CN102954502A

CN102954502A - A gas stove flameout alarm and automatic ignition device

Info

Publication number: CN102954502A
Application number: CN2012105000422A
Authority: CN
Inventors: 翟晨曦; 杨琬婷; 屈生双
Original assignee: Zhongshan City Chuangke Scientific Research Technology Service Co ltd
Current assignee: Zhongshan City Chuangke Scientific Research Technology Service Co ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-03-06

Abstract

The present invention proposes a gas stove flameout alarm and automatic ignition device, comprising a DC power supply, a device switch, a sensor circuit and an ignition circuit, characterized in that: it also includes an alarm circuit, the alarm circuit is provided with a first audio output terminal, a second audio output terminal and a trigger terminal, the first and second audio output terminals are electrically connected to a speaker, and the alarm circuit triggers the audio output of the first and second audio output terminals according to the high level or low level signal received by the trigger terminal; the sensor circuit is provided with a signal output terminal, which is electrically connected to the trigger terminal of the alarm circuit; the ignition circuit is provided with positive and negative input terminals and positive and negative output terminals, the positive and negative input terminals are electrically connected to the first and second audio output terminals of the alarm circuit, and the positive and negative output terminals are respectively connected to discharge needles. In addition to being able to accurately judge the ignition state of the gas stove and ignite it in time, the present invention can also send out an alarm signal or an alarm sound to remind the user.

Description

A kind of gas range is flame-out reports to the police and automatic ignition device

Technical field

The present invention relates to the flame-out warning of a kind of gas range and automatic ignition device

Background technology

Existing gas range generally can be with automatic ignition device, and it comprises light sensor spare and the corresponding electronic igniting circuit that connects, and utilizes light-sensitive device to judge whether flame extinguishes, and then starts ignition and carries out automatic ignition if extinguish.Said apparatus has solved the problem that gas range refires after the fray-out of flame when unmanned, the part but this scheme still has the deficiency: one, light-sensitive device are subject to external light influence and misjudgment can't in time start electronics point device; Its two, fail to send alarm signal or chimes of doom reminding user during fray-out of flame, situation about particularly failing in the ignition relight will affect user's the behavior of cooking.

Summary of the invention

In view of this, the present invention proposes that a kind of gas range is flame-out reports to the police and automatic ignition device, except the burning-point state that whether is in that can accurately judge coal gas and in time lighting a fire, also will send alarm signal simultaneously or the chimes of doom reminding user is in time processed.Its technical scheme is as follows:

A kind of gas range is flame-out reports to the police and automatic ignition device, comprise dc source, device switch, sensing circuit and firing circuit, it is characterized in that: also comprise a warning circuit, described warning circuit is provided with the first audio output, the second audio output and trigger end, described first, second audio output is electrically connected with loudspeaker, the audio frequency output that the high level that described warning circuit receives according to its trigger end or low level signal trigger first, second audio output; Described sensing circuit is provided with a signal output part, is electrically connected with the trigger end of warning circuit; Described firing circuit be provided with positive and negative input and positive and negative output, described positive and negative input is electrically connected with first, second audio output of described warning circuit respectively, described positive and negative output is connected to respectively spray point.

In the such scheme, whether be in a little by sensing circuit to gas range that right state detects, flame-out when detecting gas range, namely the trigger alarm circuit is reported to the police; Simultaneously, the audio signal of warning circuit is used as the power supply input of follow-up firing circuit, is discharged the some coal gas after boosting by spray point.

The air valve interlock of described device switch and gas range when opening air valve timer switch closure, makes dc source and continuous circuit communication; Disconnect when closing gas check valve timer switch.

Further, described firing circuit comprises first order transformer T1, second level transformer T2, capacitor C 1, C2, C3 and C4, commutation diode D1, D2 and D3, and diac D4; 1,2 ends of the primary coil of described first order transformer T1 are the positive and negative input of firing circuit, and 3,4 ends of the secondary coil of second level transformer T2 are the positive and negative output of firing circuit; Secondary coil 3 ends of described first order transformer T1 link to each other with subsequent conditioning circuit through capacitor C 1, and 4 ends are connected with primary coil 2 ends of second level transformer T2; The anode of described commutation diode D1 is connected with 4 ends of first order transformer T1 secondary coil, and negative electrode is connected with capacitor C 1 one ends; The anode of described commutation diode D2 is connected with the cathodic electricity of commutation diode D1, and negative electrode is connected through 4 ends of capacitor C 2 with first order transformer T1 secondary coil; The anode of described commutation diode D3 is connected with commutation diode D2 cathodic electricity, and negative electrode is through capacitor C 3 and commutation diode D2 anodic bonding; Described capacitor C 4 one ends are connected with commutation diode D3 cathodic electricity, and the other end is electrically connected with secondary coil 4 ends of first order transformer; Described diac D4 anode is connected with second level transformer T2 primary coil 1 end, and negative electrode is connected with commutation diode D3 cathodic electricity.

Further, described sensing circuit comprises a ultraviolet transducing module, triode Q1 and line resistance R1 and R2; Described triode Q1 is the positive-negative-positive triode, and its base stage via line resistance R 1 is connected to dc power anode, and colelctor electrode via line resistance R 2 is connected to dc power anode, and emitter stage is connected to dc power cathode; Described ultraviolet transducing module is provided with an output that is electrically connected with the base stage of triode Q1.

As the improvement of such scheme, described spray point adopts the stainless steel strip of diameter 2mm, and the distance between two spray points is about 4 to 6mm.

Than the prior art scheme, advantage of the present invention exists: 1, the ultraviolet transducing module is higher than general photo resistance accuracy, can not be subjected to the impact of extraneous light or stove and accessory self thermal infrared and misjudgment; 2, can send alarm signal or chimes of doom reminding user during fray-out of flame, situation about particularly failing in the ignition relight effectively prevents the leakage of coal gas; 3, warning circuit as the signal source of alarm signal source and firing circuit, kills two birds with one stone, so that circuit structure is more succinct, practical simultaneously.

Description of drawings

Fig. 1 is functional block diagram of the present invention.

Fig. 2 is circuit structure diagram of the present invention.

The specific embodiment

By reference to the accompanying drawings following, embodiments of the present invention are described below:

As shown in Figure 1, a kind of gas range is flame-out reports to the police and automatic ignition device, comprises dc source 1, device switch 2, sensing circuit 3, warning circuit 4 and firing circuit 5.The audio output of described warning circuit 4 connects loudspeaker, and the input of described firing circuit 5 is electrically connected with the audio output of warning circuit 4, and its output is connected with spray point 6.

As shown in Figure 2, described dc source 1 can adopt No. 5 batteries of two joint serial connections, and described device switch 2 is connected to dc power anode, and with the air valve interlock of gas range.When opening air valve timer switch closure, make dc source 1 and continuous circuit communication; Disconnect when closing gas check valve timer switch.

Described sensing circuit 3 comprises a ultraviolet transducing module, triode Q1 and line resistance R1 and R2; Described triode Q1 is the positive-negative-positive triode, and its base stage via line resistance R 1 is connected to dc power anode, and colelctor electrode via line resistance R 2 is connected to dc power anode, and emitter stage is connected to dc power cathode; Described ultraviolet transducing module is provided with an output that is electrically connected with the base stage of triode Q1, when detecting gas range and be in flameout state, and output low level; When detecting gas range and be in the burning-point state, the output high level.

Sensing circuit 3 matches mutually with warning circuit 4, when the triggering level of warning circuit is high level, triode Q1 in the sensing circuit is replaceable to be NPN type triode, and when the triggering level of warning circuit was low level, the triode Q1 in the sensing circuit is replaceable to be the positive-negative-positive triode.

Described warning circuit 4 is provided with the first audio output (OUT1), the second audio output (OUT2) and trigger end (D), described first, second audio output (OUT1, OUT2) is electrically connected with loudspeaker, the audio frequency output that the high level that described warning circuit 4 receives according to its trigger end (D) or low level signal trigger first, second audio output (OUT1, OUT2); Described sensing circuit 3 is provided with a signal output part, is electrically connected with the trigger end of warning circuit 4; Described firing circuit 5 is provided with positive and negative input and positive and negative output, described positive and negative input is electrically connected with first, second audio output (OUT1, OUT2) of described warning circuit 4 respectively, and described positive and negative output is connected to respectively spray point 6.

Described firing circuit 5 comprises first order transformer T1, second level transformer T2, capacitor C 1, C2, C3 and C4, commutation diode D1, D2 and D3, and diac D4; 1,2 ends of the primary coil of described first order transformer T1 are the positive and negative input of firing circuit, and 3,4 ends of the secondary coil of second level transformer T2 are the positive and negative output of firing circuit; Secondary coil 3 ends of described first order transformer T1 link to each other with subsequent conditioning circuit through capacitor C 1, and 4 ends are connected with primary coil 2 ends of second level transformer T2; The anode of described commutation diode D1 is connected with 4 ends of first order transformer T1 secondary coil, and negative electrode is connected with capacitor C 1 one ends; The anode of described commutation diode D2 is connected with the cathodic electricity of commutation diode D1, and negative electrode is connected through 4 ends of capacitor C 2 with first order transformer T1 secondary coil; The anode of described commutation diode D3 is connected with commutation diode D2 cathodic electricity, and negative electrode is through capacitor C 3 and commutation diode D2 anodic bonding; Described capacitor C 4 one ends are connected with commutation diode D3 cathodic electricity, and the other end is electrically connected with secondary coil 4 ends of first order transformer; Described diac D4 anode is connected with second level transformer T2 primary coil 1 end, and negative electrode is connected with commutation diode D3 cathodic electricity.

As the improvement of such scheme, described spray point adopts the stainless steel strip of diameter 2mm, and the distance between two spray points is take 5mm as good.

Above-mentioned is preferred embodiments of the present invention, but does not limit the enforcement of this patent with this.All and the present invention program identical, approximate or equivalent transformation or the improvement done based on this all belong to the protection domain of this patent.

Claims

1. A gas stove flameout alarm and automatic ignition device, comprising a DC power supply, a device switch, a sensing circuit and an ignition circuit, characterized in that: it also includes an alarm circuit, and the alarm circuit is provided with a first audio output terminal, a second Two audio output terminals and a trigger terminal, the first and second audio output terminals are electrically connected to the speaker, and the alarm circuit triggers the first and second audio output terminals according to the high level or low level signal received by the trigger terminal terminal audio output; the sensing circuit is provided with a signal output terminal, electrically connected to the trigger terminal of the alarm circuit; the ignition circuit is provided with positive and negative input terminals and positive and negative output terminals, and the positive and negative input terminals terminals are respectively electrically connected to the first and second audio output terminals of the alarm circuit, and the positive and negative output terminals are respectively connected to discharge needles.

2. A gas stove flameout alarm and automatic ignition device according to claim 1, characterized in that: the switch of the device is linked with the gas valve of the gas stove, and when the gas valve is opened, the switch of the device is closed, so that the DC power supply and the The continuous circuit is connected; when the gas valve is closed, the switch of the device is disconnected.

3. A gas stove flameout alarm and automatic ignition device according to claim 2, characterized in that: the ignition circuit includes a first-stage transformer T1, a second-stage transformer T2, capacitors C1, C2, C3 and C4, Rectifier diodes D1, D2 and D3, and trigger diode D4; terminals 1 and 2 of the primary coil of the first-stage transformer T1 are positive and negative input terminals of the ignition circuit, terminals 3 and 2 of the secondary coil of the second-stage transformer T2 Terminal 4 is the positive and negative output terminals of the ignition circuit; Terminal 3 of the secondary coil of the first stage transformer T1 is connected to the follow-up circuit through a capacitor C1, and terminal 4 is connected to terminal 2 of the primary coil of the second stage transformer T2; The anode of the rectifier diode D1 is connected to the 4 terminals of the secondary coil of the first stage transformer T1, and the cathode is connected to one end of the capacitor C1; the anode of the rectifier diode D2 is electrically connected to the cathode of the rectifier diode D1, and the cathode is connected to the first terminal through the capacitor C2. The 4 terminals of the secondary coil of the stage transformer T1 are connected; the anode of the rectifier diode D3 is electrically connected with the cathode of the rectifier diode D2, and the cathode is connected with the anode of the rectifier diode D2 through the capacitor C3; one end of the capacitor C4 is electrically connected with the cathode of the rectifier diode D3, The other end is electrically connected to terminal 4 of the secondary coil of the first-stage transformer; the anode of the trigger diode D4 is connected to terminal 1 of the primary coil of the second-stage transformer T2, and the cathode is electrically connected to the cathode of the rectifier diode D3.

4. A gas stove flameout alarm and automatic ignition device according to claim 2 or 3, characterized in that: the sensing circuit includes an ultraviolet sensing module, transistor Q1 and line resistors R1 and R2; Transistor Q1 is a PNP triode, its base is connected to the positive pole of the DC power supply through the line resistor R1, the collector is connected to the positive pole of the DC power supply through the line resistor R2, and the emitter is connected to the negative pole of the DC power supply; the ultraviolet sensing module is provided with a The base of the transistor Q1 is electrically connected to the output terminal.

5. A gas stove flameout alarm and automatic ignition device according to claim 4, characterized in that: said discharge needles are stainless steel strips with a diameter of 2 mm, and the distance between the two discharge needles is about 4 to 6 mm.