Controller with multi-level protection function for liquid heating container

Abstract

The invention discloses a control device with a multi-level protection function for a liquid heating container. The control device is provided with a multifunctional multi-level protection mechanism with a sectionalized temperature protection function, and a plurality of protection devices with actuating functions are arranged on a single-pole electric circuit. The control device mainly solves the problem of poor service performance of a burning protection actuating temperature-sensitive controller which is a temperature controller, protection tripping points on outer sides of actuators are disconnected at first by the aid of the temperature sensing property of a heating plate, accordingly, a power source is disconnected, and another temperature sensing point continues sensing the temperature and drives the actuators under the condition of interference. The control device has the advantages that the control device is novel in structure, the problem of a single protection structure of a temperature control product is effectively solved, and the protection performance of the temperature controller can be effectively guaranteed.

Description

technical field [0001] The patent of the present invention relates to a controller for a liquid heating container, especially a liquid heating control device with an anti-dry protection function for liquid heating containers such as electric kettles and coffee pots. Background technique [0002] At present, common liquid heating containers on the market, especially electric heating containers such as electric kettles and coffee pots, have the phenomenon of dry burning when there is no liquid in the container, which will not only directly affect the service life of the electric heating container, but also easily cause safety hazards. ACCIDENT. [0003] In response to the above problems, Chinese patent application 95194418.5 discloses an integrated connector and thermal controller assembly installed at the bottom of the container. Since this solution is an integral part, the bottom cover of the container is stressed on the connector, causing the thermal controller to also It ...

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Problems solved by technology

[0002] At present, common liquid heating containers on the market, especially electric heating containers such as electric kettles and coffee pots, have the phenomenon of dry burning when there is no liquid in the container, which will not only directly affect the service life of the electric heating container, but also easily cause safety hazards. ACCIDENT

[0003] In response to the above problems, Chinese patent application 95194418.5 discloses an integrated connector and thermal controller assembly installed at the bottom of the container. Since this solution is an integral part, the bottom cover of the container is stressed on the connector, causing the thermal controller to also It will be deformed by force. This scheme requires that the only pair of ceramic rods must move freely, such as the ceramic rods are stuck or unable to move, and ensure that the clutch lever has no external influence. If foreign matter enters and gets stuck or interferes, due to dry burning protection The actuation temperature sensitive controller only has a single actuation protection function, and this design has the following fatal flaws: 1. The dry burner is connected to the iron shell. When the iron shell is installed on the kettle, it is affected by the tension of the screw. A certain amount of deformation is formed; the gap between the ceramic rod and the double metal increases, resulting in the failure of the dry-burning protection actuation temperature-sensitive controller; 2. The function of this actuator is single, and if there is interference from foreign objects or In the case of damage, the function will fail and affect the performance of the product

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