A hermetic scroll compressor has a symmetric wrap structure. The scroll compressor includes fixed and movable scrolls, a crank shaft, a motor, and a casing. The casing includes an oil reservoir, and a motor space serving as a low-pressure space. The fixed and movable scrolls define first and second compression chambers. The fixed scroll has a first passage to guide gas refrigerant in the low-pressure space to the first and second compression chambers. The movable scroll has a second passage to guide gas refrigerant in the low-pressure space to the first compression chamber. The gas refrigerant that has passed through the first and second passages flows into the first compression chamber. The gas refrigerant that has passed through the first passage also flows into the second compression chamber.

There is disclosed a scroll compressor according to the present disclosure in which a discharge port is formed at a central portion thereof, and a pair of two compression chambers continuously moving toward the discharge port are formed, and a plurality of bypass portions are formed at each interval along a movement path of etch compression chamber in the both compression chambers, and compression gradients of the both compression chambers are formed to be different from each other, wherein when an interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval, respectively, a first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is formed to be smaller than that of a first bypass portion belonging to the other compression chamber between the both compressor chambers.

In a stepped scroll compressor, inclined surfaces (28, 29) of which heights are gradually reduced toward stepped portions are formed in a range W of at least 2ρ to 3ρ (here, ρ denotes a turning radius of a turning scroll) at (1) any one or both of inner peripheral end portions of high top lands (14H, 15H) of both scrolls and inner peripheral end portions of low bottom lands (14J, 15J) of the opposite scrolls corresponding to the inner peripheral end portions and (2) any one or both of outer peripheral end portions of high bottom lands (14K, 15K) of both the scrolls and outer peripheral end portions of low top lands (14I, 15I) of the opposite scrolls corresponding to the outer peripheral end portions, on the stepped portions (14F, 15F and 14G, 15G) of the top and bottom lands.

A light-weight, high-strength compressor component having at least one fluid delivery feature that is formed via additive manufacturing is provided. The component may have at least one interior region comprising a lattice structure that comprises a plurality of repeating cells. A solid surface is disposed over the lattice structure. The interior region comprising the lattice structure has at least one fluid delivery feature for permitting fluid flow through the body portion of the light-weight, high-strength compressor component. The fluid delivery feature may be a flow channel, a fluid delivery port, a porous fluid delivery feature, or the like that serves to transfer fluids through the component, such as refrigerant and/or lubricant oils. Methods of making such compressor components via additive manufacturing processes are also provided.

A scroll compressor with oil return unit, having a fixed spiral and an orbiting spiral, which compresses gas from a suction-pressure chamber into a high-pressure chamber. A counter-pressure chamber is connected to the orbiting spiral and the orbiting spiral presses onto the fixed spiral. The oil return unit has a counter-pressure spiral nozzle having a high-pressure channel connected to an end face for oil supply. A suction-pressure spiral nozzle with a suction-pressure channel connected to the end face discharges oil into the suction-pressure chamber. A counter-pressure channel is arranged between the counter-pressure spiral nozzle and the suction-pressure spiral nozzle for discharging oil into the counter-pressure chamber.

A scroll compressor prevents shortage of lubrication for sliding portions of a scroll unit. A scroll compressor 10 includes: an oil separator 100 that separates lubricant from the gaseous refrigerant discharged into a discharge chamber H3; a first lubricant chamber H5 that stores the lubricant separated by the oil separator 100; a first lubricant supply passage for supplying the lubricant in the first lubricant chamber H5 to a back pressure chamber H6; and a second lubricant supply passage for supplying the lubricant in the first lubricant chamber to a portion near an outer end portion of a scroll unit 50. The second lubricant supply passage is formed as a passage that allows the lubricant in the first lubricant chamber to flow through a second lubricant chamber H7 disposed above the first lubricant chamber H5 and connected to the first lubricant chamber H5 via an orifice OL3.

A scroll compressor includes a discharge port formed at a central portion thereof, a pair of two compression chambers continuously moving toward the discharge port, and a plurality of bypass portions formed at each interval along a movement path of each compression chamber in the both compression chambers. Compression gradients of the both compression chambers are different from each other. An interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval. The first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is smaller than the first interval of a first bypass portion belonging to the other compression chamber.

A hermetic scroll compressor has a symmetric wrap structure. The scroll compressor includes fixed and movable scrolls, a crank shaft, a motor, and a casing. The casing includes an oil reservoir, and a motor space serving as a low-pressure space. The fixed and movable scrolls define first and second compression chambers. The fixed scroll has a first passage to guide gas refrigerant in the low-pressure space to the first and second compression chambers. The movable scroll has a second passage to guide gas refrigerant in the low-pressure space to the first compression chamber. The gas refrigerant that has passed through the first and second passages flows into the first compression chamber. The gas refrigerant that has passed through the first passage also flows into the second compression chamber.

A scroll compressor including a casing; an orbiting scroll orbitingly moved inside the casing; a fixed scroll engaged with the orbiting scroll to form a pair of compression chambers; and a main frame supporting the orbiting scroll, wherein the fixed scroll includes a fixed scroll base plate and a fixed scroll wrap protruding from the fixed scroll base plate, wherein the main frame includes a main frame base plate provided on an opposite side of the fixed scroll base plate with respect to the orbiting scroll, and wherein the fixed scroll base plate, the main frame base plate and the casing may form an orbiting space of the orbiting scroll. An orbiting radius of the orbiting scroll is increased inside the casing having a predetermined size, so a refrigerant discharge amount is increased in a state in which the orbiting scroll and the fixed scroll are accommodated inside the casing.

A scroll compressor for compressing a gaseous fluid, in particular a refrigerant. The scroll compressor exhibits a non-moving stator with at least one outlet and a moving orbiter, each with a base plate and a spiral-shaped wall that extends from the base plate. The base plates are arranged relative to one another in such a way that the walls interlock with one another and closed working chambers are created. The volumes and the positions of the working chambers are changed in reaction to a rotary movement of the orbiter here.