Abstract:
In a casing (5), a motor (9) and a scroll mechanism (7) coupled to the motor (9) by a drive shaft (11) are disposed, and the drive shaft (11) is supported by a bearing (41) so as to rotate therein supplying a lubricating oil between the drive shaft (11) and the bearing (41) through which the drive shaft (11) passes. An oil collecting portion (47) is formed at an end portion in the axis direction of the a bearing portion (45) constituted of an outer peripheral surface of the drive shaft (11) and an inner peripheral surface of the bearing (41), which includes an oil groove (51) formed in the periphery direction thereof. An oil passage (49) is formed at the bearing (41). One end of the oil passage (49) is connected to the oil collecting portion (47), while the other end of the oil passage (49) opens at a covered surface of the bearing (41).
Abstract:
A flow rate controlling member, provided with a spiral passageway formed on its outer periphery, is inserted into a high pressure fluid introducing passageway formed in an end plate of a movable scroll for the introducing of fluid from a fluid feeding path into a thrust bearing.
Abstract:
A compressor includes a casing configured to store lubricating oil in a bottom part, and a compression mechanism accommodated in an interior of the casing. Lubricating oil is separated out from high-pressure refrigerant discharged from the compression mechanism. Lubricating oil separated out by the oil separator flows from a high-pressure space formed in the interior of the casing and into which the high-pressure refrigerant flows. An ejector mechanism is disposed in the interior of the casing, preferably in the high-pressure space. The ejector mechanism includes a refrigerant-accelerating flow path in which the high-pressure refrigerant flows via a narrowed part in order to increase a flow rate of the high-pressure refrigerant, and an oil suction flow path merging with the refrigerant-accelerating flow path.
Abstract:
A fixed scroll (60) is provided with a pin shaft portion (70) which is formed in a cylindrical shape. Formed in a movable scroll (50) is a slide groove (80) which extends in the radial direction of the movable scroll (50). The pin shaft portion (70) of the fixed scroll (60) is engaged into the slide groove (80) of the movable scroll (50). During orbital movement of the movable scroll (50), the pin shaft portion (70) slidingly contacts a side surface of the slide groove (80), whereby rotation of the movable scroll (50) is restricted.
Abstract:
A flow rate controlling member, provided with a spiral passageway formed on its outer periphery, is inserted into a high pressure fluid introducing passageway formed in an end plate of a movable scroll for the introducing of fluid from a fluid feeding path into a thrust bearing.
Abstract:
A compressor includes a casing configured to store lubricating oil in a bottom part, and a compression mechanism accommodated in an interior of the casing. Lubricating oil is separated out from high-pressure refrigerant discharged from the compression mechanism. Lubricating oil separated out by the oil separator flows from a high-pressure space formed in the interior of the casing and into which the high-pressure refrigerant flows. An ejector mechanism is disposed in the interior of the casing, preferably in the high-pressure space. The ejector mechanism includes a refrigerant-accelerating flow path in which the high-pressure refrigerant flows via a narrowed part in order to increase a flow rate of the high-pressure refrigerant, and an oil suction flow path merging with the refrigerant-accelerating flow path.
Abstract:
A scroll compressor (10) includes a bearing oil supply passage (70) configured to supply a refrigeration oil from an oil reservoir (18) located in a casing (15) to a bearing of a driving shaft (60). An oil groove (80) which communicates only with the oil reservoir (18) in the casing (15) through a connection passage (86) and a capillary tube (87) is formed on a thrust sliding surface (35) of a fixed scroll (30). Since the bearing oil supply passage (70) is not in communication with the oil groove (80), even when an orbiting scroll (40) is tilted and a pressure of the oil groove (80) decreases, a pressure of the bearing oil supply passage (70) does not decrease, and accordingly, the refrigeration oil is supplied from the bearing oil supply passage (70) to the bearing of the driving shaft (60).
Abstract:
A scroll compressor includes a pressing mechanism and a back-flow prevention mechanism. The pressing mechanism includes a back-pressure chamber facing a back surface of a movable-scroll end plate, and a back-pressure supply path arranged to allow the back-pressure chamber to communicate with a compression chamber which is in a state right before the compression chamber communicates with an outlet port or a state in which the compression chamber communicates with the outlet port. The back-flow prevention mechanism allows refrigerant of the back-pressure supply path to flow from the compression chamber to the back-pressure chamber, and prevents fluid of the back-pressure supply path from returning from the back-pressure chamber to the compression chamber.
Abstract:
A scroll compressor includes a pressing mechanism and a back-flow prevention mechanism. The pressing mechanism includes a back-pressure chamber facing a back surface of a movable-scroll end plate, and a back-pressure supply path arranged to allow the back-pressure chamber to communicate with a compression chamber which is in a state right before the compression chamber communicates with an outlet port or a state in which the compression chamber communicates with the outlet port. The back-flow prevention mechanism allows refrigerant of the back-pressure supply path to flow from the compression chamber to the back-pressure chamber, and prevents fluid of the back-pressure supply path from returning from the back-pressure chamber to the compression chamber.
Abstract:
A fixed scroll is provided with a pin shaft portion which is formed in a cylindrical shape. Formed in a movable scroll is a slide groove which extends in the radial direction of the movable scroll. The pin shaft portion of the fixed scroll is engaged into the slide groove of the movable scroll. During orbital movement of the movable scroll, the pin shaft portion slidingly contacts a side surface of the slide groove, whereby rotation of the movable scroll is restricted.