CN2361887Y - Electronic temp. control switch for electric fan - Google Patents
Electronic temp. control switch for electric fan Download PDFInfo
- Publication number
- CN2361887Y CN2361887Y CN 98231341 CN98231341U CN2361887Y CN 2361887 Y CN2361887 Y CN 2361887Y CN 98231341 CN98231341 CN 98231341 CN 98231341 U CN98231341 U CN 98231341U CN 2361887 Y CN2361887 Y CN 2361887Y
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- China
- Prior art keywords
- circuit
- transistor
- electric fan
- temperature
- temperature control
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Abstract
The utility model discloses an electronic temperature control switch for an electric fan, which comprises a casing and a circuit., wherein, the circuit part is composed of a voltage reduction and commutation filtering circuit, a voltage stabilizing circuit, and a temperature control circuit. The input end of the electric temperature controlled switch is connected with the output end of the electric temperature controlled switch through a normally open contact of a relay K arranged in the temperature control electric circuit. When the utility model is used, the controlled temperature that whether the electric fan works or not is arranged according to the need. The open state and the close state of the normally open contact of the relay K arranged in the temperature control electric circuit occur variation according to the variation of environment temperature. Thereby, the automatic control of the operating state of the electric fan which is butted with the output end of the electronic temperature controlled switch is realized.
Description
The utility model relates to a kind of automatic temperature control, particularly a kind of electric fan electron temperature detect switch.
Electric fan commonly used is divided into two kinds of manual control and remote controls, and what have also has timing control apparatus, and its shortcoming is the automatic control that can not realize according to the variation of user's needs and ambient temperature working state.When being in the timing controlled mode, if it is still too high regularly to exhaust the back ambient temperature, and electric fan quits work, and does not reach cooling-down effect; If ambient temperature has reduced and regularly do not exhaust as yet, electric fan is still worked, and causes user's flu of suffering from cold easily, and wastes electricity consumption.When being in the non-timed control mode or not having timing control apparatus, whether the work of electric fan depends on the user, under the in running order situation of electric fan, when ambient temperature reduces (as night), if forgetting, the user closes or sleeping, then cause the flu of suffering from cold easily, and the waste electricity consumption; Under the out-of-work situation of electric fan, (as afternoon rest) then do not reach cooling-down effect when ambient temperature raises.
The purpose of this utility model provides a kind of electric fan electron temperature detect switch, it can set control electric fan work whether temperature as required by the user, and can control automatically (if ambient temperature reaches or is higher than setting temperature, then electric fan work the electric fan working state according to the variation of ambient temperature; If ambient temperature is lower than setting temperature, then electric fan quits work).
The purpose of this utility model is achieved in that the electric fan electron temperature detect switch comprises shell and circuit two-part, wherein circuit part is by step-down, current rectifying and wave filtering circuit, mu balanced circuit, temperature control circuit is formed, the AC220V power supply is inserted by the temperature detect switch (TDS) input end, temperature detect switch (TDS) output termination electric fan M, between the output terminal of temperature detect switch (TDS) and the input end a road links to each other, another road links to each other by the normally opened contact of temperature control circuit repeat circuit K, the AC220V power supply provides galvanic current to press through mu balanced circuit to temperature control circuit after step-down, current rectifying and wave filtering circuit again.When ambient temperature rises to setting temperature or when higher, temperature control circuit work, relay K normally opened contact closure, temperature detect switch (TDS) output terminal and AC220V power connection, thus make the electric fan M work that is connected on the temperature detect switch (TDS) output terminal; Otherwise when ambient temperature is reduced to setting temperature when following, temperature control circuit is not worked, and the normally opened contact of relay K opens, and temperature detect switch (TDS) output terminal and AC220V power supply disconnect, thereby the electric fan M that is connected on the temperature detect switch (TDS) output terminal is quit work.
Because this electric fan electron temperature detect switch can be set control electric fan work whether temperature according to self needs by the user, and whether electric fan work is controlled automatically according to the variation of ambient temperature, thereby can avoid sleeping or forget that closing electric fan causes the phenomenon of the flu of suffering from cold to take place, and can save electricity consumption because of the user; Electric fan does not quit work and does not reach the situation of cooling-down effect in the time of can not occurring in ambient temperature yet and raise.
Below in conjunction with accompanying drawing most preferred embodiment of the present utility model is elaborated.
Fig. 1 is the outline drawing of electric fan electron temperature detect switch;
Fig. 2 is the electrical principle skeleton diagram of electric fan electron temperature detect switch;
Fig. 3 is the electrical schematic diagram of electric fan electron temperature detect switch;
Fig. 4 is the another kind of electrical schematic diagram of electric fan electron temperature detect switch.
Fig. 1 shows the outer surface structure of this electric fan electron temperature detect switch.
Fig. 2 shows the electrical principle skeleton diagram of this electric fan electron temperature detect switch.Input termination AC220V power supply among the figure, input end one end and operational mode switch S
1Join operational mode switch S
1Be single-pole double-throw switch (SPDT), wherein contact A links to each other with the temperature detect switch (TDS) output terminal, contact B and step-down, current rectifying and wave filtering circuit and temperature control circuit repeat circuit K normally opened contact join, and the other end of normally opened contact is received the output terminal of temperature detect switch (TDS), and mu balanced circuit is pressed for temperature control circuit provides galvanic current.As operational mode switch S
1When connecting with contact A, this electric fan electron temperature detect switch is in conventional control mode, is equivalent to two leads, makes the direct and input end AC220V power connection of electric fan M.As operational mode switch S
1When connecting with contact B, the electric fan electron temperature detect switch is in the electronic temperature control mode, when ambient temperature rises to setting temperature or when higher, and temperature control circuit work, relay K normally opened contact closure, thus the AC220V power connection of electric fan M and input end is also worked; When ambient temperature drops to when being lower than setting temperature, temperature control circuit is not worked, and the relay K normally opened contact opens, thereby electric fan M and input end AC220V power supply are disconnected and quits work.
Fig. 3 shows the electrical schematic diagram of this electric fan electron temperature detect switch.Wherein step-down, current rectifying and wave filtering circuit adopt resistance R
1And capacitor C
1Step-down is adopted by VD
1～VD
4The bridge rectifier of forming carries out rectification, also can adopt the transformer step-down; Mu balanced circuit is by voltage-stabiliser tube VD
5, integrated three-terminal regulator W7812 forms (1,2,3 are respectively input end, output terminal and the common port of integrated three-terminal regulator W7812), also can form by voltage-stabiliser tube and transistor circuit; Temperature control circuit comprises by variable resistor Rp, thermistor t
1°, t
2°, transistor BG
1The front stage transistor amplification circuit that constitutes and by transistor BG
2, diode VD
7, VD
8, light emitting diode ED, relay K, resistance R
3, R
4Back level transistor switching circuit, wherein the transistor BG in the front stage transistor amplification circuit that constitute
1Transistor BG in emitter and the back level transistor switching circuit
2Oppositely be connected in series a voltage-stabiliser tube VD between the base stage
6, base bias circuit is by variable resistor Rp, thermistor t in the front stage transistor amplification circuit
1°, t
2° composition, thermistor t
1° be negative temperature coefficient resister, t
2° be positive temperature coefficient resistor; In the branch road of input end that connects step-down, current rectifying and wave filtering circuit and temperature control circuit repeat circuit K normally opened contact, be serially connected with one by choked flow transformer L and single knife switch S
2The alignment circuit of being formed in parallel, this alignment circuit also can be serially connected in the input end and the operational mode switch S of electric fan electron temperature detect switch
1Between, work as switch S
2During disconnection,, work as switch S because the choked flow effect of choked flow transformer L can make the original wind speed of electric fan reduce
2When closed, L is inoperative for the choked flow transformer, and electric fan keeps original wind speed.The working principle of this electric fan electron temperature detect switch is such: as operational mode switch S
1When connecting with contact A, the electric fan electron temperature detect switch is in the routine work mode, and whole temperature switch circuit is equivalent to two leads, and electric fan M directly connects with the AC220V power supply that inserts from input end.Operational mode switch S
1When connecting with contact B, the electric fan electron temperature detect switch is in the electronic temperature control mode, and the AC220V power supply provides galvanic current to press through mu balanced circuit to temperature control circuit behind step-down, current rectifying and wave filtering circuit again, when ambient temperature is elevated to setting temperature or when higher, thermistor t
1° resistance reduces t
2° resistance increases, and makes transistor BG
1Base potential meets or exceeds voltage-stabiliser tube VD
6Voltage stabilizing value and transistor BG
1, BG
2Emitter junction junction voltage sum, transistor BG at this moment
1, BG
2Be on state, BG
2Produce collector current, relay K normally opened contact closure, the temperature detect switch (TDS) output terminal connects electric fan M and AC220V power connection and work, and simultaneously, light emitting diode ED is luminous; When ambient temperature is reduced to setting temperature when following, thermistor t
1° resistance increases, t
2° resistance reduces, and makes transistor BG
1Base potential is lower than voltage-stabiliser tube VD
6Voltage stabilizing value and transistor BG
1, BG
2Emitter junction junction voltage sum, transistor BG at this moment
1, BG
2Be in cut-off state, BG
2Collector electrode does not have electric current, and the relay K normally opened contact opens, and the temperature detect switch (TDS) output terminal connects electric fan M and the disconnection of AC220V power supply and quits work, and simultaneously, light emitting diode ED is not luminous.
Fig. 4 shows the another kind of electrical schematic diagram of this electric fan electron temperature detect switch.Compare with Fig. 3, only mu balanced circuit and temperature control circuit change among the figure.Mu balanced circuit only uses voltage-stabiliser tube VD among the figure
5The element that temperature control circuit adopts special electric contact mercury thermometer WXG-t to change as sense ambient temperature, but protruding several conductive contacts in mercury column contacting point, electric contact mercury thermometer WXG-t center, the peak that each contact rises corresponding to thermometer mercury column under the relevant temperature, appropriate location below the minimum point in the peak that the pairing mercury column of these conductive contacts rises also has an outwardly directed wiring, and by it and resistance R
5Join resistance R
5The other end and voltage-stabiliser tube VD
5Backward end join; Outwardly directed several conductive contacts of thermometer WXG-t can be respectively and switch S
3Connect, to realize the setting of control temperature, switch S
3Link to each other with transistor BG base stage in the transistor switching circuit, in addition, temperature control circuit also comprises resistance R
3, R
4, diode VD
7, VD
8Light emitting diode ED and relay K.When ambient temperature is elevated to setting temperature or higher, electric contact mercury thermometer WXG-t center mercury column rises, meet or exceed the required mercury pressure of the pairing conductive contact conducting of setting temperature, at this moment, transistor BG is on state, collector electrode has electric current to flow through, the normally opened contact closure of relay K, and the temperature detect switch (TDS) output terminal connects electric fan M and AC220V power connection and work; Otherwise, when ambient temperature is reduced to below the setting temperature, electric contact mercury thermometer WXG-t center mercury column descends, be lower than the required mercury pressure of the pairing conductive contact conducting of setting temperature, at this moment, transistor BG is in cut-off state, and collector electrode does not have electric current to flow through, the normally opened contact of relay K opens, and the temperature detect switch (TDS) output terminal connects electric fan M and the disconnection of AC220V power supply and quits work.
Claims (4)
1, a kind of electric fan electron temperature detect switch comprises shell and circuit two-part, it is characterized in that: circuit part is by step-down, current rectifying and wave filtering circuit, mu balanced circuit, and temperature control circuit is formed; Adopt resistance R in wherein step-down, the current rectifying and wave filtering circuit
1And capacitor C
1Bridge rectifier VD is adopted in step-down
1～VD
4Rectification, mu balanced circuit is by a voltage-stabiliser tube VD
5Form with an integrated three-terminal regulator W7812, temperature control circuit comprises by variable resistor Rp, thermistor t
1°, t
2°, transistor BG
1The front stage transistor amplification circuit that constitutes and by transistor BG
2, diode VD
7, VD
8, light emitting diode ED, relay K, resistance R
3, R
4Back level transistor switching circuit, wherein the transistor BG in the front stage transistor amplification circuit that constitute
1Transistor BG in emitter and the back level transistor switching circuit
2Oppositely be connected in series a voltage-stabiliser tube VD between the base stage
6, base bias circuit is by variable resistor Rp, thermistor t in the front stage transistor amplification circuit
1°, t
2° composition.
2, a kind of electric fan electron temperature detect switch according to claim 1 is characterized in that: thermistor t
1° be negative temperature coefficient resister, t
2° be positive temperature coefficient resistor.
3, a kind of electric fan electron temperature detect switch comprises shell and circuit two-part, it is characterized in that: circuit part is by step-down, current rectifying and wave filtering circuit, mu balanced circuit, and temperature control circuit is formed; Adopt resistance R in wherein step-down, the current rectifying and wave filtering circuit
1And capacitor C
1Bridge rectifier VD is adopted in step-down
1～VD
4Rectification oppositely is connected with a voltage-stabiliser tube VD at the output terminal of step-down, current rectifying and wave filtering circuit
5, temperature control circuit comprises special electric contact mercury thermometer WXG-t and by transistor BG, resistance R
3, R
4, diode VD
7, VD
8, the transistor switching circuit that constitutes of light emitting diode ED, relay K, but wherein outwardly directed several conductive contacts in mercury column contacting point, electric contact mercury thermometer WXG-t center can pass through switch S
3Link to each other with transistor BG base stage respectively, resistance R is passed through in the following appropriate location of minimum point in the peak that the pairing mercury column of the outwardly directed conductive contact of electric contact mercury thermometer WXG-t rises
5With voltage-stabiliser tube VD
5Backward end join.
4, a kind of electric fan electron temperature detect switch according to claim 3 is characterized in that: but be more than 3 from the outwardly directed conductive contact in mercury column contacting point, electric contact mercury thermometer WXG-t center in the temperature control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98231341 CN2361887Y (en) | 1998-09-15 | 1998-09-15 | Electronic temp. control switch for electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98231341 CN2361887Y (en) | 1998-09-15 | 1998-09-15 | Electronic temp. control switch for electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2361887Y true CN2361887Y (en) | 2000-02-02 |
Family
ID=33980723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98231341 Expired - Fee Related CN2361887Y (en) | 1998-09-15 | 1998-09-15 | Electronic temp. control switch for electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2361887Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867172B (en) * | 2009-12-10 | 2012-08-22 | 韩俊 | Heat protection circuit |
| CN104376768A (en) * | 2014-11-13 | 2015-02-25 | 盐城工业职业技术学院 | Thermistor feature and application experimental instrument |
| CN107098041A (en) * | 2017-06-22 | 2017-08-29 | 马鞍山英维爱生态科技有限公司 | A kind of fruits transport protection device |
| CN114115384A (en) * | 2021-11-12 | 2022-03-01 | 南京康伦电子有限公司 | Intelligent temperature control electronic pressure regulating device and method |
-
1998
- 1998-09-15 CN CN 98231341 patent/CN2361887Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867172B (en) * | 2009-12-10 | 2012-08-22 | 韩俊 | Heat protection circuit |
| CN104376768A (en) * | 2014-11-13 | 2015-02-25 | 盐城工业职业技术学院 | Thermistor feature and application experimental instrument |
| CN107098041A (en) * | 2017-06-22 | 2017-08-29 | 马鞍山英维爱生态科技有限公司 | A kind of fruits transport protection device |
| CN107098041B (en) * | 2017-06-22 | 2019-02-22 | 马鞍山英维爱生态科技有限公司 | A kind of fruits transport protective device |
| CN114115384A (en) * | 2021-11-12 | 2022-03-01 | 南京康伦电子有限公司 | Intelligent temperature control electronic pressure regulating device and method |
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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 |