Abstract: A computer program and system for calculating the performance of a compressor includes selecting a compressor from a database, inputting application conditions, comparing data for the selected compressor to the inputted application conditions, defining an operating envelope for the selected compressor by defining a series of points representing lower and upper limits of evaporating and condensing temperatures for the selected compressor, determining whether the selected compressor operates within its operating envelope, and calculating the performance of the selected compressor.

Abstract: A computer program and system for calculating the performance of a compressor includes selecting a compressor from a database, inputting application conditions, comparing data for the selected compressor to the inputted application conditions, defining an operating envelope for the selected compressor by defining a series of points representing lower and upper limits of evaporating and condensing temperatures for the selected compressor, determining whether the selected compressor operates within its operating envelope, and calculating the performance of the selected compressor.

Abstract: A system and method for calculating the performance of a compressor includes a controller in communication with a cooling system. A database includes compressor specification data. A computer communicates with the controller and accesses the database. A user interface associated with the computer is operable to select a compressor from the database, input application conditions, compare data for the selected compressor to the inputted application conditions, and verify operating limits of the selected compressor based on the compressor specification data and the input application conditions.

Abstract: The scroll machine has a first and a second scroll member each having intermeshed scroll wraps. A compensation member is attached to one of the scrolls. As the scroll machine warms to operating temperature, the compensation member exerts a force on the one scroll member causing it to deflect. The deflection of the scroll member compensates for the unequal growth of the scroll wrap which is caused by a temperature difference between the radially inner section and the radially outer section of the scroll wrap.

Abstract: A scroll compressor utilizes scroll wrap profiles which are designed with a rapid compression scroll wrap profile. This profile utilizes a shorter wrap and lower vane aspect ratios during the compression process. The non-orbiting scroll member is integrated with the main bearing housing. The drive shaft extends through the main bearing housing, through the non-orbiting scroll member and through the orbiting scroll member. In one embodiment, a counterweight is disposed adjacent the orbiting scroll member. In another embodiment, and upper bearing housing is disposed adjacent the orbiting scroll member. In yet another embodiment, an upper bearing housing is disposed adjacent the orbiting scroll member with a counterweight disposed adjacent the upper bearing housing.

Abstract: A floating seal has a lower plate, an upper plate and a pair of seals disposed between the two plates. The lower plate, the upper plate or both plates include a backer which projects outward from the plate to engage one or both of the seals to support the seal during operation.

Abstract: A system includes a compressor receiving fluid from a low-pressure side of a circuit and outputting fluid to a high-pressure side of the circuit. The system also includes a motor drivingly connected to the compressor, at least one high-side sensor operable to measure fluid properties of the high-pressure side of the circuit, at least one current sensor operable to monitor a current drawn by the motor, and processing circuitry receiving fluid property and current information from the at least one high-side sensor and the at least one current sensor and processing the information to determine a system operating condition.

Abstract: A scroll compressor has a fluid pressure biasing system for both the orbiting scroll member and the non-orbiting scroll member. The biasing system can utilize a pressurized gas from the pocket of the scroll compressor or it can utilize an external pressurized oil source. In an additional embodiment, a hydrostatic bearing is located between the orbiting scroll member and the non-orbiting scroll member.

Abstract: A scroll machine includes a shell and at least one of the scroll members disposed in the shell being mounted for axial movement with respect to the other scroll member disposed in the scroll. The amount of axial movement of the at least one scroll member is accurately controlled by providing a stop. The stop is defined by the contact of the end plate of the at least one scroll member with another member of the scroll machine which is accurately positioned within the shell of the scroll machine. The another member can be shell, or another component which engages the shell.

Abstract: A fitting is secured to a shell of an apparatus. A tube is fixedly and sealingly attached to the fitting by either forming the fitting into engagement with the tube or forming the tube into engagement with the fitting. In both embodiments, engagement between the tube and a contoured surface defined by the fitting creates the fixed and sealed attachment.

Abstract: A rotary machine is powered by a drive shaft having a bore extending through it. A single piece lubricant flinger is disposed within the bore to form a lubricant pump. The lubricant flinger includes an upper plate located within the bore and a washer located adjacent the opening of the bore. The washer is connected to the upper plate by a connection section and the washer defines an aperture which allows fluid to flow into the bore of the shaft.

Abstract: A scroll compressor has a biasing chamber which contains a pressurized fluid. The pressurized fluid within the chamber biases the two scroll members together. A rotatable ring is attached to one of the scroll members to open and close a passage leading to this biasing chamber. When the ring opens the passage in one embodiment, this releases the pressurized fluid to remove the load, biasing the two scroll members together. When the biasing load is removed, the two scroll members separate, creating a leakage path between discharge and suction to reduce the capacity of the scroll compressor. When the ring opens the passage in another embodiment, a delayed suction passage is opened to reduce the capacity of the compressor.

Abstract: A connector block assembly has a connector block and a plurality of end fittings which are attached to at least one wire. Each end fitting is secured to the connector block by being inserted into the connector block and then being rotated to trap the end fitting within the connector pin. Once assembled onto a conductor pin, the conductor pin prohibits rotation of the end fitting with respect to the connector block and thus the disassembly of the end fitting from the connector block.

Abstract: A hermetic scroll compressor includes a hermetic shell through which the pressure within the shell is monitored. In one embodiment, a housing is resistance welded into an aperture extending through the shell. An oil filled pressure sensor or a dry type pressure sensor is associated with the housing. The oil filled pressure sensor extends through an aperture in the shell. The dry type pressure sensor is located on the housing outside of the shell. In another embodiment, the shell forms the diaphragm portion of the pressure sensor.

Abstract: A compressor assembly includes a planetary gear train located between an input shaft from the power unit and a drive shaft of the compressor. The planetary gear train is switchable between a high speed and a low speed condition. In the high speed condition, power is provided to the planetary gears, the ring gear is locked and output to the drive shaft is through the sun gear. In the low speed condition, a one-way clutch between the input shaft and the output shaft provides a one-to-one driving ratio.

Abstract: A discharge valve assembly is provided for preventing reverse rotation of a scroll compressor. The discharge valve assembly includes a cup-shaped valve member slidably engaged with a central post of a retainer member. The cup-shaped valve member includes notches in communication between the central post of the retainer and the sidewalls of the cup-shaped valve member.

Abstract: Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.

Abstract: The present invention provides the art with a scroll machine which has a plurality of built-in volume ratios along with their respective design pressure ratios. The incorporation of more than one built-in volume ratio allows a single compressor to be optimized for more than one operating condition. The operating envelope for the compressor will determine which of the various built-in volume ratios is going to be selected. Each volume ratio includes a discharge passage extending between one of the pockets of the scroll machine and the discharge chamber. All but the highest volume ration utilize a valve controlling the flow through the discharge passage.

Abstract: An axial complaint mounting system for a scroll machine positions the centroid reaction of the mounting system toward the top of a mounting bore extending through the axial compliant scroll member. The mounting system defines a first clearance located near the top of the mounting bore and a second clearance located near the bottom of the mounting bore. The positioning of the centroid reaction for the mounting system is accomplished by designing the second clearance larger than the first clearance.

Abstract: A valve plate assembly includes an upper valve plate, a lower valve plate, an annular spacer and a center spacer. The annular spacer is located between the upper and lower valve plates and around the outer periphery of the upper and lower valve plates. The center spacer is located at approximately the geometric center of the valve plate assembly to provide additional support for the valve plate assembly.