Abstract: Provided is a hybrid electrolytic capacitor having large capacitance, low ESR, and superior high-frequency characteristics and high-temperature endurance.

Abstract: A scroll compressor includes a casing, compression mechanism housed in the casing, and drive shaft. The compression mechanism includes fixed and movable scrolls, and a housing. The housing includes a bearing portion configured to rotatably support the drive shaft, a body portion continuous with the bearing portion and extending radially outward, a pressing portion provided radially outside the body portion to press the casing, and a supporting portion extending from a face of the body portion near the fixed scroll. An end face of the supporting portion near the fixed scroll is a fastening face to which the fixed scroll is fastened. A gap is formed between an inner peripheral surface of the casing and outer peripheral surfaces of the body and supporting portions. An axial length of the gap is greater than or equal to an axial length of an inner peripheral surface of the supporting portion.

Abstract: A compressor including a casing having a cylindrical shape, and a compression mechanism housed in the casing. The compression mechanism having a housing including a pressing portion pressed against the casing and a weld portion welded to the casing. At least part of the pressing portion and at least part of the weld portion being arranged side by side in a circumferential direction of the casing.

Abstract: A scroll compressor includes a casing, compression mechanism housed in the casing, and drive shaft. The compression mechanism includes fixed and movable scrolls, and a housing. The housing includes a bearing portion configured to rotatably support the drive shaft, a body portion continuous with the bearing portion and extending radially outward, a pressing portion provided radially outside the body portion to press the casing, and a supporting portion extending from a face of the body portion near the fixed scroll. An end face of the supporting portion near the fixed scroll is a fastening face to which the fixed scroll is fastened. A gap is formed between an inner peripheral surface of the casing and outer peripheral surfaces of the body and supporting portions. An axial length of the gap is greater than or equal to an axial length of an inner peripheral surface of the supporting portion.

Abstract: A scroll compressor includes a casing, a low-pressure space and a compression mechanism. The compression mechanism includes fixed and movable scrolls, a fluid chamber including first and second compression chambers, and an adjustment mechanism. The fluid chamber has different discharge start points between the first and second compression chambers. An oil inflow groove is formed in one sliding surface, and an oil relief passage is formed in the other sliding surface. The oil relief passage includes a communication portion that communicates with the oil inflow groove in a predetermined angular range, lubricating oil flowing from the oil inflow groove into the low-pressure space through the communication portion. The predetermined angular range is from a position between a discharge start point of the first compression chamber and a discharge start point of the second compression chamber to a position after the discharge start of the second compression chamber.

Abstract: A scroll compressor includes a casing, a low-pressure space and a compression mechanism. The compression mechanism includes fixed and movable scrolls, a fluid chamber including first and second compression chambers, and an adjustment mechanism. The fluid chamber has different discharge start points between the first and second compression chambers. An oil inflow groove is formed in one sliding surface, and an oil relief passage is formed in the other sliding surface. The oil relief passage includes a communication portion that communicates with the oil inflow groove in a predetermined angular range, lubricating oil flowing from the oil inflow groove into the low-pressure space through the communication portion. The predetermined angular range is from a position between a discharge start point of the first compression chamber and a discharge start point of the second compression chamber to a position after the discharge start of the second compression chamber.

Abstract: A scroll-type compressor includes a compression-chamber-forming member, a housing, an injection passage part, and a relief mechanism. The compression-chamber-forming member forms a compression chamber and has a movable scroll and a fixed scroll. The housing forms a back pressure chamber. Refrigerant to apply back pressure to the compression-chamber-forming member is accumulated in the back pressure chamber. The injection passage part is linked to the compression chamber. The relief mechanism is configured to establish a communication between the compression chamber and the back pressure chamber communicating when injection pressure of the refrigerant flowing from the injection passage part into the compression chamber is higher than the pressure in the back pressure chamber.

Abstract: A scroll-type compressor includes a compression-chamber-forming member, a housing, an injection passage part, and a relief mechanism. The compression-chamber-forming member forms a compression chamber and has a movable scroll and a fixed scroll. The housing forms a back pressure chamber. Refrigerant to apply back pressure to the compression-chamber-forming member is accumulated in the back pressure chamber. The injection passage part is linked to the compression chamber. The relief mechanism is configured to establish a communication between the compression chamber and the back pressure chamber communicating when injection pressure of the refrigerant flowing from the injection passage part into the compression chamber is higher than the pressure in the back pressure chamber.

Abstract: A scroll compressor includes a compression mechanism including fixed and movable scrolls. The fixed and movable scrolls have end plates and spiral laps. The laps are engaged to form a compression chamber. The end plates are in pressure contact around the compression chamber to form a thrust sliding surface. The thrust sliding surface has an oil groove extending around the compression chamber. High-pressure refrigerating machine oil is supplied to the oil groove. During orbiting of the orbiting scroll, at least in a region serving as a suction space of fluid in an outer peripheral portion of the compression chamber, an outer seal length from an outer peripheral edge of the oil groove in the thrust sliding surface to an outer edge of the movable end plate is smaller than an inner seal length from an inner peripheral edge of the oil groove to a peripheral edge of the compression chamber.

Abstract: A scroll compressor includes a compression mechanism including fixed and movable scrolls. The fixed and movable scrolls have end plates and spiral laps. The laps are engaged to form a compression chamber. The end plates are in pressure contact around the compression chamber to form a thrust sliding surface. The thrust sliding surface has an oil groove extending around the compression chamber. High-pressure refrigerating machine oil is supplied to the oil groove. During orbiting of the orbiting scroll, at least in a region serving as a suction space of fluid in an outer peripheral portion of the compression chamber, an outer seal length from an outer peripheral edge of the oil groove in the thrust sliding surface to an outer edge of the movable end plate is smaller than an inner seal length from an inner peripheral edge of the oil groove to a peripheral edge of 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 scroll compressor includes a fixed scroll, an orbiting scroll and an injection passage. Each scroll has an end plate and a spiral lap. The scrolls mesh with each other to form a compression chamber. The injection passage supplies intermediate pressure refrigerant and refrigeration oil separated from discharged refrigerant to the compression chamber. At least one of the scrolls has a bottom land facing the lap of the other of the scrolls. The bottom land has an intermediate bottom region facing a part of the compression chamber communicating with the injection passage, and a suction side bottom region located closer to an outer end of the lap than the intermediate bottom region. A clearance between the suction side bottom region and the end face of the lap is larger than a clearance between the intermediate bottom region and the end face of the lap.

Abstract: A scroll compressor includes a fixed scroll, an orbiting scroll and an injection passage. Each scroll has an end plate and a spiral lap. The scrolls mesh with each other to form a compression chamber. The injection passage supplies intermediate pressure refrigerant and refrigeration oil separated from discharged refrigerant to the compression chamber. At least one of the scrolls has a bottom land facing the lap of the other of the scrolls. The bottom land has an intermediate bottom region facing a part of the compression chamber communicating with the injection passage, and a suction side bottom region located closer to an outer end of the lap than the intermediate bottom region. A clearance between the suction side bottom region and the end face of the lap is larger than a clearance between the intermediate bottom region and the end face of the lap.

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.