JP2011247091A5

JP2011247091A5 -

Info

Publication number: JP2011247091A5
Application number: JP2010117585A
Authority: JP
Filing date: 2010-05-21
Publication date: 2012-08-30
Anticipated expiration: 2030-05-21

Description

本発明に係るベーンロータリー型圧縮機は、下記の構成からなるものである。すなわち、密閉容器内に、冷媒を圧縮させる圧縮要素と、圧縮要素の駆動源となる電動要素とを備えたベーンロータリー型圧縮機において、圧縮要素は、電動要素により回転駆動されるシャフトと、シャフトの中心軸線と同一軸線上に配置されてシャフトと共に回転するローラーと、ローラーを収納する内周面が円筒状に形成され、内周面の中心軸がシャフトの中心軸線に対し偏心して配設されたシリンダーと、シリンダーの両端面を閉塞する２つの軸受と、ローラーに形成されたベーン溝内を圧縮工程中に往復摺動し、シリンダーの内周面に沿い、ローラーおよび軸受により形成される圧縮室を複数の作動室に仕切るベーンと、圧縮室へ密閉容器底部に溜まった潤滑油を供給する給油手段とを備え、給油手段は、シャフトの軸心部に設けられ電動要素とは反対側の端面に開口し、シャフトの回転により密閉容器底部に溜まった潤滑油を吸上げる油吸込み穴と、ローラーの少なくとも一方の端面の近傍のシャフトに設けられ油吸込み穴と連通する給油穴と、軸受のシリンダーを閉塞する端面の少なくとも一方に設けられ給油穴と連通する軸受端面給油溝と、ベーン溝と摺動するベーンの摺動面の一方に、所定の回転位相で軸受端面給油溝と連通し、かつベーンがベーン溝からローラー外周部へ突出する回転位相で圧縮室と連通するように設けられたベーン給油溝とを備えるものである。 The vane rotary type compressor which concerns on this invention consists of the following structures. That is, in a vane rotary type compressor provided with a compression element for compressing a refrigerant and an electric element serving as a drive source of the compression element in a closed container, the compression element has a shaft rotationally driven by the electric element The roller which is disposed on the same axis as the central axis of the shaft and which rotates with the shaft, and the inner peripheral surface for housing the roller are formed in a cylindrical shape, and the central axis of the inner peripheral surface is disposed eccentrically with respect to the central axis of the shaft The cylinder, two bearings that close both ends of the cylinder, and the vane groove formed in the roller, reciprocate and slide during the compression process, and the compression formed by the roller and the bearing along the inner circumferential surface of the cylinder comprising a vane partitioning the chamber into a plurality of working chambers, and oil supply means for supplying a lubricating oil accumulated in the closed vessel bottom to compression chamber, lubrication means, et al provided in the axial portion of the shaft Open to an end face opposite to the electrostatic dynamic elements, and an oil suction hole wicking lubricating oil accumulated in the closed vessel bottom by rotation of the shaft, the oil suction hole provided in the vicinity of the shaft of at least one end face of the B Ra and the oil supply hole which communicates the bearing end face lubrication groove communicating with the oil supply hole provided on at least one end face which closes the cylinder of the bearing, the hand of the sliding surface of the vane slides with the base over down grooves, predetermined the communication with the bearing end face lubrication grooves in the rotational phase, or Tsube over emissions are those comprising a vane oil supply groove provided so as to communicate with the compression chamber at the rotational phase which protrudes from the vane groove to the roller outer peripheral portion.

本発明に係るベーンロータリー型圧縮機においては、圧縮要素に動力を伝えるシャフトの軸心部に、密閉容器底部に溜まった潤滑油を当該シャフトの回転により吸上げる油吸込み穴を設けるとともに、ローラーの少なくとも一方の端面の近傍のシャフトに、油吸込み穴と連通する給油穴を設け、軸受のシリンダーを閉塞する端面の少なくとも一方に設けられ給油穴と連通する軸受端面給油溝を設け、ベーン溝と摺動するベーンの摺動面の一方に、所定の回転位相で軸受端面給油溝と連通し、かつベーンがベーン溝からローラー外周部へ突出する回転位相で圧縮室と連通するようにベーン給油溝を設けているので、ベーンがベーン溝内を往復運動する度に潤滑油を供給でき、差圧が低い運転条件においても確実にベーンの摺動面とベーン先端、作動室内に潤滑油を供給することができる。 In the vane rotary compressor according to the present invention, the axial portion of the shaft for transmitting power to the compression element, provided with an oil suction hole wicking by the rotation of the sealed container bottom the shaft of the accumulated lubricating oil portion, b Ra at least one of the vicinity of the end face the shaft, the oil supply hole which communicates with the oil suction hole is formed, provided the bearing end face lubrication groove communicating with the oil supply hole provided on at least one end face which closes the cylinder of the bearing, base over emissions of the hand of the sliding surface of the vane groove and the sliding communicates with the bearing end face lubrication groove at a predetermined rotational phase, or compression chamber and communicating with the rotational phase Tsube over emissions protrudes from the vane groove to the roller outer peripheral portion Since the vane oil supply groove is provided as described above, the lubricating oil can be supplied each time the vane reciprocates in the vane groove, and the sliding surface and the vane tip of the vane can be reliably performed even under operating conditions where the differential pressure is low. It is possible to supply the lubricating oil to the dynamic chamber.

Claims

In a vane rotary type compressor provided with a compression element for compressing a refrigerant and an electric element serving as a drive source of the compression element in a closed vessel,
The compression factor is
A shaft rotationally driven by the electric element;
A roller disposed coaxially with the central axis of the shaft and rotating with the shaft;
An inner circumferential surface for housing the roller formed in a cylindrical shape, and a cylinder having a central axis of the inner circumferential surface disposed eccentric to a central axis of the shaft;
Two bearings closing both end faces of the cylinder;
A vane which reciprocates and slides in a vane groove formed in the roller during a compression process and divides a compression chamber formed by the roller and the bearing into a plurality of working chambers along the inner circumferential surface of the cylinder;
And a fuel supply means for supplying accumulated lubricating oil to the sealed container bottom Previous Symbol compression chamber,
The refueling means is
The opening in the end face opposite to the the axis portion provided et been pre SL electromotive element of the shaft, and an oil suction hole wicking lubricating oil accumulated in the closed vessel bottom by rotation of the shaft,
And oil supply hole communicating with the oil suction hole provided in said shaft in the vicinity of at least one end face of the front Symbol roller,
A bearing end surface oil supply groove provided on at least one of the end surfaces of the bearing closing the cylinder and communicating with the oil supply hole ;
The hand of the sliding surface of the vane of pre Symbol vane groove and the sliding communicates with the bearing end face lubrication groove at a predetermined rotational phase, or One rotation phase which the vane protrudes from the vane groove to the roller outer peripheral portion And a vane oil supply groove provided to communicate with the compression chamber.

In a vane rotary type compressor provided with a compression element for compressing a refrigerant and an electric element serving as a drive source of the compression element in a closed vessel,
The compression factor is
A shaft rotationally driven by the electric element;
A roller disposed coaxially with the central axis of the shaft and rotating with the shaft;
An inner circumferential surface for housing the roller formed in a cylindrical shape, and a cylinder having a central axis of the inner circumferential surface disposed eccentric to a central axis of the shaft;
Two bearings closing both end faces of the cylinder;
A vane which reciprocates and slides in a vane groove formed in the roller during a compression process and divides a compression chamber formed by the roller and the bearing into a plurality of working chambers along the inner circumferential surface of the cylinder;
And a fuel supply means for supplying accumulated lubricating oil to the sealed container bottom Previous Symbol compression chamber,
The refueling means is
The opening in the end face opposite to the the axis portion provided et been pre SL electromotive element of the shaft, and an oil suction hole wicking lubricating oil accumulated in the closed vessel bottom by rotation of the shaft,
And oil supply hole communicating with the oil suction hole provided in said shaft in the vicinity of at least one end face of the front Symbol roller,
An oil supply groove provided on at least one of the end faces of the roller and in communication with the oil supply hole ;
The hand of the sliding surface of the vane of pre Symbol vane groove and the sliding, the at predetermined said through oil supply groove and communicating with the rotational phase, or One rotation phase which the vane protrudes from the vane groove to the roller outer peripheral portion What is claimed is: 1. A vane rotary type compressor comprising: a vane oil supply groove provided to communicate with a compression chamber.

One sliding surface of the vane at a position which is at the inner end side of the vane oil supply groove in the vane and does not communicate with the compression chamber even when the vane protrudes from the vane groove to the roller outer peripheral portion 3. The vane rotary compressor according to claim 2, further comprising a communication groove provided extending from the other to the other sliding surface and in communication with the oil supply groove at a predetermined rotational phase.

The vane refueling groove is formed on the side surface which does not receive a reaction force from the vane groove outer peripheral edge with respect to the pressure of the refrigerant at the time of compression in the vane. The vane rotary type compressor described in.

The volume of the said vane oil supply groove | channel is comprised so that it may become a ratio of 0.01%-1% with respect to the suction | inhalation volume of the said compression element. Vane rotary type compressor as described.