Rotary compressor and refrigeration cycle device having the same
AssigneeLG Electronics Inc.
InventorsKiyoul NOH, Yunhi Lee, Seheon Choi
Life of this patent
Estimating the term…
Abstract
Disclosed are a rotary compressor and a refrigeration cycle device having the same. The rotary compressor and the refrigeration cycle device having the same may include a casing, a main bearing, a sub bearing, a cylinder, a roller, a vane, and an injection passage, and the injection passage may be disposed in at least one selected from the main bearing, the sub bearing, and the cylinder to communicate with a corresponding compression chamber after a compression start angle of the corresponding compression chamber. Thus, a maximum injection section may be secured, while a refrigerant being injected may be suppressed from being leaked toward a suction port.
Claims20
A rotary compressor comprising:
- a casing;
- a main bearing and a sub bearing each disposed in an inner space of the casing;
- a cylinder disposed between the main bearing and the sub bearing to define a compression space;
- a roller disposed on a rotating shaft to be rotatable in an inner space of the cylinder and eccentrically located with respect to a center of the compression space to have a contact point close to an inner circumferential surface of the cylinder;
- a plurality of vanes slidably inserted into a plurality of vane slots disposed in the roller, respectively, and configured to rotate together with the roller to divide the compression space into a plurality of compression chambers;
- and
- an injection passage configured to inject a part of refrigerant having been discharged from the compression space and condensed into the compression space,
- wherein the injection passage is disposed in at least one among the main bearing, the sub bearing, and the cylinder to communicate with a corresponding compression chamber among the plurality of compression chambers, after a compression start angle of the corresponding compression chamber.
A refrigeration cycle device comprising a compressor, a condenser, an expander, and an evaporator, and having a rotary compressor applied to the refrigeration cycle device,
- wherein the compressor comprises:
- a casing;
- a main bearing and a sub bearing each disposed in an inner space of the casing;
- a cylinder disposed between the main bearing and the sub bearing to define a compression space;
- a roller disposed on a rotating shaft to be rotatable in the inner space of the cylinder and eccentrically located with respect to a center of the compression space to have a contact point close to an inner circumferential surface of the cylinder;
- a plurality of vanes slidably inserted into a plurality of vane slots disposed in the roller, respectively, and configured to rotate together with the roller to divide the compression space into a plurality of compression chambers;
- and
- an injection passage configured to inject a part of refrigerant having been discharged from the compression space and condensed into the compression space,
- wherein the injection passage is disposed in at least one among the main bearing, the sub bearing, and the cylinder to communicate with a corresponding compression chamber among the plurality of compression chambers, after a compression start angle of the corresponding compression chamber.
Dependencies are inferred from the claim text.