Abstract:
Spiral fixed scroll teeth (2a) project from an end plate (2b) of a fixed scroll (2), and spiral movable scroll teeth (4a) project from an end plate (4b) of a movable scroll (4). The end plate (4b) of the movable scroll (4) is provided with a discharge port (8) for discharging compressed refrigerant gas. A pressure chamber (16) is provided on the back surface of the end plate (2b). A port (10) communicating with the pressure chamber (16) is provided on a position of the end plate (2b) opposed to the discharge port (8). Thus obtained is a scroll compressor reducing pulsation when discharging a fluid by feeding the compressed fluid into the pressure chamber.
Abstract:
A scroll-type fluid displacement machine includes first (2) and second (6) scroll bodies that rotate synchronously together, their rotation axes being offset from one another. A cylindrical partition wall (4a) is provided to extend axially in the center of the scroll bodies. A space is provided between scroll vanes of the scroll bodies and the cylindrical partition wall. The interior of the cylindrical partition wall is cooled by air ventilation, and a grease-lubricated Oldham coupling (13,14,15) is disposed inside the cylindrical partition wall. Hence, the Oldham coupling that is made of a metal is prevented from wear and deformation thereof over a long time. The displacement machine requires neither a counterweight nor a pin-crank device. The machine may be oil-free in the fluid compression part of the scroll bodies.
Abstract:
A scroll type fluid machinery which is provided with: a first scroll (1) and a second scroll (2) which moves with respect to the first scroll, where the base (11) of the first scroll is provided with suction bores (9) perforating through the base from the rear surface thereof to the front surface, and open at the outer peripheral portion of the front surface of the base (11), so that fluid released into an internal space (70) of the body casing passes through the suction bores, and into the suction sides of the compression volumes formed between spiral members (12, 22) of the scrolls, whereby suction pressure in the compression volumes is maximized and volumetric efficiency is improved.
Abstract:
A rotating type scroll compressor according to the present invention having a closed shell (1) that houses an electric drive member (2) and a scroll compressing member (3), the scroll compressing member having a drive scroll member (14) and a follower scroll member (15), the drive scroll member having a spiral shape lap (17) formed on a end plate (16) and being driven by the electric drive member, the follower scroll member having a center axial line that deviates from a center axial line of the drive scroll member and a spiral shape lap (21) fitting to the lap of the drive scroll member, said rotating type scroll compressor comprising rotating shaft portions (53) to which radial force of the rotating drive scroll member and the follower scroll member is applied, said rotating shaft portions being disposed at an upper portion and a lower portion of the laps to which the radial load of fluid is applied.
Abstract:
A compressor includes first and second scroll members (76; 78), first and second bearing housings (14;16), and a motor assembly (20). The first scroll member (76) includes a first end plate (80) and a first spiral wrap (82) extending from the first end plate (80). The second scroll member (78) includes a second end plate (86) and a second spiral wrap (88) extending from the second end plate (86) and intermeshed with the first spiral wrap (82) to define compression pockets (122) therebetween. The first bearing housing (14) supports the first scroll member (76) for rotation about a first rotational axis (A1). The second bearing housing (16) supports the second scroll member (78) for rotation about a second rotational axis (A2) that is parallel to and offset from the first rotational axis (A1). The motor assembly (20) is disposed axially between the first and second bearing housings (14;16) and includes a rotor (100) attached to the first scroll member (76). The rotor (100) surrounds the first and second end plates (80;86).
Abstract:
An upper back pressure type scroll compressor (100) having a bypass is provided. The scroll compressor (100) may include a casing (110), a discharge cover (102), a main frame (120), a first scroll (130) supported by the main frame (120), and a second scroll (140) that forms a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the first scroll (130). The second scroll (140) may include a bypass hole (149) that communicates with the intermediate pressure chamber. The scroll compressor (100) may also include a back pressure chamber assembly coupled to an upper portion of the second scroll (140) by a fastening device (106) and a bypass valve (124) to open and close the bypass hole (149). The back pressure chamber assembly may include a discharge path (158d; 158e) by which the discharge chamber and the discharge space (D) may communicate with each other and a bypass valve (124) to open and close the bypass hole (149).
Abstract:
This microsystem for converting a pressure difference in a fluid into a mechanical displacement comprises at least one reinforcement (70-73) on one side, fixed to at least one plane and, on the other side, fixed or resting slidingly with a distal portion (16, 17) of a part (12, 14) that is mobile to limit its deformation in a transverse direction perpendicular to a longitudinal direction of displacement.