CN203948743U - There is power-off and often open the valve controling circuit of function - Google Patents
There is power-off and often open the valve controling circuit of function Download PDFInfo
- Publication number
- CN203948743U CN203948743U CN201420328900.4U CN201420328900U CN203948743U CN 203948743 U CN203948743 U CN 203948743U CN 201420328900 U CN201420328900 U CN 201420328900U CN 203948743 U CN203948743 U CN 203948743U
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- valve
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- pnp triode
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Abstract
The utility model relates to a kind of valve controling circuit that function is often opened in power-off that has.Comprise with the valve of opening valve input end and drive chip (U1), be characterized in: also comprise PNP triode (Q1), what the collector electrode of this PNP triode (Q1) connect that described valve drives chip (U1) opens valve input end, the base stage of this PNP triode (Q1) connects DC power anode by the second resistance (R2), the emitter of this PNP triode (Q1) connects DC power anode by the first diode (D1), at these the first diode (D1) two ends, be parallel with the first resistance (R1), the second diode (D2) and the 3rd diode (D3), the mid point of this second diode (D2) and the 3rd diode (D3) is by farad capacitor (C1) ground connection.Adopt of the present utility modelly to have power-off and often open the valve controling circuit of function valving is controlled, in the time of can guaranteeing power-off, valve is all the time in opening valve state.
Description
Technical field
The utility model relates to a kind of valve controling circuit that function is often opened in power-off that has.
Background technique
At present for heating installation and air-conditioning temperature control actuating device, now solenoid valves or the motor operated valves of adopting are controlled pipeline more, but in control procedure, exist after power-off malfunctioning, the phenomenon that state keeps, for example during power-off in close valve state, can cause room temperature affected by power-off larger.Also have the actuating device in heat metering temperature controlling device, after power-off, can cause the time measurement mistake of switch valve state.
Model utility content
The purpose of this utility model is to provide a kind of valve controling circuit that function is often opened in power-off that has, and in the time of can guaranteeing power-off, valve is in opening valve state.
A kind of have a valve controling circuit that function is often opened in power-off, comprise with the valve of opening valve input end and drive chip or with the valve driving circuit of opening valve input end, its specialization is: also comprise PNP triode, what the collector electrode of this PNP triode connect that described valve drives chip or valve driving circuit opens valve input end, the base stage of this PNP triode connects DC power anode by the second resistance, the emitter of this PNP triode connects DC power anode by the first diode, at these the first diode two ends, be parallel with the first resistance, the second diode and the 3rd diode, the mid point of this second diode and the 3rd diode is by farad capacitor ground connection.
Wherein the positive pole of the first diode connects DC power anode and its negative pole connects the emitter of PNP triode, and wherein the negative pole of the 3rd diode connects the emitter of PNP triode and its positive pole connects the negative pole of the second diode.
The minus earth of farad capacitor wherein.
Through probationary certificate, adopt and of the present utility modelly there is power-off and often open the valve controling circuit of function valving is controlled, in the time of can guaranteeing power-off, valve is all the time in opening valve state, in the time of so can be because of power-off, do not keep close valve state always and has a strong impact on room temperature.And valve, in normally open, is so just conducive to heat metering temperature controlling device and adopts metering closing valve time accurately to implement the time measurement of valve switch state when guaranteeing power-off.
Accompanying drawing explanation
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model is a kind of valve controling circuit that function is often opened in power-off that has, comprise with the valve of opening valve input end and drive chip U1 (for example L9349), and can certainly be with the valve driving circuit of opening valve input end.Also comprise PNP triode Q1, the collector electrode of this PNP triode Q1 connects described valve and drives that chip U1's open valve input end, the base stage of this PNP triode Q1 connects DC power anode by the second resistance R 2, the emitter of this PNP triode Q1 connects DC power anode by the first diode D1, at these the first diode D1 two ends, be parallel with the first resistance R 1, the second diode D2 and the 3rd diode D3, the mid point of this second diode D2 and the 3rd diode D3 is by farad capacitor C1 ground connection.
Further, wherein the positive pole of the first diode D1 connects DC power anode and its negative pole connects the emitter of PNP triode Q1, wherein the negative pole of the 3rd diode D3 connects the emitter of PNP triode Q1 and its positive pole connects the negative pole of the second diode D2, in addition the minus earth of farad capacitor C1.
Using method of the present utility model and working principle are:
DC power anode connects the positive pole (its minus earth) of farad capacitor C 1 by the first resistance R 1, the second diode D2, then is connected by the emitter of the 3rd transistor AND gate PNP triode Q1.DC power anode connects the base stage of PNP triode Q1 by the second resistance R 2, the collector electrode of PNP triode Q1 connects valve and drives that chip U1's open valve input end.
Under "on" position, DC power anode, to farad capacitor C1 charging, till being full of, drives the input signal of chip U1, the normal switch of control valve with the output of door chip U2 as valve.After power-off, because the base stage level of PNP triode is low, what farad capacitor C1 electric discharge drove chip U1 by the 3rd diode D3 to valve opens valve supplying power for input end, by PNP triode, as valve, drives the valve opening signal of chip U1 to input, thereby automatically perform power-off, often opens function.By suitable adjustment farad capacitor C1 size, can change output time, guarantee that opening valve events completes smoothly.
Claims (3)
1. one kind has the valve controling circuit that function is often opened in power-off, comprise with the valve of opening valve input end and drive chip (U1) or with the valve driving circuit of opening valve input end, it is characterized in that: also comprise PNP triode (Q1), what the collector electrode of this PNP triode (Q1) connect that described valve drives chip (U1) or valve driving circuit opens valve input end, the base stage of this PNP triode (Q1) connects DC power anode by the second resistance (R2), the emitter of this PNP triode (Q1) connects DC power anode by the first diode (D1), at these the first diode (D1) two ends, be parallel with the first resistance (R1), the second diode (D2) and the 3rd diode (D3), the mid point of this second diode (D2) and the 3rd diode (D3) is by farad capacitor (C1) ground connection.
2. as claimed in claim 1 have a valve controling circuit that function is often opened in power-off, it is characterized in that: wherein the positive pole of the first diode (D1) connects DC power anode and its negative pole connects the emitter of PNP triode (Q1), wherein the negative pole of the 3rd diode (D3) connects the emitter of PNP triode (Q1) and its positive pole connects the negative pole of the second diode (D2).
3. as claimed in claim 1 or 2 have a valve controling circuit that function is often opened in power-off, it is characterized in that: the minus earth of farad capacitor (C1) wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328900.4U CN203948743U (en) | 2014-06-19 | 2014-06-19 | There is power-off and often open the valve controling circuit of function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328900.4U CN203948743U (en) | 2014-06-19 | 2014-06-19 | There is power-off and often open the valve controling circuit of function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948743U true CN203948743U (en) | 2014-11-19 |
Family
ID=51890780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420328900.4U Expired - Fee Related CN203948743U (en) | 2014-06-19 | 2014-06-19 | There is power-off and often open the valve controling circuit of function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791534A (en) * | 2015-04-20 | 2015-07-22 | 成都千嘉科技有限公司 | Valve control system for gas meter and gas meter |
-
2014
- 2014-06-19 CN CN201420328900.4U patent/CN203948743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791534A (en) * | 2015-04-20 | 2015-07-22 | 成都千嘉科技有限公司 | Valve control system for gas meter and gas meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 750011 the Ningxia Hui Autonomous Region Jinfeng Industrial Park, Yinchuan District -57 B plant Patentee after: NINGXIA SAIWEN ENERGY SAVING EQUIPMENT MANUFACTURING CO., LTD. Address before: 750011 the Ningxia Hui Autonomous Region Jinfeng Industrial Park, Yinchuan District -57 B plant Patentee before: NINGXIA SAIWEN BUILDING ENERGY SAVING EQUIPMENT MANUFACTURING CO., LTD. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170522 Address after: 750011 the Ningxia Hui Autonomous Region Jinfeng District, Yinchuan City Plover Cove Road No. 402 Patentee after: Ningxia Saiwen technology Limited by Share Ltd Address before: 750011 the Ningxia Hui Autonomous Region Jinfeng Industrial Park, Yinchuan District -57 B plant Patentee before: NINGXIA SAIWEN ENERGY SAVING EQUIPMENT MANUFACTURING CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20180619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |