A non-stuck magnetic steel temperature limiter

Abstract

The invention relates to a hysteresis-free magnetic steel temperature limiter, comprising: a small cup; Magnet; hard magnetic support; the hard magnetic support is installed on the inner wall of the small cup away from the side of the soft magnetic support, and the inner ring of the hard magnetic support is provided with a hard magnet; the inner spring is fixedly connected to the between the soft magnetic holder and the hard magnetic holder. The inner spring adopts a conical spring, the inner spring will not be inclined to one side, and the inner spring compression and springing force are parallel, the suction and release are smooth, and the soft and hard magnets have good suction surfaces, so that the temperature transfer effect is the best. Maintain accurate temperature sensing; it can effectively avoid the hidden dangers of interference, jamming, and edge rubbing caused by hard magnetic support components caused by the tilt of the inner spring, resulting in early skipping of cooking, stagnation and late jumping, and dry cooking.

Description

technical field [0001] The invention relates to the technical field of temperature control elements, and more specifically, the invention relates to a non-snap magnetic steel temperature limiter. Background technique [0002] The magnetic steel temperature limiter is the core component of the mechanical rice cooker. It is used to control the cooking temperature. The heating plate is heated through the internal soft magnet and the magnetic hard magnet, and the heat is transferred to the magnetic steel temperature limiter through the heating plate. , the magnetic steel temperature limiter is affected by heat transfer, and the magnetism of the internal soft magnet changes according to the change of temperature. When the temperature rises to the point where the magnetism disappears, the soft magnet and the hard magnet separate and perform a tripping action, realizing the rice cooker from the cooking mode Automatically switch to heat preservation mode to complete the effect of au...

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Problems solved by technology

[0003] The inner spring of the existing magnetic steel temperature limiter is a straight spring, and the diameter of the inner spring is too much smaller than the diameter of the soft magnetic holder, which leads to poor matching between the inner spring and the soft magnetic holder. The height distance is different, one side is higher and the other is lower, and the strength is not parallel. The compression state of the inner spring is prone to overlap, and the strength of the inner spring is different, resulting in the failure to bounce or not smooth, high temperature causing late jumping or low temperature causing early jumping temperature Instability; when tripping, the force of the inner spring is not parallel, and the hard magnetic support and contact rod are tilted, resulting in interference, stagnation, and up and down movement, which will cause burnt rice in late jumping or burn out the rice cooker if it does not trip. question

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