JPH0120173Y2 - - 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. 6, as disclosed in Japanese Utility Model Application Publication No. 194362/1983.

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 is installed near the plug, in which refractory wires are bundled together in the combustion chamber so that the fuel passes through the gaps between the refractory wires, and the heat of the plug is used to fuel the fuel. Recently, a combustion type heater for automobiles has been proposed that vaporizes and ignites.

However, if the refractory wires are simply bundled in this way, the fuel may not flow well within the fuel derivative due to the bundling condition and the degree of bending of the refractory wire steel wire, but may instead flow on the surface of the fuel derivative. There was a problem in that the fuel did not reach the tip of the refractory wire.

Therefore, this invention was devised in view of the above-mentioned circumstances, and its purpose is to provide a combustion type heater for automobiles with good ignitability.

(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 cooling water, and connects a plug that ignites fuel to the combustor body. In a combustion type heater that is attached to protrude into the combustion chamber of a combustor main body, a supporter having a fuel receiving chamber communicating with a fuel supply pipe is attached to the combustor main body, and a large number of refractory wire rods are bundled and the refractory wire rods are The starting end of the fuel guide, which is formed by providing a gap for fuel guide between the two, protrudes into the fuel receiving chamber, and the refractory wire at the starting end is pushed outward toward the tip to support the support. The plug is attached to the plug, and the fuel derivative is disposed along the vicinity of the plug.

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

1 and 2 are views showing one embodiment of this invention, in which FIG. 1 is a sectional view of a combustion type heater for an automobile, and FIG. 2 is a perspective view showing the structure of a fuel dielectric.

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,
It consists of a plug 14 protruding into the combustion chamber 12a and a fuel guide 15 mounted near the plug 14.

Therefore, as shown in FIG. 2, 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.
The vicinity of the leading edge of 5 is fixed with a binding tool 20 made of a noncombustible material such as metal. Further, the combustor main body 1
A box-shaped supporter 17 is attached to the upper inner wall of the combustion chamber 2, and a fuel supply pipe 18 for supplying fuel to the supporter 17 from above the combustor main body 12 is provided. And the fuel derivative 15
with the tip end facing the plug 14 side and the starting end 1
5b protrudes from below a rectangular opening 17a formed at the bottom of the supporter 17 into a fuel receiving chamber 17b formed inside the supporter 17, as shown in FIGS. 1 and 2. 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. Here, the fuel derivative 15 is inserted into the plug 14 from the upper surface of the combustor main body 12, and the plug 14
4 and the tip of the fuel guide 15 are fixed to the upper surface of the combustor main body 12 so as to maintain a predetermined distance from each other. An air supply pipe 19 is attached to the combustor body 12 for supplying combustion air to the fuel guide 15 within the combustion chamber 12a.

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. Further, the plug 14 stops heating after igniting the fuel. Thereafter, 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 introduced into 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.

Figures 3 to 5 show the starting end 1 in this invention.
Fig. 3 shows another embodiment of the fuel cell 5b, in which the steel wire 15a of the starting end 15b is made into an arc shape, and the entire starting end 15b is expanded into a fan shape to improve fuel supply. In FIG. 4, the tip of the steel wire 15a at the starting end 15b in FIG. 3 is directed upward to improve fuel supply. In FIG. 5, the steel wire 15a at the starting end 15b is made straight and the starting end 15b is expanded into a fan shape to improve fuel supply.

Moreover, although steel wires were used as the fire-resistant wires in the above-described embodiments, the intended purpose can also be achieved by using heat-resistant and fire-resistant fiber wires as the fire-resistant wires.

(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 the fuel guide, which is formed by providing a fuel guiding gap therebetween, is made to protrude into the fuel receiving chamber, and the refractory wire at the starting end is pushed outward toward the tip and attached to the support. By installing the fuel guide and arranging the fuel guide near the plug, the fuel flows well in the fuel guide, so that the fuel reaches the tip of the refractory wire and the amount of fuel heated by the plug is reduced. This increase improves vaporization performance, which also improves ignitability. In addition, as more fuel flows inside the fuel guide, less fuel flows on the surface of the fuel guide, so there is no leakage of fuel from the combustor body to the outside, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a combustion type heater for an automobile showing an embodiment of this invention, Fig. 2 is a perspective view showing the structure of a fuel induction body, and Figs. 3 to 5 show the shape of the starting end of this invention. The front view shown in FIG. 6 is a sectional view of a conventional combustion type heater for an automobile. 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, 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 guide members 5a, protrudes into the fuel receiving chamber 17b, and the starting end 1
A combustion type heater for an automobile, characterized in that the refractory wire 15a of 5b is pushed outward toward the tip and attached to the supporter 17, and the fuel derivative 15 is disposed along the vicinity of the plug 14. .