JP3046419B2 - Smoke generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a smoke generator. For example,
It is applied to a flow visualization experimental device and a flow field visualization device for equipment design.

[0002]

2. Description of the Related Art In recent years, so-called general electronic equipment has been reduced in size as a whole, but it has been necessary to remove heat generated inside the electronic equipment. However, natural convection is no longer enough, and a forced air cooling fan has been installed. In the case of natural convection, the heat radiation effect differs significantly depending on the arrangement of the heating elements, and in the case of forced convection, the location of the fan and its capacity greatly differ. Therefore, not only the heat balance is taken into consideration, but also thermal design taking into account the effect of the flow is regarded as important. Since the appearance of the heat flow changes significantly due to the slight boundary conditions, in a three-dimensional housing in which various elements are arranged in a complicated manner, smoke is injected to know the actual state of the movement, so that the fan It is sure to see the effect of such as eyes.

[0003] In experiments for visualizing fluid dynamics, smoke is conventionally used frequently. As a source of smoke, cigarettes, incense sticks and the like are generally used, but they do not continuously generate a large amount of smoke. In addition, there is a device such as a flue tunnel that heats oil to generate a mist and emit smoke, but it is common to combine equipment such as a transformer, As it was not one compact form, it was inconvenient to carry around. In addition, there are smoke generating devices used for shows and the like instead of experimental devices, but these devices cannot be used in experiments because they adversely affect equipment such as adhesion of water droplets.

[0004]

[Purpose] The present invention has been made in view of the above-mentioned circumstances, and can be controlled in a large amount and to a certain extent depending on the purpose of use. The purpose of the present invention is to provide a smoke generating device which can also be used.

[0005]

To achieve the above object, the present invention provides (1)
Smoke comprising an oil reservoir using capillary action, a smoke generating section having liquid heating means provided for atomizing the oil, and an air supply section for sending the atomized oil to the outside In the generator, the heat generated by the liquid heating means in the smoke generating container, having an adjusting means for adjusting the distribution of heating components so as to be balanced with the supply of oil,
Further, (2) in the smoke generating container, when supplying oil from the lower part by utilizing the capillary phenomenon, a heater is used to give a distribution to the amount of heat generated by the liquid heating means, and the lower part of the heater is used. The number of windings is increased to make the number of windings coarser, and (3) the amount of heat generated by the liquid heating means when supplying oil by dropping or flowing down from above in the smoke generating container. A heater is used in order to give a distribution to the heater, and the number of turns at the upper part of the heater is made denser, and the number of turns at the lower part is made coarse. Less than,
A description will be given based on an embodiment of the present invention.

FIG. 1 and FIG. 2 are perspective views for explaining one embodiment of a smoke generating apparatus according to the present invention. FIG. 2 is a block diagram of FIG. 1, wherein 1 is a smoke generating container, 2 is a smoke control, 3
Is an oil reservoir, 4 is a flow control, 5 is an oil control, 6 is a power switch, 7 is an opening, 8 is an oil level adjusting mechanism, 9 is a fluorocarbon tube, 10 is a porous insulating material, 11 is a heater, 12 Is a heater tube, 13 is a mounting plate,
14 is an air supply branch pipe, 15 is a fuse, 16 is a flow pump, and 17 is a supply pipe.

As shown in FIGS. 1 and 2, the smoke generating apparatus of the present invention has a smoke generating container 1 and an oil reservoir 3, and the smoke generating container 1 is formed of a heat-resistant glass branch pipe. A supply pipe 17 is provided at a lower part of the branch pipe, an air supply branch pipe 14 is provided at a lower side part, and a heater branch pipe 12 is provided at an upper side part, and the inside of the heat-resistant glass branch pipe is provided. The porous insulating material 10 is housed such that the lower portion of the porous insulating material 10 is always in contact with the surface of oil, and the porous insulating material 10 is wound with a nichrome wire 11. The oil is dropped into the oil reservoir 3 and the oil level L is changed to the porous insulating material 1.
It has an oil level adjusting mechanism 8 for adjusting the lower part of the oil level to a predetermined level so as to be in contact with the oil level, and is formed of a transparent container so that the oil supply state can be visually checked.
The lower part of the oil reservoir 3 is provided with a supply pipe 17 of the smoke generating container 1.
The flon tube 9 is provided with an oil controller 5. The oil supplied from the lower part of the oil reservoir 3 to the lower part of the smoke generating container 1 through the Freon tube 9 permeates into the porous insulating material 10 by capillary action, and the oil is supplied to the porous insulating material 10. You. Also,
The air supply branch pipe 14 is mounted upward as shown in the figure to prevent the oil in the smoke generating vessel 1 from flowing into the flow pump.

The power switch 6 is for heating the heater 11 and supplying power to the flow pump 16. When the power switch 6 is turned on, the nichrome wire 11 in the smoke generating container 1 is heated. The oil impregnated in the porous insulating material 10, such as glass wool, is heated and turned into a mist. At the same time, the air is supplied from the flow pump 16 through the air supply branch pipe 14, so that the oil is converted into smoke in the form of a mist and sent out through the opening 7 of the smoke generating container 1. The smoke concentration is adjusted by adjusting the oil controller 5 to adjust the amount of oil supplied from the oil reservoir 3 to the smoke generating container 1. Further, the smoke control 2 and the flow control 4 are adjusted while observing the amount of smoke generated and the speed of the visualized smoke flow. When the operation is stopped, the power switch 6 is simply turned off, and at the same time, the generation of smoke is stopped until the supply of air is stopped at the same time as the temperature of the heater is lowered.

The smoke generating apparatus of the present invention has a distribution of heat generated by a heater 11 which is a liquid heating means of the smoke generating container 1. When oil is supplied from a lower portion as shown in FIG. Is gradually increased as the density of heat generated increases. At this time, a porous insulating material 10 such as glass wool, which is heat-resistant and insulative and has an effect of sucking oil upward by capillary action, is used. Is to adjust. Here, a linear heater such as a nichrome wire has been described, but there is no particular need.
A ceramic heater or the like may be used. In short, it is sufficient that the amount of supplied heat is generated in accordance with the supplied oil.

Although the description has been given here based on the oil supply from the lower part, as shown in FIG. 3, it is necessary to provide the smoked liquid 20 and use the liquid amount control cock 21 to drop oil from the upper part. Alternatively, the heat may flow continuously, in which case the amount of heat generated at the upper portion is increased. In addition, the structure of the smoke generating container 1 is not limited to the one shown in the figure, and the figure using glass for the smoke generating container and the oil reservoir is shown. In this case, although there is an advantage that it can be seen, The glass does not need to be glass as long as the power supply for heating the heater is performed normally. If a large amount of smoke is required, two or more smoke generators can be arranged in parallel, but in that case, the oil reservoir 3 is shared. As described above, in the smoke generating container of the present invention, when supplying oil, oil resistance is provided by using a CFC tube, and by using a porous substance when heating oil, the surface area of oil supply is increased. There are advantages such as being able to generate a large amount of smoke, being able to be turned on and off with a single switch, and being able to control the amount of generated smoke, and being as light as 1 kg in total weight.

[0011]

As apparent from the above description, the present invention has the following effects. (1) Effect corresponding to claim 1: By increasing the amount of heat generated in a portion where a large amount of oil is supplied in the process of generating smoke, not only the temperature can be made uniform, but also uniform smoke and glass wool can be obtained. This has the effect of reducing damage to the porous insulating material and the wires of the heater, and consequently providing the durability of the device and eliminating waste of oil. (2) Effect on the second aspect: As in the first aspect, uniform smoke is obtained, and there is an effect that local damage is prevented and durability is improved. As a specific material, cutting of a nichrome wire or the like hardly occurs. (3) Effect on the third aspect: As in the first aspect, uniform smoke is obtained, and there is an effect of improving durability by preventing local damage. Further, since the supply of oil is performed by using gravity, the supply is performed smoothly, so that the temperature uniformization has an effect of preventing waste of oil.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an embodiment of a smoke generating device according to the present invention.

FIG. 2 is a configuration diagram of FIG. 1;

FIG. 3 is a view showing another embodiment of the smoke generator.

[Explanation of symbols]

1 ... smoke generating container, 2 ... smoke control, 3 ... oil storage container,
4 ... Flow control, 5 ... Oil control, 6
... Power switch, 7 ... Opening, 8 ... Oil level adjustment mechanism,
9: Freon tube, 10: Porous insulating material, 11: Heater, 12: Heater tube, 13: Mounting plate, 14: Open air supply branch tube, 15: Fuse, 16: Flow pump, 17 ...
Supply pipe.

Claims (3)

(57) [Claims] An oil reservoir using a capillary phenomenon, a smoke generating section having a liquid heating means provided for atomizing the oil, and an air supply for sending the atomized oil to the outside. A smoke generating apparatus comprising: a smoke generating device comprising: a smoke generating device comprising: a smoke generating device comprising: an adjusting unit that adjusts a distribution of heating components so that heat generated by a liquid heating unit in the smoke generating container is balanced with oil supply. Generator. 2. In the above-mentioned smoke generating container, when supplying oil from a lower portion by utilizing a capillary phenomenon, a heater is used to provide a distribution to the amount of heat generated by the liquid heating means, and the lower portion of the heater is wound. 2. The smoke generator according to claim 1, wherein the number of windings is increased and the number of windings at the top is reduced. 3. When the oil is supplied by dropping or flowing down from the upper part of the smoke generating container, a heater is used to give a distribution to the amount of heat generated by the liquid heating means,
2. The smoke generator according to claim 1, wherein the number of turns at the upper portion of the heater is made high, and the number of turns at the lower portion is made coarse.