2results about How to "Avoid Dry Burn Situations" patented technology

The utility model discloses a kind of electric hot water boiler water shortage protection devices, it is related to electric hot water boiler protection technical field.This kind of electric hot water boiler water shortage protection device, including water heater, the inside of water heater is provided with storage cavity, the inside of storage cavity is movably sleeved with lifting piece, the top of lifting piece is movably sleeved with short-circuit blocking piece and liquid valve switch piece;The lifting piece includes floating plate, rod A, rod B, connecting plug, the inside of storage cavity is movably sleeved floating plate.This kind of electric hot water boiler water shortage protection device, when the liquid of floating plate bottom is exhausted and is moved down by gravity, drives rod A, rod B and connecting plug synchronous motion, makes the internal circuit of insulation box disconnect and form open circuit, can automatically cut off power when liquid is insufficient, effectively avoid equipment dry burning condition to occur, not only guarantee equipment operation safety, prevent element damage due to dry burning, also significantly prolong the service life of equipment, reduce use risk and maintenance cost.

This application relates to a sensing device and a water heater. The sensing device includes: a rod body erected inside the cavity of an appliance, the bottom of the rod body being connected to the appliance, and liquid being present inside the cavity to form a liquid surface; a buoyancy member slidably connected to the rod body, capable of moving along the rod body following the liquid surface; and a sensing element disposed at the top of the rod body, the sensing element being able to sense the buoyancy member when it rises to a preset height, and outputting a feedback signal. In this application, the buoyancy member rises and falls synchronously with the liquid surface based on density difference, and its position change directly reflects the liquid level. By sensing the position of the buoyancy member, the start and stop of the appliance can be controlled according to the liquid level inside the appliance, effectively preventing dry burning, extending the life of the heating element, and reducing maintenance and energy costs.