JPS6321415A - Fuel supply control device for burner - Google Patents

Abstract

PURPOSE:To prevent the incomplete burning by controlling a fuel pump relative to a control position that sets the hot air temperature generated by a burner and a position sensor that detects the adjusting position of a burning air regulating valve that allows an airflow to a pre-burning chamber. CONSTITUTION:Depending on the amount of grains contained in a dryer, the hot air temperature generated by a burner is set. By manually regulating a regulator valve 4 for burning air introduced into a pre-burning chamber, the burning is started, and the main burning chamber 2 is heated. A fuel pump 1 is controlled relative to the adjusted position of a hot air temperature setting knob and the detected position of the air regulator valve 4 by position sensors 5, 6 so as to control the fuel supply rate to the main burning chamber 2. As the amount of main fuel supply is controlled with the function not only of the hot air temperature set in accordance with the grain amount but also the adjusted position of the burning air regulator valve that allows the air flow into the pre-burning chamber, the burner always performs a stable burning.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a burner supply fuel control device, and can be used as a burner supply fuel control device of a dryer for drying grain.

Conventional technology Conventionally, a pre-combustion chamber for igniting fuel supplied to the main combustion chamber is provided at the bottom of the main combustion chamber with an air control valve for regulating the combustion air ventilated to the pre-combustion chamber. , a fuel supply control device that controls the flow rate of fuel supplied from the fuel pump to the main combustion chamber by a hot air temperature setting fox operating device that sets the temperature of hot air generated from the burner regardless of the adjustment position of the air control valve; Met.

Problems to be Solved by the Invention For example, in a burner used in a dryer, a hot air temperature setting knob is operated to set the temperature of hot air generated from the burner depending on the amount of grain stored in the dryer. The air control valve that sets the temperature of the hot air generated from the burner and adjusts the combustion air vented to the pre-combustion chamber is set depending on the outside air temperature when drying grains.For example, when the outside air temperature is low, the air adjustment valve is set. When the burner starts combustion by manually adjusting the valve to the fully open state and, contrary to the above, when the temperature is high, manually adjusting the air 7A moderation valve to the fully open state.

The main combustion chamber is heated by the combustion flame burning in the pre-combustion chamber, and the fuel pump flows into the main combustion chamber so that the set hot air temperature is reached by operating the hot air temperature setting knob. In this burner, fuel is supplied, the supplied fuel is vaporized in the heated main combustion chamber, and this vaporized fuel is ignited by the combustion flame in the pre-combustion chamber to proceed to main combustion. Start drying by setting the temperature to 55 degrees, and if the outside air is 10 degrees when drying starts, the heating is 45 degrees, and if the temperature is 45 degrees, this burner is in the appropriate combustion range. If the outside temperature drops to 0 degrees in the middle of the night, the heating will be 55 degrees, and if the heating reaches 55 degrees, this burner will be out of the proper combustion range, and if the outside temperature is 1
When the temperature is 0 degrees, the air control valve is in a fully closed position, which causes the burner to run out of air for combustion, leading to incomplete combustion and the production of more carbon and soot. The quality of the grain during drying could deteriorate.

Means for Solving the Problems The present invention provides a pre-combustion chamber (2) located at the bottom of the main combustion chamber (2) for igniting the fuel supplied to the main combustion chamber (2) from the fuel pump (1). 3), this pre-combustion chamber (3)
) and a position sensor (5) that detects the fully closed position of the air control valve (4) that regulates the combustion air ventilated to the air control valve (4).
, (6) are provided, and the detection position of the air control valve (4) by these position sensors (5) and (6) and the operation position of the hot air temperature setting/removal (7) for setting the temperature of the hot air generated from the burner. from the fuel pump (1) to the main combustion chamber (2).
) A fuel supply control device for a burner is characterized in that it includes a pump control device for controlling the flow rate of fuel supplied to the burner.

Effect of the Invention Depending on the amount of grain stored in the dryer, the temperature of the hot air generated from the burner is set by operating the hot air temperature setting knob (7) that sets the temperature of the hot air generated from the burner, and the temperature of the hot air generated from the burner is set. When the burner starts combustion by manually adjusting the air control valve (4) that regulates the combustion air ventilated to the pre-combustion chamber (3), the fuel supplied to the pre-combustion chamber (3) is combusted and a combustion flame is generated. The main combustion chamber (2) is heated by this combustion flame, and the operation position of the hot air temperature setting hole (7) and the air control valve (
Position sensors (5) and (6) that detect the adjustment position of 4)
The fuel pump (1) is controlled by the pump control device in conjunction with the detected position of the air control valve (4) by the fuel pump (1), and the fuel flow rate supplied from the fuel pump (1) to the main combustion chamber (2) is controlled by the pump control device. is supplied in a controlled manner, this supplied fuel is vaporized in the heated main combustion chamber (2), this vaporized fuel is ignited by the combustion flame in the pre-combustion chamber (3), and the main combustion begins. do.

Effects of the invention According to this invention, from the fuel pump (1) to the main combustion chamber (2)
The flow rate of fuel supplied into the interior is determined by the operation position of the hot air temperature setting controller (7), which sets the temperature of the hot air generated from the burner, and the air 7A, which adjusts the combustion air ventilated to the pre-combustion chamber (3).
a position sensor (5) that detects the adjustment position of the m-valve (4);
In conjunction with the detection position of (6), the fuel pump (1) is controlled and supplied by the pump control device, so that the burner always burns in the safe combustion range. Incomplete combustion will not occur.

Example: The illustration shows the burner (9) used for drying It (8).
I will explain about it.

The machine wall (lO) of the dryer (8) is rectangular in plan view and is long in the front and back direction, and consists of front and rear wall plates and left and right wall plates. 9) is installed inside the dryer (8), and an operating device (12) for starting, stopping, and controlling the dryer (8) is installed, and the rear wall plate is equipped with an exhaust air a (13). and the machine wall (lO)
A grain collection gutter (14) equipped with a transfer spiral is provided in the central part of the lower part in the front-rear direction, and drying chambers (15), (15) are provided above the grain collection gutter (14) for communication. In the lower part of this drying chamber (ts), (15), feeding valves (16), (16) for feeding and flowing grains are rotatably supported by the front and rear wall plates, and the drying chamber (15), (15) A hot air chamber (17) is formed between the inner sides, and the hot air chamber (17) and the burner (9) communicate with each other. (17) is provided with a hot air temperature sensor (18) for detecting the hot air temperature in the drying chamber (15).
, (15) Exhaust chambers (19), (13) are formed on the outside, and these exhaust chambers (19), (18) and the exhaust fan (13) are formed.
It has a structure in which it communicates with the
0), and this motor (20) rotationally drives the transfer spiral in the grain collection gutter (10), the delivery valve (1B), (1B), the exhaust fan (13), etc.

A storage chamber (21) is provided above the drying chambers (15), (15), and a ceiling plate (22) and a transfer gutter (23) equipped with a transfer spiral are provided above the storage chamber (21). A supply port for supplying the transferred grains into the storage chamber (21) is provided in the center of the transfer gutter (23), and a diffusion plate (2) is provided below the supply port.
4).

A grain raising machine (25) is attached to the front part of the machine wall (lO), and a packet conveyor (2B) belt is stretched between the upper and lower pulleys inside, and the upper end and the starting end of the transfer gutter (23) are connected to each other. A dispensing pipe (27) is provided between the grain collecting trough (14) for communication, and a supply trough (28) is provided between the lower end and the terminal end of the grain collecting trough (14) for communication. At the top of the machine (25) is a motor (2
9), and the packet conveyor (2B) belt, the transfer spiral in the transfer gutter (23), the spreader plate (20, etc.) are rotationally driven by this seven'-torter (23).

The burner (9) is provided with a pre-combustion chamber (3) on the lower side of a mounting plate (30) provided in the burner case (11), and a main combustion chamber (2) on the upper side. The burner case (11) is inserted into the burner wind pipe (31) in the burner case (11), and the burner case (11) is detachably attached to the front wall plate.

The pre-combustion chamber (3) of the burner (9) is connected to the mounting plate (3).
0) Combustion chamber saucer (32
), and an ignition cloth (33) and an ignition heater (34) are provided on the bottom of this combustion chamber saucer (32), and the combustion chamber saucer (32) is attached to the opening of this combustion chamber saucer (32). ) A position sensor (5) rotatably supports an air control valve (4) for regulating combustion air ventilated into the interior of the air control valve (4), and detects the fully open and fully closed positions of the air control valve (4) 6) is provided on the side wall plate of the combustion chamber saucer (32), and the combustion chamber saucer (32) is provided at the center of the combustion chamber saucer (32).
The main fuel supply shaft (35) protrudes to the inside and outside of the
This main fuel supply shaft (35) has a hole in its shaft core and a supply pipe (3B) in its lower end.

The main combustion chamber (2) is provided with a combustion dish (37) above the main fuel supply shaft (35) having a dish-shaped vent hole (45) through which combustion air passes; is provided with a fuel nozzle (38) having a hole in the center, and an inverted dish-shaped nozzle cover (38) is provided above the fuel nozzle (38).
), the chain hole in the center of the fuel nozzle (3B) communicates with the hole in the shaft core of the main fuel supply shaft (35), and the fuel passes through this hole to the fuel nozzle (38). from the gap between the outer diameter of the nozzle cover (38) and the inner diameter of the nozzle cover (38).
7) The nozzle cover (39)
The structure includes a combustion body (41) having an ejection hole (40) from which combustion flame is ejected on the upper side, and the mounting plate (30)
A hot air guide tube (42) having a cylindrical shape in side view and having an open end was provided on the upper side, and a hot air diffusion plate (43) was attached to the opening at the tip of the hot air guide tube (42). It is the composition.

A fuel pump (1) having a fuel valve is provided inside the side wall plate of the burner case (11).
) and the supply pipe (36) are connected to each other, and this fuel pump (1) is provided with an auxiliary supply pipe (44), and the tip of this auxiliary supply pipe (44) is connected to the ignition cloth (33). This is a configuration located on the upper side.

The operating device (12) is box-shaped, and the surface plate of the box includes a start switch (4B) for starting and stopping the dryer (8), a stop switch (47), and a dryer 4.1.
(8) Grain type setting hole (48) to match the position of the type depending on the type of grain stored in the drying a (8)
A hot air temperature setting hole (7) for setting the hot air temperature according to the position of the amount of grain stored in the burner (9), a display window (43) for displaying the temperature of the hot air generated from the burner (9), etc. are provided. be.

The operating device (12) is provided with a control device (50), a pump control device (51), etc., and the pump control bag 27 (51) is connected to each setting pocket (7), (48). an input circuit (52) into which the operation of is input; an input circuit (53) into which the detection of each of the sensors (5), (6), and (18) is input; and each of these input circuits (52) and (53). The configuration includes a CPU (54) that performs arithmetic and logical operations, comparison operations, etc. on various input values, and an output circuit (55) that receives commands from the CPU (54) and outputs them. (55) In the fuel pump (
The fuel pump (1) controls the flow rate of fuel supplied into the burner (9) by controlling the number of times the fuel valve is opened and closed, and the number of times the fuel valve is opened and closed is as follows: A configuration in which the number of openings and closings is stored in the CPU (54) based on the operation position of each setting knob (7), (4B), the detection position and non-detection position of each sensor (5), (6), etc. and the fuel valve is controlled so that the set hot air temperature and the detected hot air temperature detected by the hot air temperature sensor (18) are compared and if they are different, they become the same. The control bag Zt (50) is an input circuit into which the operations of the switches (46) and (47) are input;
The configuration includes a CPtJ that performs arithmetic and logical operations and comparison operations on various input values input from this input circuit, and an output circuit that receives and outputs various commands issued from this CPU. Each motor (20)
, (213), is configured to control activation and stop of the ignition heater (34) and the like.

Operate each setting knob (7), (48) of the operating device 2t (12) to the specified position, also operate the air 2g1 control valve (4) to the specified position, and operate the start switch (4B). By this, the burner (9) is started at the same time as the dryer (8) is started.
The ignition heater (34) is energized and the ignition heater (34) is energized.
0 becomes red hot, and a certain amount of ignition fuel is supplied from the fuel pump (1) onto the ignition cloth (33), and this supplied fuel is ignited by the ignition heater (34), and the fuel is ignited in the pre-combustion chamber (3). The combustion flame becomes a combustion flame, and this combustion flame burns the main combustion chamber (2).
is heated, and when a certain amount of ignition fuel is supplied, the main fuel is supplied to the main combustion chamber (2), and this main fuel is supplied to the operating positions of the respective setting arcs (7) and (48). n and the 2g1 node position of the air control valve (4), the pump control device (5
1), a predetermined flow rate of fuel is pumped from the fuel pump (1) to the supply pipe (3El), the main fuel supply shaft (35), and the fuel nozzle (
38) and the combustion dish (37) via the nozzle cover (38)
The supplied fuel is vaporized, and this vaporized fuel is ignited by the combustion flame that burns in the pre-combustion chamber (3), transitioning to single combustion and becoming a combustion flame, and this combustion flame becomes hot air.

This hot air is sucked by the exhaust fan (13), and then passes from the hot air chamber (17) to the drying room (15) to the exhaust fan (I3).
The grains that are sucked and exhausted and stored in the dryer (8) are
While flowing down from the storage chamber (21) into the drying chamber (15), the grains are exposed to this hot air and dried, and are fed out to the lower part by the feeding valve (16) and flowed down into the grain collection gutter (14). supplied,
With the transfer spiral in this grain collecting trough (14), this grain collecting trough (14)
), the grain is transferred and discharged into the supply gutter (2 days), and the grain is raised to 41 (
25) is conveyed to the upper part by the packet conveyor (2B), and is supplied into the transfer gutter (23) via the dispensing tube (27), and the transfer spiral in this transfer gutter (23)
is transferred and supplied onto the diffusion plate (24) through the diffusion plate (24).
24), the grains are evenly diffused and returned into the storage chamber (1), and when the moisture value of the grains reaches a predetermined value after being circulated and dried, the grains are automatically controlled by the control device (50) of the operating device (12). The dryer (8) is automatically stopped.

The amount of main fuel supplied from the fuel pump (1) into the main combustion chamber (2) depends on the preset hot air temperature, which is set based on the amount of grain stored in the dryer (8). By taking into consideration the adjustment position of the air adjustment valve (4) that adjusts the combustion air ventilated into the combustion chamber (3),
The burner (9) always provides stable combustion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a flowchart, Fig. 3 is a side sectional view, Fig. 4 is a rear view, and Fig. 5 is a partial sectional view. FIG. 6 is a side view of the entire dryer partially cut away, and FIG. 7 is an enlarged front view of a portion of the dryer. In the figure, (1) is the fuel pump, (2) is the main combustion chamber, (
3) is the pre-combustion chamber, (4) is the air control valve, (5), (6)
indicates the position sensor, and (7) indicates the hot air temperature setting mode.

Claims (1)

[Claims] In a pre-combustion chamber (3) located at the bottom of the main combustion chamber (2) for igniting the fuel supplied from the fuel pump (1) to this main combustion chamber (2), the fully open position of the air control valve (4) that regulates the ventilation air for combustion;
and position sensors (5) and (6) for detecting the fully closed position are provided, and the detection position of the air control valve (4) and the temperature of the hot air generated from the burner are set by these position sensors (5) and (6). A burner characterized by being provided with a pump control device that controls the flow rate of fuel supplied from the fuel pump (1) to the main combustion chamber (2) in conjunction with the operating position of the hot air temperature setting knob (7). supply fuel control device.