摘要:
A scroll-type variable-capacity compressor is disclosed in which a single spool is moved to open or close bypass ports and thereby change the capacity of compression chambers. Especially, the capacity can be controlled in satisfactory manner by opening the bypass ports to a specific position. Specifically, a first bypass port is arranged in the neighborhood of the contact point between the inner surface of the spiral wall of a fixed scroll and the outer surface of the spiral wall of a movable scroll making up one of the compression chambers with the capacity thereof reduced to a predetermined level. A second bypass port is arranged at a position on the side beyond a discharge port from the first bypass port but where the discharge port is not located on the line connecting the particular position and the first bypass port. The opening of the second bypass port is arranged at such a position as to be closed by the spiral wall of the movable scroll defining the other compression chamber in the state described above.
摘要:
In a hybrid compressor for a vehicle where a vehicle engine is stopped when the vehicle is temporally stopped, a pulley, a motor and a compressor can be driven in independent from each other, and are connected to a sun gear, planetary carriers and a ring gear of a planetary gear. A rotational speed of the motor is adjusted by a controller, so that a rotational speed of the compressor is changed with respect to a rotational speed of the pulley. Accordingly, production cost of the hybrid compressor and the size thereof can be reduced, while a cooling function can be ensured even when the vehicle engine is stopped.
摘要:
A fluid machine for a gas compression refrigerating system comprises a first and a second working for performing a pump mode operation, in which working fluid of low pressure is sucked into and compressed by the working chambers. The fluid machine further comprises valve mechanism for selectively forming a motor mode passage in combination with a fluid passage change-over device, so that super heated working fluid of high pressure is introduced into at least one of the working chambers to perform a motor mode operation, in which the high pressure working fluid is expanded in the working chamber to obtain mechanical energy. The fluid machine according to the invention, therefore, performs the pump mode operation at one of the working chambers and at the same time the motor mode operation at the other working chamber.
摘要:
In a refrigerant cycle for a vehicle air conditioner, a compressor is operated by a power from a vehicle engine, a load detecting unit is disposed to detect load of the engine, an electromagnetic clutch is turned off so that a consumed power consumed in the compressor is reduced to zero when the load detected by the load detecting unit is equal to or larger than a first threshold value. In the refrigerant cycle, the first threshold value is set to be changed along a power-cutting curved line in such a manner that an increase rate of the first threshold value relative to the vehicle speed becomes larger as the vehicle speed becomes larger.
摘要:
A switch valve structure of a fluid machine (10) having a pump mode to operate as a compressor and a motor mode to operate as an expander is disclosed. In pump mode, a communication path (106) between a working chamber (V) and a high-pressure chamber (104) is closed, while in motor mode, the communication path (106) is opened by a valve unit (107d). The valve unit (107d) is includes a spool portion (117) sliding in the direction substantially perpendicular to the surface to which the communication path (106) opens and a valve portion (127) arranged at the forward end of the spool portion (127) and sliding with the spool portion (117) thereby to open/close the communication path (106). A swivel mechanism (137) is interposed between the spool portion (117) and the valve portion (127) to tilt the sliding axis of the valve portion (127) at an arbitrary angle with respect to the sliding axis of the spool portion (117).
摘要:
A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting the pump from the motor generator, when the expansion-compressor device is driven by the motor generator so as to be operated as a compressor device.
摘要:
A complex fluid machine (100) comprises a compressor device (110) for a refrigerating cycle (20) and an expansion device (120) for Rankine cycle (30) to collect waste heat from an engine (10) and convert into a rotational force, wherein the compressor device (110) and the expansion device (120) are arranged in a fluid machine housing (111, 101c, 121), but those devices (110, 120) are operatively independent from each other. The compressor and expansion devices (110, 120) are formed as scroll type devices, and each of the fixed scroll wraps (112b, 122b) are formed at a common base plate (101) and extend in opposite directions.
摘要:
A hybrid compressor system affords maximum cooling capability by making full use of an additional motor to improve the fuel consumption efficiency of a vehicle while ensuring passenger compartment cooling when the engine is stopped. The hybrid compressor system includes a compression unit for compressing a refrigerant, a motor for driving the compression unit, and disconnection means for disconnecting the drive force of a vehicle engine. In the hybrid compressor system, when the thermal load of the refrigeration cycle system lies within a predetermined range in a higher load region, the control means connects the disconnection means to allow the vehicle engine to drive the compression unit. When the thermal load of the refrigeration cycle system lies within a lower load region of the predetermined range, the control means disconnects the disconnection means to allow the motor to drive the compression unit even while the vehicle engine is running.
摘要:
A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting the pump from the motor generator, when the expansion-compressor device is driven by the motor generator so as to be operated as a compressor device.
摘要:
An expansion-and-compressor device of a fluid machine has a pump mode operation in which the expansion-and-compressor device is rotated by a driving force from a driving source to compress working fluid, and a motor mode operation in which the fluid pressure is converted into energy of movement to output kinetic energy. The fluid machine further has a transmission device for transmitting the driving force from the driving source with increased rotational speed, when the expansion-and-compressor device is operated in the pump mode operation.