摘要:
A pneumatic motor includes a stator having a stator inner wall including a dwell region and a rotor eccentrically disposed within the stator. The rotor is configured to rotate about the axis of rotation and includes a plurality of vanes disposed around the rotor. Each vane of the plurality of vanes is configured to slide within a respective slot formed in the outer surface of the rotor between a fully retracted position and a fully extended position as the rotor rotates about the axis of rotation to maintain contact with the stator inner wall. The stator inner wall has a radius relative to the axis of rotation that is substantially constant within the dwell region so that vanes of the plurality of vanes are in the fully extended position within the dwell region.
摘要:
A pneumatic tool motor (10) comprises a cylinder (2), a side cover (10) disposed on a front end of the cylinder (2), and a rear cover (60) disposed on a rear end of the cylinder (2). The side cover (10) includes two first gas accumulation grooves (12) and two second gas accumulation grooves (14). Each of the first and second gas accumulation grooves (12, 14) includes a gas accumulation portion (121, 141) aligned with an associated discharge passage (43) or inlet passage (41) and a gas guiding portion (122, 142) shallower than the gas accumulation portion (121, 141) Each of two exhaust ports (64) and two inlet ports (62) of the rear cover (60) includes a gas accumulation portion (641, 621) aligned with an associated discharge passage (43) or inlet passage (41) and a gas guiding portion (642, 622) shallower than the gas accumulation portion (641, 621).
摘要:
An apparatus is disclosed that includes a fluid inlet in fluid communication with a valve assembly, the valve assembly structured to selectively permit the flow of a motive fluid from the fluid inlet to a fluid driven motor, and wherein the valve assembly further includes a first plunger and a second plunger, one of the first plunger and the second plunger including a plurality of axially incorporated fluid channels, wherein the plunger including a plurality of axially incorporated fluid channels is structured to be selectively driven by an actuator such that as the plunger including a plurality of axially incorporated fluid channels is axially displaced away from a first position the number of axially incorporated fluid channels in fluid communication with the fluid inlet and the fluid driven motor increases.
摘要:
The present invention provides a highly efficient and highly reliable scroll fluid machine that suppresses fluctuations in port aperture area during each revolution of an orbiting scroll while ensuring port aperture area. In the present scroll fluid machine, suction ports for sucking in a working fluid are disposed on a second base plate so as to have openings in a vicinity of a winding start end portion of a second spiral tooth, and near an inward facing surface of the second spiral tooth at a position that is separated by an involute angle of approximately 90° from the winding start end portion of the second spiral tooth. Discharge ports for discharging the working fluid are disposed on a first base plate so as to have openings in a vicinity of a winding start end portion of a first spiral tooth, and near an inward facing surface of the first spiral tooth at a position that is separated by an involute angle of approximately 90° from the winding start end portion of the first spiral tooth.
摘要:
Provided are a vane air motor capable of starting driving even more reliably even with low-pressure compressed air and an air tool having the vane air motor. A vane air motor (12, 112, 212) has a rotor (40, 140, 240) which is provided on an outer peripheral surface (40b, 140b, 240b) thereof with cut-out portions (44, 144, 244) for promoting vane pushing-out action which intersect vane accommodating grooves (40a, 140a, 240a) at a position of a predetermined depth from the outer peripheral surface (40b, 140b, 240b).
摘要:
A vane air motor configured to prevent uneven wear of vanes is provided. The vane air motor has a cylindrical member having a rotor chamber (19) defined by a circular cylindrical inner peripheral surface (11), and a vaned rotor. A plurality of air discharge openings (50) are provided over a predetermined length range in the axial direction of the rotor chamber. Each pair of axially adjacent air discharge openings are spaced from each other and overlap each other as seen in the circumferential direction of the rotor chamber.
摘要:
In a compression/expansion unit (30) serving as a fluid machine, both a compression mechanism (50) and an expansion mechanism (60) are housed in a single casing (31). An oil supply passageway (90) is formed in a shaft (40) by which the compression mechanism (50) and the expansion mechanism (60) are coupled together. Refrigeration oil accumulated in the bottom of the casing (31) is drawn up into the oil supply passageway (90) and is supplied to the compression mechanism (50) and to the expansion mechanism (60). Surplus refrigeration oil, which is supplied to neither of the compression and expansion mechanisms (50) and (60), is discharged out of the terminating end of the oil supply passageway (90) which opens at the upper end of the shaft (40). Thereafter, the surplus refrigeration oil flows into an oil return pipe (102) from a lead-out hole (101) and is returned back towards a second space (39). This reduces the amount of heat input to the fluid flowing through the expansion mechanism from the surplus refrigeration oil which has not been utilized to lubricate the compression and expansion mechanisms.