摘要:
Noise is caused in a piston type compressor having a valve assembly including reed valves (13F, 14F) and a valve plate (10F) when the reed valves close and strike against the valve plate. The present invention provides a piston type compressor having a valve assembly including an elastic member (21F) and a thin valve sheet (20F) between the valve plate (10F) and the reed valves (14F), so that a shock caused by the reed valves striking the valve plate is absorbed, and the elastic member is protected by the thin valve sheet from damage usually caused by the striking thereof by the reed valves.
摘要:
A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The drive shaft is connected to the compression unit for driving the compression unit. Imbalance on the drive shaft is generated due to movement of the compression unit. The balancer is mounted on the drive shaft and includes a main portion and adjustable portion for correcting the imbalance on the drive shaft. Preferably, at least one of the weight and the shape of the adjustable portion is adjustable.
摘要:
A heating system incorporating a heat generator confining therein a heat-generative fluid to viscously generate heat when a shearing action is applied to the fluid by a rotor element, and a heat-generation controller including a heat-generation adjusting actuator which adjustably changes the heat-generating performance of the heat generator on the basis of a signal detected as a first control signal indicating a change in the rotating speed of the rotor element and a preset reference signal. A second control signal detected to indicate a temperature of the heat-generative fluid is used to adjustably change the preset reference signal. The operation of the heating system is controlled by a method in which the first control signal is compared with the preset reference signal to determine whether or not the heat-generation adjusting actuator should actuated to change the heat-generating performance of the heat generator. The method is performed so as to adjust the preset reference signal on the basis of the second control signal which is detected by a temperature sensor.
摘要:
An improved viscous fluid heater is disclosed. The heater has a rotor that is operably coupled to a drive shaft. The rotor is disposed in a heating chamber filled with viscous fluid. The rotor is rotated with the drive shaft to shear the viscous fluid and generate heat in the heating chamber. The rotor has a flat rotor body and a boss. The boss has an axial length greater than that of the rotor body. A mechanism is provided with at least the boss. The mechanism mounts the rotor on the drive shaft and transmits torque of the drive shaft to the rotor.
摘要:
A climate control system incorporated in a motor vehicle having a hydraulic pump directly driven by a vehicle engine to deliver a working oil under pressure to be supplied to either a hydraulic motor for driving a refrigerant compressor of an air-conditioning system or a heat conversion unit of the heating system via a hydraulic flow control valve for controlling the flow direction of the working oil. The air-conditioning system has an evaporator for cooling the air supplied to the vehicle compartment. In the heat conversion unit of the heating system, pressure energy of the working oil is converted to thermal energy thereof by which the engine cooling water is heated to thereby heat the air supplied to the vehicle compartment via a radiator unit made of a heater core.
摘要:
A hydraulic driving system uses a variable capacity type swash plate piston pump that discharges a fixed quantity of operation oil. The piston pump is provided with a swash plate and a swash-plate tilt angle control mechanism. The pump is operated by the engine to drawing discharge oil whose quantity corresponds to the tilt angle of the swash plate. An oil passage provided with a restriction, is connected to the discharge side of the piston pump. A control valve functions in accordance with the pressure difference between the input and output sides of that restriction to feed operation oil to the tilt angle control mechanism via the oil passage. A tilt angle generating mechanism in the tilt angle control mechanism, causes the oil controlled by the control valve to act on the swash plate in order to increase its tilt angle. A tilt angle return mechanism in the tilt angle control mechanism urges the swash plate to decrease the tilt angle. A switching valve is provided between the tilt angle generating mechanism and the control valve, and is switchable between at two positions. With the valve located at the first switching position, the action of the operation oil to the tilt angle generating mechanism is suppressed. With the valve set at the second switching position, the operation oil is allowed to act on the tilt angle generating mechanism via the control valve. Consequently, when the pump is driven, the tilt angle is minimized to reduce the load on the engine.
摘要:
An improved hydraulic system for a vehicle includes a swash plate type variable capacity hydraulic pump that is operably coupled to an engine. A hydraulic motor for driving an air conditioning compressor and a power steering hydraulic mechanism having less fluid demand than that of the hydraulic motor are disposed in a first and a second fluid lines respectively. First, second and third nozzles are disposed within the fluid lines. The volume of fluid controlled by the first nozzle is larger than that of the second nozzle, which is larger than that of the third nozzle. The first fluid line is depressurized by the first nozzle when the hydraulic motor is used, while the second fluid line is depressurized by the second nozzle when the power steering mechanism is used. When neither the hydraulic motor nor the power steering mechanism is used, the pressure in the fluid line on the circulation side is reduced to nearly zero by the third nozzle. The hydraulic cylinder is coupled to a swash plate, and a tracer valve adjusts the quantity of fluid in a hydraulic cylinder to control the inclination angle of the swash plate, as a function of the pressure in the fluid on the hydraulic pump side and the pressure in the depressurized fluid line on the power steering mechanism side.
摘要:
A compressor includes a housing member having a through hole. The compressor includes a conductive portion through which external electricity is supplied to a motor mechanism. The conductive portion has a lead extending from the motor mechanism, and a connector terminal. The connector terminal is connected to the lead to permit the external electricity to be conducted to the lead. The connector terminal is attached to the through hole such that a joint between the lead and the connector terminal is located in the through hole to face inward of the housing member. A viscoelastic insulating material fills the through hole. Therefore, the compressor ensures reliable insulation of the terminal from a housing member.
摘要:
A fuel cell system includes a fuel cell stack, a hydrogen flowing passage, an air flowing passage and a control valve. At least one of the gas flowing passages includes a bypass, a selecting means, a gas flowing means and a control unit. The bypass allows a gas to flow therethrough so as to detour the fuel cell stack and the control valve. The selecting means selects one of a passage which passes through the fuel cell stack and the bypass. The gas flowing means flows the gas to the bypass. In the control unit, the through passage is selected by the selecting means when the system is operated, The bypass is selected by the selecting means when the operation of the system is stopped. The gas is flowed to the bypass by operating the gas flowing means when the control valve is frozen thereby heating the control valve.
摘要:
An improved viscous heater is disclosed. The viscous heater has a heating chamber accommodating viscous fluid and a rotor. The rotor rotates to shear and heat the viscous fluid. The heating chamber has a pair of inner flat surfaces and an inner peripheral surface. The rotor has a pair of outer flat surfaces that respectively opposes the inner flat surfaces by predetermined gaps and an outer peripheral surface that opposes the inner peripheral surface. The outer peripheral surface has peripheral edge portions each angularly and continuously extending from the outer flat surface. The peripheral edge is chamfered so that the rotor is prevented from interfering with the inner flat surfaces.