摘要:
A viscous fluid type heat generator having a heat generating chamber in which heat generation by the viscous fluid is carried out in response to the rotation of a rotor element applying a shearing action to the viscous fluid, a heat receiving chamber in which heat exchanging liquid flows to receive heat from the heat generating chamber, a heat generation control chamber containing the viscous fluid to be supplied into the heat generating chamber and receiving the viscous fluid withdrawn from the heat generating chamber. The heat generator has a fluid supplying passage for supplying the viscous fluid from the heat generation control chamber into the heat generating chamber, a fluid withdrawing passage for withdrawing the viscous fluid from the heat generating chamber into the heat generation control chamber, and a flap valve deformable to open and close one of the fluid supplying and fluid withdrawing passages in response to a change in the heating requirements. The flap valve cooperates with a valve seat having a construction to reduce surface tension of the viscous fluid acting on the flap valve to thereby promote accurate and quick valve action of the flap valve.
摘要:
A viscous fluid type heat generator having a heat generating chamber in which viscous fluid is confined to frictionally generate heat by an application of shearing action due to rotation of a rotor element rotated by a drive shaft, a heat receiving chamber arranged adjacent to the heat generating chamber to permit heat exchanging liquid to receive heat from the viscous fluid within the heat generating chamber during flowing through the heat receiving chamber, partitioning walls arranged in the heat receiving chamber to define a plurality of radially inner and outer concentric annular liquid passages between a liquid inlet for entrance of the heat exchanging liquid and a liquid outlet for delivery of the heat exchanging liquid, and a liquid guide arranged in a position adjacent to the liquid inlet to divert a part of the heat exchanging liquid entering the heat receiving chamber toward the radially outermost liquid passage in the heat receiving chamber.
摘要:
A viscous fluid type heater including a heating chamber and a heat exchange chamber, which is adjacent to the heating chamber. The heating chamber contains viscous fluid and a rotor. The heat exchange chamber is connected to a coolant circuit. The rotor is rotated by a drive shaft to shear the viscous fluid and produce heat in the heating chamber. The heat is transferred to the heat exchange chamber from the heating chamber to heat coolant passing through the heat exchange chamber and circulating in the fluid circuit. The heating chamber has a rear wall. The rotor has a rear surface facing the rear wall. Viscous fluid located between the wall and the rotor is sheared when the rotor rotates. A support shaft is supported by the rotor. The support shaft is eccentrically coupled to the drive shaft, which forces the viscous fluid located between the wall and the rotor to be periodically displaced. This prevents prolonged heating of any part of the fluid, which extends the life of the fluid.
摘要:
A multiple axes drive apparatus having a plurality of electrostatic actuators for applying driving forces in a plurality of different directions within a plane to a driven member. Each electrostatic actuator of the drive apparatus includes a first member that has a plurality of first electrode strips arranged in a single direction with a predetermined pitch, and a second member that has a plurality of second electrode strips arranged in the same direction as the first electrode strips with the same pitch. The members are located opposite to each other so one of the members moves along the single direction in response to a Coulomb force generated between the electrode strips when voltage is applied to the electrode strips.
摘要:
A viscous fluid type heat generator adopted for being incorporated in a heating system of an automobile has a generally cylindrical hollow housing assembly in which a rotor element in the shape of an axially elongated hollow cylindrical element is rotatably received by being supported on a rotating drive shaft. The elongated rotor element has an outer circumference and end faces to cooperate with an inner wall of the housing assembly to define a heat generating chamber filled with viscous fluid, and a spiral heat receiving chamber hermetically separated from the heat generating chamber and permitting heat exchanging liquid to spirally flow therein to thereby receive heat from the heat generating chamber. The outer circumference of the elongated rotor element has a radius R and an axial length L designed so as to have such a relationship that L is larger than R.
摘要:
An air conditioning system includes an compressor 110 having a driving chamber 110, a suction port 116 and a discharge port 121, a first passage 107 that connects the discharge port 121 to the driving chamber 110 by opening a capacity control valve 140, a second passage 105 that connects the driving chamber 110 to the suction port 116 and a driving means 130 that can change the output discharge capacity of the compressor by changing the pressure in the driving chamber 110. The refrigerant can be released from the driving chamber 110 to the suction port 116 separately from the second passage 105 if the driving chamber reaches a predetermined high-pressure state. In such an air conditioning system, abnormally high pressure problems are overcome that utilizes a hot gas bypass heater. In particular, heating performance is improved, because high pressure refrigerant is not released from the hot gas bypass heater circuit into the cooling circuit. Further, an excessively high-pressure state in the driving chamber 110 can be prevented.
摘要:
An air conditioning system 100 may include a cooling circuit 151, a heating circuit 152 and a variable displacement compressor 101 as a driving source for both the heating and cooling circuits and may be utilized in a vehicle-mounted air conditioning system. In such case, the driving shaft 125 of the compressor 101 is connected to and driven by a car engine 170. In order to decrease the compressor output discharge capacity during an abnormally high pressure state, high-pressure refrigerant in the discharge chamber 120 is released into the driving chamber 110 to increase the driving chamber pressure. The high-pressure refrigerant can be released from the discharge chamber 120 into the driving chamber 110 utilizing a variety of different structures.
摘要:
A hybrid compressor selectively driven by an engine and an electric motor. The hybrid compressor includes a variable displacement compression mechanism. When the compression mechanism is driven by the motor, the cooling capacity of a refrigeration circuit that includes the hybrid compressor is adjusted by controlling the inclination of the swash plate and the motor speed. In the control procedure, the inclination angle of the swash plate and the motor speed are controlled so that the compression mechanism and the motor are most efficiently operated to achieve the required cooling capacity. Therefore, the hybrid compressor is constantly operated with maximum efficiency.
摘要:
An air conditioning system 100 may include a compressor 101 having a driving chamber 111, a heating circuit 310 and a controller 203. This system may release high pressure refrigerant from the compressor discharge port 141 into the compressor driving chamber 111 by opening a capacity control valve 181 when the discharge pressure of the refrigerant discharged from the compressor 101 exceeds a predetermined reference value. By increasing the pressure within the driving chamber 111, the compressor discharge capacity can be reduced. As a result, the discharge pressure of the compressor 101 will be reduced by the reduction in the compressor discharge capacity. Further, the controller 203 may decrease the reference value in accordance with a value related to change in the discharge pressure. As a result, the capacity control valve 181 can be opened at an early stage of the increasing of the discharge pressure if the discharge pressure increases rapidly.
摘要:
A rotation balancing mechanism of an orbiting scroll of a scroll-type compressor that reduces the outer diameter of the compressor housing. A compression mechanism includes a fixed scroll and an orbiting scroll. The compression mechanism is coupled to a support frame at the front of a drive motor. A drive crankshaft is located between the drive shaft of the motor and a base plate of the orbiting scroll. The drive crankshaft causes the orbiting scroll to orbit. Follower crankshafts are located between the support frame and the base plate. The follower crankshafts permit the orbiting scroll to orbit and prevent the orbiting scroll from rotating about its own axis. A central balance weight is located on the drive crankshaft. The central balance weight opposes part of the centrifugal force that is applied to the drive crankshaft when the orbiting scroll orbits. Outer balance weights are attached to the follower crankshafts to oppose the remainder of the centrifugal force.