Mitsubishi Denki Kabushiki Kaisha

Kazuyuki Akiyama

Hiroshi Ogawa

Fumiaki Sano

Kiyoharu Ikeda

Yoshihide Ogawa

Yoshinori Shirafuji

Keiju Sakaino

A scroll compressor comprising a rotation constraining device for restricting the rotation of the orbital scroll toward the principal axis rotational direction and for extending the constraining range of the orbital scroll toward the principal axis reverse rotational direction, and a compression chamber torque forming device for causing a pressure in a first compression chamber to be larger than that in a second compression chamber when the pressure in the compression chambers rises up abnormally high. The first compression chamber is formed between the wrap member inside surface of the fixed scroll and the wrap member outside surface of the orbital scroll and the second compression chamber is formed between the wrap member outside surface of the fixed scroll and the wrap member inside surface of the orbital scroll.

Scroll compressor having a pressure relief mechanism using an oldham

A discharge valve is incorporated into a scroll compressor for use in a refrigerator or an air conditioner. A valve element seating surface having a concave cylindrical shape is formed in the upper surface of the stationary disk of the stationary scroll plate of the scroll compressor, a discharge port is formed through the stationary disk of the stationary scroll plate so as to open in the valve element seating surface, and a discharge valve element having a cylindrical shape conforming to the concave cylindrical shape of the valve element seating surface is seated on the valve element seating surface so as to open or close the discharge port. The valve element seating surface having a concave cylindrical shape facilitates machining the stationary scroll plate, reduces the top clearance of the scroll compressor without reducing the rigidity of the stationary disk, prevents the concentration of stress on the delivery valve, and improves the reliability of the delivery valve.

Delivery valve for a scroll compressor

Growing community of inventors

Tokyo, Japan

Kazuyuki Akiyama