Abstract: A selectively driven compressor for stopping the power generating operation of a motor when an internal combustion engine is operating to make it unnecessary to provide the motor that can withstand high voltage. The system reduces the load on the internal combustion engine. The system includes a pulley driven by a main drive source, an electric motor, which includes an armature and a field system, driven by a power source. The compressor is driven selectively by the pulley or the electric motor. The armature and the field system of the electric motor are independently supported. The pulley is mechanically connected to either of the armature and the field system, and the compressor is mechanically connected to the other.

Abstract: A hybrid compressor apparatus for a refrigerant cycle is mounted on a vehicle having an engine that stops in accordance with driving conditions of the vehicle. The apparatus includes an electrical motor, a compressor driven by at least one of the engine and the motor for compressing refrigerant in the refrigerant cycle, a controller for controlling operation of the motor and the compressor and for selecting a driving source between the engine and the motor so as to drive the compressor, and a switch for manually setting a normal mode and an economy mode in the refrigerant cycle. The motor drives the compressor when the economy mode is selected while the engine stops. Therefore, an operation load of the compressor can be reduced in the economy mode, and fuel consumption can be reduced.

Abstract: A dynamotor capable of operating as either a motor or a generator is used with both the armature portion and the field portion thereof capable of being rotated. In the case where a pulley operatively interlocked with the output shaft of the prime mover is mounted on the rotary shaft of the armature portion, the drive shaft of the compressor is mounted on the rotating field portion. Once the dynamotor is operated in motor mode, the rotational speed of the compressor is increased to the sum of the input rotational speed and the rotational speed of the dynamotor. The compressor is stopped by disconnecting a power feed circuit. When the input rotational speed is too high, the dynamotor is operated in generator mode. In this way, the rotational speed is reduced in accordance with the generated electric energy.

Abstract: A composite auxiliary machine for a vehicle has proper startup performance in starting an engine. The composite auxiliary machine has a compressor for compressing a refrigerant inside a refrigeration cycle device, a rotary machine connected to the compressor and rotated together therewith, a drive pulley for operating the rotary machine in response to a driving force from the vehicle engine, and a clutch device for transmitting and terminating the driving force of the drive pulley. The rotary machine functions as a generator and an electric motor. A variable displacement mechanism is provided in the compressor to vary an amount of discharge per revolution. A control unit controls to engage the clutch device in starting the vehicle engine, and actuates the rotary machine as an electric motor to actuate the vehicle engine. Then, an amount of discharge of a refrigerant is controlled to become smaller than that necessary in the refrigeration cycle device.

Abstract: A composite auxiliary machine for a vehicle and an accompanying control unit to control a compressor. The composite auxiliary machine for a vehicle includes a compressor for compressing refrigerant, a rotary machine that acts as an electric motor and a generator, and a torque and power distributing mechanism for distributing engine torque and power from a drive shaft to a compressor shaft and a rotary machine shaft, and from the rotary machine shaft to the drive shaft and compressor shaft. An intermittent mechanism is provided to the torque and power distributing mechanism so as to connect and disconnect any two of the drive shaft, the compressor shaft, and the rotary machine shaft. A locking mechanism is provided for restricting rotation of the compressor shaft. The compressor includes variable displacement mechanism for varying the amount of discharge per turn of the compressor shaft.

Abstract: An air-conditioner for use in an automotive vehicle, an engine of which is stopped every time the vehicle stops at an intersection, includes a usual refrigeration cycle having a main compressor driven by the engine and a sub-circuit having a sub-compressor driven by an electric motor. The sub-compressor is connected in parallel to the main compressor, and both compressors are alternately driven. Refrigerant mixed with lubricant circulating in the main refrigeration cycle is prevented from entering into the sub-circuit while the sub-compressor is not in operation by means of a piping structure of the sub-circuit. When the refrigerant enters into the sub-circuit, it is efficiently returned to the main refrigeration cycle by intermittently operating the sub-compressor while the main compressor is operating.

Abstract: The hybrid compressor apparatus is composed of a compressor in which fluid is compressed by varying a volumetric capacity of a compression space provided between a first compression member and a second compression member, which are movable independently of each other, according to rotation of the first compression member relative to the second compression member, a motor rotatable upon receipt of power of an external electric source, and a driven member rotatably driven by motive force transmitted from an external driving source. The first compression member is connected with the driven member and the second compressor is connected with the motor. If maximum discharge amount is required for the compressor, the motor is driven separately by a control device when the driven member drives the first compression member so that the second compression member is rotated in a direction opposite to that of the first compression member.

Abstract: 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.

Abstract: 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.

Abstract: A controlled compressor apparatus enables a hybrid compressor in an idle-stopping vehicle to operate more efficiently when driven by a motor alone. The controlled compressor apparatus includes a compressor 110, included in a refrigeration circuit 200, of a variable volume type for compressing a refrigerant; a motor 120 powered by a battery 12 to operate; and a controller 130 for selecting the driving force provided either by the engine 10 or the motor 120 to drive the compressor 110 and control its discharge volume. The controller 130 causes the motor 120 to operate the compressor 110 such that the compressor 110 is turned on or off at a discharge volume of the compressor 110 that larger within a variable range than that required for operating the refrigeration circuit 200.

Abstract: A controlled compressor apparatus for idle-stopping vehicles that permits precise variable displacement control of a compressor and reduces power consumption when the compressor is motor-driven. The apparatus includes a battery-powered motor and a control unit for selecting the engine or the motor to drive the compressor and for controlling the displacement of the compressor. A current detector detects the magnitude of a current supplied to the motor. The control unit stores a relationship between the displacement and the current and controls the displacement based on the current detected by the current detector.

Abstract: In a compressor connected to a discharge pipe for transferring discharged refrigerant to outside, an oil separator has a near column shaped separation chamber which is formed in a housing and whose one end is opened to a surface of the housing, and a separator pipe having a large diameter portion and a small diameter portion both of which are inserted into the separation chamber. The large diameter portion is press fitted to an inner wall of the separation chamber in a vicinity of the opening end thereof so as to form cylindrical space between the small diameter portion and the inner wall of the separation chamber. Further, the discharged pipe is fluid-tightly connected and directly fixed to the housing at the opening end of the separation chamber.

Abstract: An air-conditioner for use in an automotive vehicle, an engine of which is stopped every time the vehicle stops at an intersection, includes a usual refrigeration cycle having a main compressor driven by the engine and a sub-circuit having a sub-compressor driven by an electric motor. The sub-compressor is connected in parallel to the main compressor, and both compressors are alternately driven. Refrigerant mixed with lubricant circulating in the main refrigeration cycle is prevented from entering into the sub-circuit while the sub-compressor is not in operation by means of a piping structure of the sub-circuit. When the refrigerant enters into the sub-circuit, it is efficiently returned to the main refrigeration cycle by intermittently operating the sub-compressor while the main compressor is operating.

Abstract: A selectively driven compressor for stopping the power generating operation of a motor when an internal combustion engine is operating to make it unnecessary to provide the motor that can withstand high voltage. The system reduces the load on the internal combustion engine. The system includes a pulley driven by a main drive source, an electric motor, which includes an armature and a field system, driven by a power source. The compressor is driven selectively by the pulley or the electric motor. The armature and the field system of the electric motor are independently supported. The pulley is mechanically connected to either of the armature and the field system, and the compressor is mechanically connected to the other.

Abstract: A low-cost vehicle air-conditioning apparatus for idle stopping vehicles is capable of performing both cooling and heating operations throughout the year. The air-conditioning apparatus includes an engine-driven compressor and engine-driven pump for a heating unit. The air-conditioning apparatus includes a motor-driven compressor and pump. A control unit drives the motor such that the motor-driven compressor is operated when there is a need for cooling and the motor-driven pump is operated when there is a need for heating when the engine is stopped. Battery power is conserved through various methods.

Abstract: 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.

Abstract: A dynamotor capable of operating as either a motor or a generator is used with both the armature portion and the field portion thereof capable of being rotated. In the case where a pulley operatively interlocked with the output shaft of the prime mover is mounted on the rotary shaft of the armature portion, the drive shaft of the compressor is mounted on the rotating field portion. Once the dynamotor is operated in motor mode, the rotational speed of the compressor is increased to the sum of the input rotational speed and the rotational speed of the dynamotor. The compressor is stopped by disconnecting a power feed circuit. When the input rotational speed is too high, the dynamotor is operated in generator mode. In this way, the rotational speed is reduced in accordance with the generated electric energy.

Abstract: 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.

Abstract: In a compressor connected to a discharge pipe for transferring discharged refrigerant to outside, an oil separator has a near column shaped separation chamber which is formed in a housing and whose one end is opened to a surface of the housing, and a separator pipe having a large diameter portion and a small diameter portion both of which are inserted into the separation chamber. The large diameter portion is press fitted to an inner wall of the separation chamber in a vicinity of the opening end thereof so as to form cylindrical space between the small diameter portion and the inner wall of the separation chamber. Further, the discharged pipe is fluid-tightly connected and directly fixed to the housing at the opening end of the separation chamber.

Abstract: A compressor of scroll type or the like, in which, in order to change the discharge capacity automatically in accordance with the rpm (rotational speed) of a shaft (4) by simple means, the centrifugal force exerted on a movable scroll (9) orbiting with the rotation of the shaft (4) is used as a vibratory force to forcibly vibrate a spool (23) constituting a valve body supported on an elastic member (25), thereby opening and closing bypass holes (22) for establishing communication between a working chamber (V) and a suction chamber (15).