JP3007746B2 - Rotary compressor - Google Patents
Rotary compressorInfo
- Publication number
- JP3007746B2 JP3007746B2 JP4073662A JP7366292A JP3007746B2 JP 3007746 B2 JP3007746 B2 JP 3007746B2 JP 4073662 A JP4073662 A JP 4073662A JP 7366292 A JP7366292 A JP 7366292A JP 3007746 B2 JP3007746 B2 JP 3007746B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- container
- rotary compressor
- oil
- flow path
- 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.)
- Expired - Lifetime
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】この発明は回転式圧縮機に関する
ものであり、特に冷凍装置あるいは空調機等の冷媒ガス
を圧縮する密閉形の回転式圧縮機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary compressor, and more particularly to a hermetic rotary compressor for compressing a refrigerant gas in a refrigerating apparatus or an air conditioner.
【0002】[0002]
【従来の技術】図5は例えば特開昭64−73190号
公報に示された従来の回転式圧縮機を示す断面図であ
る。図5において、1は回転式圧縮機の外郭をなす密閉
容器、2は密閉容器1内に挿着した固定子、3は固定子
2の中央空間部に所定の間隔を隔てて位置する回転子、
4は固定子2及び回転子3からなる電動要素である。6
は回転子3に圧入した回転軸、7は回転子3と一体に形
成したクランク軸である。8は回転軸6を軸支する主軸
受で、9は回転軸6を軸支する端軸受である。10は密
閉容器1内に挿着したシリンダであり、この左右の二面
に主軸受8及び端軸受9が各々固定されている。11は
回転軸6のクランク軸7に嵌着したローリングピストン
であり、シリンダ10内の中央空間部の内壁面に線接触
状態にて可動式に配設されている。また、このローリン
グピストン11はシリンダ10内に配設されたベーン
(図示せず)とも当接状態となっている。12は主軸受
8、端軸受9、シリンダ10、及びローリングピストン
11からなる圧縮要素である。13はシリンダ10とロ
ーリングピストン11との隙間に形成される吸入・圧縮
室であり、シリンダ10内に配設されたベーン(図示せ
ず)により高圧の圧縮室と低圧の吸入室に区割されてい
る。そして、ローリングピストン11の偏心回転によ
り、冷媒ガス等の被圧縮媒体を吸入する行程から圧縮す
る行程へと順次移行する一連の吸入・圧縮行程を連続し
て繰返す。2. Description of the Related Art FIG. 5 is a sectional view showing a conventional rotary compressor disclosed in, for example, JP-A-64-73190. In FIG. 5, reference numeral 1 denotes a hermetic container forming an outer shell of a rotary compressor, 2 denotes a stator inserted in the hermetic container 1, and 3 denotes a rotor located at a predetermined space in a central space of the stator 2. ,
Reference numeral 4 denotes an electric element including the stator 2 and the rotor 3. 6
Reference numeral denotes a rotary shaft press-fitted into the rotor 3, and reference numeral 7 denotes a crankshaft integrally formed with the rotor 3. Reference numeral 8 denotes a main bearing that supports the rotating shaft 6, and 9 denotes an end bearing that supports the rotating shaft 6. Reference numeral 10 denotes a cylinder inserted into the closed container 1, and a main bearing 8 and an end bearing 9 are fixed to two surfaces on the left and right, respectively. Reference numeral 11 denotes a rolling piston fitted to the crankshaft 7 of the rotating shaft 6, which is movably disposed on the inner wall surface of the central space in the cylinder 10 in line contact. The rolling piston 11 is also in contact with a vane (not shown) disposed in the cylinder 10. Reference numeral 12 denotes a compression element including the main bearing 8, the end bearing 9, the cylinder 10, and the rolling piston 11. Reference numeral 13 denotes a suction / compression chamber formed in a gap between the cylinder 10 and the rolling piston 11, and is divided into a high-pressure compression chamber and a low-pressure suction chamber by a vane (not shown) provided in the cylinder 10. ing. The eccentric rotation of the rolling piston 11 continuously repeats a series of suction / compression steps that sequentially transition from a step of sucking a medium to be compressed such as refrigerant gas to a step of compressing the medium.
【0003】圧縮されたガスは摺動部の潤滑油とともに
吐出バルブ(図示せず)、仕切り板16、吐出マフラー
17を通り、密閉容器1内の矢印の方向に吐出され、吐
出パイプ15を流れ、冷凍回路へ送り込まれる。[0003] The compressed gas passes through a discharge valve (not shown), a partition plate 16 and a discharge muffler 17 together with the lubricating oil of the sliding portion, and is discharged in the direction of an arrow in the sealed container 1 and flows through the discharge pipe 15. Is sent to the refrigeration circuit.
【0004】[0004]
【発明が解決しようとする課題】従来の回転式圧縮機は
以上のように構成されているので、摺動部の潤滑油が吐
出弁室内や吐出マフラー17内に貯まり、圧縮ガスとと
もに多くの油が吐出されることと、吐出される吐出し口
と吐出パイプ15が同方向のため十分な油分離が行なえ
ずに吐出パイプ15より潤滑油が冷凍回路へ送り出さ
れ、冷凍回路内の熱交換率を悪化させたり、圧縮機内の
必要潤滑油量を満たすことができなくなるほど減少し回
転軸と軸受が焼きつけを起すなどの問題点があった。Since the conventional rotary compressor is constructed as described above, the lubricating oil in the sliding portion is stored in the discharge valve chamber and in the discharge muffler 17, and a large amount of oil is stored together with the compressed gas. Is discharged, and since the discharge port to be discharged and the discharge pipe 15 are in the same direction, sufficient oil separation cannot be performed and lubricating oil is sent out from the discharge pipe 15 to the refrigeration circuit, and the heat exchange rate in the refrigeration circuit is reduced. Or the amount of lubricating oil required in the compressor cannot be satisfied, resulting in a problem that the rotating shaft and the bearing are seized.
【0005】この発明は上記のような問題点を解消する
ためになされたもので、回転式圧縮機内で十分な油分離
を行なうことを目的とする。[0005] The present invention has been made to solve the above problems, and has as its object to perform sufficient oil separation in a rotary compressor.
【0006】[0006]
【課題を解決するための手段】この発明に係る回転式圧
縮機は、シリンダのガス流路の入り口開口部を、円筒状
密閉容器の円筒方向中心線を含む水平面より下方に設
け、シリンダのガス流路を円筒方向中心線の一点とガス
流路入り口開口部を結ぶ、密閉容器側面に対する法線方
向より下方向に向けたものである。 According to a rotary compressor according to the present invention, an inlet opening of a gas passage of a cylinder is formed in a cylindrical shape.
Installed below the horizontal plane that includes the cylindrical centerline of the closed container
When the gas flow path of the cylinder is
The normal direction to the side of the closed container connecting the flow path entrance opening
It is directed downward.
【0007】[0007]
【0008】[0008]
【作用】この発明における回転式圧縮機は、圧縮ガスを
水平方向より下方で密閉容器側面に対する法線方向より
下方向に吐出するガス流路をシリンダに設けたため、吐
出された圧縮ガスと潤滑油の混合物は、密閉容器側壁面
との衝突による分離作用より分離される。また密閉容器
側面に対し、法線方向より下方向にしたことより、衝突
後、吐出パイプの設けてある位置である圧縮機上部方向
へ潤滑油が飛散する量が少なくなるため、冷凍回路内へ
流出する油循環量が少なくなる。 The rotary compressor according to the present invention generates compressed gas.
Below the horizontal direction and normal to the side of the closed container
The cylinder is provided with a gas passage that discharges downward,
The mixture of compressed gas and lubricating oil that has been discharged
It is separated from the separating action due to collision with. Also closed container
Collision due to lower than normal direction to side
Afterwards, toward the top of the compressor where the discharge pipe is located
Into the refrigeration circuit because the amount of lubricating oil scattered is reduced.
The amount of circulating oil is reduced.
【0009】[0009]
【0010】[0010]
【実施例】実施例1. 以下、この発明の一実施例を図1〜図4について説明す
る。図1は回転式圧縮機の要部断面を示す断面図であ
る。なお図中の1〜17は前記従来例の構成部分と同一
または相当する構成部分である。図2は右が端軸受9の
正面図であり、9aは吐出弁、9bは吐出弁室である。
中央は仕切り板16の正面図であり、16aは端軸受9
の吐出弁室9bの最下部に連通する油抜き穴である。左
は吐出マフラー17の正面部であり、17aは仕切り板
16の油抜き穴16aより下方の位置に密閉容器1内と
連通する油抜き穴である。図3は圧縮要素を図1の矢印
A方向より見た正面図である。10aはシリンダ10に
設けられた圧縮ガスの流路であり、密閉容器1内に水平
方向より下方で密閉容器に対する法線より、下方向に吐
出されるように設けてある。図4は吐出方向θと冷凍回
路内の油循環量の関係グラフである。[Embodiment 1] An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a cross-sectional view showing a main part cross section of the rotary compressor. In the drawings, reference numerals 1 to 17 denote the same or corresponding components as those of the conventional example. FIG. 2 is a front view of the end bearing 9 on the right side, where 9a is a discharge valve, and 9b is a discharge valve chamber.
The center is a front view of the partition plate 16 and 16a is the end bearing 9
Is an oil drain hole communicating with the lowermost part of the discharge valve chamber 9b. The left side is the front part of the discharge muffler 17, and 17 a is an oil drain hole communicating with the inside of the sealed container 1 at a position below the oil drain hole 16 a of the partition plate 16. FIG. 3 is a front view of the compression element viewed from the direction of arrow A in FIG. Reference numeral 10a denotes a compressed gas passage provided in the cylinder 10, and is provided in the closed container 1 so as to be discharged below the horizontal direction and below the normal to the closed container. FIG. 4 is a graph showing the relationship between the discharge direction θ and the amount of oil circulation in the refrigeration circuit.
【0011】この実施例は上記のように構成されている
ので、摺動部の潤滑油は、圧縮ガスとともに吐出され吐
出弁室9bの斜線部に貯まる。この油は吐出弁室9bの
最下部に連通した仕切り板16の穴16aより抜け、吐
出マフラー17に流入する。吐出マフラー17に貯まる
油は、吐出マフラー17に設けた穴17aを通り、密閉
容器1内に放出される。このため、吐出弁室9b、吐出
マフラー17内から圧縮ガスとともに吐出される潤滑油
は減少する。Since this embodiment is configured as described above, the lubricating oil of the sliding portion is discharged together with the compressed gas and stored in the hatched portion of the discharge valve chamber 9b. This oil passes through the hole 16a of the partition plate 16 communicating with the lowermost part of the discharge valve chamber 9b, and flows into the discharge muffler 17. The oil stored in the discharge muffler 17 is discharged into the closed container 1 through a hole 17a provided in the discharge muffler 17. Therefore, the amount of lubricating oil discharged together with the compressed gas from the discharge valve chamber 9b and the discharge muffler 17 decreases.
【0012】また、圧縮ガスを水平方向より下方で密閉
容器1側面に対する法線方向より下方向に吐出するガス
流路をシリンダに設けたため、吐出された圧縮ガスと潤
滑油の混合物は、密閉容器1側壁面との衝突による分離
作用より分離される。また密閉容器1側面に対し、法線
方向より下方向にしたことより、衝突後、吐出パイプ1
5の設けてある位置である圧縮機上部方向へ潤滑油が飛
散する量が少なくなるため、冷凍回路内へ流出する油循
環量が少なくなる。また、図4の実験にて求めた吐出方
向と冷凍回路内油循環量の関係でも法線との角度θが大
きくなると冷凍回路内油循環量が少なくなることがわか
る。Further, since the cylinder is provided with a gas passage for discharging the compressed gas below the horizontal direction and below the normal direction to the side surface of the closed container 1, the mixture of the discharged compressed gas and the lubricating oil is supplied to the closed container. It is separated by the separating action due to the collision with one side wall surface. In addition, since the side of the closed container 1 is located below the normal direction, after the collision, the discharge pipe 1
Since the amount of lubricating oil scattered toward the upper part of the compressor, which is the position where 5 is provided, is reduced, the amount of oil circulating into the refrigeration circuit is reduced. Also, the relationship between the discharge direction and the amount of oil circulation in the refrigeration circuit obtained in the experiment of FIG. 4 shows that the larger the angle θ with the normal line, the smaller the amount of oil circulation in the refrigeration circuit.
【0013】[0013]
【発明の効果】以上のように、この発明によれば、圧縮
ガスを水平方向より下方で密閉容器側面に対する法線方
向より下方向に吐出するガス流路をシリンダに設けたた
め、吐出された圧縮ガスと潤滑油の混合物は、密閉容器
側壁面との衝突による分離作用より分離され、衝突後、
吐出パイプの設けてある位置である圧縮機上部方向へ潤
滑油が飛散する量が少なくなるため、冷凍回路内へ流出
する油循環量が少なくなる。 As described above, according to the present invention, the compression
Gas normal below the horizontal direction to the side of the sealed container below the horizontal direction
The cylinder has a gas flow path that discharges downward from the direction
The mixture of compressed gas and lubricating oil
Separated by the separation effect due to collision with the side wall surface, after collision,
Lubricate upwards the compressor where the discharge pipe is located
Oil spills into the refrigeration circuit due to reduced amount of oil splattered
The amount of circulating oil is reduced.
【0014】[0014]
【図面の簡単な説明】[Brief description of the drawings]
【図1】この発明の一実施例による回転式圧縮機の要部
断面図である。FIG. 1 is a sectional view of a main part of a rotary compressor according to an embodiment of the present invention.
【図2】この発明の一実施例による回転式圧縮機の端軸
受、仕切り板、吐出マフラーの正面図である。FIG. 2 is a front view of an end bearing, a partition plate, and a discharge muffler of the rotary compressor according to one embodiment of the present invention.
【図3】この発明の一実施例による回転式圧縮機の圧縮
要素部の正面図である。FIG. 3 is a front view of a compression element portion of the rotary compressor according to one embodiment of the present invention.
【図4】この発明の一実施例による回転式圧縮機の吐出
ガス吹出し角度と油循環量の関係図である。FIG. 4 is a diagram showing a relationship between a discharge gas blowing angle and an oil circulation amount of the rotary compressor according to one embodiment of the present invention.
【図5】従来の回転式圧縮機の要部断面図である。FIG. 5 is a sectional view of a main part of a conventional rotary compressor.
9 端軸受 9b 吐出弁室 16 仕切り板 16a 油抜き穴(第1の) 17 吐出マフラー 17a 油抜き穴(第2の) 10 シリンダ 10a 圧縮ガス流路 9 End bearing 9b Discharge valve chamber 16 Partition plate 16a Oil drain hole (first) 17 Discharge muffler 17a Oil drain hole (second) 10 Cylinder 10a Compressed gas flow path
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) F04C 23/00 - 29/10 331 F04C 18/356 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) F04C 23/00-29/10 331 F04C 18/356
Claims (1)
れた電動要素及び圧縮要素と、前記圧縮要素のシリンダ
とローリングピストンによって圧縮された圧縮ガスを前
記密閉容器内に放出する前記シリンダに設けたガス流路
と、前記円筒状の密閉容器の一端部で、中心より上部に
設け、密閉容器内の圧縮ガスを密閉容器外へ吐出する開
口部とを備えた回転式圧縮機において、 前記シリンダのガス流路の入り口開口部を、円筒状密閉
容器の円筒方向中心線を含む水平面より下方に設け、前
記シリンダのガス流路を前記円筒方向中心線の一点と前
記ガス流路入り口開口部を結ぶ、前記密閉容器側面に対
する法線方向より下方向に向けたことを特徴とする回転
式圧縮機。 (1) A container housed in a horizontally closed cylindrical container.
Electric element and compression element, and cylinder of the compression element
And the compressed gas compressed by the rolling piston
A gas passage provided in the cylinder for discharging into the closed container;
And at one end of the cylindrical closed container, above the center
To open the compressed gas inside the closed container
A rotary compressor provided with an opening , wherein an inlet opening of the gas flow path of the cylinder is sealed in a cylindrical shape.
Install below the horizontal plane containing the cylindrical center line of the container.
The gas flow path of the cylinder is located one point before the center line in the cylinder direction.
The side of the closed vessel, which connects the gas flow path inlet opening,
Characterized by turning downward from the normal direction
Type compressor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4073662A JP3007746B2 (en) | 1992-03-30 | 1992-03-30 | Rotary compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4073662A JP3007746B2 (en) | 1992-03-30 | 1992-03-30 | Rotary compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05280483A JPH05280483A (en) | 1993-10-26 |
JP3007746B2 true JP3007746B2 (en) | 2000-02-07 |
Family
ID=13524707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4073662A Expired - Lifetime JP3007746B2 (en) | 1992-03-30 | 1992-03-30 | Rotary compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3007746B2 (en) |
-
1992
- 1992-03-30 JP JP4073662A patent/JP3007746B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH05280483A (en) | 1993-10-26 |
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