JPH073151Y2 - Burner appliance timer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a timer device for stopping combustion after a predetermined time from the start of combustion.

<Prior art> In an open type stove that conventionally uses indoor air as combustion air, which has been called a fan heater, it becomes an oxygen deficiency state by continuing combustion for a long time and there is a risk of life. The duration was limited to a fixed time with a timer circuit, and the extension switch etc. was pushed again each time before the time was up, or if it was not pushed, combustion was automatically stopped to measure safety.

<Problems to be solved by the invention> By the way, in this conventional one, the timer time for continuing the combustion is limited to one, and when it is desired to continue the combustion for a slightly longer time, or conversely, it is desired to shorten the combustion continuation time. It is extremely inconvenient because it can not respond to the user's request, and furthermore, since it was equipped with a timer that simply set multiple time-up times, each timer switch had to be selected and pressed, However, there is a risk that it will be troublesome and that it will be set by mistake and fall into the above-mentioned dangerous state.

<Means for Solving Problems> This invention focuses on this point and solves the above-mentioned drawbacks. In particular, its configuration measures the time from the start of combustion and automatically stops combustion when a predetermined time arrives. In a device provided with a safety timer circuit, a predetermined time of the safety timer circuit is set in advance to a frequently used reference time, a first time shorter than the reference time, and a second time shorter than the first time. Further, a select switch 3 for selecting each of the set timer times is provided, and if the select switch 3 is not operated, the reference time is set and the reference time is reset by pressing only once. When the pressing interval when pressing twice is within a fixed time, the timer time is sequentially set to the first time and the second time each time the number of times of pressing increases, and the pressing when pressing plural times When the interval exceeds a certain time, the timer time is set to the reference time.

<Action> The safety timer circuit starts timing at the same time as combustion starts, and after a certain period of time that has elapsed from the start of this combustion, the time is up and the combustion is automatically stopped. By pressing the select switch 3 further, the above timer time can be changed to set the time according to the user's request, and by pressing the select switch 3 only once, The most frequently used standard time of 3 hours is set, and by pressing the select switch 3 again within 5 seconds, 1
It is set to the 1st hour of the time, and it is set to the 2nd hour of 30 minutes sequentially by pressing it again within 5 seconds, and various safety timer times can be selected according to the user's request. It is extremely convenient to use, and this selection is a simple one that operates only the select switch 3 and has good operability. Also, even if the select switch 3 is pressed once or after the second time over 5 seconds. Since it is automatically set to the reference time, the normally used reference time is prioritized and set easily, and its usability is improved.

<Embodiment> Next, a preferred embodiment of a timer device for a combustion appliance according to the present invention shown in the drawings will be described. 1 is control of combustion, storage of preset safety timer time,
It is a microcomputer (hereinafter referred to as a microcomputer) having a safety timer circuit and the like that measures the time from the start of combustion and outputs when the set time comes up and the combustion is stopped.

Reference numeral 2 denotes an open / close type operation switch provided on the input side of the microcomputer 1, which inputs a combustion start signal to the microcomputer 1 when closed. 3 is the operation switch 2
Similarly to the above, a select switch, which is provided on the input side of the microcomputer 1 and which is closed only when pressed,
If there is no pressing at the start of combustion, the microcomputer 1 sets the safety timer circuit at the most frequently used reference time, and if it is pressed only once, the safety timer circuit is set to the reference time, and from this one pressing. Within a certain time, by pressing once again within 5 seconds, here, during the first time, which is shorter than the reference time, and within 5 seconds, by pressing once again three times in total, a shorter first time. It is set to 2 hours each, on the other hand, if the second and subsequent pressing is performed after 5 seconds or more, all are set to the reference time, and the time is cleared and counted again. It also doubles as an extension switch for starting. In this embodiment, the reference time is "3 hours" and the first time is "1".
The time is set to "30 minutes" and the second time is set to "30 minutes" in advance. 4 is a safety timer display unit provided on the output side of the microcomputer 1, and the light emitting elements 5, 6 and 7 corresponding to 3 hours to 30 minutes respectively according to the set time by the select switch 3 are all set until each set time, That is, if the reference time is 3 hours, the light emitting elements 5, 6, ...
7 all emit light, and only the light emitting elements 6 and 7 emit light during the first time, and only the light emitting element 7 emits light during the second time to indicate the time set by the user. At the same time, the light emission of the light emitting element is sequentially stopped to display the remaining time, and the light emitting element 7 for 30 minutes blinks 5 minutes before the time is up to display before the time up, and The extinguishing by the safety timer is displayed by turning off all the light emitting elements 5/6/7.

An output circuit 8 receives a time-out output of a safety timer from the microcomputer 1 and outputs a combustion stop signal to the combustion control circuit 9 to stop combustion.

Next, the operation of this embodiment will be described.

Combustion is started by closing the operation switch 2 now, but if the select switch 3 is not operated at this time,
The safety timer time is automatically set to the reference time of 3 hours, and the display unit 4 displays this and the time measurement is started.

After 3 hours have elapsed from the start of combustion, the microcomputer 1 outputs and sends a signal to the combustion control circuit 9 via the output circuit 8 to stop combustion. Of course, the selector switch 3 should be pressed before this stop. For example, the safety timer circuit is cleared, the timing is restarted from "0", and the combustion is extended for another 3 hours, and the display of the safety timer display section 4 changes depending on the elapsed time of the safety timer and remains. The time is displayed, and 5 minutes before the stop, the fact that the car will stop is displayed to inform the user.

To further change the safety timer time, press the select switch 3 once and then press it again within 5 seconds to set the timer time from the reference time to 1 hour, which is the first hour. Is limited to 1 hour at the maximum, and combustion is stopped 1 hour after the time is set. Further, the select switch 3 is further turned on within 5 seconds from the above state.
By pressing the meter three times in a row, the second timer
It is set to 30 minutes of time, the microcomputer 1 measures the time from this setting time, and stops the combustion after 30 minutes. The safety timer time can be freely set by operating only the select switch 3 according to the user's request. Can be changed to, which is extremely convenient.

On the other hand, press the select switch 3 from the second time onwards
After the lapse of seconds, the safety timer time will be set to 3 hours of the reference time regardless of what time it is set, and it is easy to reset to the frequently used reference time, which is extremely convenient. Further, the extension of the first and second times can be easily performed by continuously pressing the select switch 3 twice or three times as in the case of setting each time.

In this embodiment, the reference time is set to 3 hours and the first and second times are set to shorter times, but the reference time may be set to 1 hour and the first and second times may be set to longer times. It suffices to set a frequently used time as the reference time.

<Effect of device> In short, this device has a safety timer circuit that measures the time from the start of combustion and automatically stops the combustion when a predetermined time arrives. A reference switch having a high frequency of use, a first time shorter than the reference time and a second time shorter than the first time are set in advance, and a select switch 3 for selecting each of the set timer times is provided. If the switch 3 is not operated, the reference time is set, the reference time is reset by pressing only once, and the pressing interval at the time of pressing a plurality of times is sequentially increased every time the pressing number is increased within a fixed time. When the timer time set to the 1st time and the 2nd time shifts and the pressing interval when pressing a plurality of times exceeds a certain time, the timer time is set to the reference time. It is very convenient because the safety timer time can be freely changed according to the user's situation or demand, and each timer time can be easily set by operating only one select switch. Rich and easy to do.

Also, if the operation from the select switch to the next operation is performed after a certain time has elapsed, the reference time having a high frequency of use is always prioritized and set, so that its usability is extremely good.

[Brief description of drawings]

FIG. 1 is a block diagram showing a timer device of a combustion appliance to which an embodiment of the present invention is applied, and FIG. 2 is a flow chart concerning processing of the timer device. 1 ... Microcomputer, 2 ... Run switch,
3 ... Select switch, 4 ... Safety timer display,
8 ... Output circuit, 9 ... Combustion control circuit.

Continuation of front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location H03M 11/12 (72) Inventor Tsutomu Muramatsu 7-7 Higashishinpo, Sanjo City, Niigata Pref. Examiner at Uchida Works Co., Ltd. Maeda Hitoshi

Claims (1)

[Scope of utility model registration request] 1. A safety timer circuit for counting the time from the start of combustion and automatically stopping the combustion when a predetermined time comes, wherein the predetermined time of the safety timer circuit is frequently used in advance. A reference switch, a first time shorter than the reference time, and a second time shorter than the first time are set, and a select switch 3 for selecting each of the set timer times is provided, and the select switch 3 is operated. If not, it is set to the reference time and this reference time is reset by pressing only once, and when the pressing interval when pressing a plurality of times is within a fixed time, the first time and the The timer time is set to 2 hours, and when the pressing interval when pressing a plurality of times exceeds a certain time, the timer time is set to the reference time. Timer device of the baked instrument.