JPH0544552Y2 - - Google Patents

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Publication number
JPH0544552Y2
JPH0544552Y2 JP7643288U JP7643288U JPH0544552Y2 JP H0544552 Y2 JPH0544552 Y2 JP H0544552Y2 JP 7643288 U JP7643288 U JP 7643288U JP 7643288 U JP7643288 U JP 7643288U JP H0544552 Y2 JPH0544552 Y2 JP H0544552Y2
Authority
JP
Japan
Prior art keywords
oil
crankshaft
separation chamber
bearing
chamber
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
Application number
JP7643288U
Other languages
Japanese (ja)
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JPH01179183U (en
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
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Priority to JP7643288U priority Critical patent/JPH0544552Y2/ja
Publication of JPH01179183U publication Critical patent/JPH01179183U/ja
Application granted granted Critical
Publication of JPH0544552Y2 publication Critical patent/JPH0544552Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は冷凍機等に好適な往復動型圧縮機に関
する。
[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a reciprocating compressor suitable for refrigerators and the like.

(従来の技術及びその課題) 従来の往復動型圧縮機の1例が第5図及び第6
図に示されている。
(Prior art and its problems) An example of a conventional reciprocating compressor is shown in Figures 5 and 6.
As shown in the figure.

第5図において、クランク室1の底に貯溜され
た潤滑油2はクランクシヤフト3を回転させるこ
とによつてコネクテイングロツド4の大端部4a
により跳ね上げられ、コネクテイングロツド4の
大端部4a及び小端部4b,ピストン5、クラン
クシヤフト3の軸受6,7、シヤフトシール8、
シリンダ9等の潤滑個所に給油されるようになつ
ている。なお、10はシリンダ室、11はクラン
クケース、12は軸受カバー、13は弁板、14
はシリンダヘツド、15は電磁クラツチ16を内
蔵するプーリ、17は配管接続金具である。
In FIG. 5, the lubricating oil 2 stored at the bottom of the crank chamber 1 is transferred to the large end 4a of the connecting rod 4 by rotating the crankshaft 3.
The large end 4a and small end 4b of the connecting rod 4, the piston 5, the bearings 6 and 7 of the crankshaft 3, the shaft seal 8,
Lubrication points such as the cylinder 9 are supplied with oil. In addition, 10 is a cylinder chamber, 11 is a crankcase, 12 is a bearing cover, 13 is a valve plate, 14
1 is a cylinder head, 15 is a pulley incorporating an electromagnetic clutch 16, and 17 is a pipe connection fitting.

クランク室1はピストン5とシリンダ9との隙
間を通つて流入するブローバイガスによつて昇圧
するのを防ぐため、第6図に示すように、均圧穴
18を介して吸入キヤビテイ19に連通せしめら
れている。
In order to prevent the crank chamber 1 from increasing in pressure due to blow-by gas flowing through the gap between the piston 5 and the cylinder 9, the crank chamber 1 is communicated with an intake cavity 19 through a pressure equalizing hole 18, as shown in FIG. ing.

しかして、クランク室1内に飛散している潤滑
油のミストはクランク室1内のガスと一緒に均圧
穴18を経て吸入キヤビテイ19に入りここで吸
入通路20から流入する吸入ガスと合流して弁板
13に穿設された孔21を経てシリンダヘツド1
4に形成された吸入チヤンバ22に入り、次い
で、弁板13に穿設された吸入口23から吸入弁
24を押し開けてシリンダ室10内に入る。シリ
ンダ室10内に入つた潤滑油の一部はピストン5
とシリンダ9との隙間を通つてクランク室1内に
戻るが、その大部分は吐出ガスとともに吐出口2
5から吐出弁26を押し開けて吐出チヤンバ27
に入り、ここから図示しない吐出通路を経て外部
に排出される。
Therefore, the lubricating oil mist scattered in the crank chamber 1 enters the suction cavity 19 through the pressure equalization hole 18 together with the gas in the crank chamber 1, where it merges with the suction gas flowing in from the suction passage 20. Cylinder head 1 through hole 21 drilled in valve plate 13
4, and then enters into the cylinder chamber 10 by pushing open the suction valve 24 through the suction port 23 formed in the valve plate 13. A portion of the lubricating oil that has entered the cylinder chamber 10 is transferred to the piston 5.
The gas returns to the crank chamber 1 through the gap between the cylinder 9 and the cylinder 9, but most of it returns to the discharge port 2 along with the discharge gas.
5, push open the discharge valve 26 and open the discharge chamber 27.
From there, it is discharged to the outside via a discharge passage (not shown).

この油上り現象を防止するためには、クランク
室1の容積を十分に大きくすれば良いが、これは
圧縮機が大型、大重量となる不具合がある。
In order to prevent this oil rising phenomenon, the volume of the crank chamber 1 may be made sufficiently large, but this has the disadvantage that the compressor becomes large and heavy.

そこで、均圧穴18に流入する潤滑油を低減す
るため、均圧穴18を遮蔽部材で被覆したものが
提案されたが、これによつてもクランク室1内の
潤滑油量の減少は避け難く、圧縮機の急激な運転
状態の変化に際し、給油不足による異常摩耗や焼
付が生じるおそれがあつた。
Therefore, in order to reduce the lubricating oil flowing into the pressure equalizing hole 18, it has been proposed to cover the pressure equalizing hole 18 with a shielding member, but even with this, it is difficult to avoid a decrease in the amount of lubricating oil in the crank chamber 1. When the operating conditions of the compressor suddenly change, abnormal wear or seizure may occur due to insufficient oil supply.

(課題を解決するための手段) 本考案は上記課題を解決するために提案された
ものであつて、その要旨とするところは、クラン
クケースに軸受を介して支承されたクランクシヤ
フトの一方の端及びこれを支承する軸受が軸受カ
バーにより被覆された往復動型圧縮機において、
上記クランクシヤフトの一方の端面と上記軸受と
上記クランクケースと上記軸受カバーによつて円
盤状の油分離室を形成し、吸入キヤビテイに一端
が開口する均圧通路の他端を上記分離室内におい
て上記クランクシヤフトの軸芯の近傍に開口さ
せ、上記分離室の外周面に一端が開口する1又は
2以上の油戻し孔の他端をクランク室に開口さ
せ、上記分離室内で回転する油を上記油戻し孔に
案内するガイド羽根を設けたことを特徴とする往
復動型圧縮機にある。
(Means for Solving the Problems) The present invention has been proposed to solve the above problems, and its gist is that one end of the crankshaft is supported in the crankcase via a bearing. and a reciprocating compressor in which the bearing supporting the compressor is covered with a bearing cover,
One end face of the crankshaft, the bearing, the crankcase, and the bearing cover form a disc-shaped oil separation chamber, and the other end of the pressure equalization passage, one end of which opens into the suction cavity, is connected to the oil separation chamber within the separation chamber. One or more oil return holes are opened in the vicinity of the axis of the crankshaft, one end of which is opened in the outer peripheral surface of the separation chamber, and the other end of the oil return hole is opened into the crank chamber, and the oil rotating in the separation chamber is transferred to the oil return hole. A reciprocating compressor is characterized in that it is provided with guide vanes that guide it to a return hole.

(作用) 本考案においては、上記構成を具えているた
め、クランク室内の潤滑油のミストはガスと一緒
に軸受の隙間を通つて油分離室内に流入し、分離
室内でクランクシヤフトの端面及び軸受の回転面
によつて付勢されて回転することにより遠心力を
受けて放射方向に飛ばされる。そして、分離室の
外周面に沿つて回転する油はガイド羽根に衝突し
て流線を変えられて油戻し孔に入り、この油戻し
孔を通つてクランク室に戻る。一方、分離室内の
クランクシヤフトの軸芯近傍の油分の少ないガス
のみが均圧通路を通つて吸入キヤビテイに流入す
る。
(Function) Since the present invention has the above-mentioned configuration, the lubricant mist in the crank chamber flows together with gas into the oil separation chamber through the gap between the bearings, and the end face of the crankshaft and the bearing inside the separation chamber. By rotating under the force of the rotating surface, it receives centrifugal force and is blown away in the radial direction. The oil rotating along the outer circumferential surface of the separation chamber collides with the guide blade, changes its streamline, enters the oil return hole, and returns to the crank chamber through the oil return hole. On the other hand, only gas with a low oil content near the axis of the crankshaft in the separation chamber flows into the suction cavity through the pressure equalization passage.

(実施例) 本考案の1実施例が第1図ないし第4図に示さ
れている。
(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 4.

クランクシヤフト3の一方の端及びこれを支承
する軸受6が軸受カバー12によつて被覆され、
クランクシヤフト3の一方の端面、軸受6、クラ
ンクケース11及び軸受カバー12によつて円盤
状の油分離室30が形成されている。この油分離
室30の外周面には複数の油戻し孔31が開口
し、この油戻し孔31の他端はクランク室1に開
口している。クランクシヤフト3の端面にはその
軸芯に沿つて伸びる凹所32が穿設され、この凹
所32内に軸受カバー12の中央部内面に突設さ
れた突起33が挿入されている。この突起32の
先端に開口する均圧孔34の他端は吸入キヤビテ
イ19に開口している。また、軸受カバー12の
内面には複数(図には3ケ)のガイド羽根35が
突設され、このガイド羽根35は第2図に矢印で
示すシヤフト3の回転方向に対して90°又はそれ
以下の角度だけ傾斜してその外周端は油戻し孔3
1の開口に近接してその回転方向側下流に位置し
ている。
One end of the crankshaft 3 and the bearing 6 supporting it are covered with a bearing cover 12,
A disk-shaped oil separation chamber 30 is formed by one end surface of the crankshaft 3, the bearing 6, the crankcase 11, and the bearing cover 12. A plurality of oil return holes 31 are opened on the outer peripheral surface of this oil separation chamber 30, and the other end of these oil return holes 31 is opened to the crank chamber 1. A recess 32 extending along the axis of the crankshaft 3 is formed in the end face of the crankshaft 3, and a protrusion 33 protruding from the inner surface of the center portion of the bearing cover 12 is inserted into the recess 32. The other end of the pressure equalizing hole 34 that opens at the tip of the projection 32 opens into the suction cavity 19 . Further, a plurality of (three in the figure) guide blades 35 are protruded from the inner surface of the bearing cover 12, and the guide blades 35 are arranged at an angle of 90° or more with respect to the rotational direction of the shaft 3 shown by the arrow in FIG. It is inclined by the following angle and its outer peripheral end is the oil return hole 3
It is located close to the opening of No. 1 and downstream in the direction of rotation thereof.

なお、分離室30は玉軸受6の隙間を介してク
ランク室1に連通するが、玉軸受6に代えてすべ
り軸受を用いたときはクランクケース11に穿設
された凹溝等を介してクランク室1に連通させれ
ば良い。
The separation chamber 30 communicates with the crank chamber 1 through a gap between the ball bearings 6, but when a sliding bearing is used instead of the ball bearing 6, the separation chamber 30 communicates with the crank chamber 1 through a groove formed in the crankcase 11. All you have to do is connect it to room 1.

他の構成は第5図及び第6図に示す従来のもの
と同様であり、対応する部材には同じ符号が付さ
れている。
The rest of the structure is similar to the conventional one shown in FIGS. 5 and 6, and corresponding members are given the same reference numerals.

しかして、クランク室1内に飛散している潤滑
油のミストはガスは一緒に軸受6の隙間を経て油
分離室30内に入り、油分離室30内でクランク
シヤフト3及び玉軸受6のインナーレースの回転
に随伴して回転する。そして、その回転による遠
心力を受けて放射方向に飛ばされて油分離室30
の外周面に溜る。従つて、油分離室30のクラン
クシヤフト3の軸芯の近傍、特に凹所32内は油
分の少ないガスとなる。この油分の少ないガスは
凹所32内に開口する均圧孔34に入り、均圧孔
34内を通つて吸入キヤビテイ19に流入する。
油分離室30の外周面に溜まつた潤滑油36は、
第2図に示すように、外周面に沿つて回転する
が、その際、ガイド羽根35に衝突して流線を変
えられることによつて掻き集められて油戻し孔3
1内の開口に流入し、油戻し孔31を通つてクラ
ンク室1内に戻りその底に溜る。
Therefore, the lubricating oil mist scattered in the crank chamber 1 enters the oil separation chamber 30 through the gap between the bearings 6, and the inner parts of the crankshaft 3 and ball bearings 6 in the oil separation chamber 30. It rotates as the lace rotates. Then, the oil is blown away in a radial direction by the centrifugal force caused by the rotation, and the oil separation chamber 30
It accumulates on the outer surface of the. Therefore, the oil separation chamber 30 in the vicinity of the axis of the crankshaft 3, particularly in the recess 32, contains gas with a low oil content. This oil-poor gas enters the pressure equalization hole 34 opening in the recess 32 and flows into the suction cavity 19 through the pressure equalization hole 34.
The lubricating oil 36 accumulated on the outer peripheral surface of the oil separation chamber 30 is
As shown in FIG. 2, it rotates along the outer circumferential surface, but at that time, it collides with the guide vane 35 and changes its streamline, which scrapes the oil into the oil return hole 3.
The oil flows into the opening in the crank chamber 1, returns to the crank chamber 1 through the oil return hole 31, and accumulates at the bottom thereof.

(考案の効果) 本考案においては、クランクシヤフトの一方の
端面と軸受とクランクケースと軸受カバーによつ
て円盤状の油分離室を形成し、吸入キヤビテイに
一端が開口する均圧通路の他端を分離室内におい
てクランクシヤフトの軸芯の近傍に開口させ、分
離室の外周面に一端が開口する1又は2以上の油
戻し孔の他端をクランク室に開口させ、分離室内
で回転する油を油戻し孔に案内するガイド羽根を
設けたため、クランク室内の潤滑油のミストはガ
スと一緒に軸受の隙間を通つて油分離室内に流入
し、分離室内でクランクシヤフトの端面及び軸受
の回転面によつて付勢されて回転することにより
遠心力を受けて放射方向に飛ばされる。そして、
分離室の外周面に沿つて回転する油はガイド羽根
に衝突して流線を変えられて油戻し孔に入り、こ
の油戻し孔を通つてクランク室に戻る。
(Effects of the invention) In the invention, a disc-shaped oil separation chamber is formed by one end face of the crankshaft, the bearing, the crankcase, and the bearing cover, and the other end of the pressure equalizing passage opens at one end into the suction cavity. is opened near the axis of the crankshaft in the separation chamber, and one or more oil return holes, one end of which is open on the outer peripheral surface of the separation chamber, the other end of which is opened in the crank chamber, and the oil rotating in the separation chamber is Because a guide vane is provided to guide the oil return hole, the lubricating oil mist in the crank chamber flows together with the gas into the oil separation chamber through the gap in the bearing, and inside the separation chamber, the lubricant mist flows onto the end face of the crankshaft and the rotating surface of the bearing. By being biased and rotated, it receives centrifugal force and is blown away in a radial direction. and,
The oil rotating along the outer circumferential surface of the separation chamber collides with the guide vane, changes its streamline, enters the oil return hole, and returns to the crank chamber through the oil return hole.

従つて、分離室内のクランクシヤフトの軸芯近
傍の油分の少ないガスのみが均圧通路を通つて吸
入キヤビテイに流入するので、均圧通路を通る潤
滑油が少なくなる。
Therefore, only the gas with a low oil content near the axis of the crankshaft in the separation chamber flows into the suction cavity through the pressure equalization passage, so that less lubricating oil passes through the pressure equalization passage.

この結果、クランク室内の潤滑油量の減少を防
止できるので、圧縮機の運転状態が急激に変化し
た場合でも各摺動部への給油量の不足に基づく異
常摩耗や焼付を防止出来る。
As a result, it is possible to prevent the amount of lubricating oil in the crank chamber from decreasing, so even if the operating conditions of the compressor suddenly change, it is possible to prevent abnormal wear and seizure due to insufficient amount of oil supplied to each sliding part.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図ないし第4図は本考案の1実施例を示
し、第1図は要部の縦断面図、第2図は作用説明
図、第3図は軸受カバーの側面図、第4図は第3
図の−矢に沿う矢視図である。第5図及び第
6図は従来の往復動型圧縮機の1例を示し、第5
図は往復動型圧縮機の縦断面図、第6図は要部の
縦断面図である。 11……クランクケース、6……軸受、3……
クランクシヤフト、30……油分離室、1……ク
ランク室、19……吸入キヤビテイ、34……均
圧通路、31……油戻し孔、35……ガイド羽
根。
Figures 1 to 4 show one embodiment of the present invention, with Figure 1 being a vertical sectional view of the main parts, Figure 2 being an explanatory diagram of the operation, Figure 3 being a side view of the bearing cover, and Figure 4 being a side view of the bearing cover. Third
It is an arrow view along the - arrow of a figure. 5 and 6 show an example of a conventional reciprocating compressor.
The figure is a longitudinal sectional view of the reciprocating compressor, and FIG. 6 is a longitudinal sectional view of the main parts. 11...Crankcase, 6...Bearing, 3...
Crankshaft, 30... Oil separation chamber, 1... Crank chamber, 19... Suction cavity, 34... Pressure equalization passage, 31... Oil return hole, 35... Guide vane.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] クランクケースに軸受を介して支承されたクラ
ンクシヤフトの一方の端及びこれを支承する軸受
が軸受カバーにより被覆された往復動型圧縮機に
おいて、上記クランクシヤフトの一方の端面と上
記軸受と上記クランクケースと上記軸受カバーに
よつて円盤状の油分離室を形成し、吸入キヤビテ
イに一端が開口する均圧通路の他端を上記分離室
内において上記クランクシヤフトの軸芯の近傍に
開口させ、上記分離室の外周面に一端が開口する
1又は2以上の油戻し孔の他端をクランク室に開
口させ、上記分離室内で回転する油を上記油戻し
孔に案内するガイド羽根を設けたことを特徴とす
る往復動型圧縮機。
In a reciprocating compressor in which one end of a crankshaft supported by a crankcase via a bearing and a bearing supporting the crankshaft are covered with a bearing cover, one end face of the crankshaft, the bearing, and the crankcase are covered. and the bearing cover form a disk-shaped oil separation chamber, one end of which opens into the suction cavity, and the other end of the pressure equalizing passage which opens near the axis of the crankshaft within the separation chamber. One or more oil return holes have one end open on the outer circumferential surface of the oil return hole, the other end of which opens into the crank chamber, and a guide vane is provided for guiding oil rotating in the separation chamber to the oil return hole. A reciprocating compressor.
JP7643288U 1988-06-10 1988-06-10 Expired - Lifetime JPH0544552Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7643288U JPH0544552Y2 (en) 1988-06-10 1988-06-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7643288U JPH0544552Y2 (en) 1988-06-10 1988-06-10

Publications (2)

Publication Number Publication Date
JPH01179183U JPH01179183U (en) 1989-12-22
JPH0544552Y2 true JPH0544552Y2 (en) 1993-11-11

Family

ID=31301460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7643288U Expired - Lifetime JPH0544552Y2 (en) 1988-06-10 1988-06-10

Country Status (1)

Country Link
JP (1) JPH0544552Y2 (en)

Also Published As

Publication number Publication date
JPH01179183U (en) 1989-12-22

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