CN2171187Y - Simple fire-proof temp. regulating switch for electric heating blanket - Google Patents
Simple fire-proof temp. regulating switch for electric heating blanket Download PDFInfo
- Publication number
- CN2171187Y CN2171187Y CN 93227465 CN93227465U CN2171187Y CN 2171187 Y CN2171187 Y CN 2171187Y CN 93227465 CN93227465 CN 93227465 CN 93227465 U CN93227465 U CN 93227465U CN 2171187 Y CN2171187 Y CN 2171187Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- diode
- contact
- relay
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Control Of Resistance Heating (AREA)
Abstract
The utility model relates to a simple fireproof temperature regulating switch, comprising a resistance, a capacitance, a diode, a relay and a three-pole switch. The utility model is characterized in that a diode and a relay are connected to the contact point of the three-pole switch; the resistance, the capacitance, and the diode are connected in the contact point of the relay and the coil; electric heating wires are connected in series in the resistance and the contact point. The utility model has the advantages of simple structure, regulatory temperature, and low cost and has a luminous tube to display the working and the fault states.
Description
The utility model belongs to the simple and easy control switch that appliance switch relates to a kind of electric blanket.
The switch of existing electric blanket generally can only temperature adjustment, can not control the broken string sparking.In utility model patent 92210003.9, the problems referred to above are resolved, but exist technical sophistication, manufacturing cost height, should not apply.
The purpose of this utility model is to have designed on the original basis can temperature adjustment to prevent the simple and easy electric blanket fire prevention temperature regulating switch of striking sparks again.
The purpose of this utility model is the simple and easy electric blanket fire prevention temperature regulating switch of realizing like this, is to throw one by three cuttves two to disconnect the pass and resistance, electric capacity, diode, light-emitting diode and relay are constituted.Two cutter K of three-pole switch
1And K
2As mains switch and temperature adjustment, another cutter K
3As control and whole current supply circuit starting momentary action.Two cutter K in circuit
1And K
2Corresponding contact is respectively a
1And a
2, b
1And b
2, and at contact a
2b
2Between be connected with diode D
1Be used for rectification.Contact b
2With another cutter K
3Link to each other K
3Link to each other with relay J.In the contact of relay and coil, be connected with resistance R
3, and resistance R
3The corresponding resistance R that is parallel with
2, diode D
3And capacitor C, in resistance R
2With diode D
3Between series connection luminous tube D
5, in capacitor C and resistance R
3Between series diode D
2, resistance R
3With contact b
2Between be in series with heating wire R
0, resistance R
1, light-emitting diode D
4The course of work of the present utility model is such, when push-on switch, and the K of two cuttves
1And K
2Respectively with contact a
1And a
2Join (low temperature shelves), at this moment electric current is through diode D
1Rectification is through resistance R
3The back forms loop, at this moment resistance R
3Voltage through diode D
2Equate the normally opened contact adhesive of relay J, and that cutter K of control with relay coil voltage
3Disconnect again after connecting the control point, circuit is normal power supply still, just in case heating wire R
0The somewhere cuts off the power supply, moment the circuit no current, resistance R
3Loss of voltage, the circuit breaker coil is not worked, and the normally opened contact of on disconnects, as heating wire R
0Breakpoint contacts normally opened contact again and is in disconnection, the control one cutter K of this moment
3Also be in disconnection already, entire circuit is disconnected, and reaches the fire prevention purpose.When mains switch is put the high temperature shelves, two cutter K
1And K
2Respectively with contact b
1And b
2Contact, resistance R
3Voltage set up, the power-half cycle is by diode D
3, resistance R
3Also have an alternating current to pass through, positive half cycle is through diode D
3Cut-off current passes through resistance R
3, through diode D
2Be added on the coil of relay J, light-emitting diode when operate as normal two all work, as heating wire R
0When breakpoint occurring, light-emitting diode D
5Extinguish and reach the warning purpose.
Fig. 1 is a circuit diagram of the present utility model.
In the drawings, resistance R
1, R
2, R
3, heating wire R
0, light-emitting diode D
4, D
5, diode D
1, D
2, D
3, capacitor C, relay J, switch contact a
1a
2, b
1b
2
Claims (1)
- A kind of by the simple and easy electric blanket fire prevention temperature regulating switch that resistance, electric capacity, relay, diode and three-pole switch constituted, it is characterized in that:Switch contact K 1And K 2Respectively with contact a 1And a 2, b 1And b 2Corresponding, and at contact a 2And b 2Between be connected with diode D 1, contact b 2With another contact K 3Link to each other K 3Link to each other with relay J, in the contact of relay and coil, be connected with resistance R 3And resistance R 3The corresponding resistance R that is parallel with 2, diode D 3And capacitor C, in resistance R 2With diode D 3Between series connection light-emitting diode D 5, in capacitor C and resistance R 3Between series diode D 2, resistance R 3With contact b 2Portion is in series with heating wire R 0, resistance R 1With light-emitting diode D 4
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93227465 CN2171187Y (en) | 1993-03-03 | 1993-03-03 | Simple fire-proof temp. regulating switch for electric heating blanket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93227465 CN2171187Y (en) | 1993-03-03 | 1993-03-03 | Simple fire-proof temp. regulating switch for electric heating blanket |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2171187Y true CN2171187Y (en) | 1994-07-06 |
Family
ID=33804729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 93227465 Expired - Fee Related CN2171187Y (en) | 1993-03-03 | 1993-03-03 | Simple fire-proof temp. regulating switch for electric heating blanket |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2171187Y (en) |
-
1993
- 1993-03-03 CN CN 93227465 patent/CN2171187Y/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 | ||
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 |