JPH0120175Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a combustion type heater for automobiles that uses kerosene, light oil, or gasoline as fuel to blow hot air into the interior of the vehicle.

(Prior art) Conventional combustion heaters for automobiles that use kerosene, diesel oil, or gasoline as fuel have a heat exchanger installed adjacent to the combustion chamber, heat air or water in this heat exchanger, and heat the heated air or water. A fluid is used as a heat source, and conventionally there is one as shown in FIG. 4, as disclosed in Japanese Utility Model Application Publication No. 58-194362.

The combustion type heater includes a combustion chamber 1, a nozzle 2 that spouts fuel such as kerosene, diesel oil, or gasoline into the combustion chamber 1, a plug 3 that ignites the spouted fuel, and a blower 4 that supplies combustion air. , a primary chamber 5a adjacent to the combustion chamber 1 and receiving heat from the combustion chamber;
and a heat exchange section having a secondary chamber 5b through which heated air in the vehicle interior heated by this heat flows, and the fuel ejected from the nozzle 2 is ignited by the plug 3 and starts combustion. The heating air flowing through the secondary chamber 5b of the heat exchange section 5 was heated by combustion heat.

(Problems to be Solved by the Invention) However, in such a combustion type heater, since the fuel is directly injected, there is some fuel that cannot be completely vaporized, resulting in poor ignitability. In order to eliminate this inconvenience, a fuel derivative made by bundling refractory wires in the combustion chamber so that the fuel passes through the gaps between the refractory wires is arranged near the plug, and the heat of the plug is used to Combustion heaters for automobiles that vaporize and ignite fuel have recently been proposed.

However, in such combustion type heaters for automobiles, if an ignition error occurs or if the plug heat during combustion is insufficient, the fuel may not be sufficiently vaporized, and the fuel may flow from the fuel derivative to the combustor body. There is a risk of dripping, and the fuel may be further led to the exhaust port connected to the combustor body.

Therefore, this idea was devised by paying attention to these actual circumstances.It has good ignitability, prevents dripping fuel from entering the exhaust port, etc., and vaporizes all the dripping fuel. The purpose of the present invention is to provide a combustion-type heater for automobiles.

(Means for solving the problem) In order to achieve the above object, this invention installs a combustor body adjacent to a heat exchanger that guides air, and connects a plug that ignites fuel to the combustor body. In a combustion type heater that is installed protruding into a combustion chamber, a supporter having a fuel receiving chamber communicating with a fuel supply pipe is attached to the combustor main body, a large number of refractory wires are bundled, and a supporter is installed between the refractory wires. A starting end of a fuel guide formed by providing a gap for fuel guiding is made to protrude into the fuel receiving chamber and attached to the supporter, the fuel guide is disposed along the vicinity of the plug, and the fuel guide A combustion type heater for an automobile, characterized in that a fuel absorbing material for absorbing fuel dripping from the combustor body is disposed on the inner wall surface of the lower part of the combustor main body.

(Example) Hereinafter, an example of this invention will be described based on the drawings.

1 to 3 are views showing one embodiment of this invention, in which FIG. 1 is a sectional view of a combustion type heater for an automobile, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIG. FIG. 3 is a perspective view showing the structure of a fuel guide and a fuel absorbent.

That is, the combustion type heater 11 shown in FIG.
A combustor main body 12 having a combustion chamber 12a, a heat exchanger 13 that exchanges heat with the combustor main body 12,
a plug 14 protruding into the combustion chamber 12a; a fuel derivative 15 mounted near the plug 14;
Below the fuel derivative 15, the combustor main body 12
and a fuel absorbing material 16 provided therein.

Therefore, as shown in FIG. 3, the fuel derivative 15 is constructed by bundling a large number of steel wires 15a as refractory wires, so that elongated gaps are formed between the steel wires 15a.
The tip of the fuel derivative 1 is bent into an L-shape.
5 is fixed with a binding tool 20 made of a noncombustible material such as metal. Further, a box-shaped supporter 17 is attached to the upper inner wall of the combustor main body 12, and a fuel supply pipe 18 for supplying fuel to the supporter 17 from above the combustor main body 12.
has been established. Then, the tip end of the fuel guide 15 is directed toward the plug 14 side, and the starting end 15b
As shown in FIGS. 1 and 3, by projecting from below a rectangular opening 17a formed on the bottom surface of the supporter 17 into a fuel receiving chamber 17b formed inside the supporter 17, The fuel guide 15 is press-fitted into the supporter 17, and the steel wire 15a at the starting end 15b is pushed outward toward the tip. Furthermore, in order to absorb the fuel dripping from the fuel guide 15, a fuel absorbing material 16 is installed under the fuel guide 15, as shown in FIG. The fuel absorber 1
No. 6 absorbs the dripping fuel by using heat-resistant and fire-resistant materials such as glass fiber, asbestos, sintered metal, and foamed metal.

Here, the plug 14 is connected to the combustor main body 1.
Insert the fuel guide 15 from the upper surface of the plug 14, and connect the tip of the plug 14 with the fuel guide 1.
5 is fixed to the upper surface of the combustor main body 12 with a predetermined distance therebetween. The combustor main body 12 has a fuel derivative 15 in the combustion chamber 12a.
An air supply pipe 19 is attached to supply combustion air toward the combustion chamber.

Next, the effect will be explained.

First, by heating the plug 14, the fuel derivative 15 formed of the steel wire 15a is heated, and then fuel is supplied by a pump or the like to the fuel receiving chamber 17b formed in the supporter 17 through the fuel supply pipe 18. At the same time, the fuel descends through the gap between the steel wires 15a formed in the fuel guide 15, and the fuel reaches the tip of the fuel guide 15.
Since the fuel derivative 15 is heated by the plug 14, the falling fuel is vaporized and ignited by the plug 14, so that the fuel burns continuously. Furthermore, the fuel that has not been vaporized is absorbed by the fuel absorbing material 16 to prevent it from flowing into the exhaust port, etc., and the dropped fuel is vaporized by the heat in the combustion chamber 12a to assist combustion. Furthermore, the plug 14 stops heating after igniting the fuel. After that, the fuel is vaporized by the combustion heat of the fuel itself.

Here, as shown in FIG. 1, the combustion chamber 12
By feeding air from the air supply pipe 19 into the combustor main body 12 while maintaining combustion,
Heat the whole thing. Then, by exchanging heat between the hot air flowing through the combustor main body 12 and the hot water passing through the heat exchanger 13, the heat of this hot water is used to supply hot air into the vehicle interior with a fan. This hot water is
For example, a portion of engine cooling water is guided to a heat exchanger.

In the above embodiment, hot water, which is part of the engine cooling water, was used as the fluid passing through the heat exchanger 13, but air may be used instead of the hot water. This makes it possible to directly send heat-exchanged air into the vehicle interior, thereby increasing heat exchange efficiency.

As another embodiment of the present invention not shown, a container for storing the dripped fuel is formed on the inner wall surface of the combustor main body 12 below the fuel guide 15, and a fuel absorbing material 16 is installed in the container. It is also possible to achieve the intended purpose.

Further, in each of the above-described embodiments, a steel wire is used as the refractory wire, but the intended purpose can also be achieved by using a fiber having heat and fire resistance as the refractory wire.

(Effects of the invention) As explained above, this invention attaches a supporter having a fuel receiving chamber communicating with a fuel supply pipe to the combustor main body, and bundles a large number of refractory wires. The starting end of a fuel guide formed with a gap for fuel guide between them projects into the fuel receiving chamber and is attached to the support, the fuel guide is disposed along the vicinity of the plug, and the fuel guide By disposing a fuel absorbing material on the inner wall surface of the lower part of the combustor body, the fuel vaporizes quickly and improves ignitability. By absorbing the dropped fuel with the fuel absorbing material, the fuel is prevented from flowing into the exhaust port, etc., and all of the dripping fuel is vaporized by the heat inside the combustion chamber, which has an extremely excellent effect of assisting combustion.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a combustion type heater for an automobile showing an embodiment of this invention, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 3 shows the structure of the fuel guide and fuel absorber. The perspective view and FIG. 4 are cross-sectional views of a conventional combustion type heater for automobiles. 11... combustion type heater, 12... combustor main body,
12a... Combustion chamber, 13... Heat exchanger, 14...
Plug, 15... fuel derivative, 15a... steel wire,
15b... Starting end portion, 16... Fuel absorbing material, 17...
...Supporter, 17b...Fuel receiving chamber, 18...Fuel supply pipe.

Claims (1)

[Scope of utility model registration request] A combustion type heater in which a combustor main body 12 is installed adjacent to a heat exchanger 13 that guides a fluid to be heated, and a plug 14 that ignites fuel is attached to protrude into the combustion chamber 12a of the combustor main body 12, A supporter 17 having a fuel receiving chamber 17b communicating with the fuel supply pipe 18 is attached to the combustor main body 12, and a large number of refractory wire rods 15a are bundled to form the refractory wire rod 1.
The starting end 15b of the fuel guide 15, which is formed by providing a gap for fuel guide between the fuel guides 5a, projects into the fuel receiving chamber 17b and is attached to the support 17, and the fuel guide 15 is attached to the support 17. A combustion type heater for an automobile, characterized in that a fuel absorbing material 16 is disposed along the vicinity of the combustor main body 12, and a fuel absorbing material 16 for absorbing fuel dripping from the fuel derivative 15 is disposed on a lower inner wall surface of the combustor main body 12.