Scroll compressor

Abstract

The present invention provides a scroll compressor in which check valves are arranged neatly and miniaturized for realizing high efficiency and low cost. In the scroll compressor, a central part is provided with an exhaust path which is communicated with an exhaust chamber (13); a first compression chamber (11a) and a second compression chamber (11b) are respectively provided with a first bypass path (28) and a second bypass path (29) which are communicated with the exhaust chamber in the middle part of compression. The first bypass path and the second bypass path are respectively composed of at least one hole. The exhaust path and each bypass path are respectively provided with a check valve (24). The bypass path of the compression chamber at the outer wall side of a scroll has a smaller number of the holes and larger area of the hole compared with a bypass path of the compression chamber at the inner wall side of the scroll. The holes on the first bypass path and the second bypass path are set parallelly as possible. The check valves are arranged neatly for obtaining high compactness, small size and cost reduction. The coexistence of high efficiency and low cost is obtained.

Description

technical field [0001] The present invention relates to a scroll compressor used in air conditioners, refrigerators, blowers, water heaters and other machines. Background technique [0002] In the existing scroll compressor, the fixed scroll and the movable scroll, which form scroll wraps on the mirror plate, mesh with each other to form a plurality of compression chambers, and a crankshaft with an eccentric portion is connected to the movable scroll. The coupling prevents rotation and performs rotational movement, and continuously compresses while gradually reducing the volume toward the center. The existing scroll compressor has the following characteristics. The suction chamber is located at the outer periphery of the scroll forming the compression space, and the discharge hole is provided at the center of the scroll. The volume at the end of suction and the volume at the end of compression are determined. Set the compression ratio to be constant. Therefore, for an oper...

AI Technical Summary

Problems solved by technology

[0016] In the conventional structure, the discharge hole and the three check valves on each bypass path were distributed, causing many problems, such as: increased discharge loss due to the interference of the outflow gas from the check valve; covering the check valve The cost increases due to the increase in the size of the isolation parts, etc., but with this structure, not only can the fluid be reliably bypassed to the discharge chamber during excessive compression operation to reduce the discharge loss, but also the first bypass path and the second bypass path can be separated. The arrangement of the holes in the passageway should be arranged in parallel as much as possible, so that the check valves can be neatly arranged and made more compact. Therefore, the discharge loss can be reduced by suppressing the interference of the outflow gas from the check valve, and it can also be achieved by making the cover Cost reduction due to miniaturization of isolation parts of the check valve

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