Compressor
First Claim
1. A compressor, comprising:
- a hermetic container that stores oil;
a stator fixed in the hermetic container;
a first stationary member including a stationary shaft having a top end immovably installed in the hermetic container and being elongated into the hermetic container, and an eccentric portion eccentrically formed on the stationary shaft;
a second stationary member spaced apart from a bottom end of the stationary shaft and immovably installed at a lower portion of the hermetic container;
a rotary member located between the stator and the first stationary member, rotated around the first stationary member by a rotating electromagnetic field from the stator, to compress refrigerant sucked into a compression space defined therein, rotatably supported by the second stationary member to apply a load to the second stationary member, and including upper and lower bearing covers that enclose a portion of the stationary shaft to form upper and lower portions of the compression space, the upper and lower bearing covers rotating around the stationary shaft with the rotary member, wherein a portion of the lower bearing cover is fitted between the stationary shaft and the second stationary member, the lower bearing cover being rotatably supported with respect to the stationary shaft and the second stationary member, and the stationary shaft being immovably fixed with respect to the second stationary member, wherein the rotary member comprises;
a cylinder type rotor rotatably supported on the first and second stationary members to rotate around the stationary shaft by a rotating electro electromagnetic field from the stator;
a roller applied with a rotational force of the cylinder-type rotor, rotated around the eccentric portion with the cylinder-type rotor, to define a compression space between the roller and the cylinder-type rotor;
a vane that transfers the rotational al force from the cylinder-type rotor to the roller and partitions the compression space into a suction pocket, into which the refrigerant is sucked, and a compression pocket, in and from which the refrigerant is compressed and discharged;
a vane mounting hole integrally formed with the roller to protrude from an outer circumferential surface of the roller toward the cylinder-type rotor so as to accommodate the vane andthe upper and lower bearing covers;
a lubrication passage that guides the oil stored in the hermetic container to portions of the rotary member and the first stationary member or the second stationary member, which are brought into bearing-contact, by using a rotation force of the lower bearing cover; and
an oil supply hole that enables a portion of the vane mounting hole to communicate with an inner space of the hermetic container such that the oil in the inner space is supplied to the vane mounting hole.
1 Assignment
0 Petitions
Accused Products
Abstract
A compressor is provided in which a rotary member suspended on a stationary member is rotated to compress a refrigerant. As the rotary member is suspended on a first stationary member and rotatably supported on a second stationary member spaced apart from the first stationary member, components can be easily centered and assembled with structural stability. In addition, oil stored in a hermetic container is supplied to a lubrication passage provided between the rotary member and the stationary member. This reduces friction loss between the components and achieves operational reliability. Moreover, the oil is easily introduced into a vane mounting hole in which a vane is linearly reciprocated. This reduces friction and abrasion of the vane and improves the operational reliability.
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Citations
10 Claims
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1. A compressor, comprising:
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a hermetic container that stores oil; a stator fixed in the hermetic container; a first stationary member including a stationary shaft having a top end immovably installed in the hermetic container and being elongated into the hermetic container, and an eccentric portion eccentrically formed on the stationary shaft; a second stationary member spaced apart from a bottom end of the stationary shaft and immovably installed at a lower portion of the hermetic container; a rotary member located between the stator and the first stationary member, rotated around the first stationary member by a rotating electromagnetic field from the stator, to compress refrigerant sucked into a compression space defined therein, rotatably supported by the second stationary member to apply a load to the second stationary member, and including upper and lower bearing covers that enclose a portion of the stationary shaft to form upper and lower portions of the compression space, the upper and lower bearing covers rotating around the stationary shaft with the rotary member, wherein a portion of the lower bearing cover is fitted between the stationary shaft and the second stationary member, the lower bearing cover being rotatably supported with respect to the stationary shaft and the second stationary member, and the stationary shaft being immovably fixed with respect to the second stationary member, wherein the rotary member comprises; a cylinder type rotor rotatably supported on the first and second stationary members to rotate around the stationary shaft by a rotating electro electromagnetic field from the stator; a roller applied with a rotational force of the cylinder-type rotor, rotated around the eccentric portion with the cylinder-type rotor, to define a compression space between the roller and the cylinder-type rotor; a vane that transfers the rotational al force from the cylinder-type rotor to the roller and partitions the compression space into a suction pocket, into which the refrigerant is sucked, and a compression pocket, in and from which the refrigerant is compressed and discharged; a vane mounting hole integrally formed with the roller to protrude from an outer circumferential surface of the roller toward the cylinder-type rotor so as to accommodate the vane and the upper and lower bearing covers; a lubrication passage that guides the oil stored in the hermetic container to portions of the rotary member and the first stationary member or the second stationary member, which are brought into bearing-contact, by using a rotation force of the lower bearing cover; and an oil supply hole that enables a portion of the vane mounting hole to communicate with an inner space of the hermetic container such that the oil in the inner space is supplied to the vane mounting hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification