Control method for embedded dry-burning prevention temperature sensor

A temperature sensor and control method technology, applied in the field of gas stoves, can solve the problems of small spring compression, affecting the appearance of the stove, and small contact pressure, so as to achieve the effect of increasing the lifting amount and improving the detection accuracy

Active Publication Date: 2018-03-30
WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Control method for embedded dry-burning prevention temperature sensor
  • Control method for embedded dry-burning prevention temperature sensor
  • Control method for embedded dry-burning prevention temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0057] Example 1

[0058] Figure 7-9 A preferred embodiment of an embedded anti-dry burning temperature sensor for a gas stove according to the present invention is shown. Among them, the temperature sensor body 6 includes an inner tube 61 and an outer end cover corresponding to the inner tube 61. The outer end cover includes a heat shield 62 and a cover 63 connected to the heat shield 62. The cover 63 is provided with heat For the sensitive element, an elastic element 64, such as a spring, is provided between the outer end cover and the inner tube 61, and a wire (not shown) connected to the heat sensitive element is provided in the inner tube 61.

[0059] In this embodiment, the control system includes a controller 9 (preferably an MCU controller) and a judging device for judging whether the compression amount of the elastic element 64 has reached a preset value. When the judging device judges that the compression amount of the elastic element 64 has reached the preset value, W...

Example Embodiment

[0093] Example 2

[0094] This embodiment is basically the same as Embodiment 1. For brevity of description, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1:

[0095] Such as Figure 15 with Figure 16 As shown, the judging device includes a limit switch 65 arranged on the inner tube 61, and a sensitive block 68 is arranged on the wire 67. When the elastic element 64 reaches a predetermined compression amount, the sensitive block 68 and the limit switch 68 on the wire 67 Correspondingly, the limit switch 68 is triggered. In other words, when the lifting mechanism 7 drives the temperature sensor body 6 to lift, the limit switch 68 lifts and lowers together with the temperature sensor body 6. When the temperature sensor body 6 touches the pot 8 during the rising process, the outer end cover stops rising. The inner tube 61 continues to rise, and the elas...

Example Embodiment

[0106] Example 3

[0107] This embodiment is basically the same as Embodiment 1. For brevity of description, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1:

[0108] Such as Figure 18 As shown, the lifting mechanism 7C includes a fixing bracket 7C-1 for fixing the temperature sensor body 6, a cam 7C-2, and a support bracket 7C-5 for supporting the cam 7C-2, and the fixing bracket 7C-1 includes a fixing bracket body , One side of the fixed bracket body is provided with a lateral sliding groove 7C-8, and the free end of the cam 7C-2 is slidingly connected with the lateral sliding groove 7C-8.

[0109] When in use, the cam 7C-2 is rotated to drive the fixed bracket 7C-1 matched with the cam 7C-2 to move up and down under the rotation of the cam 7C-2, thereby driving the temperature sensor body 6 connected to the fixed bracket 7C-1 to move up and down, Th...

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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...

Claims

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Application Information

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IPC IPC(8): F24C3/12
CPCF24C3/126
Inventor 戴相录许曼曼熊遥季俊生
Owner WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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