Abstract: A waste heat collecting system for an internal combustion engine has an object to collect waste heat from the engine and make most use of the collected waste heat to achieve the maximum effect of improving fuel consumption ratio. The waste heat utilizing system has a waste heat collecting cycle for collecting waste heat from an internal combustion engine and having an expansion device for generating rotational driving force from the collected waste heat, a refrigerating cycle having a compressor device for compressing a refrigerant and a power transmitting means rotationally driven by a driving force generating means and operatively connected to the compressor device to rotationally drive the same. In this system, the expansion device is operatively connected to the compressor device to rotationally drive the same.

Abstract: In a refrigerating device comprising waste heat utilization equipment having: a refrigerating cycle 200 formed by sequentially connecting a compressor 210, a condenser 220, an expansion valve 240, and an evaporator 250; and a Rankine cycle 300 formed by sequentially connecting a heater 310 using the waste heat of a heat generating device (for example, an internal combustion engine) 10 as a heating source, an expansion device 320, the above-mentioned condenser 220, and a pump 330, in which the drive shafts of the compressor 210 and the expansion device 320 are separated from each other. Then, the output of the expansion device 320 is used mainly for generating electricity.

Abstract: In a refrigerating device comprising waste heat utilization equipment having: a refrigerating cycle 200 formed by sequentially connecting a compressor 210, a condenser 220, an expansion valve 240, and an evaporator 250; and a Rankine cycle 300 formed by sequentially connecting a heater 310 using the waste heat of a heat generating device (for example, an internal combustion engine) 10 as a heating source, an expansion device 320, the above-mentioned condenser 220, and a pump 330, in which the drive shafts of the compressor 210 and the expansion device 320 are separated from each other. Then, the output of the expansion device 320 is used mainly for generating electricity.

Abstract: A fluid machine according to the present invention has an expansion device for collecting waste heat from an internal combustion engine and converting the collected heat energy into mechanical rotational force, an electric rotating device selectively operating as an electric power generator and as an electric motor, and a pump device for pressurizing refrigerant for Rankine cycle, wherein those components are operatively connected with each other by a single rotating shaft. When starting up Rankine cycle, the electric rotating device is operated as the electric motor, so that the pump device is driven to pressurize and pump out high pressure refrigerant. Once the expansion device starts its operation, the electric rotating device is rotated by the expansion device and therefore the operational mode of the electric rotating device is switched over to the power generating mode.

Abstract: 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.

Abstract: A fluid machine has a scroll type expansion device which is operated by a high temperature high pressure refrigerant. The refrigerant is heated by use of waste heat from an engine for a vehicle. The fluid machine further has a motor generator for generating electric power when it is driven by a rotational force produced at the expansion device, wherein a rotating shaft of the motor generator is coupled to a movable scroll of the expansion device via a crank mechanism. A biasing member is provided for biasing the crank mechanism in a direction that the movable scroll wrap is separated from a contact in a circumferential direction with a fixed scroll wrap. Pressure of the refrigerant in a working chamber in the center portion is thereby equalized to the pressure in the outer peripheral portion, at a startup period of the expansion mode.

Abstract: A fluid machine for a waste heat collecting system for an internal combustion engine has an object to make most use of the collected waste heat and an operation of a compressor, an alternator or the like by a rotational driving force from an expansion device function well even during an engine running is stopped. The fluid machine according to the present invention has a pulley connected to the engine, an expansion device for generating a rotational driving force from the collected waste heat, a compressor device driven by the pulley and the expansion device, wherein a rotating shaft is commonly used for the pulley, the expansion device and the compressor device. The expansion device is an expansion device for changing its expansion volume, so that the Rankine cycle for collecting the waste heat can be operated most effectively.

Abstract: A fluid machine for a waste heat collecting system for an internal combustion engine has an object to make most use of the collected waste heat and an operation of a compressor, an alternator or the like by a rotational driving force from an expansion device function well even during an engine running is stopped. The fluid machine according to the present invention has a pulley connected to the engine, an expansion device for generating a rotational driving force from the collected waste heat, a compressor device driven by the pulley and the expansion device, wherein a rotating shaft is commonly used for the pulley, the expansion device and the compressor device. The expansion device is an expansion device for changing its expansion volume, so that the Rankine cycle for collecting the waste heat can be operated most effectively.

Abstract: In a refrigerating device comprising waste heat utilization equipment having: a refrigerating cycle 200 formed by sequentially connecting a compressor 210, a condenser 210, an expansion valve 240, and an evaporator 250; and a Rankine cycle 300 formed by sequentially connecting a heater 310 using the waste heat of a heat generating device (for example, an internal combustion engine) 10 as a heating source, an expansion device 320, the above-mentioned condenser 220, and a pump 330, in which the drive shafts of the compressor 210 and the expansion device 320 are separated from each other. Then, the output of the expansion device 320 is used mainly for generating electricity.

Abstract: An air conditioning system for a vehicle has a cool storage heat exchanger for continuing cooling operation with stored cooling energy during a compressor is stopped due to a temporal stop of an engine for the vehicle. Cooling energy is stored in the cool storage material of the cool storage heat exchanger during a normal cooling operation during which the compressor is operated by the engine. When the vehicle stops, for example before a traffic lamp, and thereby the compressor is not operated, an ejector is operated to circulate the refrigerant from the cool storage heat exchanger to an evaporator so that the cooling operation can be continued.

Abstract: An air conditioning system for a vehicle has a cool storage heat exchanger for continuing cooling operation with stored cooling energy during a compressor is stopped due to a temporal stop of an engine for the vehicle. Cooling energy is stored in the cool storage material of the cool storage heat exchanger during a normal cooling operation during which the compressor is operated by the engine. When the vehicle stops, for example before a traffic lamp, and thereby the compressor is not operated, an ejector is operated to circulate the refrigerant from the cool storage heat exchanger to an evaporator so that the cooling operation can be continued.

Abstract: An object of the invention is to provide a rankine cycle suitable for a use for a motor vehicle. In a waste heat collecting system having the rankine cycle and a refrigerating cycle, when ECU receives an air-conditioning signal from A/C ECU, the refrigerating cycle is operated, by preceding the operation of the rankine cycle. In the case that there is no air-conditioning signal and a temperature of an engine cooling water is higher than a predetermined value, the rankine cycle is operated.

Abstract: An object of the invention is to provide a rankine cycle suitable for a use for a motor vehicle. In a waste heat collecting system having the rankine cycle and a refrigerating cycle, when ECU receives an air-conditioning signal from A/C ECU, the refrigerating cycle is operated, by preceding the operation of the rankine cycle. In the case that there is no air-conditioning signal and a temperature of an engine cooling water is higher than a predetermined value, the rankine cycle is operated.

Abstract: A fluid machine according to the present invention has an expansion device for collecting waste heat from an internal combustion engine and converting the collected heat energy into mechanical rotational force, an electric rotating device selectively operating as an electric power generator and as an electric motor, and a pump device for pressurizing refrigerant for Rankine cycle, wherein those components are operatively connected with each other by a single rotating shaft. When starting up Rankine cycle, the electric rotating device is operated as the electric motor, so that the pump device is driven to pressurize and pump out high pressure refrigerant. Once the expansion device starts its operation, the electric rotating device is rotated by the expansion device and therefore the operational mode of the electric rotating device is switched over to the power generating mode.

Abstract: 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.

Abstract: A fluid machine for a waste heat collecting system for an internal combustion engine has an object to make most use of the collected waste heat and an operation of a compressor, an alternator or the like by a rotational driving force from an expansion device function well even during an engine running is stopped. The fluid machine according to the present invention has a pulley connected to the engine, an expansion device for generating a rotational driving force from the collected waste heat, a compressor device driven by the pulley and the expansion device, wherein a rotating shaft is commonly used for the pulley, the expansion device and the compressor device. The expansion device is an expansion device for changing its expansion volume, so that the Rankine cycle for collecting the waste heat can be operated most effectively.

Abstract: A swing member is supported by a swing support member like a universal joint of a Hook's type such that it can swing in a state where it is prevented from rotating around a center line. In this manner, even if a shaft rotates at high speed, the swing member is surely prevented from rotating around the shaft. Therefore, it is possible to prevent a piston from excessively vibrating, hence to prevent large noises from being made, and to improve reliability and durability of a compressor when the compressor is operated at high speed.

Abstract: A waste heat collecting system for an internal combustion engine has an object to collect waste heat from the engine and make most use of the collected waste heat to achieve the maximum effect of improving fuel consumption ratio. The waste heat utilizing system has a waste heat collecting cycle for collecting waste heat from an internal combustion engine and having an expansion device for generating rotational driving force from the collected waste heat, a refrigerating cycle having a compressor device for compressing a refrigerant and a power transmitting means rotationally driven by a driving force generating means and operatively connected to the compressor device to rotationally drive the same. In this system, the expansion device is operatively connected to the compressor device to rotationally drive the same.

Abstract: A scroll-type compressor for realizing the operating condition of complete 0% capacity without using an electromagnetic clutch. In order to minimize the power loss, a compliance crankshaft mechanism for allowing the orbiting radius of the movable scroll member to change steplessly to zero is interposed between a shaft and a scroll member. A guide hole having an inclined surface such as a two-step conical surface is formed at the end plate of the movable scroll member. A plunger adapted to engage by advancing toward and retracting from the guide hole is supported on a housing. When the plunger is advanced into the guide hole under the control of a control operation device including a control pressure chamber and a control valve, the movable scroll member moves radially, so that the amount of eccentricity and the orbiting radius thereof are reduced to achieve the 0% capacity.

Abstract: A variable displacement compressor includes a linking groove, which forms a hinge for connecting an arm and an inclining member. The groove is generally U-shaped (open). A link pin is fitted in the groove such that the link pin can pivot or slide within the groove. As a result, installation of a movable parts assembly, which is done by inserting the link pin into the groove, is easier. A controlled pressure chamber improves the response of the compressor to controls.