JP2003206883A - Sealed compressor - Google Patents
Sealed compressorInfo
- Publication number
- JP2003206883A JP2003206883A JP2002009406A JP2002009406A JP2003206883A JP 2003206883 A JP2003206883 A JP 2003206883A JP 2002009406 A JP2002009406 A JP 2002009406A JP 2002009406 A JP2002009406 A JP 2002009406A JP 2003206883 A JP2003206883 A JP 2003206883A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- electric motor
- hermetic compressor
- discharge pipe
- pipe
- 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
Links
Landscapes
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気調和機等に使
用される密閉型圧縮機に係り、詳しくは摺動部を潤滑し
た後の排油を密閉容器外部に流出するのを防止すること
ができる排油口の配置及び構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor used in an air conditioner and the like, and more particularly, to preventing drained oil after lubricating a sliding part from flowing out of a hermetic container. The present invention relates to the arrangement and structure of an oil drain port that can
【０００２】[0002]
【従来の技術】従来の密閉型圧縮機は例えば図８に示す
ようなものがある。ここでは内部高圧型のスクロール型
圧縮機を例にとり説明する。図８において、密閉容器1'
内の上下に、冷媒を圧縮する圧縮部２と、同圧縮部２を
駆動する電動機３とを配設している。前記スクロール型
圧縮機は、鏡板4aの内面に渦捲き状のラップ4bを立設さ
せた固定スクロール４と、同固定スクロール４と鏡板6a
内面のラップ6bを互いに噛み合わせ複数の圧縮室５を形
成する旋回スクロール６と、同旋回スクロール６の背面
のボス部6cに形成された旋回軸受に、先端の旋回軸7aを
挿入し、前記電動機３の回転力を前記旋回スクロール６
に伝達するシャフト７と、同シャフト７の主軸7bを支承
し圧縮部２の一部を構成するメインフレーム８と、前記
圧縮部２の摺動部に前記シャフト７の下端から、潤滑油
送路7cを通して密閉容器1'底部の油溜め16の潤滑油を供
給するオイルポンプ19により構成されている。2. Description of the Related Art For example, a conventional hermetic compressor is shown in FIG. Here, an internal high pressure scroll type compressor will be described as an example. In FIG. 8, a closed container 1 '
A compression unit 2 that compresses the refrigerant and an electric motor 3 that drives the compression unit 2 are disposed above and below the inside. The scroll type compressor has a fixed scroll 4 in which a spiral wrap 4b is erected on an inner surface of an end plate 4a, the fixed scroll 4 and an end plate 6a.
The orbiting scroll 6 that forms a plurality of compression chambers 5 by meshing the inner wraps 6b with each other and the orbiting bearing formed on the boss portion 6c on the back surface of the orbiting scroll 6 are inserted with the orbiting shaft 7a at the tip, and the electric motor The rotational force of 3 is applied to the orbiting scroll 6
To the main shaft 8 which supports the main shaft 7b of the shaft 7 and constitutes a part of the compression part 2, and the sliding part of the compression part 2 from the lower end of the shaft 7 to the lubricating oil feed path. It is composed of an oil pump 19 which supplies the lubricating oil of the oil sump 16 at the bottom of the closed container 1'through 7c.
【０００３】前記圧縮部２の吸入室2aに冷媒を吸入する
吸入管９を接続するとともに、前記電動機３を収容する
電動機室3cの、同電動機３と前記圧縮部２との間に、前
記圧縮部２で圧縮した冷媒を前記密閉容器1'外部に吐出
する吐出管10を接続し、圧縮冷媒を吐出口11から吐出室
12に吐出して連通路13を経由して電動機室3cに流れ、密
閉型圧縮機を内部高圧型とし、前記吐出管10から外部に
冷媒を吐出する構成となっている。また、前記メインフ
レーム８に前記摺動部を潤滑した後の排油を、前記電動
機室3cに排出する排油通路20' が設けられている。A suction pipe 9 for sucking a refrigerant is connected to the suction chamber 2a of the compression unit 2 and the compression is performed between the electric motor 3 and the compression unit 2 in an electric motor chamber 3c for accommodating the electric motor 3. A discharge pipe 10 for discharging the refrigerant compressed in the section 2 to the outside of the closed container 1'is connected to discharge the compressed refrigerant from a discharge port 11 into a discharge chamber.
The refrigerant is discharged to 12 and flows into the electric motor chamber 3c via the communication path 13, the hermetic compressor is of an internal high pressure type, and the refrigerant is discharged from the discharge pipe 10 to the outside. Further, the main frame 8 is provided with an oil drain passage 20 'for discharging the oil drained after lubricating the sliding portion to the electric motor chamber 3c.
【０００４】上記構成において、油溜め16の潤滑油は図
８の実線矢印で示すように、オイルポンプ19により潤滑
油送路7cに吸入され、主軸7bの主軸受8aを潤滑すると同
時に、旋回軸7aの先端からボス部6cに形成された旋回軸
受（図示せず）を潤滑し、排油路20' を経由して電動機
室3cに排油される。そして、この排油は電動機３の微小
空間を通り油溜め16に戻される。一方、冷媒ガスは破線
矢印で示すように、前記吸入管９から吸入室2aに吸入し
て圧縮室５にて圧縮工程を行い、高温高圧に圧縮され吐
出口11から吐出室12に吐出され、連通路13を経由して前
記電動機室3cに流れ、そして、前記吐出管10から外部に
吐出される。In the above structure, the lubricating oil in the oil sump 16 is sucked into the lubricating oil feed passage 7c by the oil pump 19 as shown by the solid line arrow in FIG. A slewing bearing (not shown) formed on the boss portion 6c is lubricated from the tip of the 7a, and oil is discharged to the electric motor chamber 3c via the oil discharge passage 20 '. Then, this drained oil is returned to the oil sump 16 through the minute space of the electric motor 3. On the other hand, the refrigerant gas is sucked from the suction pipe 9 into the suction chamber 2a and compressed in the compression chamber 5 as shown by the broken line arrow, compressed to high temperature and high pressure, and discharged from the discharge port 11 to the discharge chamber 12. It flows into the electric motor chamber 3c via the communication passage 13 and is then discharged from the discharge pipe 10 to the outside.
【０００５】しかしながら、上記構成の場合、軸受け等
の摺動部を潤滑した後の排油は圧縮部２から電動機室3c
の上部空間に流れるため、吐出ガスの流れにのって一部
が密閉容器1'外部に吐出させて吐油量を増加させる。吐
油量が多いと、熱交換器の性能低下や、圧縮機内の油が
枯渇して摺動部の焼き付きの危険性がある。However, in the case of the above structure, the oil discharged after lubricating the sliding parts such as the bearings is discharged from the compression part 2 to the electric motor chamber 3c.
Since it flows into the upper space of the above, a part of the gas is discharged to the outside of the closed container 1'according to the flow of the discharge gas to increase the oil discharge amount. If the amount of oil discharged is large, there is a risk that the performance of the heat exchanger will deteriorate and that the oil in the compressor will be depleted and seizure of the sliding parts will occur.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、摺動部を潤滑した後の排油を排出
する排油口を、吐出管の入口の位置から回転子の回転方
向に９０°から１８０°の範囲内に設けて、吐出管から
外部に吐出される吐油量を低減し、信頼性の向上を図る
ことができる密閉型圧縮機を提供することを目的として
いる。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an oil drainage port for discharging drainage oil after lubricating a sliding portion is provided in the rotor from the position of the inlet of the discharge pipe. With the object of providing a hermetic compressor that is provided within the range of 90 ° to 180 ° in the rotation direction, can reduce the amount of oil discharged from the discharge pipe to the outside, and can improve reliability. There is.
【０００７】[0007]
【課題を解決するための手段】本発明は上記の課題を解
決するためなされたもので、底部に油溜めを有する密閉
容器内の上下に配置された冷媒を圧縮する圧縮部と、同
圧縮部を駆動する固定子と回転子からなる電動機と、こ
の電動機の回転力を前記圧縮部に伝達すると共に、中心
部を貫通する潤滑油送路が穿設されたシャフトと、前記
圧縮部の摺動部に前記シャフトの一端から、前記潤滑油
送路を通して潤滑油を供給するオイルポンプとから構成
され、前記圧縮部に前記摺動部を潤滑した後の排油を、
前記電動機を収納する電動機室に排出する排油通路を設
け、前記圧縮部に、同圧縮部で圧縮した冷媒を吐出する
吐出室と前記電動機室とを連通する連通路を設けると共
に、前記圧縮部と前記電動機との間に、前記圧縮冷媒を
前記密閉容器外部に吐出する吐出管を接続してなる密閉
型圧縮機において、前記密閉容器の内壁と前記固定子の
外周壁間に、前記電動機室の前記圧縮部側空間と反圧縮
部側空間とを軸方向に連通する連通孔を設けると共に、
前記排油通路の排油口を、前記吐出管の入口の位置から
前記回転子の回転方向に９０°から１８０°の範囲内に
設けた構成となっている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is a compression section for compressing refrigerants arranged above and below in a closed container having an oil sump at the bottom, and the compression section. An electric motor composed of a stator and a rotor for driving the motor, a shaft for transmitting a rotational force of the electric motor to the compression portion, and a lubricating oil feed passage penetrating the central portion, and sliding of the compression portion. An oil pump for supplying lubricating oil from one end of the shaft to the lubricating oil passage through the lubricating oil passage, and discharging oil after lubricating the sliding portion to the compression portion,
An oil discharge passage for discharging the electric motor to the electric motor chamber is provided, and the compression unit is provided with a communication passage for communicating the discharge chamber for discharging the refrigerant compressed by the compression unit and the electric motor chamber, and the compression unit. A discharge pipe for discharging the compressed refrigerant to the outside of the hermetic container, the electric motor chamber is provided between the inner wall of the hermetic container and the outer peripheral wall of the stator. While providing a communication hole that axially communicates the compression part side space and the anti-compression part side space of
The oil discharge port of the oil discharge passage is provided within a range of 90 ° to 180 ° in the rotation direction of the rotor from the position of the inlet of the discharge pipe.
【０００８】また、前記連通路の前記電動機室側出口
を、前記排油口の位置から前記回転子の回転方向に９０
°、反回転方向に４５°の範囲外に設けた構成とする。Further, the outlet of the communication passage on the side of the electric motor chamber is located 90 degrees from the position of the oil drain port in the rotation direction of the rotor.
The structure is provided outside the range of 45 ° in the opposite rotation direction.
【０００９】また、前記排油口に垂下する略直線状の排
油管を接続してなる構成となっている。Further, it is constructed such that a substantially linear oil drain pipe that hangs down is connected to the oil drain port.
【００１０】また、前記排油口および前記排油管を、前
記電動機の巻線より外側に設けた構成となっている。Further, the oil discharge port and the oil discharge pipe are provided outside the winding of the electric motor.
【００１１】また、前記排油口および前記排油管と、前
記連通孔とが同一軸線上にある構成となっている。Further, the oil discharge port and the oil discharge pipe and the communication hole are arranged on the same axis.
【００１２】また、前記排油管の出口を、前記電動機の
巻線立上げ部まで延伸してなる構成となっている。The outlet of the oil drain pipe extends to the winding rising portion of the electric motor.
【００１３】また、前記排油管の出口を、前記連通孔に
挿入するようにした構成となっている。The outlet of the oil drain pipe is inserted into the communication hole.
【００１４】また、前記排油管の出口を、前記密閉容器
の内壁に臨ませてた構成となっている。The outlet of the oil drain pipe is made to face the inner wall of the closed container.
【００１５】また、前記排油口を前記吐出管の入口の位
置から前記回転子の回転方向に９０°から１８０°の範
囲内に設けられない場合、前記排油口にクランク状の排
油管を接続し、同排油管の出口を前記吐出管の入口の位
置から前記回転子の回転方向に９０°から１８０°の範
囲内に設けた構成となっている。If the oil discharge port is not provided within the range of 90 ° to 180 ° in the rotation direction of the rotor from the position of the inlet of the discharge pipe, a crank-shaped oil discharge pipe is provided at the oil discharge port. The outlet of the oil discharge pipe is provided within the range of 90 ° to 180 ° in the rotation direction of the rotor from the position of the inlet of the discharge pipe.
【００１６】また、前記排油管に熱収縮性の絶縁チュー
ブを被着した構成となっている。The oil drain pipe is covered with a heat-shrinkable insulating tube.
【００１７】また、前記排油管に樹脂材を用いた構成と
なっている。The oil drain pipe is made of a resin material.
【００１８】また、前記排油管を断面扁平形状にした構
成となっている。Further, the oil discharge pipe has a flat cross section.
【００１９】また、前記電動機の巻線の前記排油管に相
対向する部分を凹ませて、前記巻線と前記排油管の絶縁
距離を広げた構成となっている。Further, a portion of the winding of the electric motor facing the drain pipe is recessed to widen an insulation distance between the winding and the drain pipe.
【００２０】また、前記電動機の巻線の前記排油管に相
対向する部分に分け目を設け、前記巻線と前記排油管の
絶縁距離を広げた構成となっている。Further, a division is provided in a portion of the winding of the electric motor which faces the oil drain pipe, and an insulation distance between the winding and the oil drain pipe is widened.
【００２１】[0021]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいた実施例として詳細に説明する。図１は本発明
における密閉型圧縮機の縦断面図、図２（Ａ）は電動機
側から圧縮部を見た要部拡大図である。ここでは内部高
圧型のスクロール型圧縮機を例にとり説明する。図１に
おいて、密閉容器１内の上下に、冷媒を圧縮する圧縮部
２と、前記密閉容器１の内壁に固定された固定子3bと、
同固定子3bにより駆動され回転する回転子3aとを有し、
前記圧縮部２を駆動する電動機３とを配設している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail as examples based on the drawings. FIG. 1 is a vertical cross-sectional view of a hermetic compressor according to the present invention, and FIG. 2A is an enlarged view of a main part of the compression section as seen from the electric motor side. Here, an internal high pressure scroll type compressor will be described as an example. In FIG. 1, a compression part 2 for compressing a refrigerant, and a stator 3b fixed to the inner wall of the closed container 1, above and below in the closed container 1.
It has a rotor 3a which is driven and rotated by the stator 3b,
An electric motor 3 that drives the compression unit 2 is provided.
【００２２】前記スクロール型圧縮機は、鏡板4aの内面
に渦捲き状のラップ4bを立設させた固定スクロール４
と、同固定スクロール４と鏡板6a内面のラップ6bを互い
に噛み合わせ複数の圧縮室５を形成する旋回スクロール
６と、同旋回スクロール６の背面のボス部6cに形成され
た旋回軸受に、先端の旋回軸7aを挿入し、前記電動機３
の回転力を前記旋回スクロール６に伝達するシャフト７
と、同シャフト７の主軸7bを支承し圧縮部２の一部を構
成するメインフレーム８と、前記シャフト７の下端を支
承するサブフレーム18と、前記圧縮部２の摺動部に前記
シャフト７の下端から、潤滑油送路7cを通して密閉容器
１底部の油溜め16の潤滑油を供給するオイルポンプ19に
より構成されている。The scroll type compressor has a fixed scroll 4 in which a spiral wrap 4b is erected on the inner surface of an end plate 4a.
The fixed scroll 4 and the wrap 6b on the inner surface of the end plate 6a mesh with each other to form a plurality of compression chambers 5, and the orbiting bearing formed on the boss portion 6c on the back of the orbiting scroll 6 The rotary shaft 7a is inserted, and the electric motor 3 is inserted.
7 for transmitting the rotational force of the orbit to the orbiting scroll 6
A main frame 8 which supports the main shaft 7b of the shaft 7 and constitutes a part of the compression section 2, a sub-frame 18 which supports the lower end of the shaft 7, and a sliding section of the compression section 2 in which the shaft 7 is attached. It is composed of an oil pump 19 for supplying the lubricating oil of the oil sump 16 at the bottom of the closed container 1 from the lower end of the oil through the lubricating oil feed path 7c.
【００２３】前記圧縮部２の吸入室2aに冷媒を吸入する
吸入管９を接続するとともに、前記電動機３を収容する
電動機室3cの、同電動機３と前記圧縮部２との間に、前
記圧縮部２で圧縮した冷媒を前記密閉容器１外部に吐出
する吐出管10を接続し、圧縮冷媒を吐出口11から吐出室
12に吐出して連通路13を経由して電動機室3cに流れ、密
閉型圧縮機を内部高圧型とし、前記吐出管10から外部に
冷媒を吐出する構成となっている。A suction pipe 9 for sucking a refrigerant is connected to the suction chamber 2a of the compression unit 2, and the compression chamber 2c for accommodating the electric motor 3 is provided between the electric motor 3 and the compression unit 2. A discharge pipe 10 for discharging the refrigerant compressed in the section 2 to the outside of the closed container 1 is connected, and the compressed refrigerant is discharged from a discharge port 11 into a discharge chamber.
The refrigerant is discharged to 12 and flows into the electric motor chamber 3c via the communication path 13, the hermetic compressor is of an internal high pressure type, and the refrigerant is discharged from the discharge pipe 10 to the outside.
【００２４】前記メインフレーム８に前記摺動部を潤滑
した後の排油を、前記電動機室3cに排出する排油通路20
を設けると共に、前記密閉容器１の内壁と前記固定子3b
の外周壁間に、前記電動機室3cの圧縮部側空間3c1 と反
圧縮部側空間3c2 とを軸方向に連通する連通孔14を設
け、同連通孔14を経由して前記排油を前記油溜め16に戻
すようになされている。An oil discharge passage 20 for discharging the oil discharged from the main frame 8 after lubricating the sliding portion to the electric motor chamber 3c.
And the inner wall of the closed container 1 and the stator 3b.
A communication hole 14 is provided between the outer peripheral walls of the electric motor chamber 3c for axially connecting the compression section side space 3c1 and the anti-compression section side space 3c2, and the exhaust oil is discharged through the communication hole 14 through the oil passage. It is designed to return to reservoir 16.
【００２５】また、前記排油通路20の前記電動機室3c側
の排油口21を、前記吐出管10の入口の位置から前記回転
子3aの回転方向に90°から180 °の範囲Ａ内に設けた構
成となっている。また、前記連通路13の電動機室3c側出
口を、前記排油口21の位置から前記回転子3aの回転方向
に０°から90°の範囲Ｂ内には設けない構成となってい
る。また、前記排油口21を前記電動機３の巻線3dより外
側に設けると共に、前記排油口21と前記連通孔14とが同
一軸線上にある構成となっている。Further, the oil discharge port 21 of the oil discharge passage 20 on the side of the electric motor chamber 3c is within the range A of 90 ° to 180 ° in the rotation direction of the rotor 3a from the position of the inlet of the discharge pipe 10. It has been provided. The outlet of the communication passage 13 on the side of the electric motor chamber 3c is not provided within a range B of 0 ° to 90 ° in the rotation direction of the rotor 3a from the position of the oil discharge port 21. The oil drain port 21 is provided outside the winding 3d of the electric motor 3, and the oil drain port 21 and the communication hole 14 are on the same axis.
【００２６】上記構成において、油溜め16の潤滑油は図
１の実線矢印で示すように、オイルポンプ19により潤滑
油送路7cに吸入され、主軸7bの主軸受8aを潤滑すると同
時に、旋回軸7aの先端からボス部6cに形成された旋回軸
受（図示せず）を潤滑し、排油路20を経由して電動機室
3cの圧縮部側空間3c1 に排油される。そして、この排油
は連通孔14を通り油溜め16に戻される。一方、冷媒ガス
は破線矢印で示すように、前記吸入管９から吸入室2aに
吸入して圧縮室５にて圧縮工程を行い、高温高圧に圧縮
され吐出口11から吐出室12に吐出され、連通路13を経由
して前記電動機室3cに流れ、前記電動機３の上部を冷却
し、前記吐出管10から外部に吐出される。In the above structure, the lubricating oil in the oil sump 16 is sucked into the lubricating oil passage 7c by the oil pump 19 as shown by the solid line arrow in FIG. Lubricate the slewing bearing (not shown) formed on the boss portion 6c from the tip of the 7a, and through the oil drain passage 20 the motor room
Oil is drained to the space 3c1 on the compression part side of 3c. Then, this drained oil is returned to the oil sump 16 through the communication hole 14. On the other hand, the refrigerant gas is sucked from the suction pipe 9 into the suction chamber 2a and compressed in the compression chamber 5 as shown by the broken line arrow, compressed to high temperature and high pressure, and discharged from the discharge port 11 to the discharge chamber 12. It flows into the electric motor chamber 3c through the communication passage 13, cools the upper part of the electric motor 3, and is discharged from the discharge pipe 10 to the outside.
【００２７】前記電動機室3cの冷媒ガスの流れは、図２
に示すように、回転子3aの回転によって回転子3aと同方
向に流れるため、前記吐出管10の位置を境に右半分が上
流側、左半分が下流側となる。排油口21を、前記吐出管
10の入口の位置から前記回転子3aの回転方向に90°から
180 °の範囲Ａ内に設けたことにより、排油口21から出
た潤滑油は、吐出管10に達する前に電動機室3cに落下
し、圧縮機外部に吐出されるのを防止でき、吐油量を低
減することができる。The flow of the refrigerant gas in the electric motor room 3c is shown in FIG.
As shown in FIG. 6, the rotation of the rotor 3a causes the flow in the same direction as the rotor 3a, so that the right half is upstream and the left half is downstream with the position of the discharge pipe 10 as a boundary. Replace the oil drain port 21 with the discharge pipe.
From the inlet position of 10 to 90 ° in the rotation direction of the rotor 3a
Since it is provided within the range A of 180 °, it is possible to prevent the lubricating oil from the oil discharge port 21 from dropping into the electric motor chamber 3c before reaching the discharge pipe 10 and being discharged to the outside of the compressor. The amount of oil can be reduced.
【００２８】また、前記連通路13の電動機室3c側出口
を、前記排油口21の位置から前記回転子3aの回転方向に
９０°、反回転方向に４５°の範囲Ｂ外に設けることに
より、前記吐出室12から電動機室3cに入ってくる吐出ガ
スによって、排油口21から出てきた潤滑油が飛散される
のを防止することができる。By providing the outlet of the communication passage 13 on the side of the electric motor chamber 3c outside the range B of 90 ° in the rotation direction of the rotor 3a and 45 ° in the counter rotation direction from the position of the oil drain port 21. It is possible to prevent the lubricating oil that has come out of the oil discharge port 21 from being scattered by the discharge gas that enters the electric motor chamber 3c from the discharge chamber 12.
【００２９】図３は本発明による第二の実施例で、前記
排油口21に垂下する略直線状の排油管22を接続し、同排
油管22を前記電動機３の巻線3dより外側に設けると共
に、前記排油管22と前記連通孔14とが同一軸線上にある
構成とすることにより、潤滑油が回転子3aのコア上部に
溜まるのを防ぎ、落下した潤滑油をできるだけ早く油溜
め16に戻すことができる。更に、前記排油管22の出口22
a を、前記巻線3dの立上げ部3d1 まで延伸することによ
って、ガスにより潤滑油が飛散されるのを防止すること
ができる。FIG. 3 is a second embodiment according to the present invention, in which a substantially linear drain pipe 22 is connected to the drain port 21, and the drain pipe 22 is located outside the winding 3d of the electric motor 3. By providing the oil drain pipe 22 and the communication hole 14 on the same axis, the lubricating oil is prevented from collecting on the upper portion of the core of the rotor 3a, and the dropped lubricating oil is stored in the oil storage 16 as soon as possible. Can be returned to. Further, the outlet 22 of the oil drain pipe 22
By extending a to the rising portion 3d1 of the winding 3d, it is possible to prevent the lubricating oil from being scattered by the gas.
【００３０】図４（Ａ）は本発明による第三の実施例
で、前記排油管22の出口部分22b を、前記連通孔14の入
口に挿入するようにしたもので、潤滑油は排油管22から
連通孔14を通り、直接油溜め16に戻されるため、吐出ガ
ス流に流されにくく、吐油量を低減することができる。
また、図４（Ｂ）は本発明による第四の実施例で、前記
排油管22の出口22c を、前記密閉容器１の内壁に臨ませ
てたもので、排油管22からの潤滑油は密閉容器１の壁面
を伝わって油溜め16に戻されるため、潤滑油が飛散され
るのを防止することができる。FIG. 4A shows a third embodiment according to the present invention, in which the outlet portion 22b of the oil drain pipe 22 is inserted into the inlet of the communication hole 14, and the lubricating oil is the oil drain pipe 22. Since it is directly returned to the oil sump 16 through the communication hole 14 from, it is difficult for the gas to flow into the discharge gas flow, and the amount of oil discharged can be reduced.
Further, FIG. 4B shows a fourth embodiment according to the present invention in which the outlet 22c of the oil drain pipe 22 is made to face the inner wall of the closed container 1, and the lubricating oil from the oil drain pipe 22 is sealed. Since it is returned to the oil sump 16 along the wall surface of the container 1, it is possible to prevent the lubricating oil from being scattered.
【００３１】図５は本発明による第五の実施例で、前記
排油口21を前記吐出管10の入口の位置から前記回転子3a
の回転方向に９０°から１８０°の範囲内に設けられな
い場合、前記排油口21にクランク状の排油管23を接続
し、同排油管23の出口23a を前記吐出管10の入口の位置
から前記回転子3aの回転方向に９０°から１８０°の範
囲内に設けた構成とすることにより、上記と同様に潤滑
油が圧縮機外部に吐出されるのを防止でき、吐油量を低
減することができる。FIG. 5 shows a fifth embodiment of the present invention, in which the oil drain port 21 is moved from the position of the inlet of the discharge pipe 10 to the rotor 3a.
When it is not provided within the range of 90 ° to 180 ° in the rotation direction of No. 1, a crank-shaped oil drain pipe 23 is connected to the oil drain port 21, and the outlet 23a of the oil drain pipe 23 is positioned at the inlet of the discharge pipe 10. Therefore, the lubricating oil can be prevented from being discharged to the outside of the compressor and the amount of oil discharged can be reduced in the same manner as described above by adopting the configuration provided within the range of 90 ° to 180 ° in the rotation direction of the rotor 3a. can do.
【００３２】また、前記排油管22と巻線3dとの間で絶縁
を確保する必要があるが、もし絶縁距離を確保できない
場合は、前記排油管22に熱収縮性の絶縁チューブ（図示
せず）を被着するか、または樹脂材を用い、排油管22と
巻線3dの絶縁を確保するようになされている。また、図
６（Ａ）は本発明による第六の実施例で、前記排油管22
を断面扁平形状とし、排油管22と前記固定子3bの巻線
（図示せず）との絶縁距離を確保するようにしたもので
ある。また、図６（Ｂ）は本発明による第七の実施例
で、巻線3dの前記排油管22に相対向する部分3d2 を凹ま
せて、上記と同様に排油管22と巻線3dとの絶縁距離を確
保するようにしたものである。Further, it is necessary to secure insulation between the oil drain pipe 22 and the winding 3d, but if the insulation distance cannot be secured, a heat shrinkable insulating tube (not shown) is attached to the oil drain pipe 22. ) Or a resin material is used to ensure insulation between the oil drain pipe 22 and the winding 3d. 6A shows a sixth embodiment according to the present invention, in which the oil drain pipe 22
Has a flat cross section to ensure an insulation distance between the oil drain pipe 22 and the winding wire (not shown) of the stator 3b. Further, FIG. 6B shows a seventh embodiment according to the present invention, in which a portion 3d2 of the winding 3d facing the drain pipe 22 is recessed, and the drain pipe 22 and the winding 3d are connected in the same manner as above. This is to ensure the insulation distance.
【００３３】また、図７は本発明による第八の実施例
で、（Ａ）は巻線3dを電動機３の上から見た上面図、
（Ｂ）はその側面図である。図において、巻線3dの前記
排油管22に相対向する部分に分け目3d3 を設け、巻線3d
と排油管22の絶縁間隔ｄを確保するようにしたものであ
る。FIG. 7 shows an eighth embodiment of the present invention, (A) is a top view of the winding 3d as seen from above the electric motor 3,
(B) is a side view thereof. In the figure, a division 3d3 is provided in a portion of the winding 3d that faces the oil drain pipe 22, and the winding 3d
And the insulation distance d between the oil drain pipe 22 is secured.
【００３４】以上に説明したように、摺動部を潤滑した
後の排油を排出する排油口22を、吐出管10の入口の位置
から回転子3aの回転方向に９０°から１８０°の範囲内
に設けることにより、吐出管10から外部に吐出される潤
滑油の吐油量を低減し、熱交換器の性能低下や、圧縮機
内の油が枯渇して摺動部の焼き付きを防止すると共に、
信頼性の向上を図ることができる密閉型圧縮機となる。As described above, the oil drain port 22 for discharging the drain oil after lubricating the sliding portion is located 90 ° to 180 ° in the rotation direction of the rotor 3a from the position of the inlet of the discharge pipe 10. By providing within the range, the amount of lubricating oil discharged from the discharge pipe 10 is reduced, the performance of the heat exchanger is reduced, and oil in the compressor is exhausted to prevent seizure of sliding parts. With
The hermetic compressor can improve reliability.
【００３５】[0035]
【発明の効果】以上のように本発明においては、摺動部
を潤滑した後の排油を排出する排油口を、吐出管の入口
の位置から回転子の回転方向に９０°から１８０°の範
囲内に設けることにより、吐出管から外部に吐出される
潤滑油の吐油量を低減し、熱交換器の性能低下や、圧縮
機内の油が枯渇して摺動部の焼き付きを防止すると共
に、信頼性の向上を図ることができる密閉型圧縮機とな
る。As described above, according to the present invention, the drain port for draining the drain oil after lubricating the sliding portion is 90 ° to 180 ° in the rotational direction of the rotor from the position of the inlet of the discharge pipe. By setting it within the range, the amount of lubricating oil discharged from the discharge pipe to the outside is reduced, the performance of the heat exchanger is reduced, and the oil in the compressor is exhausted and seizure of the sliding part is prevented. Together with this, the hermetic compressor can improve reliability.
【図１】本発明の実施例を示す密閉型圧縮機の縦断面図
である。FIG. 1 is a vertical cross-sectional view of a hermetic compressor showing an embodiment of the present invention.
【図２】本発明における第一の実施例を示す電動機側か
ら圧縮部を見た要部拡大図である。FIG. 2 is an enlarged view of a main part of the compression unit as seen from the electric motor side according to the first embodiment of the present invention.
【図３】本発明における第二の実施例を示す要部拡大断
面図である。FIG. 3 is an enlarged cross-sectional view of an essential part showing a second embodiment of the present invention.
【図４】本発明における要部拡大断面図で、（Ａ）は第
三の実施例、（Ｂ）は第四の実施例である。FIG. 4 is an enlarged cross-sectional view of a main part of the present invention, in which (A) is a third embodiment and (B) is a fourth embodiment.
【図５】本発明における第五の実施例を示す要部拡大斜
視図である。FIG. 5 is an enlarged perspective view of an essential part showing a fifth embodiment of the present invention.
【図６】本発明における巻線と排油管の絶縁関係を示す
要部拡大断面図で、（Ａ）は第六の実施例、（Ｂ）は第
七の実施例である。FIG. 6 is an enlarged cross-sectional view of a main part showing an insulation relationship between a winding wire and an oil drain pipe in the present invention, (A) showing a sixth embodiment and (B) showing a seventh embodiment.
【図７】本発明における第八の実施例を示す図で、
（Ａ）は巻線を電動機の上から見た上面図、（Ｂ）はそ
の側面図である。FIG. 7 is a diagram showing an eighth embodiment of the present invention,
(A) is a top view of the winding seen from above the electric motor, and (B) is a side view thereof.
【図８】従来例を示す密閉型圧縮機の縦断面図である。FIG. 8 is a vertical cross-sectional view of a conventional hermetic compressor.
１ 密閉容器 ２ 圧縮部 ３ 電動機 3a 回転子 3b 固定子 3c 電動機室 3d 巻線 ４ 固定スクロール ５ 圧縮室 ６ 旋回スクロール 6c ボス部 ７ シャフト 7a 旋回軸 7b 主軸 7c 潤滑油送路 ８ メインフレーム ９ 吸入管 10 吐出管 11 吐出口 12 吐出室 13 連通路 14 連通孔 16 油溜め 18 サブフレーム 19 オイルポンプ 20 排油通路 21 排油口 22,23 排油管 1 closed container 2 Compressor 3 electric motor 3a rotor 3b stator 3c electric motor room 3d winding 4 fixed scroll 5 compression chamber 6 orbiting scroll 6c Boss 7 shaft 7a swivel axis 7b spindle 7c Lubricating oil passage 8 main frames 9 Inhalation tube 10 Discharge pipe 11 Discharge port 12 Discharge chamber 13 passages 14 Communication hole 16 oil sump 18 subframe 19 oil pump 20 Oil drain passage 21 Oil drain port 22,23 drain pipe
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０４Ｃ 29/00 Ｆ０４Ｃ 29/00 Ｔ Ｕ Ｈ０２Ｋ 5/167 Ｈ０２Ｋ 5/167 Ａ 7/14 7/14 Ｂ Ｆターム(参考） 3H003 AA05 AB03 AC03 AD03 BD12 BH06 CD05 CF06 3H029 AA02 AA14 AB03 BB03 BB05 BB41 CC07 CC22 CC23 CC25 CC27 CC38 CC39 CC42 5H605 BB07 BB17 CC01 CC10 EB06 EB10 EB12 EB21 5H607 AA12 BB01 BB14 BB25 CC01 CC05 DD02 DD08 DD14 DD15 FF06 FF07 GG01 GG08 GG09 GG25 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F04C 29/00 F04C 29/00 TU H02K 5/167 H02K 5/167 A 7/14 7/14 BF Term (Reference) 3H003 AA05 AB03 AC03 AD03 BD12 BH06 CD05 CF06 3H029 AA02 AA14 AB03 BB03 BB05 BB41 CC07 CC22 CC23 CC25 CC27 CC38 CC39 CC42 5H605 BB07 BB17 CC01 CC10 EB06 DD15FF08 CC08 DD14FF25 CC08 DD08FF14BB140514BB140514 GG01 GG08 GG09 GG25
Claims (14)
に配置された冷媒を圧縮する圧縮部と、同圧縮部を駆動
する固定子と回転子からなる電動機と、この電動機の回
転力を前記圧縮部に伝達すると共に、中心部を貫通する
潤滑油送路が穿設されたシャフトと、前記圧縮部の摺動
部に前記シャフトの一端から、前記潤滑油送路を通して
潤滑油を供給するオイルポンプとから構成され、前記圧
縮部に前記摺動部を潤滑した後の排油を、前記電動機を
収納する電動機室に排出する排油通路を設け、前記圧縮
部に、同圧縮部で圧縮した冷媒を吐出する吐出室と前記
電動機室とを連通する連通路を設けると共に、前記圧縮
部と前記電動機との間に、前記圧縮冷媒を前記密閉容器
外部に吐出する吐出管を接続してなる密閉型圧縮機にお
いて、 前記密閉容器の内壁と前記固定子の外周壁間に、前記電
動機室の前記圧縮部側空間と反圧縮部側空間とを軸方向
に連通する連通孔を設けると共に、前記排油通路の排油
口を、前記吐出管の入口の位置から前記回転子の回転方
向に９０°から１８０°の範囲内に設けてなることを特
徴とする密閉型圧縮機。1. A compression unit for compressing a refrigerant arranged above and below in a closed container having an oil sump at the bottom, an electric motor composed of a stator and a rotor for driving the compression unit, and a rotational force of the electric motor. A shaft is provided with a lubricating oil feed passage that is transmitted to the compression portion and penetrates through the center portion, and lubricating oil is supplied to the sliding portion of the compression portion from one end of the shaft through the lubricating oil feed passage. An oil pump is provided, and an oil discharge passage for discharging the oil discharged from the compression section after lubricating the sliding section to an electric motor chamber accommodating the electric motor is provided, and the compression section compresses the oil in the compression section. A discharge passage that discharges the refrigerant and the electric motor chamber are provided, and a discharge pipe that discharges the compressed refrigerant to the outside of the closed container is connected between the compression unit and the electric motor. In a hermetic compressor, the hermetically sealed volume Between the inner wall of and the outer peripheral wall of the stator, a communication hole that axially communicates the compression part side space and the anti-compression part side space of the electric motor chamber is provided, and the oil discharge port of the oil discharge passage is A hermetic compressor, wherein the hermetic compressor is provided within a range of 90 ° to 180 ° in a rotation direction of the rotor from a position of an inlet of the discharge pipe.
記排油口の位置から前記回転子の回転方向に９０°、反
回転方向に４５°の範囲外に設けてなることを特徴とす
る請求項１記載の密閉型圧縮機。2. The electric motor chamber side outlet of the communication passage is provided outside the range of 90 ° in the rotation direction of the rotor and 45 ° in the counter rotation direction from the position of the oil discharge port. The hermetic compressor according to claim 1.
を接続してなることを特徴とする請求項１記載の密閉型
圧縮機。3. The hermetic compressor according to claim 1, wherein a substantially linear oil drain pipe that hangs down is connected to the oil drain port.
動機の巻線より外側に設けてなることを特徴とする請求
項１または３記載の密閉型圧縮機。4. The hermetic compressor according to claim 1, wherein the oil discharge port and the oil discharge pipe are provided outside a winding of the electric motor.
通孔とが同一軸線上にあることを特徴とする請求項１ま
たは３記載の密閉型圧縮機。5. The hermetic compressor according to claim 1, wherein the oil discharge port and the oil discharge pipe and the communication hole are on the same axis.
立上げ部まで延伸してなることを特徴とする請求項１ま
たは３記載の密閉型圧縮機。6. The hermetic compressor according to claim 1, wherein the outlet of the oil drain pipe is extended to a winding rising portion of the electric motor.
するようにしてなることを特徴とする請求項１または３
記載の密閉型圧縮機。7. The outlet of the oil drain pipe is inserted into the communication hole.
The hermetic compressor described.
壁に臨ませてなることを特徴とする請求項１または３記
載の密閉型圧縮機。8. The hermetic compressor according to claim 1, wherein the outlet of the oil drain pipe is made to face the inner wall of the hermetic container.
ら前記回転子の回転方向に９０°から１８０°の範囲内
に設けられない場合、前記排油口にクランク状の排油管
を接続し、同排油管の出口を前記吐出管の入口の位置か
ら前記回転子の回転方向に９０°から１８０°の範囲内
に設けてなることを特徴とする請求項１記載の密閉型圧
縮機。9. A crank-shaped drain pipe is provided in the drain port when the drain port is not provided within a range of 90 ° to 180 ° in a rotation direction of the rotor from a position of an inlet of the discharge pipe. 2. The hermetic compressor according to claim 1, wherein the oil discharge pipe is connected and the outlet of the oil discharge pipe is provided within a range of 90 ° to 180 ° in the rotation direction of the rotor from the position of the inlet of the discharge pipe. .
を被着してなることを特徴とする請求項３または９記載
の密閉型圧縮機。10. The hermetic compressor according to claim 3, wherein the oil discharge pipe is covered with a heat-shrinkable insulating tube.
を特徴とする請求項３または９記載の密閉型圧縮機。11. The hermetic compressor according to claim 3, wherein a resin material is used for the oil discharge pipe.
ことを特徴とする請求項３または９記載の密閉型圧縮
機。12. The hermetic compressor according to claim 3, wherein the oil discharge pipe has a flat cross section.
向する部分を凹ませて、前記巻線と前記排油管の絶縁距
離を広げてなることを特徴とする請求項１、３または９
記載の密閉型圧縮機。13. The winding of the electric motor is formed by denting a portion of the winding facing the drainage pipe to widen an insulation distance between the winding and the drainage pipe.
The hermetic compressor described.
向する部分に分け目を設け、前記巻線と前記排油管の絶
縁距離を広げてなることを特徴とする請求項１、３また
は９記載の密閉型圧縮機。14. The winding of the electric motor is provided with a division at a portion facing the oil drain pipe, and an insulation distance between the winding and the oil drain pipe is widened. The hermetic compressor described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002009406A JP2003206883A (en) | 2002-01-18 | 2002-01-18 | Sealed compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002009406A JP2003206883A (en) | 2002-01-18 | 2002-01-18 | Sealed compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003206883A true JP2003206883A (en) | 2003-07-25 |
Family
ID=27647417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002009406A Pending JP2003206883A (en) | 2002-01-18 | 2002-01-18 | Sealed compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003206883A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005233096A (en) * | 2004-02-20 | 2005-09-02 | Hitachi Ltd | Scroll fluid machine |
| JP2009097486A (en) * | 2007-10-19 | 2009-05-07 | Mitsubishi Heavy Ind Ltd | Compressor |
| JP2013024153A (en) * | 2011-07-22 | 2013-02-04 | Mitsubishi Heavy Ind Ltd | Hermetic type compressor |
| EP2960513A1 (en) * | 2011-07-22 | 2015-12-30 | Mitsubishi Heavy Industries, Ltd. | Hermetic compressor |
-
2002
- 2002-01-18 JP JP2002009406A patent/JP2003206883A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005233096A (en) * | 2004-02-20 | 2005-09-02 | Hitachi Ltd | Scroll fluid machine |
| JP2009097486A (en) * | 2007-10-19 | 2009-05-07 | Mitsubishi Heavy Ind Ltd | Compressor |
| JP2013024153A (en) * | 2011-07-22 | 2013-02-04 | Mitsubishi Heavy Ind Ltd | Hermetic type compressor |
| EP2960513A1 (en) * | 2011-07-22 | 2015-12-30 | Mitsubishi Heavy Industries, Ltd. | Hermetic compressor |
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