摘要:
A control apparatus and method for controlling an automotive heater apparatus. The heater apparatus includes a coolant circuit for cooling an engine, a coolant circulating through the circuit, a heat generator for transferring heat to the coolant, and a heater core for transferring heat from the coolant. The heat generator houses a viscous fluid and a rotor selectively connected to and disconnected from the engine by a clutch. The clutch connects the engine with the rotor to shear the viscous fluid and generate heat. When the rotating speed of the rotor exceeds a rotor speed limit, which varies in accordance with the detected coolant temperature, the clutch disconnects the rotor of the heat generator from the engine and de-activates the heat generator.
摘要:
A viscous fluid type heat generating apparatus having a housing forming a cylindrical heat-generating chamber having a cylindrical wall surface and an axially spaced flat annular wall surface, and a rotatably supported rotor element having a cylindrical base portion and an axially extending tubular portion integral with the base portion forming a substantially cylindrical outer face and a cavity portion used as a fluid-storing chamber, the cylindrical portion of the rotor element cooperating with the cylindrical wall surface of the housing to define a main part of a heat-generating gap holding a viscous fluid which generates heat in response to an application of a shearing force to the viscous fluid in response to the rotation of the rotor element. The heat generating apparatus further having an intercommunicating passage providing a fluid communication between the heat-generating gap and the fluid storing chamber to thereby cause a circulation of the viscous fluid during the rotation of the rotor element, and a flow rate controlling actuator controlling an amount of circulation of the viscous fluid in response to a change in the rotating speed of the rotor element.
摘要:
A viscous heater is provided with a front side plate 2 and a rear side plate 3, which are arranged so that a heat generating chamber 5 is formed between their facing back surfaces and which are stored in a housing so that heat emission chambers FW and RW are formed between the side plates and the housing. The housing is formed by a front housing having a tubular part 1c which extends axially for storing the front and side plates radially inwardly of the tubular part 1c and a rear housing 4. Thus, sealing is necessary only at a location where the front and rear housings 1 and 4 are connected with each other. Thus, a very simple structure is sufficient for preventing any leakage of the recirculated fluid.
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 including a housing assembly defining therein a heat generating chamber and a heat receiving chamber, a drive shaft rotatably supported by the housing assembly, a rotor element mounted to be rotationally driven by the drive shaft for rotation within the heat generating chamber, and a viscous fluid, held in a gap defined between the inner wall surfaces of the heat generating chamber and the outer surfaces of the rotor element, for heat generation under shearing stress applied by the rotation of the rotor element. At least a part of the housing assembly, which defines the heat generating chamber, is made of a material of which a linear expansion coefficient is larger than that of a material of the rotor element.
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 generation control chamber for containing the viscous fluid to be supplied into the heat generating chamber and receiving the viscous fluid withdrawn from the heat generating chamber so that an ability of quickly increasing and decreasing the heat generating performance of the heat generator is achieved in response to a requirement for a change in the supply of heat to be exchanged with a heat exchanging liquid of a heating system. The heat generator has a fluid supplying passage, a fluid withdrawing passage, a fluid supplying recessed groove in the heat generating chamber, and a subsidiary fluid supplying passageway which are arranged so as to provide a fluid communication between the heat generating chamber and the heat generation control chamber. The heat generating performance is quickly reduced by withdrawing the viscous fluid from the heat generating chamber into the heat generation control chamber via the fluid withdrawing passage, and the heat generating performance is quickly increased by supplying the viscous fluid from the heat generation control chamber into the heat generating chamber via the fluid supplying and subsidiary fluid supplying passages.
摘要:
A viscous fluid type heat generator having a heat generating chamber in which heat generation by the viscous fluid is performed in response to the rotation of a rotor element applying a shearing action to the viscous fluid, a heat receiving chamber in which a heat exchanging liquid flows to receive heat from the heat generating chamber, a heat generation control chamber for 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 to the heat generating chamber, a fluid withdrawing passage for withdrawing the viscous fluid from the heat generating chamber into the heat generation control chamber, a flap valve deformable to open and close the fluid withdrawing passage in response to a change in a heating requirement, and a valve deformation supplementing means to provide the flap valve with additional deformation effect to quickly and timely open the flap valve. The valve supplementing means may be a subsidiary fluid port to introduce therein the viscous fluid from the heat generating chamber so as to cause a supplementary deformation of the flap valve.
摘要:
The viscous type heat generator includes a housing having a heating chamber and a heat radiating chamber. A rotor is rotatably arranged in the heating chamber so that a viscous fluid is subjected to a shearing action to generate heat. The rotor is fitted on a drive shaft in such a manner that the rotor can not rotate but can move axially relative to the drive shaft. The front and rear end surfaces of the rotor have wedge effect producing means for correcting an axial offset of the rotor in the heating chamber by the wedge effect caused by the pressure of viscous fluid while the rotor is rotating. This wedge effect producing means comprises at least three inclined recesses extending in the circumferential direction, the bottoms of which become gradually shallower in the direction opposite to the rotational direction of the rotor. The inclined recesses are arranged at circumferentially regular intervals and at radially equal positions from the center of the rotor.
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:
A viscous heater as an auxiliary heating source in a heating system for a vehicle having a water cooled internal combustion engine. The viscous heater has an inlet port 14 for the engine cooling water and an outlet 15 for the engine cooling water, which are connected to respective conduits in the engine cooling system by means of a coupling device. The coupling device include coupling pipes 50A and 50B which are connected to the respective conduits in the engine cooling system at respective directing angles to allow the coupling pipes 50A and 50B to be aligned with the respective conduits.