Scroll compressor with back pressure discharge

摘要

A scroll compressor having a back pressure discharge is provided. The scroll compressor may include a casing, a discharge cover, a main frame, a first scroll supported by the main frame, and a second scroll forming at least a discharge chamber together with the first scroll. The second scroll may include a discharge opening through which an operation fluid may be discharged. The scroll compressor may also include a back pressure chamber assembly fastened to the second scroll with a Efastener, a back pressure discharge opening that communicates with the back pressure chamber, and a discharge path by which the discharge chamber and the discharge space communicate with each other. The scroll compressor may further include a check valve disposed at the back pressure discharge opening to prevent the operation fluid from being introduced into the back pressure chamber.

主权项

1. A scroll compressor, comprising:
a casing; a discharge cover, the discharge cover dividing an inner surface of the casing into a suction space and a discharge space; a main frame, the main frame being formed spaced apart from the discharge cover; a first scroll supported by the main frame, the first scroll being configured to perform an orbital motion with respect to a rotational shaft thereof in operation; a second scroll that forms a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the first scroll, the second scroll being movable with respect to the first scroll and the second scroll comprising a discharge opening through which an operation fluid is discharged; a back pressure chamber assembly coupled to the second scroll, the back pressure chamber assembly comprising a back pressure plate having a back pressure chamber and a floating plate movably disposed in the back pressure chamber, the back pressure chamber assembly being configured to press the second scroll toward the first scroll, the back pressure chamber assembly further comprising a back pressure discharge opening that communicates with the back pressure chamber; a discharge path by which the discharge chamber and the discharge space communicate with each other, wherein a back pressure discharge path by which the back pressure discharge opening and the discharge path communicate with each other is formed between facing surfaces of the back pressure chamber assembly and the second scroll; and a check valve that prevents the operation fluid from being introduced into the back pressure chamber, the check valve being disposed at the back pressure discharge opening.