JPH08219066A - Compressor - Google Patents

Compressor

Info

Publication number
JPH08219066A
JPH08219066A JP2192795A JP2192795A JPH08219066A JP H08219066 A JPH08219066 A JP H08219066A JP 2192795 A JP2192795 A JP 2192795A JP 2192795 A JP2192795 A JP 2192795A JP H08219066 A JPH08219066 A JP H08219066A
Authority
JP
Japan
Prior art keywords
refrigerant
suction pipe
compression element
compressor
closed container
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.)
Pending
Application number
JP2192795A
Other languages
Japanese (ja)
Inventor
Taira Muto
平 武藤
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2192795A priority Critical patent/JPH08219066A/en
Publication of JPH08219066A publication Critical patent/JPH08219066A/en
Pending legal-status Critical Current

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  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE: To reduce pulsation transmitted to refrigerant sucked into a compressor so as to reduce noise caused by pulsation. CONSTITUTION: In a compressor provided with a closed container, and a motor- driven element 2, a compression element 3, a suction pipe 19 and a discharge pipe 20 in the closed container 1, the suction pipe 19 is provided with a connecting part 21 inserted into the compression element 3, and a refrigerant guide part protruding spirally inside along the connecting part 21.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は冷凍装置に使用される
圧縮機において、吸込管の形状を改良したものに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor used in a refrigeration system, in which the shape of a suction pipe is improved.

【0002】[0002]

【従来の技術】従来、冷凍装置に用いられている圧縮機
としては、例えば実公昭62−37970号公報があ
る。この圧縮機は、密閉容器の内部に電動要素と圧縮要
素とを配設し、下部に冷媒の吸込口を、上部に冷媒の吐
出口を形成している。密閉容器にはアキュムレータが並
列に配設されており、アキュムレータの下部の冷媒の出
口と吸込口が曲管によって連結されている。
2. Description of the Related Art As a conventional compressor used in a refrigerating apparatus, there is, for example, Japanese Utility Model Publication No. 62-37970. In this compressor, an electric element and a compression element are arranged inside a closed container, a refrigerant inlet is formed in a lower portion, and a refrigerant outlet is formed in an upper portion. An accumulator is arranged in parallel in the closed container, and a refrigerant outlet and a suction port in a lower portion of the accumulator are connected by a curved pipe.

【0003】そして冷凍装置において、アキュムレータ
で冷媒をガス冷媒と液冷媒に分離し、ガス冷媒のみが圧
縮機の吸込口に流入する。そして圧縮要素で圧縮した
後、吐出口より吐出する。
In the refrigeration system, the refrigerant is separated into the gas refrigerant and the liquid refrigerant by the accumulator, and only the gas refrigerant flows into the suction port of the compressor. Then, after being compressed by the compression element, it is discharged from the discharge port.

【0004】この冷媒には、従来ジクロロジフルオロメ
タン(以下R12という)や、共沸混合冷媒のR12と
1,1−ジフロオロエタン(以下R152aという)と
からなるR500を用いていた。そして冷凍機油には、
R12などのCFC系冷媒と相溶性がよい鉱物油やアル
キルベンゼン系油等を用いていた。
Conventionally, R500, which is composed of dichlorodifluoromethane (hereinafter referred to as R12) and an azeotropic refrigerant R12 and 1,1-difluoroethane (hereinafter referred to as R152a), has been used as the refrigerant. And for refrigerating machine oil,
A mineral oil, an alkylbenzene oil, or the like having good compatibility with a CFC refrigerant such as R12 was used.

【0005】しかしながら、上記の各冷媒は、その高い
オゾン層破壊の潜在性により、大気中に放出されて地球
上空のオゾン層に到達すると、オゾン層を破壊する。こ
のオゾン層の破壊は冷媒中の塩素基により引き起こされ
る。そこで、この塩素基の含有量の少ない冷媒や塩素機
を含まない冷媒、あるいはこれらの混合物がこれらの代
替冷媒として考えられている。
However, due to the high ozone layer depletion potential, each of the above refrigerants destroys the ozone layer when it reaches the ozone layer above the earth by being released into the atmosphere. The destruction of the ozone layer is caused by the chlorine group in the refrigerant. Therefore, a refrigerant having a low chlorine group content, a refrigerant not containing a chlorine machine, or a mixture thereof is considered as an alternative refrigerant for these.

【0006】塩素基の含有量の少ない冷媒としては、例
えばクロロジフルオロメタン(HCFC−22、以下R
22という)があり、塩素基を含まない冷媒としては、
例えばジフルオロメタン(HFC−32、以下R32と
いう)、ペンタフルオロエタン(HFC−125、以下
R125という)がある。そしてHFC系冷媒に対して
使用される冷凍機油は、相溶性のあるエステル系油やエ
ーテル系油、及びこれらの混合油が用いられる。
As a refrigerant having a low chlorine content, for example, chlorodifluoromethane (HCFC-22, hereinafter R
22), and as a refrigerant containing no chlorine group,
For example, there are difluoromethane (HFC-32, hereinafter R32) and pentafluoroethane (HFC-125, hereinafter R125). As the refrigerating machine oil used for the HFC-based refrigerant, compatible ester-based oils, ether-based oils, and mixed oils thereof are used.

【0007】[0007]

【発明が解決しようとする課題】しかしながらHFC系
冷媒はCFC系冷媒と比較して、冷凍能力や成績係数が
低下する問題があった。そのため、この低下を防止して
冷凍能力を向上させるために、各種改善が必要であっ
た。
However, the HFC type refrigerant has a problem that the refrigerating capacity and the coefficient of performance are lowered as compared with the CFC type refrigerant. Therefore, in order to prevent this decrease and improve the refrigerating capacity, various improvements have been necessary.

【0008】従来の圧縮機は、作動中に圧縮要素が発熱
して高温になっていた。そして曲管が圧縮要素に密着し
ているため、曲管に圧縮要素の熱が伝わり、曲管内の冷
媒を温めていた。したがって圧縮要素に吸込まれる冷媒
が高温になり、体積効率が悪かった。また、圧縮機の脈
動が吸込側の冷媒に伝わり、騒音を発生していた。
In the conventional compressor, the compression element generates heat during operation and becomes high in temperature. Since the curved pipe is in close contact with the compression element, the heat of the compression element is transferred to the curved pipe and warms the refrigerant in the curved pipe. Therefore, the refrigerant sucked into the compression element becomes high in temperature, resulting in poor volumetric efficiency. Further, the pulsation of the compressor is transmitted to the refrigerant on the suction side, which causes noise.

【0009】したがってこの発明は、圧縮機に吸込まれ
る冷媒の過熱を防ぎ体積効率を向上させることを目的と
する。
Therefore, an object of the present invention is to prevent the refrigerant sucked into the compressor from being overheated and to improve the volumetric efficiency.

【0010】また、圧縮機の吸込側の脈動を低減して、
騒音を低減させることを目的とする。
Further, by reducing the pulsation on the suction side of the compressor,
The purpose is to reduce noise.

【0011】[0011]

【課題を解決するための手段】本発明は上記課題を解決
するために、請求項1の発明は密閉容器と、前記密閉容
器内に収納され冷媒を圧縮する圧縮要素と、前記圧縮要
素を駆動する電動要素と、冷媒を前記密閉容器内に吸込
む吸込管と、前記密閉容器内の圧縮された冷媒を吐出す
る吐出管を備えた圧縮機において、前記吸込管には、前
記圧縮要素内に挿入されるとともに前記圧縮要素内に冷
媒を導く接続部と、前記接続部の内側を螺旋状に沿って
突出する冷媒案内部を設けた圧縮機である。
In order to solve the above problems, the present invention provides a closed container, a compression element for compressing a refrigerant contained in the closed container, and a drive element for the compression element. In the compressor provided with an electric element, a suction pipe for sucking the refrigerant into the closed container, and a discharge pipe for discharging the compressed refrigerant in the closed container, the suction pipe is inserted into the compression element. The compressor is provided with a connection part that guides a refrigerant into the compression element and a refrigerant guide part that protrudes along the spiral inside the connection part.

【0012】また、請求項2の発明は、前記接続部の外
周には、螺旋状に沿って突出する当接部を設けた請求項
1記載の圧縮機である。
The invention according to claim 2 is the compressor according to claim 1, wherein an abutting portion protruding along a spiral is provided on the outer periphery of the connecting portion.

【0013】[0013]

【作用】請求項1の発明は、吸込管の内側を螺旋状に沿
って突出した冷媒案内部を設けている。そして冷媒が吸
込管内を通過するとき、冷媒はこの冷媒案内部に沿って
流れながら吸込まれる。そのため吸込管内で、冷媒が渦
を巻きながら吸込まれる流れを形成する。
According to the first aspect of the invention, the refrigerant guide portion is provided so as to protrude inside the suction pipe in a spiral shape. When the refrigerant passes through the suction pipe, the refrigerant is sucked while flowing along the refrigerant guide portion. Therefore, in the suction pipe, a flow in which the refrigerant is sucked while swirling is formed.

【0014】請求項2の発明は、吸込管の外周を螺旋状
に沿って突出した当接部を形成している。そのため圧縮
要素に吸込管を取付けたとき、吸込管の当接部が圧縮要
素に当接して保持され、吸込管と圧縮要素との間に隙間
を有して空気層を形成する。そしてこの空気層が断熱作
用をして、圧縮要素から吸込管に伝わる熱を減少してい
る。
According to the second aspect of the present invention, the contact portion is formed by spirally projecting the outer circumference of the suction pipe. Therefore, when the suction pipe is attached to the compression element, the contact portion of the suction pipe is held in contact with the compression element, and an air layer is formed with a gap between the suction pipe and the compression element. This air layer acts as a heat insulator to reduce the heat transferred from the compression element to the suction pipe.

【0015】[0015]

【実施例】以下、図面に基づいてこの発明の実施例を説
明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0016】図1は密閉型の圧縮機の要部側断面図であ
る。1は密閉容器であり、この密閉容器1内には上側に
電動要素2が、下側にこの電動要素2によって駆動され
る圧縮要素3がそれぞれ収納されている。電動要素2は
有機系材料で絶縁された巻線4を有する固定子5と、こ
の固定子5の内側に設けられた回転子6で構成されてい
る。
FIG. 1 is a side sectional view of a main part of a hermetic compressor. Reference numeral 1 denotes an airtight container. In the airtight container 1, an electric element 2 is housed on the upper side, and a compression element 3 driven by the electric element 2 is housed on the lower side. The electric element 2 is composed of a stator 5 having a winding 4 which is insulated by an organic material, and a rotor 6 provided inside the stator 5.

【0017】圧縮要素3は、シリンダ7と、回転軸8の
偏心部9によってシリンダ7の内壁に沿って回転させる
ローラ10と、このローラ10の周面に圧接されてシリ
ンダ7内を吸込側と吐出側とに区画するようにバネ11
で押圧されるベーン12と、シリンダ7の開口を封じる
と共に、回転軸8を軸支する上部軸受け13及び下部軸
受け14とで構成されている。
The compression element 3 includes a cylinder 7, a roller 10 which is rotated along an inner wall of the cylinder 7 by an eccentric portion 9 of a rotating shaft 8, and a suction side of the cylinder 7 which is pressed against the peripheral surface of the roller 10. The spring 11 is divided so as to be divided into the discharge side.
It is composed of a vane 12 which is pressed by, an upper bearing 13 and a lower bearing 14 which seal the opening of the cylinder 7 and support the rotating shaft 8.

【0018】そして上部軸受け13には、シリンダ7の
吐出側と連通する吐出孔15が設けられている。また、
上部軸受け13には吐出孔15を開閉する吐出弁16
と、この吐出弁16を覆うように吐出マフラ17とが取
付けられている。
The upper bearing 13 is provided with a discharge hole 15 which communicates with the discharge side of the cylinder 7. Also,
The upper bearing 13 has a discharge valve 16 for opening and closing the discharge hole 15.
A discharge muffler 17 is attached so as to cover the discharge valve 16.

【0019】ベーン12は高速度鋼(SKH)或いは炭
化珪素ウィスカーの集合プリフォームアルミを含浸させ
たFRM材料で形成されている。ローラ10は鉄系材料
で形成されている。そしてローラ10とベーン12の協
働によって冷媒を圧縮している。
The vanes 12 are formed of high speed steel (SKH) or FRM material impregnated with aggregate preformed aluminum of silicon carbide whiskers. The roller 10 is made of an iron-based material. The refrigerant is compressed by the cooperation of the roller 10 and the vane 12.

【0020】この圧縮機を使用する冷凍装置には、HF
C系冷媒、例えばR134aを用いるため、冷凍機油に
はR134aと相溶性のあるポリオールエステル系油を
用いる。そして密閉容器1内の底部には、ポリオールエ
ステル系油のオイル18が貯留されており、圧縮要素3
の摺動部材であるローラ10とベーン12との摺動面を
潤滑している。さらにこのオイル18は、電動要素2や
冷媒圧縮による発熱を放出する冷却作用及びガス密封作
用の役割を持っている。
A refrigerating apparatus using this compressor has an HF
Since a C-based refrigerant such as R134a is used, a polyol ester-based oil compatible with R134a is used as the refrigerating machine oil. The polyol ester oil 18 is stored at the bottom of the closed container 1, and the compression element 3
The sliding surface between the roller 10 and the vane 12, which is the sliding member, is lubricated. Further, the oil 18 has a role of cooling and a gas sealing action for releasing heat generated by the electric element 2 and the refrigerant compression.

【0021】19は密閉容器に取付けシリンダ7の吸込
側に冷媒を案内する吸込管、20は密閉容器1の上壁に
取付けられて回転圧縮で圧縮されて電動要素2を介して
密閉容器1外に冷媒を吐出する吐出管である。
Reference numeral 19 is a suction pipe which is attached to the closed container and guides the refrigerant to the suction side of the cylinder 7. Reference numeral 20 is attached to the upper wall of the closed container 1 and is compressed by rotary compression to be outside the closed container 1 via the electric element 2. It is a discharge pipe that discharges the refrigerant to.

【0022】図2は吸込管19の斜視図であり、図3は
吸込管19とシリンダ7との取付部分の要部側断面の拡
大図である。吸込管19は内部を冷媒が通過できる円筒
状であり、21は吸込管を設置するときにシリンダ7内
に挿入する接続部である。接続部21の外周には、螺旋
状に沿って連続して突出した当接部22が設けられてい
る。そして吸込管19をシリンダ7に取付けるとき、シ
リンダ7の内壁と当接部22が当接して設置される。こ
のためシリンダ7と吸込管19の間に隙間ができ、空気
層23を形成する。接続部21の先端の開口部24はシ
リンダ7の冷媒通路25と同じ大きさであり、開口部2
4の周縁とシリンダ7の内壁が当接して、圧縮要素3の
吸込側と空気層23が連通しないようになっている。
FIG. 2 is a perspective view of the suction pipe 19, and FIG. 3 is an enlarged view of a side cross section of a main part of a mounting portion of the suction pipe 19 and the cylinder 7. The suction pipe 19 has a cylindrical shape through which the refrigerant can pass, and 21 is a connecting portion which is inserted into the cylinder 7 when the suction pipe is installed. On the outer periphery of the connection portion 21, a contact portion 22 that continuously protrudes along the spiral shape is provided. When the suction pipe 19 is attached to the cylinder 7, the inner wall of the cylinder 7 and the abutting portion 22 are in contact with each other. Therefore, a gap is formed between the cylinder 7 and the suction pipe 19, and the air layer 23 is formed. The opening 24 at the tip of the connecting portion 21 has the same size as the refrigerant passage 25 of the cylinder 7, and the opening 2
The peripheral edge of 4 and the inner wall of the cylinder 7 are in contact with each other so that the suction side of the compression element 3 and the air layer 23 do not communicate with each other.

【0023】接続部21の内側には、螺旋状に沿って連
続して突出した冷媒案内部26を形成している。そして
冷媒が吸込管19を通過するとき、冷媒は冷媒案内部2
6に沿って流れて、渦を巻きながら吸込まれる。そのた
め圧縮機の作動中に生じる脈動が、この冷媒の流れによ
って冷媒に伝わりにくくなり、脈動による騒音を低減す
ることができる。
Inside the connection portion 21, there is formed a refrigerant guide portion 26 which continuously protrudes along a spiral shape. When the refrigerant passes through the suction pipe 19, the refrigerant is guided by the refrigerant guide portion 2
It flows along 6 and is sucked in while swirling. Therefore, the pulsation generated during the operation of the compressor is less likely to be transmitted to the refrigerant by the flow of the refrigerant, and the noise due to the pulsation can be reduced.

【0024】この圧縮機では、シリンダ7と吸込管19
の当接部分が少なく、さらにシリンダ7と吸込管19と
の間に断熱作用をする空気層23を有する。そのためシ
リンダ7の熱が吸込管19に伝わりにくく、吸込管19
を通過する冷媒の過熱を抑えることができる。そのため
圧縮機に吸込まれる冷媒の高温化を抑制でき、圧縮性能
が向上する。
In this compressor, the cylinder 7 and the suction pipe 19 are
Has a small contact portion, and further has an air layer 23 having a heat insulating function between the cylinder 7 and the suction pipe 19. Therefore, the heat of the cylinder 7 is hard to be transferred to the suction pipe 19, and the suction pipe 19
The overheat of the refrigerant passing through can be suppressed. Therefore, the temperature of the refrigerant sucked into the compressor can be suppressed from increasing, and the compression performance is improved.

【0025】[0025]

【発明の効果】請求項1の発明によれば、吸込管の内側
に螺旋状に突出した冷媒案内部を設けているため、冷媒
が冷媒案内部に沿って流れる。そのため冷媒が渦を巻き
ながら圧縮機に吸込まれ、圧縮機の脈動が冷媒に伝わり
難い。そのため、脈動による雑音を低減することができ
る。
According to the invention of claim 1, since the refrigerant guide portion that spirally protrudes is provided inside the suction pipe, the refrigerant flows along the refrigerant guide portion. Therefore, the refrigerant is sucked into the compressor while swirling, and the pulsation of the compressor is difficult to be transmitted to the refrigerant. Therefore, noise due to pulsation can be reduced.

【0026】請求項2の発明によれば、圧縮要素と接続
する吸込管の外周に、螺旋状に突出した当接部を形成し
ている。そのため圧縮要素と吸込管の間に隙間を形成
し、空気層を有する。そしてこの空気層が断熱効果をす
るため、吸込管に圧縮要素の熱が伝わりにくい。そして
吸込管における冷媒の過熱を減少でき、体積効果が向上
する。
According to the second aspect of the present invention, a spirally protruding contact portion is formed on the outer circumference of the suction pipe connected to the compression element. Therefore, a gap is formed between the compression element and the suction pipe, and an air layer is provided. Since this air layer has a heat insulating effect, it is difficult for the heat of the compression element to be transmitted to the suction pipe. Then, overheating of the refrigerant in the suction pipe can be reduced, and the volume effect is improved.

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

【図1】 圧縮機の要部側断面図。FIG. 1 is a side sectional view of a main part of a compressor.

【図2】 吸込管の斜視図。FIG. 2 is a perspective view of a suction pipe.

【図3】 吸込管の取付部分の要部側断面の拡大図。FIG. 3 is an enlarged view of a side cross section of a main part of a mounting portion of a suction pipe.

【符号の説明】[Explanation of symbols]

2 電動要素 3 圧縮要素 18 オイル 19 吸込管 20 吐出管 21 接続部 22 当接部 23 空気層 25 冷媒通路 26 冷媒案内部 2 Electric element 3 Compression element 18 Oil 19 Suction pipe 20 Discharge pipe 21 Connection part 22 Contact part 23 Air layer 25 Refrigerant passage 26 Refrigerant guide part

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 密閉容器と、前記密閉容器内に収納され
冷媒を圧縮する圧縮要素と、前記圧縮要素を駆動する電
動要素と、冷媒を前記密閉容器内に吸込む吸込管と、前
記密閉容器内の圧縮された冷媒を吐出する吐出管を備え
た圧縮機において、前記吸込管には、前記圧縮要素内に
挿入されるとともに前記圧縮要素内に冷媒を導く接続部
と、前記接続部の内側を螺旋状に沿って突出する冷媒案
内部を設けたことを特徴とする圧縮機。
1. A closed container, a compression element housed in the closed container for compressing a refrigerant, an electric element for driving the compression element, a suction pipe for sucking the refrigerant into the closed container, and an inside of the closed container. In a compressor provided with a discharge pipe for discharging the compressed refrigerant, the suction pipe has a connection part that is inserted into the compression element and guides the refrigerant into the compression element, and an inside of the connection part. A compressor provided with a refrigerant guide portion protruding along a spiral shape.
【請求項2】 前記接続部の外周には、螺旋状に沿って
突出する当接部を設けたことを特徴とする請求項1記載
の圧縮機。
2. The compressor according to claim 1, wherein an abutting portion that projects along a spiral shape is provided on the outer periphery of the connecting portion.
JP2192795A 1995-02-09 1995-02-09 Compressor Pending JPH08219066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2192795A JPH08219066A (en) 1995-02-09 1995-02-09 Compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2192795A JPH08219066A (en) 1995-02-09 1995-02-09 Compressor

Publications (1)

Publication Number Publication Date
JPH08219066A true JPH08219066A (en) 1996-08-27

Family

ID=12068707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2192795A Pending JPH08219066A (en) 1995-02-09 1995-02-09 Compressor

Country Status (1)

Country Link
JP (1) JPH08219066A (en)

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