Panasonic Intellectual Property Management Co., Ltd.

Yoshihiko Nagase

Kazuyoshi Sugimoto

Satoshi Iitsuka

Tsutomu Kon

Yasunori Kiyokawa

Akihiro Hayashi

Kenji Aida

Katsuki Akuzawa

Yoshiaki Nagasawa

A scroll compression mechanismfor compressing refrigerant and a driving motorthat is connected to the scroll compression mechanismthrough a driving shaftand drives the scroll compression mechanismare accommodated in a casingthe scroll compression mechanismis supported in the casingby a main framea statorof the driving motoris directly or indirectly supported in the casingand the driving shaftis connected to a rotorof the driving motorand supported in the casingby a bearing plateand a lower end of the driving shaftis supported by a thrust plateprovided to the bearing plateand the center position of the rotoris located to be lower than the center position of the stator

Scroll compression device

A scroll compression mechanismfor compressing refrigerant and a driving motorthat drives the scroll compression mechanismare accommodated in a casing, the scroll compression mechanismis supported in the casingby a main frame, the driving shaftis connected to a rotorof the driving motorand supported in the casingby a bearing plate, a pickupis connected to an oil supply pathextending in an up-and-down direction in the driving shaft, and intercommunication pathsB,A through which lubrication oil scraped up by the pickupand supplied to respective lubrication sites is returned to the lower side of the driving motorare provided between the statorand the spacer ringor between the spacer ringand the casing

A scroll compression device that prevents scattering of lubrication oil to a discharge pipe side is provided. A cup 48 which is opened at the lower portion thereof and prevents scattering of lubrication oil is disposed on the lower surface of the main frame 21, and an annular insulator 19 having a double wall structure which surrounds windings is disposed on the upper surface of a stator 37. The peripheral wall of the cup 48 is hung between the double walls 19A, 19B of the insulator.

A scroll compression device that is adaptable to a larger elimination capacity by using a balancer of magnetic material is provided. A scroll compression mechanismfor compressing refrigerant and a driving motorthat is connected to the scroll compression mechanismthrough a driving shaftand drives the scroll compression mechanismare accommodated in a casingthe scroll compression mechanismis supported in the casing by a main framea rotorof the driving motoris connected to the driving shaftthe driving shaftis supported in the casing by a bearing platean upper balancerof magnetic material is secured onto the shaft above the statorof the driving shafta lower balancerof non-magnetic material is secured to the lower end of the rotorand an auxiliary balancerof non-magnetic material is secured in the gap between the upper end of the rotorand the upper balancer

Growing community of inventors

Gunma-ken, Japan

Yoshihiko Nagase