JPH0356747Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an air supply device for a combustor such as a fan heater that takes in room air as combustion air.

2. Description of the Related Art Generally, this type of combustor is constructed as shown in FIG. That is, 1 is a carburetor cylinder, 2 is a nozzle for supplying fuel to this carburetor cylinder 1, and is communicated with a tank 4 via a pump 3. 5 is a burner case that covers the outer periphery of the vaporization cylinder 1; 6 is an air supply path that supplies air into the burner case 5 and the vaporization cylinder 1; a fan 7 is connected thereto; Reference numeral 8 denotes an air supply cover attached to cover the motor portion 7a of the fan 7, and is provided with a hole 9 for introducing air necessary for combustion. 10 is the air supply cover 8 so as to cover this hole 9.
This is the filter body attached to. Reference numeral 11 denotes a burner head that covers the upper part of the vaporizing cylinder 1 and has a large number of flame holes 12.

In the combustor configured in this manner, air sucked by the fan 7 through the filter body 10 is supplied into the vaporization cylinder 1 via the air supply path 6, where it is supplied from the nozzle 2 and vaporized. It mixes with the vaporized gas to become a premixed gas, which is ejected from the flame hole 12 and burned.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, since the motor part 7a of the fan 7 is located inside the air supply cover 8, when the filter body 10 is removed, the finger cannot be inserted through the hole 9 provided in the air supply cover 8. There was a problem in that there was a risk that the finger might touch the live part of the motor part 7a. Therefore, the present inventor devised a method in which this hole 9 is divided into a plurality of small holes, and a sufficient amount of combustion air can be secured while preventing fingers or the like from entering through the small holes. However, in this case, one of the small holes could be blocked by a finger, which caused new problems such as insufficient combustion air being taken in, resulting in incomplete combustion.

This idea was created in view of these points.
The purpose is to ensure safety while eliminating the risk of incomplete combustion.

Means for Solving the Problems In order to achieve the above object, the present invention has a structure in which a plurality of small holes are provided in the air supply cover and protrusions are provided around the small holes.

Effects The present invention has the above-mentioned configuration, so that even if the finger tries to touch the small hole, the finger will hit the protrusion around the small hole and will not be able to reach the small hole. Therefore, the small hole will not be blocked by a finger, and the finger will not enter through the small hole and touch a live part such as a motor part.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. However, since the configuration of the combustor is the same as the conventional example, the explanation will be omitted, and only the configuration of the air supply part will be explained. , 15 is an air supply cover attached to the fan 17 serving as the end of the air supply path 16, and covers the motor section 17a of the fan 17. This air supply cover 15
is made of synthetic resin, and a plurality of small holes 19 for intake of combustion air are formed inside the cylindrical portion 18 for attaching the filter. The small holes 19 are sized so that a finger cannot fit into them, and the holes are made as many as necessary to take in the required amount of air.
0, and the amount of air necessary for combustion is taken in due to this blockage. Reference numeral 21 denotes a protrusion consisting of a pin (Fig. 1) or a rib (Fig. 3) protruding around the small hole 19, and is a protrusion that protrudes around the small hole 19.
5 is integrally formed. 22 is the above air supply cover 1
The filter body is removably fitted into the cylindrical portion 18 of No. 5, and is attached so as to cover the group of small holes 19.

In the above configuration, when a child or the like uses the filter body 22
Even if you remove it and try to touch the small hole 19 with your finger, your finger will be blocked by the protrusion 21 and will not reach the small hole 19.
The small hole 19 will no longer be blocked by fingers. Furthermore, since the fingers do not reach the small hole 19, there is no possibility that the fingers will enter inside the small hole 19 and touch the live part of the motor section 17a. Of course, since this small hole 19 itself has a diameter smaller than that of a finger, there is no possibility of touching such a live part.

On the other hand, since at least one of the small holes 19 is closed by a blind plate 20, even more air can be taken in by removing the blind plate 20. Therefore, for example, altitude
When the combustor is used in an area with a low oxygen concentration of 1000 m or more, the amount of oxygen necessary for combustion can be secured by removing this blind plate 20. In other words, the small holes 19 can be used to create a combustor that can respond to changes in oxygen concentration. Note that the blind plate 20 cannot be removed using a screwdriver or the like since fingers cannot be inserted into it.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, it is safe because it prevents fingers from entering the inside through the combustion air intake hole provided in the air supply cover. The protrusion provided around the hole can prevent fingers from blocking the hole, and furthermore, even if paper scraps are sucked in, this can also be prevented from blocking the hole. Incomplete combustion due to lack of air can be reliably prevented.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing an air supply system for a combustor in one embodiment of the present invention, Fig. 2 is a sectional view of the same, and Fig. 3 is a partially cutaway perspective view showing another embodiment of the present invention. ,
FIG. 4 is an explanatory diagram showing a general configuration of a combustor. 15...Air supply cover, 16...Air supply path, 19...
...Small hole, 20...Blind plate, 21...Protrusion, 22
...Filter body.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An air supply cover provided at the end of an air supply path, and a removable filter body fitted into the air supply cover, and the air supply cover is connected to the filter body. In an air supply system for a combustor, which has a plurality of small holes for intake of combustion air covered by An air supply device for a combustor that is formed smaller than the size of the small hole and has a plurality of protrusions protruding around the small hole. (2) The air supply installation of the combustor according to claim 1, in which at least one of the small holes is closed by a removable blind plate.