JPH03137421A - Control apparatus for burner - Google Patents

Abstract

PURPOSE:To automatically stop the operation of a burner when a user is absent after starting the operation, thus enhancing safety, by providing a timer that issues a signal for stopping the operation to the burner when a preset time is measured by the timer, and instructing the continuation of the operation through an instruction device that is manipulated prior to the stopping of the operation. CONSTITUTION:When a user receives the alarm of the approach of the stop of a burning operation and manipulates the switch of an instruction device 15, the presence of the user is ascertained by this manipulation and an instruction signal S3 at an H level is issued. Accordingly, a judgement circuit 13 which simultaneously receives an H level confirmation signal S2 and an H level instruction signal S3, gives a command signal S4 for the continuation of the operation to an operation controlling device 5 to command the continuation of the operation. In a case where the switch of the instruction device 15 is not manipulated even when the alarm is issued, it is judged that the burning is not allowed to continue or the user is absent. Therefore, the judgement circuit 13 does not output the command signal S4, so that the operation is immediately stopped, because the instruction signal S is kept at an L level.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a combustor control device that controls the operation of a heater or other combustor.

(Prior art) A combustor such as this type of heater, for example, a hot air heater,
The heating operation can be started by an operation start signal, for example, from a timer preset device, and automatically stop the heating operation after a desired time has elapsed from the start of operation. .

(Problems to be Solved by the Invention) Setting the operation start time of the combustor using the operation start signal of the timer presetting device or the like has a drawback due to safety issues. In other words, in general, when operating a combustor, if the user starts the ignition and uses a timer device to stop the operation after a desired time from the start of operation, the user has a strong sense that the combustor is in operation. , sufficient precautions should be taken against combustion.

However, if the combustor's operation start time is set in advance on a timer device and the combustor is automatically started by this timer device, the combustion will be faster than when the user starts the operation as described above. It is conceivable that the user's awareness of the combustor may fade, the user may leave the combustor without presetting the start time, or forget it, and the user or other person may no longer be present after the combustor has started combustion. In this case, automatic startup and continued operation may be unsupervised, resulting in a fire due to abnormal heating.In addition, indoor air supply/exhaust type kerosene heaters may suffer from problems such as lack of oxygen if the user does not notice, which is very dangerous. It is also uneconomical.

The present invention aims to solve the above-mentioned problems.
To provide a control device for a combustor with improved safety by starting a timer device from the start of operation of the combustor and automatically stopping the operation of the combustor if no user is present after the start of operation. be.

[Structure of the invention]

(Means for Solving the Problems) The combustor control device of the present invention includes a combustor that starts a combustion operation based on an operation start signal, and a combustor that starts timing in relation to the operation start signal, and The combustor comprises a timer device that generates an operation stop signal to the combustor when a certain period of time has elapsed, and an instruction device that is manually operated before the timer device stops the operation and instructs the continuation of the operation.

(Function) In the combustor control device of the present invention, the combustor starts operation in response to an operation start signal, the timer device also performs a timing operation from the start of operation, and within a certain period of time set by the timer device, the combustor starts operating. When the device is operated, the instruction device instructs the continuation of operation, and the combustor continues to operate. In addition, if the indicating device is not operated when the timer device measures a certain period of time from the start of operation, it may be necessary to prevent combustion from continuing.
This is a case where no one is present, and since no operation continuation signal is output at this time as well, the combustor stops operating.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a block diagram of the case where the present invention is applied to a warm air heater as an example.

The combustor, for example, the hot air heater 1, includes a temperature setting device 2, a temperature control device 13, a combustion control device I4, an operation control device 5, a fuel regulator 6, and an air amount regulator 7.

The temperature setting device 2 is a part that provides a target temperature T.

Further, the temperature control device 3 has a target temperature T and an indoor temperature T.
This is the part that detects the deviation amount from ′ and outputs an output proportional to the deviation amount. Further, the combustion control device 4 changes the opening degrees of the fuel regulator 6 and the air amount regulator 7 based on the output of the deviation amount, and automatically controls the combustion state of a burner (not shown). And the operation control device 5
The ignition, combustion and extinguishing sequences proceed according to a predetermined combustion program.

The control device 11 of the present invention includes a timer device 12,
An indicating device 15 equipped with a determination circuit 13 and an alarm 14
It consists of

The timer device 12 operates at a predetermined elapsed time from the time of the setting operation or at a preset time t.
At time t1, an operation start signal S at, for example, the rHJ level is issued to the operation control device 5 at 0, and a confirmation signal S2 having a certain time width is issued at time t1 after a certain period of time has elapsed from that point, and the determination circuit 13 and the alarm are activated. Send to vessel 14. The time from when the operation start signal S is issued until when the confirmation signal S2 is issued, that is, time t. The time from tl to tl is fixed depending on the combustor, and is constant at least during use. Note that the confirmation signal S2 is transmitted at time t.
, it may also be output periodically. The timer device 12 can be configured as a mechanical clock using a combination of a motor and a rotating plate, or as a digital clock using a combination of a clock signal generator and a counter.

The alarm device 14 is composed of a buzzer, a bell, or the like, and operates based on the confirmation signal S2 from the timer device 12 to issue an alarm to the user and notify the user that combustion has stopped.

The indicator device 15 consists of a manually operated switch such as a push switch or a touch switch attached to a part of the heater or other location, and when the switch is suppressed in response to an alarm from the alarm device 14. , outputs an "H" level instruction signal S.

Further, the determination circuit 13 is a gate circuit that issues a command signal S4 to continue operation to the operation control device 5 under the condition that the confirmation signal S2 and the instruction signal S are at the same rHJ level.

Next, the operation of this embodiment will be explained based on the operation time chart of FIG. 2 and the operation flow chart of FIG. 3.

First, the user sets the target temperature T using the temperature setting device 2, and then sets the target temperature T using the timer device! 2 is the time t for starting operation. Set. The operation starts with this setting operation. After this, the timer device 12 starts at the set time t. The arrival of t is determined and the time t is determined. The operation start signal S1 at the rHJ level is output. When the operation control device 5 receives the operation start signal S1, it connects the power supply, performs the ignition operation and other necessary operations in a fixed order, and starts operation. When the indoor temperature T' is lower than the target temperature T, the combustion operation is started immediately, and when the target temperature T is reached, the combustion operation is stopped. In this way, combustion is automatically turned on and off based on the output of the temperature control device 3 as the indoor temperature T' changes around the target temperature T.

Then, the alarm 14 is activated at time t before combustion stops.

At time tl, a certain period of time has passed since
Upon receiving the confirmation signal S2, an alarm is issued to notify the user that combustion is about to stop. When the switch of the indicating device 15 is operated in response to this alarm, the presence of the person is confirmed,
An instruction signal S1 of rHJ level is generated. therefore,
The determination circuit 13 receives rHJ level confirmation signals S2 and r
Simultaneously receiving the HJ level m indication signal S], a command signal S4 for continuing operation is given to the operation control device 5 to instruct the continuation of operation.

If the switch of the indicator 15 is not operated even if the alarm is issued, it means that combustion is not allowed to continue or there is no person present, so the indicator signal S remains at the rLJ level as shown by the broken line. Therefore, the determination circuit 13 does not output the command signal S4, and the operation immediately stops. At the same time, as the confirmation signal S2 stops, the notification by the alarm device 14 also stops. Therefore, it is possible for the user to clearly determine the point in time when an instruction operation for continuing operation is possible.

Note that even after time t, if the confirmation signal S2 changes to rHJ at regular elapsed time intervals, it is possible to confirm whether the operation is "continuing" or "stopping" each time.

〔Effect of the invention〕

According to the present invention, the combustion operation of a combustor that involves a certain degree of danger, such as a heater, is started based on an operation start signal, and a timer device is activated in relation to this operation start signal, and the operation is started after a certain period of time has elapsed. This prevents dangerous operation such as abnormal heating when the user is absent, and also stops operation after a certain period of time even if the user is asleep or not aware of the ignition. Therefore, even in the case of an indoor air supply/exhaust type, it is possible to prevent oxygen deficiency, making it safe to use.Furthermore, if the user wants to continue operation, the indicating device can be turned off. Continuous operation can be performed by manual operation, and the method of use can be freely selected, which is convenient. Furthermore, since the operation stops after a certain period of time has elapsed after starting, combustion does not continue even if the user is not present, unlike conventional methods, and there is no need to consume excessive amounts of fuel, reducing fuel consumption. It is also possible to save energy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the apparatus of the present invention, FIG. 2 is a time chart of the same operation, and FIG. 3 is a flow chart of the same operation. 12...Timer device, 15... Instruction device. The first fork

Claims (1)

[Claims] (1) A combustor that starts combustion operation based on an operation start signal, and a timer that starts timing in relation to the operation start signal and generates an operation stop signal to the combustor when a preset certain period of time has been measured. 1. A control device for a combustor, comprising: a control device for a combustor; and an instruction device that is manually operated before the timer device stops the operation and instructs the continuation of the operation.