Abstract: A rotary compressor includes a housing, a motor and a compression pump. The housing includes a main shell, a top cover and a bottom cover. The motor is located in the housing. The compression pump is located in the housing and below the motor. The compression pump includes a cylinder. The cylinder includes a first end surface and a second end surface, an oil storage area is formed between the second end surface of the cylinder of the compression pump and a bottom cover of the housing. Wherein a volume of the refrigerant oil in the oil storage area is V, an inner diameter of the main shell is M, a distance between a bottom surface of the bottom cover and a bottom surface of the cylinder of the compression pump is H, a circumference is ?, and the following condition is satisfied: 25%?V/(?(M/2)2H)?40%.

Abstract: Consistent with an example embodiment, there is a semiconductor device having a front-side surface, back-side surface, and vertical surfaces. The semiconductor device comprises an active device die having electrical contacts on the front-side surface. A metal shield is plated on the back-side surface and the vertical surfaces of the active device die. Conductive links connect the plated metal shield to selected electrical contacts on the front-side surface.

Abstract: Disclosed is a power supply device of a rotary compressor, and an electrical connector is installed at a casing of the rotary compressor for electrically connecting a motor installed inside the casing and an external power supply. A planar portion is disposed on a lateral side of the casing for installing the electrical connector, so that the electrical connector installed on a lateral side of the casing of the rotary compressor casing will not cause an increase of height of the rotary compressor to achieve a convenient installation. In addition, a protective cover is mounted onto the planar portion for covering the electrical connector, and the bottom of the protective cover is attached onto the planar portion. The electrical connector is protected by the protective cover without being exposed.

Abstract: An axial compliant means for a scroll machine, wherein a second scroll revolves around a first scroll to form multiple compression chambers including a low pressure chamber, a medium pressure chamber and a high pressure chamber with working fluid pressure in them increasing gradually and radial-inwardly; a piston with multiple guided holes being subject to pressure of the working fluid connecting to one of those compression chambers through a flow passage is pushed-sliding straight by corresponding multiple guiding posts and pushing both of the scrolls to be axially in touch and sealed with each other.

Abstract: An axial compliant means for a scroll machine, wherein a second scroll revolves around a first scroll to form multiple compression chambers including a low pressure chamber, a medium pressure chamber and a high pressure chamber with working fluid pressure in them increasing gradually and radial-inwardly; a piston with multiple guided holes being subject to pressure of the working fluid connecting to one of those compression chambers through a flow passage is pushed-sliding straight by corresponding multiple guiding posts and pushing both of the scrolls to be axially in touch and sealed with each other.