JPH10325604A - Liquid fuel burning appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an erroneous assumption of an operation state different from a normal operation state during reduction control by a method wherein, based on a signal from a control means to reduce the generation of unburnt gas, display under operation of reduction control of the unburnt gas is performed. SOLUTION: When control of ignition (or fire extinguishment) is started, a deodorization display part 9a of a display apparatus 9 is lighted ON. This display is brought into visibility by a user, and it is recognized that operation during control of ignition (fire extinguishment) in a state different from normal operation is not abnormal. Further, even when, during ignition (fire extinguishment) control, operation of a stop of operation (or reoperation) is effected, operation to a stop of operation (reoperation) is blocked during a time in which control is completed. That is, a condition of control of ignition (fire extinguishment) in a special operation state is maintained until control is completed. This constitution suppresses the generation of unburnt gas, i.e., the generation of a smell.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an open-type liquid fuel combustion device such as an oil fan heater.

[0002]

2. Description of the Related Art Conventionally, in this type of liquid fuel combustion equipment,
Since the generation of odor due to the unburned gas is observed at the time of ignition or fire extinguishing, attempts have been made to control the combustion state at the time of ignition or fire extinguishing to minimize the above-mentioned generation of unburned gas.

[0003]

The control for suppressing the generation of unburned gas is performed by an operation different from the normal operation, such as forcibly decelerating or stopping the combustion blower. Therefore, it is assumed that the user mistakenly identifies the operation state as abnormal operation.

When a reignition operation is performed during control for suppressing unburned gas generation during fire extinguishing, or when a fire extinguishing operation is performed during control for suppressing unburned gas generation during ignition, unburned gas generation is performed. During normal control mode, the control for suppressing unburned gas generation described above may be broken, and stabilization of odor reduction may be impaired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is possible to avoid erroneous recognition of an operating state during unburned gas generation suppression control, and to stably control unburned gas generation. It is intended to provide a liquid fuel combustion device which can be carried out by performing the above operation.

[0006]

According to a first aspect of the present invention, there is provided a liquid fuel combustion apparatus for reducing unburned gas during ignition or extinguishing to achieve the above-mentioned object. The fuel-burning device includes a control unit for performing the control for reducing the unburned gas, and a display unit for displaying that the control for reducing the unburned gas is being operated based on a signal from the control unit. It is characterized by having.

[0007] A liquid fuel combustion apparatus according to a second aspect of the present invention is a liquid fuel combustion apparatus designed to reduce unburned gas during fire extinguishing. Display means for displaying that the unburned gas reduction control is in operation, wherein the control means is configured to execute the unburned gas reduction control,
The re-ignition process is held in a suspended state.

According to a third aspect of the present invention, in the liquid fuel combustion apparatus according to the second aspect, the reignition process is held for a predetermined time.

According to a fourth aspect of the present invention, there is provided a liquid fuel combustion apparatus configured to reduce unburned gas at the time of ignition. And display means for displaying that the unburned gas reduction control is in operation, wherein the control means places the fire extinguishing process on hold when the unburned gas reduction control is in operation. It is intended to hold.

Further, in the liquid fuel combustion apparatus according to a fifth aspect of the present invention, in the fourth aspect, the suspension of the fire extinguishing process is held for a predetermined time.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an oil fan heater to which the present embodiment is applied. An oil fan heater denoted by reference numeral H in the figure has an outer case 1 constituting its main body, and a substantially front center of the outer case 1. And an openable / closable lid 3 provided on the upper side of the outer case 1 for detaching a fuel cartridge tank (not shown).
And an operation panel 4 provided at the upper front of the outer case 1 and provided with operation means such as switches for setting the operation of the oil fan heater H and display means such as lamps and liquid crystal. 4, an operation base and a control base are provided, and a control device 5 described later is provided on these bases. Further, inside the outer case 1,
Various devices such as a combustion device, a combustion fan, or a convection fan are installed.

More specifically, as shown in FIG. 2, the operation panel 4 includes an operation switch 6 for starting the operation, an operation switch 7 for stopping the operation, and other switches 8 as shown in FIG. A display 9 for displaying operating conditions and operating conditions is provided, and the display 9 includes an oil fan heater H.
Is provided with a deodorizing display section 9a that indicates that the operation of the vehicle is in a control state for suppressing generation of unburned gas.

The control unit 5 includes a control unit 10 which is a main component of the control of the oil fan heater H. The control unit 10 is constituted by a microcomputer having a ROM or a RAM as a storage unit. A control signal for controlling the operation of various loads is output based on the signal.
M11 is connected.

As shown in FIG. 3, on the input side of the control means 10, various switches 6 to 8 provided on the operation panel 4 and various sensors 12 to 16 provided at appropriate places of the oil fan heater H are provided. Is connected, and on the output side,
An indicator 9, a vaporization heater 17 built in the burner, an ignition plug 18 as an ignition device, an electromagnetic pump 19 for supplying fuel from a fuel tank to the burner, a combustion blower 20 for supplying combustion air to the burner, and A convection blower 21 that draws outside air into the outer case 1 to exchange heat with the combustion gas generated in the burner, and then discharges the air to the outside from the outlet 2 is connected.

As the various sensors, a burner thermistor 16 which is provided below the burner and detects the temperature of the burner, and a flame formed in the burner head, that is,
A frame sensor 15 for detecting the state of ignition and a flame formed in the burner head, a rotation speed sensor 14 for detecting a rotation speed of the combustion blower 20, and a remaining fuel of a predetermined level or more of the fuel stored in the fuel tank. A liquid level sensor 13 for detecting the presence or absence, a room temperature sensor 12 for detecting the temperature of the outside air (that is, room air) sucked into the outer case 1 and the like are included.

The various operation processes of the oil fan heater H according to the present embodiment configured as described above will be described below.

First, when the operation-in switch 6 is turned on to instruct the start of operation, the operation lamp is turned on or the operation mode is displayed in characters on the display 9, and the energization to the vaporization heater 17 is started. This vaporization heater 1
7, the vaporizer constituting the burner is heated, and the temperature of the vaporizer is detected by the burner thermistor 16, and when the temperature of the vaporizer reaches a temperature suitable for the ignition operation, the combustion blower 20 Is driven to feed combustion air into the burner.

Then, based on the detection signal from the rotation speed sensor 14, the control means 10 determines whether the rotation speed of the combustion blower 20 has reached the specified rotation speed, and has reached the specified rotation speed. On the condition that a drive signal is output to the ignition plug 18 to perform the ignition operation, a drive signal is output to the electromagnetic pump 19, and the electromagnetic pump 19 is driven so as to have a fuel supply amount peculiar to the ignition operation. As a result, the fuel is ignited, and confirmation of this ignition and confirmation of normal combustion are performed by the flame sensor 15.
Is performed based on the frame current flowing through the frame.

Then, the combustion blower 20 increases its air flow every time the set time elapses, and the normal air flow is obtained after a predetermined time elapses. When the convection blower 21 is driven after a lapse of a predetermined time, the room air is brought into contact with the combustion gas and heated, and then returned to the room, thereby heating the room.

In such an ignition operation, since the convection air blower 21 is stopped in the initial stage, the mixture of fuel and air not only has a slower ejection speed than in the past, but also As a result, the flow of the air-fuel mixture is stabilized, ignition is performed smoothly, and phenomena such as sparks are suppressed, and the generation of unburned gas is suppressed.

Therefore, generation of odor during the ignition operation is suppressed.

Further, when the operation switch 7 is operated to start the fire extinguishing operation, the operation of the electromagnetic pump 19 is stopped, and after a lapse of a predetermined time, the driving of the combustion blower 20 or the convection blower 21 is stopped or decelerated. Let me do.

In this manner, the concentration of the air-fuel mixture immediately before misfire during the fire extinguishing operation is maintained in a flammable state, and the flame is prevented from being blown by the convection wind, so that most of the remaining fuel is burned. As a result, the generation of unburned gas is suppressed, and the generation of odor is suppressed.

On the other hand, in this embodiment, special processing is set to be performed during the above-described ignition control or fire extinguishing control.

That is, at the time of ignition control, FIG.
As shown in the flowchart of (B), when the ignition control is started, the presence or absence of an ignition signal is confirmed in step S1, and on the condition that it is determined that the ignition signal is present,
After the process proceeds to step S2 and the ignition control is started, the process proceeds to the next step S3.

In step S3, a drive signal is output from the control means 10 to the display unit 9, and the deodorizing display unit 9a provided on the display unit 9 is turned on, so that the current operation state is changed. It is notified that the vehicle is in the deodorizing control state.

After the display on the deodorizing display section 9a is performed, in the next step S4, a deodorizing display time is set, and the process proceeds to step S5, where it is determined whether or not a fire extinguishing signal is input. If the fire extinguishing signal is input, the process proceeds to step S7 after the input of the fire extinguishing signal is stored in step S6, and if it is determined that the fire extinguishing signal is not input, the process directly proceeds to step S7. .

In step S7, it is determined whether or not the deodorizing display time set in step S4 has elapsed. If it is determined that the deodorizing display time has not elapsed, the process proceeds to step S5 and subsequent steps. If it is determined that the time has elapsed and the time has elapsed, the process proceeds to the next step S8, and after the display is turned off on the deodorizing display section 9a, the step S8 is performed.
Move to 9.

In step S9, after the ignition control is terminated, the process proceeds to step S10, in which it is determined whether or not the fire extinguishing signal is stored. If it is determined that the fire extinguishing signal is not stored, the process returns to the main routine. If it is determined that there is, the process proceeds to step S11, and after the fire extinguishing control is performed, the process returns to the main routine.

As described above, in the present embodiment, when the ignition control is started, as shown in FIG. 5B, the deodorizing display section 9a of the display 9 is turned on.
By visually recognizing this display, the user recognizes that the operation during the ignition control, which is operating in a state different from the normal operation, is not abnormal.

Further, even when an operation for stopping the operation is performed during the above-described ignition control, the transition to the operation for stopping the operation is prevented during the time B until the ignition control is completed.

As a result, the control conditions of the ignition control which is operated in the special operation state are maintained until the ignition control is completed. From this point, generation of unburned gas, that is,
Odor generation is suppressed.

In the fire extinguishing control, FIG.
As shown in the flowchart, when the fire extinguishing control is started, the process proceeds from the normal combustion control in step S20 to step S21, where the presence or absence of a fire extinguishing signal is confirmed, and on condition that it is determined that there is a fire extinguishing signal. , Step S
After the process goes to step S22 and the fire extinguishing control is started, the process goes to the next step S23.

In step S23, a drive signal is output from the control means 10 to the display section 9, and the deodorizing display section 9a provided on the display section 9 is turned on, so that the current operation state is changed. It is notified that the vehicle is in the deodorizing control state.

After the display on the deodorizing display section 9a is performed, in the next step S24, the deodorizing display time is set, and the process proceeds to step S25, where it is determined whether or not the re-operation signal has been input. If the re-operation signal is input, the process proceeds to step S27 after the input of the re-operation signal is stored in step S26, and if it is determined that the re-operation signal is not input, the process directly proceeds to step S27. Move to S27.

In step S27, it is determined whether or not the deodorizing display time set in step S24 has elapsed. If it is determined that the deodorizing display time has not elapsed, the process proceeds to step S25 and subsequent steps. If it is determined that the time has passed, the process proceeds to the next step S28, and after the display is turned off on the deodorizing display unit 9a, the process proceeds to step S29.

In step S29, after extinguishing the fire extinguishing control, the process proceeds to step S30, and it is determined whether or not the re-run signal is stored. If it is determined that there is, the process proceeds to step S31, and after the restart, the process returns to the main routine.

As described above, in this embodiment, when the fire extinguishing control is started, the deodorizing display section 9a of the display 9 is turned on as shown in FIG.
By visually recognizing this display, the user recognizes that driving during fire extinguishing control, which is operating in a state different from normal driving, is not abnormal.

In addition, even if a restart operation is performed during the fire extinguishing control described above, the restart of the operation is prevented during the time A until the fire extinguishing control is completed.

As a result, the control conditions of the fire extinguishing control operating in the special operating state are maintained until the fire extinguishing control is completed, and from this point, the generation of unburned gas, that is,
Odor generation is suppressed.

The shapes, dimensions, and the like of the components shown in the above embodiment are merely examples, and can be variously changed based on design requirements and the like.

[0043]

As described above, according to the first aspect of the present invention,
According to the liquid fuel combustion device described in the above, while performing the control for reducing the unburned gas at the time of ignition or fire extinguishing, the user is notified by performing the display by the display means. It is possible to prevent an operation state that is different from the normal state in the reduction control from being erroneously recognized as an abnormal operation.

According to the liquid fuel combustion apparatus of the second aspect of the present invention, even if a re-ignition process is performed during unburned gas reduction control at the time of extinguishing, the operation is held in a suspended state. This makes it possible to maintain the control conditions for the unburned gas reduction control, thereby suppressing the generation of unburned gas, that is, the generation of odor.

According to the liquid fuel combustion apparatus of the third aspect of the present invention, the suspension of the reignition processing operation in the second aspect is maintained for a certain period of time, so that unburned gas is generated, that is, odor is generated. Can be reduced as much as possible, and the time until the restart of operation can be shortened.

Further, according to the liquid picture fuel combustion apparatus of the present invention, even if an operation of the fire extinguishing process is performed during the unburned gas reduction control at the time of ignition, the operation is put on hold. By holding, the control condition of the unburned gas reduction control can be maintained, and
Generation of unburned gas, that is, generation of odor can be suppressed.

Further, according to the liquid fuel combustion apparatus according to the fifth aspect of the present invention, the suspension of the fire extinguishing treatment operation according to the fourth aspect is maintained for a certain period of time, so that the generation of unburned gas, that is, the odor is suppressed. It is possible to shorten the time until the start of the fire extinguishing process while minimizing the generation.

[Brief description of the drawings]

FIG. 1 is an external view of an oil fan heater to which a liquid fuel combustion device according to one embodiment of the present invention is applied.

FIG. 2 is a plan view showing an operation panel provided in an oil fan heater to which the liquid fuel combustion device according to one embodiment of the present invention is applied.

FIG. 3 is a block diagram of main components of an oil fan heater to which the liquid fuel combustion device according to one embodiment of the present invention is applied.

FIG. 4 is a flowchart showing a control operation of a control unit in an oil fan heater to which the liquid fuel combustion device according to one embodiment of the present invention is applied.

FIG. 5 is a timing chart showing a control operation of a control unit in the petroleum fan heater to which the liquid fuel combustion device according to one embodiment of the present invention is applied.

[Explanation of symbols]

 9 display 9a deodorant display (display means) 10 control means H oil fan heater

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Tadashi Yamaguchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Yoichi Uchida 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (5)

[Claims] In a liquid fuel combustion device designed to reduce unburned gas at the time of ignition or extinguishing, control means for controlling the reduction of unburned gas and a signal from the control means, Display means for displaying that the unburned gas reduction control is in operation. 2. In a liquid fuel combustion apparatus designed to reduce unburned gas when extinguishing a fire, control means for controlling the reduction of the unburned gas and the control for reducing the unburned gas are in operation. Display means for displaying the refueling process, wherein the control means holds the reignition processing in a suspended state when the unburned gas reduction control is in operation. Combustion equipment. 3. The liquid fuel combustion apparatus according to claim 2, wherein the suspension of the re-ignition processing is maintained for a certain period of time. 4. In a liquid fuel combustion apparatus designed to reduce unburned gas at the time of ignition, control means for performing control for reducing unburned gas, and control for reducing unburned gas is in operation. And a display unit for displaying, when the control for reducing unburned gas is in operation, the fire extinguishing process is held in a suspended state. machine. 5. The liquid fuel combustion apparatus according to claim 4, wherein the suspension of the fire extinguishing process is held for a certain period of time.