JP2008031880A - Hermetic compressor - Google Patents

Hermetic compressor Download PDF

Info

Publication number
JP2008031880A
JP2008031880A JP2006204366A JP2006204366A JP2008031880A JP 2008031880 A JP2008031880 A JP 2008031880A JP 2006204366 A JP2006204366 A JP 2006204366A JP 2006204366 A JP2006204366 A JP 2006204366A JP 2008031880 A JP2008031880 A JP 2008031880A
Authority
JP
Japan
Prior art keywords
oil
compression mechanism
stator
gas
mesh
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.)
Withdrawn
Application number
JP2006204366A
Other languages
Japanese (ja)
Inventor
Kenji Shimada
賢志 嶋田
Yasushi Aeba
靖 饗場
Hidenobu Shintaku
秀信 新宅
Manabu Sakai
学 阪井
Akinori Fukuda
昭徳 福田
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2006204366A priority Critical patent/JP2008031880A/en
Publication of JP2008031880A publication Critical patent/JP2008031880A/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To handle refrigerant 27 and oil 6 by substantially restraining them so as to discharge gas, which has been sufficiently separated into gas and liquid, from an external discharge pipe 39. <P>SOLUTION: The refrigerant gas 27 containing oil 6 is discharged from a discharge port 18. The refrigerant gas passes through a stator passage 37 after passing a rotor passage 36, and flows out to a stator upper chamber 38 of an outer circumference of a communication passage 34. By providing mesh 100 to a lower part of a stator 3b of a sealed vessel 1, the refrigerant gas 27 containing oil 6 is collided with the mesh 100, and the oil 6 is adhered to the mesh 100. Therefore, only the refrigerant gas 27 passes through the stator passage 37 and flows out to the stator upper chamber 38 of the outer circumference of the communication passage 34, and gas-liquid separation of the refrigerant is efficiently performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、業務用または家庭用、あるいは乗り物用の冷凍空調給湯、あるいは冷蔵庫などに用いられる密閉型圧縮機に関するものである。   The present invention relates to a hermetic compressor used for refrigeration air conditioning hot water supply for business use, home use, or vehicle use, or a refrigerator.

従来、この種の密閉型圧縮機は、図2に示すように、密閉容器1内に圧縮機構2、この圧縮機構2の下方に設けた圧縮機構2を駆動するための電動機3と、この電動機3の回転力を圧縮機構2に伝達するためのクランク軸4とを備え、密閉容器1内の下部に設けたオイル溜め20のオイル6をクランク軸4を通じてクランク軸4の軸受部66や圧縮機構2の摺動部に供給する給油機構7とを備えている。   Conventionally, as shown in FIG. 2, this type of hermetic compressor includes a compression mechanism 2 in a hermetic container 1, an electric motor 3 for driving the compression mechanism 2 provided below the compression mechanism 2, and the electric motor. 3 and a crankshaft 4 for transmitting the rotational force 3 to the compression mechanism 2, and the oil 6 of the oil sump 20 provided at the lower part in the sealed container 1 is passed through the crankshaft 4 to the bearing portion 66 of the crankshaft 4 and the compression mechanism. And an oil supply mechanism 7 that supplies the two sliding portions.

これによって、オイル6は給油機構7によって重力に逆らって軸受部66や圧縮機構2の摺動部に強制給油されて、円滑な動作を確保しながら、圧縮機構2で圧縮した冷媒ガスを密閉容器1内の電動機3の部分を通して電動機3を冷却した後、密閉容器1外に吐出するようにしており、軸受部66や圧縮機構2の摺動部に供給した後のオイルが供給圧や重力によって下方に移動しオイル溜め20に自然回収されるようにすることができる。しかし、冷媒ガスは常時オイルと接触してこれを随伴させ、密閉容器1から冷凍サイクルに供給される際にオイルを持ち込んでしまい、冷凍サイクル中での配管圧力損失や凝縮器や蒸発器などの熱交換器での熱交換効率の低下をもたらす問題がある。   As a result, the oil 6 is forcibly supplied to the bearing 66 and the sliding portion of the compression mechanism 2 against the gravity by the oil supply mechanism 7, and the refrigerant gas compressed by the compression mechanism 2 is sealed in a sealed container while ensuring smooth operation. After the motor 3 is cooled through the portion of the motor 3 in 1, the oil is discharged to the outside of the hermetic container 1, and the oil after being supplied to the sliding portion of the bearing portion 66 and the compression mechanism 2 is supplied by supply pressure or gravity. It can move downward and be naturally recovered in the oil sump 20. However, the refrigerant gas always comes into contact with oil and entrains it, and when it is supplied from the closed container 1 to the refrigeration cycle, it brings in oil, causing pipe pressure loss in the refrigeration cycle, condensers, evaporators, etc. There exists a problem which brings about the fall of the heat exchange efficiency in a heat exchanger.

これを解消するのに従来、圧縮機構から密閉容器内に吐出した冷媒ガスが電動機を通ってそれを冷却しながら密閉容器外に吐出されるまでの冷媒ガスの通路を、オイルの衝突分離や遠心分離が繰り返し生じるように設計して、密閉容器外に吐出される冷媒ガスにオイルが随伴しないように工夫したり、特許文献1が開示しているように軸受部や圧縮機構から電動機部へのオイルの排出経路を、圧縮機構からの吐出冷媒の電動機部への流路から独立して設け、排出オイルは電動機の固定子の上に滴下させた後伝い落ちにより下部のオイル溜めに回収されるようにする一方、冷媒ガスは電動機部の片側に向け吐出して固定子と密閉容器との間の片側の通路を下降して電動機下部に至った後、固定子と回転子との間のエアギャップを上昇して密閉容器外に吐出する整然とした冷媒の流れを作って滴下し伝い落ちるオイルを随伴させにくくするにようにしている。
特開平7−189963号公報
In order to solve this problem, conventionally, the refrigerant gas discharged from the compression mechanism into the sealed container passes through the electric motor until it is discharged to the outside of the sealed container while cooling it. It is designed so that separation occurs repeatedly, and it is devised so that oil does not accompany the refrigerant gas discharged outside the sealed container, or as disclosed in Patent Document 1, from the bearing part or the compression mechanism to the motor part. An oil discharge path is provided independently from the flow path of the refrigerant discharged from the compression mechanism to the electric motor section, and the discharged oil is dropped on the stator of the electric motor and then collected in the lower oil sump by passing down. On the other hand, the refrigerant gas is discharged toward one side of the motor part, descends on one side passage between the stator and the sealed container and reaches the lower part of the motor, and then air between the stator and the rotor. The gap is raised and sealed Creating a flow of orderly refrigerant discharged to the outside so that to hard to entrain oil falling Tsutai dropwise.
JP-A-7-189963

しかし、従来のどの方式も満足な気液分離はできていない。従来の方式は冷媒ガスやオイルの流れを拘束し切れず衝突や旋回が不十分であったりして、密閉容器外に吐出する冷媒ガスにオイルが混入することを防止し切れていない。   However, none of the conventional methods has achieved satisfactory gas-liquid separation. The conventional system does not completely restrict the flow of the refrigerant gas or oil, and does not sufficiently prevent the oil from being mixed into the refrigerant gas discharged out of the hermetic container due to insufficient collision and turning.

本発明の目的は、冷媒およびオイルをほぼ拘束して取扱って、十分に気液分離されたガスを吐出することができる密閉型圧縮機提供することにある。   An object of the present invention is to provide a hermetic compressor capable of handling gas and liquid separated sufficiently by handling refrigerant and oil in a substantially restrained manner.

本発明の密閉型圧縮機およびその気液分離吐出方法は、密閉容器内に圧縮機構と、この圧縮機構の下方に設けた圧縮機構を駆動するための電動機と、この電動機の回転力を圧縮機構部に伝達するためのクランク軸と、密閉容器内の下部に設けたオイル溜めのオイルを前記クランク軸を通じてクランク軸の軸受部や圧縮機構摺動部に供給する給油機構とを備えたことを基本構成とする密閉型圧縮機に関するものであり、前記目的を達成するために
、図1の密閉型圧縮機は、圧縮機構から吐出されるガスが、前記圧縮機構の上部の容器内吐出室、前記容器内吐出室から圧縮機構の下部に連通させる圧縮機構連通路、この圧縮機構連通路から回転子上部室に続く連絡路、回転子上部室と回転子下部室を連通させるように回転子に設けた回転子通路、回転子下部室、を順次経て電動機下に至り、さらに固定子の下部と上部とを連通させるように固定子または固定子と密閉容器との間に設けられた固定子通路を通って前記連絡路外まわりの固定子上部室に抜けた後、密閉容器の固定子上部室の位置以上の部分に設けられた外部吐出口を通って密閉容器外に吐出されるようにする容器内ガス通路を設けているのだが、冷媒およびオイルをほぼ拘束して取扱って、十分に気液分離されたガスを吐出するために、電動機下部にメッシュを設けた。これにより、吐出された全ての冷媒とオイルの混合ガスが電動機下部に設けたメッシュを通過することになることを特徴としている。
A hermetic compressor and a gas-liquid separation and discharge method according to the present invention include a compression mechanism in a hermetic container, an electric motor for driving a compression mechanism provided below the compression mechanism, and a rotational force of the electric motor as a compression mechanism. Basically, it has a crankshaft for transmission to the part, and an oil supply mechanism for supplying oil in an oil reservoir provided at the lower part in the sealed container to the bearing part of the crankshaft and the sliding part of the compression mechanism through the crankshaft. In order to achieve the above object, the hermetic compressor shown in FIG. 1 is configured such that the gas discharged from the compression mechanism includes a discharge chamber in the container above the compression mechanism, A compression mechanism communication passage communicating from the discharge chamber in the container to the lower portion of the compression mechanism, a communication path extending from the compression mechanism communication passage to the rotor upper chamber, and the rotor upper chamber and the rotor lower chamber communicating with each other. Rotor passage, The communication path passes through the stator lower passage and the stator passage provided between the stator and the hermetic container so that the lower portion and the upper portion of the stator communicate with each other through the lower chamber of the stator. After passing through the outer stator upper chamber, an in-container gas passage is provided to be discharged out of the hermetic container through an external discharge port provided in a portion above the position of the stator upper chamber of the hermetic container. However, in order to handle the refrigerant and oil almost constrained and discharge gas that has been sufficiently gas-liquid separated, a mesh is provided at the bottom of the motor. As a result, all of the discharged refrigerant and oil mixed gas pass through the mesh provided in the lower part of the electric motor.

前記電動機に設けたメッシュにより、電動機下を通過する冷媒とオイルの混合ガスは固定子下部を通過する際にメッシュ内を通過することになる。この際、メッシュにより衝突分離されオイルセパレータの役割を果たすことになり、冷媒とオイルは気液分離され、固定子上部室には冷媒のみが吐出される。   Due to the mesh provided in the electric motor, the mixed gas of refrigerant and oil passing under the electric motor passes through the mesh when passing through the lower part of the stator. At this time, the mesh is collided and separated to act as an oil separator, the refrigerant and oil are separated into gas and liquid, and only the refrigerant is discharged into the stator upper chamber.

このように圧縮機構から吐出されたガスを拘束して取扱うことにより、圧縮機構から吐出されたガスが圧縮機構内や軸受部まわりを経る間にそれらに供給されていたオイルと接触してそれを随伴していても、電動機下部にメッシュを設けることにより、冷媒とオイルの混合ガスはメッシュに衝突し、冷媒とオイルに気液分離されて固定子上部室には冷媒のみが吐出される。   By restricting and handling the gas discharged from the compression mechanism in this way, the gas discharged from the compression mechanism comes into contact with the oil supplied to them while passing through the compression mechanism and around the bearing portion. Even if it accompanies, by providing a mesh at the lower part of the motor, the mixed gas of the refrigerant and oil collides with the mesh, gas-liquid separation into the refrigerant and oil is performed, and only the refrigerant is discharged into the stator upper chamber.

本発明によれば、圧縮機構2からの吐出ガスおよびそれに乗じて随伴している圧縮機構2およびその軸受部66に供給した後のオイルをほぼ拘束して取扱い、メッシュ100を設けることにより、オイル6を含んだ冷媒ガス27はメッシュ100を通過し、オイル6はメッシュ100に付着し冷媒ガス27のみが連絡路34の外まわりの固定子上部室38に抜ける。   According to the present invention, the oil discharged from the compression mechanism 2 and the oil after being supplied to the compression mechanism 2 and the bearing portion 66 that accompanies the discharged gas are almost restrained and handled, and the mesh 100 is provided, thereby providing the oil. The refrigerant gas 27 containing 6 passes through the mesh 100, the oil 6 adheres to the mesh 100, and only the refrigerant gas 27 escapes to the stator upper chamber 38 around the outside of the communication path 34.

圧縮機構2からの吐出ガスおよびそれに乗じて随伴している圧縮機構およびその軸受部66に供給した後のオイル6がメッシュ100を通過することで、メッシュ100で気液分離を行って、オイル6を十分に分離したガスを密閉容器1外に吐出し供給することができる。   Gas discharged from the compression mechanism 2 and the accompanying compression mechanism and the oil 6 after being supplied to the bearing 66 of the compression mechanism 2 pass through the mesh 100, so that gas-liquid separation is performed by the mesh 100, and the oil 6 Can be discharged and supplied to the outside of the sealed container 1.

また、請求項2によれば、電動機下部からオイル溜りにかけてメッシュ100を設けることで、オイル溜まり20にあるオイル6が回転子3bの回転により巻き上げられるのを防ぐ役割を果たし、オイルが吹き上げられるの防ぐことを特徴としている。   Further, according to claim 2, by providing the mesh 100 from the lower part of the motor to the oil reservoir, the oil 6 in the oil reservoir 20 serves to prevent the oil 6 from being rolled up by the rotation of the rotor 3b, and the oil is blown up. It is characterized by prevention.

また、請求項3によれば、電動機下部からオイル溜りにかけてメッシュ100を設けることにより、オイル溜まり20にあるオイル6の封入量を油面を下げることなく、メッシュ100の体積分減らすことが出来、コスト削減に貢献できる。   Further, according to claim 3, by providing the mesh 100 from the lower part of the motor to the oil reservoir, the volume of the oil 6 in the oil reservoir 20 can be reduced without lowering the oil level, and the volume of the mesh 100 can be reduced. Contributes to cost reduction.

以下、本発明における実施の形態に係る密閉型圧縮機およびその気液分離吐出方法について図1を参照しながら説明し、本発明の理解に供する。   Hereinafter, a hermetic compressor according to an embodiment of the present invention and a gas-liquid separation and discharge method thereof will be described with reference to FIG. 1 for understanding of the present invention.

(実施の形態1)
本実施の形態は縦型でスクロール式の圧縮機構を内蔵した冷凍サイクル用の密閉型圧縮機の場合の一例であり、圧縮対象は冷媒ガスである。しかし、本発明はこれに限られるこ
とはなく、ロータリ式の圧縮機構など各種の圧縮機構、それを駆動する電動機とともに密閉容器内に内蔵したガス一般を対象として圧縮し、圧縮機構が密閉容器内を上下に仕切り、その下部に電動機を収容する密閉型圧縮機であればその全般に適用して有効であり、本発明の範疇に属する。
(Embodiment 1)
This embodiment is an example of a case of a hermetic compressor for a refrigeration cycle incorporating a vertical scroll-type compression mechanism, and a compression target is a refrigerant gas. However, the present invention is not limited to this, and various types of compression mechanisms such as a rotary compression mechanism, as well as the gas built in the sealed container together with the electric motor that drives the compression mechanism, are compressed. A hermetic compressor that divides the upper and lower parts and accommodates an electric motor in the lower part is effective when applied to all of them and belongs to the category of the present invention.

本実施の形態の密閉型圧縮機は図1に示すように、密閉容器1内に溶接や焼き嵌めなどして固定したクランク軸4の主軸受部材11と、この主軸受部材11上にボルト止めした固定スクロール12との間に、固定スクロール12と噛み合う旋回スクロール13を挟み込んでスクロール式の圧縮機構2を構成し、旋回スクロール13と主軸受部材11との間に旋回スクロール13の自転を防止して円軌道運動するように案内するオルダムリングなどによる自転規制機構14を設けて、クランク軸4の上端にある主軸部4aにて旋回スクロール13を偏心駆動することにより旋回スクロール13を円軌道運動させ、これにより固定スクロール12と旋回スクロール13との間に形成している圧縮室15が外周側から中央部に移動しながら小さくなるのを利用して、密閉容器1外に通じた吸入パイプ16および固定スクロール12の外周部の吸入口17から冷媒ガス27を吸入して圧縮していき所定圧以上になった冷媒ガスは固定スクロール12の中央部の吐出口18からリード弁19を押し開いて密閉容器1内に吐出させることを繰り返す。   As shown in FIG. 1, the hermetic compressor according to the present embodiment includes a main bearing member 11 of a crankshaft 4 fixed by welding or shrink fitting in the hermetic container 1, and bolts on the main bearing member 11. The scroll-type compression mechanism 2 is configured by sandwiching the orbiting scroll 13 meshing with the fixed scroll 12 between the fixed scroll 12 and the rotation of the orbiting scroll 13 between the orbiting scroll 13 and the main bearing member 11. A rotation restricting mechanism 14 such as an Oldham ring that guides the orbit to move in a circular orbit is provided, and the orbiting scroll 13 is moved in an orbit by driving the orbiting scroll 13 eccentrically by the main shaft portion 4a at the upper end of the crankshaft 4. As a result, the compression chamber 15 formed between the fixed scroll 12 and the orbiting scroll 13 becomes smaller while moving from the outer peripheral side to the central portion. , The refrigerant gas 27 is sucked from the suction pipe 16 communicating with the outside of the sealed container 1 and the suction port 17 in the outer peripheral portion of the fixed scroll 12 and compressed, and the refrigerant gas that exceeds the predetermined pressure is fixed to the fixed scroll. The reed valve 19 is pushed open from the discharge port 18 at the center of 12 and discharged into the sealed container 1 repeatedly.

クランク軸4の下端は密閉容器1の下端部のオイル溜め20に達して、密閉容器1内に溶接や焼き嵌めして固定された副軸受21により軸受され、安定に回転することができる。電動機3は主軸受部材11と副軸受21との間に位置して、密閉容器1に溶接や焼き嵌めなどして固定された固定子3aと、クランク軸4の途中の外まわりに一体に結合された回転子3bとで構成され、回転子3bの上下端面の外周部分にはピン22により止め付けられたバランスウエイト23、24が設けられ、これにより回転子3bおよびクランク軸4が安定して回転し、旋回スクロール13を安定して円軌道運動させることができる。   The lower end of the crankshaft 4 reaches an oil sump 20 at the lower end of the sealed container 1 and is supported by a secondary bearing 21 fixed by welding or shrink fitting in the sealed container 1 so that it can rotate stably. The electric motor 3 is located between the main bearing member 11 and the auxiliary bearing 21 and is integrally coupled to a stator 3 a fixed to the sealed container 1 by welding or shrink fitting, and an outer periphery in the middle of the crankshaft 4. The balance weights 23 and 24 fixed by the pins 22 are provided on the outer peripheral portions of the upper and lower end surfaces of the rotor 3b, so that the rotor 3b and the crankshaft 4 rotate stably. Thus, the orbiting scroll 13 can be stably moved in a circular orbit.

給油機構7はクランク軸4の下端で駆動されるポンプ25によってオイル溜め20内のオイル6をクランク軸4を通縦しているオイル供給穴26を通じて圧縮機構2の各部の軸受部66や圧縮機構2の各摺動部に供給する。供給後のオイル6は供給圧や重力によって逃げ場を求めるようにして軸受部66を通じ主軸受部材11の下に流出して滴下し、最終的にオイル溜め20に回収される。   The oil supply mechanism 7 is driven by a pump 25 driven at the lower end of the crankshaft 4, and the oil 6 in the oil reservoir 20 is passed through the oil supply hole 26 passing through the crankshaft 4 and the bearing portions 66 and the compression mechanisms of the respective parts of the compression mechanism 2. 2 is supplied to each sliding part. The supplied oil 6 flows out and drops below the main bearing member 11 through the bearing portion 66 so as to obtain a clearance by supply pressure or gravity, and is finally collected in the oil sump 20.

しかし、実際には既述したように、圧縮機構2から吐出される図1に破線矢印で示す冷媒ガス27には圧縮機構2内で接触したオイル6を随伴させていたり、主軸受部材11の下に滴下してくる供給後のオイル6を飛散させて随伴させたりしていて、従来これを十分に分離できず密閉容器1外に吐出する冷媒ガスとともにオイルも吐出されてしまう問題がある。   However, actually, as already described, the refrigerant gas 27 indicated by the broken line arrow in FIG. 1 discharged from the compression mechanism 2 is accompanied by the oil 6 that has contacted within the compression mechanism 2, or the main bearing member 11. There is a problem that the supplied oil 6 that is dripped down is scattered and accompanied, and the oil cannot be sufficiently separated conventionally and the oil is discharged together with the refrigerant gas discharged outside the sealed container 1.

図1に示す実施の形態はこのような問題を解消するために、圧縮機構2から吐出される冷媒ガス27が、圧縮機構2の上部の容器内吐出室31、この容器内吐出室31と圧縮機構2の下部を連通させる圧縮機構連通路32、この圧縮機構連通路32から回転子上部室33に続く連絡路34、回転子上部室33と回転子下部室35を連通させるように回転子3bに設けた回転子通路36、回転子下部室35を順次経て電動機3の下に至り、さらに固定子3aの下部と上部とを連通させるように固定子3aまたは固定子3aと密閉容器1との間に設けられた固定子通路37を通って連絡路34の外まわりの固定子上部室38に抜けた後密閉容器1の固定子上部室38の位置以上の部分に設けられた外部吐出パイプ39を通って密閉容器1外に吐出されるのだが、オイル6を含んだ冷媒ガス27がそのまま固定子上部室38に抜けないように、図1のように固定子下部からオイル溜り20にかけてメッシュ100を設ける。   In the embodiment shown in FIG. 1, in order to solve such a problem, the refrigerant gas 27 discharged from the compression mechanism 2 is compressed into the container discharge chamber 31 above the compression mechanism 2 and the container discharge chamber 31. A compression mechanism communication path 32 for communicating the lower part of the mechanism 2, a communication path 34 continuing from the compression mechanism communication path 32 to the rotor upper chamber 33, and the rotor 3 b so as to communicate the rotor upper chamber 33 and the rotor lower chamber 35. Between the stator 3a or the stator 3a and the hermetic container 1 so that the lower part and the upper part of the stator 3a are further communicated with each other through the rotor passage 36 and the rotor lower chamber 35 that are provided in After passing through the stator passage 37 provided between them and passing through the stator upper chamber 38 around the outside of the communication path 34, an external discharge pipe 39 provided in a portion above the position of the stator upper chamber 38 of the sealed container 1 is provided. Discharged through the sealed container 1 I will, but as refrigerant gas 27 containing oil 6 can not be pulled out as it is to the stator upper chamber 38, providing the mesh 100 over the oil sump 20 from the stator lower portion as shown in FIG.

回転子通路36を通った後、オイル6を含んだ冷媒ガス27は固定子通路37を通過し、連絡路34の外まわりの固定子上部室38に抜けるのだが、密閉容器1固定子3b下部からオイル溜り20にかけてメッシュ100を設けることによりオイル6を含んだ冷媒ガス27はメッシュ100に衝突し、オイル6はメッシュ100に付着し冷媒ガス27のみが固定子通路37を通過し連絡路34の外まわりの固定子上部室38に抜ける。   After passing through the rotor passage 36, the refrigerant gas 27 containing the oil 6 passes through the stator passage 37 and passes through the stator upper chamber 38 around the outside of the communication path 34, but from the lower part of the hermetic container 1 stator 3 b. By providing the mesh 100 over the oil reservoir 20, the refrigerant gas 27 containing the oil 6 collides with the mesh 100, the oil 6 adheres to the mesh 100, and only the refrigerant gas 27 passes through the stator passage 37 and goes around the communication path 34. To the stator upper chamber 38.

気液分離されメッシュ100に付着したオイル6は、ミスト状態から凝集しオイル滴に成長し密閉容器1内壁や、副軸受け21を伝い落ちながら下のオイル溜め20に滴下して、冷媒ガス27に乗じる機会がほとんどなしに回収されるようにするので、冷媒ガス27に随伴しているオイル6を効率よく分離し回収することができる。   The oil 6 separated from the gas and liquid and adhered to the mesh 100 is aggregated from the mist state and grows into oil droplets, drops on the inner wall of the hermetic container 1 and the sub-bearing 21, drops into the lower oil reservoir 20, and enters the refrigerant gas 27. Since the recovery is performed with almost no opportunity for multiplication, the oil 6 accompanying the refrigerant gas 27 can be efficiently separated and recovered.

以上のようにしてオイル6を分離された冷媒ガス27は、密閉容器1の固定子上部室38の位置以上の部分にある外部吐出パイプ39から密閉容器1外に吐出するので、オイル6を随伴している冷媒ガス27と接触することなくオイルが十分に分離された状態で密閉容器1外に吐出して冷凍サイクルに供給することができる。従て、冷凍サイクル中での配管圧力損失や凝縮器、蒸発器などの熱交換器での熱交換効率の低下を防止することができる。   The refrigerant gas 27 from which the oil 6 has been separated as described above is discharged from the external discharge pipe 39 outside the position of the stator upper chamber 38 of the closed container 1 to the outside of the closed container 1. The oil can be discharged out of the sealed container 1 and supplied to the refrigeration cycle in a state where the oil is sufficiently separated without coming into contact with the refrigerant gas 27. Accordingly, it is possible to prevent a pipe pressure loss in the refrigeration cycle and a decrease in heat exchange efficiency in a heat exchanger such as a condenser or an evaporator.

本実施の形態は縦型でスクロール式の圧縮機構を内蔵した冷凍サイクル用の密閉型圧縮機の場合の一例であり、圧縮対象は冷媒ガスである。しかし、本発明はこれに限られることはなく、ロータリ式の圧縮機構など各種の圧縮機構、それを駆動する電動機とともに密閉容器内に内蔵したガス一般を対象として圧縮し、圧縮機構が密閉容器内を上下に仕切り、その下部に電動機を収容する密閉型圧縮機であればその全般に適用して有効であり、本発明の範疇に属する。   This embodiment is an example of a closed type compressor for a refrigeration cycle incorporating a vertical scroll-type compression mechanism, and a compression target is a refrigerant gas. However, the present invention is not limited to this, and various types of compression mechanisms such as a rotary compression mechanism, as well as the gas built in the sealed container together with the electric motor that drives the compression mechanism, are compressed. A hermetic compressor that divides the upper and lower parts and accommodates an electric motor in the lower part is effective when applied to all of them and belongs to the category of the present invention.

本発明の実施の形態に係る1つの密閉型圧縮機を示す断面図Sectional drawing which shows one closed type compressor which concerns on embodiment of this invention 従来例を示す断面図Sectional view showing a conventional example

符号の説明Explanation of symbols

1 密閉容器
2 圧縮機構
3 電動機
3a 固定子
3b 回転子
4 クランク軸
4a 主軸部
6 オイル
7 給油機構
12 固定スクロール
13 旋回スクロール
14 自転規制機構
15 圧縮室
16 吸入パイプ
17 吸入口
18 吐出口
20 オイル溜まり
21 副軸受
23、24 バランスウエイト
25 ポンプ
26 オイル供給穴
27 冷媒ガス
31 容器内吐出室
33 回転子上部室
34 連絡路
35 回転子下部室
36 回転子通路
37 固定子通路
38 固定子上部室
39 外部吐出パイプ
66 軸受部
100 メッシュ
DESCRIPTION OF SYMBOLS 1 Airtight container 2 Compression mechanism 3 Electric motor 3a Stator 3b Rotor 4 Crankshaft 4a Main shaft part 6 Oil 7 Oil supply mechanism 12 Fixed scroll 13 Orbiting scroll 14 Rotation restriction mechanism 15 Compression chamber 16 Suction pipe 17 Suction port 18 Discharge port 20 Oil reservoir 21 Sub-bearings 23, 24 Balance weight 25 Pump 26 Oil supply hole 27 Refrigerant gas 31 Discharge chamber in container 33 Rotor upper chamber 34 Communication path 35 Rotor lower chamber 36 Rotor passage 37 Stator passage 38 Stator upper chamber 39 External Discharge pipe 66 Bearing 100 mesh

Claims (3)

密閉容器内にスクロール圧縮機構と、この圧縮機構の下方に設けた圧縮機構を駆動するための電動機と、この電動機の回転力を圧縮機構部に伝達するためのクランク軸と、密閉容器内の下部に設けたオイル溜めのオイルをクランク軸を通じてクランク軸の軸受部や圧縮機構摺動部に供給する給油機構とを備え、電動機下部からオイル溜りにかけてすべての冷媒が通過するようにメッシュを設けた密閉型圧縮機。 A scroll compression mechanism in the hermetic container, an electric motor for driving the compression mechanism provided below the compression mechanism, a crankshaft for transmitting the rotational force of the electric motor to the compression mechanism, and a lower part in the hermetic container An oil supply mechanism that supplies the oil in the oil reservoir provided in the motor to the crankshaft bearing and compression mechanism sliding part through the crankshaft, and a mesh that allows all refrigerant to pass from the lower part of the motor to the oil reservoir Mold compressor. 電動機下部からオイル溜りにかけて密閉容器底部に設けてあるオイル溜まり内のオイルが回転子の回転により吹き上げられないようにメッシュを設けた請求項1記載の密閉型圧縮機。 2. The hermetic compressor according to claim 1, wherein a mesh is provided so that the oil in the oil reservoir provided at the bottom of the hermetic container from the lower part of the motor to the oil reservoir is not blown up by the rotation of the rotor. 電動機下部からオイル溜りにかけて密閉容器底部に設けてあるオイル溜まり内のオイル量を油面を下げることなく減らせるようにメッシュを設けた請求項1記載の密閉型圧縮機。 2. The hermetic compressor according to claim 1, wherein a mesh is provided so as to reduce the amount of oil in the oil reservoir provided at the bottom of the sealed container from the lower part of the motor to the oil reservoir without lowering the oil level.
JP2006204366A 2006-07-27 2006-07-27 Hermetic compressor Withdrawn JP2008031880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006204366A JP2008031880A (en) 2006-07-27 2006-07-27 Hermetic compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006204366A JP2008031880A (en) 2006-07-27 2006-07-27 Hermetic compressor

Publications (1)

Publication Number Publication Date
JP2008031880A true JP2008031880A (en) 2008-02-14

Family

ID=39121589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006204366A Withdrawn JP2008031880A (en) 2006-07-27 2006-07-27 Hermetic compressor

Country Status (1)

Country Link
JP (1) JP2008031880A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014152683A (en) * 2013-02-07 2014-08-25 Mitsubishi Heavy Ind Ltd Hermetic scroll compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014152683A (en) * 2013-02-07 2014-08-25 Mitsubishi Heavy Ind Ltd Hermetic scroll compressor

Similar Documents

Publication Publication Date Title
KR100572391B1 (en) Hermetic compressor
JP4979503B2 (en) Scroll compressor
JP3961189B2 (en) Hermetic compressor and gas-liquid separation and discharge method
JP4127108B2 (en) Hermetic compressor
JP4256801B2 (en) Compressor and air conditioner
JP4149947B2 (en) Compressor
JP2006336599A (en) Sealed compressor
JP2009030464A (en) Hermetic compressor
JP2008031880A (en) Hermetic compressor
JP2006348928A (en) Compressor
JP2009257272A (en) Hermetically-sealed compressor
JP4241182B2 (en) Compressor, refrigeration cycle and heat pump water heater
JP2007309280A (en) Hermetic compressor
JP2010121547A (en) Hermetic compressor
JP2010255482A (en) Hermetically-sealed compressor
JP2004332628A (en) Hermetic compressor
JP2005299431A (en) Hermetic compressor
JP2006226207A (en) Hermetic compressor
JP2009062839A (en) Hermetic compressor
JP2009103030A (en) Hermetic compressor
JP2008002416A (en) Hermetic compressor
JP5272600B2 (en) Hermetic compressor
JP5136498B2 (en) Hermetic compressor
JP2005344537A (en) Scroll compressor
JP2008002418A (en) Hermetic compressor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090603

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20090714

A761 Written withdrawal of application

Effective date: 20100209

Free format text: JAPANESE INTERMEDIATE CODE: A761