JPH0510279A - Two-cylinder rotary compressor - Google Patents
Two-cylinder rotary compressorInfo
- Publication number
- JPH0510279A JPH0510279A JP16542091A JP16542091A JPH0510279A JP H0510279 A JPH0510279 A JP H0510279A JP 16542091 A JP16542091 A JP 16542091A JP 16542091 A JP16542091 A JP 16542091A JP H0510279 A JPH0510279 A JP H0510279A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- shaft
- cylinder
- eccentric
- end plate
- 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.)
- Granted
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、冷凍装置または、空
気調和装置において、冷媒ガスの圧縮を行う多気筒回転
式圧縮機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-cylinder rotary compressor for compressing refrigerant gas in a refrigeration system or an air conditioner.
【0002】[0002]
【従来の技術】特公昭63−38691号公報に示され
たものに準ずる既に提案されているこの種の2気筒回転
式圧縮機は、図3及び図4に示されるように構成されて
いる。2. Description of the Related Art A two-cylinder rotary compressor of this type, which has already been proposed in accordance with the one disclosed in Japanese Examined Patent Publication No. 63-38691, is constructed as shown in FIGS.
【0003】即ち、図3、図4において1は、密閉容器
であり、この密閉容器1内に電動要素2が収納されてい
る。That is, in FIG. 3 and FIG. 4, reference numeral 1 denotes an airtight container in which an electric element 2 is housed.
【0004】電動要素2の鉛直方向の駆動軸2aで圧縮
要素3が駆動されるようになっている。この圧縮要素3
の仕切り板4の上下両側にシリンダ5,6が配設されて
いる。The compression element 3 is driven by a vertical drive shaft 2a of the electric element 2. This compression element 3
Cylinders 5 and 6 are arranged on both upper and lower sides of the partition plate 4.
【0005】また、シリンダ5内には、クランク軸偏芯
部7が配設されており、同様にシリンダ6内にもクラン
ク軸偏芯部8が収納されている。A crankshaft eccentric portion 7 is arranged in the cylinder 5, and a crankshaft eccentric portion 8 is also housed in the cylinder 6.
【0006】両クランク軸偏芯部7,8は駆動軸2aと
一体的に構成されており、このクランク軸偏芯部7,8
のそれぞれにローリングピストン9,10が回転自在に
装着されている。The crankshaft eccentric portions 7 and 8 are integrally formed with the drive shaft 2a.
Rolling pistons 9 and 10 are rotatably mounted on each of the above.
【0007】このローリングピストン9,10は、それ
ぞれシリンダ5,6内に収納されている。The rolling pistons 9 and 10 are housed in cylinders 5 and 6, respectively.
【0008】なお、このシリンダ5,6内には、それぞ
れ図示されていないが、ローリングピストン9,10に
当接してベーンが設けられている。各シリンダ5,6内
には、それぞれガスに吸入通路11,12が設けられて
いる。Although not shown in the drawings, vanes are provided in the cylinders 5 and 6 in contact with the rolling pistons 9 and 10, respectively. Gas suction passages 11 and 12 are provided in the cylinders 5 and 6, respectively.
【0009】これらの、吸入通路11,12には、互い
に独立した吸入管13,14が、接続されている。この
吸入通路11,12には、それぞれ吸入管13,14が
連結されている。Intake pipes 13 and 14 independent from each other are connected to the suction passages 11 and 12, respectively. Suction pipes 13 and 14 are connected to the suction passages 11 and 12, respectively.
【0010】この吸入管13,14は、吸入通路11,
12を通して吸入室18,19に連通している。さら
に、仕切り板4の中央部には、中央孔17が、配設され
ておりこの中央孔17の孔径D0は、独立時上記両クラ
ンク軸偏芯部7,8の外径d0よりも僅かに大きく形成
されておりこの中央孔17は、組立時上記両クランク軸
偏芯部7,8をいずれの方向からも挿通して組立られる
ようになっている。The suction pipes 13, 14 are provided with suction passages 11,
12 communicates with suction chambers 18 and 19. Further, a central hole 17 is arranged in the central portion of the partition plate 4, and the diameter D0 of the central hole 17 is slightly smaller than the outer diameter d0 of the crankshaft eccentric portions 7 and 8 when independent. The central hole 17 is formed in a large size so that the crankshaft eccentric portions 7 and 8 can be inserted from any direction during assembly.
【0011】このように構成された2気筒回転式圧縮機
において、電動要素2が付勢され、その駆動軸2aが回
転すると、クランク軸偏芯部7,8が、シリンダ5,6
内において偏芯回転し、ローリングピストン9,10が
図示しないベーンに当接しながら回転移動し、それぞれ
半回転ずれた周期で両シリンダ5,6において冷媒ガス
の吸入、圧縮が、繰かえされる。この両シリンダ5,6
には、それぞれの吸入管13,14吸入通路11,12
を通って冷媒ガスが吸入される。In the two-cylinder rotary compressor constructed as described above, when the electric element 2 is energized and the drive shaft 2a thereof is rotated, the crankshaft eccentric parts 7, 8 cause the cylinders 5, 6 to move.
The cylinders eccentrically rotate inside, and the rolling pistons 9 and 10 rotate while abutting on vanes (not shown), and suction and compression of the refrigerant gas are repeated in both cylinders 5 and 6 in a cycle shifted by half a rotation. Both cylinders 5, 6
The suction pipes 13 and 14 of the suction passages 11 and 12 respectively.
Refrigerant gas is drawn in through.
【0012】[0012]
【発明が解決しようとする課題】しかしながら、上述し
た密閉形回転圧縮機は、各クランク軸偏芯部7,8を同
径に形成すると共に、180゜対向となっている為偏芯
部径d0と上端板側、下端板側の軸径d1で構成される
(d0−d1)/2よりも偏芯量を大きくすることがで
きず、従って冷凍能力が小さくなる不具合いがあった。However, in the hermetic rotary compressor described above, the crankshaft eccentric portions 7 and 8 are formed to have the same diameter, and the eccentric portion diameter d0 is provided because they are opposed by 180 °. The eccentricity cannot be made larger than (d0-d1) / 2 constituted by the shaft diameters d1 on the upper end plate side and the lower end plate side, so that there is a problem that the refrigerating capacity decreases.
【0013】また、前記仕切り板4の中央孔17の径を
クランク軸偏芯部7,8の径よりも小さくすれば、上記
不具合いを解消できるが逆に仕切り板4を分割したりし
ないと組み立てることができなくなり製造性が、大幅に
低下する問題があった。If the diameter of the central hole 17 of the partition plate 4 is made smaller than the diameter of the crankshaft eccentric portions 7 and 8, the above problems can be solved, but on the contrary, the partition plate 4 must be divided. There has been a problem that it becomes impossible to assemble and the productivity is greatly reduced.
【0014】本発明は、上記事情に基ずいてなされたも
ので、製造性を低下することなしにクランク軸部の偏芯
量を大きくして、冷凍能力を大きくできる密閉形回転式
圧縮機を提供することを目的としている。The present invention has been made based on the above circumstances, and provides a hermetic rotary compressor capable of increasing the refrigerating capacity by increasing the eccentricity of the crankshaft portion without lowering the manufacturability. It is intended to be provided.
【0015】[0015]
【課題を解決するための手段】本発明は、密閉容器内
に、電動機を有する駆動要素によって駆動される2つの
圧縮機要素を仕切り板を介して軸方向に配設し、前記各
圧縮機要素にシリンダと前記駆動要素によって回転し、
かつ180゜対向の偏芯部を有する軸と、この偏芯部に
回転自在に設けられ、かつシリンダ内を前記軸の偏芯部
とともに偏芯回転するローリングピストンと、前記シリ
ンダに摺動自在に挿入され、圧縮室と吸入室を仕切るベ
ーンと、前記ローリングピストンにベーンを押接する弾
性体と、圧縮される冷媒を導入する吸入孔と、圧縮した
冷媒を吐出する吐出孔と、この吐出孔を開閉する吐出弁
装置をそれぞれ設け、さらに、前記各圧縮機要素の軸方
向両端に、前記軸の軸受け部を有する端板と、この両端
板と圧縮機要素を連結する締結部を設けて2気筒形ロー
リングピストン式回転圧縮機を構成し、前記軸の2つの
偏芯部を異なる直径で形成し、かつ、前記軸の上端板側
の外径と下端板側の外径を異なる径とし、前記仕切り板
に配設される中央孔を小径側の前記偏芯部のみを挿通し
得る大きさに形成したものである。SUMMARY OF THE INVENTION According to the present invention, two compressor elements driven by a drive element having an electric motor are axially arranged in a closed container via a partition plate, and each of the compressor elements is provided. By the cylinder and the drive element,
And a shaft having an eccentric portion opposed to each other by 180 °, a rolling piston rotatably provided on the eccentric portion and rotating eccentrically in the cylinder together with the eccentric portion of the shaft, and slidably on the cylinder. A vane that is inserted to separate the compression chamber and the suction chamber, an elastic body that presses the vane against the rolling piston, a suction hole that introduces a refrigerant to be compressed, a discharge hole that discharges the compressed refrigerant, and a discharge hole Discharge valve devices for opening and closing are provided respectively, and further, end plates having bearing portions for the shafts and fastening portions for connecting the end plates and the compressor element are provided at both axial ends of each compressor element. Form a rolling piston type rotary compressor, the two eccentric portions of the shaft are formed with different diameters, and the outer diameter of the upper end plate side and the outer diameter of the lower end plate side of the shaft are different, Center placed on the partition plate The is obtained by forming a size capable of inserting only the eccentric portions of the small diameter side.
【0016】[0016]
【作用】この構成により、軸の偏芯部の偏芯量を大きく
して冷凍能力を増大することができるようにし、仕切り
板は小径側の偏芯部を通して組立てることができるので
製造性が低下することもないようにしたものである。With this structure, the refrigerating capacity can be increased by increasing the eccentric amount of the eccentric part of the shaft, and the partition plate can be assembled through the eccentric part on the small diameter side, so the manufacturability is reduced. It is something that is not done.
【0017】[0017]
【実施例】以下、本発明を図示の一実施例について説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment.
【0018】なお、本発明の2気筒回転式圧縮機の全体
構成は、上述した従来例と同一であるので、その説明を
省略し、主要部の構成のみを説明する。Since the overall structure of the two-cylinder rotary compressor of the present invention is the same as that of the conventional example described above, the description thereof will be omitted and only the structure of the main part will be described.
【0019】図2において、両シリンダ5,6の内周径
がDに形成された各シリンダー室18,19の位置する
上記回転軸2aには、異なる直径で形成される上端板側
の外径と下端板側の外径と180゜対向の偏芯方向、同
一偏芯量、異なる外径で形成される各クランク軸偏芯部
7,8が各ローリングピストン9,10を介して設けら
れている。In FIG. 2, the rotary shaft 2a in which the cylinder chambers 18 and 19 in which the inner peripheral diameters of both cylinders 5 and 6 are formed to be D are located are formed with different diameters on the upper end plate side. The crankshaft eccentric portions 7 and 8 formed by 180 ° eccentric direction opposite to the outer diameter of the lower end plate side, the same eccentric amount, and different outer diameters are provided through the rolling pistons 9 and 10, respectively. There is.
【0020】特に上記上端板側の外径d1は、下端板の
外径d2よりも大きく形成されている。In particular, the outer diameter d1 on the upper end plate side is formed larger than the outer diameter d2 of the lower end plate.
【0021】次に図3に示した従来のものと上記図1の
本発明の実施例のものとの各クランク軸偏芯部との関係
について説明する。Next, the relationship between the crankshaft eccentric parts of the conventional structure shown in FIG. 3 and the embodiment of the present invention shown in FIG. 1 will be described.
【0022】従来の各クランク軸偏芯部は、180゜対
向、かつ同一外径の為上ローリングピストンは上端板側
から、下ローリングピストンは下端板側からしか、挿入
できず、従って偏芯量は(d0−d1)/2よりも大き
くできずそのため冷凍能力は大きくできない不具合いが
あった。Since the conventional crankshaft eccentric parts are opposed to each other by 180 ° and have the same outer diameter, the upper rolling piston can be inserted only from the upper end plate side, and the lower rolling piston can be inserted only from the lower end plate side. Cannot be made larger than (d0-d1) / 2, so the refrigerating capacity cannot be made large.
【0023】一方、本発明の各クランク軸偏芯部は、1
80゜対向の偏芯方向、同一偏芯量、異なる外径として
かつ、上端板側の外径を下端板の外径より小さくするこ
とで、偏芯量を従来のものと比べ大きくすることができ
る。On the other hand, each crankshaft eccentric portion of the present invention has one
The eccentricity can be made larger than that of the conventional one by making the eccentric directions facing each other by 80 °, the same eccentricity amount, different outer diameters, and making the outer diameter of the upper end plate side smaller than the outer diameter of the lower end plate. it can.
【0024】従って、上記のことから明かなように本発
明は、シリンダ室の大きさが同一のもとで、各クランク
軸偏芯部を180゜対向の偏芯方向、同一偏芯量、異な
る外径とすることで偏芯量を大きくする事ができ冷凍能
力を増大することができる。また、言い変えれば同じ冷
凍能力を得るのにシリンダ室の容積を小さくでき小型軽
量化を図ることができる。Therefore, as is apparent from the above, according to the present invention, the crankshaft eccentric portions are 180 ° opposite to each other in the eccentric direction, the same eccentric amount, and different, under the same size of the cylinder chamber. By setting the outer diameter, the amount of eccentricity can be increased and the refrigerating capacity can be increased. In other words, in order to obtain the same refrigerating capacity, the volume of the cylinder chamber can be reduced and the size and weight can be reduced.
【0025】[0025]
【発明の効果】以上述べたように本発明によれば、密閉
容器内に、電動機を有する駆動要素によって駆動される
2つの圧縮機要素を仕切り板を介して軸方向に配設し、
前記各圧縮機要素にシリンダと前記駆動要素によって回
転し、かつ180゜対向の偏芯部を有する軸と、この偏
芯部に回転自在に設けられ、かつシリンダ内を前記軸の
偏芯部とともに偏芯回転するローリングピストンと、前
記シリンダに摺動自在に挿入され、圧縮室と吸入室を仕
切るベーンと、前記ローリングピストンにベーンを押接
する弾性体と、圧縮される冷媒を導入する吸入孔と、圧
縮した冷媒を吐出する吐出孔と、この吐出孔を開閉する
吐出弁装置をそれぞれ設け、さらに、前記各圧縮機要素
の軸方向両端に、前記軸の軸受け部を有する端板と、こ
の両端板と圧縮機要素を連結する締結部を設けて2気筒
形ローリングピストン式回転圧縮機を構成し、前記軸の
2つの偏芯部を異なる直径で形成し、かつ前記軸の上端
板側の外径と下端板側の外径を異なる径とし、前記仕切
り板に配設される中央孔を小径側の前記偏芯部のみを挿
入し得る大きさに形成したことにより、軸の偏芯部の偏
芯量を大きくして冷凍能力を増大することができる。As described above, according to the present invention, two compressor elements driven by a drive element having an electric motor are axially arranged in a closed container via a partition plate.
A shaft that is rotated by the cylinder and the drive element in each of the compressor elements and that has an eccentric portion that opposes by 180 °, and a shaft that is rotatably provided in the eccentric portion and that has the eccentric portion of the shaft in the cylinder. An eccentrically rotating rolling piston, a vane slidably inserted into the cylinder and separating the compression chamber and the suction chamber, an elastic body for pressing the vane against the rolling piston, and a suction hole for introducing a refrigerant to be compressed. A discharge hole for discharging the compressed refrigerant and a discharge valve device for opening and closing the discharge hole, and further, an end plate having bearing portions for the shaft at both axial ends of each compressor element, and both ends thereof. A two-cylinder rolling piston rotary compressor is provided by providing a fastening portion connecting the plate and the compressor element, two eccentric portions of the shaft are formed with different diameters, and the outer end of the shaft on the upper end plate side is formed. Diameter and bottom The eccentricity of the eccentric portion of the shaft is reduced by forming the central holes arranged in the partition plate to have a size that allows only the eccentric portion on the small diameter side to be inserted, while making the outer diameters of the sides different diameters. It can be increased to increase the refrigerating capacity.
【図1】本発明の一実施例における2気筒回転式圧縮機
の縦断面図FIG. 1 is a vertical sectional view of a two-cylinder rotary compressor according to an embodiment of the present invention.
【図2】同要部拡大断面図FIG. 2 is an enlarged cross-sectional view of the relevant part.
【図3】従来の2気筒回転式圧縮機の縦断面図FIG. 3 is a vertical sectional view of a conventional two-cylinder rotary compressor.
【図4】同要部拡大断面図FIG. 4 is an enlarged sectional view of the main part.
1 密閉容器 2 電動要素 2a 駆動軸 3 圧縮要素 4 仕切り板 5 シリンダ 6 シリンダ 7 クランク軸偏芯部 8 クランク軸偏芯部 9 ローリングピストン 10 ローリングピストン 11 吸入通路 12 吸入通路 13 吸入管 14 吸入管 17 中央孔 18 シリンダ室 19 シリンダ室 1 Airtight container 2 Electric element 2a Drive shaft 3 Compression element 4 Partition plate 5 Cylinder 6 Cylinder 7 Crankshaft eccentric part 8 Crankshaft eccentric part 9 Rolling piston 10 Rolling piston 11 Suction passage 12 Suction passage 13 Suction pipe 14 Suction pipe 17 Central hole 18 Cylinder chamber 19 Cylinder chamber
Claims (1)
よって駆動される2つの圧縮機要素を仕切り板を介して
軸方向に配設し、前記各圧縮機要素にシリンダと前記駆
動要素によって回転し、かつ180゜対向の偏芯部を有
する軸と、この偏芯部に回転自在に設けられ、かつシリ
ンダ内を前記軸の偏芯部とともに偏芯回転するローリン
グピストンと、前記シリンダに摺動自在に挿入され、圧
縮室と吸入室を仕切るベーンと、前記ローリングピスト
ンにベーンを押接する弾性体と、圧縮される冷媒を導入
する吸入孔と、圧縮した冷媒を吐出する吐出孔と、この
吐出孔を開閉する吐出弁装置をそれぞれ設け、さらに、
前記各圧縮機要素の軸方向両端に、前記軸の軸受け部を
有する端板と、この両端板と圧縮機要素を連結する締結
部を設けて2気筒形ローリングピストン式回転圧縮機を
構成し、前記軸の2つの偏芯部を異なる直径で形成し、
かつ、前記軸の上端板側の外径と下端板側の外径を異な
る径とし、前記仕切り板に配設される中央孔を小径側の
前記偏芯部のみを挿通し得る大きさに形成したことを特
徴とする2気筒回転式圧縮機。Claim: What is claimed is: 1. A compressor comprising a compressor and a compressor, the compressor being driven by a driving element having an electric motor, arranged axially in the sealed container through a partition plate. And a shaft having an eccentric portion that is rotated by the drive element and is opposed to 180 °, and a rolling piston that is rotatably provided on the eccentric portion and that eccentrically rotates in the cylinder together with the eccentric portion of the shaft. , A vane that is slidably inserted into the cylinder to partition the compression chamber and the suction chamber, an elastic body that presses the vane against the rolling piston, a suction hole that introduces a refrigerant to be compressed, and discharges the compressed refrigerant. A discharge hole and a discharge valve device for opening and closing the discharge hole are respectively provided, and further,
A two-cylinder rolling piston rotary compressor is configured by providing end plates having bearing portions of the shaft and fastening portions connecting the both end plates and the compressor element at both axial ends of each compressor element. Forming two eccentric parts of the shaft with different diameters,
Moreover, the outer diameter of the upper end plate side of the shaft is different from the outer diameter of the lower end plate side, and the central hole provided in the partition plate is formed in a size that allows only the small-diameter side eccentric portion to be inserted. A two-cylinder rotary compressor characterized in that
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03165420A JP3123125B2 (en) | 1991-07-05 | 1991-07-05 | 2-cylinder rotary compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03165420A JP3123125B2 (en) | 1991-07-05 | 1991-07-05 | 2-cylinder rotary compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0510279A true JPH0510279A (en) | 1993-01-19 |
JP3123125B2 JP3123125B2 (en) | 2001-01-09 |
Family
ID=15812088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP03165420A Expired - Fee Related JP3123125B2 (en) | 1991-07-05 | 1991-07-05 | 2-cylinder rotary compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3123125B2 (en) |
Cited By (7)
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---|---|---|---|---|
JP2009180203A (en) * | 2008-02-01 | 2009-08-13 | Hitachi Appliances Inc | Double cylinder rotary compressor |
GB2464724A (en) * | 2008-10-24 | 2010-04-28 | Stephen Butterton | Method and apparatus for distilling water from sea water |
CN102619757A (en) * | 2011-01-27 | 2012-08-01 | 三洋电机株式会社 | Rotary compressor and manufacturing method thereof |
CN103089630A (en) * | 2011-10-31 | 2013-05-08 | 三菱电机株式会社 | Rotary compressor |
JP2013096280A (en) * | 2011-10-31 | 2013-05-20 | Mitsubishi Electric Corp | Rotary compressor |
CN103782036A (en) * | 2011-10-18 | 2014-05-07 | 松下电器产业株式会社 | Rotary compressor having two cylinders |
EP3534006A4 (en) * | 2016-10-26 | 2019-09-25 | Shanghai Highly Electrical Appliances Co., Ltd. | Crankshaft and rotary compressor |
-
1991
- 1991-07-05 JP JP03165420A patent/JP3123125B2/en not_active Expired - Fee Related
Cited By (13)
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CN102619757A (en) * | 2011-01-27 | 2012-08-01 | 三洋电机株式会社 | Rotary compressor and manufacturing method thereof |
CN102619757B (en) * | 2011-01-27 | 2015-01-14 | 三洋电机株式会社 | Rotary compressor and manufacturing method thereof |
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CN103089630B (en) * | 2011-10-31 | 2016-02-17 | 三菱电机株式会社 | Rotary compressor |
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EP3534006A4 (en) * | 2016-10-26 | 2019-09-25 | Shanghai Highly Electrical Appliances Co., Ltd. | Crankshaft and rotary compressor |
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