Steam iron

Abstract

The control means performs control so that the iron continues to be driven by the power of the storage mechanism only when the power failure detection means detects that there is no power supply, thereby providing a steam iron that overcomes the defects of a water pump having a slow response, a complex circuit, and a high failure rate. [Solution] When there is an external power source to supply power, the first water pump 102 is powered by the external power source, but when there is no external power source to supply power, the power storage device is not switched to powering the first water pump, and the power storage device is charged by the external power source and powers the first water pump. Regardless of whether the external power source supplies power during water pump water supply, the first water pump always supplies water from the first water tank 101 to the vaporization chamber 105 under power supply from the power storage device, and even when the external power source changes from power supply to power receiving unit 108 to non-power supply, water supply from the first water pump is not interrupted, ensuring continuous water supply from the water pump. Power failure detection means is eliminated, the circuit is simplified, and failure points and failure rate are reduced.

Description

[Technical field]

[0001] The present invention relates to the art of ironing fabrics, and more particularly to steam irons. [Background technology]

[0002] Steam appliances, such as electric steam irons, heat water to vaporize steam for ironing clothes. The water stored in the water tank flows into the vaporization chamber by turning on the mechanical water valve, and when the pressure in the vaporization chamber becomes high, it becomes difficult for the water to flow out of the water tank.

[0003] To ensure the flow of water, the water stored in the water tank is pumped to the vaporization chamber by the water pump. The water pump cannot operate without relying on the supply of electrical energy, so if there is an accidental power outage, for example, if the main power source connected to the power line of the ironing device suddenly goes out of power, or if the power line of the ironing device is separated from the main power source, or if the ironing device that can operate in wireless mode is separated from the power supply (for example, separated from the power supply base), the water pump will lose power and will not be able to pump water, and the steam output will be suddenly interrupted, which is detrimental to the finishing work of ironing. After the water supply is interrupted, the vaporization chamber is still kept at a high temperature and the temperature drop is slow, and there is a potential danger. In addition, the water pump usually also has the function of a water valve, that is, it circulates the supply water when water is being supplied, and closes the water supply path when water is not being supplied, but if the water pump cannot be switched to a state where the water supply path is closed when the water supply is stopped unintentionally, the water tank will leak.

[0004] Furthermore, in order to eliminate the disadvantages caused by the sudden power outage, the following solution has been proposed. When the power outage detection means detects that there is no power supply during the water pump's water supply, the control means controls the water pump so that it continues to be driven by the power of the power storage mechanism. In such a solution, the control means controls the water pump so that it continues to be driven by the power of the power storage mechanism only when the power outage detection means detects that there is no power supply, so the response is slow and the water pump may be temporarily stopped, which is a disadvantage even if the water pump is temporarily stopped for a very short time. In addition, in such a solution, the power outage detection means is arranged, so the circuit arrangement becomes complicated, and if the complex circuits are arranged in a concentrated manner in the handy ironing device, the internal structure of the handy ironing device may collide or the volume of the product may increase, which increases the burden on the manufacture and use of the product. The complex circuit further increases the failure rate. Summary of the Invention

[0005] The technical problem that this invention aims to solve is to overcome the deficiencies of the prior art, such as slow response, complex circuitry, and high failure rate, which are caused by the control means controlling the water pump to continue to be powered by the power storage mechanism only when the power outage detection means detects that there is no power supply.The proposed technical objective is to provide a steam iron in which the water pump can continue to pump water when the power supply from the external power source is interrupted, thereby simplifying the circuitry and reducing the failure rate of the product.

[0006] In order to achieve the above object, the steam iron of the present invention is a steam iron including a main body suitable for hand-holding, the main body comprising: a first water tank for storing water; an evaporation chamber for evaporating the water delivered thereto by heating the water delivered thereto by the heating assembly; a first water pump for pumping water from the first water tank to the vaporization chamber; a power storage device for supplying power to the first water pump; a power receiving section for connecting to an external power source to power the heating assembly and the power storage device; During operation of the main body, regardless of whether the external power source supplies power to the power receiving unit, the first water pump is powered by the power storage device to pump water, and when the external power source changes from supplying power to the power receiving unit to not supplying power, the power storage device continues to supply power to the first water pump so that the first water pump can pump water.

[0007] In the steam iron, when there is an external power source to supply power, the external power source supplies power to the first water pump, but when there is no external power source to supply power, the power storage device does not switch to supplying power to the first water pump, but supplies power to the first water pump from the power storage device, so that during water pump water supply, regardless of whether the external power source supplies power or not, the first water pump always supplies water from the first water tank to the vaporization chamber under power supply from the power storage device, and even if the external power source changes from supplying power to the power receiving unit to not supplying power, the water supply from the first water pump is not interrupted, and continuous water supply from the water pump is guaranteed. In addition, the steam iron does not require detection by a power failure detection means, and the power failure detection means is discarded, the circuit is simplified, and the failure points and failure rate are reduced.

[0008] To avoid dripping, the steam iron includes a temperature detection unit for directly or indirectly detecting the temperature of the vaporization chamber, and when the temperature detected by the temperature detection unit becomes lower than a set temperature, the power supply to the first water pump of the power storage device is cut off.

[0009] Preferably, the steam iron includes an MCU microprocessor, and a bipolar transistor or a field effect transistor is connected between the MCU microprocessor and the first water pump, and when the temperature detected by the temperature detection unit is lower than a set temperature, the MCU microprocessor controls the bipolar transistor or the field effect transistor to cut off the power supply to the first water pump of the power storage device, where the bipolar transistor or the field effect transistor has stable performance and a long service life, it is reliable for the MCU microprocessor to control the bipolar transistor or the field effect transistor to cut off the power supply to the first water pump of the power storage device, and the circuit structure is simple.

[0010] Preferably, when the water pump cannot timely deliver water to the vaporizer or when the amount of water delivered is small, in order to avoid potential dangers caused by dry-burning, the power supply to the heating assembly of the power receiver is cut off when the temperature detected by the temperature detection unit is higher than the set temperature. This is particularly useful when the device is left unused for a long time, because when the device is left unused for a long time, the electric energy stored in the power storage device may be insufficient for the water pump to operate and deliver water, so that even if the temperature of the vaporizer rises higher than the set temperature, the water pump cannot timely deliver water. At this time, the power supply to the heating assembly of the power receiver is cut off to stop continuous heating and play a protective role.

[0011] In order to charge the power storage device, the power receiving unit charges the power storage device through the power supply circuit. The power supply circuit controls the charging operation, and can ensure fast and efficient charging, while maintaining the service life of the power storage device.

[0012] To ensure that the water pump can operate and pump water according to the nominal technical conditions, the power storage device supplies power to the first water pump through a voltage regulation circuit. If the output voltage of the power storage device does not match the operating voltage of the water pump, the voltage regulation circuit adjusts the output voltage of the power storage device to match the operating voltage of the water pump.

[0013] In one embodiment, the power receiving part is a power line of a charging plug connected on the main body. The steam iron of this structure is embodied as an integrated structure, and the main body can operate in a wired mode.

[0014] In another embodiment, the steam iron includes a base for placing the main body, a power line of a charging plug is connected to the base, the main body is electrically coupled to the base via an electric coupler when placed on the base, and the main body is electrically disconnected from the base via the electric coupler when separated from the base, and the electric coupler includes a power receiving unit. The steam iron having such a structure is embodied as a separate structure, and the main body can operate in a wireless mode.

[0015] Preferably, a second water tank and a second water pump are disposed on the base, and when the main body is disposed on the base, the first water tank is connected to the second water tank, so that the second water pump replenishes water from the second water tank to the first water tank, and when the main body is separated from the base, the first water tank is disconnected from the second water tank. This allows water to be automatically replenished to the first water tank by disposing the main body on the base, avoiding the inconvenience of the user replenishing water to the first water tank. Furthermore, when the main body is disposed on the base, charging of the power storage device and replenishing of water to the first water tank can be performed simultaneously.

[0016] In order to provide the steam iron with versatile usage modes, the main body is separably engaged with the base, so that the main body can be operated in a wireless mode by separating the main body from the base, and the main body can be operated in a wired mode by engaging the main body and the base together.

[0017] In order to achieve the above object, the present invention provides a method for controlling a steam iron, the method comprising: a main body in which a first water tank is disposed; a first water pump for sending water from the first water tank to a vaporization chamber; and a vaporization chamber heated by a heating assembly, the method comprising: Powering the heating assembly with an external power source to heat the vaporization chamber, charging the power storage device with the external power source, and powering the first water pump with the power storage device; The present invention provides a method for controlling a steam iron, characterized in that a first water pump delivers water under power supply from a power storage device regardless of whether an external power source supplies power or not, and when the external power source changes from supplying power to not supplying power, the power storage device continues to supply power to the first water pump so that the first water pump can deliver water.

[0018] In this control method, when there is an external power source to supply power, the first water pump is powered by the external power source, but when there is no external power source to supply power, instead of switching to a power storage device to supply power to the first water pump, the power storage device is charged by the external power source and the power storage device supplies power to the first water pump. Therefore, during water pump water supply, regardless of whether the external power source supplies power or not, the first water pump always supplies water from the first water tank to the vaporization chamber under power supply from the power storage device, and even if the external power source changes from supplying power to the power receiving unit to not supplying power, the water supply from the first water pump is not interrupted and continuous water supply from the water pump is ensured.

[0019] In order to prevent the dripping, the temperature of the vaporization chamber is detected directly or indirectly, and when the detected temperature falls below a set temperature, the power supply to the first water pump of the power storage device is cut off.

[0020] Preferably, when the water pump cannot timely deliver water to the vaporizer or when the amount of water delivered is small, the power supply to the heating assembly of the power receiver is cut off when the detected temperature is higher than the set temperature, in order to avoid potential dangers caused by dry burning. This is particularly useful when the device is left unused for a long time, in which case the electrical energy stored in the power storage device may be insufficient for the water pump to operate and deliver water, so that even if the temperature of the vaporizer rises higher than the set temperature, the water pump cannot timely deliver water. At this time, the power supply to the heating assembly of the power receiver is cut off to stop continuous heating and play a protective role.

[0021] In this invention, when there is an external power source to supply power, the first water pump is powered by the external power source, but when there is no external power source to supply power, the power storage device is charged by the external power source and the power storage device supplies power to the first water pump. Regardless of whether the external power source supplies power, the first water pump pumps water while being powered by the power storage device, and when the external power source changes from being powered to not being powered, the power storage device continues to supply power to the first water pump so that the first water pump can pump water. Therefore, while the water pump is pumping water, regardless of whether the external power source supplies power or not, the first water pump always pumps water from the first water tank to the vaporization chamber while being powered by the power storage device, and even when the external power source changes from being powered to being not powered to the power receiving unit, the water supply of the first water pump is not interrupted, and continuous water supply of the water pump is guaranteed.

[0022] In this invention, an external power source powers the heating assembly to heat the evaporation chamber, thereby avoiding a reduction in the operating time of the power storage device due to the high power consumption of the heating assembly, thereby achieving both the water pump's water supply and the heating of the evaporation chamber by the heating assembly.

[0023] The present invention does not require detection by a power failure detection means, the power failure detection means is discarded, the circuit is simplified, and the failure points and failure rate are reduced. [Brief description of the drawings]

[0024] [Figure 1] 1 is a circuit control diagram of a steam iron in accordance with the present invention; [Diagram 2] 4 is a circuit control diagram of a second type of the steam iron in accordance with the present invention; [Diagram 3] 10 is a circuit control diagram of a third type of the steam iron in accordance with the present invention; [Figure 4] 4 is a circuit control diagram of the fourth type of the steam iron in accordance with the present invention; [Diagram 5] 1 is a structural schematic diagram of a steam iron with an integrated mechanism according to the present invention; FIG. [Figure 6] 1 is an assembled schematic diagram of a steam iron with a separate mechanism according to the present invention; FIG. [Figure 7] FIG. 7 is a schematic diagram of a separate part of the steam iron having the separate mechanism shown in FIG. 6 . [Figure 8] FIG. 7 is a cross-sectional view of the steam iron having the separate mechanism shown in FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Of course, the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

[0026] The terms "comprise" and "have" and any variations thereof in the specification and claims of the present invention are intended to be non-exclusive, for example, a method or product comprising a set of technical features is not necessarily limited to those technical features expressly recited, but may include other technical features that may be included in the method or product that are not expressly recited.

[0027] In describing the present invention, it should be understood that the technical features defined by the terms "first", "second", etc., are merely intended to clearly describe the defined technical features so as to clearly distinguish the defined technical features from other technical features, and there is no point in naming them in actual implementation, and therefore they should not be construed as limiting the present invention.

[0028] The present invention will be described in detail below in combination with specific embodiments and drawings.

[0029] Example 1 As shown in Figures 1 and 5, the steam iron only includes a handheld main body 100. A power line 201 of a charging plug is connected to the main body 100, and the power line 201 of the charging plug is used as a power receiving part 108 that is inserted into a power socket of an external power source to obtain electricity and operate. Therefore, the steam iron has an integrated structure and operates in a wired mode.

[0030] The main body 100 includes a body, a first water tank 101, a vaporization chamber 105, a first water pump 102, a power storage device, and a power receiving unit 108 arranged in the body.

[0031] The vaporization chamber 105 is formed in a boiler 103, and the boiler 103 is heated by a heating assembly 104, such as an electric heating tube, embedded therein, and the heating assembly 104 is used to heat the vaporization chamber 105 to vaporize the water sent to the vaporization chamber 105. After the water is vaporized into steam in the vaporization chamber 105, it is discharged from the discharge hole of the steam panel 106 to iron clothes. The vaporization chamber 105 and the steam panel 106 shown in the figure are located at the top of the product, and the center of the product is suitable for gripping, so the steam iron shown in the figure is generally called a "steam brush".

[0032] In another embodiment, the vaporizer chamber 105 can be defined between a customarily called bottom plate and a lid covered by the bottom plate, and the bottom plate is provided with an outlet hole, and the vaporized steam is discharged through the outlet hole of the bottom plate to iron the clothes. In such a layout manner of the vaporizer chamber 105, the handle for holding is usually located at the top of the product, and the bottom plate is located at the bottom, and the steam iron with such a structural layout is customarily called an "iron".

[0033] The first water tank 101 is used to store water. The first water pump 102 is used to pump water from the first water tank 101 to the vaporization chamber 105. The power storage device is used to power the first water pump 102. The power receiving unit 108 is connected to an external power source and used to power the heating assembly 104 and the power storage device.

[0034] The live line ACL and neutral line CAN in Fig. 1 are embodied as the power line 201 of the charging plug in Fig. 4 as the power receiving unit 108. The battery 107 is a power storage device. In other embodiments, the battery 107 can be replaced by other power storage components, such as a supercapacitor. The power receiving unit 108 charges the battery 107 via the power supply circuit 112. The battery 107 and the battery management circuit 127 form a power supply circuit for the first water pump 102.

[0035] 1, the heating assembly 104 is powered directly by the live line ACL and neutral line CAN, and is connected to the MCU microprocessor 110 via the relay circuit 113, so that the MCU microprocessor 110 can control heating or stopping of heating via the relay circuit 113. The steam button 114 and the mode selection button 115 are connected to the MCU microprocessor 110 via the switch circuit 116. The steam button 114 is for controlling the first water pump 102, and can be set to control the water supply of the first water pump 102 via the switch circuit 116 when the steam button 114 is pressed, and to stop the water supply of the first water pump 102 via the switch circuit 116 when the steam button 114 is released. The mode selection button 115 is used to select the working range, for example, to set the ironing range for different fabrics, and the ironing range for different fabrics has different set temperatures. The mode selection indicator 117 is connected to the MCU microprocessor 110 via the LED circuit 118. When the mode range is selected, the mode selection indicator 117 is lit to indicate it. The buzzer 119 is connected to the MCU microprocessor 110 through the alarm circuit 120. When a fault occurs, the buzzer 119 issues an alarm. And the neutral line is connected to the MCU microprocessor 110 through the neutral line circuit 121 to protect the safety of power use. The MCU microprocessor 110 is further connected to the temperature detection unit 109, which is used to control the heating assembly 104 to generate or stop generating heat according to the detected temperature. The illustrated temperature detection unit 109 is assembled on the boiler 103, which is a good conductor of heat, and the temperature of the boiler 103 represents the temperature of the vaporizer chamber 105. The MCU microprocessor 110, the switch circuit 116, the LED circuit 118, the alarm circuit 120, the zero cross circuit 121, etc., therein can be centrally arranged on the PCB circuit board 128.

[0036] In addition, a bipolar transistor 111 is connected between the MCU microprocessor 110 and the first water pump 102. When the temperature detected by the temperature detection unit 109 is lower than the set temperature, the MCU microprocessor 110 controls the bipolar transistor 111 to cut off the power supply to the first water pump 102 of the power storage device. The set temperature may be a specific temperature value or a temperature range. For each mode range, when the temperature detected by the temperature detection unit 109 is higher than the set temperature, the power supply to the heating assembly 104 of the power receiving unit 108 is cut off. In another embodiment, the bipolar transistor 111 can be replaced by a field effect transistor.

[0037] According to the above circuit structure, when the main body 100 is operating, regardless of whether the external power source supplies power to the power receiving unit 108, the first water pump 102 is powered by the power storage device to pump water, and when the external power source changes from supplying power to the power receiving unit 108 to not supplying power, the power storage device continues to supply power to the first water pump 102 so that the first water pump 102 can pump water.

[0038] Example 2 As shown in FIG. 2, the steam iron is different from the first embodiment only in terms of the circuit. In this embodiment, the power storage device supplies power to the first water pump 102 through a voltage regulation circuit. If the output voltage of the power storage device does not match the working voltage of the water pump, the voltage regulation circuit regulates the output voltage of the power storage device to match the working voltage of the water pump. For example, if the working voltage of the water pump is 5 volts and the output voltage of the battery 107 is 3.7 volts, the output voltage of the battery 107 needs to be increased to drive the water pump, and the voltage regulation circuit at this time is the boost circuit 122 shown in the figure. Conversely, if the working voltage of the water pump is lower than the output voltage of the battery 107, the output voltage of the power storage device needs to be reduced by a step-down circuit.

[0039] The other structures are the same as those in the first embodiment and will not be described again.

[0040] Example 3 As shown in Fig. 3 and Fig. 6-8, the steam iron is distinguished from the embodiment 1 only in the structure of the product. In this embodiment, the steam iron includes a base 200 for placing the main body 100. A first electric contact 123, a first water interface 124, and a first snap structure 125 are provided on the main body 100. A power line 201 of a charging plug is connected to the base 200, and a second electric contact 204, a second water interface 205, and a second snap structure 206 are also provided on the base 200. A second water tank 202 and a second water pump 203 are further provided on the base 200. Here, the first electric contact 123 and the second electric contact 204 are configured as an electric coupler 300, and the first water interface 124 and the second water interface 205 are configured as a water coupler. When the main body 100 is placed on the base 200 as shown in Fig. 6 and Fig. 8, it is electrically coupled to the base 200 via the electric coupler 300, and the first water tank 101 is coupled and connected to the second water tank 202 via the water coupler, so that the second water pump 203 supplies water from the second water tank 202 to the first water tank 101. When the main body 100 is separated from the base 200 as shown in Fig. 7, it is electrically disconnected from the base 200 via the electric coupler 300, and the first water tank 101 is disconnected from the second water tank 202 via the water coupler. Here, the first electrical contact 123 becomes the power receiving unit 108 of the main body 100, i.e., the electric coupler 300 includes the power receiving unit 108.

[0041] Furthermore, when the main body 100 is placed on the base 200, the main body 100 is assembled by the first snap structure 125 and the second snap structure 206 so that the main body 100 cannot be freely separated, and such assembly is realized by turning the knob 126 on the main body 100 to engage the first snap structure 125 with the second snap structure 206. Similarly, by turning the knob 126 on the main body 100 to separate the first snap structure 125 from the second snap structure 206, the main body 100 can be freely removed from the base 200.

[0042] When the main body 100 and the base 200 are engaged by the first snap structure 125 and the second snap structure 206, the steam iron operates in a wired mode. When the main body 100 is removed from the base 200, the main body 100 operates in a wireless mode.

[0043] The other structures are the same as those in the first embodiment and will not be described again.

[0044] Example 4 As shown in FIG. 4, the steam iron is distinguished from the third embodiment only in terms of the circuit. In this embodiment, the power storage device supplies power to the first water pump 102 through a voltage regulation circuit. If the output voltage of the power storage device does not match the working voltage of the water pump, the voltage regulation circuit regulates the output voltage of the power storage device to match the working voltage of the water pump. For example, if the working voltage of the water pump is 5 volts and the output voltage of the battery 107 is 3.7 volts, the output voltage of the battery 107 needs to be increased to drive the water pump, and the voltage regulation circuit at this time is the boost circuit 122 shown in the figure. Conversely, if the working voltage of the water pump is lower than the output voltage of the battery 107, the output voltage of the power storage device needs to be reduced by a step-down circuit.

[0045] The other structures are the same as those in the third embodiment and will not be described again.

[0046] The technical solutions described in the above embodiments disclose a method for controlling a steam iron, namely, powering the heating assembly 104 by an external power source to heat the vaporizer 105, charging the power storage device by the external power source and powering the first water pump 102 by the power storage device, whether the external power source supplies power or not, the first water pump 102 pumps water under the power supply of the power storage device, and when the external power source changes from power supply to non-power supply, the power storage device continues to supply power to the first water pump 102 so that the first water pump 102 can pump water. In addition, the temperature of the vaporizer 105 is directly or indirectly detected, and when the detected temperature is lower than a set temperature, the power storage device cuts off the power supply to the first water pump 102. When the detected temperature is higher than a set temperature, the power receiving unit 108 cuts off the power supply to the heating assembly 104.

[0047] In each of the above embodiments and the control method of a steam iron disclosed therein, regardless of whether the external power source supplies power during water pump water supply, the first water pump 102 always supplies water from the first water tank 101 to the vaporization chamber 105 under power supply from the power storage device, and even if the power supply to the power receiving unit 108 of the external power source changes from being supplied with power to not being supplied with power, the water supply from the first water pump 102 is not interrupted, and continuous water supply from the water pump is guaranteed. In addition, detection by a power failure detection means is not required, the power failure detection means is discarded, the circuit is simplified, and the number of failure points and the failure rate are reduced. [Explanation of symbols]

[0048] 100:Main body 101: First water tank 102: First water pump 103: Boiler 104: Heating assembly 105: Vaporization chamber 106: Steam Panel 107:Battery 108: Power receiving unit 109: Temperature detection unit 110: MCU microprocessor 111: Bipolar transistor 112: Power supply circuit 113: Relay circuit 114: Steam button 115: Mode selection button 116: Switch circuit 117: Mode selection indicator 118: LED circuit 119: Buzzer 120: Alarm circuit 121: Zero cross circuit 122: Boost circuit 123: First electrical contact 124: First water interface 125: First snap structure 126: Knob 127:Battery management circuit 128: PCB circuit board 200: Bass 201: Power line 202: Second water tank 203: Second water pump 204: Second electrical contact 205: Second water interface 206: Second snap structure 300: Electrical coupler

Claims

1. A steam iron having a handheld main body (100), The body (100) is A first water tank (101) for storing water; a vaporization chamber (105) for vaporizing the water delivered thereto by heating it with a heating assembly (104); a first water pump (102) for pumping water from the first water tank (101) to the vaporization chamber (105); an electricity storage device for supplying electricity to the first water pump (102); a power receiving portion (108) connected to an external power source for supplying power to the heating assembly (104) and the power storage device; This steam iron is characterized in that, during operation of the main body (100), regardless of whether the external power source supplies power to the power receiving unit (108), the first water pump (102) is powered by the power storage device to pump water, and when the external power source changes from supplying power to the power receiving unit (108) to not supplying power, the power storage device continues to supply power to the first water pump (102) so that the first water pump (102) can pump water.

2. 2. The steam iron according to claim 1, further comprising a temperature detection unit (109) for directly or indirectly detecting the temperature of the vaporization chamber (105), and when the temperature detected by the temperature detection unit (109) becomes lower than a set temperature, the power supply from the power storage device to the first water pump (102) is cut off.

3. 3. The steam iron according to claim 2, characterized in that the steam iron includes an MCU microprocessor (110), a bipolar transistor (111) or a field effect transistor is connected between the MCU microprocessor (110) and the first water pump (102), and when the temperature detected by the temperature detection unit (109) becomes lower than a set temperature, the MCU microprocessor (110) controls the bipolar transistor (111) or the field effect transistor to cut off power supply from the power storage device to the first water pump (102).

4. 3. The steam iron according to claim 2, characterized in that when the temperature detected by the temperature detection unit (109) becomes higher than a set temperature, the power receiving part (108) cuts off the power supply to the heating assembly (104).

5. The steam iron according to any one of claims 1 to 4, characterized in that the power receiving unit (108) charges the power storage device via a power supply circuit (112).

6. The steam iron according to any one of claims 1 to 4, characterized in that the power storage device supplies power to the first water pump (102) via a voltage regulation circuit.

7. The steam iron according to any one of claims 1 to 4, characterized in that the power receiving unit (108) is a power line (201) of a charging plug connected onto the main body (100).

8. The steam iron according to any one of claims 1 to 4, characterized in that the steam iron includes a base (200) for placing the main body (100), a power line (201) of a charging plug is connected to the base (200), when the main body (100) is placed on the base (200), the main body (100) is electrically coupled to the base (200) via an electric coupler (300), when the main body (100) is separated from the base (200), the electric coupling of the main body (100) to the base (200) is interrupted via the electric coupler (300), and the electric coupler (300) includes the power receiving unit (108).

9. 9. The steam iron of claim 8, wherein a second water tank (202) and a second water pump (203) are arranged on the base (200), and when the main body (100) is arranged on the base (200), the first water tank (101) is connected to the second water tank (202), so that the second water pump (203) supplies water from the second water tank (202) to the first water tank (101), and when the main body (100) is separated from the base (200), the first water tank (101) is disconnected from the second water tank (202).

10. The steam iron according to claim 8, characterized in that the main body (100) is separably engaged with the base (200).

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