Abstract: A horizontal-installation-type scroll compressor requiring small installation space adopts a technique which can reduce the amount of refrigerating machine oil circulating through the refrigeration cycle. By using this scroll compressor, an air conditioner is provided whose unit body has a reduced depth and which has satisfactory ventilation efficiency and cyclic efficiency.The scroll compressor includes a closed container which is separated into a section lodging an electric motor and a compression mechanism and a section where a discharge pipe is provided. Refrigerating machine oil is stored in the section including the discharge pipe in order to ensure the requisite amount of refrigerating machine oil. An oil separation mechanism is provided in the passage of the refrigerant gas so that refrigerant gas containing little amount of refrigerating machine oil may be sent out from the discharge pipe.

Abstract: A scroll compressor has an orbiting scroll which operatively meshes with a stationary scroll to define compression chambers therebetween. This orbiting scroll is driven by an electric motor through a crank-shaft, and makes an orbiting movement while being prevented from rotating about its own axis by a rotation preventing member. The crankshaft is journalled by at least two sliding bearings which are arranged respectively on the both sides of the electric motor, and the mast remotely distanced bearing from the orbiting scroll has a self-aligning function which enables it to change its attitude in accordance with any inclination of the crankshaft. Further, a balance and a counter weight are provided on the crankshaft to counterbalance the centrifugal force produced by the orbiting scroll and the inertial force produced by the rotation preventing member.

Abstract: A rotary compressor of the invention comprises an oil separating portion and an oil collecting portion located adjacent one end of a rotary shaft closely to a motor. An oil is separated through the oil separating portion and collected in the oil collecting portion in which the one end of the rotary shaft is submerged to lubricate a third bearing. The oil separating portion serves to separate oil mist which flows with gas flow. The one end of the rotary shaft is submerged in the oil as collected in the oil collecting portion under the influence of gravity to lubricate the bearing. This arrangement provides stable lubrication of the one end of the rotary shaft. The bearing is, thus, highly reliable while the rotary compressor is running at any speeds. Also, vibrations of the shaft can substantially be reduced particularly when the rotary compressor runs at a high speed.

Abstract: A horizontal compressor including an electric motor and a compressor element mounted in a case serving concurrently as an oil sump. The compressor element includes a cylinder, a shaft having a crank, a roller fitted to the crank for eccentric rotation along inner side surfaces of the cylinder, a vane moving in reciprocatory movement in a bore of the cylinder while abutting against the roller, two side plates located on opposite sides of the cylinder, one of the two side plates being formed with a suction port for a lubricant and the other side plate being formed with a discharge port for the lubricant, and a pump chamber defined by a back of the vane, the bore of the cylinder and the two side plates.

Abstract: A horizontal type rotary compressor including a compression element having a cylinder, a shaft having a crank thereon, a pair of side plates concurrently serving both as bearings of the shaft and as side walls of the cylinder, a roller fitted onto the crank, and a vane so arranged as to slide in a groove of the cylinder and have a tip end thereof contacted with the roller rotating in accordance with the rotation of the crank and an appropriate end thereof urged by a spring to make a reciprocating movement along the groove are provided within a case. A pumping chamber is defined by a rear face of the vane, the groove of the cylinder and the side plates. One of the side plates is formed with a suction port capable of sucking thereinto the oil within the case while the other of the side plate is formed with a discharge port for transmitting the oil in the pumping chamber to an oil feeding passage.