Improved vent hole of scroll compressor

Abstract

The invention relates to an improved vent hole of a scroll compressor, belonging to the technical field of scroll compressors and aiming at providing an improved vent hole of a scroll compressor, which can reduce the clearance volume of the scroll compressor and enable the orbiting and fixed scrolls to delay disengagement. The improved vent hole is technically characterized in that the vent hole (2) is arranged vertically between the base plate (3) of the fixed static scroll and the lower part of a gear wall (1), one part of the hole is arranged inside the scroll gear wall, and the other part is arranged outside the scroll gear wall. The improved vent hole can greatly reduce the clearance volume of the scroll compressor, actually correct the gear end based on the target of zero clearance volume, greatly raise the volumetric efficiency, lower the power consumption, and obviously improve the performance coefficients of the complete machine.

Description

Technical field [0001] The invention relates to an improved exhaust hole of a scroll compressor, belonging to the technical field of scroll compressors. Background technique [0002] At present, the exhaust holes of scroll compressors are generally completely opened on the bottom plate, see figure 1 . This kind of exhaust hole 2 completely opened on the bottom plate 3, without considering the clearance volume produced by the exhaust hole, although theoretically there is no clearance for the tooth end correction, but because of this kind of exhaust hole Objectively, there is a relatively large clearance volume in the opening of the gear end, and the method of tooth end correction is affected by the exhaust hole factors and mutually restricts each other. Therefore, it cannot be realized in actual production: the disengagement of the moving and static scrolls 5 and 4 At that time, a large part of the high-temperature and high-pressure gas cannot be discharged due to the invalid vol...

AI Technical Summary

Problems solved by technology

This kind of exhaust hole 2 completely opened on the bottom plate 3, under the premise of disregarding the clearance volume generated by the exhaust hole, although theoretically there is no clearance in tooth end correction, but due to this exhaust hole Objectively, there is a large clearance volume, and the correction method of the tooth end is affected by the exhaust hole factors and restricts each other, so it cannot be realized in actual production: when the movable and static scrolls 5 and 4 are disengaged When the center exhaust chamber has an invalid volume, that is, the clearance volume, a large part of the high-temperature and high-pressure gas cannot be discharged. The high-temperature and high-pressure gas remaining in this part can only participate in the next compression and exhaust, thereby increasing the compression. The power consumption of the process greatly reduces the energy efficiency ratio of the compressor and reduces the stability of the exhaust process

Therefore, this kind of correction method commonly used in engineering, even if the optimization of the line shape optimization and tooth end correction method delays disengagement, because the exhaust hole cannot be further reduced, the center exhaust chamber will pass through the exhaust hole before the tooth end disengages. The air hole communicates with the latter compression chamber (see figure 2 shown), which still causes the compression and exhaust process to end prematurely, and the clearance volume cannot be further reduced

During this process, the fixed scroll slide is affected by the exhaust hole, and the tooth end avoids the exhaust hole. When the movable scroll tooth end reaches the end of the slide, the leakage will increase significantly, which also directly affects the compression. machine performance

Moreover, a huge safety hazard is left. When the compressor is reversed, the tooth end of the movable scroll is easy to hit the tooth end of the fixed scroll slide, which eventually leads to the scrapping of the compressor.

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