Embodiments of this application provide a wireless charger, and relate to the field of charging device technologies. The wireless charger includes a wireless charging module, a first fan, a housing including a contact plate used for contact with the rear surface of the terminal device, and an air intake vent disposed at a position that is of the housing and that is close to the first fan, and an airflow guide structure disposed on a side that is of the housing and that is adjacent to the contact plate. The airflow guide structure extends toward the display surface of the terminal device.

An AC-DC converter includes three phase terminals, first and second DC terminals, a first converter stage for converting between the AC signal and a first signal at first and second intermediate nodes, a second converter stage to convert between a second signal at third and fourth intermediate nodes and the DC signal at the first and second DC terminals. The second converter stage has a first active switch. A link connects the first and third intermediate nodes and the second and fourth intermediate nodes. A current injection circuit has second active switches. In a first mode, the first active switch and the second active switches are operated through PWM. In a second mode, the third and fourth intermediate nodes are continuously connected to the first and second DC terminals such that the second converter stage is inoperative and the second active switches are operated through PWM.

A method for automatically correlating at least one cooktop utensil with at least one cooking zone of an inductive cooktop having a plurality of cooking zones which are inductively heated by at least one respective heating coil, includes: providing the cooktop with a cooktop controller configured to drive the heating coils with a correlation signal; providing the at least one cooktop utensil with an induction coil inductively couplable with the heating coils of the cooktop and a transmitter unit; supplying the transmitter unit with an operation power when a voltage is induced by at least one of the heating coils into the induction coil of the cooktop utensil that is placed on the cooking zone associated with this heating coil; transmitting, by the transmitter unit of the cooktop utensil, by the operating power, a response signal that identifies the cooktop utensil and correlates with the induced correlation signal.

The present invention provides an electric stove having a single free-zone burner, the electric stove comprising: a controller which outputs a first output signal comprising a first output level signal and a first synchronization signal, and a second output signal comprising a second output level signal and a second synchronization signal; a first inverter which successively receives the first output signal and second synchronization signal, and outputs first high-frequency power to a first working coil; and a second inverter which successively receives the first synchronization signal and second output signal, and outputs second high-frequency power to a second working coil, wherein the first inverter and second inverter simultaneously output first high-frequency power and second high-frequency power when the first synchronization signal and second synchronization signal are both received.

A method for assembling a vacuum insulation assembly for an appliance is provided. The method includes steps of defining a plurality of spaces on a guide and positioning the guide flush with an inner surface of a panel. The method further includes a step of determining positions of a plurality of clips using the plurality of spaces of the guide. Another step of the method includes coupling the plurality of clips with the inner surface of the panel. The method also includes separating the guide from the panel and coupling permeable tubing with the plurality of clips.

A structure for wireless communication having a plurality of conductor layers, an insulator layer separating each of the conductor layers, and at least one connector connecting two of the conductor layers wherein an electrical resistance is reduced when an electrical signal is induced in the resonator at a predetermined frequency. The structure is capable of transmitting or receiving electrical energy and/or data at various near and far field magnetic coupling frequencies.

The present invention relates to an induction cooking hob (10) including at least one cooking area (12), wherein the cooking area (12) comprises at least three induction coils (14). The induction coils (14) of at least one cooking area (12) are arranged side-by-side and in series. Each induction coil (14) of at least one cooking area (12) has an elongated shape. The longitudinal axes of the induction coils (14) within one cooking area (12) are arranged in parallel. Each induction coil (14) of the cooking area (12) is associated with a dedicated induction generator (16). The induction generators (16) are connected or connectable to at least one current line (18). The induction generators (16) are connected to and controlled or controllable by at least one control unit (20). Requested powers (rP) for each used induction generator (16) are adjusted or adjustable independent from each other by a user interface (22). Instant powers (iP) of the induction generators (16) within a cycle pattern (T1, T2, . . . , T11) are controlled or controllable independent from each other by the control unit (20). Further, the present invention relates to a method for controlling a cooking area.

A dielectric constant estimation device which can estimate a dielectric constant of an object with high accuracy in a non-contact state even when a shape of the object is indefinite, and a microwave heating device equipped with the dielectric constant estimation device. The dielectric constant estimation device includes a transmitting antenna and a receiving antenna which can switch a polarized wave of an electromagnetic wave between a TE wave and a TM wave. Based on a reflected wave of the TE wave and a reflected wave of the TM wave from the object, the dielectric constant estimation device calculates a TM/TE reflection ratio, and compares the calculated TM/TE reflection ratio and dielectric constant data of theoretical values stored in a memory part in advance in the form of database with each other so that a dielectric constant of the object is estimated.

A refrigerating appliance (100) is provided, which comprises: —at least one storage compartment (110) for storing goods to be refrigerated; —a refrigeration circuit comprising at least one evaporator (170) associated with said at least one storage compartment (110); —a control unit (172) configured to control operation of the refrigerating appliance (100); —at least one fan (171), configured to promote heat exchange between said at least one evaporator (170) and the at least one storage compartment (110), said at least one fan (171) being further configured to be switched between a first operative condition in which said at least one fan (171) is commanded to rotate, and a second operative condition in which said at least one fan (171) is commanded to not rotate; —a MEMS pressure sensor (180) configured to measure the pressure inside said at least one storage compartment (110) and in signal communication with the control unit (172) for providing a pressure signal proportional to the measure of the pressure inside said at least one storage compartment (110), wherein the control unit (172) is configured to control the operation of the refrigerating appliance (100) in function of said pressure signal received when said at least one fan (171) is in the first operative condition.

A charging device, a charging method and a terminal, an output end of the main charging circuit and output ends of the at least two secondary charging circuits are connected to a battery of an electronic device, and the output end of the main charging circuit is used for supplying power for an internal chip of the electronic device, disconnecting a connection between the main charging circuit and the battery when a voltage of the output end of the main charging circuit reaches a voltage required by the internal chip, and supplying power for the battery through the output ends of the at least two secondary charging circuits, in this way, charging time is shortened and a purpose of fast charging a battery is achieved.