CN2214620Y - Timing shutting down device for gas implement - Google Patents
Timing shutting down device for gas implement Download PDFInfo
- Publication number
- CN2214620Y CN2214620Y CN 94236259 CN94236259U CN2214620Y CN 2214620 Y CN2214620 Y CN 2214620Y CN 94236259 CN94236259 CN 94236259 CN 94236259 U CN94236259 U CN 94236259U CN 2214620 Y CN2214620 Y CN 2214620Y
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- winding
- gas
- magnetic valve
- gas appliance
- timing
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- Expired - Fee Related
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Abstract
The utility model relates to a timing shutting down device for a gas implement, comprising an electric thermocouple, an electromagnetic valve, a timing magnetism-on, a direct current power supply and a capacitor. The electromagnetic valve comprises a first winding and a second winding, and the first winding is connected with the electric thermocouple in series and the second winding and the direct current power supply are alternately communicated with the capacitor by the timing switch. Because the timing switch is not connected in series in the return circuit of the electric thermocouple, the possibility that the electromagnetic valve creates false action because of the enlarging of the contact resistance of the timing switch is eliminated. Besides, the safety of people is ensured and the gas implement can be used reliably.
Description
The utility model relates to Gas appliance, and the gas blanket is closed in the timing that relates in particular to Gas appliance.
Existing Gas appliance for example gas kitchen ranges or gas heater is installed flame-out usually or is regularly closed device of air, during use as meeting accident flame-out or forget that closing gas will cause combustion gas to escape or long-time dry combustion method, when serious even threat to life and property.Disclose the flame-out and regular automatical shutoff device of a kind of Gas appliance as No. 90216682.4 Chinese utility application, Fig. 1 shows the basic structure of this device.As can see from Figure 1, thermocouple 10 is arranged near the burner 2 of Gas appliance 1, and it is connected to magnetic valve 20 via time switch 30.When thermocouple 1 is sensed the high temperature of the flame generation in the burner 2, form a function of current and make it open inlet channel in magnetic valve 20.When the flame in the burner 2 extinguished because of accident or regularly finish, no current flow through in the magnetic valve 20, and valve 22 is closed inlet channel under the effect of spring 26.
Yet, the electric current that thermocouple is at high temperature produced is very little, device as shown in Figure 1 is serially connected in time switch in the thermocouple loop, the formed contact resistance of its make and break contact will increase along with the prolongation of life cycle, to have influence on the action sensitivity of magnetic valve thus, when serious even produce misoperation.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of highly sensitive, safe and reliable Gas appliance regularly to close the gas blanket.
Regularly close the gas blanket according to Gas appliance of the present utility model, it comprises near the thermocouple that is arranged on the Gas appliance burner, be arranged on the magnetic valve in the Gas appliance inlet channel, in order to control time switch and the capacitor and the dc source of this magnetic valve action.Described magnetic valve comprises first winding and second winding, and its first winding and described thermocouple are in series, and its second winding and described dc source alternately are in parallel with described capacitor via described time switch.
Adopt Gas appliance of the present utility model regularly to close the gas blanket, because time switch is not serially connected in the thermocouple loop, make magnetic valve produce the possibility of misoperation so eliminated, thereby guarantee people's safety, use Gas appliance reliably because of the contact resistance of time switch increases.
Below with reference to drawings and Examples Gas appliance of the present utility model regularly being closed the gas blanket is described in further detail.
Fig. 1 is the flame-out structural representation with regular automatical shutoff device of a kind of Gas appliance of prior art;
Fig. 2 is the electrical block diagram that Gas appliance of the present utility model regularly closes the gas blanket.
Referring to Fig. 2, Gas appliance of the present utility model regularly closes the gas blanket and comprises thermocouple 4, magnetic valve 5, time switch 6, capacitor 7 and dc source 8.Wherein, thermocouple 4 and magnetic valve 5 are separately positioned near and the inlet channel interior (not shown) of burner of Gas appliance.Magnetic valve 5 for example adopts the dual coil electromagnetic valve, and it comprises first winding 51 and second winding 52.Time switch 6 for example adopts mechanical type single-pole double throw time switch, and it comprises first docking point 61 and second docking point 62.Above-mentioned first winding 51 is connected in series with thermocouple 4, second winding 52 can be connected in parallel with capacitor 7 via first docking point 61 of time switch 6 with turn-offing, and dc source (for example using battery) 8 can be connected in parallel with capacitor 7 via second docking point 62 of time switch 6 with turn-offing.Because time switch 6 adopts the single-pole double throw pattern, so its first docking point 61 and second docking point 62 are alternately closed or disconnection.
Next the course of action that Gas appliance of the present utility model regularly closes the gas blanket is described.
The for example manual valve of opening magnetic valve 5 is got angry the burner point of Gas appliance during use, and thermocouple 4 back that is heated produces electric current first winding 51 of flowing through, and the latter produces a magnetic field makes the valve of magnetic valve 5 stay open state.This moment is flame-out as meeting accident, and no current flows through in first winding 51, and the valve of magnetic valve 5 is closed inlet channel under the effect of aforementioned spring force.Adopt when regularly stopping working, time switch 6 is placed duty, its second docking point, 62 closures, dc source 8 is to capacitor 7 chargings.Regularly finish, second docking point 62 of time switch 6 disconnects, first docking point, 61 closures, capacitor 7 provides a reverse impulse electric current to second winding 52 of magnetic valve 5, make the latter produce one with first winding 51 in opposite magnetic field, to offset or to weaken the magnetic field that is produced in first winding 51, magnetic valve 5 is moved under the effect of spring force close inlet channel.
Certainly, the above only is the preferred embodiment that the utility model Gas appliance regularly closes the gas blanket.According to design of the present utility model, those skilled in the art also can make all conversion to this, but they all belong within the scope of the present utility model.
Claims (3)
1, a kind of Gas appliance regularly closes the gas blanket, comprise and be arranged near the thermocouple of Gas appliance burner, be arranged on the magnetic valve in the Gas appliance admission line, and in order to control the time switch of described magnetic valve action, it is characterized in that it also comprises capacitor and dc source, described magnetic valve comprises first winding and second winding, its first winding and described thermocouple are in series, and its second winding and described dc source alternately are in parallel with described capacitor via described time switch.
2, Gas appliance as claimed in claim 1 regularly closes the gas blanket, it is characterized in that described time switch is a mechanical type single-pole double throw timer.
3, Gas appliance as claimed in claim 1 or 2 regularly closes the gas blanket, it is characterized in that described magnetic valve is the dual coil electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236259 CN2214620Y (en) | 1994-12-31 | 1994-12-31 | Timing shutting down device for gas implement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236259 CN2214620Y (en) | 1994-12-31 | 1994-12-31 | Timing shutting down device for gas implement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214620Y true CN2214620Y (en) | 1995-12-06 |
Family
ID=33844279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94236259 Expired - Fee Related CN2214620Y (en) | 1994-12-31 | 1994-12-31 | Timing shutting down device for gas implement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214620Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682560A (en) * | 2020-12-29 | 2021-04-20 | 中国航空工业集团公司西安飞机设计研究所 | Electromagnetic valve driving circuit capable of preventing misoperation |
-
1994
- 1994-12-31 CN CN 94236259 patent/CN2214620Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682560A (en) * | 2020-12-29 | 2021-04-20 | 中国航空工业集团公司西安飞机设计研究所 | Electromagnetic valve driving circuit capable of preventing misoperation |
| CN112682560B (en) * | 2020-12-29 | 2023-02-10 | 中国航空工业集团公司西安飞机设计研究所 | Electromagnetic valve driving circuit for preventing misoperation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |