Vane rotary compressor
AssigneeLG Electronics Inc.
InventorsJoonhong Park, Seoungmin Kang, Jinung Shin
Life of this patent
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Abstract
A rotary compressor may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller having at least one vane slot and a back pressure chamber, and at least one vane. The roller may include at least one spring insertion groove formed in an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot, and a vane spring that supports a rear surface of the vane toward an inner circumferential surface of the cylinder may be disposed in the at least one spring insertion groove. Accordingly, elastic force may be supplied to the rear surface of the vane, to suppress or prevent trembling of the vane caused while the vane passes through a proximal portion during operation.
Claims20
A vane rotary compressor, comprising:
- a casing;
- a cylinder fixed to an inner space of the casing to define a compression space;
- a main bearing and a sub bearing disposed, respectively, on both sides of the cylinder in an axial direction;
- a rotational shaft inserted through the cylinder to be supported on the main bearing and the sub bearing;
- a roller disposed on the rotational shaft, having an outer circumferential surface that is eccentric with respect to an inner circumferential surface of the cylinder, and provided with at least one vane slot open toward the outer circumferential surface;
- and
- a vane slidably inserted into the at least one vane slot, a front surface of the vane coming in contact with the inner circumferential surface of the cylinder to partition the compression space into a plurality of compression chambers, wherein the roller comprises:
- a roller body having at least one spring insertion groove formed at an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot;
- and
- a vane spring inserted into the at least one spring insertion groove to support a rear surface of the at least one vane toward the inner circumferential surface of the cylinder, wherein at least a portion of the at least one spring insertion groove overlaps the at least one vane slot in the axial direction, wherein the at least one vane comprises a spring support portion formed at a position overlapping the at least one spring insertion groove, and wherein the spring support portion is stepped by a predetermined depth from a first axial side surface connected to a rear surface of the vane toward a second axial side surface.
The vane rotary compressor of claimer 1, wherein the main bearing or the sub bearing includes a discharge port through which refrigerant of a compression chamber is discharged into the inner space of the casing, and wherein the spring support portion is formed on an axial side surface facing the bearing having the discharge port.
A vane rotary compressor, comprising:
- a casing;
- a cylinder fixed to an inner space of the casing to define a compression space;
- a main bearing and a sub bearing disposed, respectively, on both sides of the cylinder in an axial direction;
- a rotational shaft inserted through the cylinder to be supported on the main bearing and the sub bearing;
- a roller disposed on the rotational shaft, having an outer circumferential surface that is eccentric with respect to an inner circumferential surface of the cylinder, and provided with at least one vane slot open toward the outer circumferential surface;
- and
- a vane slidably inserted into the at least one vane slot, a front surface of the vane coming in contact with the inner circumferential surface of the cylinder to partition the compression space into a plurality of compression chambers, wherein the roller comprises:
- a roller body having at least one spring insertion groove formed at an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot;
- and
- a vane spring inserted into the at least one spring insertion groove to support a rear surface of the at least one vane toward the inner circumferential surface of the cylinder, wherein the roller body comprises:
- a first roller body defining a first axial side surface;
- and
- a second roller body defining a second axial side surface and coupled to one side of the first roller body in the axial direction, and wherein the at least one spring insertion groove comprises a first spring insertion groove formed in the first roller body and a second spring insertion groove formed in the second roller body.
Dependencies are inferred from the claim text.