WO2015125261A1 - スクロール式流体機械 - Google Patents
スクロール式流体機械 Download PDFInfo
- Publication number
- WO2015125261A1 WO2015125261A1 PCT/JP2014/054101 JP2014054101W WO2015125261A1 WO 2015125261 A1 WO2015125261 A1 WO 2015125261A1 JP 2014054101 W JP2014054101 W JP 2014054101W WO 2015125261 A1 WO2015125261 A1 WO 2015125261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- scroll
- back plate
- orbiting scroll
- drive shaft
- prevention mechanism
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/063—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with only rolling movement
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- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/00—Components
- F04C2240/60—Shafts
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/805—Fastening means, e.g. bolts
Definitions
- the present invention relates to a scroll type fluid machine.
- Patent Document 1 “at least the back surface of the auxiliary crank boss part and the central part of the rotating shaft boss part corresponding part are in contact with the cooling fin top part on the orbiting scroll side and integrated with the orbiting scroll.
- a cooling structure in a scroll fluid machine is disclosed.
- an object of the present invention is to provide a scroll fluid machine that realizes improved reliability and longer life of an anti-rotation mechanism by preventing direct heat transfer from the orbiting scroll to the anti-rotation mechanism.
- the present invention drives a fixed scroll, a orbiting scroll provided to face the fixed scroll and orbiting, a casing provided outside the orbiting scroll, and the orbiting scroll.
- a rotation shaft that is provided between the casing and the back plate, and that prevents rotation of the orbiting scroll.
- the back plate includes a rotation prevention mechanism side back plate provided integrally with the rotation prevention mechanism, and a drive shaft side back plate provided integrally with the boss portion, and the rotation prevention mechanism side
- a scroll fluid machine is provided in which a back plate is not in contact with the orbiting scroll.
- FIG. 1 shows a cross-sectional view of a scroll compressor in the present embodiment.
- the casing 1 of the scroll type air compressor is formed in a cylindrical shape, is provided outside the orbiting scroll 8, and supports the drive shaft 15 in a rotatable manner.
- the fixed scroll 2 provided on the opening side of the casing 1 has an end plate 3 formed in a substantially disc shape with an axis OO as a center, and a shaft on a tooth bottom surface serving as a surface of the end plate 3.
- the cooling fins 6 are generally configured.
- the wrap portion 4 has a spiral shape, for example, three turns before and after three turns from the inner diameter side to the outer diameter side when the outermost diameter end is the winding start end and the outermost diameter end is the winding end end, for example. It is wound.
- the tooth tip surface of the wrap portion 4 is separated from the tooth bottom surface of the end plate 9 of the orbiting scroll 8 as a counterpart by a certain axial dimension.
- a seal groove 4A is provided on the tooth tip surface of the wrap portion 4 along the winding direction of the wrap portion 4, and the seal groove 4A serves as a seal member that is in sliding contact with the end plate 9 of the orbiting scroll 8.
- a tip seal 7 is provided.
- the outer peripheral wall portion 5 is formed in a substantially circular shape and opens at the end face of the fixed scroll 2. And the outer peripheral wall part 5 is arrange
- the orbiting scroll 8 provided in the casing 1 so as to be orbitable is erected on a substantially disc-shaped end plate 9 disposed to face the end plate 3 of the fixed scroll 2 and a tooth bottom surface that becomes the surface of the end plate 9.
- the spiral wrap portion 10 and a plurality of cooling fins 11 projecting from the back surface of the end plate 9 are generally configured.
- a rear plate 12 connected to the drive shaft 15 is provided on the front end side of the cooling fin 11.
- the wrap portion 10 has, for example, a spiral shape of about 3 turns, similar to the wrap portion 4 of the fixed scroll 2.
- the tooth tip surface of the wrap portion 10 is separated from the tooth bottom surface of the end plate 3 of the fixed scroll 2 which is the counterpart by a certain axial dimension.
- a seal groove 10A is provided on the tooth tip surface of the wrap part 10 along the winding direction of the wrap part 10, and the seal groove 10A serves as a seal member that is in sliding contact with the end plate 3 of the fixed scroll 2.
- a tip seal 13 is provided.
- a cylindrical boss portion 14 connected to the crank portion 15A of the drive shaft 15 via the swivel bearing 14a and the bearing housing 14b is integrally formed on the center side of the back plate 12.
- a pulley 15B is provided on one end side of the drive shaft 15 outside the casing 1, and this pulley 15B is, for example, a belt (not shown) on the output side of an electric motor as a drive source. And so on.
- the drive shaft 15 is rotationally driven by an electric motor or the like to cause the orbiting scroll 8 to orbit with respect to the fixed scroll 2.
- a cooling fan 16 is attached to the pulley 15B using bolts or the like, and the cooling fan 16 generates cooling air in the fan casing 17.
- the cooling fan 16 blows cooling air along the ducts in the fan casing 17 to the inside of the casing 1 and the back side of the scrolls 2, 8 to cool the casing 1, the fixed scroll 2, the orbiting scroll 8, etc. To do.
- auxiliary cranks 18 (only one is shown) as an anti-rotation mechanism for preventing the orbiting scroll 8 from rotating.
- the auxiliary crank 18 is disposed via auxiliary crank bearings in auxiliary crank boss portions 18b formed on the casing 1 and the back plate 12, respectively.
- a plurality of compression chambers 19 provided between the fixed scroll 2 and the orbiting scroll 8 are located between the wrap portions 4 and 10 and are sequentially formed from the radially outer side to the radially inner side. It is kept airtight.
- the compression chambers 19 are continuously reduced between the wrap portions 4 and 10 while moving from the radially outer side toward the radially inner side when the orbiting scroll 8 orbits in the forward direction.
- the suction port 20 provided on the outer diameter side of the fixed scroll 2 opens from the outer diameter side of the end plate 3 to the outer peripheral wall portion 5 and communicates with a compression chamber 19A located on the radially outer side. Further, the suction port 20 is located outside the end plate 3 of the fixed scroll 2 in the radial direction of the wrap portion 10 of the orbiting scroll 8 and opens in a range (non-sliding region) where the tip seal 13 does not slide. . And the suction inlet 20 sucks air in the compression chamber 19A located in the radial direction outer side through the suction filter 21, for example.
- the suction port 20 may be configured to suck in pressurized air. In this case, it is good also as a structure which removes the suction filter 21 and connects the suction inlet 20 to piping to which pressurized air is supplied.
- the flange 24 located radially outside the lap portion 4 of the fixed scroll 2 fixes the fixed scroll 2 to the casing 1 with the flange 1a of the casing 1.
- the alignment between the fixed scroll 2 and the casing 1 is performed by inserting a positioning member through the alignment hole 37.
- the face seal groove 25 provided on the end face of the fixed scroll 2 facing the end plate 9 of the orbiting scroll 8 is located on the outer side in the radial direction of the outer peripheral wall 5 and is formed in an annular shape surrounding the outer peripheral wall 5. .
- An annular face seal 26 is attached in the face seal groove 25. The face seal 26 hermetically seals between the end face of the fixed scroll 2 and the end plate 9 of the orbiting scroll 8, and prevents air sucked into the outer peripheral wall portion 5 from leaking therebetween.
- the scroll type air compressor according to this embodiment has the above-described configuration. Next, the operation of the scroll type air compressor will be described.
- the orbiting scroll 8 is centered on the axis OO of the drive shaft 15 while being prevented from rotating by the rotation prevention mechanism.
- a drive source such as an electric motor
- the orbiting scroll 8 is centered on the axis OO of the drive shaft 15 while being prevented from rotating by the rotation prevention mechanism.
- the compression chamber 19 defined between the lap portion 4 of the fixed scroll 2 and the lap portion 10 of the orbiting scroll 8 is continuously reduced.
- the air sucked from the suction port 20 of the fixed scroll 2 can be discharged toward the external tank (not shown) as compressed air from the discharge port 22 of the fixed scroll 2 while being sequentially compressed in each compression chamber 19. it can.
- Cooling air generated by the cooling fan 16 circulates inside the casing 1 and the back side of the scrolls 2 and 8 along a duct and the like in the fan casing 17 to cool the casing 1, the fixed scroll 2, the orbiting scroll 8, and the like. To do.
- FIG. 2 shows the back of the orbiting scroll 8 in this embodiment.
- the orbiting scroll 8 has cooling fins 11 formed on the back side of the end plate 9.
- a plurality of fastening portions 38 that are fastened to the back plate 12 are provided on the back of the orbiting scroll 8.
- the cooling fin 11 and the fastening portion 38 may be integrally formed.
- the orbiting scroll 8 may be provided with cooling fins. Thereby, the temperature rise of the back plate can be further suppressed.
- FIG. 3 shows the back plate 12 that is fastened to the orbiting scroll 8.
- the back plate 12 is provided with a drive shaft side back plate 12 a formed integrally with the boss portion 14 connected to the drive shaft 15 and an auxiliary crank bearing housing 18 b that houses a plurality of auxiliary cranks 18. It is comprised by the mechanism side back surface plate 12b.
- a hollow portion 39 is provided between the drive shaft side back plate 12a and the rotation prevention mechanism side back plate 12b, and the drive shaft side back plate 12a and the rotation prevention mechanism side back plate 12b are not connected in the radial direction.
- the rotation prevention mechanism side back plate 12b is connected to the drive shaft side back plate 12a in the circumferential direction via a connecting portion 13.
- the hollow portion 39 can absorb the thermal deformation. Therefore, the thermal expansion of the drive shaft side back plate 12a is not transmitted to the rotation prevention mechanism side back plate 12b, and distortion of the auxiliary crank bearing housing 18b can be suppressed.
- the drive shaft side back plate 12a may be formed of a material having lower rigidity than the rotation prevention mechanism side back plate 12b.
- the back plate 12 can absorb more deformation due to thermal expansion by the drive shaft side back plate 12a, and the distortion of the auxiliary crank bearing housing 18b is further effectively suppressed, and the reliability and life of the auxiliary crank 18 are further improved. Can be made.
- FIG. 4 shows the orbiting scroll 8 with the back plate 12 fastened.
- the cooling fin 11 formed on the back side of the orbiting scroll 8 is not in contact with the rotation prevention mechanism side back plate 12b in a state where the orbiting scroll 8 and the back plate 12 are fastened by the fastening portion 38. It is configured.
- the dimension of the cooling fin 11 in the axial direction (longitudinal direction of the drive shaft 15) is formed larger than the position facing the rotation prevention mechanism side back plate 12b, and cooling is performed.
- the fin 11 is configured to contact the drive shaft side rear plate 12a.
- the cooling fin 11 is configured to come into contact with the drive shaft side rear plate 12a, the heat of the orbiting scroll 8 can be effectively released. Even if comprised in this way, since the drive shaft side back plate 12a and the rotation prevention mechanism side back plate 12b are not connected in the radial direction, heat transfer to the rotation prevention mechanism side back plate 12b does not increase. In addition, in the connection part 13, the heat transfer to the autorotation prevention mechanism side back plate 12b can further be suppressed by making it non-contact with the cooling fin 11. FIG.
- the present embodiment it is possible to prevent the rotation of the orbiting scroll 8 while effectively releasing the heat of the rotation preventing mechanism side rear plate 12b and the auxiliary crank 18. Further, the temperature of the auxiliary crank 18 can be reduced without adding parts, the cost can be reduced, and the number of machining parts can be reduced, so that the number of machining steps (machining time) can be reduced.
- the present invention is applied to a scroll type air compressor as a scroll type fluid machine as a scroll type fluid machine has been described as an example.
- the present invention is not limited to this, and the present invention is not limited to this.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
1a フランジ
2 固定スクロール
3,9 鏡板
4,10 ラップ部
5 外周壁部
6,11 冷却フィン
7,13 チップシール
8 旋回スクロール
12 背面プレート
12a 駆動軸側背面プレート
12b 自転防止機構側背面プレート
13 接続部
14 ボス部
14a 旋回軸受
14b 軸受ハウジング
15 駆動軸
16 冷却ファン
17 ファンケーシング
18 補助クランク
18a 補助クランク軸受
18b 補助クランクボス部
19 圧縮室
20 吸込口
21 吸込フィルタ
22 吐出口
24 フランジ
25 フェイスシール溝
26 フェイスシール
37 位置決め穴
38 締結部
39 中空部
Claims (12)
- 固定スクロールと、
前記固定スクロールに対向して設けられ、旋回運動する旋回スクロールと、
前記旋回スクロールの外側に設けられたケーシングと、
前記旋回スクロールを駆動する駆動軸と、
前記旋回スクロールに締結部にて締結され、前記駆動軸にボス部にて接続される背面プレートと、
前記ケーシングと前記背面プレートとの間に設けられ、前記旋回スクロールの自転を防止する自転防止機構とを備え、
前記背面プレートは前記自転防止機構と一体に設けられた自転防止機構側背面プレートと前記ボス部と一体に設けられた駆動軸側背面プレートとを有し、
前記自転防止機構側背面プレートは前記旋回スクロールと非接触であることを特徴とするスクロール式流体機械。 - 前記駆動軸側背面プレートは前記旋回スクロールに形成された冷却フィンと接触することを特徴とする請求項1に記載のスクロール式流体機械。
- 前記駆動軸側背面プレートを前記自転防止機構側背面プレートよりも剛性の低い材料で形成することを特徴とする請求項1に記載のスクロール式流体機械。
- 前記旋回スクロールと前記背面プレートとを締結する締結部を設け、前記締結部と前記冷却フィンを一体に形成することを特徴とする請求項2に記載のスクロール式流体機械。
- 前記駆動軸側背面プレートと前記自転防止機構側背面プレートとの間に中空部を有することを特徴とする請求項1に記載のスクロール式流体機械。
- 前記背面プレートに冷却フィンを設けることを特徴とする請求項1に記載のスクロール式流体機械。
- 固定スクロールと、
前記固定スクロールに対向して設けられ、旋回運動する旋回スクロールと、
前記旋回スクロールの外側に設けられたケーシングと、
前記旋回スクロールを駆動する駆動軸と、
前記旋回スクロールに締結され、前記駆動軸に接続される背面プレートと、
前記ケーシングと前記背面プレートとの間に設けられ、前記旋回スクロールの自転を防止する自転防止機構とを備え、
前記背面プレートは前記自転防止機構と一体に設けられた自転防止機構側背面プレートと前記駆動軸に接続される駆動軸側背面プレートとを有し、
前記自転防止機構側背面プレートと前記旋回スクロールに形成された冷却フィンとの間に冷却風通路を設けることを特徴とするスクロール式流体機械。 - 前記駆動軸側背面プレートは前記旋回スクロールに形成された冷却フィンと接触することを特徴とする請求項7に記載のスクロール式流体機械。
- 前記駆動軸側背面プレートを前記自転防止機構側背面プレートよりも剛性の低い材料で形成することを特徴とする請求項7に記載のスクロール式流体機械。
- 前記旋回スクロールと前記背面プレートとを締結する締結部を設け、前記締結部と前記冷却フィンを一体に形成することを特徴とする請求項8に記載のスクロール式流体機械。
- 前記駆動軸側背面プレートと前記自転防止機構側背面プレートとの間に中空部を有することを特徴とする請求項7に記載のスクロール式流体機械。
- 前記背面プレートに冷却フィンを設けることを特徴とする請求項7に記載のスクロール式流体機械。
Priority Applications (5)
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KR1020167012627A KR101886668B1 (ko) | 2014-02-21 | 2014-02-21 | 스크롤식 유체 기계 |
EP14883157.1A EP3109475B1 (en) | 2014-02-21 | 2014-02-21 | Scroll type fluid machine |
CN201480071454.6A CN105849411B (zh) | 2014-02-21 | 2014-02-21 | 涡旋式流体机械 |
JP2016503841A JP6205478B2 (ja) | 2014-02-21 | 2014-02-21 | スクロール式流体機械 |
PCT/JP2014/054101 WO2015125261A1 (ja) | 2014-02-21 | 2014-02-21 | スクロール式流体機械 |
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CN206054311U (zh) * | 2016-04-25 | 2017-03-29 | 徐道敏 | 一种涡旋压缩机的涡盘散热结构 |
CN113217376A (zh) * | 2021-05-28 | 2021-08-06 | 浙江蓝德华燕动力有限公司 | 一种高抽速无油涡旋真空泵 |
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- 2014-02-21 KR KR1020167012627A patent/KR101886668B1/ko active IP Right Grant
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JPH09144673A (ja) * | 1995-11-20 | 1997-06-03 | Tokico Ltd | スクロール式流体機械 |
JP2002257066A (ja) * | 2001-03-06 | 2002-09-11 | Anest Iwata Corp | スクロール流体機械 |
JP2003065271A (ja) * | 2001-08-30 | 2003-03-05 | Hokuetsu Kogyo Co Ltd | オイルフリー・スクロール流体機械 |
JP2003065267A (ja) * | 2001-08-30 | 2003-03-05 | Hokuetsu Kogyo Co Ltd | オイルフリー・スクロール流体機械 |
JP2010084592A (ja) * | 2008-09-30 | 2010-04-15 | Hitachi Ltd | スクロール式流体機械 |
JP2011252448A (ja) * | 2010-06-02 | 2011-12-15 | Hitachi Industrial Equipment Systems Co Ltd | スクロール式流体機械 |
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KR101886668B1 (ko) | 2018-08-09 |
JP6205478B2 (ja) | 2017-09-27 |
JPWO2015125261A1 (ja) | 2017-03-30 |
CN105849411A (zh) | 2016-08-10 |
EP3109475A1 (en) | 2016-12-28 |
EP3109475B1 (en) | 2019-08-07 |
KR20160070135A (ko) | 2016-06-17 |
CN105849411B (zh) | 2019-03-08 |
EP3109475A4 (en) | 2018-01-24 |
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