Abstract: The present invention relates to an electric heater apparatus including a switch control part for controlling a switching part according to a control command of an air-conditioner controlling part; the switching part switched according to a switching control signal of the switch control part for supplying electric power of the power supply part from a heating part; and the heating part for receiving the electric power of the switching part and generating heat, wherein the switching part includes a plurality of switching modules set to control an output load of the heating part, and the switch control part operates one or more switching modules in serial order according to a target heating temperature.

Abstract: Disclosed are a microgrid gateway and a control method thereof. That is, according to the embodiment of the present invention, after various data is temporarily stored in the specific system module, when the input is completed, the abnormality of the corresponding specific system module is determined by the reset module in the process of storing the various data temporarily stored in the database, thereby reducing a database access load and securing gateway hardware performance hard to an operating environment.

Abstract: The present invention relates to an electric heater apparatus including a switch control part for controlling a switching part according to a control command of an air-conditioner controlling part; the switching part switched according to a switching control signal of the switch control part for supplying electric power of the power supply part from a heating part; and the heating part for receiving the electric power of the switching part and generating heat, wherein the switching part includes a plurality of switching modules set to control an output load of the heating part, and the switch control part operates one or more switching modules in serial order according to a target heating temperature.

Abstract: A pipe connection joint comprising a linear slant portion formed on a pipe joining hole of a flange and a pipe-expanded portion expandably formed on a pipe. The pipe-expanded portion is joined to the pipe joining hole, along the linear slant portion. A pipe connection joint with an inwardly-curved surface portion of the pipe bent by micro R bending technology is also disclosed.

Abstract: A contents processing device connectable to a network includes a network interface unit configured to request, via the network, contents information from each of a plurality of contents providers, and to receive, via the network, contents information from each of the plurality of contents providers; a user interface unit configured to receive a user input; and a control unit configured to control, based on the user input, displaying of multiple contents windows, and the received contents information corresponding respectively to the plurality of content providers respectively in the multiple contents windows.

Abstract: The present invention relates to a pipe connection joint that includes a linear slant portion formed on a pipe joining hole of a flange and a pipe-expanded portion expandably formed on a pipe, which is joined to the pipe joining hole, along the linear slant portion, whereby it provides a sufficient joining strength due to an increase of a contact area between the flange and the pipe, secures a firm fixation, prevents rotation of the pipe and guarantees communalization. In addition, the pipe connection joint is provided with an inwardly-curved surface portion of the pipe bent by micro R bending technology to minimize a bending distance, whereby it allows an easy product design in a restricted space. The pipe connection joint is further provided with a sealing member seating portion formed by the pipe-expanded portion of the pipe without needing additional process for seating of a sealing member to thereby minimize machining and reduce manufacturing expenses.