JP3038267U - Boiler equipment using waste oil - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To develop a boiler device that utilizes waste oil, is completely combusted, and can be rapidly re-ignited. SOLUTION: The boiler device of the present invention includes an oil feeding circuit 10 between a waste oil tank 12 storing waste oil and a combustion nozzle 16.
And a preheating chamber 14 provided with a heater 14a is provided in the oil feeding circuit 10 with an oil feeding pump 13 interposed therebetween, and a first valve 15 is provided between the preheating chamber 14 and the combustion nozzle 16. Intervene. The second valve 2 is provided between the oil supply pump 13 and between the preheating chamber 14 and the first valve 15 of the oil supply circuit 10.
A circulation circuit 20 having the interposition 3 is formed. A heater 17 is provided in the combustion nozzle to form a combustion chamber 30, and a hot water storage tank 40 having a temperature sensor 43 is provided thereon.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a boiler device using waste oil as fuel.

[0002]

[Prior art]

 Waste oil such as used automobile oil, household cooking oil, and used cutting oil has not been used until now, and it is currently immersed in the soil and discarded. There is a fear that it will cause environmental problems such as polluting the soil and polluting groundwater after infiltration.

On the other hand, kerosene, A heavy oil, B heavy oil, etc. are used as the fuel of the conventional oil-fired boiler, but since virgin oil is used, its viscosity is constant and ignition and combustion can be performed smoothly. When the above is replaced with the above waste oil, for example, in the case of automobile oil, the engine oil, brake oil, hydraulic oil, etc. are mixed, resulting in uneven viscosity, making it difficult to completely burn and to cause black smoke. It causes complete combustion.

On the other hand, as a US patent, there is a waste oil preheating device (Japanese Patent No. 5080579), the outline of which is a second preheating device installed near the burner nozzle and a place distant from the burner. It is divided into two, the first preheater installed, the first preheater is mainly used to preheat waste oil when the burner is operating, and the second preheater remains mainly near the burner. It is used to keep the waste oil at a suitable temperature when the burner is not operating, and the waste oil from the first preheating device to the burner nozzle is shut off when the burner is not operating.

[0005]

[Problems to be solved by the device]

 However, in this preheating device, it is intended for general heating devices and not for direct boiler devices, so if the combustion ends once and the heating of the first preheating device is stopped, the At the time of ignition, it takes a waiting time to raise the temperature of the first preheating device again, and as a result, if the faucet plug of the boiler is opened during the waiting time, cold water below the specified temperature will flow out, It impaired its function as a boiler. Therefore, the present invention has been devised by improving the above mechanism so that waste oil is used as fuel for a boiler device, and warm water is always supplied regardless of when the boiler is used.

[0006]

[Means for Solving the Problems]

 The boiler device of the present invention forms an oil feeding circuit between a waste oil tank that stores waste oil and a combustion nozzle, installs an oil feeding pump on the waste oil tank side of the oil feeding circuit, and heats a heater on the combustion nozzle side. And a first valve is provided between the preheating chamber and the combustion nozzle, and a branch passage serving as an inlet portion is provided between the preheating chamber and the first valve. A circulation circuit is formed by connecting a second valve for circuit closure to the oil feed pump, and a return pipe is extended between the oil feed pump and the waste oil tank to heat the combustion nozzle with a heater. Is provided, a combustion chamber is formed at the tip of the combustion nozzle, and a hot water storage tank having a temperature sensor is provided thereon.

When the oil sent from the waste oil tank by the oil sending pump rises in temperature in the preheating chamber and is sprayed by the combustion nozzle, it is preheated to a temperature suitable for combustion and granulation, and cooled in the middle. In addition, even if the heater of the combustion nozzle warms the fuel to complete combustion, and even after the combustion is stopped, the oil that has expanded due to the closing of the first valve does not leak. Furthermore, even when re-burning, the oil feed pump is activated by the circulation circuit and the heating heater in the preheating chamber is activated to preheat the oil to an appropriate temperature, so ignition can be performed without waiting time.

[0008]

[Embodiment of the invention]

 The boiler device of the present invention includes an oil feeding circuit unit 10, a circulation circuit unit 20, a combustion chamber 30, and a hot water storage tank 40.

The oil supply circuit section 10 is formed by arranging an oil supply pipe 11 between a waste oil tank 12 and a combustion nozzle 16. The waste oil tank 12 stores discarded oil. It refers to oil, household cooking oil, used cutting oil, etc., but is not limited to this, and includes other liquid waste oils.

Then, an oil feed pump 13 is arranged on the waste oil tank side in the middle of the oil feed circuit 10. It is desirable that the oil feeding pump 13 has a function of adjusting the flow rate, such as an annular speed change type. This is because the pressure regulation method requires a large number of accessories to stabilize the pressure, but the flow regulation type can supply a fixed amount regardless of the pressure.

Next, in the middle of the oil feeding circuit 10, a preheating chamber 14 is arranged ahead of the oil feeding pump 13, and the preheating chamber 14 is for warming the waste oil fed to the tip of the combustion nozzle 16. is there. In other words, waste oil contains various types of oil and those whose viscosity has increased due to deterioration over time, and even if this waste oil is sent to the combustion nozzle as it is, the spray state is unstable and black smoke is generated. This is to eliminate this as it will be completely burned. Therefore, a heating heater 14a is built in the preheating chamber 14, and the heating heater 14a is set to maintain a temperature suitable for granulation and combustion, for example, a temperature of 35 ° C to 45 ° C, and heating is performed according to the temperature. The heater 14a is turned on and off to interlock the pump 13 and the like.

A first valve 15 is provided between the preheating chamber 14 and the combustion nozzle 16 to prevent oil from leaking from the combustion nozzle. The first valve 15 includes a starting switch and heating of the preheating chamber. The electromagnetic operation is performed in conjunction with the heater 14a, the temperature sensor 43 of the hot water storage tank 40, and the like. In other words, once the oil is warmed in the preheating chamber 14, the temperature does not suddenly drop even after the combustion is stopped on the way, so the temperature of the oil continues to rise due to the residual heat, and as a result, the volume expansion of the oil causes combustion. Since a phenomenon occurs in which oil leaks from the tip of the stopped combustion nozzle 16, a first valve 15 for closing the passage is provided between the preheating chamber 14 and the combustion nozzle 16. The first valve 15 is electromagnetically operated so as to automatically open and close in association with the ignition device, the heater 14a, the temperature sensor 43 of the hot water storage tank, and the like, and incorporates a microcomputer or a relay circuit.

Next, a branch passage 22 serving as an inlet is provided between the preheating chamber 14 and the first valve 15, a terminal end 24 is connected to the oil feed pump 13, and a second valve 23 for closing the circuit is provided on the way. The circulating circuit 20 provided is formed. That is, if the combustion is stopped in the oil supply circuit 10 alone, the preheating chamber 14 also stops heating at the same time. Therefore, when the combustion is to be started again, the heating of the preheating chamber 14 must be restarted again. Normally, it takes about 6 minutes to wait for the temperature to rise to an appropriate temperature. If you use more than the prescribed amount of hot water during that time, the temperature will be below the prescribed temperature if you open the plug halfway. Cold water comes out. Therefore, even after the combustion is stopped in the combustion nozzle 16 by forming the circulation circuit, the heater 14a of the preheating chamber 14 is operated in the range of 35 to 45 ° C. to operate the circulation pipe 21 and the oil feed pump 13. The oil is circulated between the two to constantly maintain the oil at a temperature compatible with combustion. The second valve 23 is electromagnetically actuated so as to automatically open and close in association with the ignition device, the heater 14a, the temperature sensor 43 of the hot water storage tank, etc., and the microcomputer or relay circuit is incorporated into the first valve 15. It is the same.

When the volume of oil expands due to residual heat after the combustion is stopped, it circulates in the circulation circuit 20 and when it exceeds the capacity of the oil feed pump 13, the excess amount is returned by the return pipe 18. Are removed to prevent leakage from the nozzle.

Further, the combustion nozzle 16 is arranged so as to face the combustion chamber 30 at the tip of the first valve 15. The combustion nozzle 16 is provided with a pipe body 16a for aeration near the tip of the combustion nozzle 16. The pipe is made to face, air is sent to the pipe, and oil is sprayed. A heating heater 17 is entangled with the combustion nozzle 16 so that the combustion nozzle can be heated. This is suitable for combustion and atomization when the temperature of the oil sent from the preheating chamber drops during the oil transfer. This is because the temperature is restored to normal.

A hot water storage tank 40 that receives the heat of combustion to generate hot water is arranged above the combustion chamber, and the tank 40 has a water inlet 41 and a water outlet 42 that send hot water from above. Then, a temperature sensor 43 that senses the temperature inside the tank is exposed to a part of the temperature sensor 43.

The temperature sensor 43 of the hot water storage tank and the heater 14 a of the preheating chamber 14 are electrically connected to the oil feed pump 13, the first valve 15, and the second valve 23 by a microcomputer or a relay circuit.

Next, the operation of this embodiment will be described. First, when the start button is turned on when starting the apparatus, the heater 14a of the preheating chamber 14 is started to heat the oil that has entered the preheating chamber 14 from the oil feed pump 12 and heat the oil temperature to about 45 ° C. To do. At this time, the first valve 15 is closed and oil is not sent to the combustion nozzle 16 while the oil has not yet reached the predetermined temperature of 45 ° C., the second valve 23 is opened, and the oil is returned to the oil feed pump 13 to circulate the circuit. The oil in the preheating chamber 14 is efficiently heated by circulating the oil inside the preheat chamber 20 by the mixing effect.

Next, when the oil in the preheating chamber 14 reaches 45 ° C., the second valve 23 is closed, the first valve 15 is opened, and a fixed amount of the oil in the preheating chamber 14 is removed by the oil feed pump 13. Send to the combustion nozzle 16. As a result, different oils and oils whose viscosity has increased due to deterioration over time are also accurately granulated to form a perfect mist and have a temperature suitable for combustion. At this time, when the temperature of the oil has dropped, the heating heater 17 attached around the combustion nozzle 16 is operated to keep the temperature of the oil at an appropriate temperature.

When the oil from the combustion nozzle 16 is injected in the combustion chamber 30, an ignition device (not shown) works to burn the fuel, and the above conditions completely burn the fuel without raising black smoke. The hot water storage tank 40 is heated to raise the temperature of the water in the tank. When the temperature reaches a predetermined temperature, the temperature sensor 43 in the hot water storage tank senses it, and when it is notified to the first valve 15 and closed, combustion stops, and the oil thermally expands in the oil transfer pipe 11 during this time. Even if it does not leak from the tip of the combustion nozzle 16, it is blocked by the first valve 15.

When the combustion is stopped, the heater 14a of the preheating chamber 14 does not stop, the second valve 23 is opened, and the operation of the oil feed pump 13 is continued. Maintaining a temperature of ~ 45 ° C, it can instantly start combustion, and the hot water supply from the hot water storage tank is not cut off. Therefore, when it is necessary to supply hot water from the hot water storage tank again by stopping the function of the heater, the waiting time for raising the temperature of the preheating chamber again is not required. The preheating chamber 14 operates in a temperature range of 35 ° C to 45 ° C, and automatically stops heating at 45 ° C or higher to prevent wasteful power consumption.

[0022]

[Effect of the invention]

 The proposed boiler system based on the above configuration and operation opened the way to use waste oil as fuel for the boiler system, so that the waste oil that was conventionally discarded can be properly used, and it is economical and environmental pollution is not a problem. Resolve. Further, since the waste oil is warmed to an appropriate temperature and is granulated in the combustion nozzle part, the waste oil can be completely burned, and the circulation circuit can reburn it in a short time without waiting time when reburning. It has an excellent function as a boiler that can always supply hot water from the hot water storage tank.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing the entire device of the present invention.

FIG. 2 is a schematic front view showing the main part of the apparatus.

[Explanation of symbols]

 10 oil supply circuit 11 oil supply pipe 12 waste oil tank 13 oil supply pump 14 preheating chamber 14a heating heater 15 first valve 16 combustion nozzle 17 heating heater 18 return pipe 20 circulation circuit 21 circulation pipe 22 branch port 23 second valve 24 terminal 30 Combustion chamber 40 Hot water storage tank 43 Temperature sensor

Claims (2)

[Utility model registration claims] 1. An oil feeding circuit is formed between a waste oil tank storing waste oil and a combustion nozzle, an oil feeding pump is provided on the waste oil tank side of the oil feeding circuit, and a heating heater is provided on the combustion nozzle side. A preheating chamber is provided, a first valve is provided between the preheating chamber and the combustion nozzle, a branch passage serving as an inlet is provided between the preheating chamber and the first valve, and the end is fed with oil. The second for connecting to the pump and closing the circuit on the way
A circulation circuit having a valve is formed, a return pipe is extended between the oil feed pump and the waste oil tank, a heater is provided at the combustion nozzle, and a combustion chamber is provided at the tip of the combustion nozzle. A boiler device, characterized in that a hot water storage tank is provided on which a temperature sensor is provided. 2. The boiler device according to claim 1, wherein the oil feed pump has a flow rate adjusting function.