4results about How to "Uniform radiation" patented technology

This invention discloses a heater, its control method, and a bathroom appliance. The heater includes a main body and a heating element. The main body has a spaced water flow chamber and a protective chamber. Since the heating element is installed in the protective chamber, it can heat the water flow within the water flow chamber, thus isolating the heating element from the water flow and achieving water-electricity separation, resulting in high safety performance. The heating element includes a mounting part and a heating element disposed on the mounting part, which secures the heating element and ensures that the heat generated by the heating element is evenly radiated into the water flow chamber, resulting in good heating effect and avoiding the problem of localized overheating of the heating element, which could lead to safety hazards.

This invention provides a method for preparing a quartz crucible with low bubble expansion rate, belonging to the field of quartz crucible production technology. The method includes: S1, pouring quartz sand into a mold and using centrifugal molding to form a crucible bubble layer and a transparent layer, wherein the crucible bubble layer uses coarse-grained quartz sand, and the crucible transparent layer uses fine-grained quartz sand; S2, inserting the formed quartz sand along with the mold into a melting chamber and starting a vacuum pump to evacuate to a predetermined pressure; S3, igniting an arc in the mold, and during the formation of the crucible transparent layer, performing a first stage of high-temperature melting on the quartz sand using a first preset power; S4, in the later stage of melting, performing a second stage of high-temperature melting on the quartz sand using a second preset power, and after the second stage of high-temperature melting, removing the mold to obtain a quartz crucible with low bubble expansion rate. This invention, through the combination of quartz sand particle size matching and melting power adjustment, ultimately prepares a quartz crucible with low bubbles and low bubble expansion rate.

The application discloses a pipeline type molten salt anti-condensation liquid level gauge, which comprises a measuring body and a display instrument. The measuring body penetrates through a mounting plate and a heat insulation plate, and the measuring end of the measuring body extends into a metal container, and the connecting end of the measuring body is externally connected with the display instrument. The side wall of the metal container is provided with through holes, and a plurality of ceramic bases are arranged in the metal container, and the plurality of ceramic bases jointly enclose a measuring space. A plurality of groups of heatable resistance wires are arranged on each ceramic base in layers through fixing assemblies, each group of the heatable resistance wires corresponds to an independent heating device and is connected through a connecting wire. The resistance wire heating system integrated around the measuring space and capable of being controlled in layers independently actively heats the measuring area directly and uniformly, effectively prevents the molten salt from condensing around the measuring probe, ensures continuous and accurate liquid level measurement, and has good corrosion resistance and maintenance convenience.

The utility model discloses a microwave continuous reaction device, and belongs to the technical field of 2, 3, 5-trimethylhydroquinone diester synthesis equipment.The microwave continuous reaction device comprises a reactor, a feeding and discharging mechanism and a temperature control mechanism are arranged on the reactor, and the reactor comprises a microwave assembly; the microwave electric field can activate chemical reagent performance, increase molecular activity and improve energy efficiency; compared with a traditional kettle type reactor, the microwave reactor is beneficial to rapidly and uniformly heating organic matters, so that the reaction can be rapidly carried out at a lower temperature, the acidity requirement is reduced, and the equipment investment and energy consumption are greatly reduced; the device can inhibit the generation of by-products while achieving high conversion rate of the reaction, improves the reaction selectivity and the product yield, shortens the reaction time, and is beneficial to large-scale application.