JPH0585376B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heating device for a vehicle that rapidly heats the interior of an automobile driven by an internal combustion engine.

(Conventional technology) Conventionally, indoor heating in automobiles takes out the cooling water of the internal combustion engine through hot water piping, passes it through the heater body consisting of a heater core and blower, and sends air into the heater body to heat it. or one that heats the room by burning fuel in a burner regardless of the internal combustion engine, uses the generated heat to heat the room, and directs the combustion gas itself to the engine intake manifold. No. 59-106869) is used.

(Problems with conventional technology) In this method of using internal combustion engine cooling water for indoor heating, the temperature of the cooling water rises slowly, so it takes time for the heater body to send out hot air. During this time, the heating function of the heater is lost. In particular, it takes more than 10 minutes for a gasoline engine and more than 20 minutes for a diesel engine to complete the heating function of an internal combustion engine. During this period, there were inconveniences such as the inside of a car being cold in cold regions, requiring people to wear winter clothing, and the defroster, which removes frost, ice, etc. from vehicle windows, not working properly. Furthermore, when the vehicle is traveling down a long downhill slope, the temperature of the cooling water drops and the cooling water cannot be supplied for heating. In particular, diesel engines are compression ignition type engines, so they are sensitive to exhaust gas temperature or cooling water temperature relative to engine load, and the above-mentioned drawbacks are noticeable. Furthermore, diesel engines are sensitive to combustion in cold weather, and produce significant white smoke and odor due to incomplete combustion.

In addition, heating methods that use fuel separately from the engine require troublesome treatment of fuel odors and exhaust gas, and require complicated control mechanisms and control devices, which have the disadvantage of increasing costs. However, there will still be problems in terms of environmental pollution. Furthermore, when the blower is used while the engine is stopped, the amount of electricity stored in the battery is rapidly consumed, and if the blower is used for a long time, it becomes impossible to start the engine.

(Objective of the Invention) The object of the present invention is to solve the above-mentioned problems related to indoor heating of the conventional internal combustion engine, to eliminate the need for a complicated control mechanism, to eliminate the problem of environmental pollution, and to quickly heat the engine after starting. An object of the present invention is to provide a heating device for a vehicle that can obtain warm air and also to obtain a power source for a blower from the combustion heat of a combustor during heating.

(Summary of the Invention) In order to achieve the objects of the present invention as described above, the present invention provides a combustor provided in the middle of an intake pipe of an engine, and a heat exchanger for exchanging heat generated in the combustor into heat for heating. a first blower provided at the tip of an intake pipe of the engine; a combustor provided between the blower and the intake side of the engine; and heat generated from the combustor. a heat exchanger that exchanges heat into heating heat, a heater core provided between the inlet and outlet of the heat exchanger, a second blower that blows warm air into the vehicle, and a heater core provided downstream from the heat exchanger. an exhaust port provided in the intake pipe of the engine, a first switching valve mechanism that switches the intake pipe between two directions: the intake side of the engine and the exhaust port, and a second switching valve mechanism that switches the air from the second blower to the heat exchanger and the heater core. Provided is a vehicle melting/heating device characterized by comprising a second switching valve mechanism that switches between directions, and a thermoelectric generating element that generates electricity using heat generated from a combustor and supplies the generated electricity to a first blower. do.

(Embodiment) FIG. 1 is a block diagram showing the basic configuration of an embodiment of a vehicle heating system according to the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.

In FIG. 1, combustion air is supplied from a blower 1 to a combustor 2, and becomes combustion gas in the combustor 2.
This combustion gas is supplied to the heat exchanger 3 and then exhausted to the outside of the vehicle or supplied to the intake pipe of the engine. The combustor 2 is supplied with fuel from a fuel tank (not shown), and the combustor 2 is equipped with a rapid vaporizer that rapidly vaporizes the fuel and an ignition device that ignites the vaporized fuel. . Rapid vaporizers vaporize fuel by heating a heating element made of, for example, a resistance wire. Note that a wick type vaporizer may be used instead of the rapid vaporizer. Air conditioning blower 4 is installed in heat exchanger 3.
The air is supplied to the vehicle, is heated by exchanging heat with combustion gas in the heat exchanger 3, and is supplied to the interior of the vehicle as heating air. Air from the air conditioning blower 4 is supplied into the vehicle through a heater core 6, and heating air control valves 5 are provided at the inlet and outlet of the heater core 6 to direct the air from the air conditioning blower 4 to the heat exchanger 3. It is configured to control whether it is directed toward the heater core 6 or toward the heater core 6. When the engine is started, the heating air control valve 5 closes the heater core, sends air from the air conditioning blower 4 to the heat exchanger 3, and rapidly heats the interior of the vehicle. Thereafter, when the engine enters a normal operating state, the heating air control valve 5 stops supplying air to the heat exchanger 3, and a conventional heating system using a heater core 6 is activated. In addition,
The aforementioned combustor 2 is provided separately from the combustor provided in the intake pipe of a conventional engine.

Next, in FIG. 2, in addition to the configuration shown in FIG. 1, an exhaust control valve 9 is provided downstream from the heat exchanger 3 and before the combustion gas is exhausted outside the vehicle. The control valve 9 is controlled to supply combustion gas to the intake pipe 10 of the engine, and the combustor 2 is provided with a thermoelectric generator 8, which is connected to the blower 1 via a switch 11 instead of the battery 7. configured to supply electrical power. Note that the power from the thermoelectric generating element 8 is also supplied to the air conditioning device. In this embodiment, the combustion gas is not only used to recover heat by the heat exchanger 3, but also supplied to the engine intake pipe and used as an engine starting aid. Further, since the thermoelectric generating element 8 is provided, electric power can be used effectively.

(Effects of the Invention) As explained above, the present invention provides a combustor and a heat exchanger separately from the combustor provided in the intake pipe of the engine, and rapidly burns fuel into combustion gas.
Since the heat of the combustion gas is recovered by a heat exchanger and used as a heating heat source, indoor heating can be effectively performed immediately before starting the engine.

Furthermore, according to the present invention, even when the engine is cold in cold weather, the combustion gas from the combustor can be sent to the engine, so the engine can be started quickly, and the exhaust gas produces blue-white smoke. This prevents odors and odors and improves engine performance.

Furthermore, according to the present invention, the combustion gas that has passed through the heat exchanger from the combustor is directly exhausted to the outside or guided into the engine, so there is no need to deal with combustion odor or exhaust gas. , there are fewer problems with environmental pollution.

In addition, even when the engine is stopped, the power for the blower is obtained from the combustion heat of the combustor, so there is no possibility that the battery power will decrease rapidly.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of a vehicle heating system according to the present invention, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1... Ventilator, 2... Combustor, 3... Heat exchanger, 4... Air conditioning blower, 5... Heating air control valve, 6... Heater core, 7... Battery, 8
...Thermal power generation element, 9...Exhaust control valve, 10...Intake pipe, 11...Switch.

Claims (1)

[Scope of Claims] 1. A heating system for a vehicle comprising a combustor provided in the middle of an intake pipe of an engine and a heat exchange means for exchanging heat generated in the combustor into heat for heating, comprising: a first blower provided at the tip of the tube; a combustor provided between the blower and the intake side of the engine; a heat exchanger that exchanges heat generated from the combustor into heating heat; A heater core provided between the inlet and outlet of the heat exchanger, a second blower that blows warm air into the vehicle, an exhaust port provided in the intake pipe downstream of the heat exchanger, and the intake pipe. The first switch can be switched between two directions: the intake side and the exhaust port of the engine.
A switching valve mechanism, a second switching valve mechanism that switches air from the second blower to two directions, the heat exchanger and the heater core, and the heat generated from the combustor to generate electricity,
A vehicle heating and melting device characterized by comprising: a thermoelectric generating element that supplies generated power to a first blower.