| Patent application number | Description | Published |
|---|
| 20090081062 | SCROLL COMPRESSOR WITH HIGH SIDE TO LOW SIDE OIL BLEED VALVE - A scroll compressor is provided with an oil bleed valve that selectively communicates a discharge pressure chamber to a suction pressure chamber. The oil bleed valve controls flow of hot oil through a passage and onto a safety shutoff switch for an electric motor. | 03-26-2009 |
| 20100028182 | LINE FED PERMANENT MAGNET SYNCHRONOUS TYPE MOTOR FOR SCROLL COMPRESSOR WITH BYPASS PORTS - A scroll compressor is provided with some capacity reduction technique such as a bypass port. The electric motor for driving the scroll compressor is not an induction motor, but rather a line fed permanent magnet synchronous motor is utilized. Such motors have a higher overall efficiency, and thus will be more efficient at reduced capacity operation. | 02-04-2010 |
| 20100028184 | TEMPERATURE PROTECTION SWITCH BIASED AGAINST SCROLL COMPRESSOR SHELL - A sealed compressor is provided with a temperature sensor biased against an outer surface of its shell. By biasing the temperature sensor against the shell, good contact between the temperature sensor and the shell is ensured. Also by use of molded material around the senor, the sensor is insulated from ambient air, increasing the accuracy of the sensor. | 02-04-2010 |
| 20100050673 | OIL RETURN ALGORITHM FOR CAPACITY MODULATED COMPRESSOR - A control for a compressor motor is programmed to operate the motor at at least one low capacity and at least one higher capacity. The control is operable to estimate an amount of oil which will have migrated from said compressor shell, at least when the compressor is operating at the lower capacity rate. The motor control moves the compressor motor from the lower capacity to at least one higher capacity once the estimated quantity of oil exceeds a predetermined limit. The capacity may be related to space. | 03-04-2010 |
| 20110058971 | INJECTION TUBES FOR INJECTION OF FLUID INTO A SCROLL COMPRESSOR - A scroll compressor is provided with injection tubes which extend through an upper shell and into a fixed scroll member. The injection tubes are fixed relative to the fixed scroll member, and may be press-fit or otherwise secured. This arrangement simplifies the provision of injection ports into a scroll compressor. | 03-10-2011 |
| 20110070114 | OIL RETURN VALVE FOR A SCROLL COMPRESSOR - A valve for selectively allowing the return of oil from a discharge plenum to a suction plenum includes a passage which is selectively opened or blocked by a valve spool. The valve spool sees a pressure from a discharge pressure location upstream of a discharge check valve on one face, and a discharge pressure from a discharge plenum on an opposed face. While the compressor is running, the two pressures should be relatively equal. The face which sees the pressure from the chamber upstream of the check valve is larger than the face which sees the pressure from the discharge plenum. Thus, when the compressor is running, the valve spool is biased to a first position at which it allows oil return from the discharge plenum to the suction plenum. However, upon shutdown of the compressor, the pressure in the chamber upstream of the discharge valve drops. The valve spool will be driven to a second position at which it blocks communication for oil return. | 03-24-2011 |
| 20110091341 | METHOD AND APPARATUS FOR ESTABLISHING CLEARANCES IN SCROLL COMPRESSOR - A scroll compressor is provided having appropriate clearance for movement of the orbiting scroll member. Clearance is provided without requiring contact between the crankcase, which supports the orbiting scroll, and the non-orbiting scroll member. Clearance is established during the assembly process using installation tooling that establishes locations of components using a reference point. Clearance is also established using spacers. | 04-21-2011 |
| 20110135523 | SEALED COMPRESSOR WITH MOTOR STANDARD SPACER PROVIDING BEARING MOUNT - A spacer is positioned between an outer periphery of a motor stator, and the inner periphery of a center shell for a sealed compressor. The spacer allows a relatively small diameter motor to be used in a relatively large diameter center shell. The spacer includes a bearing mount in a lower plate, and a plurality of axially extending fingers positioned between the stator and the center shell. The spacer also includes a stop for proper positioning of the stator within the center shell. | 06-09-2011 |
