JP2002221356A - Burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burner which can properly prevent starting of combustion, contrary to the intention of a user. SOLUTION: This burner starts burning action, by input operation being performed to an ignition/extinguishing switch 2, after an input operation is performed to an operation on/off switch 3, and this is equipped with the first detection means which detects the input operation being performed continuously for a certain time of longer to the operation on/off switch 3, the second detection means which detects the input operation being performed to the ignition/ extinguishing switch 2, within a prescribed time from the point of detection by the first detection means, and a combustion start control means which starts the combustion movement by the detection by the second detection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus such as a natural circulation type bath, a gas cooker or a gas stove.

[0002]

2. Description of the Related Art In a natural circulation bathtub, water is naturally circulated between the bathtub and the bathtub by burning the bathtub with the bathtub filled with water, and the temperature of the water rises. . In such a conventional natural circulation type bath kettle, a water level sensor for detecting a water level in a bathtub is not provided, and a user is required to
Combustion is started by pressing an operation switch of a remote controller installed in a bathroom and then pressing an ignition switch.

[0003]

However, in the above-mentioned conventional natural circulation type bath kettle, if a part of the body comes into contact with the ignition switch while the operation switch is on, combustion starts. Further, when the operation switch and the ignition switch are sequentially contacted, for example, when cleaning the bathroom including the remote controller, the combustion is started. That is, there has been a problem that the start of combustion unintended by the user occurs, and there is a possibility that the fuel cell may be idle.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above points, and has as its object to provide a combustion apparatus capable of favorably preventing the start of combustion unintended by a user.

[0005] In order to solve the above problems, the present invention provides:
The following technical measures have been taken:

According to the first aspect of the present invention, after the input operation is performed on the first switch, the input operation is performed on the second switch, thereby starting the combustion operation. A first detecting means for detecting that an input operation has been performed on the first switch continuously for a certain period of time or more, and a second switch within a predetermined time from a detection time point by the first detecting means. A second aspect of the present invention provides a combustion apparatus including: a second detection unit that detects that an input operation has been performed; and a combustion start control unit that starts a combustion operation based on detection by the second detection unit.

According to a preferred embodiment, there is provided a notifying means for notifying the detection by the first detecting means.

According to a second aspect of the present invention, a combustion device starts a combustion operation by performing an input operation on a second switch after an input operation is performed on a first switch. A first detecting means for detecting that an input operation has been performed on the first switch, and an input to the second switch after a lapse of a predetermined time from a detection time by the first detecting means. A combustion apparatus is provided, comprising: a second detection unit that detects that an operation has been performed; and a combustion start control unit that starts a combustion operation based on detection by the second detection unit.

According to a preferred embodiment, there is provided a notifying means for notifying that a predetermined time has elapsed from the time of detection by the first detecting means.

According to a third aspect of the present invention, a combustion device which starts a combustion operation by performing an input operation on a second switch after an input operation is performed on a first switch. A first detection means for detecting that an input operation has been performed on the first switch; a time point when a first predetermined time has elapsed from a time point detected by the first detection means; A second detection unit that detects that an input operation has been performed on the second switch before the time has elapsed; and a combustion start control unit that starts a combustion operation based on detection by the second detection unit. A combustion device is provided, comprising:

According to a preferred embodiment, the time when the first predetermined time has elapsed from the detection time by the first detection means is defined as the start time, and the time when the second predetermined time has elapsed from the start time is defined as the end time. The period from the time to the end,
There is provided a notification unit for notifying that the combustion start operation for the second switch is effectively received.

According to a fourth aspect of the present invention, there is provided a combustion apparatus having a single switch for both ignition and fire extinguishing, wherein the ignition operation is performed by successively pressing the switches a plurality of times, and In addition, there is provided a combustion device characterized in that the number of times of operation of the switch is different between the ignition operation and the fire extinguishing operation.

According to a preferred embodiment, the ignition operation is an operation in which the switch is pressed twice in succession. When the switch is pressed once in the non-combustion state, the combustion is performed by one more switch operation. It has a notifying means for notifying that it is started.

According to a fifth aspect of the present invention, there is provided a combustion apparatus having an ignition switch and a fire extinguishing switch, wherein the ignition switch for ignition is operated a plurality of times. Further, a combustion device is provided, wherein the number of times of operation of an ignition switch for ignition and the number of times of operation of a fire extinguishing switch for extinguishing are different from each other.

According to a preferred embodiment, the number of operations of the ignition switch for ignition is two, and when the ignition switch is pressed once during non-combustion, one more time is required.
There is a notifying means for notifying that the combustion is started by each time the switch is operated.

According to a sixth aspect of the present invention, there is provided a combustion apparatus having one operation switch, one ignition switch, and any other number of switches, wherein the operation switch is provided. After the operation, one of the other switches is operated, and then the ignition switch is operated to start combustion, thereby providing a combustion device. .

According to a seventh aspect of the present invention, there is provided a combustion apparatus having a plurality of switches including one ignition switch, wherein the ignition switch and any other number of switches are simultaneously operated. Thus, a combustion device is provided, in which combustion is started.

[0018] Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a front view of a remote controller of a natural circulation bathtub as an example of a combustion device according to the present invention. The remote controller 1 includes an ignition / extinguishing switch 2, an operation on / off switch 3, a timer time extension switch 4, a timer time reduction switch 5, a combustion lamp 6, and a combustion time indicator 7. The combustion lamp 6
It is composed of light emitting diodes. The burn time indicator 7 is composed of two sets of numerical display devices each having seven light emitting diodes.

FIG. 2 is a circuit block diagram of a control section of a natural circulation bathtub as an example of the combustion apparatus according to the present invention. The control unit includes a CPU 11, a ROM 12, a RAM 13,
And an interface circuit 14. The CPU 11, the ROM 12, the RAM 13, and the interface circuit 14 are mutually bus-connected. The interface circuit 14 includes an ignition / extinguishing switch 2, an operation on / off switch 3, a timer time extension switch 4, a timer time reduction switch 5, a combustion lamp 6, a combustion time indicator 7, an electromagnetic on / off valve 8, an ignition device 9, And the frame rod 10 are connected. The solenoid on-off valve 8 opens and closes a gas supply path for supplying gas to the burner. The ignition device 9 ignites the gas injected from the burner. The flame rod 10 detects the burner flame.

FIG. 3 is a flowchart of the control operation by the control unit. The operation of the natural circulation bath kettle according to the present embodiment will be described with reference to this flowchart.

First, the CPU 11 operates the operation ON / OFF switch 3
It is determined whether or not is turned on (S1).

If the operation ON / OFF switch 3 is ON (S1: YES), the CPU 11 starts a first timer (S2). The first timer is set to, for example, 0.7 seconds. The first timer is realized using, for example, a counter that counts clocks of a predetermined cycle.

Next, the CPU 11 sets the operation on / off switch 3
It is determined whether or not is turned off (S3).

If the operation on / off switch 3 has not been turned off (S3: NO), the CPU 11 determines whether or not the first timer has expired (S4).

If the first timer has expired (S
4: YES), the CPU 11 turns on the combustion time indicator 7 (S5). The burn time indicator 7 displays the burn time of the burner, and corresponds to a set time of a third timer described later. The combustion time, that is, the set time of the third timer increases when the user presses the timer time extension switch 4 and decreases when the user presses the timer time reduction switch 5.

Next, the CPU 11 starts the second timer (S6). The second timer is set to, for example, 10 minutes. The second timer is realized using, for example, a counter that counts clocks of a predetermined cycle.

Next, the CPU 11 determines whether or not the second timer has expired (S7).

If the second timer has not expired (S7: NO), the CPU 11 sets the ignition / fire switch 2
It is determined whether or not is turned on (S8).

If the ignition / extinguishing switch 2 is on (S8: YES), the CPU 11 resets the second timer (S9).

Next, the CPU 11 starts the combustion (S
10). Specifically, the CPU 11 opens the gas supply path by opening the electromagnetic on-off valve 8 and operates the ignition device 9 to ignite the gas ejected from the burner. CPU 11
However, when the flame of the burner is detected by the flame rod 10, the combustion lamp 6 is turned on.

Next, the CPU 11 starts a third timer (S11). The third timer is set by the user operating the timer time extension switch 4 and the timer time reduction switch 5. The set time of the third timer is displayed on the combustion time display 7 as the combustion time. The third timer is realized using, for example, a counter that counts clocks of a predetermined cycle. The user sets the time period of the third timer after the combustion time indicator 7 is turned on in step S5, for example. The setting of the third timer is possible at any time during operation, and of course, even after the start of combustion. Further, since the initial value of the third timer is set to 5 minutes, the time is up by 5 minutes if there is no setting change operation by the user.

Next, the CPU 11 determines whether or not the third timer has expired (S12).

If the third timer has not expired (S12: NO), the CPU 11 determines whether the ignition / extinguishing switch 2 is on (S13).

If the ignition / extinguishing switch 2 is not on (S13: NO), the CPU 11 determines whether or not the operation on / off switch 3 is on (S14).

If the operation on / off switch 3 is not turned on (S14: NO), the combustion time has not elapsed, and the ignition / extinguishing switch 2 and the operation on / off switch 3 have been operated by the user. Therefore, the process returns to step S12 to continue the combustion.

If the operation ON / OFF switch 3 is turned on in step S14 (S14: YES), it means that the user has performed the operation stop operation during the combustion.
U11 resets the third timer (S15).

Next, the CPU 11 stops the combustion (S1).
6), this routine ends. Specifically, the CPU 1
1 closes the electromagnetic on-off valve 8 and shuts off the gas supply path. The CPU 11 turns off the combustion time indicator 7 and turns off the combustion lamp 6 when the flame extinguishing is detected by the frame rod 10.

In step S13, if the ignition / extinguishing switch 2 is ON (S13: YES), it means that the user has performed the fire extinguishing operation during the combustion, and the process proceeds to step S15.

If it is determined in step S12 that the third timer has expired (S12: YES), it means that the set combustion time has elapsed.
Proceed to.

In step S8, if the ignition / extinguishing switch 2 is not turned on (S8: NO), step S8 is executed.
7 and waits for the ignition / extinguishing switch 2 to be turned on.

In step S7, if the second timer has expired (S7: YES), the user operates the ignition / extinguishing switch 2 within a predetermined time after the operation of the operation ON / OFF switch 3 is received. Since it was not operated, the CPU 11 turns off the combustion time indicator 7 (S
17), and return to step S1.

If it is determined in step S4 that the first timer has not expired (S4: NO), it means that the predetermined time has not elapsed since the user started pressing the operation ON / OFF switch 3. The process returns to step S3 and waits for a predetermined time to elapse.

In step S3, if the operation on / off switch 3 is off (S3: YES), it means that the user has not continued the pressing operation of the operation on / off switch 3 for a predetermined time. Then, the first timer is reset (S18), and the process returns to step S1.

In step S1, if the operation ON / OFF switch 3 is not turned on (S1: NO), step S1 is executed.
Return to step 1 and wait until the operation on / off switch 3 is turned on.

As described above, the combustion is started on condition that the operation ON / OFF switch 3 is continuously pressed for a certain period of time or more and the ignition / extinguishing switch 2 is pressed within a predetermined time thereafter. , Part of the user's body
When the fire switch 2 or the operation on / off switch 3 is accidentally touched, the combustion is not started, and the start of the combustion unintended by the user can be favorably prevented.

When the operation on / off switch 3 is continuously pressed for a certain period of time or longer, a display is made on the combustion time display 7 so that the user can press the ignition / extinguishing switch 2 to operate. It can be known that the combustion is started.

FIG. 4 is a flowchart of the control operation by the control unit in another embodiment. As described above, the input of the ignition / extinguishing switch 2 is not accepted until the set time of the first timer elapses after the operation on / off switch 3 is turned on (S2, S4), and the set time of the first timer elapses. If the ignition / extinguishing switch 2 is turned on during the period from the point of time when the set time of the second timer elapses (S7, S8: Y
ES), combustion may be started (S10). Of course, the set time of the first timer and the second timer is
It does not need to be the same as in the embodiment shown in FIG. 3 and may be set appropriately.

In this way, combustion does not start when a part of the user's body accidentally touches the ignition / extinguishing switch 2 and the operation on / off switch 3 sequentially in a short time. In addition, the start of combustion unintended by the user can be favorably prevented. Further, there is no need to perform a troublesome operation of pressing a plurality of switches such as the operation on / off switch 3 and the ignition / extinguishing switch 2 many times in a predetermined order.
Usability is improved. Furthermore, an ignition / extinguishing switch 2
Alternatively, since the operation of continuously pressing the operation ON / OFF switch 3 for a predetermined time or longer is unnecessary, the operation by the excessive pressing force that is often required when the switch is long pressed is eliminated, and the ignition / extinguishing switch 2 and the It is not necessary to set the strength of the operation on / off switch 3 itself or the strength of its support mechanism large.

When the set time of the first timer elapses, a display is made on the combustion time display 7 so that the user can press the ignition / extinguishing switch 2 within a predetermined time to start combustion. It is possible to know that it is in the state of being done.

In the embodiment shown in FIG. 4, a second timer is provided, and the ignition / extinguishing switch 2 is turned on from the time when the set time of the first timer elapses to the time when the set time of the second timer elapses. If the ignition / extinguishing switch 2 is turned on at any time after the set time of the first timer has elapsed, the combustion is not started. It may be.

FIG. 5 is a flowchart of a control operation by the control unit according to still another embodiment. As described above, after the input of the operation on / off switch 3 is received, the combustion may be started when the ignition / extinguishing switch 2 is pressed twice by the user (S21 to S25). The second timer in this embodiment is for preventing a user's one press operation of the ignition / extinguishing switch 2 from being erroneously recognized as two or more presses, and is set to a short time. A is a variable and is set to 0 at the time of initial setting such as when the power is turned on.

In this way, the ignition / extinguishing switch 2
Since the combustion is not started unless is pressed twice, the start of the combustion unintended by the user can be favorably prevented.

Further, when the operation ON / OFF switch 3 is continuously pressed for a predetermined time or more, a display is made on the combustion time display 7 so that the user can set the ignition / extinguishing switch 2 to two.
It is possible to know that the combustion is started by performing the pressing operation twice.

In the embodiment shown in FIG.
After the off switch 3 is continuously pressed for a predetermined time or more,
Combustion starts when the ignition / fire switch 2 is pressed twice, but starts combustion when the ignition / fire switch 2 is pressed twice after the operation on / off switch 3 is pressed once. You may do so. Of course, ignition
The number of times the fire extinguishing switch 2 is pressed is not limited to two, and combustion may be started by pressing the fire extinguishing switch 2 three or more times.

In the embodiment shown in FIG. 5, a common ignition / extinguishing switch 2 is provided for ignition and fire extinguishing. However, an ignition switch and a fire extinguishing switch may be provided separately.

In the embodiment shown in FIG. 5, the combustion is started by pressing the ignition / extinguishing switch 2 twice, but the operation ON / OFF switch such as the timer time extension switch 4 or the timer time reduction switch 5 is used. After the switches other than 3 and the ignition / extinguishing switch 2 are pressed,
The ignition / extinguishing switch 2 may be pressed to start combustion. Alternatively, an operation ON / OFF switch 3 and an ignition / extinguishing switch 2 such as a timer time extension switch 4 or a timer time reduction switch 5
The combustion may be started by simultaneously pressing other switches and the ignition / extinguishing switch 2.

In each of the above embodiments, a natural circulation type bath is used as a combustion device. However, the present invention can be applied to other combustion devices such as a gas cooker and a gas stove.

[0060]

As described above, according to the present invention,
Combustion is not started only by pressing the operation switch and the ignition switch one by one continuously, so that the start of combustion unintended by the user can be prevented well.

[Brief description of the drawings]

FIG. 1 is a front view of a remote controller of a natural circulation bathtub as an example of a combustion device according to the present invention.

FIG. 2 is a circuit block diagram of a control unit of a natural circulation bathtub as an example of the combustion device according to the present invention.

FIG. 3 is a flowchart of a control operation by a control unit.

FIG. 4 is a flowchart of a control operation by a control unit according to another embodiment.

FIG. 5 is a flowchart of a control operation by a control unit according to still another embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 remote controller 2 ignition / extinguishing switch 3 operation on / off switch 4 timer time extension switch 5 timer time reduction switch 6 combustion lamp 7 combustion time indicator 8 solenoid on / off valve 9 ignition device 10 flame rod 11 CPU 12 ROM 13 RAM 14 interface circuit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Norihiro Miyamoto, Inventor, Noritsu, 93, Edo-cho, Chuo-ku, Kobe, Hyogo (72) Inventor Yasuo Tauchi 93, Edo-cho, Chuo-ku, Kobe, Hyogo, Japan (72) Inventor Toshiki Tachibana 93, Edo-cho, Chuo-ku, Kobe-shi, Hyogo Prefecture Inside Noritz Co., Ltd. 3K005 GA11 GC07 3K068 NA05 NA07 3L024 CC06 DD22 EE05 FF05 FF09 GG50 HH60

Claims (12)

[Claims] 1. A combustion device that starts a combustion operation by performing an input operation on a second switch after an input operation is performed on a first switch, wherein the first switch is A first detection means for detecting that an input operation has been performed continuously for a predetermined time or more, and an input operation to the second switch is performed within a predetermined time from a detection time by the first detection means. A second detection means for detecting the occurrence of the combustion, and a combustion start control means for starting a combustion operation based on the detection by the second detection means. 2. The combustion device according to claim 1, further comprising a notifying unit for notifying the detection by the first detecting unit. 3. A combustion device that starts a combustion operation by performing an input operation on a second switch after an input operation is performed on a first switch, wherein the first switch is operated. First detecting means for detecting that an input operation has been performed on the second switch, and detecting that the input operation has been performed on the second switch after a predetermined time has elapsed from the time point of detection by the first detecting means. A combustion apparatus comprising: a second detection unit for detecting; and a combustion start control unit for starting a combustion operation based on the detection by the second detection unit. 4. The combustion apparatus according to claim 3, further comprising a notifying unit for notifying that a predetermined time has elapsed from the time point of detection by said first detecting unit. 5. A combustion device which starts a combustion operation by performing an input operation on a second switch after an input operation is performed on a first switch, wherein the first switch is operated. First detecting means for detecting that an input operation has been performed on the first and second detecting means; In the meantime, there are provided a second detection unit for detecting that an input operation has been performed on the second switch, and a combustion start control unit for starting a combustion operation based on the detection by the second detection unit. The combustion device. 6. A method according to claim 1, wherein a start time is a time when a first predetermined time has elapsed from the detection time by said first detection means, and an end time is a time when a second predetermined time has elapsed from the start time. The combustion device according to claim 5, further comprising a notification unit that notifies that the combustion start operation for the second switch is effectively received during a period up to a time point. 7. A combustion apparatus having a single switch for both ignition and fire extinguishing, wherein the ignition operation is performed by continuously pressing the switch a plurality of times, and the ignition operation and the fire extinguishing operation are performed separately. A combustion device characterized in that the number of times the switch is operated is varied. 8. The ignition operation is an operation in which the switch is pressed twice consecutively. When the switch is pressed once in a non-combustion state, combustion is started by one more switch operation. The combustion device according to claim 7, further comprising a notification unit that notifies the combustion engine. 9. A combustion device having an ignition switch and a fire extinguishing switch separately, wherein the ignition switch for ignition is operated a plurality of times, and the ignition switch is operated for a plurality of times. A combustion apparatus characterized in that the number of operations of an ignition switch and the number of operations of a fire extinguishing switch for extinguishing a fire are different from each other. 10. The number of times the ignition switch is operated for ignition is two times, and when the ignition switch is pressed once during non-combustion, combustion is performed by one more switch operation. The combustion device according to claim 9, further comprising a notification unit that notifies the start of the operation. 11. A combustion device having one operation switch, one ignition switch, and any other number of switches, wherein after operating the operation switch, the other switch is operated. The combustion apparatus is characterized in that combustion is started by operating one of the switches and then operating the ignition switch. 12. A combustion device having a plurality of switches including one ignition switch, wherein combustion is started by simultaneously operating the ignition switch and any other number of switches. A combustion device characterized by having a configuration as described above.