JPS61280307A - Liquid fuel burner - Google Patents

Abstract

PURPOSE:To save energy in a liquid fuel burner with a plurality of burners for hot water supplier, etc. by providing the carburetor with a heater and supplying the heat from the burners which are connected to the carburetor through a heat pipe. CONSTITUTION:A fuel pump 5 is operated by a control device 13, and electric power is supplied to a heater 10 incorporated in a carburetor 2A and an opening and closing valve 8A is opened. By this arrangement the fuel is supplied to burners 1A via heaters 10 and combustion occurs. The combustion heat heats the heat absorbing section 111 of a heat pipe 11 and operates the heat pipe 11. Accordingly heat is radiated from the heat radiation section 112 of the heat pipe 11 to each of carburetors 2A-2D. Next, when the heat transportation amount in the heat pipe 11 becomes sufficient, a control device 13 shuts off the electricity supply to the heater 10. With this constitution energy saving can be contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a liquid fuel combustion device that is used in water heaters, hot water boilers, hot air heaters, etc., and heats liquid fuel to vaporize and burn it.

(b) Prior Art This type of conventional liquid fuel combustion apparatus is generally of a type in which liquid fuel such as kerosene is sent from a fuel supply device to a vaporizer, vaporized by a heater, and then combusted by a burner. However, this method is uneconomical because it consumes a lot of electrical energy.

Therefore, as disclosed in Japanese Patent Application Laid-Open No. 58-19618, there is a method in which the combustion heat of a burner is transported to a vaporizer using a heat pipe to vaporize the fuel, and a method disclosed in Japanese Patent Application Laid-Open No. 55-1441
As disclosed in Japanese Patent No. 3, a system has been proposed in which an oil feed pipe communicating with a fuel tank and a vaporizer is extended to the vicinity of a burner, and the fuel is directly vaporized by the combustion heat of the burner.

These have the advantage that when the heat of combustion becomes sufficiently large, the heat generation of the heater can be stopped and the liquid fuel can be vaporized, resulting in energy savings. However, when performing multi-stage combustion using a plurality of burners, the former method requires as many heat pipes and heaters as the number of burners, which has the disadvantage of increasing the cost of the device. In addition, in the latter case, the oil supply pipe is long, so the power of the fuel supply system must be made thicker.

C1 Problems to be Solved by the Invention The problem to be solved by this invention is to heat and vaporize fuel and burn it in multiple stages using multiple burners, without making the device IIT expensive or requiring large amounts of power. The aim is to save labor and labor by making effective use of this.

(C) Means for Solving the Problems In order to solve the above problems, the liquid fuel combustion device of the present invention includes a plurality of burners, a plurality of vaporizers each communicating with each of these burners, and a plurality of vaporizers communicating with each of these burners. a fuel supply device that sequentially supplies liquid fuel to the vaporizers through respective on-off valves;
It is equipped with a heater installed in the vaporizer to which liquid fuel is first supplied, and a heat pipe placed in a position to receive the combustion heat of the burner communicating with this vaporizer. This is the configuration inserted into.

(E) When liquid fuel is supplied to the first vaporizer from the fuel supply device through the first on-off valve, the fuel is vaporized in the first vaporizer using a heater.

Then, the vaporized fuel 1 is sent from the first vaporizer to the first burner, and combustion starts in the first burner.

When combustion is performed in the first burner, the heat pipe is heated, and the combustion heat of the first burner is transported to the heat radiation section inserted in each vaporizer. Therefore, even if the heater stops generating heat, the first vaporizer uses combustion heat to vaporize the fuel and continues combustion in the burner. Next, when the second and third on-off valves are opened and fuel is supplied to the second and third vaporizers, the combustion heat transported by the heat pipe is used to vaporize the fuel, so the second and third on-off valves are opened. , combustion begins in the third burner.

As described above, according to the present invention, fuel can be vaporized using one heater and one heat pipe, and can be burned in multiple stages using a plurality of burners, thereby simplifying the apparatus. In addition, it is sufficient to energize the heater of the first vaporizer until the combustion heat of the first burner is transported by the heat pipe, and then the combustion heat of the first burner is supplied to each vaporizer. Since the fuel is vaporized, less electrical energy is consumed. Furthermore, since the fuel supply device only needs to send the liquid fuel to each vaporizer, the power required can be reduced compared to the conventional system that directly vaporizes the liquid using the combustion heat of the burner.

(f) Example Embodiments of this invention shown in the drawings will be described below.

In the figure, CIA) or ID) is four burners installed in parallel, (2 people) or 2D) is a burner (IA) or ID), and a nozzle opening/closing valve (3A) or 3D) is connected to the burner (IA) or ID), respectively. (414-1 fuel tank (not shown), fuel pump (5), distributor (6), distributor (6) and carburetor (2 people) or 2D
), and a normally closed on-off valve (8A) or 8D) consisting of a solenoid valve installed in each of the liquid sending pipes (7A) or 7D). This is a fuel supply device. (9) is a spark plug placed near the burner (IA), and is built into the carburetor (2 people): Hee-J-1fi11! [ff1M (11
1) The heat dissipation section (112) arranged along the Kahana (IA) K and having heat dissipation fins (12
) or 2D), and is a heat pipe inserted into L
A working fluid that changes into two gas-liquid phases is sealed inside a bent metal tube. 031 sequentially opens the on-off valve (8A) or 8D) according to the load of hot water supply or heating, and
This is a control device that controls the operation of the fuel pump (5) and controls the energization of the spark plug (9) and heater tuner. The nozzle opening/closing valve (3A) or 3D) is one that opens when the temperature or pressure inside the vaporizer (2 persons) or 2D) exceeds a certain value.

Prior to combustion, the control device 0 first operates the fuel pump (5), energizes the heater aα built in the carburetor (two), and opens the on-off valve (8A). At this time, liquid fuel such as kerosene in the fuel tank is transferred to the liquid pipe (
7A), is supplied to the vaporizer (2A), and heated in the heater roller 01. Then, when the fuel in the carburetor (2A) is heated under sufficient pressure and vaporized, the nozzle on-off valve (3A) opens 7, and the vaporized fuel is transferred from the vaporizer (2 people) to the burner (IA).
). For this reason, control device 0 controls the spark plug (
When 9) is activated, combustion starts at the base (IA).

When combustion is performed in the burner (IA), the endothermic part (111) of the old heat pipe 1 is heated. And Burna (
The combustion heat of the IA) is transferred to the heat dissipation part (11) of the heat pipe (Ill).
2) and transported from the heat dissipation section (112) to the vaporizer (2 people)
or 2D) K is released. As a result, when the heat transfer amount of the heat pipe (111) reaches a value sufficient to vaporize the fuel, the control device Q31 turns off the power to the heater (IQI). The combustion heat is used to vaporize the fuel, and the burner (IA) combusts this vaporized fuel.

In this way, when the combustion heat of the burner (IA) is transported to the vaporizer (2 persons) or 2D) by the heat pipe 01), the control device Q3 controls the on-off valve (8
B) to 8D) are opened continuously, and the liquid fuel is sent to the vaporizer (2B) to 2C). And the vaporizer (2
After the fuel B) or 2D) is vaporized by the combustion heat of the burner (IA), it is supplied to the burner (IB) or ID) via the nozzle opening/closing valve (3B) or 3D), respectively. Burn.

According to this embodiment, liquid fuel is supplied to the vaporizer (two persons) equipped with the heater Ql, vaporized fuel from the vaporizer (two persons) is supplied to the burner (IA) for combustion, and the burner The combustion heat of (IA) is transferred to a vaporizer (2 people) or 2D)
The heat pipe (111) was used to transport the fuel, and the combustion heat was then used to vaporize the fuel, so one heater OI and one heat pipe were used to transport the fuel using the burner (IA) or ID). Multi-stage combustion can be performed, and the device can be simplified and reduced in cost. Also, when the combustion heat of the burner (1 person) is transported to the vaporizer (2 people) or 2D), the heater (II
The energization of the heater 0α can be stopped, and the energization time of the heater 0α can be shortened.
For example, a small capacity device that only heats the fuel in A) is sufficient.
You can save electrical energy. Moreover, Burna (IA)
combustion heat is transported to the vaporizer (2 persons) or 2D via the heat pipe (111),
) only needs to supply liquid fuel to the vaporizer (2 people or 2D), the fuel can be circulated close to the burner, and the piping can be shorter than that for vaporization, and the fuel pump (5
) can be used with small power.

(g) Effects of the invention Since this invention is configured as described above, fuel is heated and vaporized using one heater and one heat pipe, and multistage combustion is performed using a plurality of burners. This makes it possible to simplify the device and reduce costs, while also making efficient use of combustion heat to save electrical energy and promote energy savings. Moreover, since the method is one in which the heat of combustion is transported at once, the fuel piping is shorter than in a method in which the fuel is directly vaporized using the heat of combustion, and the power of the fuel supply device can be reduced.

[Brief explanation of the drawing]

The figure is a schematic configuration diagram showing an apparatus according to an embodiment of the present invention. (IA) ~ (ID)... Burner, (2 people) ~ (2D
)... Carburetor, (4)... Fuel supply device, (
8A) to (8D)...Opening/closing valve, 0(11...Heater, ato...Heat pipe, (112)...Heat radiation part.

Claims (1)

[Claims] (1) A plurality of burners, a plurality of vaporizers communicated with each of these burners, a fuel supply device that sequentially supplies liquid fuel to each of these vaporizers via an on-off valve, and A heater is installed in the vaporizer to which the vaporizer is supplied, and a heat pipe is installed in a position to receive the combustion heat of the burner communicating with the vaporizer, and the heat dissipation part of the heat pipe is inserted into each vaporizer. A liquid fuel combustion device featuring: