Kabushiki Kaisha Toyota Jidoshokki

Ken Namiki

Takuro Yamashita

Shiori Yamamoto

Yuya Hattori

Kunihisa Matsuda

Kenji Kakimoto

A scroll compressor includes a housing, a first scroll, a second scroll being configured to rotate relative to the first scroll about a driving axis of the scroll compressor. The second scroll has an end plate, a spiral element, and an adjustment portion adjusting a center-of-gravity of the second scroll. The adjustment portion has a bottom surface, a peripheral surface enclosing the bottom surface, and a connection surface connecting the bottom surface to the peripheral surface. The peripheral surface has a first peripheral surface and a second peripheral surface. A length of the first peripheral surface in a direction in which the driving axis extends is shorter than a length of the second peripheral surface in the direction in which the driving axis extends.

Scroll compressor

A fixed outer circumferential wall of a fixed scroll, a movable scroll, and a plate define a suction pressure space configured such that fluid flows from a suction chamber into the suction pressure space. The movable scroll and an opposed wall define a first back-pressure space. The plate and a back-pressure-chamber-defining recess of the opposed wall define a second back-pressure space. A back-pressure supplying groove of the opposed wall is configured to connect the first back-pressure space to the second back-pressure space, thereby supplying the fluid from the first back-pressure space to the second back-pressure space. A discharge hole of the plate is configured to connect the second back-pressure space to the suction pressure space, thereby discharging the fluid from the second back-pressure space to the suction pressure space. At least part of the discharge hole is overlapped with the back-pressure supplying groove in an axial direction.

A scroll compressor includes a fixed scroll and an orbiting scroll. A base plate of at least one of the fixed scroll and the orbiting scroll includes an auxiliary discharge port and a groove. The groove is partially covered with an orbiting volute wall facing the groove, so that a compression chamber that is in a compression process and is connected to the auxiliary discharge port is not connected to other compression chambers in a compression process or to a compression chamber connected to a main discharge port. The groove is always connected to one of the compression chambers.

Growing community of inventors

Kariya, Japan

Ken Namiki