Scroll compressor

A scroll compressor, comprising:

• a casing;
• a drive motor disposed in an inner space of the casing;
• a main frame disposed at one side of the drive motor;
• an orbiting scroll having an orbiting wrap formed on one side surface of an orbiting end plate and configured to perform an orbiting motion while supported on the main frame;
• a non-orbiting scroll having a non-orbiting wrap formed on one side surface of a non-orbiting end plate portion facing the orbiting end plate portion and engaged with the orbiting wrap to form compression chambers;
• and
• an Oldham ring disposed between the orbiting scroll and the main frame or between the orbiting scroll and the non-orbiting scroll so that the orbiting scroll performs the orbiting motion, wherein a first sealing portion is defined between an inner surface of the orbiting wrap and an outer surface of the non-orbiting wrap facing the inner surface of the orbiting wrap in a radial direction, the first sealing portion comprising a protrusion formed on one of the inner surface of the orbiting wrap or the outer surface of the non-orbiting wrap facing the inner surface of the orbiting wrap in the radial direction and a corresponding recess formed on another of the inner surface of the orbiting wrap or the outer surface of the non-orbiting wrap facing the inner surface of the orbiting wrap in the radial direction, and a second sealing portion is defined between an inner surface of the non-orbiting wrap and an outer surface of the orbiting wrap facing the inner surface of the non-orbiting wrap in the radial direction, the second sealing portion comprising a protrusion formed on one of the inner surface of the non-orbiting wrap or the outer surface of the orbiting wrap facing the inner surface of the non-orbiting wrap in the radial direction and a corresponding recess formed on another of the inner surface of the non-orbiting wrap or the outer surface of the orbiting wrap facing the inner surface of the non-orbiting wrap in the radial direction, and wherein radiuses of curvatures of the sealing surfaces are larger than an orbiting radius of the orbiting scroll.

A scroll compressor, comprising:

• a casing;
• a drive motor disposed in an inner space of the casing;
• a main frame disposed at one side of the drive motor:
• an orbiting scroll having an orbiting wrap formed on one side surface of an orbiting end plate and configured to perform an orbiting motion while supported on the main frame;
• a non-orbiting scroll having a non-orbiting wrap formed on one side surface of a non-orbiting end plate portion facing the orbiting end plate portion and engaged with the orbiting wrap to form compression chambers;
• an Oldham ring disposed between the orbiting scroll and the main frame or between the orbiting scroll and the non-orbiting scroll so that the orbiting scroll performs the orbiting motion, wherein the orbiting scroll and the non-orbiting scroll are disposed in an inner space of the casing, wherein the inner space of the casing is divided into a low-pressure portion that communicates with a refrigerant suction pipe and a high-pressure portion that communicates with a refrigerant discharge pipe, wherein a suction end of the orbiting wrap and a suction end of the non-orbiting wrap communicate with the low-pressure portion, wherein a first sealing portion is defined between an inner surface of the orbiting wrap and an outer surface of the non-orbiting wrap facing the inner surface of the orbiting wrap in a radial direction, and a second sealing portion is defined between an inner surface of the non-orbiting wrap and an outer surface of the orbiting wrap facing the inner surface of the non-orbiting wrap in the radial direction, wherein each of the first sealing portion and the second sealing portion comprises sealing surfaces where the wraps facing each other are in surface-contact, wherein the sealing surface disposed on the inner surface of the orbiting wrap extends from an edge where the inner surface of the orbiting wrap and the suction end of the orbiting wrap are connected, and wherein the sealing surface disposed on the inner surface of the non-orbiting wrap extends from an edge where the inner surface of the non-orbiting wrap and the suction end of the non-orbiting wrap are connected;
• wherein the sealing surfaces are formed such that each of the sealing surfaces located on the inner surface of the orbiting wrap and the inner surface of the non-orbiting wrap has a radius of curvature larger than or equal to a radius of curvature of each of the sealing surfaces located on the outer surface of the non-orbiting wrap and the outer surface of the orbiting wrap.