JP4198107B2 - Gun type oil burner device - Google Patents

Description

  The present invention relates to a gun type oil burner device.

  Oil (for example, petroleum) supplied from the fuel tank 1 through the fuel supply pipe 2 is supplied to the nozzle 7 by the fuel pump 4 through the fuel supply pipe 3, and is sprayed in the form of a mist at the nozzle 7 to perform combustion (not shown) A combustion apparatus called a gun-type oil burner shown in FIG. 3 (A) that is mixed and burned with working air is well known (for example, see Patent Document 1). In the figure, reference numeral 5 denotes a fuel solenoid valve that is provided in the fuel supply pipe 3 to supply / stop oil as fuel to the nozzle 7.

  In the gun type oil burner device 100X shown in FIG. 3A, the oil in the fuel tank 1 is supplied to the nozzle 7 through the fuel supply pipes 2 and 3 in a high pressure state by the fuel pump 4, and the oil injection of the nozzle 7 The spray oil 21 discharged from the outlet 7A is mixed with combustion air at a predetermined ratio, and is ignited and burned by a discharge spark of a spark plug (not shown).

  However, in the conventional gun-type oil burner device 100X shown in FIG. 3A, when combustion is stopped for a long time, fuel oil remains at the oil outlet 7A of the nozzle 7 when the combustion is stopped. Due to the volatilization of the volatile components of the oil, the remaining portion may harden, and for example, the oil solid 30 may adhere to the oil outlet 7A as shown in FIG.

When the oil solid 30 adheres to the oil outlet 7A, the fuel oil is not ejected uniformly, and the sprayed oil 21 that is discharged from the oil outlet 7A vigorously varies depending on the site, so it is not shown. There was a part that was not mixed with the combustion air at the ideal mixing ratio, and the oil in that part stopped burning completely, and soot was generated in large quantities.
JP 10-096881 A

  Therefore, it is necessary to prevent the fuel oil from burning completely and generating a large amount of soot even when the operation is resumed after a long stop, and a solution to this problem has been demanded.

The present invention provides a gun-type oil burner that supplies oil to a nozzle provided at the tip of an oil supply pipe by a fuel pump interposed in the oil supply pipe, jets the oil from the nozzle tip, and mixes and burns with combustion air In the apparatus, a high-pressure air supply pipe with a solenoid valve interposed is connected to the fuel pump downstream side of the oil supply pipe, and the solenoid valve of the high-pressure air supply pipe is opened after the oil supply to the nozzle is stopped by the operation stop of the fuel pump. A gun-type oil burner device in which high-pressure air is ejected from a nozzle , which is installed in a drive shaft of a fan that supplies combustion air in the vicinity of the nozzle and the high-pressure air supply pipe to generate high-pressure air to generate the high-pressure air A gun type oil burner device characterized in that a drive shaft of an air compressor that flows through an air supply pipe is provided coaxially .

  According to the present invention, after stopping the operation of the fuel pump and stopping the oil supply to the nozzle, the solenoid valve of the high-pressure air supply pipe is opened and high-pressure air is ejected from the nozzle. The fuel oil in the nozzle is blown away by the high-pressure air that is ejected, and the fuel oil does not remain at the oil jet outlet.

  For this reason, the shape of the oil spout does not change due to the hardening of residual oil even if the operation stoppage period is long. There is no inconvenience that a large amount of soot is generated by mixing with air at the ideal mixing ratio at the time of design and complete combustion.

In a gun-type oil burner device that supplies oil to a nozzle provided at the tip of an oil supply pipe by a fuel pump interposed in the oil supply pipe, ejects the oil from the tip of the nozzle, and mixes it with combustion air for combustion. A high pressure air supply pipe with a valve is connected to the fuel pump downstream side of the oil supply pipe, and after stopping the oil supply to the nozzle due to the stoppage of the fuel pump operation, the solenoid valve of the high pressure air supply pipe is opened and the high pressure air is A gun-type oil burner device ejected from a fan drive shaft for supplying combustion air in the vicinity of the nozzle and a high-pressure air supply pipe installed in the high-pressure air supply pipe to generate high-pressure air in the high-pressure air supply pipe The driving shaft of the air compressor that flows is provided coaxially. Further, the fuel pump and the air compressor are driven by one motor, the fan is attached to the drive shaft of the motor so as to operate and stop together with the motor, and the fuel pump and the air compressor are respectively connected to the motor. It is connected to the drive shaft of the motor by a coupling that operates in a connected state and a disconnected state, and in the combustion operation, the fuel pump is connected and the air compressor is disconnected by the coupling. The air compressor is connected by the coupling and the fuel pump is disconnected, and the operation of the fan by the motor is continued for a predetermined time.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In order to facilitate understanding, in these drawings, parts having the same functions as those described with reference to FIG.

  As illustrated in FIG. 1, in the gun type oil burner device 100 of the present invention, a fuel pump 4 and a fuel solenoid valve 5 are connected to a fuel supply pipe 3 connected to a fuel supply pipe 2 extending from a fuel tank 1. The check valve 6 is interposed in series from the upstream side, the nozzle 7 is connected to the downstream end, and is further extended from the air compressor 9 to the downstream side of the check valve 6 of the fuel supply pipe 3. And the high pressure air supply pipe 8 in which the check valve 11 is interposed in series from the upstream side is connected. The check valve 6 prevents high pressure air from flowing into the fuel pump 4 side, and the check valve 11 prevents fuel oil from flowing into the upstream side of the high pressure air supply pipe 8. is there.

  Further, as shown in FIG. 2, a fan 15 is attached to a drive shaft 12A of a motor 12 that drives the fuel pump 4 and the air compressor 9, and from the combustion air 16 and the nozzle 7 supplied by the rotation of the fan 15 The jetted spray oil 21 is mixed in the combustion cylinder 19 at a predetermined ratio, and is ignited by a discharge spark generated between the ignition rod 17 and an electrode (not shown) to form a flame 22 for complete combustion. It is configured.

  Reference numeral 18 denotes a transformer for generating a predetermined high voltage between the ignition rod 17 and an electrode (not shown). In addition, couplings 13 and 14 are provided on the drive shaft 12A as shown in the figure, so that the fuel pump 4 and / or the air compressor 9 can be stopped even during operation of the motor 12. Yes. Further, C is a controller, which includes a microcomputer, a memory, a clock, and the like.

  In the gun type oil burner apparatus 100 of the present invention, when the flame 22 is formed by the combustion operation, the motor 12 is operated with the coupling 13 connected and the coupling 14 disconnected.

  When stopping the operation of the fuel pump 4 and stopping the combustion, the operation of the motor 12 is not stopped immediately and the combustion is stopped, but the coupling 13 is always disconnected based on the control signal output from the controller C. Then, the operation of the fuel pump 4 is stopped, and at the same time, the fuel solenoid valve 5 is closed and the oil supply to the nozzle 7 is stopped to stop the combustion. The motor 12 continues to operate for a predetermined time, for example, 60 seconds, and drives the fan 15 to discharge exhaust gas from the combustion cylinder 19 with the supplied air.

  Further, simultaneously with the disconnection of the coupling 13 by the controller C, the coupling 14 is connected and the air compressor 9 is started, and after a predetermined time, for example, 30 seconds, or the inside of the high-pressure air supply pipe 8 has a predetermined pressure (for example, 0.8 MPa), the air solenoid valve 10 is opened, high pressure air is supplied to the nozzle 7 via the high pressure air supply pipe 8 and the fuel supply pipe 3, and the high pressure air ejected from the nozzle 7 The fuel oil on the downstream side of the high pressure air supply pipe connecting portion of the fuel supply pipe 3 is blown off from the nozzle 7 and discharged.

  Accordingly, since the shape of the oil jet port 7A of the nozzle 7 does not change due to the hardening of the residual oil even if the operation stop period becomes longer, the fuel jetted from the oil jet port 7A even when the operation is resumed after a long-term operation stop. This oil is mixed with combustion air at the ideal mixing ratio at the time of design and burns completely, so that there is no inconvenience that a large amount of soot is generated.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit described in the claims.

  For example, the high-pressure air supply pipe 8 between the air compressor 9 and the air solenoid valve 10 may be configured to be provided with an air tank that stores high-pressure air. When such an air tank is installed in the high-pressure air supply pipe 8, if the coupling 14 is appropriately connected during the operation of the motor 12 to drive the air compressor 9, and the inside of the air tank is maintained at a predetermined pressure, The air solenoid valve 10 can be opened immediately after the fuel solenoid valve 5 is closed. The valve opening time of the air solenoid valve 10 may be 5 to 20 seconds or less.

  If the local equipment can supply high-pressure air, the gun-type oil burner device itself does not include the air compressor 9, and the local equipment-side high-pressure air supply pipe is connected to the high-pressure air supply pipe 8. The effects of the present invention can also be achieved.

  Furthermore, when a plurality of gun-type oil burner devices are installed, the above-described high-pressure air supply pipe on the local equipment side is connected to the high-pressure air supply pipe 8 of each gun-type oil burner device. It is also possible to achieve the effect of.

It is explanatory drawing which shows the whole structure of the gun type oil burner apparatus of this invention. It is explanatory drawing which shows an example of the structure of the gun type oil burner apparatus of this invention. It is explanatory drawing which shows a prior art, (A) is explanatory drawing which shows the whole structure of an apparatus, (B) is explanatory drawing which shows the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel tank 2, 3 Fuel supply pipe 4 Fuel pump 5 Fuel solenoid valve 6 Check valve 7 Nozzle 7A Oil outlet 8 High pressure air supply pipe 9 Air compressor 10 Air solenoid valve 11 Check valve 12 Motor 12A Drive shaft 13 , 14 Coupling 15 Fan 16 Combustion air 17 Ignition rod 18 Transformer 19 Combustion cylinder 21 Spraying oil 22 Flame 30 Solid matter C Controller 100, 100X Gun type oil burner device

Claims (2)

In a gun-type oil burner device that supplies oil to a nozzle provided at the tip of an oil supply pipe by a fuel pump interposed in the oil supply pipe, ejects the oil from the tip of the nozzle, and mixes it with combustion air for combustion. A high pressure air supply pipe with a valve is connected to the fuel pump downstream side of the oil supply pipe, and after stopping the oil supply to the nozzle due to the stoppage of the fuel pump operation, the solenoid valve of the high pressure air supply pipe is opened and the high pressure air is A gun-type oil burner device ejected from a fan drive shaft for supplying combustion air in the vicinity of the nozzle and a high-pressure air supply pipe installed in the high-pressure air supply pipe to generate high-pressure air in the high-pressure air supply pipe A gun type oil burner device, characterized in that it is provided coaxially with the drive shaft of the air compressor to be flown . The fuel pump and the air compressor are driven by one motor, the fan is attached to the drive shaft of the motor so as to operate and stop together with the motor, and the fuel pump and the air compressor are connected to the motor, respectively. Connected to the drive shaft of the motor by a coupling that operates in a disconnected state and a disconnected state, and in the combustion operation, the fuel pump is connected and the air compressor is disconnected by the coupling. 2. The gun type oil burner device according to claim 1 , wherein the air compressor is connected and the fuel pump is disconnected, and the operation of the fan by the motor is continued for a predetermined time .

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