A compressor includes first and second scroll members and a bearing housing. The first scroll member includes a first end plate and a first scroll wrap. The second scroll member includes a second end plate that has a first surface, a second surface, and an oil passage. The first surface has a second scroll wrap meshingly engaging the first scroll wrap. The second surface includes an oil slot. The oil passage is in fluid communication with the oil slot. The bearing housing cooperates with the second scroll member to define an interior volume. The second scroll member is movable between a first position in which lubricant in the interior volume is allowed to flow into the oil passage via the oil slot, and a second position in which working fluid in the chamber is allowed to flow into the oil passage via the oil slot.

The present disclosure discloses a fixed scroll and a scroll compressor with the same. The fixed scroll includes: an end plate; a fixed scroll wrap protruding from one surface of the end plate; and an internal cavity formed in the end plate. By adopting the fixed scroll and the scroll compressor with the fixed scroll according to the embodiment of the present disclosure, a weight of the scroll compressor may be reduced for example.

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 includes: a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved; a fixed scroll stored in the shell; an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll; a frame holding the orbiting scroll; a thrust plate disposed between the orbiting scroll and the frame; and a thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, in which: a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; and the thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does not protrude from the first surface portion of the thrust plate.

A compressor includes a first scroll and a second scroll engaged with the first scroll for performing an orbiting motion relative to the first scroll to form a compression chamber along with the first scroll. A stator is disposed at one side of the second scroll and includes a stator core. A rotor is rotatably disposed inside the stator core, and includes a rotor core. A rotary shaft has one end portion eccentrically coupled to the second scroll and the other end portion coupled to the rotor core. The rotor core is formed with at least one space portion axially recessed into the rotor core.

A scroll compressor includes a fixed scroll and an orbiting scroll. The orbiting scroll includes an orbiting volute wall. The orbiting volute wall is shaped to form an involute and to have a thickness. The orbiting volute wall includes a thin section in which the thickness is less than those in adjacent sections. The thin section includes a region corresponding to an involute angle that is obtained by subtracting 360° from a maximum of the involute angle.

An aluminum alloy for sliding components contains 8.0-11.5% by mass of Si, 0.7-1.2% by mass of Cu, 0.2-0.6% by mass of Mg, 0.30-0.60% by mass of Mn, 0.10-0.30% by mass of Fe, 0.01-0.03% by mass of Cr, and balance Al with inevitable impurities, in which a tensile strength at 25° C. is within a range of 330 MPa or more and 380 MPa or less, the aluminum alloy does not contain, per 1182 μm.sup.2, two or more crystallized products containing 1% by mass or more of Cu and having a circle equivalent diameter exceeding 5 μm, and the aluminum alloy does not contain, per 1182 μm.sup.2, two or more Cr-containing intermetallic compounds having a length of 8 μm or more, and does not contain, per 4726 μm.sup.2, two or more primary crystal Si particles having a circle equivalent diameter exceeding 10 μm.

A scroll compressor includes: a shell forming an outer case, a fixed scroll and an orbiting scroll stored in the shell, a frame holding the orbiting scroll, a thrust plate between the orbiting scroll and the frame, and a thrust oil return pipe fixed to the frame. The shell forms an oil reservoir in which lubricating oil is reserved. The orbiting scroll and fixed scroll form a compression chamber. Lubricating oil flows through the thrust oil return pipe to return to the oil reservoir. A hole portion on the thrust plate passes from a first surface portion that slidably contacts the orbiting scroll to a second surface portion facing the frame. The thrust oil return pipe is inserted into the hole portion and fits in the thrust plate. An upper end portion of the thrust oil return pipe does not protrude from the first surface portion of the thrust plate

A compressor includes first and second scroll members and a bearing housing. The first scroll member includes a first end plate and a first scroll wrap. The second scroll member includes a second end plate that has a first surface, a second surface, and an oil passage. The first surface has a second scroll wrap meshingly engaging the first scroll wrap. The second surface includes an oil slot. The oil passage is in fluid communication with the oil slot. The bearing housing cooperates with the second scroll member to define an interior volume. The second scroll member is movable between a first position in which lubricant in the interior volume is allowed to flow into the oil passage via the oil slot, and a second position in which working fluid in the chamber is allowed to flow into the oil passage via the oil slot.

A compressor may include first and second scrolls, a hub plate and a valve member. The first scroll includes an end plate having a primary discharge passage and a secondary discharge passage. The secondary discharge passage is disposed radially outward from the primary discharge passage. The hub plate is mounted to the first scroll and has a hub discharge passage extending therethrough. The hub discharge passage is in fluid communication with the primary discharge passage. The valve member is movable between open and closed positions. The valve member restricts fluid flow through the secondary discharge passage when in the closed position to restrict fluid communication between the secondary discharge passage and the hub discharge passage. The valve member allows fluid flow through from the secondary discharge passage when in the open position to allow fluid communication between the secondary discharge passage and the hub discharge passage.