JP2002022166A - Co detection microcomputer control type oil burning heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further reliably prevent the occurrence of an oxygen deficiency accident by regulating restarting of operation after extinguishing during automatic extinguishment of an oil burning heater through detecting operation of a CO detecting device. SOLUTION: A battery is provided to serve as a power source for the CO detecting device, a room temperature detective device, and a microcomputer device. A set switch 6 to detect the setting state of an earthquake extinguish switch and a solenoid 5 acting on the earthquake extinguish switch are annexed to the earthquake extinguish switch 3. A microcomputer control device functions a CO alarm generating means 10A, a temperature alarm generating means 10B, and a solenoid-drive signal output means 10C to generate a solenoid drive output signal in a pulse-like manner. Further, when the entire microcomputer control device is in a normal operation state, an ignition control means 10E to control an ignition mechanism is made to function so as to enable ignition of an ignition mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil stove provided with a CO detection and extinguishing device.

[0002]

2. Description of the Related Art As a safety measure against an oxygen deficiency accident caused by incomplete combustion in the operation of an oil stove, a CO detection device is added to an anti-seismic fire extinguishing device, and the oxygen deficiency state in the room is detected by the CO detection device at a certain value or more. Activate the anti-seismic fire extinguishing system by detecting the CO concentration (oxygen monoxide concentration)
It is known to extinguish the burning of oil stoves.

[0003]

2. Description of the Related Art Known oil stoves with a CO detection and fire extinguishing system do not automatically extinguish an oil stove by detecting an increase in the CO concentration (oxygen monoxide concentration) in a room, that is, a danger state of oxygen deficiency. is there. However, there is no means to regulate the restart (reburn) of the oil stove. That is, when restarting (reburning) the operation of the oil stove, there is no means for confirming that the concentration of oxygen in the room has been reduced to a sufficient safety line by ventilation or the like and restarting (reburning).

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention
The microcomputer controls the combustion of the oil stove to the set condition range of CO and room temperature, and when the oil stove is automatically extinguished by the detection operation of the CO detection device, restricts the restart of operation after the fire is extinguished, thereby preventing the lack of oxygen by the oil stove. The task is to ensure the reliability. A second object of the present invention is to enable the operation of an oil stove only when the microcomputer control for the automatic detection and extinguishing of CO detection is in a normal state.

[0005]

The first invention of the present application provides a CO detection device, a room temperature detection device, a microcomputer control device, a battery for a power supply of the microcomputer control device, and detects a set state of the anti-seismic fire extinguishing device. A set switch to be activated and a solenoid acting on the anti-seismic fire extinguishing system are attached to the anti-seismic fire extinguishing system.
CO alarm generating means for generating an alarm, temperature alarm generating means for generating a temperature alarm at a temperature equal to or higher than the detection alarm temperature of the room temperature detecting device and canceling the temperature alarm at a temperature lower than the detection alarm canceling temperature
It has a function as a solenoid drive signal output means that continuously generates a solenoid drive output signal in a pulsed manner when any of an alarm and a temperature alarm is present.
In the state where the O alarm is generated or the temperature alarm is generated and the temperature alarm is released below the detection alarm release temperature, the solenoid drive state is maintained by continuing the solenoid drive output signal, and the wick of the wick unit is set to the fire extinguishing position. It is characterized by maintaining. The second invention of the present application provides a CO detection device, a room temperature detection device, a microcomputer control device, and a battery as a power supply of the microcomputer control device.
In order to enable ignition of the ignition mechanism when all of the O detection device, the room temperature detection device, and the microcomputer control device are operating normally, the microcomputer has a function as ignition control means for controlling the ignition mechanism. The ignition is enabled only when the operation of the CO detection device and the room temperature detection is in a normal state.

[0006]

According to the first invention, the set switch is set to the set state by setting the anti-seismic fire extinguishing device to the set state. When the set switch is set, the CO detection device, the room temperature detection device, and the microcomputer control device are activated, and the oil stove is operable (ignition is performed by the ignition operation of the ignition mechanism to be in an operation state). The room temperature detection device is set to the detection operation state. The CO detection device generates a CO alarm when the CO concentration is equal to or higher than a set CO concentration (for example, 100 PM). A temperature alarm is generated when the detected temperature of the room temperature detecting device is equal to or higher than the detection alarm temperature, and a temperature alarm is generated until the temperature alarm is released when the detected temperature of the room temperature detecting device is equal to or lower than the detection alarm canceling temperature. When any one of the CO alarm and the temperature alarm is present, the drive output signal is continuously generated in a pulsed manner. The solenoid drive state is maintained by the continuation of the solenoid drive output signal, and the wick of the wick unit is maintained at the fire extinguishing position. A condition where both the CO alarm and the temperature alarm are not present (ie, CO
(No concentration abnormality and no room temperature abnormality), the generation of the solenoid drive output signal stops. When the generation of the solenoid drive output signal is stopped, the anti-seismic fire extinguishing device is set to the set state, so that the anti-seismic fire extinguishing device is in a standby state. That is, the set switch enters the set state. When the set switch is set, the CO detection device, the room temperature detection device, and the microcomputer control device are operated, and the oil stove is set in a re-operable state (ignition by the ignition operation of the ignition mechanism is re-operable). In the second invention, the function of the microcomputer control device as the ignition control means enables the ignition mechanism of the oil stove to be ignited only when the operation of the CO detection device and the room temperature detection of the microcomputer control device is in a normal state (the operation start is started). Possible).

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Referring to FIG. 2 to FIG. 4, light core unit 1, burner tank unit 2, anti-seismic fire extinguisher 3, combustion cylinder 4, and the like are the same as a general oil stove. In FIG. 1, reference numeral 17 denotes an ignition button, and reference numeral 18 denotes an emergency fire extinguishing button.
The wick unit 1 is configured such that an end of an operation shaft 22 of an up-and-down mechanism 21 of a cylindrical wick 1 a protrudes from a front plate 24,
The effective length of the light core 1a is freely changeable by rotating the light core adjustment knob 23 from the front of the front plate 24 while fixing the light core adjustment knob 23 to the front side.

Referring to FIGS. 5 to 7, the anti-seismic fire extinguishing device 3 includes a ratchet 36 provided on the vertical mechanism 21 of the light core unit 1 and a ratchet claw 37 which can be freely engaged with the ratchet 36. Including a ratchet mechanism and a weight 31 that tilts during seismic sensing, the weight 31 tilts to unlock the ratchet pawl 37 with the ratchet 36 and unlock the ratchet mechanism. Thus, the ratchet 36 is rotated to rapidly lower the light core 1a of the light core unit 1 to the fire extinguishing position (standby position) [the light core 1a is positioned in the light core cover 16] to extinguish the fire. In implementing the present invention, a set switch 6 for detecting a set state of the anti-seismic fire extinguishing device and a solenoid 5 acting on the anti-seismic fire extinguishing device are attached to the anti-seismic fire extinguishing device 3 described above.

In the embodiment shown in FIGS. 4 to 7,
The anti-seismic fire extinguisher 3 has a through hole 33a in the top plate 33 of the anti-seismic frame 32 and a through hole 35a in the swinging plate 35 which is pivotally supported on the support shaft 34 of the anti-seismic frame 32 and is rotatable. Weight 31
, The weight 31 can be supported vertically in the horizontal state of the swinging plate 35. Rocking plate 35
The ratchet pawl 37 is pivotally supported by a shaft 38, and the ratchet pawl 37 is rotatable around the shaft 38, and is free to rotate to the imaginary line position. . The tilting of the weight 31 at the time of seismic detection causes the bottom plate 39 of the weight 31 to tilt, thereby rotating the rocking plate 35 to the imaginary line position, and the protrusion 37 of the ratchet claw 37.
By pushing up a, the ratchet pawl 37 is rotated,
The ratchet pawl 37 is separated from the ratchet 36 to release the engagement with the ratchet 36.

The swing lever 35 is moved by the set lever 8.
Is set in a horizontal state, and the weight 31 is set in an upright state, so that the anti-seismic fire extinguisher 3 is set (shown by a solid line in FIG. 8).
Can be set freely. The set switch 6 is used to detect the set state (shown by a solid line in FIG. 8) of the anti-seismic fire extinguishing device 3 and the operation state of the anti-seismic fire extinguishing device 3 (shown by a virtual line in FIG. 8). Is attached to the anti-seismic frame 32 by contacting the end of the rocking plate 35. The solenoid 5 has the end of the movable piece 5a opposed to the lower surface of the end of the swing plate 35,
When the solenoid 5 is not operated, the tip of the movable piece 5a contacts the horizontal swinging plate 35 or is located below with a slight interval. When the solenoid 5 is actuated, the horizontal swing plate 35 is tilted in the imaginary line, the weight 31 is tilted to put the anti-seismic fire extinguisher 3 into the anti-seismic operation state, and the ratchet pawl 3
7 is separated from the ratchet 36, and the wick 1 of the wick unit 1 is
This is a structure in which a is rapidly lowered to a fire extinguishing position (standby position).

Referring to FIG. 4, control board 11 of control device 10 is mounted on the side of frame 19, and battery case 7 (containing two 1.5V batteries) is mounted on the back of frame 19. Referring to FIG. 8, the control board 11 of the control device 10 includes a microcomputer 12, a CO gas sensor 13, a temperature sensor (thermistor for temperature detection) 14, and an alarm indicator (L).
ED display) 15, power supply terminal T for driving microcomputer
1. A control device that is equipped with a set switch input terminal T2, a solenoid drive output terminal T3, and a resistance element, a capacitance element, a diode, a transistor, etc. (not shown), and programs the microcomputer to function as the means shown in FIG. 10 operates in the operation sequence of FIG. That is, the microcomputer control device 10 is a CO alarm generating unit 10A that generates a CO alarm when the CO concentration is equal to or higher than the set CO concentration.
And a temperature alarm generating means 10B for generating a temperature alarm at a temperature equal to or higher than the detection alarm temperature TA of the room temperature detection device and canceling the temperature alarm at a temperature equal to or lower than the detection alarm cancellation temperature TB, and the presence of any one of a CO alarm and a temperature alarm In some cases, the function of the solenoid drive signal output means 10C, which continuously generates the solenoid output signal in a pulsed manner, is achieved by the microcomputer program of the microcomputer 12. In the embodiment of FIG. 9, a battery voltage monitoring terminal T4 is added, and a battery voltage alarm generating means 10D is added to the function of the microcomputer 12 of the control device 10.

Further, in implementing the second invention of the present application,
In addition to the functions of the microcomputer 12 of the control device 10, an ignition control means 10E for controlling the ignition mechanism is added to enable ignition of the ignition mechanism when the microcomputer control device is in a normal operation state, and the control board 11 is ignited. A control terminal T5 is added, and the opening and closing of the switch S2 in the circuit of the battery and the filament or heater for ignition of the ignition mechanism 9 is controlled by an ignition signal from the ignition control terminal T5. If the switch S2 is an ignition switch S3, automatic ignition can be performed by an ignition signal from an ignition control terminal T5. By connecting the switch S2 in series with the ignition switch S3, an ignition signal from the ignition control terminal T5 is generated. Then, the ignition is enabled, and the ignition is performed by operating the ignition switch S3.

The operation of the present invention will be described with reference to the operation sequence shown in FIG. The battery abnormality alarm generating means 10D includes:
Generates a battery error alarm when the battery voltage is 2.0V or less. C
The O alarm generation means 10A generates a CO alarm when the detection data of the CO gas sensor 13 is equal to or higher than the CO concentration of 100 PPM. The temperature alarm generating means 10B generates a temperature alarm when the temperature is equal to or higher than the detected temperature TA of the room temperature detecting device 14, and cancels the temperature alarm when the temperature is equal to or lower than the detected temperature TB. When any of a CO alarm, a temperature alarm, and a battery abnormality alarm is present, the solenoid drive signal output unit 10C generates a solenoid output signal in a pulsed manner until a set switch input L (detects a non-set state). to continue.

When the anti-seismic fire extinguisher 3 is set, the set switch input H is set. There is no solenoid output signal, that is, the solenoid 5 does not operate. An ignition signal is output from the ignition control terminal T5, --- Ignition --- Start of operation of the oil stove --- A solenoid output signal is generated by generating a CO alarm when the CO concentration is 100 PPM or more, --- Solenoid 5 operates --- -Fire extinguishing by the anti-seismic fire extinguishing device 3--If the CO concentration is 100PPM or more, the solenoid output signal continues due to the continuation of the CO alarm--Continued operation of the solenoid 5----Setting of the anti-seismic fire extinguishing device 3- ---The fire-extinguishing fire-extinguishing system 3 continues the fire-extinguishing operation-There is no ignition signal from the ignition control terminal T5--No ignition. − −− Oil stove operation cannot be restarted. −− CO alarm is canceled when CO concentration is 100 PPM or less, solenoid output signal is stopped, solenoid 5 is stopped, and anti-seismic fire extinguishing system 3 can be set. −− When the earthquake extinguishing device 3 is set to the set state, the set switch input becomes H. There is no solenoid output signal, that is, the solenoid 5 does not operate. An ignition signal is output from the ignition control terminal T5, --- ignition --- restarting operation of the oil stove --- a temperature alarm is generated at a temperature equal to or higher than the detected temperature TA of the room temperature detector 14, and a solenoid output signal is generated; 5 operates --- --- The anti-seismic fire extinguishing device 3 operates and extinguishes --- The temperature alarm is not released at the detected temperature TB or higher, and the solenoid alarm output signal continues due to the continuation of the temperature alarm. --- The operation of the solenoid 5 Continuation --- Setting of anti-seismic fire extinguisher 3 is impossible --- --- Anti-seismic fire extinguisher 3 continues fire extinguishing operation-There is no ignition signal from ignition control terminal T5 --- No ignition. − −− Oil stove operation cannot be restarted −− The temperature alarm is canceled below the detected temperature TB, the solenoid output signal stops, −− solenoid 5 stops −− −−, anti-seismic fire extinguishing device 3 can be set −− When the anti-seismic fire extinguisher 3 is set to the set state, the set switch input becomes H. There is no solenoid output signal, that is, the solenoid 5 does not operate. The ignition signal is output from the ignition control terminal T5, --- Ignition --- Resumption of operation of the oil stove --- When the battery abnormality alarm is generated at a battery voltage of 2.0 V or less, a solenoid output signal is generated. Operation--------------------------------------------------------------------------------------------------------------------- Solenoid output signal is output --- --- The anti-seismic fire extinguisher 3 continues the fire-extinguishing operation-There is no ignition signal from the ignition control terminal T5 --- No ignition occurs. −− −−Operation of the oil stove is not restarted .−−−

When a CO alarm, a temperature alarm, and a battery abnormality alarm are generated, an alarm indicator 15 is lit.
In the embodiment, the temperature sensor disconnection detecting device 19 for detecting disconnection of the temperature sensor 14 and the CO sensor 1
3 The CO sensor disconnection detection device 20 that detects disconnection is provided, and the microcomputer is controlled to generate a disconnection alarm of the temperature sensor 14 and the CO sensor. Therefore, the alarm indicator light 15 is turned on even when the CO sensor and the temperature sensor 14 are defective. At the same time, the anti-seismic fire extinguisher 3 operates in the same manner as when the CO alarm, the temperature alarm, and the battery abnormality alarm are generated. Also, the second
In practicing the invention, the object can also be achieved by determining that the operation of the CO detection microcomputer control is not in a normal state due to the presence of the battery abnormality alarm and the disconnection alarm, and preventing the ignition mechanism of the oil stove from being ignited.

[0016]

According to the first invention of the present application, by setting the anti-seismic fire extinguishing device to the set state, the microcomputer control device is operated, the oil stove is operable, and
Automatically extinguishes by operating the anti-seismic fire extinguishing device by microcomputer control when the CO concentration is higher than O detection or room temperature detection and above the detection alarm temperature. By disabling the setting of the device, the resumption of operation after the fire is extinguished is regulated, so that it is possible to more reliably take measures against an oxygen deficiency accident by an oil stove. According to the second invention, the microcomputer control allows the ignition mechanism of the oil stove to be ignited only when the operation of the CO detection device and the room temperature detection of the microcomputer control device is in a normal state. By ensuring the operation, it is possible to more reliably take measures against an oxygen deficiency accident caused by an oil stove.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention including a description of a microcomputer control function of a microcomputer control device.

FIG. 2 is a perspective view of a CO detection microcomputer controlled oil stove embodying the present invention.

FIG. 3 is a front view of the main part.

FIG. 4 is a plan view of a main part of the same.

FIG. 5 is a front view of the anti-seismic fire extinguisher.

FIG. 6 is a plan view of the same.

FIG. 7 is a side view of the same.

FIG. 8 is an explanatory diagram of the operation of the anti-seismic fire extinguisher.

FIG. 9 is a plan view of a control board.

FIG. 10 is an operation sequence of the CO detection microcomputer control according to the present invention.

FIG. 11 is a block diagram showing an embodiment of the second invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light core unit 3 Anti-seismic fire extinguisher 5 Solenoid 6 Set switch 7 Battery case 8 Set lever 9 Ignition mechanism 10 Control device 10A CO alarm generation means 10B Temperature alarm generation means 10C Solenoid drive signal output means 10D Battery voltage alarm generation means 10E Ignition control Means 11 Control board 12 Microcomputer 13 CO gas sensor 14 Temperature sensor (Thermistor for temperature detection) 15 Alarm indicator light (LED display) 35 Rocking plate

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K003 EA00 FA01 FA05 FB10 FC10 GA04 HA03 TB04 TB09 VB06 VC04 3K068 NA01 PA04

Claims (3)

[Claims] An oil stove including a light core unit and an anti-seismic fire extinguishing device is provided with a CO detection device, a room temperature detecting device, a microcomputer control device, a battery for a power supply of the microcomputer control device, and a set of the anti-seismic fire extinguishing device. A set switch for detecting the condition and a solenoid acting on the anti-seismic fire extinguishing device are attached to the anti-seismic fire extinguishing device, and the microcomputer control device has a CO alarm generating means for generating a CO alarm when the set CO concentration is equal to or higher, Generates a temperature alarm when the temperature exceeds the detection alarm temperature of the detection device.
A temperature alarm generating means for canceling the temperature alarm when the temperature is equal to or lower than the detection alarm canceling temperature; and a solenoid driving signal output means for continuously generating a solenoid output signal in a pulsed manner when any of a CO alarm and a temperature alarm exists. When the temperature exceeds the set CO concentration or the temperature above the detection alarm temperature of the room temperature detection device and then becomes lower than the detection alarm release temperature after the temperature alarm is generated, the solenoid drive state is maintained, and the An oil stove with a CO detection device, wherein the wick is maintained at a fire extinguishing position. 2. A petroleum stove including a light core unit and an anti-seismic fire extinguishing device, comprising a CO detection device, a room temperature detection device, a microcomputer control device, and a battery as a power supply for the microcomputer control device. It has a function of ignition control means for controlling the ignition mechanism so that the ignition mechanism can be ignited when all of the detection device, the room temperature detection device, and the microcomputer control device are in a normal operation state. CO detection by the microcomputer control device An oil stove with a CO detection device, wherein the operation of the oil stove is regulated by igniting an ignition mechanism after confirming that the function of detecting the room temperature is normal. 3. The ignition control means of the microcomputer control device according to claim 2, wherein, in addition to the regulation of the ignition of the ignition mechanism at the start of operation of the oil stove, the ignition of the ignition mechanism is not activated when a CO alarm or a temperature alarm is generated. As much as possible, it has a function as an ignition control means for controlling the ignition mechanism.In addition to controlling the start of operation of the oil stove by microcomputer control, when the temperature exceeds the set CO concentration or the detection alarm temperature of the room temperature detection device 3. The CO detection according to claim 2, wherein restart of the operation of the oil stove is restricted by disabling ignition of the ignition mechanism in a state until the temperature becomes equal to or lower than the detection alarm release temperature after the occurrence of the temperature alarm. Oil stove with equipment.