Scroll compressor and heat pump system

Abstract

The invention provides a scroll compressor and a heat pump system. The scroll compressor comprises a casing (1), a fixed scroll plate (2) and an air suction pipe (3); the air suction pipe (3) is arranged on the casing (1); the fixed scroll plate (2) is provided with an exhaust port (4); the scroll compressor further comprises an air suction reheating assembly; the air suction reheating assembly isin heat exchange contact with the air suction pipe (3); an air inlet of the air suction reheating assembly communicates with the exhaust port (4); an air outlet of the air suction reheating assemblycommunicates with an exhaust cavity (5) of the casing (1); and at least part of a refrigerant discharged from the exhaust port (4) flows through the air suction reheating assembly and flows to the exhaust cavity (5) after being subjected to heat exchange with a refrigerant flowing through the air suction pipe (3). According to the scroll compressor, the phenomenon that liquid is carried due to airsuction can be effectively avoided, and the operation reliability of the scroll compressor is improved.

Description

technical field [0001] The present application relates to the technical field of compressors, in particular to a scroll compressor and a heat pump system. Background technique [0002] Scroll compressors are widely used in the fields of refrigeration, air conditioning and heat pumps because of their high efficiency, small size, light weight, and stable operation. Generally speaking, a scroll compressor is composed of a closed shell, a fixed scroll, a movable scroll, a bracket, a crankshaft, an oil supply device for an anti-rotation mechanism, and a motor. The profiles of the movable and static scrolls are both spiral , The movable scroll is installed eccentrically with respect to the static scroll with a difference of 180°, so multiple crescent-shaped spaces are formed between the movable and static scrolls. When the movable scroll takes the center of the static scroll as the center of rotation and performs non-rotation-translational motion with a certain radius of rotation...

AI Technical Summary

Problems solved by technology

However, for offshore container scroll compressors that use R134a refrigerant and are used in the field of refrigeration and freezing, the suction temperature will be as low as -45°C under certain working conditions, and the suction liquid cannot be ignored; for the heat pump system used in the low-temperature heating field The scroll compressor, the suction liquid problem will also occur frequently; in addition, with the increase of the application field of the multi-line system in recent years, the working condition range has also increased, and higher requirements have been put forward for the compressor in the low temperature and high temperature fields. Requirements, the problem of suction liquid ensued

[0005] When the scroll compressor is running, there is liquid in the suction, which will cause abnormal wear of the compressor, and even the fracture of the scroll teeth, which will reduce the operating reliability of the scroll compressor.

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