阅读说明：本技术 一种自动换挡电路及电烫斗 (Automatic gear shifting circuit and electric iron ) 是由 李福林 张燕 于 2021-01-25 设计创作，主要内容包括：本发明涉及家用电器领域,具体而言,涉及一种自动换挡电路及电烫斗。自动换挡电路包括控制器、温度传感器、第一继电器、第一发热装置、第二发热装置、控制开关和电路电源；电路电源的第一端连接控制开关的第一端,控制开关的第二端连接第一发热装置两端,控制开关的第二端连接第二发热装置两端,电路电源的第二端连接第二发热装置的第二端；控制器连接温度传感器和第一继电器；第一继电器连接控制开关,第一继电器能够改变控制开关的状态,用于改变第一发热装置和第二发热装置之间的串并联状态。本发明避免了电压过高的烧机状态,也避免了电压过低无法启动工作的情况发生。(The invention relates to the field of household appliances, in particular to an automatic gear shifting circuit and an electric iron. The automatic gear shifting circuit comprises a controller, a temperature sensor, a first relay, a first heating device, a second heating device, a control switch and a circuit power supply; the first end of the circuit power supply is connected with the first end of the control switch, the second end of the control switch is connected with the two ends of the first heating device, the second end of the control switch is connected with the two ends of the second heating device, and the second end of the circuit power supply is connected with the second end of the second heating device; the controller is connected with the temperature sensor and the first relay; the first relay is connected with the control switch, and the state of the control switch can be changed by the first relay, so that the series-parallel connection state between the first heating device and the second heating device can be changed. The invention avoids the burn-in state with overhigh voltage and the situation that the start-up work cannot be carried out due to overlow voltage.)

1. An automatic gear shifting circuit comprises a temperature sensor and a circuit power supply, and is characterized by further comprising a controller, a first relay, a first heating device, a second heating device and a control switch;

the first end of the circuit power supply is connected with the first end of the control switch, the second end of the control switch is connected with the first end and the second end of the first heating device, the second end of the control switch is connected with the first end and the second end of the second heating device, and the second end of the circuit power supply is connected with the second end of the second heating device;

the controller is connected with the temperature sensor and the first relay;

the first relay is connected with the control switch, and the first relay can change the state of the control switch and is used for changing the series-parallel connection state between the first heating device and the second heating device.

2. The automatic shift circuit of claim 1, wherein the control switch includes a first single pole double throw switch and a second single pole double throw switch;

the first single-pole double-throw switch is connected with the circuit power supply, the first movable end of the first single-pole double-throw switch is connected with the first end of the first heating device and the first end of the second heating device, and the second movable end of the first single-pole double-throw switch is connected with the second end of the first heating device and the immovable end of the second single-pole double-throw switch;

the first movable end of the second single-pole double-throw switch is connected with the second end of the second heating device, and the second movable end of the second single-pole double-throw switch is idle.

3. The automatic shift circuit of claim 1, wherein the control switch comprises a double pole double throw switch.

4. The automatic shift circuit of claim 1, further comprising a second relay and a circuit switch;

the controller is in signal connection with the second relay, a first end of the circuit switch is connected with a second end of the circuit power supply, and a second end of the circuit switch is connected with a second end of the second heating device and a second end of the control switch;

the second relay is in signal connection with the controller and the circuit switch respectively, and the second relay is used for controlling the on and off states of the circuit switch.

5. The automatic shift circuit according to claim 1, wherein the first heat generating means is an electric heating wire;

and/or the second heating device is an electric heating wire.

6. The automatic shift circuit according to claim 1, wherein the heat generation powers of the first and second heat generation devices are the same.

7. The automatic shift circuit of claim 1, wherein the water pump connected to the controller is a dc water pump.

8. The automatic shift circuit of claim 1, wherein the temperature sensor is a thermistor.

9. The automatic shift circuit of claim 1, wherein the controller and the first relay are both disposed on a control board.

10. An electric iron comprising an iron body and the automatic shifting circuit of any of claims 1-9, the automatic shifting circuit being disposed on the iron body.

Technical Field

The invention relates to the field of household appliances, in particular to an automatic gear shifting circuit and an electric iron.

Background

With the development of economy, the progress of society and the promotion of global integration, energy conservation, safety and high efficiency, travel function and privacy of electric appliances become the demands of many people, and the electric iron is used as a small practical electric appliance with strong privacy attribute and needs to meet the demands of people.

The common electric iron can only work with single voltage and can not be used when the voltage changes, and consumers can only use public electric appliances or increase the cost to purchase again when traveling or going out in business to form resource waste; to meet this demand, a wide voltage iron for changing the value of an input voltage by manual dialing has appeared on the market.

However, when using such irons, a burn-out or a failure to operate may result if the user forgets to shift the gear.

Disclosure of Invention

The invention aims to provide an automatic gear shifting circuit and an electric iron, which can automatically adjust the use voltage of the electric iron according to the input voltage and avoid the conditions of machine burning and the like caused by forgetting to shift gears.

The embodiment of the invention is realized by the following steps:

in a first aspect, the present invention provides an automatic shift circuit, including a controller, a temperature sensor, a first relay, a first heat generating device, a second heat generating device, a control switch, and a circuit power supply;

the first end of the circuit power supply is connected with the first end of the control switch, the second end of the control switch is connected with the first end and the second end of the first heating device, the second end of the control switch is connected with the first end and the second end of the second heating device, and the second end of the circuit power supply is connected with the second end of the second heating device;

the controller is connected with the temperature sensor and the first relay;

the first relay is connected with the control switch, and the first relay can change the state of the control switch and is used for changing the series-parallel connection state between the first heating device and the second heating device.

In an alternative embodiment, the control switch comprises a first single pole double throw switch and a second single pole double throw switch;

the first single-pole double-throw switch is connected with the circuit power supply, the first movable end of the first single-pole double-throw switch is connected with the first end of the first heating device and the first end of the second heating device, and the second movable end of the first single-pole double-throw switch is connected with the second end of the first heating device and the immovable end of the second single-pole double-throw switch;

the first movable end of the second single-pole double-throw switch is connected with the second end of the second heating device, and the second movable end of the second single-pole double-throw switch is idle.

In an alternative embodiment, the control switch comprises a double pole double throw switch.

In an optional embodiment, a second relay and a circuit switch are further included;

the controller is in signal connection with the second relay, a first end of the circuit switch is connected with a second end of the circuit power supply, and a second end of the circuit switch is connected with a second end of the second heating device and a second end of the control switch;

the second relay is in signal connection with the controller and the circuit switch respectively, and the second relay is used for controlling the on and off states of the circuit switch.

In an alternative embodiment, the first heating means is an electric heating wire;

and/or the second heating device is an electric heating wire.

In an alternative embodiment, the heat generating power of the first heat generating means and the second heat generating means is the same.

In an optional embodiment, the water pump connected to the controller is a direct-current water pump.

In an alternative embodiment, the temperature sensor is a thermistor.

In an alternative embodiment, the controller and the first relay are both disposed on a control board.

In a second aspect, the present invention provides an electric iron, comprising an iron body and the automatic shifting circuit of any of the foregoing embodiments, wherein the automatic shifting circuit is disposed on the iron body.

The embodiment of the invention has the beneficial effects that:

the controller controls the control switch through the first relay, the series-parallel connection state of the first heating device and the second heating device is controlled according to the control switch, when high voltage is input, the first heating device and the second heating device are controlled to be in a series connection state, when low voltage is input, the first heating device and the second heating device are controlled to be in a parallel connection state, the machine burning state with overhigh voltage is further avoided, and the situation that the starting work cannot be started due to overlow voltage is also avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of an automatic shift circuit in a parallel configuration in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram of an automatic shift circuit in a series configuration in accordance with an embodiment of the present invention;

FIG. 3 is another schematic diagram of an automatic shift circuit in a parallel state according to an embodiment of the present invention;

fig. 4 is another schematic diagram of an automatic shift circuit in a series state according to an embodiment of the present invention.

Icon: 1-circuit power supply; 2-a controller; 3-a first relay; 4-a first single pole double throw switch; 5-a second single pole double throw switch; 6-a first heat generating device; 7-a second heat generating device; 8-a circuit switch; 9-a second relay; 10-a direct-current water pump; 11-a control panel; 12-double pole double throw switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

In a first aspect, the present invention provides an automatic gear shifting circuit, comprising a controller 2, a temperature sensor, a first relay 3, a first heat generating device 6, a second heat generating device 7, a control switch and a circuit power supply 1; the first end of the circuit power supply 1 is connected with the first end of the control switch, the second end of the control switch is connected with the first end and the second end of the first heating device 6, the second end of the control switch is connected with the first end and the second end of the second heating device 7, and the second end of the circuit power supply 1 is connected with the second end of the second heating device 7; the controller 2 is connected with the temperature sensor and the first relay 3; the first relay 3 is connected to a control switch, and the first relay 3 can change the state of the control switch for changing the series-parallel state between the first heat generating device 6 and the second heat generating device 7.

When the first heating device 6 and the second heating device 7 are connected in series, the input voltage is respectively distributed on the first heating device 6 and the second heating device 7, so that the first heating device 6 and the second heating device 7 are prevented from being burnt out by the input high voltage; when the first heating device 6 and the second heating device 7 are connected in parallel, the heating voltage of the first heating device 6 and the second heating device 7 is the same as the input voltage, so that the situation that the first heating device 6 and the second heating device 7 cannot be started due to too low voltage is avoided.

That is, by changing the serial-parallel state of the first and second heat generating devices 6 and 7, the adaptability to the input voltage can be achieved, thereby ensuring the normal use of the electric iron.

Specifically, in the present embodiment, the change of the series-parallel connection state of the first heat generating device 6 and the second heat generating device 7 is realized by controlling the switch.

Wherein the control switch is changed in state by the first relay 3.

The input information of the first relay 3 is controlled by the controller 2.

That is, the controller 2 controls the first relay 3, and the first relay 3 changes the state of the control switch, thereby changing the series-parallel connection state of the first heat generating device 6 and the second heat generating device 7.

Specifically, when the controller 2 is in use, the controller 2 detects the input voltage, and when the controller 2 detects that the input voltage is a high voltage, the controller sends a series command to the first relay 3, and the first relay 3 makes the control switch perform corresponding adjustment and change, so that the states of the first heating device 6 and the second heating device 7 are changed into a series state; when the controller 2 detects that the input voltage is low voltage, a parallel connection instruction is sent to the first relay 3, the first relay 3 makes the control switch change and adjust correspondingly, and the state between the first heating device 6 and the second heating device 7 is adjusted to be parallel connection.

Due to the arrangement, the controller 2 can perform self real-time judgment according to the range of the input voltage, and the situation that the electric iron is burnt or the electric iron cannot be started normally due to the fact that the electric iron is forgotten to shift gears artificially is avoided.

In an alternative embodiment, the control switches comprise a first single pole double throw switch 4 and a second single pole double throw switch 5; the immobile end of the first single-pole double-throw switch 4 is connected with the circuit power supply 1, the first mobile end of the first single-pole double-throw switch 4 is connected with the first end of the first heating device 6 and the first end of the second heating device 7, and the second mobile end of the first single-pole double-throw switch 4 is connected with the second end of the first heating device 6 and the immobile end of the second single-pole double-throw switch 5; the first movable end of the second single-pole double-throw switch 5 is connected with the second end of the second heating device 7, and the second movable end of the second single-pole double-throw switch 5 is idle.

Specifically, in this embodiment, the control switches are two single-pole double-throw switches, which are respectively the first single-pole double-throw switch 4 and the second single-pole double-throw switch 5, and the change of the serial-parallel connection state of the first heat generating device 6 and the second heat generating device 7 is realized through the two single-pole double-throw switches.

More specifically, in the present embodiment, as shown in fig. 1, when the stationary terminal of the first single-pole double-throw switch 4 is connected to the first moving terminal of the first single-pole double-throw switch, and the stationary terminal of the second single-pole double-throw switch 5 is connected to the first moving terminal of the second single-pole double-throw switch 5, the first heat generating device 6 and the second heat generating device 7 are connected in parallel.

As shown in fig. 2, the stationary end of the first single-pole double-throw switch 4 is connected to the second movable end of the first single-pole double-throw switch 4, and the stationary end of the second single-pole double-throw switch 5 is connected to the second power of the second single-pole double-throw. At this time, the relationship between the first heat generating device 6 and the second heat generating device 7 is in series.

The first relay 3 can change the connection state of the fixed ends of the first single-pole double-throw switch 4 and the second single-pole double-throw switch 5 under the control of the controller 2, and further change the series-parallel connection state of the first heating device 6 and the second heating device 7.

In an alternative embodiment, the control switch comprises a double pole double throw switch 12.

In this embodiment, the control switch may also be configured as a double-pole double-throw switch 12, which is equivalent to connecting the stationary terminal of the first single-pole double-throw switch 4 and the stationary terminal of the second single-pole double-throw switch 5 together to form the double-pole double-throw switch 12.

In this case, the double pole double throw switch 12 is connected in the same manner as the two single pole double throw switches, and the series-parallel state of the first heat generating device 6 and the second heat generating device 7 can be changed.

In an alternative embodiment, a second relay 9 and a circuit switch 8 are also included; the controller 2 is in signal connection with a second relay 9, a first end of a circuit switch 8 is connected with a second end of the circuit power supply 1, and a second end of the circuit switch 8 is connected with a second end of the second heating device 7 and a second end of the control switch; the second relay 9 is respectively connected with the controller 2 and the circuit switch 8 through signals, and the second relay 9 is used for controlling the on and off states of the circuit switch 8.

In this embodiment, through the setting of the second relay 9 and the circuit switch 8, the on and off control of the whole automatic gear shifting circuit can be realized, that is, the circuit switch 8 is the main switch of the automatic gear shifting circuit, and after the circuit power supply 1 is connected and the circuit switch 8 is turned on, the whole automatic gear shifting circuit can form a closed loop.

In an alternative embodiment, the first heat-generating means 6 are electric heating wires;

and/or the second heating device 7 is an electric heating wire.

In the present embodiment, the first heat generating device 6 and the second heat generating device 7 are both electric heating wires.

It should be noted that the first heat generating device 6 and the second heat generating device 7 can be electric heating wires, but they are not limited to electric heating wires, and they can also be other heating devices, such as heat exchangers, electromagnetic heating, etc., that is, they can only heat the electric iron, so that the electric iron can be used normally.

It should be noted that the first heat generating device 6 and the second heat generating device 7 may be the same structural device, or may be different structural devices, as long as they can satisfy the normal heating use of the electric iron.

In an alternative embodiment, the heat generating power of the first heat generating means 6 and the second heat generating means 7 is the same.

When the heating powers of the first heating device 6 and the second heating device 7 are the same, the heating level of the automatic gear shifting circuit to the electric iron can be conveniently adjusted.

It should be noted that the heating powers of the first heating device 6 and the second heating device 7 may be the same, or may be different, and specifically, the design may be performed according to the characteristics and the applicable environment of the electric iron, as long as the heating function required by the electric iron is satisfied.

In an alternative embodiment, the water pump connected to the controller 2 is a direct-current water pump 10.

In this embodiment, the amount of steam can be adjusted by using the dc water pump 10 according to the amount of heat generated in the iron plate of the electric iron, and stable steam can be output by using the amount of heat generated in the iron plate at maximum efficiency.

In an alternative embodiment, the temperature sensor is a thermistor.

It should be noted that the temperature sensor may be a thermistor, but it is not limited to a thermistor, and it may be another type of temperature sensor, that is, as long as the output temperature of the electric iron can be detected by the temperature sensor.

In an alternative embodiment, the controller 2 and the first relay 3 are both provided on the control board 11.

Specifically, in this embodiment, the controller 2, the first relay 3, and the second relay 9 are all disposed on the control board 11, so that they are integrated into a whole, which is convenient for assembly.

In a second aspect, the present invention provides an electric iron comprising an iron body and the automatic shifting circuit of any one of the preceding embodiments, the automatic shifting circuit being disposed on the iron body.

In the present embodiment, the heating principle of the electric iron is as follows:

when the alternating-current voltage is input, after the controller 2 on the control board 11 detects the temperatures of the first heating device 6 and the second heating device 7 through the temperature sensors, the controller 2 sends a control instruction to the first relay 3 to control the on and off of the first relay 3, so that the uniform heat output of wide-voltage input (100-240V) is realized, and the series-parallel connection state between the first heating device 6 and the second heating device 7 is controlled. At this time, when the heating temperature of the electric iron does not reach the range, the first relay 3 is switched on, and the first heating device 6 and the second heating device 7 continue to heat; when the heating temperature of the electric iron reaches the temperature range, the first relay 3 is closed, and the first relay 3 and the second relay 9 stop heating.

In the present embodiment, the steam principle of the electric iron is as follows:

when the electric iron is selected to be in the 3/4 gear, when the heat generation quantity of the first heating device 6 and the second heating device 7 enables the ironing board to reach a certain temperature, the power supply board controls the direct-current water pump 10 to work when the handle of the electric iron is held by a hand, water is pumped from the water tank to the ironing board, when the water meets the ironing board which is hot enough, liquid water in the air storage chamber is converted into steam, the steam is sprayed outwards through the through hole in the ironing board, and the heat quantity of the ironing board is intelligently controlled to be output through the controller 2.

When the low-voltage alternating current is input (100V-120V), the low-voltage alternating current is converted into a corresponding direct-current low-voltage low-level signal after being stepped down by the power panel, the corresponding direct-current low-level signal is input into the controller 2, when the controller 2 detects the low-level voltage, the first relay 3 is controlled to switch the control switch, the relation between the first heating device 6 and the second heating device 7 is switched into a parallel connection mode, when the electric iron works, the low-voltage power (100V-120V) is simultaneously heated on the first heating device 6 and the second heating device 7 which are connected in parallel, the working voltage of the first heating device 6 and the second heating device 7 is still in a working range (parallel connection and same voltage, 100V and 120V), and the heating power is about 1000W, as shown in fig. 1 and fig. 3.

When the controller 2 detects the high level voltage, the first relay 3 is controlled to switch the control switch to switch the first heating device 6 and the second heating device 7 to the series connection mode, when the electric iron works, the high voltage power supply (220V-240V) is simultaneously heated at two ends of the first heating device 6 and the second heating device 7 which are connected in series, so that the working voltage of the first heating device 6 and the second heating device 7 is still in the working range (series voltage division, 100-120V), and the heating power is about 1000W, as shown in fig. 2 and fig. 4.

The embodiment of the invention has the beneficial effects that:

the controller 2 controls the control switch through the first relay 3, and controls the series-parallel connection state of the first heating device 6 and the second heating device 7 according to the control switch, when a high voltage is input, the first heating device 6 and the second heating device 7 are controlled to be in the series connection state, and when a low voltage is input, the first heating device 6 and the second heating device 7 are controlled to be in the parallel connection state, so that the burn-out state with the overhigh voltage is avoided, and the situation that the start-up work cannot be carried out due to the overlow voltage is also avoided.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.