Power supply circuit of garment steamer and garment steamer

Abstract

The power supply circuit comprises a power supply module, a water pump control module, a heating wire control module and a controller, the input end of the power supply module is connected with alternating current mains supply, the output end of the power supply module is connected with the controller, and the controller is connected with the water pump control module. The two ends of the heating wire control module are connected to the power module and the controller respectively, the water pump control module comprises a water pump, a diode D4 and a silicon controlled rectifier Q2, the silicon controlled rectifier Q2 is used for controlling connection or disconnection of a power supply loop of the water pump, one end of the water pump is connected to the power module, and the other end of the water pump is connected to the controller. The other end of the water pump is connected to an anode of the diode D4, a cathode of the diode is connected to an anode of the silicon controlled rectifier Q2, a cathode of the silicon controlled rectifier Q2 is grounded, a control electrode of the silicon controlled rectifier Q2 is connected to the controller, and the garment steamer comprises the power supply circuit. And the steam quantity is controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of clothes steamers, and particularly relates to a power supply circuit of a clothes steamer and a clothes steamer. Background Art

[0002] A clothes steamer is a household appliance mainly used for ironing clothes to remove wrinkles on the clothes. Compared with traditional irons, the clothes steamer uses steam to iron clothes without direct contact with the hot bottom plate, so the damage to clothes is relatively small, especially suitable for ironing fabrics that are not suitable for high-temperature ironing.

[0003] The working principle of common clothes steamers on the market is as follows: water is pumped to a heating element by a water pump, the heating element heats the water to generate steam, the steam is transmitted to a clothes steaming nozzle through a pipeline, and finally hot steam is sprayed onto the clothes to soften and flatten the fibers.

[0004] During use, it is necessary to control the steam volume of the clothes steamer. Otherwise, the steam volume will be uneven or unstable, resulting in poor ironing effect or even damage to the clothes. The existing clothes steamer controls the heating power of the heating wire by setting high-power components, and then controls the steam volume output by the clothes steamer. However, the high-power components generate a large amount of heat, and a heat sink needs to be set for heat dissipation to ensure the normal operation of the clothes steamer, resulting in a high production cost of the clothes steamer. Summary of the Utility Model

[0005] To solve the deficiencies of the prior art, the utility model provides a power supply circuit of a clothes steamer and a clothes steamer. The clothes steamer includes the power supply circuit, and the clothes steamer can control the steam volume while reducing the production cost.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] A power supply circuit of a clothes steamer includes a power supply module, a water pump control module, a heating wire control module and a controller. The input end of the power supply module is connected to the AC mains, the output end of the power supply module is connected to the controller, both ends of the heating wire control module are respectively connected to the power supply module and the controller. The water pump control module includes a water pump, a diode D4 and a thyristor Q2. The thyristor Q2 is used to control the on or off of the power supply circuit of the water pump. One end of the water pump is connected to the power supply module, the other end of the water pump is connected to the anode of the diode D4, the cathode of the diode is connected to the anode of the thyristor Q2, the cathode of the thyristor Q2 is grounded, and the control electrode of the thyristor Q2 is connected to the controller.

[0008] Further, the heating wire control module includes a first heating wire, a second heating wire, and a toggle switch. The first heating wire is suitable for a voltage of 110V, and the second heating wire is suitable for a voltage of 220V. One end of the first heating wire and the second heating wire is connected to the power supply module, and the other ends of the first heating wire and the second heating wire are respectively connected to different pins of the changeover switch. The toggle switch is connected to the controller.

[0009] Further, a capacitor C3, a resistor R11, and a resistor R13 are also provided between the control electrode of the thyristor Q2 and the controller. One end of the resistor R13 is connected to the control electrode of the thyristor Q2, the other end of the resistor R13 is connected to the resistor R11, one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected to the node of the resistor R11 and the resistor R13. The controller is connected to the node of the resistor R11 and the resistor R13.

[0010] Further, the water pump control module further includes a compensation circuit. The compensation circuit includes a resistor R17 and a capacitor C7. The capacitor C7 is connected in series with the resistor R17. One end of the compensation circuit is connected to the node between the diode D4 and the anode of the thyristor Q2, and the other end of the compensation circuit is connected to the node between the cathode of the thyristor Q2 and the ground.

[0011] Further, the power supply module includes a filter circuit, a surge protection circuit, a rectifier circuit, and an offline voltage regulator. The input end of the filter circuit is connected to the mains power supply. The surge protection circuit is connected across the filter circuit. The output end of the filter circuit is connected to the input end of the rectifier circuit. The output end of the rectifier circuit is connected to the offline voltage regulator. The output end of the offline voltage regulator is connected to the controller.

[0012] Further, the power supply module further includes a detection circuit. The detection circuit includes a grid synchronization detection circuit and a voltage synchronization detection circuit. The input end of the detection circuit is connected between the surge protection circuit and the rectifier circuit, and the output end of the detection circuit is connected to the controller.

[0013] Further, the controller includes a main control chip U3. The model of the main control chip U3 is PFS122. The main control chip U3 has 14 pins. The output end of the power supply module is connected to pin 1 of the main control chip U3, and pin 5 of the main control chip U3 is connected to the water pump control module.

[0014] Further, an RC filter circuit is also provided between the power supply module and pin 1 of the controller. The RC filter circuit includes a resistor R6 and a capacitor C4. One end of the resistor R6 is connected to the power supply module, the other end of the resistor R6 is connected to pin 2 of the main control chip U3, one end of the capacitor C4 is grounded, and the other end of the capacitor C4 is connected to the node between the resistor R6 and pin 2 of the main control chip U3.

[0015] Further, the controller is also connected to a screen display circuit. The screen display circuit includes a display screen, and the display screen has a plurality of COM electrodes, and the plurality of COM electrodes are respectively connected to the controller.

[0016] The present invention also provides a hanging ironing machine, including the power supply circuit of the hanging ironing machine as described above.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a power supply circuit for a hanging ironing machine and a hanging ironing machine. The hanging ironing machine includes the power supply circuit. The power supply circuit includes a water pump control module. By setting a low-power thyristor and a controller, the water extraction volume of the water pump is controlled through software and hardware cooperation, so as to realize the control of the steam volume. There is no need to set high-power components and heat sinks, reducing the production cost. Description of the Drawings

[0019] Figure 1 is a schematic circuit diagram of a power supply circuit for a hanging ironing machine provided by the present invention;

[0020] Figure 2 is a schematic diagram of a power supply module of a power supply circuit for a hanging ironing machine provided by the present invention;

[0021] Figure 3 is a schematic diagram of a water pump control module of a power supply circuit for a hanging ironing machine provided by the present invention;

[0022] Figure 4 is a schematic diagram of a screen display circuit of a power supply circuit for a hanging ironing machine provided by the present invention;

[0023] Figure 5 is a schematic diagram of a grid synchronization detection circuit of a power supply circuit for a hanging ironing machine provided by the present invention;

[0024] Figure 6 is a schematic diagram of a grid voltage detection circuit of a power supply circuit for a hanging ironing machine provided by the present invention;

[0025] Description of the Reference Numerals:

[0026] 10. RC filter circuit; 20. Power supply module; 21. First current fuse; 22. First rectifier circuit; 23. Offline voltage regulator; 24. Temperature switch; 25. Heating wire control module; 26. Second current fuse; 27. Second rectifier circuit; 30. Water pump; 40. Controller. Detailed implementation

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] Compared with the existing steam iron, the present utility model provides a power supply circuit for a steam iron and a steam iron. By setting a low-power thyristor and a controller, the amount of water pumped by the water pump is controlled through software and hardware cooperation, thereby realizing the control of the steam volume. There is no need to set high-power components and heat sinks, reducing the production cost.

[0029] Referring to Figures 1 to 6 , the present utility model provides a power supply circuit for a steam iron, including a power supply module 20, a water pump control module, a heating wire control module 25 and a controller 40.

[0030] The input end of the power supply module 20 is connected to the AC mains, the output end of the power supply module 20 is connected to the controller 40. The power supply module 20 includes a step-down voltage regulation circuit, which is used to convert the AC mains into a +5V DC power supply and supply power to the controller 40. Both ends of the heating wire control module 25 are respectively connected to the power supply module 20 and the controller 40. One end of the water pump control module is connected to the power supply module 20, and the other end of the water pump control module is connected to the controller 40. The controller 40 controls the water pump control module.

[0031] In this embodiment, the water pump control module includes a water pump 30, a diode D4, and a thyristor Q2. The thyristor Q2 is used to control the conduction or disconnection of the power supply circuit of the water pump 30. One end of the water pump 30 is connected to the power supply module 20, the other end of the water pump 30 is connected to the anode of the diode D4, the cathode of the diode is connected to the anode of the thyristor Q2, the cathode of the thyristor Q2 is grounded, and the control electrode of the thyristor Q2 is connected to the controller 40. A signal is sent from the controller 40 to the water pump 30 control module. When the signal is valid, the water pump control module will activate the water pump 30.

[0032] The working principle of the water pump control module is as follows:

[0033] On the one hand, the diode D4 functions as a rectifier. Under the action of the diode D4, only the current in the positive half cycle of the alternating current input by the power supply module 20 flows through the water pump 30. Therefore, the water pump 30 is in a non-operating state during the negative half cycle of the alternating current. On the other hand, the diode D4 functions as a voltage reducer, which can protect the circuit from the influence of excessive voltage.

[0034] When the controller 40 outputs a high level to the control terminal of the thyristor Q2, the thyristor Q2 is in a conducting state during the positive half cycle of the alternating current, and the water pump 30 starts to operate. When the controller 40 outputs a low level to the control terminal of the thyristor Q2, the thyristor Q2 is in a cut-off state during the negative half cycle of the alternating current, the power supply circuit of the water pump 30 is disconnected, and the water pump 30 does not operate.

[0035] Therefore, by controlling the ratio of the high-level signal and the low-level signal output by the controller 40 to the control electrode of the thyristor Q2 within a unit time, the ratio of the time when the water pump 30 is in the operating state and the non-operating state within a unit time can be controlled, that is, the workload of the water pump 30 can be controlled, so as to control the amount of water pumped by the water pump 30 within a unit time. By controlling the heating wire control module 25 with different amounts of water pumped by the water pump 30, different amounts of steam can be generated, thereby realizing the control of the steam amount of the steam iron.

[0036] The water pump control module further includes a compensation circuit, and the compensation circuit can reduce the reactive power consumption caused by inductive loads. In this embodiment, the compensation circuit includes a resistor R17 and a capacitor C7. The capacitor C7 is connected in series with the resistor R17. One end of the compensation circuit is connected to the node between the diode D4 and the anode of the thyristor Q2, and the other end of the compensation circuit is connected to the node between the cathode of the thyristor Q2 and the ground.

[0037] In this embodiment, the water pump control module further includes a capacitor C3, a resistor R11 and a resistor R13. One end of the resistor R13 is connected to the control electrode of the thyristor Q2, the other end of the resistor R13 is connected to the resistor R11, one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is connected to the node between the resistor R11 and the resistor R13. The controller 40 is connected to the node between the resistor R11 and the resistor R13. The capacitor C3 is used for filtering and removing noise to ensure the stability of signal transmission. The resistors R13 and R17 are used to adjust the current to protect the circuit components.

[0038] In this embodiment, the heating wire control module 25 includes a first heating wire, a second heating wire, and a toggle switch. The first heating wire is suitable for a voltage of 110V, and the second heating wire is suitable for a voltage of 220V. One ends of the first heating wire and the second heating wire are connected to the power supply module 20, and the other ends of the first heating wire and the second heating wire are respectively connected to different pins of the change-over switch. The toggle switch is connected to the controller 40.

[0039] Specifically, the toggle switch includes 6 pins. Pin 1 is connected to the first heating wire, pin 3 is connected to the second heating wire, pin 4 is connected to the controller 40 after passing through the second rectification circuit 27, and pin 5 is connected to the water pump control module through the second current fuse tube 26. The middle node between the second rectification circuit 27 and the controller 40 is grounded through a resistor R2, and a capacitor C1 is connected in parallel at both ends of the resistor R2. The capacitor C1 can play a filtering role to make the output voltage relatively stable and avoid large fluctuations.

[0040] For most parts of Asia, a voltage of about 220V and a frequency of 50HZ are usually used; for regions such as North America, a voltage of about 110V and a frequency of 60HZ are usually used. This means that the usage scenarios of many electrical appliances are limited, and adapters or transformers may be required to adapt to the voltages and frequencies of different countries.

[0041] However, the power supply circuit of the present utility model can switch to different heating wires according to the input voltage, without the need to additionally set an adapter or a transformer, and the operation is simple, which is convenient for consumers to use in different regions. The controller 40 can judge whether the position of the toggle switch is correct according to the connected power supply voltage to ensure that the clothes hanger iron can work normally and avoid damage or safety problems.

[0042] Further, a temperature switch 24 is also provided between the heating wire control module 25 and the power supply module 20. The temperature switch 24 serves as a safety device and automatically cuts off the power supply when the temperature exceeds the safety threshold.

[0043] In this embodiment, the power supply module 20 includes a filtering circuit, a surge protection circuit, a first rectification circuit 22, and an offline voltage regulator 23. The input end of the filtering circuit is connected to the mains power supply, the surge protection circuit is connected across the filtering circuit, the output end of the filtering circuit is connected to the input end of the first rectification circuit 22, the output end of the first rectification circuit 22 is connected to the offline voltage regulator 23, and the output end of the offline voltage regulator 23 is connected to the controller 40.

[0044] Further, the power supply circuit is also provided with a first current fuse 21, which is arranged between the rectifier circuit and the power module 20. When the current in the circuit exceeds the normal working current, the first current fuse 21 will blow, cutting off the circuit to prevent the clothes hanger iron from being damaged due to overload.

[0045] The model of the offline voltage regulator 23 is KP3310. KP3310 integrates a start control circuit, a VDD voltage control circuit, an AC signal synchronous detection circuit, a low dropout regulator, etc. By adjusting the resistance value of the SEL pin, KP3310 can obtain three output voltages of 5V / 3.3V / 2.7V. In this embodiment, KP3310 outputs a voltage of 5V to the controller 40.

[0046] In this embodiment, the controller 40 is further connected to a screen display circuit, which includes a display screen. The display screen has a plurality of COM electrodes, and the plurality of COM electrodes are respectively connected to different pins of the controller 40. The controller 40 can feedback the working state of the clothes hanger iron to the screen display circuit and display it on the display screen, facilitating the user to understand the working state of the clothes hanger iron.

[0047] In this embodiment, the power module 20 further includes a detection circuit, which includes a grid synchronization detection circuit and a voltage synchronization detection circuit. The input end of the detection circuit is connected between the surge protection circuit and the rectifier circuit, and the output end of the detection circuit is connected to the controller 40. The grid synchronization detection circuit is a known circuit in the field and will not be elaborated here. The voltage synchronization detection circuit includes a diode D3, a resistor R1, and a resistor R25. The anode of the diode D3 is connected to the middle node between the first current fuse 21 and the first rectifier circuit 22, the cathode of the diode D3 is connected to the resistor R1, the resistor R1 is connected to the controller 40, the resistor R25 is connected to the middle node between the resistor R1 and the controller 40, and a capacitor C6 is connected in parallel at both ends of the resistor R25. The capacitor C6 can play a filtering role to make the output voltage relatively stable and avoid large fluctuations.

[0048] The detection circuit is used to detect the voltage of the input mains electricity and determine whether the mains electricity voltage meets the normal working conditions of the clothes hanger iron. If the mains electricity voltage does not meet the normal working conditions of the clothes hanger iron, the detection circuit will feedback the signal to the controller 40, the controller 40 will feedback the signal to the screen display circuit, and corresponding fault codes will appear on the display screen. At the same time, the clothes hanger iron will stop working.

[0049] In this embodiment, the controller 40 includes a main control chip U3, the model of the main control chip U3 is PFS122, and the main control chip U3 includes 14 pins.

[0050] The output end of the power supply module 20 is connected to pin 1 of the main control chip U3. An RC filter circuit 10 is also provided between the power supply module 20 and pin 1 of the main control chip U3. The RC filter circuit 10 includes a resistor R6 and a capacitor C4. One end of the resistor R6 is connected to the power supply module 20, the other end of the resistor R6 is connected to pin 2 of the main control chip U3, one end of the capacitor C4 is grounded, and the other end of the capacitor C4 is connected to the node of the resistor R6 and pin 2 of the main control chip U3. The RC filter circuit 10 can smooth voltage fluctuations and provide a more stable power supply voltage for the main control chip U3.

[0051] The controller 40 is also connected to a switch circuit. One end of the switch circuit is connected to pin 2 of the controller 40, and the other end of the switch circuit is grounded. The switch circuit includes a button, and the on / off and mode switching are realized through the button.

[0052] Pin 5 of the main control chip U3 is connected to the water pump control module, pin 6 of the main control chip U3 is connected to the grid synchronization detection circuit, pin 9 of the main control chip U3 is connected to the grid voltage detection circuit, pin 8 of the main control chip U3 is connected to the heating wire control module 25, pins 10-13 of the main control chip U3 are connected to the screen display circuit, and pin 14 of the main control chip U3 is grounded.

[0053] The present utility model also provides a steam iron, including the power supply circuit of the steam iron described above.

[0054] The using steps of the steam iron provided by the present utility model are as follows:

[0055] First, confirm that the toggle switch is in the correct position, press the button to turn on the machine, and control the ratio of the high-level signal and the low-level signal output by the controller 40 to the control pole of the thyristor Q2 within a unit time to control the amount of water pumped by the water pump 30 within a unit time, and then heat the water through the heating wire to generate different amounts of steam.

[0056] It can be understood that those skilled in the art can, under the teaching of the above embodiments, combine various implementation manners in the above various embodiments to obtain technical solutions of various implementation manners.

[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A power supply circuit for a hanging ironing machine, characterized in that, It includes a power supply module, a water pump control module, a heating wire control module and a controller. The input end of the power supply module is connected to the AC mains, the output end of the power supply module is connected to the controller, and both ends of the heating wire control module are respectively connected to the power supply module and the controller. The water pump control module includes a water pump, a diode D4 and a thyristor Q2. The thyristor Q2 is used to control the conduction or disconnection of the power supply circuit of the water pump. One end of the water pump is connected to the power supply module, the other end of the water pump is connected to the anode of the diode D4, the cathode of the diode is connected to the anode of the thyristor Q2, the cathode of the thyristor Q2 is grounded, and the control electrode of the thyristor Q2 is connected to the controller.

2. The power supply circuit of a clothes hanger iron according to claim 1, characterized in that The heating wire control module includes a first heating wire, a second heating wire and a toggle switch. The first heating wire is suitable for a voltage of 110V, and the second heating wire is suitable for a voltage of 220V. One ends of the first heating wire and the second heating wire are connected to the power supply module, and the other ends of the first heating wire and the second heating wire are respectively connected to different pins of the change-over switch. The toggle switch is connected to the controller.

3. The power supply circuit of a hanging ironing machine according to claim 1, characterized in that, A capacitor C3, a resistor R11 and a resistor R13 are also arranged between the control electrode of the thyristor Q2 and the controller. One end of the resistor R13 is connected to the control electrode of the thyristor Q2, the other end of the resistor R13 is connected to the resistor R11, one end of the capacitor C3 is grounded, the other end of the capacitor C3 is connected to the node of the resistor R11 and the resistor R13, and the controller is connected to the node of the resistor R11 and the resistor R13.

4. The power supply circuit of a hanging ironing machine according to claim 1, characterized in that The water pump control module also includes a compensation circuit. The compensation circuit includes a resistor R17 and a capacitor C7. The capacitor C7 is in series with the resistor R17. One end of the compensation circuit is connected to the node of the diode D4 and the anode of the thyristor Q2, and the other end of the compensation circuit is connected to the node of the cathode of the thyristor Q2 and the ground.

5. The power supply circuit of a hanging ironing machine according to claim 1, characterized in that, The power supply module includes a filter circuit, a surge protection circuit, a rectifier circuit and an offline voltage regulator. The input end of the filter circuit is connected to the mains, the surge protection circuit is connected across the filter circuit, the output end of the filter circuit is connected to the input end of the rectifier circuit, the output end of the rectifier circuit is connected to the offline voltage regulator, and the output end of the offline voltage regulator is connected to the controller.

6. The power supply circuit of a hanging ironing machine according to claim 5, characterized in that, The power supply module also includes a detection circuit. The detection circuit includes a grid synchronization detection circuit and a voltage synchronization detection circuit. The input end of the detection circuit is connected between the surge protection circuit and the rectifier circuit, and the output end of the detection circuit is connected to the controller.

7. The power supply circuit of a clothes hanger iron according to claim 1, wherein The controller includes a main control chip U3. The model of the main control chip U3 is PFS122. The main control chip U3 has 14 pins. The output end of the power supply module is connected to pin 1 of the main control chip U3, and pin 5 of the main control chip U3 is connected to the water pump control module.

8. The power supply circuit of a hanging ironing machine according to claim 7, characterized in that, An RC filtering circuit is further provided between the power supply module and the pin 1. The RC filtering circuit includes a resistor R6 and a capacitor C4. One end of the resistor R6 is connected to the power supply module, the other end of the resistor R6 is connected to the pin 2 of the main control chip U3, one end of the capacitor C4 is grounded, and the other end of the capacitor C4 is connected to the node between the resistor R6 and the pin 2 of the main control chip U3.

9. The power supply circuit of a hanging ironing machine according to claim 1, wherein, The controller is further connected to a screen display circuit. The screen display circuit includes a display screen. The display screen has a plurality of COM electrodes, and the plurality of COM electrodes are respectively connected to the controller.

10. A steam iron, characterized in that, A power supply circuit of a clothes hanger ironing machine according to any one of claims 1 to 9 is included.

Images