Abstract: A line current iM(k0) of an M side of a first direct-current transmission line is collected at a moment k0. A line current iM(k0?ts) thereof is collected at k0?ts. At a moment k0, a differential value diM(k0) of a current of the side of the first direct-current transmission line is calculated according to the line current iM(k0) and the line current iM(k0?ts). It is determined whether the differential value diM(k0) of the current meets a protection enabling criteria. If so, direct-current protection for the M side of the first direct-current transmission line is enabled. A line current iM(j) of the M side of the first direct-current transmission line is collected at a moment j. A line current iM(j?ts) thereof is collected at a moment j?ts. A differential value diM(j) of the current of the M side of the first direct-current transmission line at the moment j is calculated according to the line current iM(j) and the line current iM(j?ts).

Abstract: An inner cover assembly and a lid for a cooking utensil. The inner cover assembly includes: an inner cover having a major axis and a minor axis orthogonal each other; and a seal ring fitted over an outer peripheral edge of the inner cover. When the seal ring is not fitted over the inner cover in a natural state, a smooth transition is provided along an extending direction of the seal ring, and a maximum inner diameter of the seal ring is less than a length of the major axis of the inner cover.

Abstract: Disclosed is a split-type electric pressure cooker. The cooker comprises a cooker body and a cooker lid, the cooker body being provided with a power supply device. The split-type electric pressure cooker further comprises: a mechanical vent valve, comprising a valve seat and a valve cover, wherein the valve seat is fixedly mounted on the cooker lid, and the valve cover can be movably mounted on the valve seat; a power transmitting device mounted on the cooker body and able to be electrically connected to the power supply device; a power receiving device mounted on the cooker lid; and a motor driving device mounted on the cooker lid and electrically connected to the power receiving device, the motor driving device being used for driving the valve cover to move so as to open or close the mechanical vent valve. With the cooperation of the power transmitting device and the power receiving device, the power transmission is realized between the cooker body and the cooker lid.

Abstract: The present disclosure provide a cooking appliance, comprising a pot body assembly (2) and a pot cover assembly (1), wherein the pot cover assembly can cover the pot body assembly in an openable and closable manner, and the cooking appliance comprises a cover-closed state and a cover-open state, wherein the cooking appliance further comprises a first control panel (3) working in the cover-open state and a second control panel (4) working in the cover-closed state, wherein the cover assembly (1) covers the first control panel (3) in the cover-closed state.

Abstract: A pressure cooking apparatus, a method and device for controlling the same are provided. During a heating process of the apparatus, the device detects a pressure value inside the inner liner, a first temperature value when the detected pressure value rises to a first preset pressure threshold, and a second temperature value when the detected pressure value drops from the preset first pressure threshold to a second preset pressure threshold. Next the device acquires a temperature reference value according to a preset setting strategy using the first temperature value and the second temperature value and then compares a current temperature value detected by the temperature sensor with the temperature reference value. Finally, the device starts or stops the heating process based on the comparison result, thus reducing the on/off frequency of the apparatus and controlling the pressure inside the cooking apparatus more precisely and smoothly.

Abstract: An inner cover assembly and a lid for a cooking utensil and a cooking utensil having the same are provided. The inner cover assembly includes: an inner cover having a major axis and a minor axis orthogonal each other; and a seal ring fitted over an outer peripheral edge of the inner cover. When the seal ring is not fitted over the inner cover in a natural state, a smooth transition is provided along an extending direction of the seal ring, and a maximum inner diameter of the seal ring is less than a length of the major axis of the inner cover.

Abstract: Disclosed is a split-type electric pressure cooker. The cooker comprises a cooker body and a cooker lid, the cooker body being provided with a power supply device. The split-type electric pressure cooker further comprises: a mechanical vent valve, comprising a valve seat and a valve cover, wherein the valve seat is fixedly mounted on the cooker lid, and the valve cover can be movably mounted on the valve seat; a power transmitting device mounted on the cooker body and able to be electrically connected to the power supply device; a power receiving device mounted on the cooker lid; and a motor driving device mounted on the cooker lid and electrically connected to the power receiving device, the motor driving device being used for driving the valve cover to move so as to open or close the mechanical vent valve. With the cooperation of the power transmitting device and the power receiving device, the power transmission is realized between the cooker body and the cooker lid.

Abstract: A pressure cooking apparatus, a method and device for controlling the same are provided. During a heating process of the apparatus, the device detects a pressure value inside the inner liner, a first temperature value when the detected pressure value rises to a first preset pressure threshold, and a second temperature value when the detected pressure value drops from the preset first pressure threshold to a second preset pressure threshold. Next the device acquires a temperature reference value according to a preset setting strategy using the first temperature value and the second temperature value and then compares a current temperature value detected by the temperature sensor with the temperature reference value. Finally, the device starts or stops the heating process based on the comparison result, thus reducing the on/off frequency of the apparatus and controlling the pressure inside the cooking apparatus more precisely and smoothly.