CN211713475U

CN211713475U - Steam ironing device suitable for wide voltage

Info

Publication number: CN211713475U
Application number: CN201922041755.7U
Authority: CN
Inventors: 周祥勋; 吕宗权; 郑燕雄
Original assignee: NINGBO AIJIA ELECTRICAL APPLIANCE CO Ltd
Current assignee: NINGBO AIJIA ELECTRICAL APPLIANCE CO Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-10-20
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to a steam ironing device adapting to wide voltage, which comprises a steam generating unit and a control circuit board electrically connected with the steam generating unit, wherein the steam generating unit comprises a power supply connector, a temperature control switch, a heating element and a voltage reduction diode which are connected in series between two power supply electrodes of the power supply connector; the control circuit board comprises a voltage sampling unit, a connection state switching unit and a controller, wherein the connection state switching unit is used for switching the connection state of the buck diode, the voltage sampling unit is electrically connected between the power supply connector and the sampling end of the controller, and the connection state switching unit is electrically connected with the controller and electrically connected with the two ends of the buck diode. The steam ironing equipment suitable for the wide voltage is low in cost, heating elements can be fully utilized, and generated steam is more uniform.

Description

Steam ironing device suitable for wide voltage

Technical Field

The utility model relates to a steam ironing device of wide voltage of adaptation.

Background

At present, steam ironing products similar to electric irons, handheld garment blanchers and the like in the market are generally applicable to one voltage when in use, namely circuit boards in the products cannot effectively realize wide-voltage use, standard power utilization voltages of different countries are different, and the products are difficult to carry and use when traveling. Therefore, a product suitable for wide voltage operation is urgently needed to meet the market demand, namely, the product can realize normal operation at low voltage and high voltage.

In order to meet the market demand, a product capable of manually switching the use voltage is available in the market, and the use demand of the product under different voltages is met by switching between low voltage and high voltage through a mechanical switch. The product has the obvious disadvantage of being not intelligent enough, and if a consumer forgets to do correct voltage switching before using the product, the product works under incorrect voltage, the service performance and safety performance of the product are influenced, and more serious life and property safety can be caused.

Chinese patent application No. CN108662572A (application No. 201810602285.4) discloses a wide voltage-adaptive steam vaporization mechanism, which can automatically determine whether an input voltage is a low voltage or a high voltage, so as to control a low-voltage electric heating element to operate when the low voltage is input, and control a high-voltage electric heating element to operate when the high voltage is input, so as to realize normal operation of a product in a wide voltage state. When the steam vaporization mechanism with the structure works, only one electric heating element works, and the other electric heating element is in an idle state, but two electric heating elements are required to be arranged in a product, so that the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an homoenergetic is guaranteed to generate heat components and parts and is in operating condition at wide voltage range to above-mentioned prior art provides, avoids appearing idle components and parts that generate heat, and then reduces product cost's the wide voltage's of adaptation steam ironing device.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a adapt to wide voltage's steam ironing device, includes steam generation unit and the control circuit board who is connected with steam generation unit electricity, its characterized in that: the steam generating unit comprises a power supply connector, a temperature control switch, a heating element and a voltage reduction diode, wherein the temperature control switch, the heating element and the voltage reduction diode are connected between two power supply electrodes of the power supply connector in series;

the control circuit board comprises a voltage sampling unit, a connection state switching unit and a controller, wherein the connection state switching unit is used for switching the connection state of the buck diode, the voltage sampling unit is electrically connected between the power connector and the sampling end of the controller, and the connection state switching unit is electrically connected with the controller and electrically connected with the two ends of the buck diode.

Simply, the connection state switching unit includes a relay, both ends of a coil of the relay are electrically connected with the signal output terminal of the controller, and both ends of a switch of the relay are electrically connected with the step-down diode.

Preferably, the control circuit board further comprises a controller power supply unit and a driving unit, the controller power supply unit is electrically connected with the power connector and the controller respectively, and the driving unit is electrically connected with the controller and the coil of the relay respectively.

Preferably, the voltage sampling unit comprises a third diode, a fourth resistor, a fifth resistor and a third capacitor, the third diode and the fourth resistor are connected in series between the anode of the power supply connector and the sampling end of the controller, the cathode of the third diode is electrically connected with the fourth resistor, and the fifth resistor and the third capacitor are connected in parallel between the cathode of the power supply connector and the sampling end of the controller.

Preferably, the controller power supply unit includes a voltage reduction circuit, a rectification circuit, a filter circuit and a voltage reduction and voltage stabilization circuit, the voltage reduction circuit includes a first resistor, a second resistor, a third resistor and a first capacitor, the rectification circuit includes a first diode and a second diode, the filter circuit includes a second capacitor, and the voltage reduction and voltage stabilization circuit includes a sixth resistor voltage stabilization diode, a fourth capacitor and a fifth capacitor;

the first resistor, the second resistor, the third resistor, the first diode and the second capacitor are sequentially connected in series between the anode and the cathode of the power supply connector, the first capacitor is connected in parallel with the second resistor and the third resistor after being connected in series, and the second diode is connected in parallel with the first diode and the second capacitor after being connected in series; the anode of the second diode is electrically connected with the cathode of the power supply connector, the cathode of the second diode is electrically connected with the anode of the first diode, and the cathode of the first diode is electrically connected with the anode of the second capacitor;

the voltage stabilizing diode, the fourth capacitor and the fifth capacitor are connected in parallel, one end of the sixth resistor is electrically connected with the anode of the second capacitor, the other end of the sixth resistor is electrically connected with the cathode of the voltage stabilizing diode, the anode of the fourth capacitor and one electrode of the fifth capacitor, the anode of the voltage stabilizing diode, the cathode of the fourth capacitor and the other electrode of the fifth capacitor are electrically connected with the cathode of the power supply connector, and the power supply section of the controller is electrically connected with the anode of the fourth capacitor.

Preferably, the driving unit includes a seventh resistor, a triode and a fourth diode, wherein one end of the seventh resistor is electrically connected with the driving signal output end of the controller, the other end of the seventh resistor is electrically connected with the base of the triode, the collector of the triode is electrically connected with the anode of the fourth diode, the emitter of the triode is electrically connected with the cathode of the power connector, the cathode of the fourth diode is electrically connected with the anode of the power connector, and two ends of the coil of the relay are electrically connected with two ends of the fourth diode.

Compared with the prior art, the utility model has the advantages of: the utility model provides a steam ironing device of wide voltage of adaptation utilizes the voltage sampling unit among the control circuit board can detect supply voltage's the condition, and then the automatic control connection state switching unit action, and then realizes the control whether to the short circuit of step-down diode. So under the high voltage condition for heating element and device and step-down diode are the tandem state, and step-down diode's one-way conduction performance can carry out the half-wave to the high voltage and handle, falls to half magnitude of voltage with the high voltage, makes heating element and device can work under normal low-voltage condition. And this adapt to wide voltage's steam ironing device only need use a heating element and part, has reduced the components and parts cost, guarantees simultaneously that heating element and part is in operating condition all the time at the course of the work for heating element and part can obtain abundant utilization. And a heating element is conveniently arranged on the product, so that the uniformity of water vapor generated by the steam generator is improved.

Drawings

Fig. 1 is a schematic circuit diagram of a steam ironing device adapted to a wide voltage in an embodiment of the present invention.

Fig. 2 is a circuit diagram of a steam ironing device adapted to a wide voltage in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The utility model provides a wide voltage's of adaptation steam ironing device can use in various products that need steam generator, if can use on products such as garment steamer, electric iron. Especially when the device is applied to products such as a garment steamer and an electric iron, the uniformity of the wiring of the heating element for generating heat directly influences the ironing effect, and the excessive deviation of the area of the product generating high-temperature steam is required to be avoided.

The steam ironing device suitable for wide voltage in the embodiment comprises a steam generating unit and a control circuit board electrically connected with the steam generating unit, wherein the steam generating unit works under the control of the control circuit board.

As shown in fig. 1 and 2, the steam generating unit includes a power supply connector, and a temperature controlled switch 1, a heating element 2, and a voltage reducing diode 3 connected in series between the positive pole and the negative pole of the power supply connector, wherein the positive pole of the voltage reducing diode 3 is electrically connected to the heating element 2, and the negative pole of the voltage reducing diode 3 is electrically connected to the negative pole of the power supply connector. During the use is used power connection grafting in the power supply picture peg, and temperature detect switch 1 mainly used controls the operating temperature of this steam generator during operation, and during the use, the user adjusts temperature detect switch 1 as required, and then adjusts heating element 2's operating power, realizes the adjustment to using this steam generator operating temperature.

The control circuit board comprises a voltage sampling unit 4 for sampling the size of power supply voltage, a connection state switching unit 5 for switching the conduction state of the buck diode 3, a controller power supply unit 6 for supplying power to the controller and a driving unit 7 for driving the connection state switching unit 5 to act, wherein the voltage sampling unit 4 is electrically connected with a power supply connector, the connection state switching unit 5 is respectively electrically connected with the first heating element 2 and the second heating element 3, and the controller is respectively electrically connected with the voltage sampling unit 4 and the connection state switching unit 5. The controller power supply unit 6 is electrically connected with the power connector and the controller, and the driving unit 7 is electrically connected with the controller and the connection state switching unit 5.

Specifically, the voltage sampling unit 4 includes a third diode D3, a fourth resistor R4, a fifth resistor R5 and a third capacitor C3, the third diode D3 and the fourth resistor R4 are connected in series between the anode L of the power connector and the sampling end of the controller, the cathode of the third diode D3 is electrically connected with the fourth resistor R4, and the fifth resistor R5 and the third capacitor C3 are connected in parallel between the cathode N of the power connector and the sampling end of the controller. The voltage sampling unit 4 can generate a 2V-5V direct current voltage when the power supply connector is connected with a 94V-264V power supply, and the direct current voltage is processed by the analog-to-digital conversion of the controller and then is used as the basis for the switching operation of the connection state switching unit 5.

The connection state switching unit 5 in the present embodiment includes a relay J1, both ends of a coil of the relay J1 are electrically connected to the signal output terminal of the controller, and both ends of a switch of the relay J1 are electrically connected to the step-down diode 3.

The controller power supply unit 6 comprises a voltage reduction circuit 61, a rectifying circuit 62, a filter circuit 63 and a voltage reduction and stabilization circuit 64, the voltage reduction circuit 61 comprises a first resistor R1, a second resistor R2, a third resistor R3 and a first capacitor C1, and further forms the resistance-capacitance voltage reduction circuit 61, the rectifying circuit 62 comprises a first diode D1 and a second diode D2, and further forms the half-wave rectifying circuit 62, the filter circuit 63 comprises a second capacitor C2, the voltage reduction and stabilization circuit 64 comprises a sixth resistor R6 voltage stabilization diode ZD1, a fourth capacitor C4 and a fifth capacitor C5.

The first resistor R1, the second resistor R2, the third resistor R3, the first diode D1 and the second capacitor C2 are sequentially connected in series between the anode L and the cathode N of the power supply connector, the first capacitor C1 is connected in parallel with the second resistor R2 and the third resistor R3 after being connected in series, and the second diode D2 is connected in parallel with the first diode D1 and the second capacitor C2 after being connected in series; the anode of the second diode D2 is electrically connected with the cathode N of the power supply connector, the cathode of the second diode D2 is electrically connected with the anode of the first diode D1, and the cathode of the first diode D1 is electrically connected with the anode of the second capacitor C2;

a zener diode ZD1, a fourth capacitor C4 and a fifth capacitor C5 are connected in parallel, one end of a sixth resistor is electrically connected with the positive electrode of the second capacitor C2, the other end of the sixth resistor is electrically connected with the negative electrode of the zener diode ZD1, the positive electrode of the fourth capacitor C4 and one electrode of the fifth capacitor C5, the positive electrode of the zener diode ZD1, the negative electrode of the fourth capacitor C4 and the other electrode of the fifth capacitor C5 are electrically connected with the negative electrode N of the power supply connector, and the power supply section of the controller is electrically connected with the positive electrode of the fourth capacitor C4.

The controller power supply unit 6 can generate a stable dc voltage of about 100V at two ends of the second capacitor C2 after the ac voltage of 94V-264V and 50/60HZ connected to the power connector is subjected to voltage reduction and rectification, and the stable dc voltage of about 100V is subjected to voltage reduction by the sixth resistor and then regulated to 5V by the zener diode ZD1, the fourth capacitor C4 and the fifth capacitor C5, thereby providing a working voltage for the controller.

The driving unit 7 comprises a seventh resistor R7, a transistor Q1 and a fourth diode D4, wherein one end of the seventh resistor R7 is electrically connected with a driving signal output end of the controller, the other end of the seventh resistor R7 is electrically connected with a base electrode of the transistor Q1, a collector electrode of the transistor Q1 is electrically connected with an anode electrode of the fourth diode D4, an emitter electrode of the transistor Q1 is electrically connected with a cathode electrode N of the power connector, a cathode electrode of the fourth diode D4 is electrically connected with an anode electrode L of the power connector, and a coil of the relay J1 is electrically connected with two ends of the fourth diode D4. This drive unit 7 drives relay J1's switch under the control of controller and opens and the closure action, and then makes step-down diode 3 be in with heating element and device 2 series connection or the state of short circuit to guarantee that heating element and device 2 carries out normal work under the supply voltage of difference, guarantee safe in utilization.

The working process of the steam ironing device adapting to the wide voltage comprises the following steps: when the voltage that the power provided is high voltage, voltage sampling unit 4 gathers and acquires high voltage signal and then conveys to the controller, and the controller is in the open state through drive unit 7 control relay J1's switch, makes heating element and device 2 and step-down diode 3 be in the series connection state and carry out work. At this time, half-wave processing can be performed on the high voltage under the unidirectional conduction action of the step-down diode 3, and the high voltage is reduced to a half voltage value, so that the heating component can work in a normal low-voltage state.

When the voltage that the power provided was the low-voltage, voltage sampling unit 4 gathered and acquireed the low-voltage signal and then sent the controller to, and the controller passes through drive unit 7 control relay J1's switch closure, and then makes step-down diode 3 be in short circuit state, and the components and parts that generate heat can normally work under the low-voltage that the power provided this moment.

This adapt to wide voltage's steam ironing device utilizes the condition that voltage sampling unit 4 in the control circuit board can detect supply voltage, and then the action of automatic control connection state switching unit 5, and then realizes the control whether short circuit to step-down diode 3. So under the high voltage condition for heating element and device 2 is the tandem state with step-down diode 3, and step-down diode 3's one-way conduction performance can carry out the half-wave to the high voltage and handle, falls to half the magnitude of voltage with the high voltage, makes heating element and device 2 can work under normal low-voltage condition. And this adapt to wide voltage's steam ironing device only need use one heating element and device 2, has reduced the components and devices cost, guarantees simultaneously that heating element and device 2 is in operating condition all the time in the course of the work for heating element and device can obtain abundant utilization. And a heating element 2 is conveniently arranged on the product, so that the uniformity of water vapor generated by the steam generator is improved.

Claims

1. The utility model provides a adapt to wide voltage's steam ironing device, includes steam generation unit and the control circuit board who is connected with steam generation unit electricity, its characterized in that: the steam generation unit comprises a power supply connector, a temperature control switch (1), a heating element (2) and a voltage reduction diode (3), wherein the temperature control switch, the heating element and the voltage reduction diode are connected between two power supply electrodes of the power supply connector in series;

the control circuit board comprises a voltage sampling unit (4), a connection state switching unit (5) and a controller, wherein the connection state switching unit (5) is used for switching the connection state of the buck diode (3), the voltage sampling unit (4) is electrically connected between a power supply connector and the sampling end of the controller, and the connection state switching unit (5) is electrically connected with the controller and is electrically connected with the two ends of the buck diode (3).

2. Steam ironing device according to claim 1, characterized in that: the connection state switching unit (5) comprises a relay (J1), two ends of a coil of the relay (J1) are electrically connected with a signal output end of the controller, and two ends of a switch of the relay (J1) are electrically connected with the step-down diode (3).

3. Steam ironing device according to claim 2, characterized in that: the control circuit board further comprises a controller power supply unit (6) and a driving unit (7), the controller power supply unit (6) is electrically connected with the power connector and the controller respectively, and the driving unit (7) is electrically connected with the controller and a coil of the relay (J1) respectively.

4. Steam ironing device according to claim 3, characterized in that: the voltage sampling unit (4) comprises a third diode (D3), a fourth resistor (R4), a fifth resistor (R5) and a third capacitor (C3), the third diode (D3) and the fourth resistor (R4) are connected between the anode (L) of the power supply connector and the sampling end of the controller in series, the cathode of the third diode (D3) is electrically connected with the fourth resistor (R4), and the fifth resistor (R5) and the third capacitor (C3) are connected between the cathode (N) of the power supply connector and the sampling end of the controller in parallel.

5. Steam ironing device according to claim 3, characterized in that: the controller power supply unit (6) comprises a voltage reduction circuit (61), a rectifying circuit (62), a filter circuit (63) and a voltage reduction and voltage regulation circuit (64), wherein the voltage reduction circuit (61) comprises a first resistor (R1), a second resistor (R2), a third resistor (R3) and a first capacitor (C1), the rectifying circuit (62) comprises a first diode (D1) and a second diode (D2), the filter circuit (63) comprises a second capacitor (C2), and the voltage reduction and voltage regulation circuit (64) comprises a sixth resistor (R6), a voltage stabilizing diode (ZD1), a fourth capacitor (C4) and a fifth capacitor (C5);

the first resistor (R1), the second resistor (R2), the third resistor (R3), the first diode (D1) and the second capacitor (C2) are sequentially connected in series between the anode (L) and the cathode (N) of the power supply connector, the first capacitor (C1) is connected in parallel with the second resistor (R2) and the third resistor (R3) which are connected in series, and the second diode (D2) is connected in parallel with the first diode (D1) and the second capacitor (C2) which are connected in series; wherein the anode of the second diode (D2) is electrically connected with the cathode (N) of the power connector, the cathode of the second diode (D2) is electrically connected with the anode of the first diode (D1), and the cathode of the first diode (D1) is electrically connected with the anode of the second capacitor (C2);

one end of the sixth resistor is electrically connected with the positive electrode of the second capacitor (C2), the other end of the sixth resistor is electrically connected with the negative electrode of the voltage stabilizing diode (ZD1), the positive electrode of the fourth capacitor (C4) and one electrode of the fifth capacitor (C5), the positive electrode of the voltage stabilizing diode (ZD1), the negative electrode of the fourth capacitor (C4) and the other electrode of the fifth capacitor (C5) are electrically connected with the negative electrode (N) of the power connector, and the power supply section of the controller is electrically connected with the positive electrode of the fourth capacitor (C4).

6. Steam ironing device according to claim 3, characterized in that: the driving unit (7) comprises a seventh resistor (R7), a triode (Q1) and a fourth diode (D4), wherein one end of the seventh resistor (R7) is electrically connected with a driving signal output end of the controller, the other end of the seventh resistor (R7) is electrically connected with a base electrode of the triode (Q1), a collector electrode of the triode (Q1) is electrically connected with a positive electrode of the fourth diode (D4), an emitter electrode of the triode (Q1) is electrically connected with a negative electrode (N) of the power connector, a negative electrode of the fourth diode (D4) is electrically connected with a positive electrode (L) of the power connector, and two ends of a coil of the relay (J1) are electrically connected with two ends of the fourth diode (D4).