JP3869612B2 - Combustion device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a combustion apparatus provided with two pot burners using fuel oil as fuel.
[0002]
[Prior art]
Conventionally, in this type, as disclosed in, for example, Utility Model Registration No. 2563441, the lowest level in which two pot burners are provided and a constant oil level of an oil level regulator is formed in each pot burner. By setting the position lower than the air hole, even if the fuel oil continues to be supplied at the time of non-ignition, it is possible to prevent the fuel oil from overflowing from the air hole.
[0003]
[Problems to be solved by the invention]
By the way, this conventional system has a problem that even if the combustion is stopped, the fuel oil remaining in each oil supply passage continues to burn, the fire extinguishing time becomes long, and the fire does not extinguish forever.
[0004]
[Means for Solving the Problems]
This invention pays attention to this point and solves the above-mentioned drawbacks. In particular, the configuration is such that fuel oil is supplied from two oil level regulators to two pot burners. The first oil supply passage, which has a constant oil level lower than the lowermost air hole of the pot burner and further communicates the first pot burner and the oil level adjuster, has an air chamber and an oil level adjuster in the middle of the first pot burner. A riser pipe branched from a pressurized pipe communicating with the first electromagnetic pump supply pipe for pumping fuel in the oil level regulator to the riser pipe, and further the end of the first oil feed passage Is opened at a position lower than the lowermost air hole of the first pot burner on a certain oil level of the oil level adjuster, and supplies fuel oil with a natural drop to the first pot burner. The burner and the oil level adjuster are the second electromagnetic pump and the second feed provided with the injection nozzle. An oil level controller that communicates with the road and is supplied with fuel oil by a second electromagnetic pump, and sucks residual oil in the first oil supply path when combustion is stopped. A first suction pump that returns the oil to a position higher than the constant oil level, and when the combustion stops, the second oil feed passage sucks residual oil in the second oil feed passage, A second suction pump that returns to the inside is provided.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
If the first electromagnetic pump 8 is turned off to stop the combustion of the first pot burner 1 and the first suction pump 12 is driven for a short time, the first oil feed path 4 in the vicinity of the first pot burner 1 Is returned to a position higher than the constant oil level A in the oil level adjuster 3.
[0006]
Further, if the energization of the second electromagnetic pump 14 is turned off to stop the combustion of the second pot burner 2 and the second suction pump 17 is driven for a short time, the injection nozzle 15 in the vicinity of the second pot burner 2 The fuel oil in the second oil supply passage 13 is returned into the constant oil level A in the oil level adjuster 3.
[0007]
Therefore, no matter which of the two pot burners 1 and 2 is stopped, the remaining oil does not continue to burn and the fire extinguishing time does not become longer, the fire extinguishing time can be shortened, and the first suction pump 12 Since the return of the residual oil from is a position higher than the constant oil level A of the oil level adjuster 3 and the position where the pressure of the constant oil level A is not applied, the fuel oil can be returned smoothly. In addition, the return of the residual oil of the second suction pump 17 is in the constant oil level A of the oil level adjuster 3, but is the fuel oil that has been pressurized by the second electromagnetic pump 14, so it is returned vigorously. However, it is possible to minimize the spilling noise of the fuel oil, and there is no worry of discomfort to the user.
[0008]
【Example】
Next, a combustion apparatus according to the present invention will be described with reference to an embodiment shown in the drawings.
Reference numeral 1 denotes a first pot burner having a bottomed cylindrical shape and a plurality of air holes (not shown) on a peripheral wall, which constitutes a heat source for heating a heat medium such as hot water with combustion heat to perform floor heating or the like. It is.
[0009]
A second pot burner 2 has a bottomed cylindrical shape and has a plurality of air holes (not shown) on the peripheral wall, and heats the room by radiant heating using combustion heat.
[0010]
3 is provided with a float valve (not shown) on the inside, and fuel is always set higher than the bottom of the first pot burner 1 and lower than the lowermost air hole, and lower than the second pot burner 2. It is an oil level regulator which is held at a certain oil level A and supplies fuel oil to the pot burners 1 and 2 as appropriate.
[0011]
Reference numeral 4 denotes a first oil supply passage that communicates the first pot burner 1 and the oil level adjuster 3, and a pressurized pipe that communicates the air chamber 5 around the first pot burner 1 and the oil level adjuster 3 in the middle. 6 is provided, and a supply pipe 9 of a first electromagnetic pump 8 that pumps up the fuel in the oil level adjuster 3 is connected to the rise pipe 7, and the first pot burner 1 is connected to the first pot burner 1. Fuel oil is supplied from the oil feed passage 4 with a natural head, and the pressure pipe 6 causes the oil level adjuster 3 and the first oil feed passage 4 to be in the same pressure state as in the first pot burner 1, Fuel can be supplied smoothly even in gusts and headwinds.
[0012]
Reference numeral 10 denotes an end portion of the first oil supply passage 4, which is a return pipe that opens from the lowermost air hole of the first pot burner 1, rising from a certain oil level A in the oil level adjuster 3, and is opened. Even if the fuel oil accumulates in the first pot burner 1 due to the non-ignition, the return pipe 10 returns it to the oil amount regulator 3 before leaking from the lowermost air hole.
[0013]
Reference numeral 11 denotes a first suction path that communicates the first oil feed path 4 and a position higher than the fixed oil level A in the oil level adjuster 3, and starts driving when the combustion of the first pot burner 1 is stopped in the middle. A first suction pump 12 is provided which sucks the oil level in the oil feed path 4 and returns it to the oil level adjuster 3.
[0014]
Reference numeral 13 denotes a second oil supply passage that allows the second pot burner 2 and the oil level adjuster 3 to communicate with each other. The fuel oil sucked by the second electromagnetic pump 14 is injected into the second pot burner 2 by the injection nozzle 15 on the second pot burner 2 side. The pressure feeding supply is performed by injecting into 2 and supplying.
[0015]
Reference numeral 16 denotes a second suction passage that communicates the second oil feed passage 13 and the constant oil level A in the oil level adjuster 3, and starts driving when the combustion of the second pot burner 2 is stopped. A second suction pump 17 is provided for sucking residual oil in the passage 13 and returning it to the constant oil level A of the oil level adjuster 3.
[0016]
Further, the first suction pump 12 and the second suction pump 17 are provided above and below the mounting plate 18 extended from the upper surface of the oil level adjuster 3 and are provided compactly without taking up installation space. .
[0017]
Next, the operation of this embodiment will be described.
If the first electromagnetic pump 8 is driven to burn the first pot burner 1 now, the fuel pumped up from the oil level adjuster 3 is dropped from the rise pipe 7 through the first oil feed path 4. It is supplied to the first pot burner 1 and ignited by combustion air from a combustion fan (not shown) and appropriate ignition means (not shown) to start combustion.
[0018]
On the other hand, if the second electromagnetic pump 14 is started to burn the second pot burner 2, the fuel oil pumped up from the oil level adjuster 3 is injected from the injection nozzle 15 through the second oil supply passage 13. Then, it is premixed with combustion air supplied from a combustion fan (not shown) and appropriately ignited by ignition means (not shown) to start combustion.
[0019]
Furthermore, the amount of combustion is increased or decreased by adjusting the thermal power by load, manual or automatic, and good floor heating or indoor radiant heating is performed.
[0020]
Next, when the combustion of each pot burner 1 and 2 is stopped, the first electromagnetic pump 8 is first turned off to stop the combustion of the first pot burner 1 and the first suction pump 12 is stopped for a short time. When driven, the fuel oil in the first oil supply passage 4 in the vicinity of the first pot burner 1 is returned to a position higher than the constant oil level A in the oil level adjuster 3.
[0021]
Further, if the energization of the second electromagnetic pump 14 is turned off to stop the combustion of the second pot burner 2 and the second suction pump 17 is driven for a short time, the injection nozzle 15 in the vicinity of the second pot burner 2 The fuel oil in the second oil supply passage 13 is returned into the constant oil level A in the oil level adjuster 3.
[0022]
Therefore, no matter which of the two pot burners 1 and 2 is stopped, the remaining oil does not continue to burn and the fire extinguishing time does not become longer, the fire extinguishing time can be shortened, and the first suction pump 12 Since the return of the residual oil from is a position higher than the constant oil level A of the oil level adjuster 3 and the position where the pressure of the constant oil level A is not applied, the fuel oil can be returned smoothly. In addition, the return of the residual oil of the second suction pump 17 is in the constant oil level A of the oil level adjuster 3, but is the fuel oil that has been pressurized by the second electromagnetic pump 14, so it is returned vigorously. However, it is possible to minimize the spilling noise of the fuel oil, and there is no worry of discomfort to the user.
[0023]
【The invention's effect】
As described above, according to the present invention, the fire extinguishing time of each of the two pot burners can be surely shortened, can be used with peace of mind, and reignition can be easily performed. Since the return position to the oil level adjuster is determined in accordance with the oil level, the residual oil can be returned smoothly and efficiently, and there is no occurrence of failure such as return failure or noise.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view of a combustion apparatus with an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st pot burner 2 2nd pot burner 3 Oil level regulator 4 1st oil supply path 5 Air chamber 6 Pressure pipe 7 Startup pipe 8 1st electromagnetic pump 9 Supply pipe 10 Return pipe 12 1st suction pump 13 1st 2 oil feed passage 14 second electromagnetic pump 15 injection nozzle 17 second suction pump A constant oil level

Claims (1)

Fuel oil is supplied to two pot burners from one oil level adjuster. The oil level of the oil level adjuster is a constant oil level lower than the lowermost air holes of the two pot burners, and further the first pot burner. The first oil supply passage that communicates with the oil level adjuster includes a rising pipe branched from a pressurized pipe that communicates the air chamber of the first pot burner and the oil level adjuster on the way. The supply pipe of the first electromagnetic pump that pumps up the fuel oil in the oil level adjuster is communicated, and the end of the first oil supply path is on the constant oil level of the oil level adjuster, the lowest part of the first pot burner It opens to a position lower than the air hole, and supplies fuel oil with a natural drop to the first pot burner. Further, the second pot burner and the oil level adjuster include a second electromagnetic pump and an injection nozzle. Connected by two oil supply passages, fuel is pumped and supplied by the second electromagnetic pump The first oil supply passage includes a first suction pump that sucks residual oil in the first oil supply passage and returns it to a position higher than a certain oil level of the oil level adjuster when combustion is stopped. A combustion apparatus characterized in that the second oil feed passage is provided with a second suction pump that sucks residual oil in the second oil feed passage and returns it to a constant oil level of the oil level adjuster when combustion is stopped.

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