Compressor with lubrication structure
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsTomohiro Murakami, Sokichi Hibino, Atsuyuki Morishita
Life of this patent
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Abstract
A supply passage is formed in a rotary shaft along the axis thereof. An expansion passage is formed in the rotary shaft in such a way as to be led to the supply passage. A pair of fluid passages are formed in the rotary shaft in such a way as to communicate with the expansion passage. The fluid passages extend in a direction orthogonal to the axis and the outlet ports of the fluid passages are open to the outer surface of the rotary shaft. The fluid passages extend from the expansion passage to a control pressure chamber, penetrating through the rotary shaft.
Claims20
A compressor with a lubrication structure, comprising:
- a rotary shaft;
- a piston;
- a driving body accommodating chamber;
- a driving body accommodated in the driving body accommodating chamber, wherein the driving body converts rotation of the rotary shaft into reciprocation of the piston, thereby causing the piston to compress gas;
- a gas passage that extends through the rotary shaft and communicates with the driving body accommodating chamber, wherein the gas passage includes an expansion portion;
- and
- a fluid passage that extends through the rotary shaft to connect the expansion portion with the driving body accommodation chamber,
- wherein the maximum cross-sectional area of the expansion portion is greater than the maximum cross-sectional area of a section of the gas passage that is upstream of the expansion portion.
A compressor with a lubrication structure, comprising:
- a rotary shaft;
- a piston;
- a swash plate chamber;
- a swash plate that is accommodated in the swash plate chamber and supported on the rotary shaft, wherein the swash plate converts rotation of the rotary shaft into reciprocation of the piston, thereby causing the piston to compress refrigerant, the refrigerant containing lubricating oil;
- a refrigerant passage extending through the rotary shaft, wherein the refrigerant passage includes an inlet, which communicates with the swash plate chamber, and an expansion portion;
- and
- a fluid passage that formed in the rotary shaft in a radial direction to connect the expansion portion with the swash plate chamber,
- wherein the maximum cross-sectional area of the expansion portion is greater than the maximum cross-sectional area of a section of the refrigerant passage that is upstream of the expansion portion.
Dependencies are inferred from the claim text.