JPH0325012Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an oil combustor equipped with an explosion-proof mechanism.

(Prior Art) As a conventional example of an oil burner, there is one shown in FIG. 4, which is applied to an oil heater, for example. First, to describe this conventional example, 1 is a stand on which the combustion tube 2 is erected, 3 is a pot provided at the bottom of the combustion tube 2, and on the inner wall of this pot 3 are a plurality of combustion rings 4.
is installed protrudingly. Further, a large number of ventilation holes are provided in the peripheral wall of the pot 3. Reference numeral 5 denotes an ignition heater installed at the bottom of the pot 3, which ignites the vaporized petroleum fuel by supplying current from the ignition device. Reference numeral 6 denotes an oil supply pipe, one end of which faces near the ignition heater 5 inside the pot 3. Reference numeral 7 denotes an intake passage recessed in the frame 1, through which air, which is forced from a blower fan as required, is sent into the pot 3 and the combustion cylinder 2 to burn the vaporized oil.

Further, a control box 8 is provided adjacent to the combustion tube 2, and within this control box 8 is provided an oil amount adjusting device 9 for controlling supply and cutoff of oil to the oil supply pipe 6. 10 is an oil amount adjustment device 9
This is a manually operated fuel adjustment knob.

Reference numeral 13 denotes a chimney with an opening connected to the peripheral wall of the upper part of the combustion tube 2, and a baffle plate 14 for guiding the flame upward is attached to the entrance of the opening. Furthermore, a lid 15 that semi-seals the combustion tube 2 is removably fitted into the upper end opening of the combustion tube 2, and a kettle or a pan 16 can be placed on the lid 15 if necessary. It's getting old.

In such a conventional oil combustor, oil from the tank is supplied to the oil supply pipe 6 through the oil amount adjusting device 9 whose opening degree is appropriately adjusted, and this oil is appropriately gasified in the pot 3. Ignition heater 5
is ignited. Therefore, the gasified petroleum oil combines with the oxygen in the air fed as described above, and burns in the form of a large flame. Therefore, the flame heats the combustion tube 2 and the lid 15,
Increase atmospheric temperature. Note that the water in the pot 16 can also be boiled. In addition, harmful exhaust gas and untwisted gas are disposed of outside through the chimney 13 along with smoke. .

(Problems to be solved by the invention) The conventional oil combustor has a structure in which the combustion tube 2 is semi-sealed by the lid 15.
If the chimney 13 is long or has a relatively small diameter, the combustion pressure in the combustion tube 2 may suddenly rise abnormally for some reason (for example, due to deflagration).
The abnormal pressure could cause the lid 15 to come off the combustion tube 2 and fly out, or the boiling water in the cooking pot 16 to scatter, creating an extremely dangerous situation.

(Purpose of the invention) The present invention was made by focusing on the above-mentioned conventional problems, and the abnormal pressure generated in the combustion cylinder is automatically released by a safety valve installed in the lid body. To obtain an oil combustor capable of effectively preventing a lid from accidentally popping out.

(Means for solving the problem) In order to achieve the above object, the present invention
In an oil combustor in which oil supplied into a pot 3 is ignited by an ignition heater 5 and burned in a semi-closed combustion tube 2a, the combustion tube 2 is
An oil combustor is proposed in which a recess is formed in the center of a removable lid 15a that closes the upper end of a, and a safety valve 23 that is opened when the internal pressure of the combustion cylinder 2a exceeds a set pressure is provided in the recess. do.

(Function) This invention allows even if the pressure inside the combustion cylinder exceeds the set pressure,
Since the pressure automatically escapes from the safety valve before it acts directly on the lid, it is possible to prevent the lid from coming off the combustion tube and flying out. Furthermore, since the safety valve is provided in a recess formed in the lid, it operates normally even when a kettle or the like is placed on the lid. In other words, it functions as an explosion-proof combustor.

(Example) FIG. 1 is a sectional view of the main part showing the upper structure of the oil combustor of the present invention, and 2a is a combustion tube. A lid 15a that semi-closes the combustion tube 2a is removably fitted into the upper end opening of the combustion tube 2a. As shown in FIG. 2, a recess 21 is formed in the center of the lid 15a, and an opening ridge 22 is provided within the recess 21. As shown in FIG. Further, a closing plate 24 constituting the safety valve 23 is placed over the opening protrusion 22 so as to slide along the outer surface of the opening protrusion 22 . As shown in FIG. 3, a retaining rod 26 that extends horizontally through a support rod 25 is protruded from the lower central surface of the closing plate 24.
6 is longer than the inner diameter of the opening protrusion 22, and is configured to pass through the opening and not be pulled out upward.
Reference numeral 27 denotes three supporting protrusions protruding from the upper surface of the lid 15a, which are arranged radially at equal intervals around the recess 21 and stably support the bottom surface of the kettle or pan 16.

Next, the operation will be explained.

If oil is being normally burned in the combustion tube 2a, the combustion pressure in the combustion tube 2a is stable, so the safety valve 23 is closed by the blocking plate 24 due to its own gravity. The opening protrusion 22 is maintained in a closed state. However, if the air supply amount and oil supply amount in the combustion tube 2a increase abnormally, resulting in abnormal combustion, and this occurs at the same time as a chimney clogging accident, the pressure in the combustion tube 2a may increase to an abnormal level. may rise rapidly.
In such a case, the abnormal pressure may cause the safety valve 2 to close.
The closing plate 24 is pushed up against the gravity of 3, and the closing plate 24 floats from the opening protrusion 22, and the abnormal pressure escapes from these gaps. Therefore, the abnormal pressure is directly applied to the lid body 15a.
It is possible to prevent an accident in which the air acts on the air and blows it away. In this case, since the pan 16 is placed on the support ridge 27 and the space between them is in communication with the atmosphere, the action of releasing the abnormal pressure cannot be prevented. Further, it is necessary to select the distance between the closing plate 24 and the retaining rod 26 so that the closing plate 24 does not hit the bottom of the pan 16 even when the closing plate 24 is at its maximum height. In addition, in order to ensure that the closing plate 24 returns after the explosion-proof operation described above, a weak return spring may be interposed between the lower surface of the recess 21 and the retaining rod 26.

(Effects of the invention) As explained in detail above, the present invention provides an oil combustor in which oil supplied from an oil supply pipe into a pot is ignited by an ignition heater and burned in a semi-closed combustion cylinder. A recess is formed in the center of the removable lid that closes the upper end of the combustion cylinder, and a safety valve that opens when the internal pressure of the combustion cylinder exceeds the set pressure is installed in the recess. This has the excellent effect of automatically suppressing abnormal pressure rises due to abnormal combustion, and effectively preventing various dangers caused by flying off the lid or damaging the combustion cylinder. In addition, when using this as a heater, even if a kettle, pan, etc. is placed on the lid, the safety valve is located in the recess of the lid, so the function of the safety valve will not be impaired. It can ensure safety and can be put to practical use with peace of mind.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of an embodiment of the oil combustor according to the present invention, Fig. 2 is a perspective view of the lid, Fig. 3 is a perspective view of the safety valve, and Fig. 4 is a conventional oil combustor. FIG. 2 is a cross-sectional view of an oil combustor. In the figure, 2a... combustion tube, 3... pot, 5...
Ignition heater, 6... Oil supply pipe, 15a... Lid body,
23...Safety valve.

Claims (1)

[Scope of Claim for Utility Model Registration] In an oil combustor that ignites oil supplied into a pot from an oil supply pipe using an ignition heater and burns it in a semi-closed combustion cylinder, the upper end of the combustion cylinder is removably closed. An oil combustor characterized in that a recess is formed in the center of the lid body, and a safety valve is provided in the recess that opens when the internal pressure of the combustion cylinder exceeds a set pressure.