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 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.
摘要:
A variable displacement swash-plate type compressor has a swash plate rockably carried by a shaft, and a spool for changing the angle of tilt of the swash plate and also the position of the center of the swash plate, thereby to vary the displacement of the compressor. The compressor has a control valve which determines a control pressure to be supplied to a control pressure chamber behind the spool, between the level of a low-pressure introduced from a low-pressure side of the compressor and a high-pressure introduced from a high-pressure side of the compressor.
摘要:
A hydraulic device having a first shaft including a first rotor, and a second shaft including a second rotor, the first and second rotors being constructed by adjacently fitting the same shape rotor elements, respectively. The rotor elements have teeth on the outer periphery thereof at a constant interval, and each tooth has a tip portion fluid-tightly engaged with an inner wall of a housing of the device. The rotor elements are adjacently fitted to the shaft in such a manner that the rotor elements are displaced in the same rotational direction along the axial direction of the shaft. The teeth tip portions of the rotor elements adjacent to each other are overlapped so that spiral paths are defined on the outer surface of the rotor.
摘要:
An oil separator includes a separation part and an oil storage part. The separation part includes a separation cylinder, an inner cylinder disposed in the separation cylinder and an inlet pipe connecting to the separation cylinder tangential to an inner surface of the separation cylinder. The separation part defines an inlet opening to introduce CO2 refrigerant containing oil in the separation cylinder. The separation cylinder separates the oil from the CO2 refrigerant by means of centrifugal force. A ratio of a flow rate (kg/h) of the CO2 refrigerant flowing in the separation cylinder to an area (mm2) of the inlet opening is at least 4. Alternative to or in addition to the above, a ratio of a distance (mm) from an end of the inner cylinder to a bottom wall of the separation cylinder to an inner diameter (mm) of the separation cylinder is at least 2.5.
摘要:
A compressor comprises an oil separator for separating oil from a refrigerant compressed by a compression mechanism unit, and a high-pressure oil storage chamber for storing the oil separated by the oil separator. At least a portion of the oil separator is provided outside a housing. The high-pressure oil storage chamber has an outer wall that is thicker than the outer wall of the housing accommodating the compression mechanism unit, and an end wall of the housing is formed by this thicker outer wall.
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 vapor-compression refrigerant cycle system with a refrigeration cycle and a Rankine cycle includes a compressor, a radiator, a gas-liquid separator, a decompression device and an evaporator. In the vapor-compression refrigerant cycle system, a liquid pump is disposed for supplying the liquid refrigerant in the gas-liquid separator to a heater for heating the refrigerant, a cooling means is provided for cooling the liquid refrigerant to be sucked into the liquid pump, and an energy recovery unit for expanding the refrigerant flowing out of the heater is disposed to recover thermal energy in the refrigerant from the heater. When the Rankine cycle is set so that the energy recovery unit recovers the thermal energy, the cooling means cools the liquid refrigerant to be sucked into the liquid pump. Therefore, pumping efficiency of the liquid pump can be effectively improved.
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:
A vehicle air-conditioning apparatus for idle-stop 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.