JPH0634131A - Safety device for indoor open type combustion equipment - Google Patents

Abstract

PURPOSE:To promote a positive ventilation in a safety device for an indoor open type combustion equipment. CONSTITUTION:This safety device is comprised of a combustion amount determining means 13 for determining a combustion amount in response to signals got from a temperature setting switch 7 and an indoor temperature sensor 5; a combustion controlling means 14 for controlling the combustion in response to an output from the combustion amount determining means 13; an automatic flame distinguishing timer means 11 for outputting a combustion stopping pre- informing signal and a combustion stopping signal for every predetermined time; an extention switch 8 for clearing a time counted time of the automatic flame distinguishing timer means 11 to its initial value and for continuing combustion; and a combustion increasing means 15 for forcedly increasing the combustion amount in response to the combustion stopping pre-informing signal of the automatic flame distinguishing timer means 1. Accordingly, as the combustion stopping pre-informing is carried out, the combustion amount is forcedly increased to cause a room temperature to be increased, an occupant may feel hot and may perform a ventilation through a physical feeling against the hot state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for indoor open combustion equipment.

[0002]

2. Description of the Related Art Generally, an indoor open-type combustion heating device such as an oil fan heater uses indoor air as combustion air and supplies hot combustion air into the room to heat it. Oxygen deficiency occurs, abnormal combustion such as red fire occurs, carbon monoxide is generated, and there is a situation where human life is harmed.

Therefore, in this type of combustion equipment,
A warning is issued every predetermined time, ventilation is encouraged, and combustion is stopped after the warning, and the same operation is repeated if an extension switch provided separately from the operation switch is pressed. To ensure sex.

FIG. 5 is a block diagram for explaining the configuration of such a conventional device. Reference numeral 1 is a main body of a combustion device such as an oil fan heater, 2 is the same operation unit, 3 is a control unit for controlling the drive of the combustion device, Reference numeral 4 is a load group for combustion, and 5 is a room temperature sensor including a thermistor for detecting the indoor temperature. 6 is an operation switch for instructing start and stop of combustion, 7 is a temperature setting switch for setting a desired temperature for the combustion equipment, 8
Is an extension switch, which clears the timing of an automatic fire extinguishing timer means (described later) that extinguishes the combustion within a certain time (for example, 3 hours), instructs restarting, and restarts the combustion only for a predetermined time counted by the automatic fire extinguishing timer means It is for continuing. When the operation switch 6 is turned on and a signal is input to the control unit 3, the load group is driven according to a preset sequence and combustion is started.

Next, the structure of the control unit 3 will be explained. Reference numeral 9 is an operation judging means for judging ON / OFF of the operation switch 6, and 10 is information on the room temperature sensor 5 and the temperature setting switch 7.
Combustion amount determining means for determining the combustion amount based on the information of 1
Reference numeral 1 denotes a driving start signal of the driving discrimination means 9 and an extension switch 8
The automatic fire-extinguishing timer means that starts the operation in response to the combustion continuation signal of, for example, 2 hours 45
When the minutes are timed, a combustion stop notice signal is output, and when the time is counted for 3 hours, a combustion stop signal is output. Reference numeral 12 is an automatic fire extinguishing warning means for notifying the user of a combustion stop advance notice and a combustion stop signal from the automatic fire extinguishing timer means 11, and 13 is information on the room temperature sensor 5 and the temperature setting switch 7.
Combustion amount determining means for determining the combustion amount by inputting information of
Reference numeral 14 is a combustion control means, which inputs the operation start and stop information from the operation determination means 9, the information on the combustion amount determined by the combustion amount determination means 12, and the combustion stop signal from the automatic fire extinguishing timer means 11, The load group 4 is controlled to control combustion.

Therefore, according to such a configuration, it is safe because an alarm is issued at predetermined time intervals to promote ventilation, and combustion is stopped unless the user operates the extension switch.

[0007]

However, in the above-mentioned conventional configuration, even if the user recognizes the warning by the lamp or the buzzer for notifying the combustion stop, in many cases, the extension switch 8 is only pushed to continue the combustion, and the ventilation itself. In many cases, it is not done. In particular, it is rare to actually perform ventilation because the room temperature decreases when ventilation is performed.

The present invention has been made in view of the above points, and an object thereof is to ensure reliable ventilation.

[0009]

In order to achieve the above object, the present invention provides an operation switch for instructing the start and stop of the operation of a combustion device, a temperature setting switch for setting a desired temperature for the combustion device, A room temperature sensor for detecting an indoor temperature, a combustion amount determining means for determining a combustion amount based on signals from the temperature setting switch and the room temperature sensor, and a combustion control means for controlling combustion by an output from the combustion amount determining means. , An automatic fire extinguishing timer means for outputting a combustion stop advance notice signal and a combustion stop signal at predetermined time intervals, an extension switch for clearing the time measured by the automatic fire extinguishing timer means to an initial value and continuing combustion, and the automatic fire extinguishing timer means Combustion increasing means for forcibly increasing the combustion amount based on the combustion stop notice signal is provided.

Further, the combustion increasing means includes a ventilation timer section for measuring a fixed time from a combustion advance signal, a room temperature change detecting section for detecting a temperature change range during the ventilation timer section measuring the fixed time, and the room temperature change. And a set temperature changing unit for raising the set temperature set by the temperature setting switch based on the output of the width.

[0011]

According to the present invention, the combustion amount is forcibly increased and the room temperature is raised after the notice of the combustion stop due to the above-mentioned configuration. Therefore, the user feels hot and tries to perceive the ventilation. That is, the ventilation is sensationally induced, and more reliable ventilation can be expected. Further, in the second invention example, even if ventilation is performed, the decrease in room temperature is reduced and the original set temperature is quickly restored.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the present invention will be described below with reference to the accompanying drawings. The same parts as those in the conventional example are designated by the same reference numerals, detailed description thereof will be omitted, and only different parts will be described.

In FIG. 1, reference numeral 15 is a combustion increasing means for forcibly increasing the combustion amount when a combustion stop notice signal from the automatic fire extinguishing timer means 11 is output. In this embodiment, the setting is made by the temperature setting switch 7. The temperature is increased by a predetermined temperature and sent to the combustion amount determining means 13, and the combustion amount determining means 13 increases the combustion amount based on this output.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. First, when the device is powered on and the control unit 3 is started, the device control is started according to the procedure of the control program shown in the flowchart of FIG.

First, at step 21, the driving discrimination means 9 judges whether or not the ON signal of the driving switch 6 is inputted. If the ON signal is inputted, the routine proceeds to step 22.
If the OFF signal is input, the process proceeds to step 32. Step 22 determines whether the extension switch 8 has been operated,
If it is operated, the process proceeds to step 23, the automatic fire extinguishing timer means 11 is cleared to the initial value, and the timer is stopped.
If it is not operated, the process directly proceeds to step 24.

In step 24, automatic fire extinguishing timer means 1
It is determined whether 1 is cleared to the initial value, and if so, the timer is started in step 25 and step 26
Proceed to. If the automatic fire extinguishing timer means 11 is not cleared to the initial value, it is determined that the timer is counting and the process directly proceeds to step 26.

In step 26, the automatic fire extinguishing timer means 1
The timing of 1 is the combustion stop notice time, for example, 2 in this embodiment.
It is determined whether or not 45 minutes have elapsed, and if it has elapsed, the process proceeds to step 27, and the automatic fire extinguishing alarm means 12 issues an alarm. If it has not elapsed, the process proceeds to step 31. In step 28, the combustion amount is set as the preset temperature (for example, 2 ° C.) raised by the combustion increasing means 15 by a preset temperature (for example, 2 ° C. when the preset temperature is 20 ° C.). An instruction is sent to the determination means 13. Therefore, the combustion amount determining means 13 increases the combustion amount by increasing the difference from the room temperature by the amount by which the set temperature is raised.

In step 29, it is determined whether or not the combustion stop time has elapsed since the automatic fire extinguishing timer means 11 started measuring the time. If yes, the process proceeds to step 30, and if not, the process proceeds to step 31. . In step 30, since the operation switch is turned off or the automatic fire extinguishing is due to the elapse of the combustion stop time, the signal from the combustion control means 14 to the load group 4 is turned off to stop the combustion. Further, in step 31, the combustion control means 14 drives the load group 4 in accordance with the combustion amount calculated by the combustion amount determining means 13 from the information of the room temperature sensor 5 and the information of the set temperature processed by the combustion increasing means 15. Control. Then, in step 32, the OFF state of the operation switch is confirmed, and since the combustion is stopped, the automatic fire extinguishing timer means 11 is cleared to the initial value and the timer is stopped.

As described above, according to this structure, the combustion amount is increased before the notice of the combustion stop, so that the room temperature becomes high, the decrease in the room temperature due to the ventilation is suppressed, and the ventilation is easy for the user. Further, in addition to the warning of the combustion stop notice, the user feels the room temperature to be hot, so that ventilation can be induced sensationally and reliable ventilation can be expected.

FIG. 3 shows an example of an invention in which the room temperature can be quickly returned to the original set temperature even if the room temperature is lowered by ventilation.

An example of the present invention will be described below with reference to FIG. 3. The same parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described. In FIG. 3, reference numeral 16 is a combustion increasing means for increasing the combustion amount when a combustion stop notice signal is output from the automatic fire extinguishing timer means 11, and is configured as described below. That is, 17 is a ventilation timer unit that starts at the time when the room temperature starts to decrease after the combustion stop notification signal is output from the automatic fire extinguishing timer means 11 and measures a certain time, and 18 is a room temperature change detection unit, which notifies the combustion stop. The room temperature at that time is stored, and the difference between the room temperature at this time and the room temperature at the time of receiving the output that the ventilation timer unit 17 has timed for a certain period of time is calculated and the temperature change width is temporarily stored.
Reference numeral 19 denotes a padding learning unit that learns the padding temperature of the set temperature, and when the temperature change width output from the room temperature change detection unit 18 is received and the temperature change width is set, how many times the padding of the set temperature should be padded is performed. Learn to make decisions. Two
Reference numeral 0 denotes a set temperature changing unit that raises only the temperature obtained from the padding learning unit 19 to an actual set temperature and sends the padding set temperature signal to the combustion amount determining means 13.

The operation of the above configuration will be described below with reference to the flow chart of FIG. 4. However, only the step 28 is different from the flow chart of FIG. 2, so the processing of step 28 is replaced with the subroutine of step 33 to step 44. The flow chart of only the subroutine is described, and the description of other parts is omitted.

In step 33, the automatic fire extinguishing timer 12 performs the processing from step 34 to step 36 only for the first time when the combustion stop notice time has elapsed, so it is judged whether it is the first time or not, and if it is the first time, the procedure goes to step 34. If it is the second time or later, the process proceeds to step 37.

In step 34, the room temperature information from the room temperature sensor 5 is input to the padding learning unit 19, and in step 35, the padding data of the set temperature is referenced from the database of the padding learning unit 19 based on the room temperature information and the padding is padded. The temperature is determined, and in step 36, the raising temperature is added to the current setting temperature to calculate the setting temperature, and the setting temperature information is sent to the combustion amount determining means 10.

At step 37, the room temperature change detection unit 18 confirms whether the room temperature has dropped. If the room temperature has dropped, the process proceeds to step 38. If the room temperature has not dropped, step 2
Proceed to 9. In step 38, it is determined whether or not the ventilation timer unit 17 is counting time. If it is, the process proceeds to step 41. If not, the process proceeds to step 39 to start measuring the ventilation time. In step 40, the room temperature change detection section 18 inputs the room temperature at the time when the ventilation timer section 17 starts the time measurement and the room temperature starts to decrease, and stores it as room temperature data 1.

In step 41, it is judged whether or not the time measured by the ventilation timer section 17 has exceeded a preset time. If it has elapsed, the process proceeds to step 42, and if it has not elapsed, the process proceeds to step 29. In step 42, the room temperature change detector 18 inputs the room temperature that has dropped after the ventilation timer 18 has measured a predetermined time, and stores it as room temperature data 2.

In step 43, the room temperature change detecting section 1 is similarly detected.
In step 8, the room temperature decrease gradient value is calculated from the room temperature data 2, room temperature data 1 and ventilation time, and in step 44 the room temperature decrease gradient value and the room temperature data 1 are stored in the database. After that, the processes from step 29 onward in FIG. 2 are performed, and the process proceeds to the next step.

Therefore, in this configuration, since the raising temperature of the set temperature is determined while learning, the combustion increase amount is automatically set according to the room to be used. Therefore, even if the user ventilates, it is possible to suppress a decrease in room temperature after ventilation, and it is possible to quickly return the temperature to a room temperature desired by the user after ventilation and stabilize it.

The above-mentioned respective embodiments are shown as examples of the present invention, and may have any constitution as long as the objects and effects of the present invention can be achieved. Although it has been explained that the set temperature is raised, this may be one that directly maximizes the combustion amount, and although a microcomputer is used as the control means, even if the microcomputer is not used, It may have a circuit configuration capable of similar control. Further, it is explained that the process of increasing the combustion is performed together with the alarm in the automatic fire extinguishing timer means, but this may be any timing before the stop of the combustion by the automatic fire extinguishing timer means,
Further, although the raising of the set temperature is explained by the learning process, any control means may be used as long as the same result can be obtained.

[0030]

As described above, according to the present invention, the combustion amount is forcibly increased and the room temperature becomes higher after the advance notice of the combustion stop. Therefore, the user feels hot,
You will try to feel ventilation. In other words, ventilation will be sensationally felt, and more reliable ventilation can be expected.

Further, in the combustion increasing means configured to raise the set temperature by learning or the like, even if the room temperature is lowered by ventilation, the room temperature can be quickly returned to the original set temperature, and after the ventilation, It is possible to suppress a decrease in room temperature.

[Brief description of drawings]

FIG. 1 is a block diagram showing a safety device for an indoor open combustion device in an example of the present invention.

FIG. 2 is a flowchart showing the operation of the safety device.

FIG. 3 is a block diagram showing a safety device for an indoor open combustion device according to another example of the present invention.

FIG. 4 is a flowchart showing the operation of the safety device.

FIG. 5 is a block diagram of a conventional safety device.

[Explanation of symbols]

 4 load group 5 room temperature sensor 6 operation switch 7 temperature setting switch 8 extension switch 11 automatic fire extinguishing timer means 13 combustion amount determining means 14 combustion control means 15 combustion increasing means 17 ventilation timer section 18 room temperature change detecting section 19 raising learning section 20 set temperature Change part

Claims (2)

[Claims] 1. An operation switch for instructing start and stop of operation of a combustion device, a temperature setting switch for setting a desired temperature for the combustion device, a room temperature sensor for detecting an indoor temperature, and the temperature setting switch. A combustion amount determining means for determining a combustion amount based on a signal from a room temperature sensor, a combustion control means for controlling combustion by an output from the combustion amount determining means, and a combustion stop notice signal and a combustion stop signal at predetermined time intervals. Automatic fire extinguishing timer means, extension switch for clearing the time measured by the automatic fire extinguishing timer means to the initial value and continuing combustion, and compulsorily increasing the combustion amount based on the combustion stop notice signal of the automatic fire extinguishing timer means A safety device for an indoor open-type combustion device, which comprises combustion increasing means. 2. An operation switch for instructing start and stop of operation of a combustion device, a temperature setting switch for setting a desired temperature for the combustion device, a room temperature sensor for detecting an indoor temperature, and the temperature setting switch. A combustion amount determining means for determining a combustion amount based on a signal from a room temperature sensor, a combustion control means for controlling combustion by an output from the combustion amount determining means, and a combustion stop notice signal and a combustion stop signal at predetermined time intervals. Automatic fire extinguishing timer means, extension switch for clearing the time measured by the automatic fire extinguishing timer means to the initial value and continuing combustion, and compulsorily increasing the combustion amount based on the combustion stop notice signal of the automatic fire extinguishing timer means And a ventilation timer section for measuring a fixed time from the combustion warning signal and a ventilation timer section for a fixed time. A room open type combustion device consisting of a room temperature change detection unit that detects the temperature change range during time measurement, and a set temperature change unit that raises the set temperature set by the temperature setting switch based on the output of the room temperature change range. Safety device.