CN2715448Y - Electric heated vacuum flask heater control device - Google Patents
Electric heated vacuum flask heater control device Download PDFInfo
- Publication number
- CN2715448Y CN2715448Y CN 200420044564 CN200420044564U CN2715448Y CN 2715448 Y CN2715448 Y CN 2715448Y CN 200420044564 CN200420044564 CN 200420044564 CN 200420044564 U CN200420044564 U CN 200420044564U CN 2715448 Y CN2715448 Y CN 2715448Y
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- China
- Prior art keywords
- control device
- normally
- heater
- relay
- heater control
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- Expired - Fee Related
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Abstract
The utility model relates to an electric heated vacuum flask heater control device, comprising an excess temperature switch K2, a water temperature switch K3 and a relay J1. The excess temperature switch K2, the water temperature switch K3 and the relay J1 are connected with the alternating current after connecting in series. The relay J1 is provided with a normally open contact J1-1 and a normally-closed contact J1-2. The utility model is characterized in that the electric heated vacuum flask heater control device also comprises a pressure reducing device. The normally-closed contact J1-2 is connected in series with the pressure reducing device, and then is connected in parallel with the normally open contact J1-1; the parallel circuit is then connected in series with a heater R. The electric heated vacuum flask heater control device can change the pressure on both ends of the heater, so a set of heaters can be used to heat or preserve the heat, extending the life of the heater and reducing the waste.
Description
One, technical field
The utility model relates to a kind of electric-heating thermos heater control device.
Two, background technology
Present electric-heating thermos heater control device comprises relay, coolant temperature switch and overtemperature switch; Relay has a normally opened contact and a normally-closed contact, be connected on alternating current behind the normally opened contact sending and receiving hot body, normally-closed contact also directly connects alternating current after connecing thermal insulator, and two groups of heaters all are to work under the alternating voltage of 220V, influence the life-span of heater, and the loss power supply.
Three, utility model content
The purpose of this utility model provides that one group of calandria of a kind of usefulness can be realized heating and the electric-heating thermos heater control device of heat insulation function.
In order to achieve the above object, the utility model is achieved in that and comprises overtemperature K switch 2, coolant temperature switch K3 and relay J 1 that they connect alternating current after the series connection mutually; Relay J 1 is with a normally opened contact J1-1 and a normally-closed contact J1-2, it is characterized in that: also comprise a dropping equipment; Normally-closed contact J1-2 is with in parallel with normally opened contact J1-1 again after dropping equipment is connected, and this parallel circuits is connected with heater R again.
Of the present utility modelly further be improved to, dropping equipment is a capacitor C; Dropping equipment also can comprise bidirectional triode thyristor D1, bidirectional diode D2, diode D3, capacitor C 1 and resistance R 3; Capacitor C 1 is with after diode D3 is in parallel, and an end is the end of connecting resistance R3 respectively, the end of another termination bidirectional triode thyristor D1, the other end of another termination bidirectional triode thyristor D1 of resistance R 3, the trigger end of another termination bidirectional triode thyristor D1 of bidirectional diode D2.
The utility model compared with prior art has following advantage:
Therefore 1, can change the voltage at heater two ends, can heat or be incubated with one group of heater;
2, prolonged the life-span of calandria;
3, reduced loss.
Four, description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment one;
Fig. 2 is the circuit theory diagrams of the utility model embodiment two.
Five, embodiment
Below in conjunction with drawings and Examples the utility model is done further detailed description:
As shown in Figure 1, comprise overtemperature K switch 2, coolant temperature switch K3 and relay J 1, they take over moving K switch 1 after the series connection mutually again, connect alternating current by fuse RZ again; At the two ends of coolant temperature switch K3 and be connected to an insulation bulb R1, also and be connected to a heating bulb R2 at the two ends of relay J 1.Relay J 1 is with a normally opened contact J1-1 and a normally-closed contact J1-2, and normally-closed contact J1-2 is with in parallel with normally opened contact J1-1 again after capacitor C is connected, and this parallel circuits is connected with heater R again, and this series circuit connects alternating current by fuse RZ again.During work, when heating, coolant temperature switch K3 and 2 conductings of overtemperature K switch, relay J 1 work, heating lamp R2 is bright, and its normally opened contact J1-1 connects, and heater R connects 220V city alternating current, and its normally-closed contact J1-2 disconnects; After the water boiling, coolant temperature switch K3 disconnects, R1 is bright for the insulation lamp, relay J 1 is not worked, and heating lamp R2 goes out, and normally opened contact J1-1 disconnects, normally-closed contact J1-2 closure, heater R connects 220V city alternating current after by the capacitor C step-down, has changed the voltage at heater two ends, thereby has reached the purpose of heating and insulation.
As shown in Figure 2, comprise overtemperature K switch 2, coolant temperature switch K3 and relay J 1, they take over moving K switch 1 after the series connection mutually again, connect alternating current by fuse RZ again; At the two ends of coolant temperature switch K3 and be connected to an insulation bulb R1, also and be connected to a heating bulb R2 at the two ends of relay J 1.Relay J 1 is with a normally opened contact J1-1 and a normally-closed contact J1-2, normally-closed contact J1-2 is with in parallel with normally opened contact J1-1 again after bidirectional triode thyristor D1 connects, this parallel circuits is connected with heater R again, capacitor C 1 is with after diode D3 is in parallel, one end is the end of connecting resistance R3 respectively, the end of another termination bidirectional triode thyristor D1, the other end of another termination bidirectional triode thyristor D1 of resistance R 3, the trigger end of another termination bidirectional triode thyristor D1 of bidirectional diode D2.During work, when heating, coolant temperature switch K3 and 2 conductings of overtemperature K switch, relay J 1 work, heating lamp R2 is bright, and its normally opened contact J1-1 connects, and heater R connects 220V city alternating current, and its normally-closed contact J1-2 disconnects; After the water boiling, coolant temperature switch K3 disconnects, and R1 is bright for the insulation lamp, relay J 1 is not worked, heating lamp R2 goes out, and normally opened contact J1-1 disconnects, normally-closed contact J1-2 closure, voltage is by 1 charging of 1 pair of capacitor C of resistance R, when reaching the trigger voltage of bidirectional triode thyristor D1, bidirectional triode thyristor D1 conducting, heater R connects 220V city alternating current after by bidirectional triode thyristor D1 step-down, change the voltage at heater two ends, reached the purpose of heating and insulation.
Claims (3)
1, a kind of electric-heating thermos heater control device comprises overtemperature K switch 2, coolant temperature switch K3 and relay J 1, and they connect alternating current after the series connection mutually; Relay J 1 is with a normally opened contact J1-1 and a normally-closed contact J1-2, it is characterized in that: also comprise a dropping equipment; Normally-closed contact J1-2 is with in parallel with normally opened contact J1-1 again after dropping equipment is connected, and this parallel circuits is connected with heater R again.
2, electric-heating thermos heater control device according to claim 1, it is characterized in that: dropping equipment is a capacitor C.
3, electric-heating thermos heater control device according to claim 1, it is characterized in that: dropping equipment also can comprise bidirectional triode thyristor D1, bidirectional diode D2, diode D3, capacitor C 1 and resistance R 3; Capacitor C 1 is with after diode D3 is in parallel, and an end is the end of connecting resistance R3 respectively, the end of another termination bidirectional triode thyristor D1, the other end of another termination bidirectional triode thyristor D1 of resistance R 3, the trigger end of another termination bidirectional triode thyristor D1 of bidirectional diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420044564 CN2715448Y (en) | 2004-04-07 | 2004-04-07 | Electric heated vacuum flask heater control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420044564 CN2715448Y (en) | 2004-04-07 | 2004-04-07 | Electric heated vacuum flask heater control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2715448Y true CN2715448Y (en) | 2005-08-03 |
Family
ID=34872090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420044564 Expired - Fee Related CN2715448Y (en) | 2004-04-07 | 2004-04-07 | Electric heated vacuum flask heater control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2715448Y (en) |
-
2004
- 2004-04-07 CN CN 200420044564 patent/CN2715448Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050803 |