JP2000314549A - Controller of heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the restart of heating operation when a single non-lock switch is operated by a trembling finger to stop, even when the single non-lock switch is used for instructing the start and stop of the heating operation. SOLUTION: After a single non-lock combination switch for instructing start and stop of operation 1 is switched on to instruct to stop the heating operation, the start of the stop processing of heating operation is reported by operating an alarm sound generator 10 for a prescribed duration (for example 0.5 sec.). A central control circuit 11 does not accept the switch-on state of the non-lock combination switch for instructing start and stop of operation 1, which is operated by the trembling finger for a prescribed time (for example 1, sec.), even after the switching operation is released and the non-lock combination switch for instructing start and stop operation 1 is switched off, and the unwanted restart of the heating operation can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for controlling start and stop of a heater operation.

[0002]

2. Description of the Related Art Switches used for manually starting or stopping the operation of a heater include, for example, mechanically maintaining a pressed switch from an open (off) state to a closed (on) state. In addition to the lock type with a continuing mechanism, a closed (on) state is generated only when pressed,
There are non-locking types that return to the original open (off) state when it is released.

In general, when the operation of a heater is started by using a lock-type switch, the on-state of the switch is generated by pressing the switch, and then the on-state is continued even if the pressing is stopped, and the operation is continued. To stop, the same switch is pressed again to return from the on state to the off state.

On the other hand, when a non-locking type switch is used, one of the two switches is pressed to turn on to start the operation, and the other switch is similarly turned on to start the operation. Has been stopped. The method of using the non-locking type switch is not limited to this, and the first ON operation of only one switch is instructed to start the operation, and the operation is stopped by the next ON operation. Some have done it.

[0005]

However, among the above-mentioned lock-type switches, the switches themselves are expensive and difficult to miniaturize, and the failure of the lock mechanism is unavoidable. was there.

On the other hand, when two non-locking switches are used, the occupied area becomes large, and the operation position for instructing the operation and the operation position for instructing the same stop are increased. Since the operation positions are different, there is a high risk of making an operation error and there is a problem that the usability is poor.

On the other hand, when only one non-locking type switch is used, it is inexpensive and occupies a small area as compared with the above-described examples, but it is necessary to operate the switch a plurality of times when it is operated with a shaking fingertip. In some cases, the on operation has been performed over a long period of time, and the operation that should have been stopped has been restarted, and the reliability of the operation has not been sufficiently ensured.

[0008] In this regard, it is possible to reduce the erroneous operation by reducing the sensitivity of the switch operation or the like. The problem remained that it could not be maintained.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems and to realize a safe heater with an inexpensive configuration. In a control device having a central control circuit that controls the start and stop of the operation of the heater based on the operation of the instruction switch and operation stop instruction switch, the central control circuit includes a non-lock type operation start instruction switch and operation stop instruction switch. In addition to determining the operation stop instruction operation to stop the operation of the heater and start driving the notification sound generating device over a first predetermined time, the first predetermined time and a subsequent first predetermined time The control device for the heater is configured such that the operation of the non-locking type operation start instruction switch and operation stop instruction switch is not determined over a longer second predetermined time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is constructed as described above. During a heating operation of a heater, a single non-lock type operation start instruction switch and operation stop instruction switch are operated to operate the heater. When the stop is instructed, the central control circuit determines the operation stop instruction operation of the non-locking type operation start instruction switch and operation stop instruction switch to stop the operation of the heater, and notifies the heater for the first predetermined time. Driving the sound generator, further after the end of this drive, over a second predetermined time longer than the first predetermined time, so as not to determine the operation of the non-locking operation start instruction switch and operation stop instruction switch, Even if the non-lock type operation start instruction switch / operation stop instruction switch is operated with, for example, a trembling fingertip and immediately re-operated, it is not necessary to start the heating operation. Do not determined as of the operation, the heating operation was against the will was not allowed to be resumed recklessly.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are a block diagram and a control sequence diagram of a control device for controlling a liquid fuel combustion heater, respectively.
Is a single non-lock type operation start instruction switch / operation stop instruction switch for instructing the start and stop of the operation of the heater, 2 is a room temperature setting device for setting a target value of the heating temperature, and 3 is a heater for heating. A room temperature detecting device for detecting the temperature of the room, a flame detecting device for detecting the presence or absence of a combustion flame, and a vaporizer temperature detecting device for detecting the temperature of a vaporizer for vaporizing liquid fuel.

Reference numeral 6 denotes an electric heater for heating the carburetor, 7 a fuel pump for feeding fuel to the carburetor, and 8 a blower fan for blowing indoor air to a heat exchanger heated by a combustion flame.

Reference numeral 9 denotes an operation state display device of a display panel for visually displaying the operation state of the heater, and reference numeral 10 denotes a notification sound generation device for audibly notifying the operation state of the heater with a notification sound.

Reference numeral 11 denotes the signals of the above-described non-locking type operation start instruction / operation stop instruction switch 1, room temperature setting device 2, room temperature detection device 3, flame detection device 4, and vaporizer temperature detection device 5, It is a central control circuit that drives and controls the electric heater 6, the fuel pump 7, the blower fan 8, the operation state display device 9, and the notification sound generation device 10.

The embodiment of the present invention is configured as described above, and its operation will be described below.

Now, when the non-lock type operation start instruction switch / operation stop instruction switch 1 is pressed to stop the heating operation of the heater, as shown in FIG.
The central control circuit 11 determines that the non-lock type operation start instruction switch / operation stop instruction switch 1 is ON, and stops the driving of the electric heater 6, the fuel pump 7, and the blower fan 8 to stop the combustion operation. At that time, the display of the operation state display device 9 is switched to the content to that effect, and the notification sound generation device 10 is driven for a predetermined time (for example, 0.5 seconds) to notify that the operation stop operation has been started. .

Next, when the non-locking type operation start instruction switch / operation stop instruction switch 1 is released from being pressed and turned off, the central control circuit 11 determines that the switch is off, and a predetermined time (for example, It is also determined whether or not (for one second) has elapsed, and the determination whether or not the non-locking type operation start instruction switch / operation stop instruction switch 1 is ON is not started until after one second has elapsed. When it is determined that the non-lock type operation start instruction switch / operation stop instruction switch 1 is on after one second has elapsed, it is determined that the operation is not due to an abnormal operation, and the notification sound generation device 10 is driven again. To start the combustion heating operation, and to start the combustion heating operation, the driving of the electric heater 6, the fuel pump 7, and the blower fan 8 is started.

Thus, even when the heating operation is stopped with the finger tip which shakes, or when the stop operation is performed in a hurry, the heating operation is not restarted indiscriminately.

[0020]

As described above, according to the present invention, a non-lock type operation start instruction switch during a heating operation is provided to a control circuit for instructing start and stop of a heating operation by a single non-lock type switch. When the operation stop instruction switch is pressed and the operation stop instruction is issued, the operation is stopped, and a notification sound is emitted for the first predetermined time to notify that the operation stop operation has been performed. During the first predetermined time and the subsequent second predetermined time longer than the first predetermined time, even if the operation start instruction switch / operation stop instruction switch is operated again, the central control circuit starts the operation. Since it is not determined as the operation of the instruction switch / operation stop instruction switch, an erroneous operation start instruction is not issued, and a highly safe heating operation control can be performed. Playable became way. In addition, when an instruction to stop the operation is issued, it can be confirmed by the notification sound, so that the usability is further improved. Furthermore, since a period in which the operation of the operation start instruction switch and the operation stop instruction switch is not determined for a predetermined time after the end of the notification sound is set, it is possible to further increase the certainty of preventing unintended operation restart. It became so.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a control sequence according to an embodiment of the present invention.

[Explanation of symbols]

1: Non-lock type operation start instruction switch / operation stop instruction switch, 10: Notification sound generator, 11: Central control circuit.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02J 1/00 310 H02J 1/00 310Z F term (Reference) 3K068 LA03 MA02 MB01 MB07 MB08 3L028 AB02 AC01 AC06 EA01 EB03 EC02 ED03 3L061 BB04 BC04 BD03 5G065 AA03 JA07 KA01 KA04 LA07 MA07 MA10

Claims (1)

[Claims] 1. A control device comprising a central control circuit for controlling the start and stop of operation of a heater based on the operation of a single non-locking type operation start instruction switch / operation stop instruction switch, wherein the central control circuit (11) The non-lock type operation start instruction switch / operation stop instruction switch (1) determines the operation stop instruction operation, stops the operation of the heating machine, and emits a notification sound generation device for a first predetermined time ( In addition to starting the driving of 10), the non-locking type operation start instruction switch and operation stop instruction switch (1) for the first predetermined time and the subsequent second predetermined time longer than the first predetermined time. A control device for a heater, wherein the operation of the heater is not determined.