JPH0633785B2 - Compressor - Google Patents
CompressorInfo
- Publication number
- JPH0633785B2 JPH0633785B2 JP6631587A JP6631587A JPH0633785B2 JP H0633785 B2 JPH0633785 B2 JP H0633785B2 JP 6631587 A JP6631587 A JP 6631587A JP 6631587 A JP6631587 A JP 6631587A JP H0633785 B2 JPH0633785 B2 JP H0633785B2
- Authority
- JP
- Japan
- Prior art keywords
- compression mechanism
- closed container
- electric motor
- compressor
- hermetic terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、空気調和機、冷蔵庫等の冷凍機用の圧縮機
に関するものである。TECHNICAL FIELD The present invention relates to a compressor for a refrigerator such as an air conditioner or a refrigerator.
従来の技術 従来、密閉容器内に吸入圧力が作用するいわゆる「低圧
形」の圧縮機は、空気調和機等の運転条件によっては、
密閉容器内に多量の液冷媒が戻される。密閉容器内に多
量の液冷媒が戻されると、圧縮機構を駆動する電動機用
のハーメチック端子が、密閉容器の側面にある場合に
は、多量の液冷媒が密閉容器内の流れに飛ばされ、直接
ハーメチック端子に当り冷され結露等を発生し、圧縮機
の電気的な損傷を招く恐れを有していた。さらに、多量
の液冷媒が、形状の複雑なハーメチック端子に当たると
密閉容器内で飛散され、液冷媒中の油も密閉容器内で激
しく飛散することになる。この密閉容器内で飛散してい
る油分は、圧縮機構部へ吸入され、圧縮過程を経て、圧
縮機の外部へ持ちだされることになり、圧縮機の信頼性
を低下させると同時に冷凍能力をも低下させる。従っ
て、いわゆる「低圧形」の圧縮機において、密閉容器内
に戻される多量の液冷媒による電気的な損傷、あるいは
信頼性、冷凍能力の低下を防止することが重要である。2. Description of the Related Art Conventionally, a so-called "low pressure type" compressor in which suction pressure acts in a closed container is, depending on operating conditions such as an air conditioner,
A large amount of liquid refrigerant is returned to the closed container. When a large amount of liquid refrigerant is returned to the closed container, if the hermetic terminal for the electric motor that drives the compression mechanism is on the side surface of the closed container, a large amount of liquid refrigerant is blown into the flow in the closed container and directly There was a risk that the compressor would hit the hermetic terminal and be cooled to cause dew condensation, etc., resulting in electrical damage to the compressor. Furthermore, when a large amount of liquid refrigerant hits a hermetic terminal having a complicated shape, the liquid refrigerant is scattered in the closed container, and the oil in the liquid refrigerant is also strongly scattered in the closed container. The oil scattered in this closed container is sucked into the compression mechanism, and is taken out of the compressor through the compression process, reducing the reliability of the compressor and at the same time increasing the refrigerating capacity. Also lowers. Therefore, in a so-called "low pressure type" compressor, it is important to prevent electrical damage due to a large amount of liquid refrigerant returned to the closed container, or deterioration of reliability and refrigerating capacity.
本発明は、「低圧形」の圧縮機の密閉容器の側壁に電動
機用ハーメチック端子を有する構造において、密閉容器
内に多量の液冷媒が戻されても、直接、ハーメチックに
当らないようにするためのものである。The present invention, in a structure having a hermetic terminal for an electric motor on a side wall of a closed container of a "low pressure type" compressor, in order to prevent a large amount of liquid refrigerant from being returned to the closed container, so as not to hit the hermetic directly. belongs to.
第４図は、従来の圧縮機の例である。FIG. 4 is an example of a conventional compressor.
密閉容器１の内部に電動機の固定子２と回転子３を配設
し、電動機の上方にスクロール式の圧縮機構４を設け、
その駆動軸のクランク軸５は回転子３に結合されてい
る。The stator 2 and the rotor 3 of the electric motor are arranged inside the closed container 1, and the scroll type compression mechanism 4 is provided above the electric motor,
The crankshaft 5 of the drive shaft is connected to the rotor 3.
密閉容器１の側面には、電動機用のハーメチック端子６
が設けられている。冷媒は、吸入管７から密閉容器１内
に入り、一部は吸入口８から圧縮機構４に吸入され、一
部は、密閉容器１内の流れに飛ばされ、密閉容器１内を
飛散する。９は固定渦巻羽根部品で、１０はその渦巻羽
根、１１はその鏡板である。１２は旋回渦巻羽根部品
で、１３，１４はそれぞれの渦巻羽根と鏡板である。渦
巻羽根１０と１３は互いに組み合わされて、外周から中
心に向って移動しながらその容積を縮小して圧縮作用を
する圧縮室１５を構成する。固定渦巻羽根部品９の中心
部の吐出口１６から出た冷媒は吐出室１７から圧縮機の
吐出管１８に導かれる。A hermetic terminal 6 for an electric motor is provided on the side surface of the closed container 1.
Is provided. The refrigerant enters the closed container 1 through the suction pipe 7, part of which is sucked into the compression mechanism 4 through the suction port 8, and part of which is blown into the flow in the closed container 1 and scattered inside the closed container 1. Reference numeral 9 is a fixed spiral blade component, 10 is the spiral blade, and 11 is its end plate. Reference numeral 12 is a swirling spiral blade component, and 13 and 14 are respective spiral blades and end plates. The spiral blades 10 and 13 are combined with each other to form a compression chamber 15 that reduces the volume of the compression chamber 15 while moving from the outer circumference toward the center. The refrigerant discharged from the discharge port 16 at the center of the fixed spiral vane component 9 is guided from the discharge chamber 17 to the discharge pipe 18 of the compressor.
圧縮室１５の圧力によって旋回渦巻羽根部品１２が圧縮
室１５の反対側に押しつけられる力は軸受部品１９に固
定したスラスト軸受２０で支承する。クランク軸５の第
１主軸２１、第２主軸２２は軸受部品１９に支承されて
いる。The thrust bearing 20 fixed to the bearing component 19 bears the force by which the pressure of the compression chamber 15 pushes the swirling spiral blade component 12 against the opposite side of the compression chamber 15. The first main shaft 21 and the second main shaft 22 of the crankshaft 5 are supported by the bearing component 19.
第１主軸２１の内側に、主軸の軸心から偏心して旋回駆
動軸受２３を設け、この旋回駆動軸受２３に旋回渦巻羽
根部品１２の鏡板１４に設けた旋回駆動軸２４を嵌合さ
せる。A swivel drive bearing 23 is provided inside the first main shaft 21 so as to be eccentric from the axis of the main shaft, and a swivel drive shaft 24 provided on the end plate 14 of the swirl spiral blade component 12 is fitted into the swivel drive bearing 23.
スラスト軸受２０の外周に、円形の環状体２５の両面に
キー２６を設けた、前記旋回渦巻羽根部品１２の自軸を
拘束するための、自転拘束部品２７が配置されている。On the outer circumference of the thrust bearing 20, there are arranged rotation restraint parts 27, which are provided with keys 26 on both sides of a circular annular body 25, for restraining the own axis of the swirling spiral blade part 12.
密閉容器１の下部に潤滑油２８が溜められており、クラ
ンク軸５の給油窟２９から給油ポンプ３０により、各摺
動部へ潤滑油が供給される。Lubricating oil 28 is stored in the lower portion of the closed container 1, and lubricating oil is supplied to each sliding portion from an oil supply cavity 29 of the crankshaft 5 by an oil supply pump 30.
発明が解決しようとする問題点 しかし、このような構造のものでは、空気調和機等の運
転条件によって、密閉容器内に多量の液冷媒が戻される
と、ハーメチック端子に多量の液冷媒が直接当たること
になり冷され、結露等を生じ圧縮機の電気的な損傷を引
き起こすばかりでなく、ハーメチック端子に衝突し、飛
散した液冷媒中の油分が、吸入孔より吸入され圧縮室を
経て外部へ持ち出され、圧縮機の信頼性を低下させ、ひ
いては、冷凍能力の低下をも招く恐れを有していた。Problems to be Solved by the Invention However, in such a structure, when a large amount of liquid refrigerant is returned to the hermetically sealed container due to operating conditions of the air conditioner or the like, a large amount of liquid refrigerant directly hits the hermetic terminal. In addition to being cooled and causing dew condensation, etc., causing electrical damage to the compressor, the oil in the liquid refrigerant that has collided with the hermetic terminal and splashed is sucked out through the suction hole and then taken out to the outside via the compression chamber. Therefore, there is a possibility that the reliability of the compressor may be lowered and the refrigerating capacity may be lowered.
そこで本発明は、多量の液冷媒が密閉容器内に戻されて
も、直接に多量の液冷媒がハーメチック端子に当たらな
いようにするものである。Therefore, the present invention is to prevent a large amount of liquid refrigerant from directly contacting the hermetic terminal even if a large amount of liquid refrigerant is returned into the closed container.
問題点を解決するための手段 そこで上記問題点を解決する本発明の技術的な手段は、
密閉容器の上方に、固定渦巻羽根部品と旋回渦巻羽根部
品を組み合わせてなるスクロール式の圧縮機構を設け、
前記圧縮機構の下方に電動機を配設し、前記圧縮機構の
クランク軸と結合し、前記圧縮機構と前記電動機の中間
位置の前記密閉容器壁に、前記電動機に電力を供給する
ハーメチック端子と吸入管とを配設し、前記密閉容器の
吸入管から前記圧縮機構に設けた圧縮機構の吸入孔に導
く吸入通路を構成し、前記電動機の回転方向に、前記密
閉容器の吸入管から前記ハーメチック端子に到る通路空
間に仕切を配設したものである。Therefore, the technical means of the present invention for solving the above problems,
Provided above the closed container is a scroll-type compression mechanism that is a combination of fixed spiral blade parts and swirl spiral blade parts.
An electric motor is arranged below the compression mechanism, is coupled to a crankshaft of the compression mechanism, and a hermetic terminal and a suction pipe for supplying electric power to the electric motor are provided on the wall of the closed container at an intermediate position between the compression mechanism and the electric motor. And a suction passage leading from the suction pipe of the closed container to the suction hole of the compression mechanism provided in the compression mechanism, and in the rotation direction of the electric motor from the suction pipe of the closed container to the hermetic terminal. A partition is arranged in the passage space that reaches.
作 用 本発明の技術的手段による作用は次の通りである。密閉
容器の吸入管から多量に戻された液冷媒のうち、圧縮機
構の吸入孔から吸入されなかった液冷媒は、前記容器の
吸入管からハーメチック端子に到る空間通路に設けられ
た仕切に当り下方へ落され、ハーメチック端子には衝突
しない。Operation The operation of the technical means of the present invention is as follows. Of the liquid refrigerant that was returned in large quantities from the suction pipe of the closed container, the liquid refrigerant that was not sucked through the suction hole of the compression mechanism hits the partition provided in the space passage from the suction pipe of the container to the hermetic terminal. It is dropped downward and does not collide with the hermetic terminal.
実施例 第１図は本発明の一実施例を示す圧縮機の断面図で、第
２図及び第３図はその詳細図である。Embodiment FIG. 1 is a sectional view of a compressor showing an embodiment of the present invention, and FIGS. 2 and 3 are detailed views thereof.
第１図中、４０は固定渦巻羽根部品、４１は旋回渦巻羽
根部品で圧縮機構４２を構成する。４３は圧縮機構４２
を駆動する電動機であり、クランク軸４４と結合されて
いる。４５はクランク軸４４を支承する軸受部品であ
る。４６は圧縮機構４２と電動機４３の中間位置の密閉
容器壁４７に設けられた、電動機４３に電力を供給する
ためのハーメチック端子である。４８は、密閉容器４９
の吸入管５０から圧縮機構４２の下方に設けられた吸入
孔５１へ到る吸入通路である。仕切板５２は、電動機４
３の回転方向に、密閉容器４９の吸入管５０からハーメ
チック端子４６に到る空間通路５３に設けられ、軸受部
品４５にネジ止めされている。第３図中５４はネジ止め
用の穴である。In FIG. 1, reference numeral 40 is a fixed spiral blade part, and 41 is a swirl spiral blade part, which constitutes a compression mechanism 42. 43 is a compression mechanism 42
Is an electric motor that drives the crankshaft 44 and is connected to the crankshaft 44. Reference numeral 45 is a bearing component that supports the crankshaft 44. Reference numeral 46 denotes a hermetic terminal for supplying electric power to the electric motor 43, which is provided on the closed container wall 47 at an intermediate position between the compression mechanism 42 and the electric motor 43. 48 is a closed container 49
Is a suction passage extending from the suction pipe 50 to a suction hole 51 provided below the compression mechanism 42. The partition plate 52 is the electric motor 4
It is provided in the space passage 53 extending from the suction pipe 50 of the closed container 49 to the hermetic terminal 46 in the rotation direction of 3, and is screwed to the bearing component 45. In FIG. 3, 54 is a hole for screwing.
空気調和機等の運転条件によって吸入管５０から密閉容
器４９内に多量に戻された液冷媒のうち、一部は、吸入
通路４８を通り圧縮機構４２の吸入孔５１に吸入され、
圧縮機構４２を経て密閉容器４９外へ吐出される。しか
し、大半の液冷媒は、吸入孔５１に吸入されず、空間通
路５３を経て、仕切板５２に衝突し、下方へ落され、直
接ハーメチック端子４６へは衝突しない。従って、ハー
メチック端子４６は冷されることなく、結露等による圧
縮機の電気的損傷を発生しない。A part of the liquid refrigerant that has been returned in large quantity from the suction pipe 50 into the closed container 49 due to operating conditions of the air conditioner or the like is sucked into the suction hole 51 of the compression mechanism 42 through the suction passage 48,
It is discharged to the outside of the closed container 49 through the compression mechanism 42. However, most of the liquid refrigerant is not sucked into the suction hole 51, collides with the partition plate 52 through the space passage 53, drops downward, and does not directly collide with the hermetic terminal 46. Therefore, the hermetic terminal 46 is not cooled and the compressor is not electrically damaged due to dew condensation or the like.
本実施例では、軸受部品に仕切板をネジにより取付けた
が、軸受部品の一部を同形状に成形しても同様の効果を
奏する。In this embodiment, the partition plate is attached to the bearing component with the screw, but the same effect can be obtained even if a part of the bearing component is formed in the same shape.
発明の効果 以上のように本発明によれば、密閉容器内に多量の液冷
媒が戻されても、その大部分は、仕切により下方へ落さ
れ、直接電動機用ハーメチック端子へは当たらないた
め、結露などによる圧縮機の電気的損傷を防止できる。As described above, according to the present invention, even if a large amount of liquid refrigerant is returned to the closed container, most of it is dropped downward by the partition and does not directly hit the hermetic terminal for the electric motor. It is possible to prevent electrical damage to the compressor due to dew condensation.
また、複雑な形状のハーメチック端子に当らないため、
密閉容器内への飛散も減少し、液冷媒中に含まれる油分
の圧縮機構への吸入量も減少する。従って圧縮機外部に
持出される油量も減少し、信頼性の高い圧縮機を実現で
きる。又、冷媒中の油分の多大による冷凍能力の低下を
も防止できる。Also, because it does not hit the hermetic terminal of complicated shape,
The amount of oil contained in the liquid refrigerant is reduced as well as the amount of oil taken into the compression mechanism is reduced. Therefore, the amount of oil carried out to the outside of the compressor is reduced, and a highly reliable compressor can be realized. Further, it is possible to prevent a reduction in refrigerating capacity due to a large amount of oil in the refrigerant.
【図面の簡単な説明】 第１図は本発明の一実施例を示す圧縮機の断面図、第２
図は第１図のＡＡ線断面図、第３図は同圧縮機に用いる
仕切板の平面図、第４図は従来の圧縮機の断面図であ
る。 ４０……固定渦巻羽根部品、４１……旋回渦巻羽根部
品、４２……圧縮機構、４３……電動機、４４……クラ
ンク軸、４６……ハーメチック端子、４７……密閉容器
壁、４８……吸入通路、４９……密閉容器、５０……吸
入管、５１……吸入孔、５２……仕切板、５３……空間
通路。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a compressor showing an embodiment of the present invention, FIG.
1 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a plan view of a partition plate used in the compressor, and FIG. 4 is a sectional view of a conventional compressor. 40 ... Fixed spiral blade part, 41 ... Swirl spiral blade part, 42 ... Compression mechanism, 43 ... Electric motor, 44 ... Crankshaft, 46 ... Hermetic terminal, 47 ... Sealed container wall, 48 ... Suction Passage, 49 ... airtight container, 50 ... suction pipe, 51 ... suction hole, 52 ... partition plate, 53 ... space passage.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山村 道生 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 村松 繁 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Michio Yamamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Shigeru Muramatsu 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.
Claims (1)
旋回渦巻羽根部品を組み合わせてなるスクロール式の圧
縮機構を設け、前記圧縮機構の下方に電動機を配設し、
前記圧縮機構のクランク軸と結合し、前記圧縮機構と前
記電動機の中間位置の前記密閉容器壁に、前記電動機に
電力を供給するハーメチック端子と吸入管とを配設し、
前記密閉容器の吸入管から前記圧縮機構に設けた圧縮機
構の吸入孔に導く吸入通路を構成し、前記電動機の回転
方向に、前記密閉容器の吸入管から前記ハーメチック端
子に到る通路空間に仕切を配設した圧縮機。1. A scroll-type compression mechanism, which is a combination of a fixed spiral vane component and a swirl spiral vane component, is provided above a closed container, and an electric motor is disposed below the compression mechanism.
A hermetic terminal for supplying electric power to the electric motor and a suction pipe are arranged on the airtight container wall at an intermediate position between the compression mechanism and the electric motor, which is coupled with the crankshaft of the electric compression mechanism.
A suction passage that leads from the suction pipe of the closed container to a suction hole of a compression mechanism provided in the compression mechanism is configured, and is partitioned into a passage space extending from the suction pipe of the closed container to the hermetic terminal in the rotation direction of the electric motor. Compressor with.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6631587A JPH0633785B2 (en) | 1987-03-20 | 1987-03-20 | Compressor |
| MYPI88000253A MY104296A (en) | 1987-03-12 | 1988-03-11 | Scroll compressor |
| KR1019880002522A KR910002405B1 (en) | 1987-03-12 | 1988-03-11 | Scroll compressor |
| GB8805850A GB2202905B (en) | 1987-03-12 | 1988-03-11 | Scroll compressor |
| CN88101361A CN1016259B (en) | 1987-03-12 | 1988-03-12 | Scroll compressor |
| US07/167,844 US4886435A (en) | 1987-03-12 | 1988-03-14 | Scroll compressor with intermittent oil supply passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6631587A JPH0633785B2 (en) | 1987-03-20 | 1987-03-20 | Compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63235689A JPS63235689A (en) | 1988-09-30 |
| JPH0633785B2 true JPH0633785B2 (en) | 1994-05-02 |
Family
ID=13312274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6631587A Expired - Lifetime JPH0633785B2 (en) | 1987-03-12 | 1987-03-20 | Compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633785B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2706516B2 (en) * | 1989-05-31 | 1998-01-28 | 松下電器産業株式会社 | Compressor |
| JP4965379B2 (en) * | 2007-08-08 | 2012-07-04 | サンデン株式会社 | Scroll type fluid machinery |
| JP6766666B2 (en) | 2017-01-27 | 2020-10-14 | 株式会社豊田自動織機 | Electric compressor |
-
1987
- 1987-03-20 JP JP6631587A patent/JPH0633785B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63235689A (en) | 1988-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |