JPH032808U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing a heating device for an automobile that utilizes exhaust heat according to claim 1, FIG. 2 is a flowchart showing the operation of this device, and FIG. A schematic cross-sectional view showing a heating device for an automobile that uses exhaust heat; FIG. 4 is a flowchart showing the operation of this device; FIG. 5 is a cross-sectional view showing an example of a conventional heating device for a car that uses exhaust heat. It is. 1: Exhaust pipe, 2: First exhaust flow path, 3: Second exhaust flow path, 4: Heater, 5: Steam delivery pipe, 6
: Exhaust flow rate adjustment door, 7: Automotive engine, 8
: Duct, 9: Condenser, 10: Return pipe, 11
:Liquid reservoir, 12: Gate valve, 13: Blower, 14:
Controller, 15: Actuator, 16, 17: Temperature sensor, 18: Bypass flow path, 19: Air mix door, 20: Blower, 21: Actuator, 22: Controller, 23: Inside/outside air switching door, 2
4: Inside air intake, 25: Outside air intake, 2
6: Evaporator, 27: Heater core, 28: Distribution chamber, 29: Controller.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) First and second exhaust channels provided in parallel with each other in the middle of an exhaust pipe through which exhaust gas discharged from an automobile engine flows, and a second exhaust flow path. A heater provided in the passage, a steam delivery pipe with one end connected to the steam outlet of the heater, and a steam delivery pipe provided upstream of the first and second exhaust passages, and the steam sent to the second exhaust passage. an exhaust flow rate adjustment door that adjusts the amount of exhaust gas being discharged; a condenser that is placed in a duct that circulates heating air and has a steam inlet connected to the other end of the steam delivery pipe; and one end connected to the outlet of the condenser. a return pipe that returns the working fluid condensed and liquefied in the condenser to the heater; a bypass flow path provided in parallel with the condenser in the duct; In an automotive heating system that utilizes exhaust heat, the air mix door is provided to adjust the proportion of air flowing into the bypass flow path and the condenser, and a variable speed blower is used to ventilate the inside of the duct. , a controller is provided for limiting the range of movement of the air mix door based on a signal representing the speed of the blower, and the controller is configured to: when the heater is in operation and the blower is at a low operating speed;
The air mix door is movable only within the range where the passage toward the condenser is close to fully open, and when the speed is also medium, the air mix door is movable only when the passage toward the condenser is from half open to fully open. A heating device for an automobile that utilizes exhaust heat, characterized in that the air mix door is configured such that the passage leading to the condenser can be freely moved in the range from slightly open to fully open. (2) First and second exhaust passages provided in parallel with each other in the middle of an exhaust pipe through which exhaust gas discharged from an automobile engine flows, and a heater provided within the second exhaust passage. , a steam delivery pipe whose one end is connected to the steam outlet of the heater, and an exhaust pipe provided upstream of the first and second exhaust channels to adjust the amount of exhaust gas sent into the second exhaust channel. A flow rate adjustment door, a condenser placed in a duct that circulates heating air, and having a steam inlet connected to the other end of the steam delivery pipe, and one end connected to the outlet of this condenser, and condensed and liquefied in the condenser. a return pipe for returning the working fluid to the heater; a bypass flow path provided in the duct in parallel with the condenser; and a bypass flow path provided upstream of the bypass flow path and the condenser; A heating system for an automobile that utilizes exhaust heat and is comprised of an air mix door that adjusts the proportion of air flowing between the air mixer and the air mixer door, is provided with a controller that switches the exhaust flow rate adjusting door based on the opening degree of the air mixer door, and The controller is characterized in that the exhaust flow rate adjusting door can be switched to a state in which exhaust gas is sent to the heater only when the air mix door sufficiently opens a passage toward the condenser. A heating device for automobiles that uses exhaust heat.