Heating base

Abstract

The utility model relates to the technical field of household appliances, in particular to a heating base. Comprising a bottom shell, an inner shell and a control assembly, the inner shell is fixedly arranged in an upper port of the bottom shell, a heating disc is arranged on the inner shell, and a temperature sensing hole is formed in the heating disc; a linkage terminal capable of moving up and down is arranged on the inner shell, and a temperature sensing probe is arranged at the upper end of the linkage terminal; a spring is arranged between the linkage terminal and the inner shell; the spring supports the linkage terminal to enable the temperature sensing probe to extend out of the temperature sensing hole; the control assembly is arranged in the bottom shell, the linkage terminal can trigger the control assembly when moving downwards, and the control assembly is electrically connected with the heating disc and the temperature sensing probe. According to the utility model, the structure is reasonable, the temperature sensing probe at the upper end of the linkage terminal is exposed, the spring can drive the linkage terminal to enable the temperature sensing probe to be in contact with a vessel, the temperature sensing sensitivity and precision are ensured, the linkage terminal is pressed down to trigger the control assembly to supply power to the heating disc, and the action of the linkage terminal is simplified to ensure the stability of trigger control.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a heating base. Background Art

[0002] Electric heaters typically convert electrical energy into heat, heating food or water through a heat-conducting container. They are commonly used in household kitchen appliances such as rice cookers and electric kettles. The use of various electric heaters can avoid the risks of cooking with open flames, and the use of logic elements such as temperature control and power-off functions can automatically heat and shut down the heaters, greatly facilitating people's lives.

[0003] Current electric heaters are typically equipped with anti-dry-burn components to prevent dry-burning caused by the power supply being mistakenly triggered when no heating vessel is placed. For example, Chinese patent CN219846088U discloses a heating base comprising: a housing, a top shell embedded in the top of the housing, the top shell including a mounting portion, a heating portion provided thereon, a push rod slidably mounted on the mounting portion, the bottom end of the push rod being a wedge-shaped block; and a control switch comprising a power switch and a sliding contact, the power switch being provided with an elastic contact, the sliding contact slidably mounted on the bottom of the top shell, one end of the sliding contact abutting the wedge-shaped block, and the heating portion being in electrical sliding contact with the sliding contact.

[0004] When the above-mentioned prior art is in use, the heating vessel is placed on the heating part, and the push rod is squeezed to cause the wedge-shaped block at its lower end to slide down. The wedge block squeezes and pushes the sliding contact through its wedge surface, causing the sliding contact to slide laterally to achieve electrical contact with the elastic contact, thereby supplying power to the heating part to prevent dry burning. However, this extrusion transmission coordination method of the wedge block and the sliding contact has jerky and stuck phenomena during use, and poor contact occurs after a certain period of use. In particular, the heating device controls the heating process through a thermostat, and the probe of the thermostat needs to be in contact to detect the temperature of the heating vessel. The existing temperature control probe is usually encapsulated in a thermally conductive sheath. The temperature sensing accuracy is affected by the material of the thermally conductive sheath, and there is a large error range. The sensitivity of the temperature control probe is also affected.

[0005] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0006] The purpose of the utility model is to provide a heating base with reasonable structure, stable control and sensitive temperature sensing in view of the defects and shortcomings of the existing technology.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model describes a heating base, comprising a bottom shell, an inner shell and a control component, wherein the inner shell is fixedly arranged in the upper port of the bottom shell, a heating disk is provided on the inner shell, and a temperature sensing hole is provided on the heating disk; a linkage terminal that can move up and down is provided on the inner shell, and a temperature sensing probe is provided on the upper end of the linkage terminal; a spring is provided between the linkage terminal and the inner shell, and the spring supports the linkage terminal so that the temperature sensing probe extends out of the temperature sensing hole; the control component is arranged in the bottom shell, and the linkage terminal can trigger the control component when it moves downward, and the control component is electrically connected to the heating disk and the temperature sensing probe respectively.

[0009] According to the above scheme, the upper end of the linkage terminal is provided with a step and probe silicone, the probe silicone is provided with an anchor hole, and the step is provided with a through hole; the temperature sensing probe is inserted into the anchor hole and the through hole, and the temperature sensing probe rivets the probe silicone to the step.

[0010] According to the above scheme, a hollow cylinder seat is provided on the inner shell, a step is provided inside the cylinder seat, and a guide hole is provided on the step; the linkage terminal can be movably inserted into the guide hole up and down, and a spring is provided between the cylinder seat and the linkage terminal, the lower end of the spring abuts against the step, and the upper end of the spring abuts against the ladder.

[0011] According to the above scheme, the cylinder seat is concentrically arranged with the temperature sensing hole, waterproof silicone is provided in the temperature sensing hole, and a waterproof hole is provided on the waterproof silicone; the upper end of the cylinder seat contacts the waterproof silicone, and the spring supports the linkage terminal to make the ladder contact the waterproof silicone, thereby making the temperature sensing probe extend out of the waterproof hole.

[0012] According to the above solution, a plurality of water return holes are provided on the inner shell, and a water-permeable structure is provided on the bottom surface of the bottom shell.

[0013] According to the above scheme, the control component includes a circuit board and a micro switch, the trigger key of the micro switch is paired with the lower end of the linkage terminal, and the circuit board is electrically connected to the micro switch, heating plate and temperature sensor respectively.

[0014] According to the above solution, the circuit board is fixed on the side wall of the bottom shell, and a control switch is provided on the circuit board; the micro switch is provided below the cylinder seat, and the micro switch is fixedly connected to the inner shell so that its trigger key is paired with the lower end of the linkage terminal.

[0015] According to the above solution, a stopper is provided at the lower end of the cartridge seat, and the stopper is matched with the lower end of the linkage terminal.

[0016] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure, the temperature sensing probe at the upper end of the linkage terminal is exposed, the spring can drive the linkage terminal to make the temperature sensing probe contact the vessel, thereby ensuring the temperature sensing sensitivity and accuracy, and the linkage terminal can be pressed down to trigger the control component to supply power to the heating plate, simplifying the action of the linkage terminal can ensure the stability of the trigger control, and the overall structure is compact and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model.

[0020] In the picture:

[0021] 1. Bottom shell; 2. Inner shell; 3. Heating plate; 4. Linkage terminal; 11. Water-permeable structure; 12. Circuit board; 13. Micro switch; 14. Control switch; 21. Cylinder seat; 22. Step; 23. Guide hole; 24. Return hole; 25. Stopper; 31. Temperature sensing hole; 32. Waterproof silicone; 33. Waterproof hole; 41. Temperature sensor; 42. Spring; 43. Step; 44. Probe silicone; 45. Anchor hole; 46. Through hole. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1-3 As shown, the heating base described in the present invention includes a bottom shell 1, an inner shell 2 and a control component. The inner shell 2 is fixedly arranged in the upper end of the bottom shell 1, and a heating disk 3 is provided on the inner shell 2, and a temperature sensing hole 31 is provided on the heating disk 3. The inner shell 2 is provided with a linkage terminal 4 that can move up and down, and a temperature sensing probe 41 is provided at the upper end of the linkage terminal 4. A spring 42 is provided between the linkage terminal 4 and the inner shell 2, and the spring 42 supports the linkage terminal 4 so that the temperature sensing probe 41 extends out of the temperature sensing hole 31. The control component is arranged in the bottom shell 1, and when the linkage terminal 4 moves downward, the control component can be triggered, and the control component is electrically connected to the heating disk 3 and the temperature sensing probe 41 respectively. The inner shell 2 is embedded in the upper end of the bottom shell 1, and the inner shell 2 is recessed inward to form an open bowl-shaped cavity. The heating disk 3 is fixedly arranged in the bowl cavity of the inner shell 2. When a vessel is placed on the heating disk 3, the bowl cavity of the inner shell 2 forms a central position for the vessel. Naturally, the container will also press against the temperature probe 41, causing the linkage terminal 4 to move downward, which in turn triggers the control component at the lower end of the linkage terminal, which in turn activates the power supply circuit and activates the heating plate 3. The spring 42 can drive the linkage terminal 4 upward, ensuring close contact between the temperature probe 41 and the container. Preferably, the temperature probe 41 is exposed at the upper end of the linkage terminal 4, allowing direct contact with the container, thereby improving the temperature sensitivity and accuracy of the temperature probe 41.

[0024] The upper end of the linkage terminal 4 is provided with a step 43 and a probe silicone 44. The probe silicone 44 is provided with an anchor hole 45, and the step 43 is provided with a through hole 46. The temperature probe 41 is inserted into the anchor hole 45 and through hole 46, and the temperature probe 41 rivets the probe silicone 44 to the step 43. The step 43 is used to mount the temperature probe 41 and the probe silicone 44. The step 43 is integrally formed with the linkage terminal 4, and the temperature probe 41 rivets the probe silicone 44 to the step 43 via locking springs at both ends. The probe silicone 44 covers the outer surfaces of the temperature probe 41 and the step 43, ensuring a seal between the temperature probe 41 and the through hole 46. The temperature probe 41 is inserted through the anchor hole 45, with its upper end exposed, allowing direct contact with the container, thereby enhancing sensitivity.

[0025] The inner shell 2 is provided with a hollow cartridge seat 21, which is provided with a step 22 within the cartridge seat 21, and a guide hole 23 on the step 22. The linkage terminal 4 is movably positioned vertically through the guide hole 23. A spring 42 is positioned between the cartridge seat 21 and the linkage terminal 4, with the lower end of the spring 42 contacting the step 22, and the upper end of the spring 42 contacting the step 43. The step 22 is an internal structure of the cartridge seat 21, and the step 22 controls the movement stability of the linkage terminal 4 through the guide hole 23. Furthermore, the lower end of the spring 42 can contact the step 22, and the step 43 extends outward to form a skirt for the spring 42 to contact, thereby driving the linkage terminal 4 upward, causing the temperature probe 41 to extend out of the temperature sensing hole 31 or contact the container.

[0026] The cartridge seat 21 is concentrically arranged with the temperature sensing hole 31, and the through hole 46 and the guide hole 23 are concentrically arranged. A waterproof silicone 32 is provided in the temperature sensing hole 31, and a waterproof hole 33 is provided on the waterproof silicone 32. The upper end of the cartridge seat 21 contacts the waterproof silicone 32, and the spring 42 supports the linkage terminal 4 so that the ladder 43 contacts the waterproof silicone 32, thereby causing the temperature sensing probe 41 to extend out of the waterproof hole 33.

[0027] The step 43, probe silicone 44 and temperature probe 41 constitute the head structure of the upper end of the linkage terminal 4, and the head structure is spaced apart from the temperature sensing hole 31. The probe silicone 44 can block the heat radiation of the heating plate 3 to avoid affecting the measurement accuracy of the temperature sensing probe 41. The waterproof silicone 32 is set in the temperature sensing hole 31, and the head structure can pass through the waterproof hole 33. The cylinder seat 21 contacts the waterproof silicone 32 and can cooperate with the heating plate 3 to clamp and fix the waterproof silicone 32. Furthermore, when no container is placed on the heating plate 3, the spring 42 drives the linkage terminal 4 upward, and the probe silicone 44 contacts the waterproof silicone 32 to prevent water from entering the cylinder seat 21, thereby ensuring the electrical safety of the control components inside the heating base.

[0028] The inner shell 2 is provided with a plurality of water return holes 24, and the bottom surface of the bottom shell 1 is provided with a water-permeable structure 11. The cartridge seat 21 is located at the center of the inner shell 2, and the plurality of water return holes 24 surround and are spaced apart from the cartridge seat 21. The outer edge of the heating plate 3 is spaced apart from the inner shell 2. A small amount of water that slides down the upper edge of the heating plate 3 can be discharged through the water return holes 24 and the water-permeable structure 11 without affecting the electrical safety of the control assembly. It is understood that the water-permeable structure 11 is a structure such as a hole, groove, etc. formed on the bottom surface of the bottom shell 1.

[0029] The control assembly includes a circuit board 12 and a microswitch 13. The trigger button of the microswitch 13 is paired with the lower end of the linkage terminal 4. The circuit board 12 is electrically connected to the microswitch 13, the heating plate 3, and the temperature probe 41. The circuit board 12 is connected to a power source. When a container is placed on the heating plate 3, the temperature probe 41 and the linkage terminal 4 are pressed downward. The lower end of the linkage terminal 4 triggers the microswitch 13, and the circuit board 12 is connected to the power source to activate the heating plate 3.

[0030] The circuit board 12 is fixed to the side wall of the bottom housing 1 and is provided with a control switch 14. The micro switch 13 is located below the cylinder seat 21. The micro switch 13 is fixedly connected to the inner housing 2 so that its trigger key is paired with the lower end of the linkage terminal 4. The circuit board 12 is powered only when the micro switch 13 is triggered. At this time, the operation of the electric heating plate 3 can be controlled by the control switch 14.

[0031] The lower end of the cylinder seat 21 is provided with a stopper 25, which is matched with the lower end of the linkage terminal 4. The stopper 25 is used to control the downward movement of the linkage terminal 4 to prevent the linkage terminal 4 from excessively squeezing the micro switch 13 and damaging the trigger key.

[0032] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A heating base, comprising a bottom shell (1), an inner shell (2) and a control assembly, wherein the inner shell (2) is fixedly arranged in an upper port of the bottom shell (1), a heating disk (3) is provided on the inner shell (2), and a temperature sensing hole (31) is provided on the heating disk (3); characterized in that: The inner shell (2) is provided with a linkage terminal (4) that can move up and down, and a temperature sensing probe (41) is provided at the upper end of the linkage terminal (4); a spring (42) is provided between the linkage terminal (4) and the inner shell (2), and the spring (42) supports the linkage terminal (4) so ​​that the temperature sensing probe (41) extends out of the temperature sensing hole (31); the control component is provided in the bottom shell (1), and the linkage terminal (4) can trigger the control component when it moves downward, and the control component is electrically connected to the heating plate (3) and the temperature sensing probe (41) respectively.

2. The heating base according to claim 1, characterized in that: The upper end of the linkage terminal (4) is provided with a step (43) and a probe silicone (44); the probe silicone (44) is provided with an anchor hole (45), and the step (43) is provided with a through hole (46); the temperature sensing probe (41) is inserted into the anchor hole (45) and the through hole (46), and the temperature sensing probe (41) rivets the probe silicone (44) to the step (43).

3. The heating base according to claim 1, characterized in that: The inner shell (2) is provided with a hollow cylinder seat (21), a step (22) is provided in the cylinder seat (21), and a guide hole (23) is provided on the step (22); the linkage terminal (4) is movably arranged in the guide hole (23) up and down, and a spring (42) is arranged between the cylinder seat (21) and the linkage terminal (4), the lower end of the spring (42) contacts the step (22), and the upper end of the spring (42) contacts the ladder (43).

4. The heating base according to claim 3, characterized in that: The cartridge seat (21) is concentrically arranged with the temperature sensing hole (31), a waterproof silica gel (32) is arranged in the temperature sensing hole (31), and a waterproof hole (33) is arranged on the waterproof silica gel (32); the upper end of the cartridge seat (21) contacts the waterproof silica gel (32), and the spring (42) supports the linkage terminal (4) so ​​that the ladder (43) contacts the waterproof silica gel (32), thereby allowing the temperature sensing probe (41) to extend out of the waterproof hole (33) and be arranged.

5. The heating base according to claim 3, characterized in that: The inner shell (2) is provided with a plurality of water return holes (24), and the bottom surface of the bottom shell (1) is provided with a water permeable structure (11).

6. The heating base according to claim 1, characterized in that: The control assembly comprises a circuit board (12) and a micro switch (13); a trigger key of the micro switch (13) is paired with the lower end of the linkage terminal (4); and the circuit board (12) is electrically connected to the micro switch (13), the heating plate (3) and the temperature sensing probe (41).

7. The heating base according to claim 6, characterized in that: The circuit board (12) is fixed on the side wall of the bottom shell (1), and a control switch (14) is provided on the circuit board (12); the micro switch (13) is provided below the cylinder seat (21), and the micro switch (13) is fixedly connected to the inner shell (2) so that its trigger key is matched with the lower end of the linkage terminal (4).

8. The heating base according to claim 7, characterized in that: A stopper (25) is provided at the lower end of the cylinder seat (21), and the stopper (25) is matched with the lower end of the linkage terminal (4).

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