JPH0723596Y2 - Rotary compressor - Google Patents

Rotary compressor

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Publication number
JPH0723596Y2
JPH0723596Y2 JP11718688U JP11718688U JPH0723596Y2 JP H0723596 Y2 JPH0723596 Y2 JP H0723596Y2 JP 11718688 U JP11718688 U JP 11718688U JP 11718688 U JP11718688 U JP 11718688U JP H0723596 Y2 JPH0723596 Y2 JP H0723596Y2
Authority
JP
Japan
Prior art keywords
oil
eccentric
drive shaft
bearing
rotary compressor
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
JP11718688U
Other languages
Japanese (ja)
Other versions
JPH0239590U (en
Inventor
隆 前川
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP11718688U priority Critical patent/JPH0723596Y2/en
Publication of JPH0239590U publication Critical patent/JPH0239590U/ja
Application granted granted Critical
Publication of JPH0723596Y2 publication Critical patent/JPH0723596Y2/en
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、回転式圧縮機に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rotary compressor.

(従来の技術) 従来、回転式圧縮機は、例えば実開昭62-171682号公報
に記載され、かつ、第5図に示したごとく、シリンダ
(CL)と、該シリンダ(CL)の上下部位に配設されたフ
ロント及びリヤヘッド(FH)(RH)と、前記シリンダ
(CL)内に配設されたローラ(R)とで圧縮要素(C)
を形成して、該圧縮要素(C)のローラ(R)内に、モ
ータ側に結合した駆動軸(KS)の偏心部(E)を挿嵌す
ると共に、この駆動軸(KS)を、前記各ヘッド(FH)
(RH)に設けた軸受部(B1)(B2)で軸受支持する一
方、前記リヤヘッド(RH)に設けた軸受部(B2)の上部
側端面に、スラスト受面(S)を形成して、このスラス
ト受面(S)で前記偏心部(E)の下端面を支持するよ
うにしている。
(Prior Art) Conventionally, a rotary compressor is disclosed in, for example, Japanese Utility Model Laid-Open No. 62-171682, and as shown in FIG. 5, a cylinder (CL) and upper and lower parts of the cylinder (CL). The front and rear heads (FH) (RH) arranged in the cylinder and the roller (R) arranged in the cylinder (CL), the compression element (C)
And the eccentric part (E) of the drive shaft (KS) coupled to the motor side is inserted into the roller (R) of the compression element (C), and the drive shaft (KS) is Each head (FH)
While bearings are supported by bearings (B1) and (B2) provided on (RH), a thrust receiving surface (S) is formed on the upper end surface of the bearing (B2) provided on the rear head (RH). The thrust receiving surface (S) supports the lower end surface of the eccentric portion (E).

また、前記駆動軸(KS)の軸心内部に給油通路(a)を
設けると共に、前記駆動軸(KS)の偏心部(E)に油孔
(b)を形成して、この油孔(b)を介して前記給油通
路(a)に汲上られた油を、前記偏心部(e)とローラ
(R)との摺接面及び前記スラスト受面(S)に給油す
るようにしている。
Further, an oil supply passage (a) is provided inside the shaft center of the drive shaft (KS), and an oil hole (b) is formed in the eccentric portion (E) of the drive shaft (KS). ), The oil pumped up to the oil supply passage (a) is supplied to the sliding contact surface between the eccentric portion (e) and the roller (R) and the thrust receiving surface (S).

(考案が解決しようとする課題) ところで、以上のような回転式圧縮機においては、前記
偏心部(E)の下端面が支持される前記軸受部(B2)の
スラスト受面(S)には、前記駆動軸(KS)及び該駆動
軸(KS)に結合されるモータロータの自重に基づく大き
なスラスト荷重がかかるのであるが、前述した従来のも
のでは、前記油孔(b)を介して前記スラスト受面
(S)に油を単に供給しているにすぎず、前記偏心部
(E)とスラスト受面(S)との間の強固な面密接部位
に十分な油膜を形成することが困難となり、このため、
前記スラスト受面(S)での給油量が不足気味となっ
て、該スラスト受面(S)での摩擦抵抗が大となり、動
力損失を招くと共に、摩耗粉が前記偏心部(E)やロー
ラ(R)の回動を阻害するといった問題が起こるのであ
った。
(Problems to be solved by the invention) By the way, in the rotary compressor as described above, the thrust receiving surface (S) of the bearing portion (B2) on which the lower end surface of the eccentric portion (E) is supported is A large thrust load is applied due to the self-weight of the drive shaft (KS) and the motor rotor coupled to the drive shaft (KS). However, in the above-described conventional one, the thrust load is applied through the oil hole (b). Since the oil is simply supplied to the receiving surface (S), it becomes difficult to form a sufficient oil film in a strong surface contact portion between the eccentric part (E) and the thrust receiving surface (S). ,For this reason,
The amount of oil supplied on the thrust receiving surface (S) tends to be inadequate, the friction resistance on the thrust receiving surface (S) becomes large, and power loss is caused. There was a problem that the rotation of (R) was hindered.

本考案は以上のような問題に鑑みてなしたもので、その
目的は、前記駆動軸の偏心部と前記リヤヘッドにおける
軸受部との摺接面に積極的に給油を行うことができて、
動力損失等を少なくできる回転式圧縮機を提供すること
にある。
The present invention has been made in view of the above problems, and an object thereof is to positively supply oil to a sliding contact surface between an eccentric portion of the drive shaft and a bearing portion of the rear head,
An object is to provide a rotary compressor that can reduce power loss and the like.

(課題を解決するための手段) 上記目的を達成するために、本考案では、ケーシング
(1)の上方に、偏心部(41)をもつ駆動軸(4)を備
えたモータ(2)を配設し、このモータ(2)の下方
に、前記駆動軸(4)を支持するジャーナル軸受(5)
(6)をもったフロントヘッド(32)及びリヤヘッド
(33)とシリンダ(31)とをもった圧縮要素(3)を配
設した回転式圧縮機において、前記リヤヘッド(33)に
おけるジャーナル軸受(6)のシリンダ側端面に、前記
偏心部(41)を支持するスラスト軸受部(61)を設け
て、このスラスト軸受部(61)の受面に、放射状に延び
る複数の油溝(62)を設けると共に、これら各油溝(6
2)の半径方向外端を、前記偏心部(41)における最小
径部より半径方向外方で、かつ、最大径部より半径方向
内方に位置させていることを特徴とするものである。
(Means for Solving the Problem) In order to achieve the above object, in the present invention, a motor (2) having a drive shaft (4) having an eccentric portion (41) is arranged above a casing (1). A journal bearing (5) is provided below the motor (2) to support the drive shaft (4).
In a rotary compressor having a front head (32) having (6) and a compression element (3) having a rear head (33) and a cylinder (31), a journal bearing (6) in the rear head (33) is provided. ), A thrust bearing portion (61) for supporting the eccentric portion (41) is provided on the cylinder side end surface, and a plurality of radially extending oil grooves (62) are provided on the receiving surface of the thrust bearing portion (61). Together with each of these oil grooves (6
The outer end in the radial direction of 2) is located radially outward of the smallest diameter portion of the eccentric portion (41) and radially inward of the largest diameter portion of the eccentric portion (41).

(作用) 以上の回転式圧縮機においては、前記リヤヘッド(33)
側に設けたジャーナル軸受(6)のスラスト軸受部(6
1)に、放射状に延びる複数の油溝(62)が形成され、
これら各油溝(62)の半径方向外端が、前記駆動軸
(4)における偏心部(41)の最小径部より半径方向外
方で、かつ、最大径部より半径方向内方側に位置されて
いるために、前記偏心部(41)の最小径部が前記各油溝
(62)と対向したとき、該油溝(62)内に前記シリンダ
(31)側から油が注入され、前記偏心部(41)の最大径
部が回転位置されたとき、その遠心力で油圧が発生し
て、この圧力油が前記スラスト軸受部(61)の受面に積
極的に給油されるのである。
(Operation) In the above rotary compressor, the rear head (33)
Thrust bearing part (6) of the journal bearing (6) provided on the side
A plurality of radially extending oil grooves (62) are formed in 1),
The outer ends of the oil grooves (62) in the radial direction are located radially outward of the minimum diameter portion of the eccentric portion (41) of the drive shaft (4) and radially inward of the maximum diameter portion. Therefore, when the minimum diameter part of the eccentric part (41) faces each oil groove (62), oil is injected into the oil groove (62) from the cylinder (31) side, When the maximum diameter portion of the eccentric portion (41) is rotationally positioned, the centrifugal force causes hydraulic pressure to be positively supplied to the receiving surface of the thrust bearing portion (61).

(実施例) 実施例について、図面を参照して説明する。(Example) An example will be described with reference to the drawings.

第4図に示した回転式圧縮機は、密閉ケーシング(1)
の内方上部側に、ステータ(21)とロータ(22)とから
成るモータ(2)を配設すると共に、このモータ(2)
の下部側に、シリンダ(31)と、該シリンダ(31)の上
下部位に対向状に配設したフロント及びリヤヘッド(3
2)(33)と、前記シリンダ(31)の内部に回転自由に
設けたローラ(34)とから成る圧縮要素(3)を配設す
る一方、前記モータ(2)のロータ(22)に結合された
駆動軸(4)の長さ方向中間に偏心部(41)を設け、該
偏心部(41)を前記ローラ(34)に挿嵌させて、前記駆
動軸(4)に伴う前記ローラ(34)の偏心回転により、
前記シリンダ(31)内において吸入流体を圧縮するよう
にしている。
The rotary compressor shown in FIG. 4 has a hermetic casing (1).
A motor (2) including a stator (21) and a rotor (22) is disposed on the upper inner side of the motor, and the motor (2) is provided.
On the lower side of the cylinder (31), and front and rear heads (3) that are arranged so as to face the upper and lower parts of the cylinder (31).
2) A compression element (3) consisting of (33) and a roller (34) rotatably provided inside the cylinder (31) is arranged while being connected to the rotor (22) of the motor (2). The drive shaft (4) is provided with an eccentric part (41) in the middle in the longitudinal direction, and the eccentric part (41) is inserted into the roller (34) so that the roller (4) accompanying the drive shaft (4) is 34) eccentric rotation
The suction fluid is compressed in the cylinder (31).

また、前記各ヘッド(32)(33)には、それぞれ上下方
向に向けて一体状に突出する軸受筒部(32a)(33a)を
形成して、この各筒部(32a)(33a)の内部で前記駆動
軸(4)との間に、それぞれジャーナル軸受(5)
(6)を介装して、この各ジャーナル軸受(5)(6)
で前記駆動軸(4)を回転自由に軸受支持させている。
In addition, each of the heads (32) (33) is formed with a bearing tubular portion (32a) (33a) that integrally projects in the vertical direction, and the bearing tubular portion (32a) (33a) is formed. A journal bearing (5) inside the drive shaft (4), respectively.
These journal bearings (5) and (6) are mounted through (6).
Supports the drive shaft (4) in a freely rotatable manner.

更に、前記駆動軸(4)の軸心内部に、上下方向に向け
て延びる給油通路(42)を設けると共に、前記駆動軸
(4)の偏心部(41)に、該偏心部(41)の外周面に開
口し、前記給油通路(42)に連通する油孔(43)を形成
して、前記ケーシング(1)の底部油溜(1a)から前記
給油通路(42)に汲上られた油を、前記油孔(43)から
前記偏心部(41)とローラ(34)との摺接面などに給油
するようにしている。
Further, an oil supply passage (42) extending in the vertical direction is provided inside the shaft center of the drive shaft (4), and the eccentric part (41) of the eccentric part (41) is provided in the eccentric part (41) of the drive shaft (4). An oil hole (43) that opens to the outer peripheral surface and communicates with the oil supply passageway (42) is formed so that the oil pumped up from the bottom oil sump (1a) of the casing (1) into the oil supply passageway (42) is formed. Oil is supplied from the oil hole (43) to the sliding contact surface between the eccentric part (41) and the roller (34).

しかして以上のような回転式圧縮機において、第1図及
び第2図で明らかにしたごとく、前記リヤヘッド(33)
の軸受筒部(33a)に介装されたジャーナル軸受(6)
のシリンダ側端面に、前記駆動軸(4)における偏心部
(41)の下端面を支持するスラスト軸受部(61)を設け
て、このスラスト軸受部(61)の上部側受面に、放射状
に延びる複数の油溝(62)を設けると共に、これら各油
溝(62)の半径方向外端を、前記偏心部(41)における
最小径部より半径方向外方で、かつ、最大径部より半径
方向内方に位置させたのである。
Therefore, in the rotary compressor as described above, the rear head (33) is provided as shown in FIGS. 1 and 2.
Bearing (6) interposed in the bearing tube (33a) of the
A thrust bearing portion (61) for supporting the lower end surface of the eccentric portion (41) of the drive shaft (4) is provided on the cylinder-side end surface of the drive shaft (4), and the upper bearing surface of the thrust bearing portion (61) is radially arranged. A plurality of extending oil grooves (62) are provided, and the radial outer ends of these oil grooves (62) are radially outward from the minimum diameter portion of the eccentric portion (41) and are larger than the maximum diameter portion. It was located inward of the direction.

更に詳しくは、前記ジャーナル軸受(6)の上端面に、
スラスト軸受部(61)を設けて、該スラスト軸受部(6
1)の内,外周端縁側に、それぞれ円形状の周溝(63)
(64)を形成すると共に、これら各周溝(63)(64)間
に、放射状に延びる複数の油溝(62)を所定間隔置きに
形成して、これら各油溝(62)と周溝(63)(64)とで
囲まれる突出部位で前記偏心部(41)の下端面を受止め
るようになす。
More specifically, on the upper end surface of the journal bearing (6),
A thrust bearing portion (61) is provided, and the thrust bearing portion (6
Circular groove (63) in 1) on the outer edge side
(64) is formed, and a plurality of radially extending oil grooves (62) are formed between the respective circumferential grooves (63) (64) at predetermined intervals to form the respective oil grooves (62) and the circumferential groove. The projecting portion surrounded by (63) and (64) receives the lower end surface of the eccentric portion (41).

そして、前記ジャーナル軸受(6)の中心部から、前記
各油溝(62)の半径方向外端までの長さを(D1)、ま
た、前記偏心部(41)における前記駆動軸(4)の中心
から、その最大径部(41a)の半径方向端までの長さを
(D2)、更に前記偏心部(41)における前記駆動軸
(4)の中心から、その最小径部(41b)の半径方向外
端までの長さを(D3)としたとき、 D2>D1>D3 となるようにしたのである。
The length from the center of the journal bearing (6) to the radial outer end of each oil groove (62) is (D1), and the length of the drive shaft (4) in the eccentric part (41) is The length from the center to the radial end of the maximum diameter portion (41a) is (D2), and the radius of the minimum diameter portion (41b) from the center of the drive shaft (4) in the eccentric portion (41). When the length to the outer edge in the direction is (D3), D2>D1> D3.

斯くすることにより、前記駆動軸(4)における偏心部
(41)の最小径部(41b)が、その回転に伴い前記油溝
(62)と対向されて、該油溝(62)が開口されたとき、
この油溝(62)の内部に、前記偏心部(41)とローラ
(34)との摺接面に給油された油の一部が注入されるの
であり、また、前記油が注入された油溝(62)側に、前
記偏心部(41)の最大径部(41a)が回転位置されたと
き、前記油溝(62)が前記偏心部(41)の最大径部(41
a)の下面により閉鎖され、前記最大径部(41a)の摩擦
抵抗によって、該最大径部(41a)と同程度の周速が与
えられていた油が、その油溝(62)の閉鎖により急激に
速度と落とし、運動エネルギーが静圧力に変換されるこ
ととなって、前記油溝(62)内に油圧が発生し、この圧
力油が前記スラスト軸受部(61)の前記偏心部(41)に
対する受面に積極的に給油されるのである。
By doing so, the minimum diameter portion (41b) of the eccentric portion (41) of the drive shaft (4) is opposed to the oil groove (62) as it rotates, and the oil groove (62) is opened. When
A part of the oil supplied to the sliding contact surface between the eccentric part (41) and the roller (34) is injected into the oil groove (62), and the oil injected with the oil is also injected. When the maximum diameter portion (41a) of the eccentric portion (41) is rotationally positioned on the groove (62) side, the oil groove (62) causes the maximum diameter portion (41) of the eccentric portion (41).
The oil that was closed by the lower surface of a) and was given the peripheral speed of the same extent as the maximum diameter part (41a) by the frictional resistance of the maximum diameter part (41a) was closed by the oil groove (62). The speed drops rapidly, and the kinetic energy is converted into static pressure, whereby hydraulic pressure is generated in the oil groove (62), and this pressure oil causes the eccentric portion (41) of the thrust bearing portion (61). ) Will be positively refueled.

また、前記ジャーナル軸受(6)の上端受面には、第3
図に示したごとく、前記スラスト軸受部(61)の内,外
周端縁側に、それぞれ円形状の周溝(63)(64)を形成
すると共に、これら各周溝(63)(64)間で縦横方向
に、前記各油溝(62)を形成するようにしてもよい。
In addition, a third bearing is provided on the upper end receiving surface of the journal bearing (6).
As shown in the figure, in the thrust bearing portion (61), circular peripheral grooves (63) (64) are formed on the outer peripheral edge side, respectively, and between these peripheral grooves (63) (64). The oil grooves (62) may be formed in the vertical and horizontal directions.

(考案の効果) 以上説明したように、本考案の回転式圧縮機では、圧縮
要素(3)のリヤヘッド(33)側に設けたジャーナル軸
受(6)のシリンダ側端面に、駆動軸(4)の偏心部
(41)を支持するスラスト軸受部(61)を形成して、こ
のスラスト軸受部(61)の受面に、放射状に延びる複数
の油溝(62)を設けると共に、これら各油溝(62)の半
径方向外端を、前記偏心部(41)における最小径部より
半径方向外方で、かつ最大径部より半径方向内方に位置
させたから、前記スラスト軸受部(61)の受面に積極的
に給油することが可能となり、動力損失を少なくして、
効率を向上できるばかりか、良好な給油により摺動部の
摩耗粉を低減でき、信頼性を高め得るに至ったのであ
る。
(Effect of the Invention) As described above, in the rotary compressor of the present invention, the drive shaft (4) is attached to the cylinder side end surface of the journal bearing (6) provided on the rear head (33) side of the compression element (3). Forming a thrust bearing portion (61) for supporting the eccentric portion (41) of the oil bearing, and providing a plurality of radially extending oil grooves (62) on the receiving surface of the thrust bearing portion (61). Since the radially outer end of (62) is located radially outward of the smallest diameter portion of the eccentric portion (41) and radially inward of the largest diameter portion of the eccentric portion (41), the bearing of the thrust bearing portion (61) is received. It is possible to positively refuel the surface, reduce power loss,
Not only can the efficiency be improved, but also good lubrication can reduce the abrasion powder on the sliding portion, thus improving the reliability.

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

第1図は本考案にかかる回転式圧縮機の要部を示す断面
図、第2図は同圧縮機に使用するジャーナル軸受を示す
平面図、第3図は同ジャーナル軸受の他の実施例を示す
平面図、第4図は回転式圧縮機の全体構造を示す縦断面
図、第5図は従来例を示す断面図である。 (1)……ケーシング (2)……モータ (3)……圧縮要素 (31)……シリンダ (32)……フロントヘッド (33)……リヤヘッド (4)……駆動軸 (41)……偏心部 (5)……ジャーナル軸受 (6)……ジャーナル軸受 (61)……スラスト軸受部 (62)……油溝
FIG. 1 is a sectional view showing a main part of a rotary compressor according to the present invention, FIG. 2 is a plan view showing a journal bearing used in the compressor, and FIG. 3 is another embodiment of the journal bearing. FIG. 4 is a vertical sectional view showing the entire structure of the rotary compressor, and FIG. 5 is a sectional view showing a conventional example. (1) …… Casing (2) …… Motor (3) …… Compression element (31) …… Cylinder (32) …… Front head (33) …… Rear head (4) …… Drive shaft (41) …… Eccentric part (5) …… Journal bearing (6) …… Journal bearing (61) …… Thrust bearing part (62) …… Oil groove

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】ケーシング(1)の上方に、偏心部(41)
をもつ駆動軸(4)を備えたモータ(2)を配設し、こ
のモータ(2)の下方に、前記駆動軸(4)を支持する
ジャーナル軸受(5)(6)をもったフロントヘッド
(32)及びリヤヘッド(33)とシリンダ(31)とをもっ
た圧縮要素(3)を配設した回転式圧縮機において、前
記リヤヘッド(33)におけるジャーナル軸受(6)のシ
リンダ側端面に、前記偏心部(41)を支持するスラスト
軸受部(61)を設けて、このスラスト軸受部(61)の受
面に、放射状に延びる複数の油溝(62)を設けると共
に、これら各油溝(62)の半径方向外端を、前記偏心部
(41)における最小径部より半径方向外方で、かつ、最
大径部より半径方向内方に位置させていることを特徴と
する回転式圧縮機。
1. An eccentric part (41) above a casing (1).
A front head having a motor (2) provided with a drive shaft (4) having a shaft and having journal bearings (5) (6) supporting the drive shaft (4) below the motor (2). (32) In a rotary compressor having a compression element (3) having a rear head (33) and a cylinder (31), the cylinder side end surface of the journal bearing (6) in the rear head (33) is A thrust bearing portion (61) that supports the eccentric portion (41) is provided, and a plurality of radially extending oil grooves (62) are provided on the receiving surface of the thrust bearing portion (61), and the oil grooves (62) are also provided. ), The radial outer end is located radially outward of the smallest diameter portion of the eccentric portion (41) and radially inward of the largest diameter portion of the eccentric portion (41).
JP11718688U 1988-09-06 1988-09-06 Rotary compressor Expired - Lifetime JPH0723596Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11718688U JPH0723596Y2 (en) 1988-09-06 1988-09-06 Rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11718688U JPH0723596Y2 (en) 1988-09-06 1988-09-06 Rotary compressor

Publications (2)

Publication Number Publication Date
JPH0239590U JPH0239590U (en) 1990-03-16
JPH0723596Y2 true JPH0723596Y2 (en) 1995-05-31

Family

ID=31360411

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11718688U Expired - Lifetime JPH0723596Y2 (en) 1988-09-06 1988-09-06 Rotary compressor

Country Status (1)

Country Link
JP (1) JPH0723596Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3731068B2 (en) * 2002-06-05 2006-01-05 ダイキン工業株式会社 Rotary compressor

Also Published As

Publication number Publication date
JPH0239590U (en) 1990-03-16

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