction muffler into which the insertion tube 9 is inserted.

【0004】12は潤滑油、13は一端が吸入マフラー
内に開口し、他端が潤滑油12中に開口したオイルキャ
ピラリ、14はバネ性を有する鋼帯、15は吸入マフラ
ー11とオイルキャピラリ13を同時に、バネ性を有す
る鋼帯14を介し、固定する固定用ボルトである。
Reference numeral 12 is a lubricating oil, 13 is an oil capillary having one end opened in the suction muffler and the other end is opened in the lubricating oil 12, 14 is a steel strip having a spring property, and 15 is a suction muffler 11 and the oil capillary 13. At the same time, it is a fixing bolt for fixing through the steel strip 14 having a spring property.

【0005】22は密閉容器1内で複数に分岐した吸入
管であり、1つの分岐端22aは圧縮要素2に連通し、
1つの分岐端22bは密閉容器1外に連通し、1つの分
岐端22cは密閉容器1内の空間に開口している。
Reference numeral 22 denotes a suction pipe branched into a plurality of parts in the closed container 1, and one branch end 22a communicates with the compression element 2.
One branch end 22b communicates with the outside of the closed container 1, and one branch end 22c opens into the space inside the closed container 1.

【0006】以上のように構成された圧縮機について、
以下その動作を説明する。電動要素3によって駆動され
る圧縮要素2には外部冷却回路(図示せず)から冷媒ガ
スが吸入管22の分岐端22bから入り、分岐端22
a、挿入管9を介し吸入マフラー11内へ吸い込まれ
る。この冷媒ガスはシリンダーヘッド4内へ導かれた
後、圧縮要素2内へ導かれ圧縮される。
Regarding the compressor configured as described above,
The operation will be described below. Refrigerant gas enters the compression element 2 driven by the electric element 3 from an external cooling circuit (not shown) from the branch end 22b of the suction pipe 22,
a, It is sucked into the suction muffler 11 through the insertion tube 9. This refrigerant gas is introduced into the cylinder head 4 and then introduced into the compression element 2 and compressed.

【0007】また、吸入管22の分岐端22bから吸い
込まれた冷媒ガスの一部は、吸入管22の1つの分岐端
22cから密閉容器1内に放出され、電動要素3等の冷
却を行い信頼性向上を図っている。また、吸入管22か
ら液冷媒が吸い込まれた際には、液冷媒を吸入管22の
1つの分岐端22cから排出するように、密閉容器1空
間に開口されている。
Further, a part of the refrigerant gas sucked from the branch end 22b of the suction pipe 22 is discharged into the closed container 1 from one branch end 22c of the suction pipe 22, cools the electric element 3 and the like, and is reliable. We are trying to improve the sex. Further, when the liquid refrigerant is sucked from the suction pipe 22, the closed container 1 is opened so that the liquid refrigerant is discharged from one branch end 22 c of the suction pipe 22.

【0008】[0008]

【発明が解決しようとする課題】しかしながら上記従来
の構成では、吸入管の1つの分岐端が密閉容器内空間に
開口されているため、密閉容器空間内の加熱され膨脹し
た冷媒ガスの1部が吸入管内に吸い込まれ、この分岐端
から密閉容器内の加熱された冷媒ガスの吸い込みを低減
させるために分岐管の開口端を絞ると、この分岐端から
液冷媒を容易に排出することが困難になるとの問題を有
していた。
However, in the above-mentioned conventional configuration, since one branch end of the suction pipe is opened to the space inside the closed container, a part of the heated and expanded refrigerant gas in the space inside the closed container will be discharged. If the opening end of the branch pipe is sucked into the suction pipe to reduce the suction of the heated refrigerant gas in the closed container from this branch end, it becomes difficult to easily discharge the liquid refrigerant from this branch end. I had a problem.

【0009】本発明は上記従来の課題を解決するもの
で、液冷媒が圧縮要素に吸い込まれることなく吸入管か
ら密閉容器内に排出するとともに、密閉容器内の加熱さ
れ膨脹した冷媒ガスが吸入管に吸い込まれ、圧縮要素に
供給されることを低減することを目的とする。
The present invention solves the above-mentioned conventional problems. The liquid refrigerant is discharged from the suction pipe into the closed container without being sucked by the compression element, and the heated and expanded refrigerant gas in the closed container is drawn into the suction pipe. It is intended to reduce that which is sucked into and supplied to the compression element.

【0010】また、上記従来の構成では、分岐管が銅パ
イプで構成されているため、潤滑油の熱が銅パイプに伝
わり冷媒ガスの温度が上昇するとの問題を有していた。
Further, in the above conventional structure, since the branch pipe is made of a copper pipe, there is a problem that the heat of the lubricating oil is transmitted to the copper pipe and the temperature of the refrigerant gas rises.

【0011】本発明は上記従来の課題を解決するもの
で、分岐管に潤滑油の熱が伝わることを防止することを
目的とする。
The present invention solves the above-mentioned conventional problems, and an object thereof is to prevent the heat of the lubricating oil from being transmitted to the branch pipe.

【0012】また、さらに、上記従来の構成では、吸入
管が1箇所から同程度の管通路断面積をもつ複数の管に
分岐されているため、液冷媒のほとんどが圧縮要素内に
吸い込まれ、バルブ破損等による信頼性の低下や、吸入
管内の圧力脈動が大きいとの問題も有していた。
Further, in the above-mentioned conventional structure, since the suction pipe is branched from one place into a plurality of pipes having the same pipe passage sectional area, most of the liquid refrigerant is sucked into the compression element, There are also problems that reliability is deteriorated due to valve breakage and pressure pulsation in the suction pipe is large.

【0013】本発明は上記従来の課題を解決するもの
で、液冷媒が圧縮要素内に吸い込まれることを確実に防
止でき、バルブの破損等の信頼性に係わる問題を解決
し、また吸入管内の圧力脈動の低減を図ることを目的と
する。
The present invention solves the above-mentioned problems of the prior art by reliably preventing the liquid refrigerant from being sucked into the compression element, solving a reliability-related problem such as breakage of the valve, and preventing the liquid refrigerant from being sucked into the suction pipe. The purpose is to reduce pressure pulsation.

【0014】[0014]

【課題を解決するための手段】上記課題を解決するため
に本発明の圧縮機は、密閉容器内で少なくとも3つの分
岐管により構成される吸入管のうち、第1分岐管が密閉
容器外に連通し、第2分岐管が吸入マフラーに連通し、
第3分岐管が潤滑油中に開口したものである。
In order to solve the above-mentioned problems, a compressor according to the present invention has a suction pipe constituted by at least three branch pipes in a closed container, wherein a first branch pipe is located outside the closed container. Communication, the second branch pipe communicates with the suction muffler,
The third branch pipe is opened in the lubricating oil.

【0015】また、第2分岐管を密着巻のコイルスプリ
ングとしたものである。また、一端が潤滑油中に開口し
た第3分岐管を熱伝導性の低い材料で構成したものであ
る。
Further, the second branch pipe is a coil spring closely wound. Further, the third branch pipe whose one end is opened in the lubricating oil is made of a material having low thermal conductivity.

【0016】また、さらに、複数の分岐管を分岐管の通
路断面積より大なる断面積を有したタンクを介して連結
したものである。
Further, a plurality of branch pipes are connected via a tank having a cross-sectional area larger than the passage cross-sectional area of the branch pipes.

【0017】[0017]

【作用】本発明は上記した構成により、液冷媒を圧縮要
素に吸い込まれることなく密閉容器内に排出するととも
に、密閉容器空間内の加熱され膨脹した冷媒ガスが吸入
管内に吸い込まれ圧縮要素に吸い込まれることを低減で
きる。
According to the present invention, the liquid refrigerant is discharged into the closed container without being sucked into the compression element, and the heated and expanded refrigerant gas in the closed container space is sucked into the suction pipe and sucked into the compression element. Can be reduced.

【0018】また、吸入管の加熱を最小限に抑え吸入管
内を流れる冷媒ガスの温度上昇を防止できる。
Further, the heating of the suction pipe can be minimized and the temperature rise of the refrigerant gas flowing in the suction pipe can be prevented.

【0019】また、さらに、液冷媒が圧縮要素に吸い込
まれることを確実に防止できるとともに、吸入管内にお
ける圧力脈動を防止できる。
Further, it is possible to reliably prevent the liquid refrigerant from being sucked into the compression element and to prevent pressure pulsation in the suction pipe.

【0020】[0020]

【実施例】以下本発明の第1の実施例の吸入管について
図面を参照しながら説明する。尚、従来と同一構成につ
いては同一符号を付して詳細な説明を省略する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A suction pipe according to a first embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same components as those of the related art are designated by the same reference numerals and detailed description thereof is omitted.

【0021】図1は本発明の第1の実施例における圧縮
機の縦断面図である。図2は図1の要部断面図である。
FIG. 1 is a vertical sectional view of a compressor according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the main part of FIG.

【0022】図1,図2において5は吸入管であり、第
1分岐管6、第3分岐管7、第2分岐管8より構成され
ている。第1分岐管6は密閉容器1外に連通し、第2分
岐管8は密着巻スプリング10に接続されている。また
第3分岐管7はその一端7aが潤滑油12中に開口され
ている。
In FIG. 1 and FIG. 2, 5 is a suction pipe, which is composed of a first branch pipe 6, a third branch pipe 7, and a second branch pipe 8. The first branch pipe 6 communicates with the outside of the closed container 1, and the second branch pipe 8 is connected to a tightly wound spring 10. Further, one end 7 a of the third branch pipe 7 is opened in the lubricating oil 12.

【0023】以上のように構成された圧縮機について、
以下その動作を説明する。まず、電動要素3によって駆
動される圧縮要素2には外部冷却回路(図示せず)より
戻ってきた冷媒ガスは第1分岐管6、第2分岐管8、密
着巻スプリング10、挿入管9を介し吸入マフラー11
に流れ込んでいく。この時、密着巻スプリング10の密
着隙間から冷媒ガスの1部が密着容器1内に放出され、
電動要素3等の冷却を行うことができる。
Regarding the compressor configured as described above,
The operation will be described below. First, in the compression element 2 driven by the electric element 3, the refrigerant gas returned from the external cooling circuit (not shown) passes through the first branch pipe 6, the second branch pipe 8, the close wound spring 10, and the insertion pipe 9. Through inhalation muffler 11
Flows into. At this time, a part of the refrigerant gas is discharged into the contact container 1 from the contact gap of the contact winding spring 10,
The electric element 3 and the like can be cooled.

【0024】また逆に、この密着隙間を介して密閉容器
1内の加熱され膨脹した冷媒ガスが密着巻スプリング1
0内に吸い込まれる量は、密着巻スプリング10の密着
量を調整することによって低減することができる。さら
に、吸入管5から液冷媒が吸い込まれた際には、第3分
岐管7の分岐管内径を十分大きく設計することができる
ため、液冷媒は圧縮要素2内に流れ込むことなく開口端
7aより密閉容器1内に排出され、開口端7aは潤滑油
12中にあるため密閉容器1内の加熱され膨脹した冷媒
ガスを開口端7aから吸入管5内に吸い込むこともな
い。
On the other hand, the heated and expanded refrigerant gas in the closed container 1 passes through the close contact gap and the close contact spring 1
The amount sucked into 0 can be reduced by adjusting the contact amount of the contact winding spring 10. Furthermore, when the liquid refrigerant is sucked from the suction pipe 5, the inner diameter of the branch pipe of the third branch pipe 7 can be designed to be sufficiently large, so that the liquid refrigerant does not flow into the compression element 2 and flows from the opening end 7a. Since the refrigerant is discharged into the closed container 1 and the opening end 7a is in the lubricating oil 12, the heated and expanded refrigerant gas in the closed container 1 is not sucked into the suction pipe 5 through the opening end 7a.

【0025】また、P1は第3分岐管7内圧力、P2は
密閉容器1内圧力、L1は第1分岐管6の潤滑油12の
油面からの高さ、L2は密閉容器1内の潤滑油の油面か
ら第3分岐管7内での油面までの高さ、ρは潤滑油12
の密度とし、(数1)に示したL2に対してL1が(数
2)を満足するように設計することにより、第2分岐管
8まで潤滑油12の油面が上昇しないため、第1分岐管
6から流れ込んだ液冷媒は第2分岐管8に流れ込むこと
なく、第3分岐管7より密閉容器1内へ排出される。さ
らに、潤滑油12が吸入マフラー11、圧縮要素2に流
れ込むことも防止できる。
P1 is the internal pressure of the third branch pipe 7, P2 is the internal pressure of the closed container 1, L1 is the height from the oil surface of the lubricating oil 12 of the first branch pipe 6, and L2 is the lubrication inside the closed container 1. The height from the oil surface of the oil to the oil surface in the third branch pipe 7, ρ is the lubricating oil 12
Since the oil level of the lubricating oil 12 does not rise to the second branch pipe 8 by designing so that L1 satisfies (Equation 2) with respect to L2 shown in (Equation 1), The liquid refrigerant flowing from the branch pipe 6 is discharged into the closed container 1 from the third branch pipe 7 without flowing into the second branch pipe 8. Further, the lubricating oil 12 can be prevented from flowing into the suction muffler 11 and the compression element 2.

【0026】[0026]

【数1】 [Equation 1]

【0027】[0027]

【数2】 [Equation 2]

【0028】従って、液冷媒が圧縮要素2内に吸い込ま
れることを防止できるとともに、吸入管5内に密閉容器
1内の加熱され膨脹した冷媒ガスが吸い込まれ、圧縮要
素に供給されることを低減でき、密度の高い冷媒ガスだ
けを圧縮要素2に供給することができ体積効率の向上を
図ることができる。
Therefore, the liquid refrigerant can be prevented from being sucked into the compression element 2 and the heated and expanded refrigerant gas in the closed vessel 1 is sucked into the suction pipe 5 and supplied to the compression element. It is possible to supply only the dense refrigerant gas to the compression element 2, and it is possible to improve the volumetric efficiency.

【0029】以上のように本実施例の密閉型圧縮機は、
密閉容器1外に連通した第1分岐管6と、密着巻スプリ
ング10に接続された第2分岐管8と、分岐管の一端7
aが潤滑油12中に開口した第3分岐管7とから構成と
されているので、液冷媒が圧縮要素2に吸い込まれるこ
とを防止できるとともに、密閉容器1空間内の加熱され
膨脹した冷媒ガスを圧縮要素2内に吸い込むことを低減
でき、体積効率の向上を図ることができる。
As described above, the hermetic compressor of this embodiment is
The first branch pipe 6 communicating with the outside of the closed container 1, the second branch pipe 8 connected to the close-wound spring 10, and one end 7 of the branch pipe.
Since a is composed of the third branch pipe 7 opened in the lubricating oil 12, the liquid refrigerant can be prevented from being sucked into the compression element 2, and the heated and expanded refrigerant gas in the closed container 1 space. It is possible to reduce the suction of air into the compression element 2 and improve the volumetric efficiency.

【0030】次に、本発明の第2の実施例の吸入管につ
いて図面を参照しながら説明する。尚、第1の実施例と
同一構成については同一符号を付けて詳細な説明を省略
する。
Next, a suction pipe according to a second embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

【0031】図3は本発明の第2の実施例における圧縮
機の縦断面図である。図3において第3分岐管16は熱
伝導の低い材料でできており、第3分岐管16の一端1
6aが潤滑油12中に開口されている。
FIG. 3 is a vertical sectional view of a compressor according to the second embodiment of the present invention. In FIG. 3, the third branch pipe 16 is made of a material having low heat conductivity, and
6a is opened in the lubricating oil 12.

【0032】以上のように構成された圧縮機について、
以下その動作を説明する。第3分岐管16は熱伝導の低
い材料でできているため、潤滑油12の熱が第3分岐管
16を介して第1分岐管6、第2分岐管8に伝わること
を防ぐことができる。よって、冷媒ガスが分岐吸入管5
内で加熱され膨脹することを低減でき、密度の高い冷媒
ガスを圧縮要素2内に供給でき体積効率の向上が図れ
る。
Regarding the compressor configured as described above,
The operation will be described below. Since the third branch pipe 16 is made of a material having low heat conduction, it is possible to prevent the heat of the lubricating oil 12 from being transferred to the first branch pipe 6 and the second branch pipe 8 via the third branch pipe 16. . Therefore, the refrigerant gas is distributed to the branch suction pipe 5.
It is possible to reduce the expansion due to being heated inside, and to supply the refrigerant gas with high density into the compression element 2, so that the volumetric efficiency can be improved.

【0033】以上のように本実施例の密閉型圧縮機は、
熱伝導の低い材料で第3分岐管が構成されているので、
潤滑油12の熱が第3分岐管16を介して第1分岐管
6、第2分岐管8に伝わることを防ぐことができる。
As described above, the hermetic compressor of this embodiment is
Since the third branch pipe is made of a material with low heat conduction,
It is possible to prevent the heat of the lubricating oil 12 from being transferred to the first branch pipe 6 and the second branch pipe 8 via the third branch pipe 16.

【0034】従って、冷媒ガスが分岐吸入管5内で加熱
され、膨脹することを低減でき、密度の高い冷媒ガスを
圧縮要素2内に供給でき体積効率の向上を図ることがで
きる。
Therefore, the refrigerant gas can be prevented from being heated and expanded in the branch suction pipe 5, and the dense refrigerant gas can be supplied into the compression element 2 to improve the volumetric efficiency.

【0035】次に、本発明の第3の実施例の吸入管につ
いて図面を参照しながら説明する。尚、第1の実施例と
同一構成については同一符号を付けて詳細な説明を省略
する。
Next, a suction pipe according to a third embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

【0036】図4は本発明の第3の実施例における圧縮
機の縦断面図である。図5は図4の要部断面図である。
FIG. 4 is a vertical sectional view of a compressor according to the third embodiment of the present invention. FIG. 5 is a cross-sectional view of the main parts of FIG.

【0037】図4,図5において17は吸入管であり、
第1分岐管18、第3分岐管19、第2分岐管20で構
成されている。さらに、第1分岐管18、第3分岐管1
9、第2分岐管20は分岐管断面積より大なる断面積を
有したタンク21にて連結されている。また、第1分岐
管18は密閉容器1外に連通し、第2分岐管20は密着
巻スプリング10に接続されている。また第3分岐管1
9はその一端19aが潤滑油12中に開口されている。
In FIGS. 4 and 5, reference numeral 17 is a suction pipe,
It is composed of a first branch pipe 18, a third branch pipe 19, and a second branch pipe 20. Further, the first branch pipe 18 and the third branch pipe 1
9. The second branch pipe 20 is connected by a tank 21 having a cross sectional area larger than the cross sectional area of the branch pipe. Further, the first branch pipe 18 communicates with the outside of the closed container 1, and the second branch pipe 20 is connected to the tightly wound spring 10. Also, the third branch pipe 1
9 has one end 19 a opened in the lubricating oil 12.

【0038】以上のように構成された圧縮機について、
以下その動作を説明する。電動要素3によって駆動され
る圧縮要素2に外部冷却回路(図示せず)より液冷媒が
戻ってきた時には、その液冷媒は第1分岐管18を介
し、タンク21内に吸い込まれる。液冷媒がタンク21
に吸い込まれると、タンク21の断面積が第1分岐管1
8よりも大であるため液冷媒の流速を急激に低下させる
ことができ、液冷媒に対してタンク21がトラップとな
る。
Regarding the compressor configured as described above,
The operation will be described below. When the liquid refrigerant returns from the external cooling circuit (not shown) to the compression element 2 driven by the electric element 3, the liquid refrigerant is sucked into the tank 21 via the first branch pipe 18. Liquid refrigerant is in tank 21
When it is sucked into the tank, the cross-sectional area of the tank 21 becomes
Since it is larger than 8, the flow velocity of the liquid refrigerant can be rapidly reduced, and the tank 21 serves as a trap for the liquid refrigerant.

【0039】また、P1はタンク21内圧力、P2は密
閉容器1内圧力、L1は第1分岐管18の潤滑油12の
油面からの高さ、L2は密閉容器1内の潤滑油の油面か
ら第3分岐管19内での油面までの高さ、ρは潤滑油1
2の密度とし、(数3)に示したL2に対してL1が
(数4)を満足するように設計することにより、第2分
岐管20まで潤滑油12の油面が上昇しないため、第1
分岐管18から流れ込んだ液冷媒は第2分岐管20に流
れ込むことなく、第3分岐管19より密閉容器1内へ排
出される。さらに、潤滑油12が吸入マフラー11、圧
縮要素2に流れ込むことも防止できる。
Further, P1 is the internal pressure of the tank 21, P2 is the internal pressure of the closed container 1, L1 is the height from the oil surface of the lubricating oil 12 of the first branch pipe 18, and L2 is the oil of the lubricating oil in the closed container 1. From the surface to the oil level in the third branch pipe 19, ρ is the lubricating oil 1
When the density is set to 2 and the design is such that L1 satisfies (Equation 4) with respect to L2 shown in (Equation 3), the oil level of the lubricating oil 12 does not rise to the second branch pipe 20, 1
The liquid refrigerant flowing from the branch pipe 18 is discharged into the closed container 1 from the third branch pipe 19 without flowing into the second branch pipe 20. Further, the lubricating oil 12 can be prevented from flowing into the suction muffler 11 and the compression element 2.

【0040】[0040]

【数3】 [Equation 3]

【0041】[0041]

【数4】 [Equation 4]

【0042】従って、一旦タンク21内に液冷媒を溜
め、その後、第3分岐管19より密閉容器1内へ液冷媒
を確実に排出することができるため、液冷媒が圧縮要素
2に流れ込むことを確実に防止できる。また、タンク2
1にて冷媒の流速を低減できるため、圧力脈動を低減で
きる。
Therefore, since the liquid refrigerant can be temporarily stored in the tank 21 and then discharged into the closed container 1 through the third branch pipe 19, the liquid refrigerant can be prevented from flowing into the compression element 2. It can be surely prevented. Also, tank 2
Since the flow velocity of the refrigerant can be reduced in 1, the pressure pulsation can be reduced.

【0043】以上のように本実施例の密閉型圧縮機は、
密閉容器1外に連通した第1分岐管18と、密着巻スプ
リング10に接続された第3分岐管19と、一端が潤滑
油12中に開口されている第2分岐管20と、分岐管断
面積より大なる断面積を有したタンク21とから構成さ
れているので、液冷媒が圧縮要素2に流れ込むことを確
実に防止でき、また、タンク21にて冷媒の圧力脈動を
低減できる。
As described above, the hermetic compressor of this embodiment is
A first branch pipe 18 communicating with the outside of the closed container 1, a third branch pipe 19 connected to the close-wound spring 10, a second branch pipe 20 having one end opened in the lubricating oil 12, and a branch pipe disconnection. Since it is composed of the tank 21 having a cross-sectional area larger than the area, it is possible to reliably prevent the liquid refrigerant from flowing into the compression element 2, and to reduce the pressure pulsation of the refrigerant in the tank 21.

【0044】[0044]

【発明の効果】以上説明したように本発明は、密閉容器
内で少なくとも3つの分岐管により構成される吸入管備
え、その1つの分岐管を潤滑油の中で開口することによ
り、液冷媒を圧縮要素に吸い込むことを防止できるとと
もに、密閉容器空間内の加熱され膨脹した冷媒ガスを圧
縮要素に供給することを低減でき、密度の高い冷媒ガス
だけを圧縮要素に供給することができるため体積効率の
向上を図る。
As described above, according to the present invention, the suction pipe constituted by at least three branch pipes is provided in the closed container, and one of the branch pipes is opened in the lubricating oil to remove the liquid refrigerant. It is possible to prevent sucking into the compression element, reduce the supply of the heated and expanded refrigerant gas in the closed container space to the compression element, and supply only the dense refrigerant gas to the compression element, so that the volumetric efficiency is improved. To improve.

【0045】また、分岐管を熱伝導の低い材料で構成す
ることにより密閉容器内の潤滑油から吸入管に熱が伝わ
ることを妨げるため冷媒ガスの温度上昇を防ぐことがで
き体積効率の向上を図ることができる。
Further, since the branch pipe is made of a material having low heat conduction, it prevents heat from being transferred from the lubricating oil in the closed container to the suction pipe, so that the temperature rise of the refrigerant gas can be prevented and the volumetric efficiency can be improved. Can be planned.

【0046】また、さらに、分岐管を分岐管の通路断面
積より大なる断面積を有したタンクにより連結すること
により、液冷媒が流れ込んで来たときにトラップとなり
液冷媒が圧縮要素に流れ込むことを確実に防止できると
ともに、分岐管内の冷媒の圧力脈動を低減することもで
きる。
Furthermore, by connecting the branch pipes with a tank having a cross-sectional area larger than the passage cross-sectional area of the branch pipes, when the liquid refrigerant flows in, it becomes a trap and the liquid refrigerant flows into the compression element. Can be reliably prevented, and the pressure pulsation of the refrigerant in the branch pipe can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1の実施例における圧縮機の縦断面
FIG. 1 is a vertical sectional view of a compressor according to a first embodiment of the present invention.

【図2】同実施例の要部断面図FIG. 2 is a cross-sectional view of the main part of the embodiment.

【図3】本発明の第2の実施例における圧縮機の縦断面
FIG. 3 is a vertical sectional view of a compressor according to a second embodiment of the present invention.

【図4】本発明の第3の実施例における圧縮機の縦断面
FIG. 4 is a vertical sectional view of a compressor according to a third embodiment of the present invention.

【図5】同実施例の要部断面図FIG. 5 is a cross-sectional view of the main part of the embodiment.

【図6】従来の圧縮機の縦断面図FIG. 6 is a vertical sectional view of a conventional compressor.

【符号の説明】[Explanation of symbols]

1 密閉容器 2 圧縮要素 3 電動要素 5 吸入管 6 第1分岐管 7 第3分岐管 8 第2分岐管 10 密着巻スプリング 12 潤滑油 21 タンク DESCRIPTION OF SYMBOLS 1 Airtight container 2 Compression element 3 Electric element 5 Suction pipe 6 1st branch pipe 7 3rd branch pipe 8 2nd branch pipe 10 Close contact winding spring 12 Lubricating oil 21 Tank

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 密閉容器と、前記密閉容器内に弾性支持
された圧縮要素及び電動要素と、前記密閉容器内部に溜
められた潤滑油と、冷却サイクルのもどり側に取付られ
る吸入管と、この吸入管から前記圧縮要素の吸入口に至
る間に取付られた吸入マフラーとよりなり、前記吸入管
を冷却サイクルのもどり側と接続した第1分岐管と、前
記第1分岐管から吸入マフラーへ導く第2分岐管と、前
記第1分岐管から前記潤滑油中へ延びる第3分岐管とよ
り構成したことを特徴とする密閉型圧縮機。
1. An airtight container, a compression element and an electric element elastically supported in the airtight container, lubricating oil accumulated in the airtight container, and a suction pipe attached to the return side of a cooling cycle. A first branch pipe, which comprises an intake muffler mounted between the suction pipe and the suction port of the compression element, and connects the suction pipe to the return side of the cooling cycle, and leads from the first branch pipe to the suction muffler. A hermetic compressor comprising a second branch pipe and a third branch pipe extending from the first branch pipe into the lubricating oil.
【請求項2】 第2分岐管を密着巻したコイルスプリン
グより形成したことを特徴とする請求項1記載の密閉型
圧縮機。
2. The hermetic compressor according to claim 1, wherein the second branch pipe is formed of a coil spring closely wound.
【請求項3】 第3分岐管を熱伝導性の低い材料で構成
する請求項1記載の密閉型圧縮機。
3. The hermetic compressor according to claim 1, wherein the third branch pipe is made of a material having low heat conductivity.
【請求項4】 複数の分岐管を分岐管の通路断面積より
大なる断面積を有したタンクを介して連結した請求項1
記載の密閉型圧縮機。
4. A plurality of branch pipes are connected via a tank having a cross-sectional area larger than the passage cross-sectional area of the branch pipe.
The hermetic compressor described.
JP04246279A 1992-09-16 1992-09-16 Hermetic compressor Expired - Fee Related JP3119947B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04246279A JP3119947B2 (en) 1992-09-16 1992-09-16 Hermetic compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04246279A JP3119947B2 (en) 1992-09-16 1992-09-16 Hermetic compressor

Publications (2)

Publication Number Publication Date
JPH0693970A true JPH0693970A (en) 1994-04-05
JP3119947B2 JP3119947B2 (en) 2000-12-25

Family

ID=17146180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04246279A Expired - Fee Related JP3119947B2 (en) 1992-09-16 1992-09-16 Hermetic compressor

Country Status (1)

Country Link
JP (1) JP3119947B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000192884A (en) * 1998-12-25 2000-07-11 Matsushita Refrig Co Ltd Enclosed type electric compressor
JP2016023573A (en) * 2014-07-18 2016-02-08 日立アプライアンス株式会社 Hermetic compressor and apparatus mounting therein

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000192884A (en) * 1998-12-25 2000-07-11 Matsushita Refrig Co Ltd Enclosed type electric compressor
JP2016023573A (en) * 2014-07-18 2016-02-08 日立アプライアンス株式会社 Hermetic compressor and apparatus mounting therein

Also Published As

Publication number Publication date
JP3119947B2 (en) 2000-12-25

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