CN213937435U - Household appliance - Google Patents

Abstract

The application discloses a household appliance, which comprises a power input interface for obtaining external electric energy; the power output interface is used for being electrically connected with other equipment to provide electric energy for the other equipment. In the scheme, the power input interface of the household appliance can be used for realizing that other equipment and the household appliance obtain external electric energy from the same external electric energy interface, so that the number of the external electric energy interfaces can be reduced.

Description

Household appliance

Technical Field

The present application relates to the field of electronic technology, and in particular, to a home appliance.

Background

Household appliances which provide convenience for life are commonly used in families, such as televisions, air conditioners, refrigerators, washing machines, various small household appliances and the like. The household appliance is used for switching on and off the circuit and converting circuit parameters so as to realize the functions of controlling, adjusting, switching, detecting, protecting and the like of the circuit or the household appliance.

The household electrical appliance needs to use electricity for work, that is, needs to obtain electric energy, for example, a plug of the household electrical appliance is inserted into a socket of a household circuit to obtain external electric energy, and if a plurality of household electrical appliances exist, a plurality of sockets need to be provided respectively to obtain external electric energy, so that in the life of a household, the number of electric energy interfaces such as the sockets is large.

SUMMERY OF THE UTILITY MODEL

The application provides a household electrical appliance, can obtain outside electric energy, reducible outside electric energy interface's quantity from same outside electric energy interface with household electrical appliance by other equipment.

The application provides household electrical appliances, household electrical appliances include: the power input interface is used for acquiring external electric energy; the power output interface is used for being electrically connected with other equipment to provide the external electric energy for the other equipment.

Wherein, power input interface is including presetting a quantity first connecting terminal, power output interface includes presetting a quantity second connecting terminal, wherein, presetting a quantity first connecting terminal with it is a quantity to predetermine second connecting terminal one-to-one connects.

The household appliance further comprises a current detection circuit, wherein the current detection circuit is connected to the second connecting terminal and used for detecting the current of the second connecting terminal.

The current detection circuit comprises a current conversion element, wherein the current conversion element is connected to a second connecting terminal in the power output interface and is used for converting a first current of the second connecting terminal into a second current.

Wherein the current detection circuit further comprises a protection sub-circuit and a rectification sub-circuit connected with the current conversion element; the protection sub-circuit is used for shunting and/or dividing the output signal of the current conversion element; the rectifier sub-circuit is used for rectifying the output signal of the current conversion element.

Wherein the protection sub-circuit comprises a plurality of parallel branches respectively connected in parallel with the current converting elements, each of the parallel branches comprising at least one resistor; the rectifier sub-circuit comprises a rectifier diode, the rectifier diode is positioned on one of the parallel branches, and the output end of the rectifier diode is used as the output end of the current detection circuit.

Wherein, the current conversion element is at least one of a current transformer and a constantan wire.

The household appliance further comprises a control circuit, wherein the control circuit is connected with the output end of the current detection circuit and used for responding to the signal output by the output end to stop or start the household appliance.

And the second connecting terminal connected with the current detection circuit is used for being connected with a live wire or a zero wire.

The power input interface is a plug, and the power output interface is a socket; and/or the household appliance is a clothes dryer.

In the above scheme, the household electrical appliance obtains the external electric energy through the power input interface, the other devices are electrically connected with the household electrical appliance through the power output interface of the household electrical appliance, and the external electric energy can be indirectly obtained through the household electrical appliance, so that the external electric energy can be obtained from the same external electric energy interface by the other devices and the household electrical appliance, and the number of external electric energy interfaces can be reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a home device of the present application;

FIG. 2 is a schematic circuit diagram of an embodiment of a home device of the present application;

fig. 3 is a schematic diagram of the current detection circuit 13 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application. The terms "first", "second" and "first" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "and/or" herein is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, taking a and/or B as an example, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship. As used herein, "a number" means one or more and "a plurality" means two or more than two.

In order to improve the convenience of daily life of people, more and more household appliances walk into the daily life of people. Household appliances which are commonly used in households and provide convenience for life, such as televisions, air conditioners, refrigerators, washing machines, dish washing machines, various small household appliances and the like. Generally, the layout of the circuit wiring in the home is often determined when the house is decorated, and accordingly, external power interfaces such as sockets are often arranged at places where household appliances need to be installed, for example, a socket is arranged on a balcony for the power demand of a washing machine. With the development of scientific technology and the increasing requirements of people on life convenience, more household appliances for switching on and off circuits and converting circuit parameters so as to realize the functions of controlling, adjusting, switching, detecting, protecting and the like of the circuits appear. For example, besides a washing machine, the washing machine can also be provided with a clothes dryer to realize different functions of washing, drying and the like of clothes; except the dish washer, the dish washer also can be provided with a disinfection cabinet to realize different functions of washing, disinfecting and the like of bowls.

It is understood that the household electrical appliance needs power for its operation, i.e. needs to obtain power, for example, a plug of the household electrical appliance is plugged into a socket of the household electrical circuit to obtain external power, and if there are multiple household electrical appliances, multiple sockets need to be provided to obtain external power, respectively. Taking the washing machine and the clothes dryer both placed on a balcony with only one socket as an example, when people need to wash clothes, the plug of the washing machine is inserted into the socket to obtain electric energy for the washing machine to work, then if the clothes need to be dried, the connection between the plug and the socket of the washing machine needs to be disconnected, the plug of the clothes dryer is inserted into the socket to obtain the electric energy for the clothes dryer to work, and therefore, the same socket can only be used for one household appliance in the washing machine and the clothes dryer to work. Under the condition that the quantity of circuit wiring and sockets of a family is limited, the quantity of external electric energy interfaces such as the sockets cannot meet the power supply requirement of household electrical appliance equipment. Therefore, the application provides a household appliance, which can solve the problem that a plurality of devices need a large number of external electric energy interfaces.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of an embodiment of a home appliance 10 of the present application; fig. 2 is a circuit diagram of an embodiment of the home device 10 according to the present application.

The home device 10 includes a power input interface 11 and a power output interface 12. In order to obtain external power and realize normal operation of various home appliances 10, the home appliance 10 includes a power input interface 11 for obtaining external power. After the power input interface 11 is connected to the external power interface, the household electrical appliance 10 can obtain the power required by the work after the work mode is started. In order to reduce the need for external power interfaces for other devices, the home device 10 includes a power output interface 12, and the power output interface 12 is used to electrically connect with other devices to provide external power for other devices. The other devices are electrically connected with the household electrical appliance 10 through the power output interface 12 of the household electrical appliance 10 to obtain external electric energy, and the household electrical appliance 10 itself obtains the external electric energy through the power input interface 11, so that the household electrical appliance 10 and the other devices only need one external electric energy interface, and the external electric energy through the external electric energy interface is used for not only electric energy required by the work of the household electrical appliance 10, but also electric energy required by the work of the other devices. The number of other devices may be several, and the other devices may be electrically connected to the home appliance 10 through the power output interface 12, which is not limited herein. The power input interface 11 may be a plug or other electronic product capable of inputting electric energy, and the power output interface 12 may be a socket or other electronic product capable of outputting electric energy.

In an embodiment, the household electrical appliance 10 is a clothes dryer, and the other appliances are clothes washing machines, and the clothes dryer includes a power input interface 11 such as a plug and a power output interface 12 such as a socket. The plug of the dryer is plugged into the socket of the household circuit, thereby obtaining the domestic electricity of the Chinese household circuit including but not limited to 220V and 50 HZ. The washing machine is connected with a socket on the clothes dryer through a power input interface 11 such as a plug, so that electric energy required by work is obtained from the clothes dryer. Compared with the washing machine and the clothes dryer which are respectively connected with the external electric energy interfaces, in the embodiment of the application, after the washing machine is electrically connected with the power output interface 12 of the clothes dryer, the external electric energy obtained by the clothes dryer can meet the electric energy required by the work of the clothes dryer and the electric energy required by the work of the washing machine connected to the socket of the clothes dryer, the washing machine and the clothes dryer only need one interface for obtaining the external electric energy, and the number of the interfaces for obtaining the external electric energy can be reduced. It is understood that in another embodiment, the household electrical appliance 10 can be interchanged with other appliances, i.e., the household electrical appliance 10 is a washing machine and the other appliances are clothes dryers. The foregoing application embodiments are merely exemplary, and the home device 10 and other devices may also be other electronic devices, and the home device 10 and other devices are not specifically limited herein.

In a power supply line for electricity used by Chinese people, the alternating current power supply voltage of the transmitted commercial power is 220 volts. In order to provide a convenient power conversion function for the alternating current, the power transmission can comprise a live wire and a zero wire, or for leakage protection, the power transmission can also comprise a live wire, a zero wire and a grounding wire. In order to enable the household electrical appliance 10 to input and output electric energy, the power input interface 11 includes a preset number of first connection terminals, and the power output interface 12 includes a preset number of second connection terminals. The first connecting terminals with the preset number are connected with the second connecting terminals with the preset number in a one-to-one correspondence mode. After the first connection terminal and the second connection terminal are correspondingly connected, the electrical connection between the household appliance 10 and other devices can be realized.

In an application scenario, the power input interface 11 has two first connection terminals, and the number of the second connection terminals of the power output interface 12 of the household appliance 10 is two, where the two first connection terminals are respectively connected to a live wire and a zero wire for power transmission; or, the power input interface 11 has three first connection terminals, and the number of the second connection terminals of the power output interface 12 of the household electrical appliance 10 is three, where the three first connection terminals are respectively connected to the live wire, the zero wire and the ground wire for power transmission. As can be appreciated, the second connection terminal connected to the live line corresponds to the first connection terminal connected to the live line; the second connecting terminal is correspondingly connected with the zero line and the first connecting terminal is connected with the zero line; the second connection terminal connected to the ground line corresponds to the first connection terminal connected to the ground line.

As the home device 10 becomes more powerful, the operating power in different functional modes differs greatly. The normal working current of the power output interface 12 for general household use is within 16A, and if the power output interface 12 provides a large amount of electric energy for the household appliance 10 or other devices at the same time, it supports a plurality of devices to work at a large working power at the same time, and a dangerous situation of abnormal current often occurs. In order to detect the current of other devices, the household electrical appliance 10 may further include a current detection circuit 13, where the current detection circuit 13 is disposed on the power output interface 12 and is used for detecting the current flowing through other devices. In a disclosed embodiment, the current detection circuit 13 is connected to the second connection terminal in the power output interface 12 for detecting the current of the second connection terminal. The second connection terminal connected with the current detection circuit 13 is used for being connected with a live wire or a zero wire, so that the current detection circuit 13 can be used for detecting the current on the live wire of other equipment or detecting the current on the zero wire of other equipment.

Generally, the home appliance 10 is often actively stopped when power is not supplied, or after the home appliance is finished, or passively stopped under manual control, and the stop of the home appliance 10 is related to the home appliance itself, so that the home appliance 10 does not affect its own operation due to the operation of other devices. Since the household electrical appliance 10 is electrically connected to other devices through the power output interface 12, in order to avoid that the current exceeds the preset current of the household electrical appliance due to the fact that the household electrical appliance 10 and other devices are simultaneously in the high-power operating state, the household electrical appliance 10 may further include a control circuit to control the operating state thereof according to the current conditions of the other devices. Specifically, the control circuit is connected to the output terminal of the current detection circuit 13, and is configured to stop or start the operation of the home appliance 10 in response to a signal output from the output terminal of the current detection circuit 13.

In an application embodiment, taking the home appliance 10 as a clothes dryer and other devices as a washing machine as an example, when the current detection circuit 13 detects that the current of the washing machine is large, a signal is output to the control circuit, so that the control circuit can control the clothes dryer to stop working; after the current detection circuit 13 detects that the current of the washing machine becomes small, a signal is output to the control circuit, so that the control circuit can control the clothes dryer to start and work, therefore, under the condition that the washing machine and the clothes dryer are electrically connected through the power output interface 12, in order to avoid that the current exceeds the preset current of the household power consumption when the washing machine and the clothes dryer are simultaneously in a high-power working state, the control circuit of the clothes dryer can control the working state of the control circuit according to the current condition of the washing machine.

In this way, the other devices are electrically connected to the household electrical appliance 10 through the power output interface 12 of the household electrical appliance 10, and the household electrical appliance 10 obtains the external electrical energy through the power input interface 11, so that the other devices do not need to obtain the external electrical energy, but indirectly obtain the electrical energy through the household electrical appliance 10, a plurality of devices share one power input interface 11 to obtain the external electrical energy, and the number of the power input interfaces 11 for obtaining the external electrical energy can be reduced.

To further illustrate the operation principle of the current detection circuit 13, please refer to fig. 3, and fig. 3 is a schematic diagram of the current detection circuit 13 according to an embodiment of the home appliance 10 of the present application. Please refer to fig. 1 to fig. 3, a detailed description is given of the household electrical appliance 10 and the current detection circuit 13 thereof.

The current detection circuit 13 includes a current conversion element 131, a protection sub-circuit 132, and a rectifier sub-circuit 133.

The current converting element 131 is connected to the second connection terminal of the power output interface 12, and is configured to convert the first current of the second connection terminal into the second current. As shown in fig. 3, the terminals a and b are connected to the second connection terminal of the power output interface 12. Electronic devices such as the household electrical appliance 10 often have a large working power and a large working current, and the working current of the current detection circuit 13 is relatively small, so that the current conversion element 131 can be used to convert a large current into a small current, thereby preventing the current detection circuit 13 from being burnt out due to overcurrent. The current in the power generation, transformation, transmission, distribution and utilization lines varies greatly from a few amperes to tens of thousands of amperes, and therefore, it is very dangerous to directly detect the first current, so that the current conversion element 131 plays a role in current transformation and electrical isolation. The current converting element 131 is an element that converts the first current into the second current, and the conversion ratio of the first current to the second current can be set according to requirements, including but not limited to the first current being 10 times, 100 times, 1000 times, etc. of the second current.

In an embodiment, the Current transformation element 131 is at least one of a Current Transformer (CT) and a constantan wire. The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding, is connected in series with a second connecting terminal connected with a live wire or a zero line, and realizes the purpose of converting large current of other equipment into small current of the current detection circuit 13. The constantan wire is a resistance alloy with copper and nickel as main components, has a low resistance temperature coefficient, a wide use temperature range and can realize overcurrent protection.

The protection sub-circuit 132 is connected to the current conversion element 131, and is configured to shunt and/or divide an output signal of the current conversion element 131. When the protection sub-circuit 132 is used for voltage division, under the condition that the total voltage is not changed, the protection sub-circuit is connected in series with the rest of circuits to drop a part of voltage to the protection sub-circuit, so that the voltage of the rest of circuits is reduced, and the voltage of the signal output by the output end of the current detection circuit 13 can be reduced. When the protection sub-circuit 132 is used for shunting, it is connected in parallel with the rest of the circuits, and a part of the current passes through the protection sub-circuit 132, so that the current passing through the rest of the circuits is reduced, and the current of the signal output by the output terminal of the current detection circuit 13 can be reduced. In an embodiment, the protection sub-circuit 132 includes a plurality of parallel branches respectively connected in parallel with the current converting element 131, and each parallel branch includes at least one resistor, so as to realize the shunting and/or voltage division of the output signal of the current converting element 131. The number of the parallel branches can be set according to needs, the number of the resistors and the resistance value of each parallel branch can also be set according to needs, and the circuit compositions of different parallel branches can be the same or different, and are not particularly limited herein. In fig. 3, the terminals c and d are output terminals of the current detection circuit 13, and since the protection sub-circuit 132 can shunt and/or divide the output signal of the current conversion element 131, the current and/or voltage of the output signal of the output terminal of the current detection circuit 13 is small. The rectifying sub-circuit 133 is connected to the current converting element 131, and is configured to rectify the output signal of the current converting element 131, so that the signal output by the output terminal of the current detecting circuit 13 is a rectified output signal. Since the magnitude of the forward and reverse currents is different, the rectifier circuit 133 converts the alternating current into the direct current to adjust the form of the current. The rectifying sub-circuit 133 includes a rectifying diode, and the rectifying diode is located on one of the parallel branches, and an output end of the rectifying diode is used as an output end of the current detection circuit 13, so that a current signal of a subsequent circuit connected to the output end of the current detection circuit 13 is direct current. In the positive half cycle of the alternating current, the rectifier diode is conducted, so that the current of the output signal of the current conversion element 131 is completely the same as the voltage waveform; in the negative half cycle of the alternating current, the rectifier diode is in a reverse cut-off state, and the output signal of the current conversion element 131 is almost zero, so that the alternating current voltage with positive and negative changes into a unidirectional pulsating voltage by utilizing the unidirectional conductivity of the rectifier diode. The rectifier diode is periodically turned on and off to rectify an output signal of the current conversion element 131 to obtain a pulsating direct current. In fig. 3, the rectifying sub-circuit 133 is connected to the terminal c, and in another embodiment, the rectifying sub-circuit 133 may also be connected to the terminal d.

It is understood that the protection sub-circuit 132 and the rectifier sub-circuit 133 can be increased or decreased as needed, so that in an embodiment, the current detection circuit 13 can only have the current conversion element 131; in another embodiment, the current detection circuit 13 further includes a protection sub-circuit 132 and a rectifying sub-circuit 133 connected to the current conversion element 131 in addition to the current conversion element 131, and the number of the protection sub-circuit 132 and the rectifying sub-circuit 133 can be set by users, which is not limited in detail herein.

In one embodiment, the home device 10 further includes a control circuit connected between the terminals c and d in fig. 3. The current of the second connection terminal detected by the current detection circuit 13 connected to the second connection terminal of the power output interface 12 is also the current value of other devices, so that the control circuit connected to the output terminal of the current detection circuit 13 controls the stop or start of the operation of the household electrical appliance 10 in response to the signal output by the output terminal of the current detection circuit 13, so that the control circuit of the household electrical appliance 10 can control the operation state of the household electrical appliance 10 according to the current values of other devices. As shown in fig. 3, the terminals c and d are used to connect to a control circuit of the household electrical appliance 10, so that the signal output by the current detection circuit 13 is transmitted to the control circuit, so that the control circuit stops or starts the operation of the household electrical appliance 10.

In an application scenario, the home device 10 sets an operating current I1 according to its own operating power, the operating current obtained by the control circuit of the home device 10 to the other devices is I2, and the operating logic of the control circuit of the home device 10 is as follows: when the sum of the current I1 and the current I2 is smaller than a first preset current threshold, the control circuit does not interfere with the operation of the household appliance 10, and the household appliance 10 and other devices operate normally; when the current detection circuit 13 detects that the operating current I2 of other devices is large and the sum of I1 and I2 is greater than the first preset current threshold, the control circuit stops the operation of the household appliance 10 in response to the signal output by the output terminal of the current detection circuit 13. In order to flexibly control the operating state of the home appliance 10, after the control circuit stops the operation of the home appliance 10, the current detection circuit 13 continues to detect the operating current I2 of other devices, and when the sum of I1 and I2 is smaller than the second preset current threshold, the control circuit continues to operate the home appliance 10. The magnitude of the second preset current threshold is smaller than the first preset current threshold. In order to prevent the operating current of other devices from fluctuating back and forth, which causes the sum of I1 and I2 to fluctuate back and forth around the first preset current threshold, so that the control circuit does not stop or start the operation of the household appliance 10, the second preset current threshold may be smaller in size.

In one embodiment, the household electrical appliance 10 includes a control circuit, and the current detection circuit 13 of the household electrical appliance 10 includes a current conversion element 131, a protection sub-circuit 132 and a rectification sub-circuit 133, and the current passing through the second connection terminal of the power output interface 12 converts the first current into a second current under the action of the current conversion element 131; the protection sub-circuit 132 is used for adjusting the current and/or voltage of the output signal of the output end of the current detection circuit 13; the output signal of the current conversion element 131 is rectified by the rectifier sub-circuit 133, so that the control circuit connected to the current detection circuit 13 has a small current and/or voltage, and the control circuit is protected.

In one embodiment, the household appliance 10 is a clothes dryer and the other appliance is a clothes washer. The clothes dryer comprises a power input interface 11, a power output interface 12, a current detection circuit 13 and a control circuit. The power input interface 11 of the clothes dryer is a plug and comprises three first connecting terminals which are respectively used for being connected with a live wire, a zero wire and a grounding wire; and the power output interface 12 is a socket, comprising three second connection terminals for connection with a live wire, a neutral wire, and a ground wire, respectively. The plug of the washing machine is inserted into the socket of the clothes dryer, the plug of the clothes dryer is connected with the external electric energy interface, and therefore the live wire, the zero line and the grounding wire of the washing machine and the clothes dryer are respectively connected and are connected with the connecting terminals, used for connecting the live wire, the zero line and the grounding wire, of the external electric energy interface together, and then the washing machine and the clothes dryer obtain external electric energy from the same external electric energy interface.

The current detecting circuit 13 of the dryer includes a current converting element 131, a protection sub-circuit 132 and a rectifying sub-circuit 133, and a control circuit, and is connected to the live wire of the socket. As shown in fig. 3, the current conversion element 131 is a current transformer, and the rectifier sub-circuit 133 is a rectifier diode; the protection sub-circuit 132 comprises 3 parallel branches connected in parallel with the current transformers, respectively, wherein two parallel branches comprise a resistor R1 and the other parallel branch comprises a resistor R2 and a rectifying diode connected in series. The current transformer connected to the live line of the clothes dryer socket converts the current flowing through the live line of the clothes dryer into smaller current, after the reduced current signal is divided by the two parallel branches including the resistor R1, the voltage value between the other parallel branch including the resistor R2 and the rectifier diode becomes smaller, so that the output signal at the output end of the current detection circuit 13 is safer. In addition, a control circuit of the clothes dryer is connected between a terminal c and a terminal d on a parallel branch comprising a resistor R2 and a rectifying diode, wherein the resistor R2 can divide voltage, and the rectifying diode can change alternating voltage with positive and negative changes into unidirectional pulsating voltage by utilizing unidirectional conductivity of the rectifying diode, so that the current and the voltage of the control circuit are relatively small, and more safe and reliable current detection is realized.

The clothes dryer is provided with an operating current I1 according to the working power of the clothes dryer, the operating current of the clothes dryer obtained by a control circuit of the clothes dryer is I2, and the working logic of the control circuit of the clothes dryer is as follows: when the sum of I1 and I2 is smaller than a first preset current threshold value, the control circuit does not interfere with the operation of the clothes dryer, and the clothes dryer and the washing machine both work normally; when the current detection circuit 13 detects that the working current I2 of the washing machine is larger and the sum of I1 and I2 is larger than a first preset current threshold, the control circuit responds to a signal output by the output end of the current detection circuit 13 to stop the work of the clothes dryer; after the control circuit stops the clothes dryer, the current detection circuit 13 is continuously used for detecting the operating current I2 of the clothes dryer, and when the sum of I1 and I2 is smaller than a second preset current threshold value, the control circuit continuously operates the clothes dryer, so that the clothes dryer can control the self operation to start or stop according to the operating conditions of the clothes dryer such as the current of the clothes dryer.

In this way, the current converting element 131 connected to the second connection terminal converts the first current of the second connection terminal into the second current, and then the current of the second connection terminal is detected through the shunting and/or voltage division of the protection sub-circuit 132 and the rectification of the rectification sub-circuit 133, so that the current of the second connection terminal is detected, that is, the current of other devices and other working conditions are known, so that the household appliance 10 controls the working state of the household appliance according to the working conditions of other devices, and the household appliance 10 and other devices are prevented from being in a high-power working state at the same time.

The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.

Claims (8)

1. An appliance device, comprising:

the power input interface is used for acquiring external electric energy;

the power output interface is used for being electrically connected with other equipment to provide the external electric energy for the other equipment;

the power input interface comprises a preset number of first connecting terminals, the power output interface comprises a preset number of second connecting terminals, and the preset number of first connecting terminals are correspondingly connected with the preset number of second connecting terminals one by one; and/or, the household electrical appliance further comprises a current detection circuit, wherein the current detection circuit is connected to a second connecting terminal in the power output interface and is used for detecting the current of the second connecting terminal.

2. The home appliance according to claim 1, wherein the current detection circuit comprises a current conversion element connected to the second connection terminal for converting a first current of the second connection terminal into a second current.

3. The home appliance according to claim 2, wherein the current detection circuit further comprises a protection sub-circuit and a rectifier sub-circuit connected to the current conversion element;

the protection sub-circuit is used for shunting and/or dividing the output signal of the current conversion element;

the rectifier sub-circuit is used for rectifying the output signal of the current conversion element.

4. The home device of claim 3, wherein the protection sub-circuit comprises a plurality of parallel branches respectively connected in parallel with the current converting elements, each of the parallel branches comprising at least one resistor;

the rectifier sub-circuit comprises a rectifier diode, the rectifier diode is positioned on one of the parallel branches, and the output end of the rectifier diode is used as the output end of the current detection circuit.

5. The household appliance according to claim 3, wherein the current transformation element is at least one of a current transformer and a constantan wire.

6. The home device of claim 1, further comprising a control circuit coupled to the output of the current detection circuit for stopping or starting operation of the home device in response to the signal output from the output.

7. The household electrical appliance according to claim 1, wherein the second connection terminal connected to the current detection circuit is configured to be connected to a live wire or a neutral wire.

8. The household appliance according to any one of claims 1 to 7, wherein the power input interface is a plug, and the power output interface is a socket;

and/or the household appliance is a clothes dryer.

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