JPH0886508A - Heating device for water tank mounted on motorcar - Google Patents

Abstract

PURPOSE: To heat water in a water tank mounted on a motorcar safely without effecting no-water burning. CONSTITUTION: In an engine cooling device, consisting of an engine 7, a radiator 8 and a circulation route for circulating cooling water for the engine 7 between the engine 7 and the radiator 8, the engine 7 is provided with a circulating route for circulating cooling water for the engine 7 between the engine 7 and a water tank 2 mounted on a motorcar, further, a water sensor 12 for detecting the upper limit and the lower limit of water level in the water tank 2 is provided in the water tank 2. When the upper limit and the lower limit of water in the water tank 2 are detected by the sensor 12, respective detecting signals are inputted into a CPU 13 while the CPU 13 switches a solenoid switching valve 10 and a two-way switching valve 11 into the circulating route between the engine 7 and the radiator 8 when the signal is the upper limit signal of the sensor 12 but these two valves 10, 11 are switched into the circulation route between the engine 7 and the water tank 2 when the lower limit of the water level is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for a water tank mounted on an automobile, and more particularly to a device for heating water in the water tank by using engine cooling water of the automobile. is there.

[0002]

2. Description of the Related Art As a heating device for a water tank conventionally mounted on an automobile of this kind,
It is known that kerosene is burned to heat the water in the water tank. Thus, in order to burn kerosene, this device pierces a hole in an automobile roof, inserts a chimney into the hole, and connects the chimney to a kerosene burning furnace to discharge smoke from the chimney to the atmosphere. Then, the temperature of the water in the water tank is adjusted by controlling the combustion of the kerosene using a temperature controller.

Therefore, kerosene and a combustion furnace for the kerosene must be separately mounted on the vehicle, and the smoke emitted from the chimney also causes air pollution. Further, the kerosene is burned while the vehicle is running. May suddenly disappear and emit non-combustible gas, or if water in the water tank is insufficient, it may cause rattling, which is extremely dangerous.

Therefore, a technical problem to be solved in order to eliminate the rattling phenomenon of the water in the water tank and to safely heat the water in the water tank without the need for a special combustion furnace for kerosene or the like. Problems arise, and an object of the present invention is to solve the problems.

[0005]

The present invention has been proposed in order to achieve the above object, and has a circulation system passage between the engine and the radiator for circulating the cooling water of the engine. The engine cooling device further comprises a circulation path for circulating cooling water of the engine between the engine and a water tank mounted on an automobile, and the water tank further contains the water. A sensor for detecting the upper limit and the lower limit of the water in the tank is provided, and when the upper and lower limits of the water in the water tank are detected by the sensor,
The respective detection signals are input to the CPU, which switches the electromagnetic switching valve and the two-way switching valve to the circulation path between the engine and the radiator when the upper limit signal of the sensor is detected, and the engine when the lower limit is detected. A heating device for a water tank mounted on an automobile configured to be switched to a circulation path between the water tanks.

[0006]

Function: Water is injected into the water tank mounted on the automobile. Thus, the engine cooling water circulation path provided between the water tank and the engine is in a normally open state. Therefore, as the engine is started and the automobile runs, the cooling water of the engine rises to about 85 ° C. At this time, when the heated cooling water passes through the inside of the water tank, The water is cooled to lower the temperature, the engine is cooled again, the temperature is raised to about 85 ° C., and the water in the water tank is heated.

Thus, when the water in the water tank rises to the upper limit position of approximately 45 ° C., the sensor provided in the water tank detects the upper limit temperature, for example, 45 ° C., and the detection Input a signal to the CPU. When the detection signal is input, the CPU outputs an operation command to switch the electromagnetic switching valve, switches the electromagnetic switching valve, shuts off the circulation system path between the engine and the water tank, and connects the engine and the radiator. The circulation path of the engine is opened, and the engine is cooled by the engine cooling water whose temperature has been lowered via the radiator.

Further, when the temperature of the water in the water tank reaches the lower limit temperature, for example, about 40 ° C., the sensor detects the lower limit temperature and causes the CPU to input the detection signal, and the CPU switches the electromagnetic switching. An operation command for switching the valve is output to switch the electromagnetic switching valve to the circulation path between the engine and the water tank. Therefore, the circulation path of the engine cooling water between the engine and the radiator is cut off, and the cooling water of the engine is circulated between the engine and the water tank to cool the engine and heat the water in the water tank. The water in the water tank is again raised to the upper limit temperature of 45 ° C. Thus, the water in the water tank is kept at a predetermined temperature and transported to the destination, and can be used as hot water for bathing, for example, the bedridden elderly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 is a partially cutaway perspective view of an automobile 1, on which a water tank 2 is mounted. Further, a water supply hose 3 for supplying water to the water tanks 2 and 2 and a hot water supply hose 4 for taking out heated hot water from the water tank 2 are provided.

The automobile 1 is also equipped with a bathtub 5 and a bathing tanker 6 separately for bathing a bedridden elderly person. Water is stored in the water tank 2, and a device for heating the water in the water tank 2 will be described with reference to FIGS. 2 and 3. In the figure, reference numeral 7 denotes an engine. When the cooling water of the engine 7 circulates in a circulation path X formed between the engine 7 and the radiator 8, the temperature is lowered by the radiator 8 and the engine 7 is cooled. Reference numeral 9 denotes a thermostat, which is opened when the cooling water around the engine 7 rises to about 85 ° C., and the cooling water circulates through the circulation system to cool the engine 7. ing.

On the other hand, Y is a circulation passage of engine cooling water provided between the engine 7 and the water tank 2. Therefore, the electromagnetic switching valve 10 is provided on the outward side of the cooling water from the engine.
Is provided, and it can be switched to either the X circulation path or the Y circulation path by switching the electromagnetic switching valve 10. At this time, a two-way switching valve 11 is provided at the confluence of the radiator 8 and the water tank 2 on the return path side of the cooling water to switch to either the X or Y circulation system path. Is configured.

A sensor 12 for detecting the temperature of water contained in the water tank 2 is provided in the water tank 2. The sensor 12 detects an upper limit temperature and a lower limit temperature when the water temperature in the water tank 2 rises to, for example, 45 ° C. and when the water temperature drops to 40 ° C.
Although input to the sensor 13, the sensor 12 may be separately provided to detect the upper limit temperature and the lower limit temperature separately.

Reference numeral 14 in the drawing is a pump. Thus, the electromagnetic switching valve 10 is always directly connected to the Y circulation system road side. Therefore, the engine 7 is started and the automobile 1
When the vehicle is driven, the temperature of the cooling water of the engine 7 rises as the engine 7 heats, and the Y
When the cooling water of the engine circulates in the circulation system of
The water in the water tank 2 is heated by the heated engine cooling water. At this time, the cooling water cools itself to cool the engine 7 again and at the same time raises the temperature itself, and then heats the water in the water tank 2 again. In this way, when the cooling water circulates in the Y circulation path, if the water in the water tank 2 reaches the upper limit, for example, 45 ° C., the water tank 2
A sensor 12 provided inside detects the upper limit temperature,
Then, the detection signal is input to the CPU 13. The C
When the upper limit temperature is input, the PU outputs an operation command for switching the electromagnetic switching valve 10 to the X circulation system path side, and switches the electromagnetic switching valve 10 to the X circulation system path side. At this time,
The two-way switching valve 11 also switches from the Y side to the X side. In this way, the engine 7 is cooled by the cooling water cooled through the radiator 8.

When the water temperature in the water tank 2 drops and reaches a lower limit of 40 ° C., the sensor 12 detects the lower limit temperature and causes the CPU 13 to input the detection signal. CPU 1 to which the detection signal of the lower limit temperature has been input
Reference numeral 3 outputs an operation command for switching the electromagnetic switching valve 10 to the Y circulation system path to switch the electromagnetic switching valve 10 to the Y circulation system path. Further, the two-way switching valve 11 is also switched from the X side to the Y side, and the cooling water of the engine circulates through the circulation path on the Y side to cool the engine 7. The water inside is again heated to the above-mentioned upper limit temperature.
Moreover, by alternately performing such an operation, the water temperature in the water tank 2 is maintained near the upper limit. Therefore, if the running car 1 reaches, for example, a bedridden old man's house, the bathing is performed. The tanker 6 is removed, the bedridden old man is placed on the bathing tanker 6 and carried to the bathtub 5, and the bathtub 5 is bathed. Of course, the hot water in the water tank is naturally contained in the bathtub 5.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified one. When no water is stored in the radiator 8, the radiator 8 is manually or automatically operated via the thermostat 9 as in the conventional case.
It is configured to switch to the X circulation path with the side.

[0016]

As described in detail in the above one embodiment, the present invention uses the cooling water for cooling the engine of the automobile to heat the water in the water tank mounted on the automobile. Unlike devices that heat kerosene by burning it,
While driving a car, there is no fear of pollution due to combustion of kerosene or pollution due to raw gas, etc., and it is extremely safe without causing the water in the water tank to rattle, and is economically advantageous. It is an invention that exhibits various kinds of effects.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG. 1 is an automatic partially cutaway oblique view in which the device of the present invention is mounted.

FIG. 2 is a block diagram showing a system passage of engine circulating water of the present invention.

FIG. 3 is a block diagram showing another path of engine circulating water according to the present invention.

[Explanation of symbols]

 1 Automotive 2 Water Tank 7 Engine 8 Radiator 10 Electromagnetic Switching Valve 11 Two-way Switching Valve 12 Sensor 13 CPU

Claims (1)

[Claims] 1. An engine cooling device having a circulation path for circulating cooling water of the engine between the engine and a radiator, the engine being connected to a water tank mounted on an automobile. Is also provided with a circulation path for circulating the cooling water of the engine, and further, a sensor for detecting an upper limit and a lower limit of water in the water tank is provided in the water tank, and the sensor is provided. When the upper limit and the lower limit of the water in the water tank are detected, the respective detection signals are input to the CPU, and the CPU turns on the electromagnetic switching valve and the two-way switching valve,
Installed in an automobile characterized in that it is configured to switch to the circulation path between the engine and the radiator when it is the upper limit signal of the sensor, and to switch to the circulation path between the engine and the water tank when the lower limit is detected. Water tank heating device.