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US 12,018,686 B2Granted
Rotary compressor
AssigneeLG Electronics Inc.
InventorsJinung Shin, SeSeok Seol, Sedong Lee
Life of this patent
Estimating the term…
Abstract
A rotary compressor is provided that may include a cylinder having an inner peripheral surface; a roller; and a plurality of vanes slidably inserted into the plurality of vane slots to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers. The cylinder may further include a suction flow path for refrigerant that may include a suction port that communicates with the compression space to suction the refrigerant in a lateral direction, and a suction passage disposed in a direction that crosses the suction port to provide communication between the compression space and the suction port.
Claims19
A vane rotary compressor, comprising:
- a cylinder having an inner peripheral surface formed in an annular shape to define a compression space;
- a roller rotatably disposed in the compression space of the cylinder, and including a plurality of vane slots at a predetermined interval along an outer peripheral surface, each providing a back pressure at one side thereof;
- a main bearing and a sub bearing provided at both ends of the cylinder, respectively, and spaced apart from each other to define surfaces of the compression space, respectively;
- and
- a plurality of vanes slidably inserted into the plurality of vane slots to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers, wherein the cylinder is provided with a suction flow path for refrigerant, the suction flow path comprising a suction port that communicates with the compression space to suction the refrigerant in a lateral direction, and a suction passage disposed in a direction that crosses the suction port to provide communication between the compression space and the suction port, wherein the refrigerant passes through the suction port and the suction passage to flow into the compression space, wherein a suction guide, which is concavely defined to provide communication between the suction passage and the compression space and configured to accommodate refrigerant that has passed through the suction passage, is provided in at least one of the main bearing or the sub bearing, wherein the suction guide has a first side disposed adjacent to an inner circumference of the cylinder adjacent a proximal point, the proximal point being a point at which an outer peripheral surface of the roller and the inner circumference of the cylinder make contact and a second side disposed opposite to the first side and configured to communicate with at least a portion of the suction passage, wherein the first side and the second side are each formed as a curved surface, wherein a radius of the second side is larger than a radius of the first side, and wherein the suction guide is asymmetrical with respect to a radial direction of the cylinder.
2 more elements
A vane rotary compressor, comprising:
- a casing;
- a drive motor provided inside of the casing to generate a rotational power;
- a cylinder having an inner peripheral surface formed in an annular shape to define a compression space;
- a roller rotatably provided in the compression space of the cylinder, and having a plurality of vane slots at a predetermined interval along an outer peripheral surface, each providing a back pressure at one side thereof;
- a plurality of vanes slidably inserted into the plurality of vane slots to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers;
- and
- a main bearing and a sub bearing provided at both ends of the cylinder, respectively, and spaced apart from each other to define surfaces of the compression space, respectively, wherein the cylinder is provided with a suction flow path for refrigerant, the suction flow path comprising a suction port disposed to communicate with the compression space to suction the refrigerant in a lateral direction, and a suction passage disposed in a direction that crosses the suction port to provide communication between the compression space and the suction port, wherein the refrigerant passes through the suction port and the suction passage to flow into the compression space, wherein an inlet guide is provided on at least one of two surfaces connected to an inner circumference of the cylinder, wherein the inlet guide is formed by the at least one of the two surfaces connected to the inner circumference of the cylinder being cut off so as to be concave in a direction that crosses the suction port to allow refrigerant flowing in the suction passage to flow into the compression space, and wherein a central longitudinal axis of the inlet guide extends parallel to a central longitudinal axis of the suction port.
4 more elements
A vane rotary compressor, comprising:
- a cylinder having an inner peripheral surface defining a compression space;
- a roller rotatably disposed in the compression space of the cylinder, and including a plurality of vane slots at a predetermined interval along an outer peripheral surface, each providing a back pressure at one side thereof;
- a main bearing and a sub bearing provided at both ends of the cylinder, respectively, and spaced apart from each other to define surfaces of the compression space, respectively;
- and
- a plurality of vanes slidably inserted into the plurality of vane slots to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers, wherein the cylinder is provided with a suction flow path for refrigerant, the suction flow path comprising a suction port that communicates with the compression space to suction the refrigerant in a lateral direction, and a suction passage that provides communication between the compression space and the suction port, wherein the refrigerant passes through the suction port and the suction passage to flow into the compression space, wherein a suction guide, which is concavely defined to provide communication between the suction passage and the compression space and configured to accommodate refrigerant that has passed through the suction passage, is provided in at least one of the main bearing or the sub bearing, wherein the suction guide has a first side disposed adjacent to an inner circumference of the cylinder and disposed to face a proximal point, the proximal point being a point at which an outer peripheral surface of the roller and the inner circumference of the cylinder make contact and a second side disposed opposite to the first side and configured to communicate with at least a portion of the suction passage, wherein the first side is longer than the second side, and wherein the suction guide is asymmetrical with respect to a radial direction of the cylinder.
2 more elements
Dependencies are inferred from the claim text.