CN202714781U - Novel light-operated automatic hand drier - Google Patents
Novel light-operated automatic hand drier Download PDFInfo
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- CN202714781U CN202714781U CN 201220238973 CN201220238973U CN202714781U CN 202714781 U CN202714781 U CN 202714781U CN 201220238973 CN201220238973 CN 201220238973 CN 201220238973 U CN201220238973 U CN 201220238973U CN 202714781 U CN202714781 U CN 202714781U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000002457 bidirectional effect Effects 0.000 claims description 17
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000010349 pulsation Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The utility model relates to a novel light-operated automatic hand dryer, including housing and the base of being connected with the housing, install heating element in the housing, fan and control circuit, the fan is located heating element upper portion, the lower part that the base is located heating element is equipped with the air outlet, be equipped with the light trap that is used for infrared ray receiving to send out and receive on base or the housing, control circuit is including the power supply circuit who connects gradually, comparison circuit and amplifier circuit and drive circuit, power supply circuit is including connecting step-down circuit and the signal reception circuit and the rectifier circuit at external power supply phase line. The utility model discloses can directly adopt 50Hz pulsation DC power supply to give the power supply of transmission photoelectric tube, it is rational in infrastructure to have, can prevent the interference of other light sources, simplifies the circuit, and is small, characteristics that can reduce cost.
Description
Technical field
The utility model relates to a kind of Novel light-operated automatic hand dryer, belongs to the electric dryer technical field.
Background technology
The light-operated automatic hand dryer that uses at present adopts emission more---receive the mode of photoelectric tube.When staff or object proximity automatic hand dryer light inlet window are arranged, the infrared ray that emission phototube sends reflexes to the reception photoelectric tube through staff or object, receive the optical signal that photoelectric tube receives reflection, be converted to the signal of telecommunication through amplification, shaping, extract human body and go out approaching signal, through the action of overdrive circuit control high-power silicon controlled rectifier, power supply is provided for heater element and fan.Offer the power supply of photoemission cell common usually have two kinds: a kind of employing dc source is to heater element and fan power supply, and this mode circuit is simple, and cost is low, but can produce misoperation to jamming light source, and fully out of control under the high light, functional reliability is poor.In order to address this problem, also have a kind of with the high frequency electric source group heater element after the modulation and fan power supply, the signal that photoelectric receiving tube receives after the modulation is further decoded, extract the human body close signal, effectively got rid of the problem that jamming light source is brought, but circuit is complicated, cost is high, volume is large, and the installation site is restricted, brings inconvenience to application.
Summary of the invention
The purpose of this utility model provides a kind of rational in infrastructure, can prevent the interference of other light source, simplifies circuit, and volume is little, can reduce the Novel light-operated automatic hand dryer of cost.
The utility model is that the technical scheme that achieves the above object is: a kind of Novel light-operated automatic hand dryer, comprise case and the base that is connected with case, heater element is installed in the case, fan and control circuit, fan is positioned at heater element top, the bottom that base is positioned at heater element is provided with air outlet, base or case are provided with the light inlet window of receiving for the infrared ray sending and receiving, it is characterized in that: described control circuit comprises the power circuit that connects successively, comparison circuit and amplifying circuit and drive circuit, described power circuit comprises reduction voltage circuit and signal receiving circuit and the rectification circuit that is connected on the external power supply phase line, reduction voltage circuit comprises resistance R 1 and capacitor C 1 in parallel, be connected in series with emission phototube D2 by resistance R 3 and consist of signal receiving circuit and be connected between reduction voltage circuit and the external power source zero line, rectification circuit comprises rectifier bridge DB, resistance R 2, voltage-stabiliser tube D1 and capacitor C 2, C3, the input of rectifier bridge DB is connected between reduction voltage circuit and the external power source zero line, and the output of rectifier bridge DB connects the parallel branch of voltage-stabiliser tube D1 and capacitor C 2 and C3 through resistance R 2; Described comparison circuit comprises reception photoelectric tube D3, capacitor C 4 and resistance R 6, R7 and amplifier IC1-1, the series arm and the amplifier IC1-1 that receive series arm, resistance R 6 and the R7 of photoelectric tube D3 and resistance R 4 are connected on respectively between the power positive cathode, receive photoelectric tube D3 and connect the normal phase input end of amplifier IC1-1 through capacitor C 4, resistance R 6 and the node of R7 connect the inverting input of amplifier IC1; Described amplifying circuit comprises resistance R 8, R10, R11, R12 and diode D4 and amplifier IC1-2, the normal phase input end that the output of amplifier IC1-1 meets amplifier IC1-2 through resistance R 8 and the diode D4 of serial connection, resistance R 10 and R11 connect between the power positive cathode and its node connects the inverting input of amplifier IC1-2, and resistance R 12 is connected between the normal phase input end and output of amplifier IC1-2; Described drive circuit comprises resistance R 13 and bidirectional triode thyristor T1, amplifier IC1-2 output connects the control pin 3 of bidirectional triode thyristor T1 by resistance R 13, bidirectional triode thyristor T1 leading foot 1 connects power cathode, the leading foot 2 of bidirectional triode thyristor T1 is connected with the external power source phase line through heater element RT1, and fan electromotor M is in parallel with heater element RT1.
The power circuit of the utility model control circuit adopts reduction voltage circuit, signal receiving circuit and rectification circuit, can directly adopt 220V, the alternating current of 50Hz, improve working power behind reduction voltage circuit, for respectively signal receiving circuit and rectification circuit, one the tunnel makes the emission phototube normal operation, another road is through the rectification of rectification circuit, filtering, voltage stabilizing provides dc source to device, the utility model utilizes the unilateral conduction of emission phototube, make it luminous in the positive half cycle conducting that exchanges the 50Hz power supply, therefore can directly adopt the 50Hz Voltage pulsating direct-current supply to power to emission phototube, receiving photoelectric tube receives the pulsation infrared light of 50Hz and changes into the 50Hz pulsed electrical signal, by comparison circuit and amplifying circuit pulsed electrical signal is amplified, level and smooth shaping, directly control bidirectional triode thyristor conducting or cut-off state through drive circuit again, power supply is provided for heater element and fan electromotor, the utility model has been cancelled power transformer, rational in infrastructure, reduce cost, weight reduction, simultaneously because circuit working is at accurate exchange status, though the jamming light source that slowly changes receives through receiving photoelectric tube, but can be completely cut off by capacitor C 4, can effectively prevent the interference of other light source, so available 50Hz power supply substitutes the modulation-demodulation circuit, circuit is simplified, the hand dryer volume is little, can reduce cost.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation of the light-operated automatic hand dryer of the utility model.
Fig. 2 is the electrical schematic diagram of the utility model control circuit.
Wherein: 1-case, 2-base, 2-1-air outlet, 2-2-light inlet window, 3-heater element, 4-fan, 5-circuit board, 6-power line.
The specific embodiment
As shown in Figure 1, Novel light-operated automatic hand dryer of the present utility model, comprise case 1 and the base 2 that is connected with case 1, heater element 3 is installed in the case 1, fan 4 and control circuit, fan 4 is positioned at heater element 3 tops, the bottom that base 2 is positioned at heater element 3 is provided with air outlet 2-1, base 2 or case 1 are provided with the light inlet window 2-2 that receives for the infrared ray sending and receiving, circuit board 5 is installed on the base 2, control circuit is installed on the base 2, control circuit connects the alternating current of outside 220V by power line 6, can suitably increase and decrease radiator area according to the power needs of heater element 3, heater element 3 of the present utility model can adopt PTC device or heating wire etc., and fan 4 can adopt drum-type, light inlet window 2-2 can make of red transparent organic glass, and emission phototube D2 and reception photoelectric tube D3 are arranged on light inlet window 2-2 one side of base 2 or light inlet window 2-2 one side of case 1.
As shown in Figure 2, the utility model control circuit comprises power circuit, comparison circuit and amplifying circuit and the drive circuit that connects successively.As shown in Figure 2, power circuit of the present utility model comprises reduction voltage circuit and signal receiving circuit and the rectification circuit that is connected on the external power supply phase line, reduction voltage circuit comprises resistance R 1 and capacitor C 1 in parallel, can adopt the alternating current of 220V, namely the alternating current of 220V is carried out step-down by the reduction voltage circuit external power source, working power is provided for signal receiving circuit and rectification circuit, be connected in series with emission phototube D2 by resistance R 3 and consist of signal receiving circuit and be connected between reduction voltage circuit and the external power source zero line, receive external signal by emission phototube D2, when the positive half cycle of power supply, send 50Hz pulsation infrared light, to be converted to the 50Hz pulsed electrical signal.Rectification circuit of the present utility model comprises rectifier bridge DB, resistance R 2, voltage-stabiliser tube D1 and capacitor C 2, C3, the input of rectifier bridge DB is connected between reduction voltage circuit and the external power source zero line, the output of rectifier bridge DB connects the parallel branch of voltage-stabiliser tube D1 and capacitor C 2 and C3 through resistance R 2, after rectification, filtering and voltage stabilizing, obtain low-voltage dc power supply, and give each device power supply.
As shown in Figure 2, comparison circuit of the present utility model comprises reception photoelectric tube D3, capacitor C 4 and resistance R 6, R7 and amplifier IC1-1, the series arm and the amplifier IC1-1 that receive series arm, resistance R 6 and the R7 of photoelectric tube D3 and resistance R 4 are connected on respectively between the power positive cathode, receive photoelectric tube D3 meets amplifier IC1-1 through capacitor C 4 normal phase input end, the node of resistance R 6 and R7 connects the inverting input of amplifier IC1, also have resistance R 5 in the comparison circuit, resistance R 5 is connected between the normal phase input end and power cathode of amplifier IC1-1.Receive the pulsation infrared light of 50Hz by receiving photoelectric tube D3, being converted to the 50Hz pulsed electrical signal, and relatively amplified by the positive input terminal that capacitor C 4 is coupled to amplifier IC1-1, isolate by 4 pairs of outside jamming light source of capacitor C.
As shown in Figure 2, amplifying circuit of the present utility model comprises resistance R 8, R10, R11, R12 and diode D4 and amplifier IC1-2, the normal phase input end that the output of amplifier IC1-1 meets amplifier IC1-2 through resistance R 8 and the diode D4 of serial connection, resistance R 10 and R11 connect between the power positive cathode and its node connects the inverting input of amplifier IC1-2, and resistance R 12 is connected between the normal phase input end and output of amplifier IC1-2.The utility model also has resistance R 9 and capacitor C 5 and C6 in amplifying circuit, the parallel branch of resistance R 9 and capacitor C 5 is connected between the negative pole and power cathode of diode D4, be connected to capacitor C 6 between the reversed-phase output of amplifier IC1-2 and the output, the signal after relatively amplifying is further amplified and triggering bidirectional triode thyristor T1 conducting or cut-off after level and smooth shaping.
As shown in Figure 2, drive circuit of the present utility model comprises resistance R 13 and bidirectional triode thyristor T1, bidirectional triode thyristor T1 can adopt the great power bidirectional controllable silicon, amplifier IC1-2 output connects the control pin 3 of bidirectional triode thyristor T1 by resistance R 13, bidirectional triode thyristor T1 leading foot 1 connects power cathode, the leading foot 2 of bidirectional triode thyristor T1 is connected with the external power source phase line through heater element RT1, and fan electromotor M1 is in parallel with heater element RT1.
As shown in Figure 2, during the work of the utility model hand dryer, external power source 220V is after the reduction voltage circuit step-down, one the tunnel offers emission phototube D2 as operating current after resistance R 3 current limlitings, because its unilateral conduction is only luminous when the positive half cycle of power supply, send 50Hz pulsation infrared light.Another road obtains low-voltage dc power supply after rectification circuit rectification, filtering and voltage stabilizing, give relevant electric power supply.When staff is arranged near automatic hand dryer, emission phototube D2 sends the pulsation infrared light and receives photoelectric tube D3 reception and be converted to the 50Hz pulsed electrical signal through reflection quilt, the normal phase input end that is coupled to amplifier IC1-1 by capacitor C 4 amplifies, and drives bidirectional triode thyristor T1 through offering amplifier IC1-2 after resistance R 8 and the diode D4 shaping and connects heater element RT1 and fan electromotor M1.
Claims (4)
1. Novel light-operated automatic hand dryer, comprise case and the base that is connected with case, heater element is installed in the case, fan and control circuit, fan is positioned at heater element top, the bottom that base is positioned at heater element is provided with air outlet, base or case are provided with the light inlet window of receiving for the infrared ray sending and receiving, it is characterized in that: described control circuit comprises the power circuit that connects successively, comparison circuit and amplifying circuit and drive circuit, described power circuit comprises reduction voltage circuit and signal receiving circuit and the rectification circuit that is connected on the external power supply phase line, reduction voltage circuit comprises resistance R 1 and capacitor C 1 in parallel, be connected in series with emission phototube D2 by resistance R 3 and consist of signal receiving circuit and be connected between reduction voltage circuit and the external power source zero line, rectification circuit comprises rectifier bridge DB, resistance R 2, voltage-stabiliser tube D1 and capacitor C 2, C3, the input of rectifier bridge DB is connected between reduction voltage circuit and the external power source zero line, and the output of rectifier bridge DB connects the parallel branch of voltage-stabiliser tube D1 and capacitor C 2 and C3 through resistance R 2; Described comparison circuit comprises reception photoelectric tube D3, capacitor C 4 and resistance R 6, R7 and amplifier IC1-1, the series arm and the amplifier IC1-1 that receive series arm, resistance R 6 and the R7 of photoelectric tube D3 and resistance R 4 are connected on respectively between the power positive cathode, receive photoelectric tube D3 and connect the normal phase input end of amplifier IC1-1 through capacitor C 4, resistance R 6 and the node of R7 connect the inverting input of amplifier IC1; Described amplifying circuit comprises resistance R 8, R10, R11, R12 and diode D4 and amplifier IC1-2, the normal phase input end that the output of amplifier IC1-1 meets amplifier IC1-2 through resistance R 8 and the diode D4 of serial connection, resistance R 10 and R11 connect between the power positive cathode and its node connects the inverting input of amplifier IC1-2, and resistance R 12 is connected between the normal phase input end and output of amplifier IC1-2; Described drive circuit comprises resistance R 13 and bidirectional triode thyristor T1, amplifier IC1-2 output connects the control pin 3 of bidirectional triode thyristor T1 by resistance R 13, bidirectional triode thyristor T1 leading foot 1 connects power cathode, the leading foot 2 of bidirectional triode thyristor T1 is connected with the external power source phase line through heater element RT1, and fan electromotor M is in parallel with heater element RT1.
2. Novel light-operated automatic hand dryer according to claim 1, it is characterized in that: also have resistance R 5 in the described comparison circuit, resistance R 5 is connected between the normal phase input end and power cathode of amplifier IC1-1.
3. Novel light-operated automatic hand dryer according to claim 1, it is characterized in that: also have resistance R 9 and capacitor C 5 and C6 in the described amplifying circuit, the parallel branch of resistance R 9 and capacitor C 5 is connected between the negative pole and power cathode of diode D4, is connected to capacitor C 6 between the reversed-phase output of amplifier IC1-2 and the output.
4. Novel light-operated automatic hand dryer according to claim 1, it is characterized in that: described heater members can adopt PTC device or heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238973 CN202714781U (en) | 2012-05-25 | 2012-05-25 | Novel light-operated automatic hand drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238973 CN202714781U (en) | 2012-05-25 | 2012-05-25 | Novel light-operated automatic hand drier |
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| Publication Number | Publication Date |
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| CN202714781U true CN202714781U (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220238973 Expired - Fee Related CN202714781U (en) | 2012-05-25 | 2012-05-25 | Novel light-operated automatic hand drier |
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| CN (1) | CN202714781U (en) |
Cited By (6)
| 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 |
| CN105147171A (en) * | 2015-10-21 | 2015-12-16 | 周云侠 | Infrared light-controlled hand drying device |
| CN105147173A (en) * | 2015-10-24 | 2015-12-16 | 黄月华 | Hand induction type hand drier |
| CN105147172A (en) * | 2015-10-22 | 2015-12-16 | 周云侠 | Infrared light-controlled hand drying device |
| CN105167695A (en) * | 2015-10-21 | 2015-12-23 | 黄月华 | Automatic infrared hand drier |
| CN105231973A (en) * | 2015-11-02 | 2016-01-13 | 黄月华 | Foot induction type shoe shining machine |
-
2012
- 2012-05-25 CN CN 201220238973 patent/CN202714781U/en not_active Expired - Fee Related
Cited By (8)
| 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 |
| CN105147171A (en) * | 2015-10-21 | 2015-12-16 | 周云侠 | Infrared light-controlled hand drying device |
| CN105167695A (en) * | 2015-10-21 | 2015-12-23 | 黄月华 | Automatic infrared hand drier |
| CN105147172A (en) * | 2015-10-22 | 2015-12-16 | 周云侠 | Infrared light-controlled hand drying device |
| CN105147173A (en) * | 2015-10-24 | 2015-12-16 | 黄月华 | Hand induction type hand drier |
| CN105231973A (en) * | 2015-11-02 | 2016-01-13 | 黄月华 | Foot induction type shoe shining machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20150525 |
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| EXPY | Termination of patent right or utility model |