Abstract: A compressor includes a casing, a housing inside the casing, and first and second welds. The casing includes a tubular barrel casing and an end casing. The first weld welds the barrel casing and the housing together. The second weld welds the barrel casing and the end casing together along a circumferential direction. The second weld includes a repeatedly welded portion formed by one end portion and an other end portion of the second weld overlapping each other, or the second weld includes a plurality of second welds each including a repeatedly welded portion formed by an end portion of the second weld and an end portion of an other one of the second welds overlapping each other. The repeatedly welded portion are formed to reduce deformation of the barrel casing. The repeatedly welded portion and the first weld are aligned along an axial direction of the barrel casing.

Abstract: A scroll compressor includes fixed and movable scrolls including fixed and movable side end plates and fixed and movable side wraps. The fixed-side end plate includes a first fixed-side passage that communicates with a high-pressure space, and a second fixed-side passage to supply lubricating oil from the high-pressure space to a compression chamber formed between the scrolls. The movable-side end plate includes a movable-side groove that intermittently allows communication between the first fixed-side passage and the second fixed-side passage. The compression chamber includes a first compression chamber, and a second compression chamber located inside the first compression chamber. The second fixed-side passage includes a first fixed-side hole that intermittently communicates with the movable-side groove, and a second fixed-side hole that communicates with the first fixed-side hole and intermittently communicates with the second compression chamber.

Abstract: A heat source unit of a refrigerant cycle apparatus includes a compressor, a pipe, and a fixing member. The compressor includes two or three connection portions of a first connection portion connecting a suction pipe, a second connection portion connecting a discharge pipe, and a third connection portion connecting an injection pipe. The pipe includes a vertical portion. At least a part of the vertical portion extends vertically from each of the two or three connection portions. The fixing member fixes at least two of the vertical portions of two or three of the pipes of the suction pipe, the discharge pipe, and the injection pipe. Each of the connection portions of the pipes fixed by the fixing member is located on a first straight line as seen in a top view.

Abstract: A compressor includes a casing, a housing inside the casing, and first and second welds. The casing includes a tubular barrel casing and an end casing. The first weld welds the barrel casing and the housing together. The second weld welds the barrel casing and the end casing together along a circumferential direction. The second weld includes a repeatedly welded portion formed by one end portion and an other end portion of the second weld overlapping each other, or the second weld includes a plurality of second welds each including a repeatedly welded portion formed by an end portion of the second weld and an end portion of an other one of the second welds overlapping each other. The repeatedly welded portion are formed to reduce deformation of the barrel casing. The repeatedly welded portion and the first weld are aligned along an axial direction of the barrel casing.

Abstract: A heat source unit of a refrigerant cycle apparatus includes a compressor, a pipe, and a fixing member. The compressor includes two or three connection portions of a first connection portion connecting a suction pipe, a second connection portion connecting a discharge pipe, and a third connection portion connecting an injection pipe. The pipe includes a vertical portion. At least a part of the vertical portion extends vertically from each of the two or three connection portions. The fixing member fixes at least two of the vertical portions of two or three of the pipes of the suction pipe, the discharge pipe, and the injection pipe. Each of the connection portions of the pipes fixed by the fixing member is located on a first straight line as seen in a top view.

Abstract: A scroll compressor includes fixed and movable scrolls including fixed and movable side end plates and fixed and movable side wraps. The fixed-side end plate includes a first fixed-side passage that communicates with a high-pressure space, and a second fixed-side passage to supply lubricating oil from the high-pressure space to a compression chamber formed between the scrolls. The movable-side end plate includes a movable-side groove that intermittently allows communication between the first fixed-side passage and the second fixed-side passage. The compression chamber includes a first compression chamber, and a second compression chamber located inside the first compression chamber. The second fixed-side passage includes a first fixed-side hole that intermittently communicates with the movable-side groove, and a second fixed-side hole that communicates with the first fixed-side hole and intermittently communicates with the second compression chamber.

Abstract: A fixed scroll wrap (52) includes a fixed spiral portion (57) having a spiral shape and a fixed arcuate portion (58) having an arcuate shape. A movable scroll wrap (62) includes a movable spiral portion (67) having a spiral shape and a movable arcuate portion (68) having an arcuate shape. An arcuate portion side surface clearance (GA) is defined by the fixed arcuate portion (58) and one of the movable spiral portion (67) and the movable arcuate portion (68), or is defined by the movable arcuate portion (68) and one of the fixed spiral portion (57) and the fixed arcuate portion (58). A spiral portion side surface clearance (GI) is defined by the fixed spiral portion (57) and the movable spiral portion (67). The arcuate portion side surface clearance (GA) is larger than the spiral portion side surface clearance (GI).

Abstract: A scroll compressor includes a fixed scroll, a movable scroll revolvable with respect to the fixed scroll, and a crankshaft rotatable to cause the movable scroll to revolve. A discharge port is formed in a first scroll of the fixed scroll or the movable scroll. A cutout portion is formed in a second scroll of the fixed scroll or the movable scroll. The cutout portion formed in the second scroll at least partially passes through a profile of the discharge port formed in the first scroll because of revolution of the movable scroll.

Abstract: Provided is an efficient scroll compressor capable of suppressing deformation of a fixed scroll during operation. The scroll compressor includes: a fixed scroll (30) including a fixed-side end plate (32) and a spiral fixed-side wrap (34) protruding from a front surface (32a) of the fixed-side end plate; a movable scroll (40) including a spiral movable-side wrap (44) combined with the fixed-side wrap to form a compression chamber (Sc); and a cover member (60) disposed in a high-pressure space on a rear surface (32b) side of the fixed-side end plate and attached to the fixed scroll. The fixed-side end plate includes a compression chamber adjacent portion (33) at which the front surface of the fixed-side end plate faces the compression chamber. The compression chamber adjacent portion includes a high-pressure adjacent portion (33a) disposed at a central portion of the compression chamber adjacent portion, and an intermediate- and low-pressure adjacent portion (33b).

Abstract: A scroll compressor includes fixed and movable scrolls defining a compression chamber, and a crankshaft. The movable scroll at least partially covers a discharge port formed in the fixed scroll to change a communication area that is a portion of a total area of the discharge port that contributes to communication with the compression chamber. First to third rotation angle positions become larger in order. As the crankshaft rotates from the first to second rotation angle position the communication area increases at a first rate. In the first rotation angle position the compression chamber and the discharge port start communicating with each other. The second rotation angle position is a preliminary discharge interval angle. As the crankshaft rotates from the second to third rotation angle position the communication area increases at a second rate. The second rate of increase is greater than the first rate of increase.

Abstract: A scroll compressor includes fixed and orbiting scrolls, and satisfies at least one of a first condition and a second condition. In the first condition, a first gap between a distal end of the first wrap and the second base changes heading from an outer peripheral side of the first wrap to an inner peripheral side. In the second condition, a second gap between a distal end of the second wrap and the first base changes heading from an outer peripheral side of the second wrap to an inner peripheral side. A rate of change in the first gap in one area is greater than a rate of change in the first gap in another area. A rate of change in the second gap in one area is greater than a rate of change in the second gap in another area.

Abstract: A fixed scroll wrap (52) includes a fixed spiral portion (57) having a spiral shape and a fixed arcuate portion (58) having an arcuate shape. A movable scroll wrap (62) includes a movable spiral portion (67) having a spiral shape and a movable arcuate portion (68) having an arcuate shape. An arcuate portion side surface clearance (GA) is defined by the fixed arcuate portion (58) and one of the movable spiral portion (67) and the movable arcuate portion (68), or is defined by the movable arcuate portion (68) and one of the fixed spiral portion (57) and the fixed arcuate portion (58). A spiral portion side surface clearance (GI) is defined by the fixed spiral portion (57) and the movable spiral portion (67). The arcuate portion side surface clearance (GA) is larger than the spiral portion side surface clearance (GI).

Abstract: A scroll compressor includes a fixed scroll including a fixed scroll lap, and a movable scroll including a movable scroll lap. A first scroll lap is one of the fixed scroll lap and the movable scroll lap. A second scroll lap is an other of the fixed scroll lap and the movable scroll lap. A second thickness of the second scroll lap is larger than a first thickness of the first scroll lap. A first side face gap is formed between an inner line of the first scroll lap and an outer line of the second scroll lap. A second side face gap is formed between an outer line of the first scroll lap and an inner line of the second scroll lap. The second side face gap is larger than the first side face gap.

Abstract: Provided is an efficient scroll compressor capable of suppressing deformation of a fixed scroll during operation. The scroll compressor includes: a fixed scroll (30) including a fixed-side end plate (32) and a spiral fixed-side wrap (34) protruding from a front surface (32a) of the fixed-side end plate; a movable scroll (40) including a spiral movable-side wrap (44) combined with the fixed-side wrap to form a compression chamber (Sc); and a cover member (60) disposed in a high-pressure space on a rear surface (32b) side of the fixed-side end plate and attached to the fixed scroll. The fixed-side end plate includes a compression chamber adjacent portion (33) at which the front surface of the fixed-side end plate faces the compression chamber. The compression chamber adjacent portion includes a high-pressure adjacent portion (33a) disposed at a central portion of the compression chamber adjacent portion, and an intermediate- and low-pressure adjacent portion (33b).

Abstract: A first exemplary aspect is a cooling apparatus including: a heat insulator covering at least a part of a target object a supply pipe connected to a space between the heat insulator and the target object; a crusher configured to supply a sublimable coolant powder to the supply pipe; and an air cooler configured to jet gas to the supply pipe so that the coolant powder flows therethrough.

Abstract: A scroll compressor includes fixed and orbiting scrolls, and satisfies at least one of a first condition and a second condition. In the first condition, a first gap between a distal end of the first wrap and the second base changes heading from an outer peripheral side of the first wrap to an inner peripheral side. In the second condition, a second gap between a distal end of the second wrap and the first base changes heading from an outer peripheral side of the second wrap to an inner peripheral side. A rate of change in the first gap in one area is greater than a rate of change in the first gap in another area. A rate of change in the second gap in one area is greater than a rate of change in the second gap in another area.

Abstract: A scroll compressor includes a fixed scroll including a fixed scroll lap, and a movable scroll including a movable scroll lap. A first scroll lap is one of the fixed scroll lap and the movable scroll lap. A second scroll lap is an other of the fixed scroll lap and the movable scroll lap. A second thickness of the second scroll lap is larger than a first thickness of the first scroll lap. A first side face gap is formed between an inner line of the first scroll lap and an outer line of the second scroll lap. A second side face gap is formed between an outer line of the first scroll lap and an inner line of the second scroll lap. The second side face gap is larger than the first side face gap.

Abstract: A scroll compressor includes a fixed scroll and a movable scroll. The fixed scroll has a spiral fixed-side wrap positioned upright on a surface of a fixed-side plate. The movable scroll is orbitably disposed to face the fixed scroll. The movable scroll has a spiral movable-side wrap positioned upright on a surface of a movable-side plate, with the movable-side wrap being configured to mesh with the fixed-side wrap. A side clearance is formed between a side surface of the fixed-side wrap and a side surface of the movable-side wrap so as to increase from an outer peripheral side toward an inner peripheral side of each of the wraps.

Abstract: A scroll compressor includes a compression mechanism having fixed and movable scrolls to form a fluid chamber. The fixed scroll has an end plate, an outer peripheral wall, and a wrap. The movable scroll has an end plate and a wrap. A scroll oil groove is formed in a sliding contact surface of the outer peripheral wall. Lubricating oil having a high pressure corresponding to a discharge pressure of the compression mechanism is fed into the scroll oil groove. A scroll oil groove is formed in a sliding contact surface of the movable scroll, which slides on the outer peripheral wall. The fixed and movable scroll oil grooves communicate with each other without communicating with the fluid chamber in a first operation. The movable scroll oil groove simultaneously communicates with the fixed scroll oil groove and the fluid chamber in a second operation after the first operation.

Abstract: A scroll compressor includes fixed and movable scrolls defining a compression chamber, and a crankshaft. The movable scroll at least partially covers a discharge port formed in the fixed scroll to change a communication area that is a portion of a total area of the discharge port that contributes to communication with the compression chamber. First to third rotation angle positions become larger in order. As the crankshaft rotates from the first to second rotation angle position the communication area increases at a first rate. In the first rotation angle position the compression chamber and the discharge port start communicating with each other. The second rotation angle position is a preliminary discharge interval angle. As the crankshaft rotates from the second to third rotation angle position the communication area increases at a second rate. The second rate of increase is greater than the first rate of increase.