CN203894584U - Control circuit of air curtain smoke ventilator - Google Patents
Control circuit of air curtain smoke ventilator Download PDFInfo
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- CN203894584U CN203894584U CN201420242594.2U CN201420242594U CN203894584U CN 203894584 U CN203894584 U CN 203894584U CN 201420242594 U CN201420242594 U CN 201420242594U CN 203894584 U CN203894584 U CN 203894584U
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- triode
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- 239000000779 smoke Substances 0.000 title claims abstract description 68
- 239000003990 capacitor Substances 0.000 claims description 28
- 239000006096 absorbing agent Substances 0.000 description 10
- 239000006233 lamp black Substances 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 101100280944 Pisum sativum PETF gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
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Abstract
The utility model discloses a control circuit of an air curtain smoke ventilator. The control circuit comprises a single-chip microcomputer, an oil smoke motor and an air curtain motor, also comprises an oil smoke motor switch circuit, an air curtain motor switch circuit and a first feedback circuit. A voltage input terminal of the oil smoke motor is connected with a direct current power supply through the oil smoke motor switch circuit. A voltage input terminal of the air curtain motor is connected with the direct current power supply through the air curtain motor switch circuit. A control signal input terminal of the oil smoke motor switch circuit and a control signal input terminal of the air curtain motor switch circuit are respectively connected with two control signal output terminals of the single-chip microcomputer. The oil smoke motor is connected with the single-chip microcomputer through the first feedback circuit. According to the control circuit of the air curtain smoke ventilator, the problem that the air curtain smoke ventilator is required to be provided with the control buttons for controlling the oil smoke motor and the air curtain motor is solved, so only one control button is required to control the two motors.
Description
Technical field
The utility model belongs to lampblack absorber technical field, specifically, relates to a kind of wind screen kitchen ventilator control circuit.
Background technology
Wind screen kitchen ventilator, compared with common lampblack absorber, produces air curtain by air curtain apparatus, thereby prevents fumes escaping, improves the smoking effect of lampblack absorber.Such as the disclosed one of Chinese application number 201110162769.X " a kind of air curtain apparatus of lampblack absorber ", this lampblack absorber comprises the Windscreen Fan in the housing that is arranged on lampblack absorber, this blower fan can be arranged on the both sides of lampblack absorber housing, blower fan in this housing provides wind regime for this air curtain apparatus specially, is not the blower fan of lampblack absorber fume-exhausting.Similar this kind is with the general independent control button that arranges of lampblack absorber of air curtain function at present, and for regulating air curtain wind-force size, user in use needs to arrange respectively wind-force and the air curtain wind-force of cooking-fume exhauster blower, uses very inconvenient.
If lampblack absorber has frequency conversion automatic wind speed regulatory function, it is only automatically to regulate for the blower fan of fume-exhausting, and air curtain wind-force, also in requisition for regulating accordingly, matches both duties, if still use button manually to control air curtain wind-force, be relatively difficult to realize.
Summary of the invention
The utility model need to arrange respectively control by the problem of key control oil smoke motor and air curtain motor in order to solve existing wind screen kitchen ventilator, and a kind of wind screen kitchen ventilator control circuit is provided.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of wind screen kitchen ventilator control circuit, comprises single-chip microcomputer, oil smoke motor and air curtain motor, also comprises oil smoke motor switch circuit, air curtain motor switch circuit and the first feedback circuit;
The voltage input end of described oil smoke motor is connected with direct supply by described oil smoke motor switch circuit;
The voltage input end of described air curtain motor is connected with described direct supply by described air curtain motor switch circuit;
Two control signal output terminals of the control signal input end of the control signal input end of described oil smoke motor switch circuit and described air curtain motor switch circuit and described single-chip microcomputer connect one to one;
The input end of described the first feedback circuit is connected with the feedback signal output terminal of described oil smoke motor, and the output terminal of described the first feedback circuit is connected with the feedback signal receiving end of described single-chip microcomputer.
Further, described oil smoke motor switch circuit comprises a NPN type triode (N1) and the first positive-negative-positive triode (P1), the emitter of described the first positive-negative-positive triode (P1) is connected with described direct supply, the collector of described the first positive-negative-positive triode (P1) is connected with the voltage input end of described oil smoke motor, the base stage of a described NPN type triode (N1) is connected with the first control signal output terminal of described single-chip microcomputer, the collector of a described NPN type triode (N1) is connected with the base stage of described the first positive-negative-positive triode (P1) by the first resistance (R1), the emitter of a described NPN type triode (N1) connects earth terminal.
Further, described oil smoke motor switch circuit also comprises the first diode (D1), the anode of described the first diode (D1) is connected with the collector of described the first positive-negative-positive triode (P1), and the negative electrode of described the first diode (D1) is connected with the emitter of described the first positive-negative-positive triode (P1).
Further, between the first described collector of positive-negative-positive triode (P1) and the voltage input end of described oil smoke motor, be also connected with the first inductance (L1).
Further, the first described feedback circuit comprises the 4th resistance (R4) and the 5th resistance (R5), the feedback signal of described oil smoke motor output at high level, and is sent to the first feedback signal receiving end of described single-chip microcomputer through described the 4th resistance (R4) clamper after described the 5th resistance (R5) current limliting.
Further, the first described feedback circuit also comprises the first filter capacitor (C1) and the second filter capacitor (C2), and the two ends of described the 5th resistance (R5) are respectively by described the first filter capacitor (C1) and described the second filter capacitor (C2) ground connection.
Further, described air curtain motor switch circuit comprises the 2nd NPN type triode (N2) and the second positive-negative-positive triode (P2), the emitter of described the second positive-negative-positive triode (P2) is connected with described direct supply, the collector of described the second positive-negative-positive triode (P2) is connected with the voltage input end of described air curtain motor, the base stage of described the 2nd NPN type triode (N2) is connected with the second control signal output terminal of described single-chip microcomputer, the collector of the 2nd NPN type triode (N2) is connected with the base stage of described the second positive-negative-positive triode (P2) by the 6th current-limiting resistance (R6), the emitter of described the 2nd NPN type triode (N2) connects earth terminal, described air curtain motor switch circuit also comprises the second diode (D2), the anode of described the second diode (D2) is connected with the collector of described the second positive-negative-positive triode (P2), the negative electrode of described the second diode (D2) is connected with the emitter of described the second positive-negative-positive triode (P2).
Further, between the second described collector of positive-negative-positive triode (P2) and the voltage input end of described air curtain motor, be also connected with the second inductance (L2).
Further, described wind screen kitchen ventilator control circuit also comprises the second feedback circuit, the second described feedback circuit comprises the 9th resistance (R9) and the tenth resistance (R10), the feedback signal of described air curtain motor output at high level, and is sent to the second feedback signal receiving end of described single-chip microcomputer through described the 9th resistance (R9) clamper after described the tenth resistance (R10) current limliting.
Further, the second described feedback circuit also comprises the 3rd filter capacitor (C3) and the 4th filter capacitor (C4), and the two ends of described the tenth resistance (R10) are respectively by described the 3rd filter capacitor (C3) and described the 4th filter capacitor (C4) ground connection.
Compared with prior art, advantage of the present utility model and good effect are: wind screen kitchen ventilator control circuit of the present utility model, solve wind screen kitchen ventilator and control button need to be set respectively for controlling the problem of oil smoke motor and air curtain motor, a control button only need be set and can realize the control to two motors.
Read by reference to the accompanying drawings after the detailed description of the utility model embodiment, other features of the present utility model and advantage will become clearer.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of embodiment principle schematic of the wind screen kitchen ventilator control circuit that proposes of the utility model;
Fig. 2 is a kind of embodiment circuit theory diagrams of the wind screen kitchen ventilator control circuit that proposes of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-, as shown in Figure 1, is the wind screen kitchen ventilator control circuit of the present embodiment, comprises single-chip microcomputer, oil smoke motor and air curtain motor, also comprises oil smoke motor switch circuit, air curtain motor switch circuit and the first feedback circuit; The voltage input end of oil smoke motor is connected with direct supply by described oil smoke motor switch circuit; The voltage input end of air curtain motor is connected with direct supply by air curtain motor switch circuit; Two control signal output terminals of the control signal input end of the control signal input end of oil smoke motor switch circuit and air curtain motor switch circuit and single-chip microcomputer connect one to one; The input end of described the first feedback circuit is connected with the feedback signal output terminal of described oil smoke motor, and the output terminal of the first feedback circuit is connected with the feedback signal receiving end of described single-chip microcomputer.The principle of work of this control circuit is: Single-chip Controlling sends a control signal to oil smoke motor, realize oil smoke motor wind control, oil smoke motor by the first feedback circuit by its rotating speed Voltage Feedback to single-chip microcomputer, single-chip microcomputer sends control signal according to the rotating speed voltage of oil smoke motor to air curtain motor, control by controlling keying and the wind speed of air curtain motor switch circuit to air curtain motor, without separately for air curtain motor arranges control button.Wherein, the wind control of oil smoke motor can be by arranging control button for oil smoke motor, manual operation key-press input control signal, also can be oil smoke motor frequency conversion automatic wind velocity modulation joint, its rotating speed voltage all can feed back to single-chip microcomputer by the first feedback circuit, and then tackles mutually air curtain motor and control.
As a preferred embodiment, as shown in Figure 2, oil smoke motor switch circuit comprises a NPN type triode N1 and the first positive-negative-positive triode P1, the emitter of the first positive-negative-positive triode P1 is connected with direct supply, the collector of the first positive-negative-positive triode P1 is connected with the voltage input end of oil smoke motor, the base stage of the one NPN type triode N1 is connected with the first control signal output terminal of single-chip microcomputer by the second resistance R 2, wherein the second resistance R 2 plays metering function, in order to protect NPN type triode N1, the second resistance R 2 is not set also can be realized, the collector of the one NPN type triode N1 is connected with the base stage of the first positive-negative-positive triode P1 by the first resistance R 1, the emitter of the one NPN type triode N1 connects earth terminal.The principle of work of this oil smoke motor switch circuit is: single-chip microcomputer is controlled conducting and the shutoff of oil smoke motor and power supply by controlling the folding of two triode N1, P1, in the time that the first control signal output terminal OUT1 of single-chip microcomputer exports high level, conducting between the collector of the one NPN type triode N1, emitter, the base voltage of the first positive-negative-positive triode P1 is dragged down, now conducting between the collector of the first positive-negative-positive triode P1 and emitter, direct supply VDD is added on oil smoke motor by P1, gives the power supply of oil smoke motor; In the time of the first control signal output terminal OUT1 output low level of single-chip microcomputer, a NPN type triode N1 and first all not conductings of positive-negative-positive triode P1, therefore direct supply VDD disconnects to oil smoke motor and powering.Therefore, single-chip microcomputer, by the first control signal output terminal OUT1 output pwm signal, reaches by the dutycycle output that regulates 0,1 signal the object that regulates oil smoke rotation speed of fan.
For prevent oil smoke motor turn-off time produce reverse voltage pour in down a chimney to the collector of the first positive-negative-positive triode P1, cause puncturing between collector and emitter, oil smoke motor switch circuit also comprises the first diode D1, the anode of the first diode D1 is connected with the collector of the first positive-negative-positive triode P1, and the negative electrode of the first diode D1 is connected with the emitter of the first positive-negative-positive triode P1.Therefore pour in down a chimney the emitter that the high level of coming in can input to by the first diode D1 the first positive-negative-positive triode P1, play the effect of effective protection the first positive-negative-positive triode P1.
For filtering interference signals, between the first described collector of positive-negative-positive triode P1 and the voltage input end of oil smoke motor, be also connected with the first inductance L 1, this first inductance L 1 is mixed in the undesired signal of oil smoke motor control signal for filtering.
The present embodiment provides preferably the first feedback circuit structure of one, as shown in Figure 2, the first feedback circuit comprises the 4th resistance R 4 and the 5th resistance R 5, the feedback signal of described oil smoke motor output is through the 4th resistance R 4, wherein, known in those skilled in the art: the 4th resistance R 4 can be by the feedback signal clamper of oil smoke motor output at high level, and be sent to the first feedback signal receiving end FED1 of single-chip microcomputer through the 5th resistance R 5, the 5th resistance R 5 plays metering function too for conventionally known to one of skill in the art in circuit, prevent that large electric current from damaging single-chip microcomputer.This first feedback circuit can feed back to single-chip microcomputer by the input voltage signal of oil smoke motor, owing to reflecting the velocity information of oil smoke motor in input voltage signal, therefore, single-chip microcomputer sends corresponding control command according to this signal to air curtain motor, controls air curtain motor according to the wind speed operation of same wind speed or setting.This first feedback circuit structure is simple, can not bring larger hardware cost to manufacture, and by the signal feedback of feedback circuit, can effectively save user's running program, the wind speed of independent operation setting air curtain motor in addition.
For the clutter in filtering feedback signal, the first described feedback circuit also comprises the first filter capacitor C1 and the second filter capacitor C2, the two ends of described the 5th resistance R 5 are respectively by described the first filter capacitor C1 and described the second filter capacitor C2 ground connection, the first filter capacitor C1 and the second filter capacitor C2 be the clutter in filtered signal effectively, prevents that clutter from causing interference to single-chip microcomputer.
Embodiment bis-, as a preferred embodiment, the present embodiment provides a kind of particular circuit configurations of air curtain motor switch circuit, as shown in Figure 2, air curtain motor switch circuit comprises the 2nd NPN type triode N2 and the second positive-negative-positive triode P2, the emitter of the second positive-negative-positive triode P2 is connected with direct supply, the collector of the second positive-negative-positive triode P2 is connected with the voltage input end of air curtain motor, the base stage of the 2nd NPN type triode N2 is connected with the second control signal output terminal of single-chip microcomputer by the 7th resistance R 7, wherein the 7th resistance R 7 has metering function in this circuit, for the protection of the 2nd NPN type triode N2, the goal of the invention that yet can realize the present embodiment is not set, the collector of the 2nd NPN type triode N2 is connected with the base stage of the second positive-negative-positive triode P2 by the 6th current-limiting resistance R6, the emitter of the 2nd NPN type triode N2 connects earth terminal.The principle of work of the principle of work of this air curtain motor switch circuit and oil smoke motor switch circuit is similar, also: single-chip microcomputer is by controlling two triode N2, conducting and the shutoff of oil smoke motor and power supply controlled in the folding of P2, in the time that the second control signal output terminal OUT2 of single-chip microcomputer exports high level, the collector of the 2nd NPN type triode N2, conducting between emitter, the base voltage of the second positive-negative-positive triode P2 is dragged down, now conducting between the collector of the second positive-negative-positive triode P2 and emitter, direct supply VDD is added on air curtain motor by P2, give the power supply of air curtain motor, in the time of the second control signal output terminal OUT2 output low level of single-chip microcomputer, the 2nd NPN type triode N2 and second all not conductings of positive-negative-positive triode P2, therefore direct supply VDD disconnects to air curtain motor and powering.Therefore, single-chip microcomputer, by the second control signal output terminal OUT2 output pwm signal, reaches by the dutycycle output that regulates 0,1 signal the object that regulates Windscreen Fan rotating speed.The pwm signal that is sent to air curtain motor is to produce according to the input voltage signal of oil smoke motor feedback.
As a same reason, for prevent air curtain motor turn-off time produce reverse voltage pour in down a chimney to the collector of the second positive-negative-positive triode P2, cause puncturing between collector and emitter, air curtain motor switch circuit also comprises the second diode D2, the anode of the second diode D2 is connected with the collector of the second positive-negative-positive triode P2, and the negative electrode of the second diode D2 is connected with the emitter of the second positive-negative-positive triode P2.
In addition,, for filtering interference signals, between the second collector of positive-negative-positive triode P2 and the voltage input end of air curtain motor, be also connected with the second inductance L 2.
The wind screen kitchen ventilator control circuit of the present embodiment also comprises the second feedback circuit, the circuit structure of the second feedback circuit and the first feedback circuit structure are similar, as shown in Figure 1, the second feedback circuit comprises the 9th resistance R 9 and the tenth resistance R 10, the feedback signal of air curtain motor output is through the 9th resistance R 9, those skilled in the art are easy to know that the 9th resistance R 9 can be by the feedback signal clamper of air curtain motor output at high level, and be sent to the second feedback signal receiving end FED2 of single-chip microcomputer through the tenth resistance R 10, the tenth resistance R 10 plays metering function in circuit, can prevent that large electric current from damaging single-chip microcomputer.The effect that this second feedback circuit is set is the input voltage that single-chip microcomputer gathers current air curtain motor, judges that whether the wind speed of air curtain motor is consistent with oil smoke motor, and this second feedback circuit structure is simple, can not bring larger hardware cost to manufacture.
For the clutter in filtering feedback signal, the second feedback circuit also comprises the 3rd filter capacitor C3 and the 4th filter capacitor C4, the two ends of the tenth resistance R 10 are respectively by described the 3rd filter capacitor C3 and described the 4th filter capacitor C4 ground connection, the 3rd filter capacitor C3 and the 4th filter capacitor C4 be the clutter in filtered signal effectively, prevents that clutter from causing interference to single-chip microcomputer.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (10)
1. a wind screen kitchen ventilator control circuit, comprises single-chip microcomputer, oil smoke motor and air curtain motor, it is characterized in that, also comprises oil smoke motor switch circuit, air curtain motor switch circuit and the first feedback circuit;
The voltage input end of described oil smoke motor is connected with direct supply by described oil smoke motor switch circuit;
The voltage input end of described air curtain motor is connected with described direct supply by described air curtain motor switch circuit;
Two control signal output terminals of the control signal input end of the control signal input end of described oil smoke motor switch circuit and described air curtain motor switch circuit and described single-chip microcomputer connect one to one;
The input end of described the first feedback circuit is connected with the feedback signal output terminal of described oil smoke motor, and the output terminal of described the first feedback circuit is connected with the feedback signal receiving end of described single-chip microcomputer.
2. wind screen kitchen ventilator control circuit according to claim 1, is characterised in that, described oil smoke motor switch circuit comprises a NPN type triode (N1) and the first positive-negative-positive triode (P1); The emitter of described the first positive-negative-positive triode (P1) is connected with described direct supply, the collector of described the first positive-negative-positive triode (P1) is connected with the voltage input end of described oil smoke motor, the base stage of a described NPN type triode (N1) is connected with the first control signal output terminal of described single-chip microcomputer, the collector of a described NPN type triode (N1) is connected with the base stage of described the first positive-negative-positive triode (P1) by the first resistance (R1), the grounded emitter of a described NPN type triode (N1).
3. wind screen kitchen ventilator control circuit according to claim 2, be characterised in that, described oil smoke motor switch circuit also comprises the first diode (D1), the anode of described the first diode (D1) is connected with the collector of described the first positive-negative-positive triode (P1), and the negative electrode of described the first diode (D1) is connected with the emitter of described the first positive-negative-positive triode (P1).
4. wind screen kitchen ventilator control circuit according to claim 3, is characterised in that, between the first described collector of positive-negative-positive triode (P1) and the voltage input end of described oil smoke motor, is connected with the first inductance (L1).
5. wind screen kitchen ventilator control circuit according to claim 2, be characterised in that, the first described feedback circuit comprises the 4th resistance (R4) and the 5th resistance (R5), the feedback signal of described oil smoke motor output at high level, and is sent to the first feedback signal receiving end of described single-chip microcomputer through described the 4th resistance (R4) clamper after described the 5th resistance (R5) current limliting.
6. wind screen kitchen ventilator control circuit according to claim 5, be characterised in that, the first described feedback circuit also comprises the first filter capacitor (C1) and the second filter capacitor (C2), and the two ends of described the 5th resistance (R5) are respectively by described the first filter capacitor (C1) and described the second filter capacitor (C2) ground connection.
7. according to the wind screen kitchen ventilator control circuit described in claim 1-6 any one, it is characterized in that, described air curtain motor switch circuit comprises the 2nd NPN type triode (N2) and the second positive-negative-positive triode (P2), the emitter of described the second positive-negative-positive triode (P2) is connected with described direct supply, the collector of described the second positive-negative-positive triode (P2) is connected with the voltage input end of described air curtain motor, the base stage of described the 2nd NPN type triode (N2) is connected with the second control signal output terminal of described single-chip microcomputer, the collector of the 2nd NPN type triode (N2) is connected with the base stage of described the second positive-negative-positive triode (P2) by the 6th current-limiting resistance (R6), the emitter of described the 2nd NPN type triode (N2) connects earth terminal, described air curtain motor switch circuit also comprises the second diode (D2), the anode of described the second diode (D2) is connected with the collector of described the second positive-negative-positive triode (P2), the negative electrode of described the second diode (D2) is connected with the emitter of described the second positive-negative-positive triode (P2).
8. wind screen kitchen ventilator control circuit according to claim 7, is characterized in that, between the second described collector of positive-negative-positive triode (P2) and the voltage input end of described air curtain motor, is connected with the second inductance (L2).
9. wind screen kitchen ventilator control circuit according to claim 8, is characterized in that, described wind screen kitchen ventilator control circuit also comprises the second feedback circuit, and described the second feedback circuit comprises the 9th resistance (R9) and the tenth resistance (R10); The feedback signal of described air curtain motor output at high level, and is sent to the second feedback signal receiving end of described single-chip microcomputer through described the 9th resistance (R9) clamper after described the tenth resistance (R10) current limliting.
10. wind screen kitchen ventilator control circuit according to claim 9, it is characterized in that, the second described feedback circuit also comprises the 3rd filter capacitor (C3) and the 4th filter capacitor (C4), and the two ends of described the tenth resistance (R10) are respectively by described the 3rd filter capacitor (C3) and described the 4th filter capacitor (C4) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242594.2U CN203894584U (en) | 2014-05-13 | 2014-05-13 | Control circuit of air curtain smoke ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242594.2U CN203894584U (en) | 2014-05-13 | 2014-05-13 | Control circuit of air curtain smoke ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894584U true CN203894584U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420242594.2U Expired - Lifetime CN203894584U (en) | 2014-05-13 | 2014-05-13 | Control circuit of air curtain smoke ventilator |
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| Country | Link |
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| CN (1) | CN203894584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039875A (en) * | 2017-11-29 | 2018-05-15 | 青岛海尔科技有限公司 | A kind of control circuit of refrigerator ozone generator |
| CN109991890A (en) * | 2017-12-29 | 2019-07-09 | 深圳市优必选科技有限公司 | Prevent steering wheel system circuit and robot that discharges |
-
2014
- 2014-05-13 CN CN201420242594.2U patent/CN203894584U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039875A (en) * | 2017-11-29 | 2018-05-15 | 青岛海尔科技有限公司 | A kind of control circuit of refrigerator ozone generator |
| CN109991890A (en) * | 2017-12-29 | 2019-07-09 | 深圳市优必选科技有限公司 | Prevent steering wheel system circuit and robot that discharges |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20141022 |