Scroll compressor

Abstract

The invention provides an effective scroll compressor with high reliability which solves the leakage of a compression chamber from the compression chamber to a suction chamber in a compressing process and from the starting of the compression to the ending, and does not cause a low performance. The scroll compressor comprises an inclined plane with reduced height of scroll teeth of a rotary scroll plate of which a clearance on a thrust direction gradually increases from an inner circle to an outer circle between the upper surface of the scroll teeth of the rotary scroll plate and a groove bottom surface of the scroll teeth of a fixed scroll plate, and in a range of maximum 180 DEG from the outer circle ending part on the upper surface of the scroll teeth of the rotary scroll plate, and an oil supplying hole formed with an opening on the inclined plane. The clearance between the oil supplying hole and the groove bottom surface of the scroll teeth of the fixed scroll plate is easily adjusted because of the inclination of the upper surface of the scroll teeth so as to supply the oil supplied by the oil supplying hole according to the needed minimum amount. The oil is evenly supplied by the oil supplying hole at the beginning of the compression, thereby improving the sealing performance.

Description

technical field [0001] The present invention relates to a scroll compressor used in air conditioners, heat pump water heaters and the like. Background technique [0002] In the scroll compressor, the spiral scroll teeth are erected from the mirror plate to form a fixed scroll and an orbiting scroll, and the fixed scroll and the orbiting scroll mesh with each other, and the orbiting scroll is sandwiched between A compression mechanism is formed between the fixed scroll and the main bearing, and the orbiting scroll moves along a circular orbit driven by a driving mechanism such as a motor. With such a structure, the compression chambers that are alternately formed between the fixed scroll and the orbiting scroll, on both sides of the orbiting scroll inner ring side and the outer ring side of the orbiting scroll, move from the outer ring to the center. During the process, it gradually becomes smaller, and the low-pressure gas is sucked in from the suction chamber on the outer ...

AI Technical Summary

Problems solved by technology

Therefore, although the oil can be supplied near the compression chamber in the middle of the compression process when the compression has progressed to a certain degree, the process part where the compression chamber seals the low-pressure gas sucked from the suction chamber and the process part just after the compression starts That is, the vicinity of the compression chamber of the outer ring that communicates with the suction chamber is not supplied with oil

In this way, the oil sealing effect cannot be exerted near the compression chamber on the outer ring side that communicates with the suction chamber, and leakage from the compression chamber to the suction chamber side will occur during the process of sealing low-pressure gas, and the compression capacity will be reduced; Leakage occurs between the compression chambers during the start of compression, requiring an increase in input power, etc.

Any of the above situations lead to poor performance

[0006] In particular, when a high-pressure fluid such as carbon dioxide is used as the working fluid, the pressure becomes very high immediately after the compression. Therefore, if the above-mentioned existing structure is adopted, the loss caused by leakage, backflow, etc. is particularly large, and there is no performance Greatly reduces the problem

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