JPS6340276B2 - - Google Patents
Info
- Publication number
- JPS6340276B2 JPS6340276B2 JP18763981A JP18763981A JPS6340276B2 JP S6340276 B2 JPS6340276 B2 JP S6340276B2 JP 18763981 A JP18763981 A JP 18763981A JP 18763981 A JP18763981 A JP 18763981A JP S6340276 B2 JPS6340276 B2 JP S6340276B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- cam
- curve
- cylinder
- compression
- 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
Links
- 238000007906 compression Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/047—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being pin-and-slot mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明は、圧縮機のピストンをカムによに作動
させる電動圧縮機に関し、前記カムの適正な作動
曲線設定により、圧縮機の負荷変動を押え、高効
率化をはかることを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric compressor in which the piston of the compressor is actuated by a cam, and by setting an appropriate operating curve of the cam, load fluctuations of the compressor are suppressed and high efficiency is achieved. The purpose is to
従来の圧縮機は往復動式の場合、ピストンの運
動が正弦波運動に限定されているため、圧縮負荷
の均等化という点で制約を受けるものであつた。 In the case of a conventional compressor of the reciprocating type, the motion of the piston is limited to a sine wave motion, and therefore there are restrictions in terms of equalizing the compression load.
本発明は、ピストンをカムにて往復動させ、カ
ムの圧縮工程における変位曲線を改善することに
より、上記従来の制約を解消するものである。 The present invention eliminates the above-mentioned conventional limitations by reciprocating the piston with a cam and improving the displacement curve of the cam during the compression process.
図において、１はケーシング、２はケーシング
１に圧入されたモータステータである。３はベア
リングメタルで、モーターロータ２ａに圧入した
カム軸４が保持されている。５はカム軸４に形成
されたカム面である。この場合カム面５は圧縮行
程における変位量が、正弦波曲線に比して前半で
大きく後半が小さくなるよう設定されている。６
はベアリングメタル３に固定され、カム軸４の軸
線と平行な軸線を備えたシリンダで、この内には
ピストン７が摺動自在に配置されている。ピスト
ン７の一端には先端（下端）にローラ８を設けた
ローラピン９を備えており、ローラ８はカム面５
と係合している。又、ローラピン９の他端（上
端）には一方をシリンダ６の一部に設けたガイド
１０内に延出している。１１はバルブプレート、
１２はシリンダヘツドである。１３はケーシング
１の端部に設けた吸入管、１４は吐出管、１５は
吐出チヤンバーである。１６はケーシング１の底
部に貯留したオイル、１７はカム軸４に固着した
オイルフアン、１８はオイルバツフルで、吐出チ
ヤンバー１５に固定されている。 In the figure, 1 is a casing, and 2 is a motor stator press-fitted into the casing 1. A bearing metal 3 holds the camshaft 4 press-fitted into the motor rotor 2a. 5 is a cam surface formed on the camshaft 4. In this case, the cam surface 5 is set so that the amount of displacement during the compression stroke is larger in the first half and smaller in the second half compared to the sinusoidal curve. 6
is a cylinder fixed to the bearing metal 3 and having an axis parallel to the axis of the camshaft 4, and a piston 7 is slidably disposed within the cylinder. One end of the piston 7 is equipped with a roller pin 9 having a roller 8 at its tip (lower end).
is engaged with. Further, one end of the roller pin 9 (upper end) extends into a guide 10 provided in a part of the cylinder 6. 11 is the valve plate,
12 is a cylinder head. 13 is a suction pipe provided at the end of the casing 1, 14 is a discharge pipe, and 15 is a discharge chamber. 16 is oil stored at the bottom of the casing 1; 17 is an oil fan fixed to the camshaft 4; and 18 is an oil baffle, which is fixed to the discharge chamber 15.
カム面５のカム曲線５ａは第２図の展開図に示
すように、点線にて示す正弦波曲線Ｓに対し、実
線で示すようにピストン７の下死点から上死点に
いたる中間の回転角度90゜における変位量は、正
弦曲線より大きく、かつ回転角度0゜〜90゜に至る
間のその変化率は正弦曲線のそれよりも大きい。
逆に回転角度90゜〜180゜に至る間においては、そ
の変化率は正弦曲線のそれより小さく設定してあ
る。 As shown in the developed view of FIG. 2, the cam curve 5a of the cam surface 5 is an intermediate rotation from the bottom dead center of the piston 7 to the top dead center, as shown by the solid line, with respect to the sine wave curve S shown by the dotted line. The amount of displacement at an angle of 90° is larger than that of a sine curve, and its rate of change during a rotation angle of 0° to 90° is larger than that of a sine curve.
On the contrary, the rate of change is set smaller than that of the sinusoidal curve during the rotation angle of 90° to 180°.
また回転角度180゜〜360゜に至る間においては正
弦曲線と一致させている。 Furthermore, the rotation angle between 180° and 360° is made to coincide with a sine curve.
上記構成において、モータステータ２への通電
によりカム面５が回転すると、これと係合したロ
ーラ８およびローラピン９により、ピストン７が
カム面５のカム曲線５ａにしたがつてシリンダ６
内を往復摺動する。又同時にオイルフアン１７も
回転し、オイルバツフル１８とともにケーシング
１内の嵌合摺動部へオイル１６を供給する。この
間ピストン７の作動によりケーシング１外より吸
入管１３を介して吸入した気体は、シリンダ６内
へ流入して、圧縮され、吐出管１４よりふたたび
ケーシング１外へと吐気される。このような圧縮
工程において、カム面５に形成されたカム曲線５
ａの圧縮行程における変位量を、正弦波曲線の場
合に比して回転回度における前半を大きく又後半
を小さく形成することにより、比較的負荷の軽い
前半部分においては、早目にピストン７を移動さ
せ、また負荷の重くなる後半部分においてはピス
トン７を徐々に移動させることにより、圧縮工程
中の負荷のバランスをとり、性能の高効率化が得
られる。 In the above configuration, when the cam surface 5 rotates due to energization of the motor stator 2, the piston 7 follows the cam curve 5a of the cam surface 5 and the cylinder 6 due to the roller 8 and roller pin 9 engaged with the cam surface 5.
It slides back and forth inside. At the same time, the oil fan 17 also rotates, and together with the oil baffle 18, oil 16 is supplied to the fitting sliding portion inside the casing 1. During this time, gas sucked from outside the casing 1 through the suction pipe 13 by the operation of the piston 7 flows into the cylinder 6, is compressed, and is discharged out of the casing 1 from the discharge pipe 14 again. In such a compression process, the cam curve 5 formed on the cam surface 5
By making the displacement amount in the compression stroke of a larger in the first half and smaller in the second half of the rotational speed than in the case of a sine wave curve, the piston 7 can be moved earlier in the first half where the load is relatively light. By moving the piston 7 and gradually moving the piston 7 in the latter half of the period where the load is heavy, the load during the compression process can be balanced and highly efficient performance can be achieved.
以上の説明から明らかなように本発明の電動圧
縮機は、ピストン作動用カムの圧縮行程における
変位割合を、従来の正弦波曲線の場合に比して、
前半を大とし後半が小となるようにしたため、圧
縮機の圧縮工程中における負荷が滑らかになり、
従来に比して圧縮中のトルク変動を減小し、電動
機の効率低下を防止できるものである。 As is clear from the above description, the electric compressor of the present invention has a displacement ratio of the piston actuating cam in the compression stroke that is smaller than that of the conventional sine wave curve.
Because the first half is large and the second half is small, the load during the compression process of the compressor becomes smoother.
This reduces torque fluctuations during compression compared to the conventional technology, and prevents a decrease in the efficiency of the electric motor.
第１図は本発明の電動圧縮機の一実施例を示す
縦断面図、第２図は同カム面の展開図である。
２……モータステータ、２ａ……モータロー
タ、４……カム、５ａ……カム曲線、６……シリ
ンダ、７……ピストン。
FIG. 1 is a longitudinal sectional view showing an embodiment of the electric compressor of the present invention, and FIG. 2 is a developed view of the cam surface. 2...Motor stator, 2a...Motor rotor, 4...Cam, 5a...Cam curve, 6...Cylinder, 7...Piston.
Claims (1)
圧縮要素を駆動するモータステータ、モータロー
タ等の電動要素を備え、前記ピストンを往復作動
するカムの圧縮行程における変位割合を、正弦波
曲線に比して前半が大で後半が小となるよう形成
した電動圧縮機。1 Comprising a compression element such as a piston and a cylinder, and an electric element such as a motor stator and a motor rotor that drive the compression element, the displacement ratio in the compression stroke of a cam that reciprocates the piston is determined such that the first half is An electric compressor designed so that the second half is large and the second half is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18763981A JPS5888474A (en) | 1981-11-20 | 1981-11-20 | Motor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18763981A JPS5888474A (en) | 1981-11-20 | 1981-11-20 | Motor compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5888474A JPS5888474A (en) | 1983-05-26 |
| JPS6340276B2 true JPS6340276B2 (en) | 1988-08-10 |
Family
ID=16209629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18763981A Granted JPS5888474A (en) | 1981-11-20 | 1981-11-20 | Motor compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5888474A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2922999A1 (en) | 2007-10-30 | 2009-05-01 | Cooltech Applic Soc Par Action | Heat generator for use in e.g. domestic application, has unit synchronized with field variation to move coolant in directions such that fraction of coolant circulates in direction of cold exchange chamber across elements at cooling cycle |
-
1981
- 1981-11-20 JP JP18763981A patent/JPS5888474A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5888474A (en) | 1983-05-26 |
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