JPS5833459B2 - Kyuutousouchi - Google Patents

Description

[Detailed Description of the Invention] Currently, in water heaters that use liquid fuel, it is not possible to broadly proportionally control the amount of combustion in a part of the burner, so there is a method to increase the amount of hot water stored, store hot water, and use it when necessary. Most of them are.

Furthermore, since combustion is performed under atmospheric pressure, a large combustion chamber is required, resulting in a large overall configuration, which has many disadvantages in terms of installation location, cost, etc.

Furthermore, since a motor such as a pump is required, as well as electricity supply and control equipment, there are disadvantages in terms of running costs and the like.

The present invention makes use of combustion under pressure to reduce the size of the combustion chamber, and further utilizes the mechanical energy generated by pressurized combustion to improve heat exchange efficiency and eliminate electrical energy. The purpose is to provide a small and inexpensive water heater that takes advantage of the wide variation in combustion amount that an engine has.

In the figure, 1 is the internal combustion engine main body, and the operation is the intake pipe 2.
A mixture of fuel and air is sucked in through the intake valve 3, compressed in the combustion chamber 4 by the action of the piston 5, rod 6, and flywheel 70, and ignited and exploded by the ignition device 8.

This force causes the flywheel 7 to rotate.

The combustion gases exit through the exhaust valve 9 and the exhaust pipe 10.

The exhaust pipe 10 is connected to a heat exchanger 12 in a cooling chamber 11,
The heat possessed by the exhaust gas is applied to cooling water, that is, primary hot water, which flows out from the discharge port 13.

Furthermore, the temperature of the primary hot water in the cooling chamber 110 is increased by absorbing the heat within the combustion chamber 4.

The above operations are performed continuously, and the flywheel 7 continues to rotate.

A circulation pump 14 is connected to the flywheel 7 and rotated, and the primary hot water in the cooling chamber 11 is circulated through pipes 15 and 16.

Similarly, an indirect heat exchanger 17 is inserted into the cooling chamber 11, and a city water supply pipe 18 and a hot water supply pipe 20 are connected thereto, and a faucet 21 is present at the tip of the hot water supply pipe 20.

When the internal combustion engine main body 1 is operated, combustion heat in the combustion chamber 4 and exhaust heat flowing through the heat exchanger 12 cause the internal combustion engine 1 in the cooling chamber 11 to
Next hot water is heated.

The circulation circuit consisting of the circulation pump 14 and the pipes 15 and 16 includes a hot water temperature sensing member 22, which is normally filled with a thermally expandable liquid.

When the hot water temperature becomes high, the liquid within the temperature sensing member 22 expands and is connected to the bellows 23 shown in FIG. 2 via a pipe 24, so that the bellows 23 extends upward.

The fuel supply valve controls the fuel supply to the combustion chamber 4, and when the internal valve body 26 reaches 26', it increases the fluid resistance from the flow path 27 to the intake pipe 2, as shown in Fig. 3. Controls the operation of the configured fuel mixer 28.

That is, the fuel mixer 28 introduces the fuel 32 in the fuel tank 31 through the pipe 33 using the negative pressure generated by the venturi 30 according to the amount of air from the air supply pipe 29 .

When the fluid resistance from the flow path 27 to the intake pipe 2 increases, the negative pressure becomes smaller, the fuel supply becomes smaller, and the amount of combustion in the combustion chamber 4 becomes smaller.

Therefore, the hot water temperature of the circulation pump 14 is maintained at a constant value.

When the hot water temperature decreases, the opposite of the above operation is performed and the primary hot water temperature in the cooling chamber 11 increases.

Next, when the faucet 21 is opened, city water enters from the city water supply pipe 18 and the indirect heat exchanger 17 converts the heat of the primary hot water in the cooling chamber 11 into hot water, which flows out from the faucet 21.

At this time, the primary hot water in the cooling chamber 11 is flowing by the circulation pump 14, and the city water in the indirect heat exchanger 17 is also flowing, so the city water in the heat exchanger 17 is also flowing. The exchanger can deliver a large amount of hot water to the faucet 21 quite efficiently.

When the indirect heat exchanger 17 transfers heat, the temperature of the primary hot water in the cooling chamber 11 decreases, so the liquid in the temperature sensing member 22 contracts, the bellows 23 moves downward, and the valve body moves from 24' to 24 by the spring 34. Go back with force.

Then, the fluid resistance from the flow path 27 to the intake pipe 2 decreases, so that more fuel is supplied from the fuel mixer 28, and the amount of combustion in the combustion chamber 4 increases.

Since the above operations are carried out proportionally, 1
The temperature of the hot water is kept constant, and optimal heating is always applied no matter how much hot water is dispensed from the faucet 21.

As explained above, since the present invention uses pressurized combustion, the amount of combustion can be varied considerably, and the size of the combustion chamber can be extremely small compared to other combustion under atmospheric pressure.

Furthermore, if the amount of combustion can be changed over a wide range, only the necessary amount of combustion can be performed, and there is no need to store a large amount of primary hot water as in the past.

Furthermore, the air necessary for combustion is self-suctioned by the action of the piston.
The pump also uses power from internal combustion equipment, so no special electrical energy is required.

Furthermore, in the present invention, a hot water sensing member is provided in the primary hot water circulation path, and this sensing member is configured to control the amount of fuel to the internal combustion engine. It is possible to detect even temperature more accurately than by measuring temperature, and this detection then controls the fuel amount as described above, so the combustion amount can be controlled in accordance with the primary hot water temperature. The temperature of the secondary hot water can be maintained at the set value, allowing for comfortable hot water supply.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a water heater showing an embodiment of the present invention, FIG. 2 is a sectional view of a temperature control section, and FIG. 3 is an explanatory diagram of a fuel supply section. 1...Internal combustion engine body, 3...Intake valve,
5... Piston, 8... Ignition device, 9
... Exhaust valve, 12 ... Heat exchanger, 14
... Circulation pump, 17 ... Indirect heat exchanger.

Claims (1)

[Claims] 1 The cooling water of the internal combustion engine body, which has intake and exhaust valves, ignition devices, and pistons, is used as primary hot water, and an indirect heat exchanger that uses hot water for hot water supply as secondary hot water is inserted into this primary hot water, and this internal combustion Exhaust gas from the engine body is introduced into a heat exchanger disposed in the primary hot water, and a circulation pump that circulates the primary hot water is driven by the power of the internal combustion engine, and a circulation pump is connected to the primary hot water circulation path. A hot water supply device comprising a hot water temperature sensing member and controlling the amount of fuel to the internal combustion engine using the sensing member.