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    • 45. 发明授权
    • Variable capacity vane compressor having an improved bearing arrangement
for a drive shaft and a capacity control element
    • 具有改进的驱动轴和能力控制元件的轴承安装的可变能力的空气压缩机
    • US5240387A
    • 1993-08-31
    • US880137
    • 1992-05-07
    • Nobuyuki NakajimaTatsuo Nakaya
    • Nobuyuki NakajimaTatsuo Nakaya
    • F04C18/344F04B49/00F04C28/10F04C28/14F04C28/26F04C29/00F04C29/06
    • F04C28/14Y10S417/01
    • A variable capacity vane compressor includes a bearing arrangement having a radial bearing radially supporting a drive shaft of the compressor, and a thrust bearing rotatably supporting a capacity control element. The bearing arrangement comprises an annular member fixed in a through hole formed through a side block of the compressor, through which the drive shaft extends. The annular member has an inner peripheral surface in which the radial and thrust bearings are received. The annular member is formed of a material having a coefficient of thermal expansion substantially equal to that of a material forming the radial bearing. The thrust bearing has a first race disposed on a side thereof close to a rotor of the compressor, and a second race disposed on a side remote from the rotor. The first race is force-fitted in a through hole formed through the capacity control element and slidably fitted in the inner peripheral surface of the annular member. The first and second races have respective inner peripheral surfaces thereof spaced from an outer peripheral surface of the drive shaft.
    • 可变容量叶片式压缩机包括具有径向支撑压缩机的驱动轴的径向轴承的轴承装置和可旋转地支撑容量控制元件的推力轴承。 轴承装置包括固定在通过压缩机的侧块形成的通孔中的环形构件,驱动轴穿过该通孔延伸。 环形构件具有内周面,径向和止推轴承被容纳在该内周面中。 环形构件由具有基本上等于形成径向轴承的材料的热膨胀系数的材料形成。 推力轴承具有靠近压缩机的转子的一侧设置的第一座圈和设置在远离转子的一侧的第二座圈。 第一座圈被强制安装在通过容量控制元件形成的通孔中并且可滑动地装配在环形构件的内周表面中。 第一和第二种族具有与驱动轴的外周面间隔开的各自的内周面。
    • 47. 发明授权
    • Variable capacity vane compressor
    • 可变容量叶片式压缩机
    • US5049043A
    • 1991-09-17
    • US497313
    • 1990-03-22
    • Nobuyuki Nakajima
    • Nobuyuki Nakajima
    • F04C28/26F04B49/00F04C18/344F04C27/00F04C28/14
    • F04C28/14
    • A variable capacity vane compressor in which one end face of a side block facing the rotor is formed therein with an annular recess in a bottom of which is formed a second recess. A control element rotatably received in the annular recess for varying the timing of commencement of the compressor. The control element cooperates with the second recess to define therebetween a pressure working space. The control element has a pressure-receiving protuberance slidably fitted in the pressure working space to divide same into a first pressure chamber and a second pressure chamber. A communication passage extends between the first pressure chamber and a low pressure zone. A control valve device is arranged in the communication passage for opening and closing the communication passage in response to suction pressure. A sealing device is provided in the bottom of the annular recess and engages portions of the control element other than the pressure-receiving protuberance. A high pressure-introducing passage introduces high pressure into the first pressure chamber. A restriction passage introduces high pressure into the second pressure chamber. The high pressure-introducing passage has a cross-sectional area larger than the cross-sectional area of the restriction passage. The inner wall of the pressure working space and the pressure-receiving portion defines therebetween a clearance smaller than the cross-sectional area of the restriction passage.
    • 一种可变容量叶片式压缩机,其中侧块的面向转子的一个端面形成有其底部的环形凹部形成第二凹部。 可旋转地容纳在环形凹部中的控制元件,用于改变压缩机的启动时间。 控制元件与第二凹槽配合以在其间限定压力工作空间。 控制元件具有可滑动地装配在压力工作空间中的受压突起,以将其分成第一压力室和第二压力室。 连通通道在第一压力室和低压区之间延伸。 控制阀装置设置在连通通道中,用于响应于吸入压力打开和关闭连通通道。 密封装置设置在环形凹部的底部中并且接合除受压突起之外的控制元件的部分。 高压引入通道将高压引入第一压力室。 限制通道将高压引入第二压力室。 高压导入通路的截面积大于限制通路的截面积。 压力工作空间的内壁和压力接收部分之间形成有比限制通道的横截面积小的间隙。
    • 48. 发明授权
    • Lubricating oil supply device for van compressors
    • 用于厢式压缩机的润滑油供应装置
    • US5049041A
    • 1991-09-17
    • US476693
    • 1990-02-07
    • Nobuyuki Nakajima
    • Nobuyuki Nakajima
    • F04C18/344F04C29/02F04C29/04
    • F04C29/04F04C29/02
    • A vane compressor has at least one compression space defined between a rotor and a cylinder. A shaft seal and a bearing are fitted on a driving shaft and disposed adjacent to each other. A lubricating oil supply device supplies compression medium to the shaft seal and the bearing, through at least one passage extending between the at least one compression space and the shaft seal and the bearing. The at least one passage has an open end opening into the at least one compression space at a predetermined circumferential location at which pressure within the at least one compression space changes from a negative value into a positive value when each of the vanes passes the predetermined circumferential location, whereby lubrication and cooling of the shaft seal and the bearing is effected in an efficient manner.
    • 叶片式压缩机具有限定在转子和气缸之间的至少一个压缩空间。 轴封和轴承安装在驱动轴上并且彼此相邻布置。 润滑油供应装置通过在至少一个压缩空间与轴封和轴承之间延伸的至少一个通道向轴封和轴承提供压缩介质。 所述至少一个通道在所述至少一个压缩空间中具有开口端,所述至少一个压缩空间在所述至少一个压缩空间内的压力在预定的周向位置处变化,当每个所述叶片通过所述预定圆周 位置,从而以有效的方式实现轴封和轴承的润滑和冷却。
    • 49. 发明授权
    • Variable capacity vane compressor
    • 可变容量叶片式压缩机
    • US4813854A
    • 1989-03-21
    • US196329
    • 1988-05-20
    • Nobuyuki Nakajima
    • Nobuyuki Nakajima
    • F04C28/10F04B27/06F04B49/00F04C28/00F04C28/14F04C28/26F04C29/12F04C29/08
    • F04C29/128F04C28/14
    • A variable capacity vane compressor has a cylinder within which a pair of compression spaces are defined between the cylinder and a rotor rotatably received within the cylinder at diametrically opposite locations, and a control element disposed in the cylinder for rotation about its own axis in circumferentially opposite directions in response to a difference between pressure from a lower pressure zone and pressure from a higher pressure zone. The control element has its outer peripheral edge formed with a pair of cut-out portions at substantially diametrically opposite locations, which each have a leading end in the direction of rotation of the rotor. The rotation of the control element causes a change in the circumferential position of each cut-out portion to thereby vary the timing of commencement of compression in the corresponding compression space and hence vary the compressor capacity. The leading ends of the cut-out portions are located at diametrically asymmetric locations to provide a difference in the timing of commencement of compression between the compression spaces. Therefore, the compressor as a whole is free from insufficient compression and can provide sufficient discharge pressure even when it assumes the minimum capacity position.