Temperature measuring assembly and anti-dry-burning electric fire stove

Abstract

The utility model relates to the technical field of electric fire stoves, and discloses a temperature measuring assembly and an anti-dry-burning electric fire stove. The lifting column is vertically and movably arranged in the fixed cylinder, and a temperature measuring element is arranged at the top end; the electromagnet is fixedly mounted on the inner bottom wall of the fixed cylinder; and the spring is connected between the bottom of the lifting column and the electromagnet. According to the temperature measuring assembly, the temperature measuring element is arranged at the top end of the lifting column capable of moving up and down, and a matching structure of the electromagnet and the spring is combined, so that automatic lifting control of the temperature measuring element is realized, and the temperature measuring element can be lifted to be attached to the bottom of a pot when temperature measurement is needed and can be automatically descended when not used; therefore, empty measurement is avoided, and temperature measurement accuracy and probe safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of electric stove technology, specifically to a temperature measuring component and an anti-dry-burning electric stove. Background Technology

[0002] With the development of intelligent modern kitchen equipment, electric stoves have been widely used in home and commercial kitchens. In actual use, due to forgetfulness or other reasons, the pot often continues to heat even after the water has evaporated, resulting in "dry burning." This can easily lead to damage to the cookware, smoke, or even fire, posing a significant safety hazard. Therefore, it is essential to avoid dry burning of electric stoves.

[0003] In existing technologies, the presence of "dry burning" is typically determined by placing a thermistor or thermocouple under the pot to detect the temperature of the bottom. However, in practical applications, we have found that commonly used temperature sensing components still have certain shortcomings, such as:

[0004] There is usually a certain gap between the temperature sensing component and the cookware, which results in a slow temperature response and is easily affected by factors such as ambient temperature, making it impossible to accurately measure the actual temperature of the bottom of the pot. If the temperature sensing component is set higher, it can make close contact with the cookware, but this will limit the cookware, and round-bottomed cookware is usually not suitable.

[0005] Based on this, we propose a temperature measuring component and an anti-dry-burning electric stove. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a temperature measuring component and an anti-dry-burning electric stove, which has the advantages of being highly floatable and able to precisely fit the bottom of the pot.

[0007] To achieve the aforementioned goal of high floatability and precise fit to the bottom of the pot, this utility model provides the following technical solution: a temperature measuring component, comprising:

[0008] A fixed cylinder provides the housing for the device;

[0009] The lifting column is installed vertically inside a fixed cylinder and has a temperature measuring element at the top.

[0010] The electromagnet is fixedly installed on the inner bottom wall of the fixed cylinder;

[0011] A spring is connected between the bottom of the lifting column and the electromagnet.

[0012] As a preferred embodiment of this invention, the temperature sensing element is a thermocouple or a thermistor.

[0013] As a preferred technical solution of this utility model, it also includes a wire that passes through the bottom end of the fixed cylinder and is electrically connected to the temperature measuring element and the electromagnet.

[0014] As a preferred technical solution of this utility model, the lifting column has an inner cavity, and a piston is arranged to move up and down in the inner cavity;

[0015] The piston is filled with a thermally expanding liquid.

[0016] A pressure sensor is fixedly installed on the inner bottom wall of the cavity.

[0017] In a preferred embodiment of this invention, the thermally expanding liquid is silicone oil.

[0018] As a preferred embodiment of this invention, a pressure plate for applying pressure to the pressure sensor is also fixedly installed at the bottom of the piston.

[0019] As a preferred embodiment of this utility model, the lifting column is guided and connected to the fixed cylinder via a guide rail.

[0020] Compared with the prior art, the present invention provides a temperature measuring component with the following advantages:

[0021] 1. This temperature measuring component, by placing the temperature measuring element at the top of a vertically movable lifting column and combining it with an electromagnet and spring, achieves automatic lifting control of the temperature measuring element. When temperature measurement is needed, it can rise to fit the bottom of the pot, and when not in use, it can automatically descend, thereby avoiding empty measurement, improving temperature measurement accuracy and probe safety.

[0022] 2. This temperature measuring component, by setting up a silicone oil and piston structure inside the lifting column, when the temperature of the bottom of the pot rises abnormally, the silicone oil drives the piston to move and applies pressure to the pressure sensor, thereby providing a dry burning judgment path independent of the electronic temperature measuring element, which significantly improves the redundancy and safety of the system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is an enlarged schematic diagram of the fixed cylinder part of this utility model;

[0025] Figure 3 This is a cross-sectional view of the fixed cylinder portion of this utility model;

[0026] Figure 4 This is a cross-sectional view of the fixed cylinder part of this utility model.

[0027] In the diagram: 1. Stove head; 2. Plasma needle; 3. Fixed cylinder; 4. Lifting column; 5. Temperature measuring element; 6. Spring; 7. Electromagnet; 8. Wire; 9. Inner cavity; 10. Piston; 11. Pressure plate; 12. Pressure sensor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0029] Please see Figures 1-3 This embodiment provides a temperature measuring component, the main body of which is a fixed cylinder 3, such as... Figure 2 As shown, a lifting column 4 is installed vertically inside the fixed cylinder 3. A temperature measuring element 5 is provided at the top of the lifting column 4. In this embodiment, the temperature measuring element 5 is a thermocouple or a thermistor. The specific temperature measuring principle can be directly referred to the prior art, and will not be described in detail in this embodiment.

[0030] In this utility model, an electromagnet 7 is fixedly installed on the inner bottom wall of the fixed cylinder 3, and a spring 6 is fixedly installed between the bottom of the lifting column 4 and the electromagnet 7.

[0031] When the electromagnet 7 is energized, the magnetic force can cause the lifting column 4 to retract, at which time the spring 6 is compressed; when the electromagnet 7 is de-energized, the lifting column 4 extends under the elastic force of the spring 6, thus pressing against the bottom of the pot.

[0032] In this embodiment, the lifting column 4 is guided and connected to the fixed cylinder 3 through a guide slide rail, making the up and down movement of the lifting column 4 smoother and more stable.

[0033] Therefore, in this embodiment, by setting the temperature measuring element 5 at the top of the vertically movable lifting column 4 and combining it with the cooperation structure of the electromagnet 7 and the spring 6, the automatic lifting control of the temperature measuring element 5 is realized. When temperature measurement is needed, it can be raised to fit the bottom of the pot, and when not in use, it can be automatically lowered, thereby avoiding empty measurement, improving the accuracy of temperature measurement and the safety of the probe.

[0034] like Figure 2 As shown, it also includes a wire 8, which passes through the bottom end of the fixed cylinder 3 and is electrically connected to the temperature measuring element 5 and the electromagnet 7 to realize the connection of the circuit.

[0035] Furthermore, the electromagnet 7 is connected to the control system of the electric stove, and is used to cut off the power after detecting that the pot is placed in place, so as to drive the lifting column 4 to move upward; and to turn on the power when the pot is removed, so as to lower the lifting column 4. Example

[0036] Please see Figure 3 and Figure 4 Based on Embodiment 1, in this embodiment, an inner cavity 9 is formed inside the lifting column 4. A piston 10 is vertically movable within the inner cavity 9. The piston 10 is filled with a thermally expanding liquid, such as silicone oil. A pressure sensor 12 is fixedly installed on the inner bottom wall of the inner cavity 9. Figure 4 A pressure plate 11 for applying pressure to the pressure sensor 12 is also fixedly installed at the bottom of the piston 10;

[0037] When dry burning occurs and the temperature at the bottom of the pot rises abnormally, the expansion of the silicone oil drives the piston 10 to move and applies pressure to the pressure sensor 12, thereby providing a dry burning judgment path independent of the electronic temperature measuring element, which significantly improves the redundancy and safety of the system.

[0038] When the pressure sensor 12 detects that the pressure exceeds the preset pressure threshold, it can send a dry-burning warning or a power-off command to the control system.

[0039] Therefore, in this application, the control system can jointly determine the state of the pot bottom based on the temperature signal output by the temperature sensing element 5 and the pressure signal output by the pressure sensor 12. As for the specific circuit structure, those skilled in the art can build it as needed, and it will not be described in detail in this embodiment. Example

[0040] Based on Embodiment 1 and Embodiment 2, this embodiment proposes an anti-dry-burning electric stove, including a stove head 1 and plasma needles 2 evenly installed on the stove head 1, and the stove head 1 is equipped with a temperature measuring component as described in Embodiment 1 or Embodiment 2.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature measuring component, characterized in that, include: Fixed cylinder (3) provides the housing of the device; The lifting column (4) is installed in the fixed cylinder (3) and the top is equipped with a temperature measuring element (5). An electromagnet (7) is fixedly installed on the inner bottom wall of a fixed cylinder (3); A spring (6) is connected between the bottom of the lifting column (4) and the electromagnet (7).

2. The temperature measuring component according to claim 1, characterized in that: The temperature measuring element (5) is a thermocouple or a thermistor.

3. The temperature measuring component according to claim 1 or 2, characterized in that: It also includes a wire (8) that passes through the bottom end of the fixed cylinder (3) and is electrically connected to the temperature measuring element (5) and the electromagnet (7).

4. The temperature measuring component according to claim 1, characterized in that: The lifting column (4) has an inner cavity (9) inside, and a piston (10) is installed in the inner cavity (9) to move up and down. The piston (10) is filled with a thermally expanding liquid. A pressure sensor (12) is fixedly installed on the inner bottom wall of the inner cavity (9).

5. The temperature measuring component according to claim 4, characterized in that: The thermally expanding liquid is silicone oil.

6. The temperature measuring component according to claim 4, characterized in that: The bottom of the piston (10) is also fixedly fitted with a pressure plate (11) for applying pressure to the pressure sensor (12).

7. The temperature measuring component according to claim 1, characterized in that: The lifting column (4) is guided and connected to the fixed cylinder (3) via a guide rail.

8. An anti-dry-burning electric stove, comprising a burner head (1) and plasma needles (2) uniformly installed on the burner head (1), characterized in that: The stove head (1) is equipped with a temperature measuring component as described in any one of claims 1-7.

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