CN201123774Y - Drying apparatus circuit - Google Patents
Drying apparatus circuit Download PDFInfo
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- CN201123774Y CN201123774Y CNU2007203117629U CN200720311762U CN201123774Y CN 201123774 Y CN201123774 Y CN 201123774Y CN U2007203117629 U CNU2007203117629 U CN U2007203117629U CN 200720311762 U CN200720311762 U CN 200720311762U CN 201123774 Y CN201123774 Y CN 201123774Y
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Abstract
The utility model discloses a circuit for a drier, comprising a luminous unit, a light sensing unit, a relay, a control unit and a hot wind output unit, wherein, the relay has a coil and a normally open switch; the luminous unit is coupled between a first power supply path curve and a second power supply path curve; one end of the light sensing unit and one end of the coil are coupled with the first power supply path curve, one end of the normally open switch is coupled with a third power supply path curve; the control unit is coupled with the other end of the light sensing unit and the other end of the coil, whether the coil is conducted is judged according to the voltage drop of the light sensing unit; the hot wind output unit is used for outputting hot wind and is provided with a first power supply input end and a second power supply input end, the first power supply input end is coupled with the other end of the normally open switch, the second power supply input end is coupled with a fourth power supply path curve.
Description
Technical field
The utility model relates to the field of drying unit, and particularly relevant for a kind of baker circuit.
Background technology
Hand dryer (hand dryer) is used in hotel, hospital, school, dining room and cinema widely ... Deng the toilet of public place, it can dry moist hand, keeping the sanitation and hygiene of hand, and further ward off disease, the cross-infection of bacterium.
Fig. 1 is the circuit diagram of traditional hand dryer.Please refer to Fig. 1, wherein 555 timers 102 are in order to producing square-wave signal RS, and then drive infrared light-emitting diode (infrared light-emitting diode) 104 emission infrared rays.When the user placed hand dryer (not illustrating) bottom with hand, because hand is to ultrared reflex, the infrared ray sense diode 106 in the hand dryer circuit can receive the infrared ray of reflection, and the infrared ray that receives is become the signal of telecommunication.Then, by integrated circuit 108,110 and 112 frequency-selective amplifiers of being formed signal of telecommunication amplification, shaping and filtering are become direct current signal again, send into the negative terminal of comparator 114 then.
When the level of above-mentioned direct current signal during greater than the threshold voltage VR of comparator 114, the output of comparator 114 will become electronegative potential (low), and then trigger 102 beginnings of 555 timers regularly, and make the output (being pin 3) of 555 timers 102 become high potential (high).Thus, transistor 116 will conducting, and the coil K that impels relay begins conducting and excitatory, and further allows the normal open switch K1 and the K2 closure of relay, with conducting heating wire 118 and start blower fan 120.In addition, locate also to be provided with switch 122 at the trigger end (pin 2) of 555 timers 102, whether carry out manual operation with decision, the switch 124 that is series at heating wire 118 is then in order to whether to select conducting heating wire 118, to select cold wind or hot blast.
By as can be known above-mentioned, traditional hand dryer circuit be owing to need carry out signal conversion, therefore complex structure not only, and related electronic component is also too many, causes the cost of circuit to increase.
Summary of the invention
The utility model provides a kind of baker circuit, and it does not need to carry out signal conversion, and simple in structure, related electronic component also seldom, circuit cost is lower.
The utility model proposes a kind of baker circuit, it includes luminescence unit, photosensitive unit, relay, control module and hot blast output unit, and its repeat circuit has coil and normal open switch.Luminescence unit is coupled between first power track and the second source path.A wherein end of photosensitive unit and a wherein end of coil all couple first power track, and a wherein end of normal open switch couples the 3rd power track.Control module couples the other end of photosensitive unit and the other end of coil, and determines whether make the coil conducting according to the pressure drop of photosensitive unit.The hot blast output unit is in order to the output hot blast, and this hot blast output unit has first power input and second source input, and first power input couples the other end of normal open switch, and the second source input couples the 4th power track.
In the utility model one embodiment, above-mentioned control module includes variable resistor and power switch circuit.Variable resistor has resistance first end, resistance second end and resistance and picks out end, and resistance first end couples the other end of photosensitive unit, and resistance second end couples the second source path.Power switch circuit has input, output, gating end, power supply input anode and power supply input negative terminal, wherein input and power supply input anode all couples first power track, power supply input negative terminal couples the second source path, the gating end couples above-mentioned resistance and picks out end, and output couples the other end of coil, and whether this power switch circuit makes its output conducting according to the decision of the voltage on the gating end.
In the utility model one embodiment, above-mentioned hot blast output unit includes heating wire, bridge rectifier and blower fan.Heating wire has heating wire first end, heating wire second end and heating wire and picks out end, and heating wire first end is as first power input, and heating wire second end is as the second source input.Bridge rectifier has two ac input ends, power supply output plus terminal and power supply output negative terminal, and above-mentioned two ac input ends couple heating wire first end respectively and heating wire picks out end.Blower fan has motor, and motor couples power supply output plus terminal and power supply output negative terminal.
In the utility model one embodiment, first above-mentioned power track and second source path are in order to coupling dc source, and the 3rd power track and the 4th power track are in order to couple AC power.
In the utility model one embodiment, above-mentioned baker circuit also includes second diode, lead and electric capacity.The anode of second diode couples the 3rd power track, and negative electrode couples first power track.Lead is coupled between the 4th power track and the second source path.Electric capacity is coupled between the negative electrode and second source path of second diode.And in this embodiment, the 3rd power track and the 4th power track are in order to couple AC power.
The utility model adopts luminescence unit, photosensitive unit, relay, control module and hot blast output unit to design the baker circuit, and one of them power input of hot blast output unit is coupled to one the 4th power track, the normal open switch that another power input then sees through relay determines whether being coupled to one the 3rd power track.In addition, also utilize photosensitive unit, and then the coil of driving control unit turn-on relay, make the normal open switch closure of relay in the change in pressure drop of blocking-up under the light source.Thus, as long as the light source of photosensitive unit is blocked, the hot blast output unit just can see through the 3rd power track and the 4th power track couples required power supply, so that send hot blast.Because the baker circuit of this design does not need to carry out the signal conversion, and is therefore simple in structure, related electronic component also seldom, circuit cost is lower.
For above-mentioned feature and advantage of the present utility model can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the circuit diagram of traditional hand dryer.
Fig. 2 is the circuit diagram according to the baker circuit of the utility model one embodiment.
Fig. 3 is the circuit diagram according to the baker circuit of another embodiment of the utility model.
The specific embodiment
Fig. 2 is the circuit diagram according to the baker circuit of the utility model one embodiment.Please refer to Fig. 2, this baker circuit includes luminescence unit 210, impedance 212, photosensitive unit 220, relay (relay has coil J and normal open switch J1), control module 230 and hot blast output unit 240.A wherein end of luminescence unit 210 sees through impedance 212 and couples power track 202, and the other end couples power track 204.A wherein end of photosensitive unit 220 couples power track 202.In the member of relay, the wherein end of coil J couples power track 202, and the wherein end of normal open switch J1 couples power track 206.Control module 230 couples the other end of photosensitive unit 220 and the other end of coil J, and determines whether to make coil J conducting according to the pressure drop of photosensitive unit 220.Hot blast output unit 240 is in order to the output hot blast, and this hot blast output unit 240 has two power inputs, and one of them power input couples the other end of normal open switch J1, and another power input couples power track 208.
Hot blast output unit 240 includes heating wire 242, bridge rectifier (bridge rectifier) 244 and blower fan 248.Heating wire 242 has heating wire first end 242-1, heating wire second end 242-2 and heating wire picks out end 242-3.Heating wire first end 242-1 is as the power input that is coupled to normal open switch J1, and heating wire second end 242-2 is as the power input that is coupled to power track 208.Bridge rectifier 244 has two ac input ends, indicates with 244-1 and 244-2 respectively.In addition, bridge rectifier 244 also has power supply output plus terminal 244-3 and power supply output negative terminal 244-4.Ac input end 244-1 and 244-2 couple heating wire first end 242-1 respectively and heating wire picks out end 242-3.Blower fan 246 has motor 248, and motor 248 couples power supply output plus terminal 244-3 and power supply output negative terminal 244-4.
In this example, impedance 212 and 236 all realizes with resistance.Luminescence unit 210 include light emitting diode (light-emitting diode, LED), the anode of described light emitting diode couples impedance 212, negative electrode then couples power track 204.Photosensitive unit 220 includes light sensitive diode (photo-diode), and the anode of described light sensitive diode couples power track 202, and negative electrode then couples the resistance first end 232-1 of variable resistor 232.As for above-mentioned power switch circuit 234, then can adopt the TWH8751 chip of Philip (Philips) company to implement, and the pin configuration mode of this TWH8751 chip has represented, does not repeat them here in figure.In addition, power track 202 and 204 is in order to couple dc source DC, for example power track 202 and 204 is coupled to power voltage terminal and the common electric potential end that dc source DC is provided respectively, power track 206 and 208 for example is coupled to power track 206 and 208 respectively the live wire end and the ground terminal of chamber electricity then in order to couple AC power AC.
When above-mentioned power track all was coupled to the required power supply of baker circuit, the baker circuit just can begin to operate.Suppose that the user does not place hand between luminescence unit 210 and the photosensitive unit 220 as yet, photosensitive unit 220 can receive the light of selfluminous cell 210 and present Low ESR this moment, cause photosensitive unit 220 pressure drops own to diminish, and the pressure drop of variable resistor 232 becomes big, and then makes the gating end ST of power switch circuit 234 present high potential (high) and cause the output OUT of power switch circuit 234 to end.Therefore, the not conducting of coil J of relay makes normal open switch J1 keep normally open, thus hot blast output unit 240 because obtaining AC power AC without any action.
Otherwise, suppose that the user places hand between luminescence unit 210 and the photosensitive unit 220, photosensitive unit 220 just can not receive the light of selfluminous cell 210 and present high impedance this moment, cause photosensitive unit 220 pressure drops own to become big, and the pressure drop of variable resistor 232 diminishes, and then makes the gating end ST of power switch circuit 234 present electronegative potential (low) and cause the output OUT conducting of power switch circuit 234.Therefore, the coil J of relay is energized and conducting, makes normal open switch J1 closure.Thus, hot blast output unit 240 just can obtain AC power AC and begin operation.In the middle of the member of hot blast output unit 240, bridge rectifier 244 is the work of be responsible for to exchange changeing direct current, and with the required power supply of feed motor 248, the polarity of this power supply has been shown among the figure ,+expression just ,-expression is negative.
In example shown in Figure 2, impedance 212 is to be used for carrying out dividing potential drop with luminescence unit 210, and restriction flow to the electric current of luminescence unit 210, and impedance 236 mainly is to be used for producing a pressure drop, to provide power switch circuit 234 required power supply.As for diode 238, it can allow two ends of coil J that one constant pressure drop is arranged when conducting, and stable with the circulating current of keeping coil J guarantees that further normal open switch J1 is in the closed procedure of this moment.Though above-mentioned these three members have been arranged in the circuit shown in Figure 2, yet in fact, the visual practical design of these three members needs and increases and decreases.
In above-mentioned example, the baker circuit also will couple dc source DC except will coupling AC power AC, however following another baker circuit of lifting, its needs couple AC power AC just can carry out identical operation, and side circuit as shown in Figure 3.Certainly, the user can adopt Fig. 2 or design shown in Figure 3 according to the needs of reality.
Fig. 3 is the circuit diagram according to the baker circuit of another embodiment of the utility model.Please be simultaneously with reference to Fig. 2 and Fig. 3, after relatively, can find, in Fig. 3, power track 202 and 204 is not in order to couple dc source DC, and power track 202 is to couple power track 206 through diode 304 and impedance 302, and power track 204 is to see through lead 306 to couple power track 208.Wherein, the anode of diode 304 couples impedance 302, and negative electrode couples power track 202.As for impedance 302, it also realizes with resistance in order to pressure drop to be provided, can determine whether adopt according to practical design.In addition, more than the circuit shown in Figure 3 an electric capacity 308, it is coupled between the negative electrode and power track 204 of diode 304.When power track 206 and 208 coupled AC power AC, diode 304 just carried out halfwave rectifier, and then carried out filtering by electric capacity 308, used for back-end circuit with the power supply that forms the direct current form.
In sum, the utility model adopts luminescence unit, photosensitive unit, relay, control module and hot blast output unit to design the baker circuit, and one of them power input of hot blast output unit is coupled to one the 4th power track, the normal open switch that another power input then sees through relay determines whether being coupled to one the 3rd power track.In addition, also utilize photosensitive unit, and then the coil of driving control unit turn-on relay, make the normal open switch closure of relay in the change in pressure drop of blocking-up under the light source.Thus, as long as the light source of photosensitive unit is blocked, the hot blast output unit just can see through the 3rd power track and the 4th power track couples required power supply, so that send hot blast.Because the baker circuit of this design does not need to carry out the signal conversion, and is therefore simple in structure, related electronic component also seldom, circuit cost is lower.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is worked as with being as the criterion that claim was defined.
Claims (12)
1. a baker circuit is characterized in that, comprising:
One luminescence unit, one end couple one first power track, and the other end couples a second source path;
One photosensitive unit, one end couple this first power track;
One relay has a coil and a normal open switch, and a wherein end of this coil couples this first power track, and a wherein end of this normal open switch couples one the 3rd power track;
One control module couples the other end of this photosensitive unit and the other end of this coil, and determines whether to make this coil conducting according to the pressure drop of this photosensitive unit; And
One hot blast output unit, in order to the output hot blast, this hot blast output unit has one first power input and a second source input, and this first power input couples the other end of this normal open switch, and this second source input couples one the 4th power track.
2. baker circuit as claimed in claim 1 is characterized in that, this control module comprises:
One variable resistor has a resistance first end, a resistance second end and a resistance and picks out end, and this resistance first end couples the other end of this photosensitive unit, and this resistance second end couples this second source path; And
One power switch circuit, have an input, an output, a gating end, power supply input anode and power supply input negative terminal, this input and this power supply input anode all couple this first power track, this power supply input negative terminal couples this second source path, this gating end couples this resistance and picks out end, and this output couples the other end of this coil, and whether this power switch circuit makes this output conducting according to the decision of the voltage on this gating end.
3. baker circuit as claimed in claim 2 is characterized in that, this control module also comprises:
One first impedance, one end couple this first power track, and the other end couples this input and this power supply input anode of this power switch circuit.
4. baker circuit as claimed in claim 2 is characterized in that, this control module also comprises:
One first diode, its anode couple this output of this power switch circuit, and negative electrode couples this first power track.
5. baker circuit as claimed in claim 1 is characterized in that, this hot blast output unit comprises:
One heating wire has a heating wire first end, a heating wire second end and a heating wire and picks out end, and this heating wire first end is as this first power input, and this heating wire second end is as this second source input;
One bridge rectifier has two ac input ends, a power supply output plus terminal and power supply output negative terminal, and above-mentioned two ac input ends couple this heating wire first end respectively and this heating wire picks out end; And
One blower fan has a motor, and this motor couples this power supply output plus terminal and this power supply output negative terminal.
6. baker circuit as claimed in claim 1 is characterized in that, also comprises:
One second impedance is coupled between this luminescence unit and this first power track.
7. baker circuit as claimed in claim 1 is characterized in that this luminescence unit comprises a light emitting diode, and the anode of this light emitting diode couples this first power track, and negative electrode couples this second source path.
8. baker circuit as claimed in claim 1 is characterized in that this photosensitive unit comprises a light sensitive diode, and the anode of this light sensitive diode couples this first power track, and negative electrode couples this control module.
9. baker circuit as claimed in claim 1 is characterized in that, this first power track and this second source path are in order to couple a direct current power supply, and the 3rd power track and the 4th power track are in order to couple an AC power.
10. baker circuit as claimed in claim 1 is characterized in that, also comprises:
One second diode, its anode couples the 3rd power track, and negative electrode couples this first power track;
One lead is coupled between the 4th power track and this second source path; And
One electric capacity is coupled between the negative electrode and this second source path of this second diode.
11. baker circuit as claimed in claim 10 is characterized in that, also comprises:
One the 3rd impedance is coupled between the anode and the 3rd power track of this second diode.
12. baker circuit as claimed in claim 10 is characterized in that, the 3rd power track and the 4th power track are in order to couple an AC power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203117629U CN201123774Y (en) | 2007-12-21 | 2007-12-21 | Drying apparatus circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203117629U CN201123774Y (en) | 2007-12-21 | 2007-12-21 | Drying apparatus circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201123774Y true CN201123774Y (en) | 2008-10-01 |
Family
ID=39997191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203117629U Expired - Fee Related CN201123774Y (en) | 2007-12-21 | 2007-12-21 | Drying apparatus circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201123774Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104257315A (en) * | 2014-09-12 | 2015-01-07 | 成都威邦科技有限公司 | Infrared automatic hand drier circuit |
-
2007
- 2007-12-21 CN CNU2007203117629U patent/CN201123774Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104257315A (en) * | 2014-09-12 | 2015-01-07 | 成都威邦科技有限公司 | Infrared automatic hand drier circuit |
| CN104257315B (en) * | 2014-09-12 | 2016-11-30 | 成都威邦科技有限公司 | A kind of infrared ray automatic hand dryer circuit |
| CN104257315B8 (en) * | 2014-09-12 | 2017-03-22 | 青岛玉兰祥商务服务有限公司 | Infrared automatic hand drier circuit |
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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: 20081001 Termination date: 20121221 |