JPH0596710U - Oil combustor - Google Patents

Abstract

(57) [Abstract] [Purpose] When the refueling nozzle is looked into the burner and vaporized and burned, tar around the tip of the refueling nozzle was in a jitjit state, which tended to cause tar to adhere, which was a cause of foul odor. This is a device for solving this problem. [Structure] A cylindrical heater 3 is provided on the outer periphery of an oil supply nozzle 2 which is looked into the burner 1, and the cylindrical heater 3 is energized for a short period of time (for example, every few minutes for several hours) during combustion. The tip of the oil supply nozzle 3 is kept dry.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a fuel supply path for a vaporized oil combustor that does not use a wick.

[0002]

[Prior Art]

 An oil combustor that does not use a wick is one in which the refueling nozzle is mainly looked into the vaporization part of the burner and the fuel oil is dropped and supplied for vaporization and combustion.The gasification burner, the rotary burner, and the pot burner are mainly used. I'm known.

The applicant has devised a number of pot type petroleum combustors, including Japanese Utility Model Publication No. 3-7707, in which an oil supply nozzle is attached at an angle to the pot wall, and this oil supply nozzle is directly connected to the vaporization section. An extended product, or a double pipe structure in which the refueling nozzle is extended from the inside of the mounting pipe to the vaporization part, and in the double pipe structure, the mounting pipe is not opened and only the vaporization part side is open. We have put into practical use a device that has air holes in the mounting pipe so that air flows through the gap between the refueling nozzle and the like.

[0004]

[Problems to be solved by the device]

 In the method of supplying the fuel to the vaporizing part of the burner through the fueling nozzle, the vaporizing part of the burner is preheated by an electric heater in advance and the fuel is sent to ignite the vaporized gas generated. After ignition, there are those that continue preheating and those that stop preheating and continue vaporization combustion with combustion heat.

In the inner and outer circumferences near the outlet of the refueling nozzle in the burner, the fuel is in a state of being completely vaporized, and therefore burned for a long time, deteriorated fuel is used, or impure fuel is used. If this happens, tar will easily adhere to the tip of the oil supply nozzle.

Further, if the tip of the fueling nozzle is in a jagged state, the fuel adhering to the tip of the fueling nozzle is decomposed at the time of extinguishing, which causes odor.

[0007] If the fuel is kept in a jagged state at the tip of the refueling nozzle for a long time, the fuel becomes tarred and may cause incomplete combustion or give off a bad odor during combustion, which is a problem to be solved. Has become.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the present invention keeps the tip of the oil supply nozzle in a dry state even during combustion. That is, the cylindrical heater 3 is provided on the outer periphery of the oil supply nozzle 2 which is looked into the burner 1 of the oil combustor, and the small-time cylindrical heater 3 is energized at regular intervals during combustion of the burner 1.

[0009]

[Action]

 The oil combustor heats the fuel sent from the refueling nozzle 2 into vaporized gas, and the vaporized gas burns in the burner 1. The fueling nozzle 2 to which the fuel having a low temperature is fed has a lower temperature in the vaporizing portion of the burner 1 than other parts, and is likely to be in a state of being stagnant by the fuel.

According to the present invention, the cylindrical heater 3 is provided on the outer circumference of the fueling nozzle 2 and electricity and no electricity are repeatedly supplied during burning of the burner 1. Therefore, the fueling nozzle 2 is always in a dry state, and when the fire is extinguished or burning. It was possible to prevent the generation of offensive odors. Further, the tubular heater 3 is not energized all the time, but is energized repeatedly at regular time intervals, so the amount of heat generated is small and the effect on the vaporization part can be almost eliminated.

[0011]

【Example】

 The configuration will be described below with reference to the drawings showing examples. In the overall configuration diagram of the oil combustor shown in FIG. 2, it relates to the peripheral structure of the oil supply nozzle extended to the vaporization section, and 1 is a burner of the oil combustor, It is equipped with a vaporizer such as a pot. Reference numeral 2 is an oil supply nozzle looking from the outside to the inside of the burner 1, 3 is a cylindrical heater provided on the outer periphery of the oil supply nozzle 2, and the cylindrical heater 3 is formed of a ceramic heater to cover the oil supply nozzle 2. It is located so that Reference numeral 4 denotes a mounting pipe for mounting the refueling nozzle 2 on the burner 1. The tubular heater 3 is located inside the mounting pipe 4, and the refueling nozzle 2 is covered with a double pipe shape.

Reference numeral 5 is an electromagnetic pump for supplying fuel to the burner 1 through the oil supply pipe 2, 6 is a preheating / ignition heater provided in the vaporization section in the burner 1, and preheating / ignition heater 6 is for operating a petroleum burner. Energization starts when the switch is turned on. Then, after the vaporized portion of the burner 1 is heated to the required vaporization and ignition of the fuel, the sequence control is performed so that the operation of the electromagnetic pump 5 is started. For this reason, the fuel is jetted from the refueling nozzle 2 into the burner 1 that has become hot, and the jetted fuel is vaporized by the heat of the preheating / ignition heater 6 and ignited.

Reference numeral 7 is a blower for sending air necessary for combustion, 8 is a flame detector provided above the burner 1, and the fuel vaporized and ignited is burned in the burner 1 by the combustion air sent from the blower 7. Combustion is performed, and the flame detector 8 judges from the state of the combustion flame whether there is a normal combustion state, and when combustion is started normally, the circuit of the preheating / ignition heater 6 is turned off. The fuel sent from the plant continues to vaporize and burn due to the heat of combustion.

Reference numeral 9 is an oil pan for storing a fixed amount of fuel sent from a cartridge tank or the like (not shown), and the lower part of the electromagnetic pump 5 is seen through. Reference numeral 10 is an oil supply pipe that connects the electromagnetic pump 5 and the oil supply nozzle 2, 11 is a flame control plate provided in the burner 1, and 12 is a combustion outer cylinder connected above the burner 1.

On the other hand, the cylindrical heater 3 provided on the outer circumference of the fueling nozzle 2 has a structure in which electricity is supplied for a short period of time at regular intervals during normal combustion in which combustion is detected by the flame detector 8. This is to remove the dampness of the fuel at the tip of the rule 2. Specifically, by setting in advance that the power is supplied for about 3 minutes every hour, it was possible to eliminate the jerky condition around the fueling nozzle 2.

When extinguishing a fire, when the operation of the electromagnetic pump 5 is stopped, the fuel injection from the refueling nozzle 2 is stopped to extinguish the fire. Since the surroundings of the refueling nozzle 2 are always in a state of empty color during combustion, the fire is immediately extinguished. No odor is generated.

[0017]

[Effect of the device]

 The present invention has the above-described configuration and operation. Since the cylindrical heater 3 is provided on the outer circumference of the fueling nozzle 2 and the cylindrical heater 3 is energized for a short time at a constant time during combustion, The tip of the fueling nozzle 2 is always kept dry and tar does not adhere.

When the tip of the fuel nozzle 2 is wet, the moist fuel decomposes at the time of extinguishing and causes a bad odor. However, as in the present invention, the tip of the fuel nozzle 2 is dry. If it is in a state, it has the characteristic that no bad odor is generated.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an overall configuration diagram of an oil combustor showing an embodiment of the present invention.

[Explanation of symbols]

 1 burner 2 refueling nozzle 3 tubular heater

Claims (1)

[Scope of utility model registration request] 1. A tubular heater 3 is provided on the outer periphery of an oil supply nozzle 2 which is looked into the burner 1 of an oil combustor, and a small time tubular heater 3 is energized at regular intervals during combustion of the burner 1. Characteristic oil combustor.