Rotary compressor and air conditioner having the same
First Claim
Patent Images
1. A rotary compressor, comprising:
- a casing which defines an inner space, wherein a suction pipe and a discharge pipe are each coupled to the casing;
a driving motor installed in the inner space of the casing;
at least one cylinder provided in the inner space of the casing;
a plurality of bearing plates coupled to the cylinder so as to form a compression space with the cylinder, wherein the plurality of bearing plates are configured to support a rotation shaft of the driving motor;
at least one rolling piston coupled to an eccentric portion of the rotation shaft and in linear contact with an inner circumferential surface of the cylinder; and
at least one vane in contact with the rolling piston and configured to divide the compression space into a suction chamber and a compression chamber,wherein the driving motor includes;
a stator comprising a plurality of stator plates laminated together and configured to be inserted into an inner circumferential surface of the casing, each stator plate having a plurality of protruding poles on which a coil is wound;
a rotor comprising a plurality of rotor plates laminated together and configured to be rotatably disposed in the stator, wherein each rotor plate comprises a plurality of magnetic flux barriers formed therein, and wherein a width of each magnetic flux barrier in a radius direction and a width between adjacent magnetic flux barriers in the radius direction each increase towards the center of the driving motor; and
a rotation shaft coupled to the center of the rotor and.
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Abstract
A rotary compressor is provided which uses a synchronous reluctance motor to provide a driving force. The motor includes a rotor and a stator, each formed by a respective plurality of laminated steel plates. A plurality of magnetic flux barriers are formed on the steel plates which form the rotor, and a crystalline plastic film is disposed between the stator and a coil of the driving motor, the coil being implemented by an enamel coating layer. Accordingly, deformation of the rotor is decreased when the driving motor is assembled, and degradation of compressor performance due to slippage between the rotor and the stator is decreased, and heat emission of the rotor is decreased.
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Citations
44 Claims
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1. A rotary compressor, comprising:
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a casing which defines an inner space, wherein a suction pipe and a discharge pipe are each coupled to the casing; a driving motor installed in the inner space of the casing; at least one cylinder provided in the inner space of the casing; a plurality of bearing plates coupled to the cylinder so as to form a compression space with the cylinder, wherein the plurality of bearing plates are configured to support a rotation shaft of the driving motor; at least one rolling piston coupled to an eccentric portion of the rotation shaft and in linear contact with an inner circumferential surface of the cylinder; and at least one vane in contact with the rolling piston and configured to divide the compression space into a suction chamber and a compression chamber, wherein the driving motor includes; a stator comprising a plurality of stator plates laminated together and configured to be inserted into an inner circumferential surface of the casing, each stator plate having a plurality of protruding poles on which a coil is wound; a rotor comprising a plurality of rotor plates laminated together and configured to be rotatably disposed in the stator, wherein each rotor plate comprises a plurality of magnetic flux barriers formed therein, and wherein a width of each magnetic flux barrier in a radius direction and a width between adjacent magnetic flux barriers in the radius direction each increase towards the center of the driving motor; and a rotation shaft coupled to the center of the rotor and. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 44)
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42. A rotary compressor, comprising:
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a hermetic casing having an inner space to which a suction pipe and a discharge pipe are connected; a motor installed in the inner space of the casing, wherein the motor is configured to be synchronously rotated by a reluctance torque; at least one cylinder installed in the inner space, wherein the suction pipe is directly connected to the cylinder for compression of a fluid; a plurality of bearing plates coupled to the at least one cylinder so as to form a compression space and to support arotation shaft of the motor; at least one rolling piston coupled to an eccentric portion of the rotation shaft and in linear contact with an inner circumferential surface of the cylinder; and at least one vane in contact with the rolling piston and configured to divide the compression space into a suction chamber and a compression chamber, wherein the driving motor includes; a stator comprising a plurality of steel stator plates laminated together and configured to be inserted into an inner circumferential surface of the casing, each of the steel stator plates having a plurality of protruding poles on which a coil is wound; a rotor comprising a plurality of steel rotor plates laminated together and configured to be rotatably disposed in the stator, each of the plurality of steel rotor plates having a plurality of magnetic flux barriers formed therein, wherein a width of each magnetic flux barrier in a radius direction and a width between adjacent magnetic flux barriers in the radius direction each towards the center of the motor, and further comprising at least one bridge configured to connect an inner surface and an outer surface of at least one of the plurality of magnetic flux barriers; and a rotation shaft coupled to the center of the rotor and supported by a frame.
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43. A rotary compressor, comprising:
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a hermetic casing having an inner space to which a suction pipe and a gas discharge pipe are connected; a motor installed in the inner space and configured to be synchronously rotated by a reluctance torque; at least one cylinder provided in the inner space, at one side of the motor, wherein the suction pipe is directly connected to the cylinder so as to compress a fluid therein; a plurality of bearing plates coupled to the cylinder so as to form a compression space, wherein the plurality of bearing plates are configured to support a rotation shaft of the motor; at least one rolling piston positioned in the compression space of the cylinder, coupled to an eccentric portion of the rotation shaft and in linear contact with an inner circumferential surface of the cylinder; and at least one vane in contact with the rolling piston and configured to divide the compression space into a suction chamber and a compression chamber, wherein the motor includes; a stator comprising a plurality of steel stator plates laminated together and configured to be inserted into an inner circumferential surface of the casing, each of the plurality of steel stator plates having a plurality of protruding poles on which a coil is wound; a rotor comprising a plurality of steel rotor plates laminated together and configured to be rotatably disposed in the stator, the plurality of steel rotor plates having a plurality of magnetic flux barriers formed therein, wherein a width of each magnetic flux barrier in a radius direction and a width between adjacent magnetic flux barriers in the radius direction each increase towards the center of the motor, and wherein a width from an outer circumferential surface of each steel rotor plate to an end of each of the magnetic flux barriers is different; and a rotation shaft coupled to the center of the rotor by shrinkage fit and supported by a frame.
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Specification