JPH09280556A - Ignition control equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable execution of proper reignition even when an ignition error occurs, by enabling execution of reset for ignition and execution of reignition only by a specific resetting means in the case when the ignition fails consecutively to a certain extent. SOLUTION: In the case when no ignition is confirmed by an ignition detecting means 64 although an ignition control means 63 executes an igniting operation, an error count means 65 counts the number of times of failure. An ignition resetting means 66 enables execution of a reigniting operation by making reset for ignition. A specific resetting means 68 is provided separately from the ignition resetting means 66 and enables execution of the reigniting operation. Reset by the ignition resetting means 66 is allowed when a count value of the error count means 65 is within a prescribed number of times of count, while reset by the specific resetting means 68 is allowed, but the reset by the ignition resetting means 66 is not accepted, after the count is made in the prescribed number of times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition control device used in, for example, a combustion device, and more particularly to an ignition control device capable of performing appropriate re-ignition even in the case of an ignition error that fails in ignition.

[0002]

2. Description of the Related Art Conventionally, as a technique of this kind, there is one used for an ignition device of a water heater, for example, a means for resetting an ignition error when ignition fails at the time of ignition is provided by the reset means. Some have made it possible to perform the ignition operation again when the − is released.

[0003]

However, although there is such a conventional one, in the conventional one, if the reset is repeated many times, the fuel in the combustion chamber becomes a little excessive and the ignition is rather difficult, or the combustion chamber is difficult to ignite. There was a problem that a fuel pool was generated at the bottom of the fuel cell, soot was emitted at the time of ignition if the vehicle was ignited in such a state, and the ignition noise became a little noisy.

Therefore, the present invention has been made in view of these problems, and it is an object of the present invention to provide an ignition control device which enables appropriate re-ignition even during ignition error.

[0005]

In order to achieve the above object, the invention according to claim 1 is an ignition control device for igniting and burning fuel to detect ignition. And an ignition control means for stopping the ignition operation when the ignition is not confirmed by the ignition detection means despite performing the ignition operation, and the ignition control means performs the ignition operation. Nevertheless, when the ignition is not confirmed by the ignition detection means, an error counting means for counting the number of times, an ignition reset means for resetting the ignition error and enabling a re-ignition operation, Special reset means provided separately from the ignition reset means to enable re-ignition operation,
Resetting by the ignition resetting means is allowed until the count value by the error counting means reaches a predetermined number of times, and resetting by the special resetting means is allowed after counting the predetermined number of times so that the resetting by the ignition resetting means is not accepted. Is characterized by.

According to the first aspect of the present invention, when the ignition failures continue to some extent, the reset cannot be performed by the normal ignition resetting means, and the special resetting means provided separately from the ignition resetting means is provided. Ignition can be reset and re-ignited only by.

According to a second aspect of the present invention, in an ignition control device for igniting and burning fuel, an ignition detecting means for confirming whether or not ignition is performed, and an ignition operation is performed to perform ignition operation. Regardless, if the ignition is not confirmed by the ignition detection means, the ignition control means stops the ignition operation, and the ignition detection means confirms the ignition even though the ignition control means performs the ignition operation. If not, the error count means counts the number of times and resets the count value by detecting the continuation of the ignition state for a predetermined time by the ignition detection means, and the ignition error is reset by the operation switch. Re-ignition operation is possible by disconnecting the operation switch resetting means that enables re-ignition operation from the commercial power source. And a power outlet reset means,
Reset by the operation switch resetting means is allowed until the count value by the error counting means reaches a predetermined number, reset by the power outlet resetting means is allowed after counting by the predetermined number of times, and reset by the operation switch resetting means is not accepted. It is characterized by doing so.

According to the second aspect of the present invention, when the ignition fails, the ignition switch is reset to re-ignite by operating the operation switch, and the number of ignition errors is counted by the error counting means. . When the count value exceeds a predetermined number of times, it is impossible to reset and re-ignite by operating the operation switch, and the ignition error is reset by unplugging the power outlet to enable re-ignition. . Further, when ignition is performed and combustion continues for a certain period of time, the count value counted by the error counting means is reset and counting is performed again.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a hot water storage type water heater to which the ignition control device of the present invention is applied. FIG. 2 is an external view of the remote controller of the water heater. FIG. 3 is an explanatory diagram of the controller. FIG. 4 is a flow chart showing the operation of the ignition control device of the present invention.

First, the outline of the water heater will be described with reference to FIG. In FIG. 1, the water heater comprises a hot water storage can body 10,
The combustion chamber 20 disposed below the exhaust chamber 30, the exhaust mechanism 30 disposed above, and the burner 40 facing the inside of the combustion chamber 20.
And a controller 50 and a remote controller 60.

The inside of the hot water storage can body 10 is designed to store hot water, and a heat exchange coil 11 from the outside is passed inside to form a so-called semi-hot water storage can body. The heat exchange coil 11 is part of a bath reheating circuit or the like. Further, the hot water storage can body 10 has an inlet pipe 12 and an outlet pipe 13
Is connected so that water can be entered and tapped.

The hot water storage canister 10 is provided with a hot water storage temperature sensor 14 for detecting the temperature of the hot water stored therein. Further, a can body temperature sensor 15 is provided for detecting the temperature of the hot water storage can body 10 itself and stopping the operation when the hot water storage can body 10 is overheated.

The burner 40 is a spray nozzle 4 for petroleum or the like.
1, an igniter 42, a blower 43 and the like.

Based on a command from the remote controller 60, the controller section 50 receives information from each sensor such as the hot water storage temperature sensor 14 of the water heater and performs a predetermined control operation by a predetermined control software. Commands are given to the burner 40 and other parts of the apparatus.

Next, the remote controller 50 will be described with reference to FIG. The remote controller 50 has a display section 51 for displaying the operating state of the water heater and an operating section 52 such as an operation switch 53 which is a power on / off switch of the remote controller. Then, for example, hot water is supplied to the bathtub (not shown) according to the contents set by the hot water temperature adjustment switch and the water level setting switch, and when the switch is operated, the hot water in the bathtub is circulated to the heat exchange coil 11 to heat the water. I keep it warm.

Next, the controller 60 will be described. The controller 60 controls the entire water heater and transmits signals to and from the remote controller 50.
For example, it operates by connecting the power outlet 61 to a commercial power supply of AC100V. As shown in FIG. 3, the controller has a control unit 62 and a storage unit 80. The control unit 62 includes an ignition control means 63 and an ignition detection means 6.
4, error counting means 65, ignition resetting means 66,
A power supply line discriminating means 67, a special resetting means 68, and other control means 69 are provided. In addition, the storage unit 8
0 is provided with an error count storage means 81 and other storage means 82.

First, the ignition control means 63 on the side of the control unit 60 energizes the igniter 42 such as an igniter to control the ignition operation of combustion. When the hot water storage temperature sensor 14 detects a decrease in the temperature of the hot water of the hot water storage can 10,
Fuel is ejected in the form of mist from the spray nozzle 41 and ignited by an igniter 42 to perform a combustion operation.

The ignition detecting means 64 is means for detecting whether or not the ignition is surely performed and the combustion is started when the ignition control means 63 performs the ignition operation. A detection sensor 44 made of, for example, a phototransistor or Cds is provided at the facing position. If the ignition detection means 64 does not detect the ignition even though the ignition control means 63 performs the ignition operation, the ignition control means 63 detects the ignition error.

The error counting means 65 is means for adding and counting the number of times the ignition detecting means 64 detects an ignition error. In the case of this water heater, the ignition control means 63 can perform the re-ignition operation several times even if the ignition fails. The count number counted by the error count means 65 is stored in the error count storage means 81.

The ignition reset means 66 is means for resetting the ignition error so as to enable re-ignition when the ignition detection means detects the ignition error due to ignition failure. In this embodiment, the operation switch 53 also serves as the ignition reset means 66, and the operation switch 53 is pushed at the time of ignition error to temporarily turn off the power of the remote controller 50, and then the operation switch 53 is restarted. It is reset by turning on. At this time, the error counting means 65
Is counted, and the count number stored in the error count storage means 81 is not cleared but is cumulatively added as it is.

The power supply line discriminating means 67 is means for discriminating the power supply state of the controller 60, and also discriminates whether the power supply outlet 61 is connected to a commercial power supply of AC100V or the power supply outlet 61 is unplugged in the connected state. Is going.

The special reset means 68 is means for resetting and clearing the number of ignition errors stored in the error count storage means 81. The other control means 69 is means for performing control other than the above, monitors the detection values of the hot water storage temperature sensor 14 and the can body temperature sensor 15, and controls the ignition control means 63.
To issue an ignition command, monitor various sensors, control the operation of various operating parts, control data transmission, and so on.

The storage unit 80 is an error count storage means 8
1 and other storage means 82. The error count storage means 81 is means for storing the number of times that the error count means 65 has detected the ignition failure by the ignition detection means 64. The other storage means 82 temporarily stores detection values of various sensors, temporarily stores transmission data,
It stores other information. A program for performing a series of operations relating to the present invention is also stored in this storage means 80.

Next, the operation of the present invention will be described with reference to the flowchart of FIG. As shown in FIG. 4, the ignition control means 63 performs an ignition operation as necessary when the hot-water storage temperature of the hot-water storage can 10 has dropped (step S1).
Then, the ignition detecting means 64 confirms whether or not the ignition is actually performed corresponding to the ignition operation (step S
2). Further, in order to prevent erroneous detection due to a pseudo flame or the like when confirming the ignition and to perform the ignition detection more reliably, the ignition detection state is maintained for a predetermined time for A seconds, so that the ignition is finally performed. This is determined (step S3).

When ignition is detected by the ignition detecting means 64, the current ignition error count number stored in the error count storing means 81 is reset and cleared,
From the next time, start counting from the beginning again (step S
4), ending the ignition operation. This is because if the combustion state continues for a predetermined period of time, the fuel pool in the combustion chamber and the state of excessive fuel will disappear.

In step S2, if the ignition detecting means 64 cannot confirm the ignition despite performing the ignition operation, the ignition operation is temporarily stopped as an ignition error and a slight error occurs. As a safe operation, an error is notified and the system waits for an error reset (step S5). Then, the error count means 65 increments the error count value by +1.
The error count value is added and stored in the error count value storage means 81 (step S6), and it is determined whether or not the error count value is the n-th predetermined number of times (step S7).

If the error count value is less than the nth time,
Since the ignition error is a slight error, the ignition resetting means 66 can easily reset the error and perform the re-ignition operation (steps S8 and S9). The error notification is made once in order to notify the user of the ignition condition. The operation switch 53 is also used as the ignition reset means 66. Operation switch 53
The ignition error is reset by turning off the power source of the remote controller 50 to turn off the power of the remote controller 50, and the ignition switch can be turned on again to re-ignite.

If the error count value is the nth time (step S7), the user is informed that the ignition condition is not so good, and the fact that the combustion chamber is slightly over-fueled due to ignition failure is taken into consideration. The normal ignition resetting means 66 prevents the ignition resetting. In this case, the ignition error can be reset by the special resetting means 68 provided separately from the ignition resetting means 66, and the handling error is notified as an error of higher importance as a safe operation (step S
10).

This special reset means 68 is also used for the presence or absence of connection of the power outlet 61 to the commercial power source.
When the power outlet 61 is unplugged from the commercial power source (step S11), the ignition error can be reset and the re-ignition operation can be performed (step S9).

Even during re-ignition, the ignition operation of steps S1 to S11 is performed, and if the ignition can be performed, the operations of steps S1 to S4 are performed, and the count value of the error count storage means 81 is reset in step S4. Start counting from the beginning.

In the above embodiment, step S1
The ignition operation may be performed only once, or the continuous re-ignition operation may be automatically performed a predetermined number of times, for example, up to three times. In this case, the count in step S6 is counted once.

[0032]

As described above, according to the present invention, when the ignition failures continue to some extent, the normal ignition resetting means cannot reset the ignition, and it is provided separately from the ignition resetting means. Since the ignition can be reset and re-ignited only by the special reset means, the user can know that the ignition state is not good, and the user can be more surely warned.

Further, since the normal ignition resetting means also serves as the operation switch and the special resetting means uses the attachment / detachment of the power source outlet, a separate resetting switch is not required. In addition, as a special resetting means, the operation of unplugging the outlet of the power source is required, so that it takes time to reset, and the excessive state of the fuel in the combustion chamber can be eliminated to some extent, and more appropriate ignition can be achieved. is there.

Further, when the ignition is once performed and the combustion state continues to some extent, the fuel in the combustion chamber is surely burned. At this time, therefore, the count value of the error counting means is initialized so that the combustion chamber is initialized. There is an effect that can be counted according to the state of.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a water heater using an ignition control device of the present invention.

FIG. 2 is an explanatory diagram of a remote controller.

FIG. 3 is a block diagram for explaining the configuration of the present invention.

FIG. 4 is a flow chart for explaining the operation of the present invention.

[Explanation of symbols]

 20 combustion chamber 40 burner 41 spray nozzle 42 igniter 43 blower 50 remote controller 60 controller section 63 ignition control means 64 ignition detection means 65 error counting means 66 ignition resetting means 68 special resetting means 80 storage Part 81 Error count storage means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kimiaki Asano Noritsu Co., Ltd. 93 Edo-machi, Chuo-ku, Kobe-shi, Hyogo

Claims (2)

[Claims] 1. An ignition control device for igniting and burning fuel, comprising: ignition detecting means for confirming whether or not ignition is performed; and ignition detecting means for performing an ignition operation and performing an ignition operation. If ignition is not confirmed by the ignition control means, the ignition control means stops the ignition operation, and if the ignition detection means does not confirm the ignition even if the ignition control means performs the ignition operation, Error counting means for counting the number of times, ignition reset means for resetting the ignition error to enable re-ignition operation, special reset means provided separately from the ignition reset means for enabling re-ignition operation, The reset by the ignition reset means is permitted until the count value by the error counting means reaches a predetermined number of times, and the special reset is performed after counting by the predetermined number of times. The ignition control device is characterized in that the reset by the reset means is allowed and the reset by the ignition reset means is not accepted. 2. An ignition control device for igniting and burning fuel, said ignition detection means for confirming whether or not ignition is performed, and said ignition detection means despite performing an ignition operation and performing an ignition operation. If ignition is not confirmed by the ignition control means, the ignition control means stops the ignition operation, and if the ignition detection means does not confirm the ignition even if the ignition control means performs the ignition operation, Error counting means for counting the number of times and resetting the count value by detecting the continuation of the ignition state for a predetermined time by the ignition detecting means, and ignition error resetting by the operation switch to enable re-ignition operation Operation switch resetting means and a power outlet reset that enables re-ignition operation by disconnecting the power outlet from the commercial power source. Resetting means and the error count means allow the reset by the operation switch resetting means up to a predetermined number of times, and after the predetermined number of times the reset by the power outlet resetting means are allowed and the operation switch resetting means Ignition control device characterized by not accepting reset.