JPS62178810A - Combustion cylinder - Google Patents

Abstract

PURPOSE:To enable uniform radiation of far infrared rays in the horizontal direction around a glass cylinder, by a method wherein far infrared layers are formed at each stage around the glass cylinder raging from a lower stage to the upper part thereof, a ratio of a total area occupied by far infrared layers to the peripheral surface of the glass cylinder at each stage is gradually decreased from a lower part to an upper part. CONSTITUTION:A glass cylinder 13 is equally divided into a lower stage region Ea, a middle stage region Eb, and an upper stage region Ec, and the same number of far infrared layers 20 is formed to each of the regions Ea, Eb, and Ec. Areas of the far infrared layers 20 at the regions Ea, Eb, and Ec are Sa, Sb, and Sc, respectively, and a relation between the areas is set to Sa>Sb>Sc. In this constitution, by offsetting between the temperature difference of the glass cylinder and a difference between the total area of the far infrared layers and that of the peripheral surfaces at each of the regions Ea, Eb, and Ec, a radiation amount of far infrared rays from each of the far infrared layers 20 is about uniformized. Thereby, the portion above the waist of a person, seating in front of a combustion cylinder 3 for warming himself thereby, is uniformly warmed to provide an ideal state in that the person warms himself thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a combustion tube used in combustion devices such as kerosene stoves and gas stoves.

[Technical background of the invention and its problems]

For example, a combustion device for a kerosene stove sucks up kerosene with a wick, vaporizes it from its upper end, and burns the vaporized gas through a combustion tube.

The combustion tube includes an inner flame tube and an outer flame tube arranged concentrically overlapping each other, and the outer periphery of the outer flame tube is covered with a glass tube. Then, the upper end of the wick faces the lower end between the inner and outer flame cylinders, and in this state, the upper end of the wick is ignited to start combustion. In response to the start of this combustion, combustion air flows between the inner and outer flame tubes through a number of ventilation holes drilled on their circumferential surfaces, and combustion gradually expands and shifts to steady combustion. and stabilize.

The combustion exhaust gas rises above the combustion tube due to convection and circulates into the room, thereby heating the entire room. Also, as the combustion occurs, the outer flame tube becomes red hot, and this red heat causes the outer flame tube to become red hot. Infrared rays are emitted as radiant heat around the combustion tube through the glass tube, and the person in front of the combustion tube is heated by this infrared rays.

The temperature of the glass cylinder is generally 500℃ at the top and 300℃ at the bottom.
It will be about ℃. The reason why such a temperature gradient occurs is that at the bottom of the glass tube, the inflow of combustion air is intense, and the airflow due to combustion rises actively, so the temperature is relatively low, and as it moves to the top, the airflow decreases. This is because the flow velocity decreases, the inflow of combustion air also decreases, and since the upper end of the glass cylinder is covered with a glass presser, part of the airflow becomes stagnant or flows backwards.

By the way, recently, the wavelength range of infrared rays is 4 to 1000.
Focusing on the fact that μm far infrared rays are well absorbed by the human body and have an excellent heating effect, a far infrared layer is provided on the circumference of the glass tube to radiate far infrared rays around the combustion tube. You can see what happened. However, the conventional
Far-infrared rays are simply scattered evenly around the circumference of the glass tube. The above-mentioned temperature gradient occurs in the glass tube, and therefore, in a configuration in which the far-infrared layer is evenly scattered around the circumference of the glass tube, there is a large disparity in the amount of far-infrared radiation in the horizontal direction around the glass tube. In other words, an imbalance occurs in that the amount of far-infrared rays emitted is large at the top of the glass tube and small at the bottom. When taking heat while sitting in front of a combustion tube, it is important to be able to sufficiently heat the waist area of the person sitting in front of the combustion tube in terms of comfort while taking the heat. In a typical kerosene stove, the lower part of the glass cylinder is configured to face the waist of the person taking the heat. For this reason, in a configuration in which the amount of far-infrared rays radiated is unbalanced as described above, it has been difficult to obtain sufficient comfort in heating.

[Purpose of the invention]

This invention was made with attention to these points, and its purpose is to provide a combustion tube that can evenly radiate far-infrared rays in the horizontal direction around the glass tube. It is about providing.

[Summary of the invention]

That is, the present invention has an inner flame tube and an outer flame tube arranged concentrically overlapping each other, and the outer periphery of the outer flame tube is further covered with a glass tube. A far-infrared layer is applied from the top to the top, and the ratio of the total area of this far-infrared layer to the circumferential surface of each step of the glass tube is gradually decreased from the bottom to the top of the glass tube. This is what I did.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 shows a kerosene stove, and 1 is its main body.A heat radiating part 2 with an open front is formed on this main body 1.A combustion cylinder 3 is provided on this heat radiating part 2, and a combustion cylinder 3 is provided on the front of this main body 1. An ignition knob 4, a fire power adjustment knob 5, and a fire extinguishing knob 6 are provided.

The combustion tube 3 is supported as shown in FIG.
An annular fire pan 9 is formed at the upper end of these wick guide tubes 7.8, a wick 10 faces this fire pan 9, and a combustion tube 3
is placed in a removable manner. The combustion tube 3 is an inner flame tube 11.
and an outer flame tube 12 are arranged concentrically overlapping each other, and a heat-resistant glass tube 13 is further arranged concentrically around the outer periphery of the outer flame tube 12 to cover the outer flame tube 12. The glass tube 13 is supported by an outer tube 14 provided on the outer periphery of the lower part of the outer flame tube 12, and its upper end is locked with a glass presser 15. In addition, inner flame tube 1
1 and the outer flame cylinder 12 have a large number of ventilation holes 1 on their circumferential surfaces, respectively.
6..., 17... are bored, and a diffusion plate 18 is attached to the upper end surface of the inner flame cylinder 11. The inner flame tube 11, the outer flame tube 12, and the outer tube 14 are integrally connected via a cross bin (not shown) passing through them.

However, when the upper end of the wick 10 is lit and ignited,
Fuel (kerosene) is sequentially vaporized from the upper end of the lamp wick 10, and the vaporized gas first starts combustion in the lower part of the combustion tube 3, and then passes through the ventilation holes 16..., 17... to both the inner and outer flame tubes 11. Combustion air flows in between 12 and the amount of vaporization increases and the combustion area expands to the upper side of the combustion tube 3, transitioning to steady combustion, the outer flame tube 12 becomes red hot, and the glass tube 13 is heated. be done.

Here, on each stage of the outer peripheral surface of the glass cylinder 13, a large number of far-infrared ray layers 20, each having a round shape, are provided in a scattered manner. These far-infrared layers 20... can be formed by applying a ceramic solution to the outer circumferential surface of the glass cylinder 13, for example.
It is baked by heating at a temperature of about 0 to 600 degrees Celsius. As the temperature of the glass tube 13 increases, each far-infrared layer 20 and
Far-infrared rays are radiated in the horizontal direction around the glass tube 13 through...

By the way, as is well known, when a radiator transmits thermal energy by electromagnetic waves, the amount is determined by the following relational expression: Me = σxT'' (Kca I/m2h) Me: thermal energy σ: Steph7 Boltzmann's constant T: radiator temperature It is proportional to the fourth power of the humidity of the heat sink.

Here, the radiator in the above relational expression can be the far-infrared layer 20, and the temperature of the radiator can be the temperature of the glass tube 13, but as described above, the temperature of the glass tube 13 changes as it moves from the bottom to the top. Therefore, if a far-infrared layer of the same area is applied to each part of the outer peripheral surface of the glass tube 13, the amount of far-infrared rays radiated is small on the lower side of the glass tube 13, and the amount of far-infrared rays radiated on the upper side is small. This creates an imbalance.

Therefore, in the present invention, the ratio of the total area of the far-infrared layers 20 to the circumferential surface of each stage of the glass tube 13 is gradually decreased from the bottom to the top of the glass tube 13. . In this embodiment, the glass tube 13 is evenly divided into a lower region Ea, a middle region Eb, and an upper region EC, and the same number of far-infrared layers 20 are provided in each region Ea, Eb, and Ec.・and each area Ea, Eb.

For each Ec, the area of k far infrared layer 20... is 3
a, 3b, 3c, and the area relationship is Sa > 3
b > SC and shitial.

According to such a configuration, the temperature difference between the glass cylinders 13 and
The amount of far-infrared rays emitted from each far-infrared layer 20 is offset by the difference in the total area of the far-infrared layer 20 relative to the circumferential surface of each region Ea, Eb, EC of the glass tube 13. This makes it possible to uniformly humidify the area above the waist of the person sitting in front of the combustion tube 3, thereby providing ideal warming conditions.

In the above example, the area of the far-infrared A-layer eye body in each stage of the glass tube was changed for each stage, but the area of the far-infrared layer in each stage was all the same, and the By changing the arrangement density from dense to sparse from the bottom to the top of the glass tube, the ratio of the total area of the far-infrared layer to the circumferential surface of each step of the glass tube increases from the bottom to the top of the glass tube. It is also possible to construct the structure so that it becomes smaller sequentially over the period. In this case, when the total area of the far-infrared layer at the top of the Su mini-glass glass, the total area of the far-infrared layer at the bottom of the Sa mini-glass, Tu, the temperature at the top of the Ni-glass tube, T2 the temperature at the bottom of the Ni-glass tube, 5u=SQxl/ It is preferable that the density is successively varied with a uniform gradient from the bottom to the top of the glass cylinder so that the relationship is (Tu/Tn)'.

Furthermore, this invention is not limited to application to the combustion tube of a combustion device that uses petroleum (kerosene) as fuel, but can similarly be applied to a combustion tube of a combustion device that uses gas as fuel. .

〔Effect of the invention〕

As explained above, according to the present invention, far infrared rays can be uniformly radiated in the horizontal direction around the glass tube, so when the combustion tube of the present invention is used in an oil stove or a gas stove. This has the effect of providing a comfortable temperature measurement state to the person taking the heat.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a kerosene stove, and FIG. 2 is a sectional view of the main parts. 3... Combustion tube, 11... Inner flame tube, 12... Outer flame tube, 13... Glass tube, 20... Far infrared layer. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2

Claims (1)

[Claims] In a structure in which an inner flame tube and an outer flame tube are concentrically superimposed and arranged, and the outer periphery of the outer flame tube is further covered with a glass tube, there is provided a structure in which each step on the circumferential surface of the glass tube extends from the bottom to the top. A combustion method characterized in that a far-infrared layer is applied to the glass tube, and the ratio of the total area of the far-infrared layer to the circumferential surface of each stage of the glass tube is gradually decreased from the bottom to the top of the glass tube. Tube.