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| Number | Title | Issue Date |
| 7442017 | Displacement type compressor having a self-start synchronous motor and start load reducing means In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high energy efficiency, the displacement type compressor according to the i... | 10/28/2008 |
| 7435067 | Scroll machine with brushless permanent magnet motor A scroll machine is powered by a brushless permanent magnet motor. The rotor for the motor includes a rotor body formed by a plurality of laminations and an upper and lower counterweight made of zinc and located at opposite ends of the rotor body. An attachment memb... | 10/14/2008 |
| 7419370 | Scroll compressor having a position adjustment device urging the movable scroll towards the stationary scroll by moving a seal formed between a support and the movable scroll A scroll compressor has a moving scroll and a stationary scroll in contact with each other. A seal ring for defining a back pressure space at a rear side of the moving scroll is provided and its position is adjusted between a sealing position and a leakage position ... | 09/02/2008 |
| 7384250 | Oil discharge preventing apparatus of scroll compressor An oil discharge preventing apparatus of a scroll compressor comprises: a balance weight coupled to a rotor of a driving motor so as to offset an unbalance generated when an orbiting scroll performs an orbiting motion by receiving a rotation force of the driving mot... | 06/10/2008 |
| 7381037 | Apparatus for varying capacity of scroll compressor An apparatus for varying the capacity of a scroll compressor is disclosed. The apparatus for varying the capacity of a scroll compressor includes a bypass passage for connecting a compression pocket under intermediate pressure among compression pockets formed by a w... | 06/03/2008 |
| 7364417 | Compression unit of orbiting vane compressor Disclosed herein is a compression unit of an orbiting vane compressor having improved tight contact between a circular vane and sealing means wherein the sealing means can be easily manufactured. The compression unit compresses refrigerant gas introduced by an orbit... | 04/29/2008 |
| 7363696 | Method of assembling a sealed type motor-driven compressor A sealed type motor-driven compressor includes a cylindrical motor housing and an annular stator core fastened to the interior of the motor housing. A method of assembling the compressor includes fastening the stator core to the motor housing by mechanically deformi... | 04/29/2008 |
| 7364416 | Scroll type compressor with an enhanced sealing arrangement A scroll type compressor with an enhanced sealing arrangement includes two sealing rings, mounted one between a first part of a gliding block and a first chamber of a fixed scroll and another one between a second part of the gliding block and a second chamber of the... | 04/29/2008 |
| 7361003 | Slider adapting apparatus for orbiting vane compressors Disclosed herein is a slider adapting apparatus for orbiting vane compressors. A circular vane of an orbiting vane is disposed in an annular space defined in a cylinder. A pair of sliders is coupled with the circular vane for performing reciprocating movement along ... | 04/22/2008 |
| 7361004 | Compression unit of orbiting vane compressor Disclosed herein is a compression unit of an orbiting vane compressor. The compression unit comprises a circular operation space formed in a cylinder, the circular operation space having opposite ends, a circular vane disposed in the operation space for performing a... | 04/22/2008 |
| 7357627 | Scroll fluid machine In a scroll fluid machine, a stationary scroll fixed to a housing engages with an orbiting scroll to form a sealed chamber between the orbiting and stationary scrolls. Fluid in the sealed chamber is compressed or decompressed with revolution of the orbiting scroll w... | 04/15/2008 |
| 7354259 | Scroll compressor having a valved back pressure chamber and a bypass for overcompression There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to... | 04/08/2008 |
| 7344365 | Scroll compressor with bypass holes communicating with an intake chamber A scroll compressor includes a first scroll and a second scroll. The first scroll has a step portion that separates an elevated portion and a recessed portion of a surface of the first scroll. A spiral wall of the second scroll has a step that separates an elevated ... | 03/18/2008 |
| 7341440 | Scroll compressor A scroll compressor includes an orbiting scroll having a compressor chamber in an upper portion thereof and a bypass passage formed through upper and lower ends of a body thereof, a fixed scroll that allows the orbiting scroll to orbit therein to compress a coolant,... | 03/11/2008 |
| 7341437 | Capacity-changing unit of orbiting vane compressor Disclosed herein is a capacity-changing unit of an orbiting vane compressor that is capable of selectively accomplishing compression or communication in inner and outer compression chambers of a cylinder through simple manipulation of a valve, thereby easily changin... | 03/11/2008 |
| 7338265 | Scroll machine with single plate floating seal A scroll machine utilizes a floating seal to isolate pressurized fluid to provide axial biasing. The floating seal is designed as a single piece plate with inner and outer annular seals. The inner and outer annular seals can be U-shaped, V-shaped or L-shaped and eac... | 03/04/2008 |
| 7338264 | Recesses for pressure equalization in a scroll compressor A scroll compressor is provided with spaced grooves in a base of one of the two scroll members. A recess is formed in a wrap tip of the other scroll member. The recess in the wrap tip bridges a space between the grooves of the other scroll member. This bridging equa... | 03/04/2008 |
| 7331774 | Back pressure control mechanism of orbiting scroll in scroll compressor There is provided, at a low cost, a small-size and lightweight scroll compressor capable of preventing a decrease in compression efficiency by utilizing a medium pressure between a suction pressure and a discharge pressure as a back pressure. An independent minute g... | 02/19/2008 |
| 7326039 | Apparatus for varying capacity of scroll compressor The present invention discloses an apparatus for varying a capacity of a scroll compressor. The apparatus comprises: a pressure control mechanism for controlling a pressure applied to the back of a orbiting scroll orbiting engaged with a fixed scroll; and a sealing ... | 02/05/2008 |
| 7322807 | Scroll machine with axially compliant mounting A scroll compressor includes a compression mechanism contained within a shell. A non-orbiting scroll is supported for axial displacement relative the shell, and includes an end plate having a wrap extending therefrom and a flange having a bore extending therethrough... | 01/29/2008 |
| 7316550 | Scroll compressor A scroll compressor, which allows refrigerant in a compressor chamber to be partially discharged so that frictions generated in frictional surfaces between an orbiting scroll and an Oldham ring and between the Oldham ring and a main frame may be decreased. Also, an ... | 01/08/2008 |
| 7314357 | Seal member for scroll compressors A scroll compressor having a housing with a motor-compressor unit disposed therein. The motor-compressor unit includes a crankcase, stator, rotor, and drive shaft assembly. The motor-compressor unit further includes a fixed scroll member and an orbiting scroll membe... | 01/01/2008 |
| 7309220 | Back pressure apparatus for orbiting vane compressors Disclosed herein is a back pressure apparatus for orbiting vane compressors that is capable of reducing excessive axial force applied to an orbiting vane due to high-pressure refrigerant gas introduced to the lower surface of a vane plate of the orbiting vane. The b... | 12/18/2007 |
| 7300265 | Flanged sleeve guide A scroll machine includes a shell and a pair of scroll members. At least one of the scroll members disposed in the shell is mounted for axial movement with respect to the other scroll member disposed in the scroll. The amount of axial movement of at least one scroll... | 11/27/2007 |
| 7284972 | Scroll compressor with stop structure to prevent slider block movement A scroll compressor has a stop on its eccentric pin to selectively engage a notch in a slider block, and prevent the slider block from moving upwardly and contacting a rear surface of the orbiting scroll. The present invention prevents this unwanted contact, and the... | 10/23/2007 |
| 7278832 | Scroll compressor with enlarged vapor injection port area Scroll compressors are provided with vapor injection or by-pass ports that will allow greater flow of refrigerant through the port than was the case in the prior art. The prior art has typically utilized a single injection port having a diameter equal to or slightly... | 10/09/2007 |
| 7275918 | Scroll apparatus with an axial gap control function A scroll apparatus with an axial gap control function is described. The scroll apparatus is capable of controlling the axial gap between its fixed scroll and orbiting scroll. The scroll apparatus has a frame with a pair of indentations installed in the casing of the... | 10/02/2007 |
| 7273362 | Scroll compressor with an eccentric pin having a higher contact point A scroll compressor assembly includes a shaft having an eccentric pin that orbits a first scroll member relative to a second scroll member. The eccentric pin has a length extending from a base end to a distal end, which defines a contact area having a slight crown t... | 09/25/2007 |
| 7273363 | Scroll compressor with slider block having recess A slider block for a scroll compressor has a recess formed in a wall between a flat portion on the outer surface and a chamfer formed on the inner surface. The recess eliminates a high stress area of the prior art, and reduces cracks originating from this area of th... | 09/25/2007 |
| 7273361 | Coupling structure of eccentric bush of scroll compressor A coupling structure of an eccentric bush of a scroll compressor, comprising: an orbiting scroll; a rotary shaft provided with an eccentric part and transferring rotary power of a driving motor to the orbiting scroll; and an eccentric bush coupled between the orbiti... | 09/25/2007 |
| 7264453 | Horizontal scroll compressor having a connecting passage on the opposite side of a suction port for connecting a motor accommodating chamber with a suction chamber A motor accommodating chamber accommodates an electric motor such that a rotation axis of the motor is substantially horizontal. The pressure in the motor accommodating chamber is equal to the pressure in a suction chamber. A connecting passage connects a bottom por... | 09/04/2007 |
| 7264452 | Rotor position control for rotary machines Improved rotor position control for rotary machines allows for positioning mechanisms which are more compact, relative to the stroke of the machine. A crank having a center shaft which extends through the rotor chamber is rotatably mounted in a forward in wall of th... | 09/04/2007 |
| 7247009 | Scroll compressor with slider block having upper surface over enlarged area A scroll compressor has a novel slider block with an upper surface that extends for a greater extent than the prior art. By extending this upper surface, the upper surface is better able to withstand wear on the slider block during the life of the scroll compressor.... | 07/24/2007 |
| 7229261 | Scroll compressor having an annular recess located outside an annular seal portion and another recess communicating with suction port of fixed scroll A surface of a fixed scroll which is opposed to a end plate of an orbiting scroll existing outside of a lap of the fixed scroll is formed with: a substantially annular seal portion which extends such as to have an outer wall surface of the fixed scroll outwardly ext... | 06/12/2007 |
| 7214044 | Compressor having an oil passage which one end is connected to oil collecting groove and other end is opened to cover end surface of bearing A compressor for suppressing leakage of lubricating oil has a casing, a motor and a scroll mechanism coupled to the motor by a drive shaft. The drive shaft is rotatably supported by a bearing. The lubricating oil is supplied between the drive shaft and the bearing. ... | 05/08/2007 |
| 7201568 | Scroll fluid machine A scroll fluid machine has a low-pressure stage compression part for compressing a fluid sucked in from the outside between mutually overlapping wrap portions of two scroll members performing a relative orbiting motion and a high-pressure stage compression part for ... | 04/10/2007 |
| 7195470 | Scroll compressor having a supply passage connecting the back pressure chamber to discharge pressure region and passing a clearance at a sliding portion A scroll type compressor includes a housing defining a discharge pressure region, a fixed scroll member having a fixed base plate and a fixed scroll wall, a movable scroll member having a movable base plate and a movable scroll wall, a fixed wall slidably supporting... | 03/27/2007 |
| 7192261 | Scroll fluid machine having permanent magnets mounted on respective the stationary and orbiting end plates for preventing axial motion of the orbiting scroll In a scroll fluid machine, an orbiting scroll is eccentrically revolved with respect to a stationary scroll so that fluid in a sealed chamber between the stationary and orbiting scrolls may be compressed toward a center. A first magnet is mounted on the stationary s... | 03/20/2007 |
| 7188472 | Method and hydromachine for controlling a displacement The invention concerns a method and a hydromachine with a commutation device and with expanding and contracting pressure chambers passed by fluid and formed by displacement arrangements. With the method and the hydromachine, it is endeavoured to control a displaceme... | 03/13/2007 |
| 7189067 | Scroll compressor having vacuum preventing structure A scroll compressor having a vacuum preventing structure includes: a casing forming a receiving space therein; a fixed scroll fixed to a main frame installed in the casing, and including a back pressure passage at an outer side surface thereof, a discharge pressure ... | 03/13/2007 |
