Crankshaft, compressor, and refrigeration device
AssigneeAnhui Meizhi Compressor Co., Ltd.
InventorsChengcheng Wang, Gang Huang, Dongdong Song
Life of this patent
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Abstract
A crankshaft is provided. The crankshaft has a first shaft, a second shaft and a first crank arm. A first oil passage is formed in the first shaft along an axis direction of the shaft. A second oil passage is formed in the second shaft along an axis direction of the shaft. The first crank arm is configured to be connected between the first shaft and the second shaft. The first crank arm is provided with a third oil passage. The third oil passage is configured to communicate the first oil passage and the second oil passage. The second shaft is eccentrically provided relative to the axis of the first shaft. A compressor having the crankshaft and a refrigeration device having the compressor are also provided.
Claims18
A crankshaft comprising:
- a first shaft that forms a first oil passage along an axis of the first shaft;
- a second shaft that forms a second oil passage along an axis of the second shaft;
- a first crank arm disposed between the first shaft and the second shaft that forms a third oil passage in communication with the first oil passage and the second oil passage,
- wherein:
- the first shaft comprises a thin-walled portion and a thick-walled portion;
- the axis of the second shaft is offset from the axis of the first shaft;
- and
- the first shaft is oriented relative to the second shaft such that a direction of the offset goes through the thick-walled portion;
- and
- a second crank arm disposed between the second shaft and the first crank arm that forms a fourth oil passage in communication with the second oil passage and the third oil passage.
A crankshaft comprising:
- a first shaft that forms a first oil passage along an axis of the first shaft;
- a second shaft that forms a second oil passage along an axis of the second shaft;
- and
- a first crank arm disposed between the first shaft and the second shaft that forms a third oil passage in communication with the first oil passage and the second oil passage,
- wherein:
- the first shaft comprises a thin-walled portion and a thick-walled portion;
- the axis of the second shaft is offset from the axis of the first shaft;
- the first shaft is oriented relative to the second shaft such that a direction of the offset goes through the thick-walled portion;
- an inner profile of the thin-walled portion includes a first circular arc and an inner profile of the thick-walled portion includes a second circular arc;
- and
- the first circular arc and the second circular arc are concave towards the axis of the first shaft.
A crankshaft comprising:
- a first shaft that forms a first oil passage along an axis of the first shaft;
- a second shaft that forms a second oil passage along an axis of the second shaft;
- and
- a first crank arm disposed between the first shaft and the second shaft that forms a third oil passage in communication with the first oil passage and the second oil passage,
- wherein:
- the first shaft comprises a thin-walled portion and a thick-walled portion;
- the axis of the second shaft is offset from the axis of the first shaft;
- the first shaft is oriented relative to the second shaft such that a direction of the offset goes through the thick-walled portion;
- an inner profile of the thin-walled portion includes a first circular arc;
- an inner profile of the thick-walled portion includes a second circular arc;
- and
- one of the first circular arc and the second circular arc opens towards the axis of the first shaft and another of the first circular arc and the second circular arc opens away from the axis of the first shaft.
Dependencies are inferred from the claim text.