JPH0522751Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a water heating device for an automobile, and more specifically to a water heating device installed in a sightseeing bus or the like.

(Prior Art) In recent years, as automobile engines have become smaller and more sophisticated, there has been a tendency for automatic braking capabilities, including engine braking capabilities, to decrease relative to engine output. For this reason, retarders are installed in addition to regular brakes and exhaust brakes to improve the braking force of automobiles.

FIG. 1 is a diagram schematically showing the structure of an automobile equipped with a retarder. As is clear from this diagram, the retarder 1 is installed on the back side of the engine 2, and is connected to the crankshaft of the engine 1, for example. It consists of a rotor formed on the circumferential surface of a flywheel and a stator 4 formed on a flywheel cover 3. Power is generated by rotating a rotor attached to the circumferential surface of the flywheel in a magnetic field induced by supplying current to the stator 4 from a power source. The generated current is caused to generate heat by a resistor 5, and is then cooled by air cooling, for example. In other words, the rotational energy of the crankshaft is converted into electrical energy and consumed to brake the vehicle.

Furthermore, in recent years, tourist buses have become more luxurious year by year, and more and more buses are now being manufactured that are equipped with wash basins, water heaters, and the like. However, the energy used in such water heaters has generally been equipped with an energy source for conventional water heating, which has resulted in a considerable increase in cost.

(Purpose of the invention) The invention was made in view of the above points,
The purpose is to reduce costs by using the electrical energy generated by the retarder to heat water.

(Structure of the invention) In order to achieve the above object, the water heater for an automobile according to the invention includes a retarder for converting the rotational energy of an automobile engine into electric energy and reducing the rotational energy, and an electric power generated by the retarder. It is characterized by having a water heating device section that boils water using energy, and a load resistor that discharges the electrical energy as thermal energy when the electrical energy is not consumed in the water heating device section.

(Embodiment) FIG. 2 shows a schematic diagram of an embodiment of the water heater according to the present invention installed in a large vehicle such as a bus, and FIG. 3 is a system diagram thereof.

As is clear from these figures, the floor surface 6 of the automobile
A retarder 1 is provided on the back of an engine 2 provided at the bottom of the engine. The electrical energy generated by this retarder 1 is sent to the control device 7,
The control device 7 is a heater 81 of the water boiling device section 8.
Electric power is transmitted to the water heater unit 8 to boil water in the water heater unit 8.

FIG. 3 shows such a system in more detail. As is clear from FIG. 3, a retarder 1 is provided on the back of the engine 2, and electrical energy generated by the retarder 1 when braking the automobile is sent to a control device 7. Control device 7
sends this electrical energy to the heater 81 of the water heating device section 8. The water heating device section 8 includes a tank 82
and the heater 81, and the heater 81 is designed to raise the temperature of the water in the tank 82.

The hot water thus boiled is taken out, for example, from a faucet 9 to a washbasin 10 (see FIG. 2) and used for washing or drinking.

In this embodiment, the water heating device section 8 is
It has a temperature sensor 83, and this temperature sensor 8
3 is designed to be able to detect the temperature of the water inside the tank 82. Information from the temperature sensor 83 is sent to the control device 7. The control device 7 receives information from the temperature sensor 83 and supplies electrical energy from the retarder 1 to the heater 81 when the hot water temperature is lower than a predetermined temperature range, and on the other hand, when the hot water temperature is higher than the predetermined temperature range. In some cases, a current is sent to a load resistor 5, by which heat is generated and dissipated, for example by air cooling.

This structure not only allows the electrical energy generated by the retarder to be used as an energy source for heating water, but also has the advantage of maintaining the temperature of the water in the water heating device at an appropriate temperature.

(Effects of the invention) As explained above, the automotive water heating device according to the invention uses electrical energy generated by the retarder to boil water, so it has the advantage of not requiring a special energy source for heating water. occurs. Another advantage is that by using a control device, it is possible to maintain the boiled water at an appropriate temperature.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of an automobile engine equipped with a retarder, Fig. 2 is a schematic diagram of an automobile equipped with a water boiler according to the present invention, and Fig. 3 is a schematic diagram of an embodiment of the water boiler according to the present invention. . DESCRIPTION OF SYMBOLS 1... Retarder, 2... Engine, 5... Load resistor, 7... Control device, 8... Water heating device part.

Claims (1)

[Scope of utility model registration request] A water heating device for an automobile, comprising: a retarder for converting the rotational energy of an automobile engine into electrical energy and reducing the rotational energy; a water heating device unit for boiling water using the electrical energy generated by the retarder; and a load resistor for discharging the electrical energy as thermal energy when the electrical energy is not consumed by the water heating device unit.