| Patent application number | Description | Published |
|---|
| 20080236184 | Injectible two-staged rotary compressor and heat pump system - In an injectable two-staged rotary compressor, a second suction pipe includes a heat-exchange promoting unit that promotes heat exchange between intermediary-pressure injected refrigerant and internal space or an external surface of a sealed container. The heat being exchanged by the intermediary-pressure injected refrigerant absorbing heat. | 10-02-2008 |
| 20090081053 | TWO-STAGE ROTARY COMPRESSOR - A two-stage rotary compressor includes a sealed cylindrical compressor housing that includes first, second and third communication holes separately arranged sequentially in an axial direction on an outer peripheral wall, an accumulator held on an outer side of the housing, a low-pressure connecting pipe that connects a bottom communication hole of the accumulator and the second communication hole, and an intermediate connecting pipe that connects the first and third communication holes. The second and third communication holes are arranged at nearly the same circumferential direction position of the housing. The accumulator is held at nearly the same circumferential direction position as the second communication hole. The first communication hole is arranged at a circumferential direction position different from the second and third communication holes to ensure that the low-pressure connecting pipe and the intermediate connecting pipe two dimensionally bent in a circular arc shape do not interfere with each other. | 03-26-2009 |
| 20090087321 | TWO-STAGE COMPRESSION ROTARY COMPRESSOR - A two-stage compression rotary compressor is provided that includes a low-stage compressing section and a high-stage compressing section housed within a cylindrical sealed housing oriented vertically, a low-stage suction pipe that is connected to a suction side of the low-stage compressing section and sucks in a low-pressure refrigerant, a low-stage discharge pipe the is connected to a discharge side of the low-stage compressing section and discharges the refrigerant from the low-stage to outside of the sealed housing, a high-stage suction pipe that is connected to a suction side of the high-stage compressing section and sucks in the refrigerant discharged from the low-stage, a low-pressure connecting pipe that connects the low-stage suction pipe and an accumulator, and guides the refrigerant inside the accumulator to a suction side of a low-stage compressing section, and an intermediate connecting pipe that connects the low-stage discharge pipe and the high-stage suction pipe, wherein an inner diameter of the lower-stage connecting pipe is larger than an inner diameter of the intermediate connecting pipe. | 04-02-2009 |
| 20100054978 | INJECTIBLE TWO-STAGE COMPRESSION ROTARY COMPRESSOR - An injectable two-stage compression rotary compressor includes a compressor housing; a low-stage compressing section provided in the compressor house; a high-stage compressing section provided near the low-stage compressing section; a motor for driving the low-stage compressing section and the high-stage compressing section; an accumulator held at an outer side portion of the compressor housing; a low-pressure connecting pipe connecting the accumulator and the low-stage compressing section; an intermediate connecting pipe connecting the low-stage compressing section and the high-stage compressing section outside the compressor housing; and an intermediate suction pipe for introducing a medium pressure injection refrigerant into the intermediate connecting pipe. The intermediate suction pipe is connected to the intermediate connecting pipe so that an outlet of the intermediate suction pipe faces in a flowing direction of a medium pressure gas refrigerant in the intermediate connecting pipe. | 03-04-2010 |
| 20110027117 | ROTARY COMPRESSOR - According to one embodiment, a rotary compressor includes a compressor housing, a compressing unit, a motor, and an oil supply mechanism. The compressor housing has an inlet and an outlet of refrigerant. The compressing unit compresses refrigerant sucked in from the inlet. The motor drives the compressing unit through a rotation shaft. The oil supply mechanism supplies lubricant oil to the compressing unit through an oil supply hole of the rotation shaft. The oil supply mechanism includes a housing hole, a pump case, and a pump vane. The housing hole is communicated with the oil supply hole. The pump case is fitted in the housing hole. The pump vane is housed in the pump case, and includes a large width portion which is locked by the upper inner surface of the pump case. | 02-03-2011 |
