Sanyo Electric Co., Ltd.

Yoshiaki Hiruma

Takahiro Nishikawa

Hirotsugu Ogasawara

Akira Hashimoto

Masazumi Sakaniwa

Manabu Takenaka

Takao Kanayama

Junichi Suzuki

Masayuki Hara

Hiroyuki Sawabe

Hiroyuki Yoshida

Kenzo Matsumoto

Takashi Sato

Takayasu Saito

Yoshihisa Kogure

There is disclosed a rotary compressor which delays a pressure rise on a high pressure chamber side in a cylinder of a rotary compression element to decrease a high pressure load applied to a roller and a rotary shaft, thereby improving performance. In the rotary compressor including a sealed container in which an electromotive element (a driving element) and first and second rotary compression elements driven by a rotary shaft of the electromotive element are included, each of the rotary compression elements being constituted of a cylinder, a roller fitted into an eccentric portion formed on the rotary shaft to eccentrically rotate in the cylinder, and a vane which abuts on the roller to partition the inside of the cylinder into a low pressure chamber side and a high pressure chamber side, the inner diameter of a suction passage formed in each cylinder is 59% or more and 70% or less of the thickness of the cylinder.

Rotary compressor and manufacturing method of the same

A structure and method for fixing an upper cup muffler to an upper bearing portion. The upper bearing portion includes a step portion having an upper, lower and side surfaces. A peripheral edge portion between the upper and side surfaces of the upper bearing portion is declined outwardly to have a slant surface. The upper cup muffler includes a bottom surface and a peripheral side surface lower portion that extends downwardly from the edge portion of the bottom surface. The peripheral side surface lower portion gets across the slant surface of the upper bearing portion and is brought into linear or planar contact with at least one of the outer side surface and the lower surface of the step portion when the bottom surface of the upper cup muffler and the upper surface of the upper bearing portion are fixed to each other.

Fixing structure and method for fixing upper cup muffler

A compressor comprises: a cylinder with a compression space; a suction port and a discharge port which communicate with the compression space in the cylinder; a support member which closes an opening of the cylinder; a rotary shaft which is rotatably supported on the support member; a compression member whose one surface crossing an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is rotated and compresses a fluid to discharge the fluid via the discharge port; and a vane which is disposed between a suction port and the discharge port, abuts on one surface of the compression member and partitions the compression space in the cylinder into high and low pressure chambers.

Compressor with continuously inclined surface

In a hermetically sealed compressorincluding a rotary compressing element () having at least one cylinder (A,B), and a roller () provided to the cylinder so as to be freely eccentrically rotatable, an electrically-driven element () for driving the roller () and a hermetically sealed container in which the rotary compressing element and the electrically-driven element are accommodated, oil () being stocked in the hermetically sealed container (), the oil () in the hermetically sealed container () is injected into the compression chamber () when refrigerant is sucked into the compression chamber () of the cylinder.

Hermetically sealed compressor and method of manufacturing the same

A compressor having a sealed container; a cylinder in which a compression space is constituted; a suction port and a discharge port which communicate with the compression space in the cylinder; a support member which closes an opening of the cylinder; a rotary shaft which is rotatably supported by a main bearing as a bearing formed on the support member; a compression member whose one surface crossing an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center; a vane which is disposed between the suction port and the discharge port to abut on one surface side of the compression member and which partitions the compression space in the cylinder into a low pressure chamber and a high pressure chamber. A pressure of the compression member on the other surface side of the compression member is set to a value which is lower than tat of a pressure in the sealed container.

Rotary type compressor having an intermediate pressure on a surface side of its compression member

A compressor having a compression element with a cylinder in which a compression space is constituted, a suction port and a discharge port which communicate with the compression space in the cylinder, a support member which closes an opening on the cylinder and a rotary shaft which is rotatably supported by a main bearing as a bearing formed on the support member. A compression member, whose one surface crosses an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and is disposed in the cylinder to be rotated by the rotary shaft, compresses a fluid sucked from the suction port to discharge the fluid via the discharge port. A vane which is disposed between the suction port and the discharge port to abut on one surface of the compression member partitions the compression space in the cylinder into a low pressure chamber and high pressure chamber. A shaft seal which is disposed on an end portion of the main bearing, on a side opposite to the compression member, abuts on the rotary shaft.

Shaft seal for rotary type compressor

A refrigerant compressor has a member forming a compression chamber with a discharge port and a discharge reed valve. The reed valve has a valve cover portion at one end for opening and closing the discharge port and a portion at another end that is fixed to the member. A valve restricting plate is fixed to the member forming the compression chamber together with the fixed portion of the discharge valve so as to overlie the reed valve and to restrict the opening amount of the reed valve cover portion. The valve restricting plate has a head portion wider than a middle portion thereof which head portion opposes the valve cover portion of the discharge valve against which it can come into contact A through hole or notch is provided in the restricting plate head portion to provide back pressure flow communication that acts on the cover portion of the reed valve to prevent it from sticking to the valve restricting plate.

Growing community of inventors

Ota, Japan

Yoshiaki Hiruma