Control method for embedded dry-burning prevention temperature sensor

Abstract

The invention relates to the technical field of gas stoves, in particular to a control method for an embedded dry-burning prevention temperature sensor. The temperature sensor comprises a temperaturesensor body, a lifting mechanism and a control system, wherein the lifting mechanism is connected with the temperature sensor body and is used for driving the temperature sensor body to lift and fall;and the control system is used for controlling the lifting stroke of the temperature sensor body. The control method comprises the following steps: S1, judging whether the lifting mechanism needs tolift or not; and when the lifting mechanism needs to lift, entering step S2; S2, driving the lifting mechanism to lift so as to drive the temperature sensor body to lift; S3, judging whether the temperature sensor body is in contact with the bottom of a pot or not, and if the temperature sensor body is in contact with the bottom of the pot, stopping lifting of the lifting mechanism; and S4, judging whether the lifting mechanism needs to fall or not, and if the lifting mechanism needs to fall, driving the lifting mechanism to fall so as to drive the temperature sensor body to fall. By the control method, the lifting stroke of the temperature sensor is controlled to ensure that the temperature sensor is in contact with the bottom of the pot closely, and therefore, the detection precision isimproved.

Description

technical field [0001] The invention relates to the technical field of gas stoves, in particular to a control method of an embedded anti-dry burning temperature sensor. Background technique [0002] At present, the cooker with the function of preventing dry burning of the embedded gas cooker is provided with a temperature sensor for detecting the temperature of the bottom of the pot 8 in the center of the burner. When the temperature detected by the temperature sensor reaches the preset value, it is judged as dry burning, and the work of the cooker is stopped, so as to realize the function of preventing dry burning of the cooker. The current anti-dry temperature sensor usually protrudes from the surface of the stove burner when installed. After the pot 8 is placed, the internal spring of the temperature sensor is compressed to make the surface of the temperature sensor and the bottom of the pot 8 form a contact with a certain pressure. The lower end of the gas stove is fixe...

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Problems solved by technology

[0003] However, the above-mentioned installation method of the temperature sensor mainly has four defects: (1) The bottom of part of the pot 8 is concave in the pot 8, so that the compression amount of the spring is too small, and the contact pressure is small, resulting in a large interface thermal resistance, which is not conducive to rapid Heat transfer, resulting in large temperature measurement errors; (2) the spring stroke is limited, when the temperature sensor is installed downward, the pot 8 with a concave bottom of some pots 8 cannot contact the temperature sensor, such as figure 2 As shown; when the temperature sensor is installed on the upper side, the pot 8 protruding from the bottom of some pots 8 is supported by the temperature sensor and cannot be placed stably, as image 3 (3) In order to form a good contact between the bottom of the pot 8 and the temperature sensor, the bottom of the pot 8 must be in parallel contact with the temperature sensor and pressed down vertically during the process of putting the pot, otherwise the temperature sensor and the bottom of the pot 8 will easily Skew contact, resulting in small contact area and large temperature measurement error, such as Figure 4 (4) After long-term use, the exposed temperature sensor is prone to deflection, and the probability of deflection between the temperature sensor and the bottom of the pot 8 increases, and the deflected temperature sensor affects the appearance of the cooker.

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