JPS63123922A - Combustion apparatus - Google Patents

Abstract

PURPOSE:To improve safety, by a method wherein, in an apparatus which discharges combustion gas in a room for heating, a fuel pump actuating time is clocked; when the apparatus is stopped, clocking is stopped, and when a clocking time sum amounts to a given fixed value, combustion is forcibly stopped. CONSTITUTION:With an operation switch 6 turned ON, a combustion control part 3 starts combustion according to a given sequence and controls combustion from an output of a temperature control part 2. Meanwhile, simultaneously with starting of combustion feed, a fire extinguishing timer 7 is actuated for combustion feed by means of a motion signal S5 from a fuel regulating part 5 to clock a combustion cumulative time. When a clocking time amounts to a fixed value, a fire extinguishing timer 7 outputs a stop signal S1 for fire extinguishment. Further, from a point of time before it amounts to a fixed value, a signal S2 is outputted to an alarming part 9 and a comparing deciding part 8 for alarming. By operating a switch 10 by a user, the comparing deciding part 8 outputs a signal S4 to continue operation. This constitution improves safety.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion apparatus that takes indoor air, burns it, and releases the combustion gas into the room for heating.

BACKGROUND ART In general, in this type of combustion apparatus, as shown in FIG. 4, when an operation switch 15 is turned on, combustion is started by the action of a combustion control section 16, and the combustion gas is discharged into the room for heating. Then, a room thermometer (not shown) of the combustion control section 16 repeatedly turns combustion ON and OFF to maintain the room temperature at a set temperature.

Problems to be Solved by the Invention However, this combustion device requires that the operation switch 15 be turned off.
Until this happens, this combustion will continue even though the combustion is turned off. Therefore, if you continue to use the room with it closed, the room will become deficient in oxygen, so it is necessary to ventilate the room from time to time. However, if the user accidentally falls asleep during heating, ventilation is not performed and the operation switch 15 is not turned OFF, so combustion continues, which may lead to an accident.

The present invention was made in view of this point, and is aimed at improving safety.

Means for Solving the Problems In order to achieve the above object, the present invention includes a combustion control section that starts combustion when the operation switch is turned on, and a timekeeping operation that performs a timing operation during the operation period of the pump that supplies fuel to the combustor. A fire extinguishing timer is provided which interrupts the time counting operation when stopped and forcibly stops the combustion by the combustion control section when the timed value reaches a preset value.

Effects The present invention has the above-described configuration, and can be used for a predetermined period of time after the start of combustion without the user performing any operation before the start of combustion.

Once the time has elapsed, combustion will be forcibly stopped, making it possible to prevent oxygen deficiency accidents even if the user falls asleep.

EXAMPLES Below, examples of the present invention will be described based on FIG.
The combustion device is composed of a temperature setting section 1, a temperature control section 2, a combustion control section 3, a fuel adjustment section 4, an air amount adjustment section 6, and further includes a fire extinguishing timer 7, a comparison determination section 8, an alarm section 9, and a timer. A switch section 10 for continuation is provided. Combustion control section 3
is an output from the temperature control section 2 that starts combustion according to a predetermined sequence when the operation switch 6 is turned on, and outputs an output according to the difference between the temperature set in the temperature setting section 1 (set temperature) and the room temperature. The fire extinguishing timer 7, which is initialized and controls the fuel regulator 4 and the air amount regulator 5, operates only while the operating signal S of the fuel regulator 4 is ON, and when the signal S5 is OFF. During this period, the operation is interrupted without restoring the contents of the fire extinguishing timer 7 to its initial state. Then, when an unchangeable period of time mechanically set in advance, for example 3 hours has elapsed, a combustion stop signal S1 is output to the combustion control section a. Further, the fire extinguishing timer 7 continuously outputs the signal S2 to the alarm section 9 and the comparison/judgment section 8 until 3 hours have elapsed after 2 hours and 45 minutes, for example, 15 minutes before the mechanically set time elapses. do. On the other hand, the switch section 10 outputs the signal S3 to the comparison/judgment section 8 if the user operates it arbitrarily or knowing the alarm (display) of the alarm section 9 issued based on the signal S2. The comparison/judgment section 8 outputs the signal S3 from the switch section 10 only when the signal S2 from the extinguishing timer 7 is output.
When input, a signal S is sent to the combustion control unit 3 and the extinguishing timer 7.
.

is output, instructing the combustion control unit 3 to continue operation and resetting the fire extinguishing timer 7 to its initial state.

In the above configuration, when the user turns on the operation switch 6, the combustion control section 3 starts combustion based on a predetermined sequence, and controls the combustion based on the output from the temperature control section 2. Control. When the supply of fuel is started, the extinguishing timer 7 starts operating at the same time and measures the actual combustion accumulation time.

From now on, we will explain using the flowchart in Figure 2.
Combustion continues at 0N10FFL based on the output from temperature control 2 until a predetermined mechanical time (predetermined time = 3 hours) is reached until extinguishing. At that time, when the cumulative time of only combustion ON reaches the time before the predetermined time (predicted time = 2 hours and 45 minutes), the extinguishing timer 7 outputs a signal S2.
is output, and the alarm section 9 issues an alarm (for example, a sound such as a buzzer or a display such as lighting or flashing of a lamp). The user does not notice this alarm and time continues to advance without operating the switch unit 10, and when the predetermined time (3 hours) comes, the fire extinguishing timer 7 outputs the signal S, and the combustion control unit 3 forces combustion. to stop. In other words, combustion can be stopped without the user performing any action to stop combustion or setting a timer for stopping combustion before starting combustion. Therefore, by appropriately determining the combustion stop time, that is, the setting time of the fire extinguishing timer 7, it is possible to reliably prevent accidents such as oxygen deficiency even when the user falls asleep.

Furthermore, since the combustion continuation is determined based on the cumulative combustion time, if the room temperature is kept at the set temperature while turning off the combustion using a room thermostat, etc., for example, if the room temperature is higher than the setting and the combustion is turned off, When there is no need to worry about accidents such as lack of oxygen for a long time, it can be used for a long time without operating the switch section 10 for continuing the timer each time, and the usability is improved.

Further, in this embodiment, if the user operates the switch section 10 after knowing the warning before combustion stops, the signal S3 is sent to the comparison/judgment section 8.
Since the comparison/judgment section 8 inputs the signal S2 from the fire extinguishing timer 7, the signal S4 is output. Is this a fire extinguisher? -7 is reset to the initial state, time starts counting again from -7, and the combustion control unit 3 continues combustion.

In other words, if the user knows that a predetermined period of time has elapsed since the start of combustion and wants to continue the combustion, he or she can continue the combustion. Of course, at this time, the user knows that a predetermined amount of time has elapsed since the start of combustion, so he or she must take measures to prevent accidents such as oxygen deficiency by opening the window or ventilating the room. In addition, after the combustion is continued by operating the switch unit 10 as described above, the fire extinguishing timer 7 starts operating from - again as described above, so that when a predicted or predetermined time has elapsed, the above-mentioned operation is performed and safety is ensured. combustion is ensured, and combustion can be continued further if necessary.

The above embodiment is shown as an example of the present invention, and any configuration may be used as long as it achieves the purpose and effect of the present invention.For example, as shown in Fig. 3, a fire extinguishing timer 7 is a signal for the basic timer section 7a and the combustion control section 3 to control the fuel regulator 4. From this signal, the state in which the operation of the combustion regulator 4 is to be stopped is decoded, and the basic timer section 7a is instructed to interrupt the operation. a level decoder 7d that outputs a signal S;
! :, consists of a fire extinguishing timer part 7b which sets the time until the extinguishment is determined by a certain percentage, and a predictive timer part 7c which sets the time to issue an alarm etc. before the elapse of the above-mentioned extinguishing time. Compare and determine the output of the unit 9a.

8b and 8 may be compared and the quasi-movement may be performed as described above, and various other methods may be considered.

Further, the circuit configuration of such a circuit can be simplified by using a microcomputer.

Furthermore, the time until extinguishment and the time until alarm can be set appropriately according to the calorific value of the combustion device, and the time can be set as an unchangeable time (a time that cannot be changed) as described in the embodiment, or If it is installed in a place covered by the exterior of the main body and extremely difficult for the user to change freely, it may be possible for the manufacturer to change it according to the amount of heat generated by the combustion device.

Effects of the Invention As is clear from the description of the embodiments, according to the present invention, combustion can be carried out for a predetermined period of time without the user having to take any actions such as setting a timer for stopping the operation before starting the operation. If you do this, combustion will be forcibly stopped, so combustion will not continue for a long time without the user being aware of it, and accidents such as oxygen deficiency can be reliably prevented, and the actual combustion time will be shorter. Since the judgment is made cumulatively, the continuous operation time changes depending on the progress of the oxygen deficiency state, the degree of ventilation required, etc., and this has the effect of improving usability.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a combustion device according to an embodiment of the present invention, Fig. 2 is a flowchart of the same operation, Fig. 3 is a block diagram showing another embodiment of the same, and Fig. 4 is an explanatory diagram of a conventional example. be. 3... Combustion control section, 6... Operation switch, 7... Fire extinguishing timer, 1o... Switch section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (2)

[Claims] (1) A combustion control unit that starts combustion when the operation switch is turned on, a pump that supplies fuel to the combustor, and a timer that performs a timing operation while the pump is in operation and interrupts the timing operation when the pump stops. and a fire extinguishing timer for forcibly stopping the combustion control section when the value of the timer reaches a fixed time value mechanically set in advance. (2) The combustion device according to claim 1, further comprising a switch unit that initializes the value of the timer when manually operated before the combustion control unit is forcibly stopped by a fire extinguishing timer. .