JPS5937535Y2 - oil vaporizer - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an oil vaporization device, and more particularly to an oil vaporization device that vaporizes oil by inserting an electric heater into a vaporization chamber.

Generally, oil vaporization equipment vaporizes liquid petroleum through the heat exchange action of an electric heater installed in the vaporization chamber.
The vaporized oil is ejected toward the burner from the ejection part of the nozzle that communicates with the vaporization chamber.

In conventional oil vaporizers, the heat exchange efficiency of the electric heater is improved by wrapping a wire mesh or the like around the outer circumferential surface of the electric heater inserted with a gap in the vaporization chamber.

However, in such conventional oil vaporization equipment, if the wire mesh has a large wire diameter, it is difficult to wrap it around the electric heater, and if the wire mesh has a small wire diameter, carbide may adhere to the wire mesh and cause clogging. This tends to cause the pressure loss in the vaporization chamber to increase and the heat exchange efficiency to decrease.

In addition, even when the operation of the oil vaporization equipment is stopped, a large amount of oil remains in the wire mesh due to capillary action, and this residual oil is gradually vaporized over a long period of time due to the residual heat in the vaporization chamber, resulting in vaporized oil. There is a problem that there is a risk that the liquid may continue to spout from the nozzle.

This invention was devised in view of the above-mentioned conventional problems, and the object is to provide an oil vaporization device that has a simple structure and can improve heat exchange characteristics.

This idea is based on an oil vaporization system that vaporizes oil by inserting an electric heater into the vaporization chamber, in which a corrugated metal plate that forms a number of heat exchange paths in the vaporization chamber contacts the inside of the vaporization chamber and the outside of the electric heater. It is arranged in the vaporization chamber in the same condition.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 shows a petroleum vaporizer 10 according to this invention connected,
FIG. 2 is an explanatory diagram showing the burner 1 in a combustion state, and FIG. 2 is an explanatory diagram showing the internal structure of the oil vaporization apparatus of FIG. 1.

The vaporization chamber 11 of the oil vaporization device 10 includes a long cylindrical lower member 13 with a bottom plate 12 and a short cylindrical upper member 14, which are integrally connected via a substantially ring-shaped control ring 15 without vertical gaps. It is formed by

A rectification chamber 17 is formed on the bottom side of the lower member 12, a fuel filler joint 17 for introducing liquid petroleum is connected to the rectification chamber 16, and a fuel filler joint 17 for introducing liquid petroleum is connected inside the vaporization chamber 11 for heating and vaporizing liquid petroleum. A cylindrical electric heater 18 is inserted and arranged through a slight gap.

A holding hole 19 into which the upper middle part of the electric heater 18 is inserted and held is formed in the center of the control ring 15, and around the holding hole 19 there are a plurality of communication holes that vertically penetrate inside the vaporization chamber 11. A portion 20 is formed.

The corrugated metal plate 21 shown in FIG. 3 is located in almost the entire vertical area of the vaporization chamber 110, excluding the control ring 15 arrangement position and the rectification chamber 16, and is connected to the inner surface of the lower member 13 shown in FIG. They are inserted between the outer surface of the heater 18 and between the inner surface of the upper member 14 and the outer surface of the electric heater 18 shown in FIG.

The corrugated metal plate 21 is provided with a large number of V-grooves 22 extending straight in the longitudinal direction on its inner circumferential surface side and outer circumferential surface side, and the ridge line on the inner circumferential surface side is in close contact with the outer surface of the electric heater 18, and the outer circumferential surface The side ridgelines are in close contact with the inner surface of the lower member 13 or the upper member 14.

That is, the corrugated metal plate 21 is thermally integrated with the electric heater 18 in the vaporization chamber 11, forming a large number of heat exchange paths 23 between its inner peripheral surface and the electric heater 18, and forming a large number of heat exchange paths 23 between its inner peripheral surface and the electric heater 18. Lower member 13 or upper member 14
A large number of heat exchange paths 23B are formed between the inner surface of

Further, a temperature detector mounting portion is provided outside the vaporization chamber 11 of the control ring 15, and a temperature detector 24 is embedded from the outer surface.

At the start of operation of the oil vaporizer, the temperature detector 24 detects that the atmospheric temperature in the vaporization chamber 11 has risen to a temperature sufficient to completely vaporize the oil due to the preheating operation of the electric heater 18, and then connects the oil filler joint 17. During steady operation, oil is brought into contact with a control ring 15 to detect the temperature of the circulating oil, which is then returned to the electric heater 18 to control the temperature of the vaporized oil in a preset state.

A cover 25 is attached to the upper end side of the vaporization chamber 11.
The petroleum gas vaporized in the control ring 1 is led through a flow passage 26 to an outlet 27 formed in an outwardly projecting portion of the control ring 15 .

A nozzle mounting section 28 is provided at the open end of the outlet section 27, and one end side of a mixing pipe 29 connected to the burner 1 is fixed to the outer circumference of the tip of the nozzle mounting section 28.

The base end of a nozzle 300 is screwed into the tip of the nozzle mounting part 28, and the cylindrical body of the nozzle 300 projects into the mixing pipe 29, so that vaporized petroleum is ejected into the mixing pipe 29. There is.

Next, the operation of the above embodiment will be explained.

With the start-up of the oil vaporization device 10, the electric heater 18 starts the heat exchange path 23A formed in the vaporization chamber 11 as described above within the preheating operation time of approximately 3 minutes from the start of operation.
, 23B is preheated to a temperature at which oil can be completely vaporized.

When the temperature detector 24 disposed on the control ring 15 forming the middle part of the vaporization chamber 11 and closely holding the electric heater 18 reaches approximately 270°C, the electric heater 18 performs the preheating operation. When this is completed, liquid petroleum is introduced into the vaporization chamber 11 through the oil filler joint 17, which is heated.

The petroleum introduced into the rectification chamber 16 of the vaporization chamber 11 enters heat exchange paths 23A and 23B formed by the corrugated metal plate 21 between the lower member 13 and the electric heater 18, and passes through the electric heater 18 and the corrugated metal plate 21. The upper member 14 and the electric heater 1
8 and a heat exchange path 23A formed by a corrugated metal plate 21.

23B, electric heater 18 and corrugated metal plate 210
It contacts the surface uniformly and undergoes heat exchange and is completely vaporized.

The vaporized oil passes through the flow path 26 from the upper part of the vaporization chamber 11, reaches the outlet section 27 formed in the control ring 15, and is further ejected from the nozzle 30, and flows into the mixing pipe 29.
It is constantly combusted by a burner 1 connected to the .

During this steady operation of the oil vaporizer 10, the temperature detector 2
4 detects the temperature of the vaporized oil via the control ring 15, controls the electric heater 18, and manages the vaporized oil in a set state.

According to the above embodiment, the corrugated metal plate 21 provided with the V-groove portion 22 having an appropriate depth is tightly inserted over the entire circumference between the inner surface of the lower member 13 or the upper member 14 and the outer surface of the electric heater 18. By doing so, a large number of heat exchange passages 23A, 23B can be reliably and easily formed in the vaporization chamber 11.

Further, each heat exchange path 23A, 23B is formed between the inner surface of the lower member 13 or the upper member 14 and the outer surface of the corrugated metal plate 21, and between the outer surface of the electric heater 18 and the inner surface of the corrugated metal plate 21. 21 is in close contact with the electric heater 18 and is thermally integrated to form an electric heating surface, and the petroleum oil flows in uniform electrothermal contact, improving heat exchange efficiency.

In addition, carbide is difficult to adhere to the surface of the corrugated metal plate 21, so that an increase in pressure loss over time in the vaporization chamber 11 and a decrease in heat exchange efficiency are suppressed.

Furthermore, when the oil vaporization device 10 stops combustion, no liquid oil remains on the surface of the corrugated metal plate 21.
There is no danger of vaporized oil leaking out even after combustion has stopped.

In the above embodiment, the case where the corrugated metal plate 21 having the V-groove portion 22 that is straight with respect to the longitudinal direction of the vaporization chamber 11 is employed is explained. V-groove portion 31 slightly inclined with respect to the direction
You may make it employ|adopt the corrugated metal plate 32 provided with.

According to such a corrugated metal plate 32, the contact area with the corrugated metal plate 32 forming a heat transfer surface for oil rising in the vaporization chamber 11 is slightly increased, and heat exchange efficiency is further improved. It turns out.

As described above, the oil vaporizer according to this invention has a corrugated metal plate that forms a large number of heat exchange paths inside the vaporization chamber and is arranged in the vaporization chamber in contact with the inside of the vaporization chamber and the outside of the electric heater. This has the effect of improving heat exchange characteristics with a simple structure.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view showing an oil combustion device to which the oil vaporizer according to this invention is applied, and FIG. 2 is a sectional view showing an embodiment of the oil vaporizer according to this invention.
Figure 3 is a perspective view showing the corrugated metal plate, Figure 4 is I of Figure 2.
5 is a sectional view taken along the line V--IV in FIG. 2, and FIG. 6 is a perspective view showing a modification of the corrugated metal plate. 11... Vaporization chamber, 18... Electric heater, 21° 32... Corrugated metal plate, 23A, 23
B...Heat exchange path.

Claims (1)

[Scope of utility model registration request] In an oil vaporization system that vaporizes oil by inserting an electric heater into the vaporization chamber, a corrugated metal plate forming a large number of heat exchange paths inside the vaporization chamber is in contact with the inside of the vaporization chamber and the outside of the electric heater. An oil vaporization device characterized in that it is arranged in.