Electric food warmer base

Abstract

The utility model relates to the technical field of electric food warmers, in particular to an electric food warmer base. Comprising a disc-shaped seat body, an electric heating device installed in the disc-shaped seat body, a temperature control switch and a temperature sensor electrically connected with the temperature control switch, and the temperature control switch is installed on the outer wall of the disc-shaped seat body; the temperature sensing assembly comprises a mounting seat fixedly mounted in the disc-shaped seat body and a mounting frame mounted on the mounting seat, a metal temperature sensing block is fixedly mounted at one end, close to the middle of the disc-shaped seat body, of the mounting frame, the temperature sensor is mounted on the metal temperature sensing block, and the detection end of the temperature sensor is in close contact with the metal temperature sensing block. The electric food warmer is more reasonable in structural layout, direct contact between the temperature sensor and the electric heating device is avoided while the surrounding temperature of the electric heating device is accurately measured, the burn-out rate of the temperature sensor is reduced, electrochemical reaction between the temperature sensor and the electric heating device is avoided, and the service life of the electric food warmer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating pots, in particular to an electric heating pot base. Background Art

[0002] As we all know, electric hot pots have high thermal efficiency, long service life, and complete functions. They are modern cooking utensils that can perform various processing such as frying, deep-frying, steaming, and boiling. They can not only cook food, but also keep it warm. They are clean and hygienic to use, have no radiation, save time and effort, and are one of the indispensable tools for modern housework.

[0003] Chinese utility model patent publication number CN211093402U discloses an electric hot pot, in which a temperature sensor is arranged on the top of an electric heating device and can just contact the bottom of the pot body when the pot body is placed on the electric heating device; it can cut off the power supply after the porridge is cooked, saving energy and ensuring the taste of the porridge.

[0004] However, the temperature sensor is in direct contact with the electric heating device, and the high temperature at the electric heating device can easily cause the temperature sensor to burn out. At the same time, the detection end of the temperature sensor and the electric heating device are often made of different metal materials (for example, copper and aluminum respectively). When the electric heating device and the temperature sensor are powered on, an electrochemical reaction is likely to occur, accelerating local corrosion at the contact point of the electric heating device or the temperature sensor, thereby affecting the overall service life of the electric hot pot. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides an electric hot pot base with a more reasonable structural layout. While accurately measuring the temperature around the electric heating device, it avoids direct contact between the temperature sensor and the electric heating device, reduces the burning rate of the temperature sensor, avoids electrochemical reaction between the temperature sensor and the electric heating device, and extends the service life of the electric hot pot.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an electric hot pot base, comprising a disc-shaped base body, an electric heating device installed in the disc-shaped base body, a temperature control switch and a temperature sensor electrically connected to the temperature control switch, wherein the temperature control switch is installed on the outer wall of the disc-shaped base body; and further comprising a temperature sensing component, wherein the temperature sensing component comprises a mounting base fixedly installed in the disc-shaped base body and a mounting bracket installed on the mounting base, a metal temperature sensing block being fixedly installed at one end of the mounting bracket adjacent to the middle of the disc-shaped base body, the temperature sensor being installed on the metal temperature sensing block, the detection end of the temperature sensor being in close contact with the metal temperature sensing block, the metal temperature sensing block being located below the middle of the electric heating device, and the mounting bracket being arranged along the radial direction of the disc-shaped base body.

[0007] Preferably, the mounting frame is a metal frame; further, the mounting frame can be a thin-walled metal frame with good thermal conductivity, such as a thin-walled aluminum frame or a thin-walled copper frame.

[0008] Preferably, the mounting seat is located in the disc-shaped seat body away from the center of the disc-shaped seat body, the mounting frame is hingedly mounted on the mounting seat, a through hole is provided on the mounting frame on the side away from the center of the disc-shaped seat body, an adjustment screw passing through the through hole is screwed on the disc-shaped seat body, and the adjustment screw is provided with a retaining ring located at the upper and lower parts of the through hole respectively; further, the outer diameter of the retaining ring is larger than the inner diameter of the through hole.

[0009] Preferably, an elastic connector is installed on the mounting seat, and the mounting frame is elastically connected to the mounting frame through the elastic connector; further, the elastic connector can be a tension spring, one end of the tension spring is fixedly connected to the mounting seat, and the other end of the spring is fixedly connected to the mounting frame away from the mounting seat.

[0010] Preferably, the elastic connecting member is an arc-shaped metal spring, which is fixedly mounted on the mounting seat. The mounting frame is provided with a through opening for allowing the arc-shaped metal spring to pass through, and the arc-shaped metal spring passes through the through opening.

[0011] Preferably, a limiting rod is fixedly mounted on the mounting seat, and the limiting rod is located above the arc-shaped metal spring.

[0012] Preferably, the mounting frame is provided with a bendable metal claw, and the metal temperature sensing block is fixedly connected to the mounting frame via the metal claw.

[0013] Compared with the prior art, the present invention provides an electric hot pot base with the following beneficial effects:

[0014] In the base of the electric hot pot, the temperature sensor and the electric heating device are arranged separately. The temperature of the metal temperature sensing block increases after absorbing the heat generated by the electric heating device. The temperature at the metal temperature sensing block is detected by the detection end of the temperature sensor, which can simulate the temperature detection of the pot body installed on the disc-shaped base. The structural layout is more reasonable. While accurately measuring the temperature around the electric heating device, direct contact between the temperature sensor and the electric heating device is avoided, the burning rate of the temperature sensor is reduced, and electrochemical reaction between the temperature sensor and the electric heating device is avoided, thereby extending the service life of the electric hot pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the top plan structure of the utility model.

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0018] Figure 4 This utility model Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0019] Markings in the accompanying drawings: 1. Disc-shaped seat; 2. Electric heating device; 3. Temperature control switch; 4. Temperature sensor; 5. Mounting seat; 6. Mounting bracket; 7. Metal temperature sensing block; 8. Through hole; 9. Adjusting screw; 10. Snap ring; 11. Arc-shaped metal spring; 12. Limit rod; 13. Metal claw. DETAILED DESCRIPTION

[0020] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] Example 1

[0024] Please refer to Figure 1-3 , an electric hot pot base, which includes a disc-shaped base body 1, an electric heating device 2 installed in the disc-shaped base body 1, a temperature control switch 3 and a temperature sensor 4 electrically connected to the temperature control switch 3, the temperature control switch 3 is installed on the outer wall of the disc-shaped base body 1; it also includes a temperature sensing component, the temperature sensing component includes a mounting base 5 fixedly installed in the disc-shaped base body 1 and a mounting bracket 6 installed on the mounting base 5, a metal temperature sensing block 7 is fixedly installed at one end of the mounting bracket 6 near the middle of the disc-shaped base body 1, the temperature sensor 4 is installed on the metal temperature sensing block 7, the detection end of the temperature sensor 4 is in close contact with the metal temperature sensing block 7, the metal temperature sensing block 7 is located below the middle of the electric heating device 2, and the mounting bracket 6 is arranged along the radial direction of the disc-shaped base body 1.

[0025] The electric heating device 2 in this embodiment includes a soaking pan and electric heating tubes fixed to the lower side of the soaking pan. The number of the electric heating tubes is set according to needs, usually 3-5.

[0026] Please refer to Figure 3 The mounting seat 5 is located inside the disc-shaped seat body 1, away from the center of the disc-shaped seat body 1. The mounting frame 6 is hingedly mounted on the mounting seat 5. A through hole 8 is provided on the mounting frame 6, away from the center of the disc-shaped seat body 1. An adjusting screw 9 passing through the through hole 8 is screwed on the disc-shaped seat body 1. The adjusting screw 9 is provided with a snap ring 10 located at the upper and lower parts of the through hole 8 respectively; further, the outer diameter of the snap ring 10 is larger than the inner diameter of the through hole 8.

[0027] Specifically, the mounting frame 6 is a metal frame; further, the mounting frame 6 can be a thin-walled aluminum frame or a thin-walled copper frame or other thin-walled metal frame with good thermal conductivity.

[0028] The mounting frame 6 is made of a metal frame, which makes the mounting frame 6 have good thermal conductivity. The metal frame can fully absorb the radial heat in the disc-shaped seat body 1, and the metal temperature-sensing block 7 is integrally connected to the metal frame. Both are good heat conductors. After the metal frame and the metal temperature-sensing block 7 absorb heat in a balanced manner, the temperatures of the two are basically the same and close to the average temperature in the disc-shaped seat body 1. At this time, the temperature at the metal temperature-sensing block 7 measured by the temperature sensor 4 is closer to the average temperature in the disc-shaped seat body 1. Compared with only measuring the temperature value after the metal temperature-sensing block 7 absorbs heat alone, the equilibrium temperature value of the metal frame and the metal temperature-sensing block 7 after absorbing heat is more accurate, which can improve the accuracy of the temperature sensor 4 in detecting the temperature in the disc-shaped seat body 1.

[0029] After long-term use, the surface of the metal temperature-sensing block 7 is easily oxidized, forming a dense oxide layer with poor thermal conductivity on the surface, which affects the heat absorption effect of the metal temperature-sensing block 7, thereby causing a deviation in the temperature detection value of the temperature sensor 4. By rotating the adjusting screw 9, the clamping ring 10 on the upper part of the adjusting screw 9 pushes the mounting bracket 6 away from the disc-shaped seat body 1 and moves downward, while the end of the mounting bracket 6 close to the disc-shaped seat body 1 moves upward, so that the distance between the metal temperature-sensing block 7 and the electric heating device 2 is reduced. By reducing the distance, the loss of thermal conductivity of the metal temperature-sensing block 7 is compensated; at the same time, when the electric hot pot base is produced, the distance between the metal temperature-sensing block 7 and the electric heating device 2 is appropriately adjusted, and the heating temperature of the pot body by the electric heating device 2 and the temperature at the metal temperature-sensing block 7 are detected. The two measured temperature values ​​are compared. If the two temperatures are the same, it means that the metal temperature-sensing block 7 can accurately simulate the temperature inside the pot body, that is, the installation position of the metal temperature-sensing block 7 meets the standard, so as to ensure the accuracy of the temperature measurement by the temperature sensor 4.

[0030] Example 2

[0031] The electric hot pot base provided in Example 1 is further optimized, specifically, Figure 3As shown, an elastic connector is installed on the mounting seat 5, and the mounting frame 6 is elastically connected to the mounting frame 6 through the elastic connector; further, the elastic connector can be a tension spring, one end of the tension spring is fixedly connected to the mounting seat 5, and the other end of the spring is fixedly connected to the mounting frame 6 away from the mounting seat 5.

[0032] Specifically, the elastic connector is an arc-shaped metal spring 11, which is fixedly mounted on the mounting seat 5. The mounting frame 6 is provided with a through hole for allowing the arc-shaped metal spring 11 to pass through, and the arc-shaped metal spring 11 passes through the through hole.

[0033] Specifically, a limiting rod 12 is fixedly mounted on the mounting seat 5 , and the limiting rod 12 is located above the arc-shaped metal spring 11 .

[0034] The electric hot pot base provided in this embodiment can always maintain a certain elastic force between the mounting bracket 6 and the mounting seat 5 under the action of the elastic connecting member, thereby preventing the mounting bracket 6 from moving on its own; and the arc-shaped metal spring piece 11 has good elasticity. After the mounting bracket 6 is free from external force, the arc-shaped metal spring piece 11 can quickly reset the mounting bracket 6 on its own. At the same time, the arc-shaped metal spring piece 11 has a good thermal conductivity effect, which can absorb the heat from the middle and lower part of the disc-shaped seat body 1 and transfer it to the metal temperature sensing block 7, so that the temperature of the metal temperature sensing block 7 is closer to the average temperature value in the disc-shaped seat body 1; the limit rod 12 can limit the upward bending amount of the arc-shaped metal spring piece 11. The operator can clearly feel the change in resistance during the rotation of the adjusting screw 9 to prevent the temperature sensor 4 from moving up too much and contacting the bottom of the electric heating device 2.

[0035] Specifically, such as Figure 4 As shown, a bendable metal claw 13 is provided on the mounting frame 6, and the metal temperature sensing block 7 is fixedly connected to the mounting frame 6 through the metal claw 13; the metal temperature sensing block 7 is in close contact with the metal claw 13, so that good heat conduction is maintained between the two, and the convenience of disassembly and assembly of the metal temperature sensing block 7 at the mounting frame 6 can be improved.

[0036] The use process of the electric hot pot base provided by the utility model is as follows: the pot body is installed on the disc-shaped base body 1, and the mounting frame 6 is rotated about the hinge point with the mounting base 5 by rotating the adjustment screw 9 to adjust the distance between the metal temperature-sensing block 7 and the electric heating device 2. Before leaving the factory, the temperature values ​​of the pot body and the metal temperature-sensing block 7 when the electric heating device 2 is in operation are detected by an external auxiliary temperature detector. If the temperature values ​​of the two are the same, it means that the installation position of the metal temperature-sensing block 7 meets the requirements; during normal use, the desired temperature value can be set through the temperature control switch 3. When the temperature at the metal temperature-sensing block 7 measured by the temperature sensor 4 reaches the set value, it means that the temperature inside the pot body has reached the desired temperature, the temperature control switch 3 is turned off, and the electric heating device 2 stops heating.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Claims

1. An electric hot pot base, comprising a disc-shaped base (1), an electric heating device (2) installed in the disc-shaped base (1), a temperature control switch (3), and a temperature sensor (4) electrically connected to the temperature control switch (3), wherein the temperature control switch (3) is installed on the outer wall of the disc-shaped base (1); characterized in that: The electric heating device (2) further comprises a temperature sensing component, wherein the temperature sensing component comprises a mounting seat (5) fixedly mounted in the disc-shaped seat body (1) and a mounting frame (6) mounted on the mounting seat (5); a metal temperature sensing block (7) is fixedly mounted on one end of the mounting frame (6) adjacent to the middle of the disc-shaped seat body (1); the temperature sensor (4) is mounted on the metal temperature sensing block (7); the detection end of the temperature sensor (4) is in close contact with the metal temperature sensing block (7); the metal temperature sensing block (7) is located below the middle of the electric heating device (2); and the mounting frame (6) is arranged along the radial direction of the disc-shaped seat body (1).

2. The electric hot pot base according to claim 1, characterized in that: The mounting frame (6) is a metal frame.

3. The electric hot pot base according to claim 1 or 2, characterized in that: The mounting seat (5) is located in the disc-shaped seat body (1) away from the center of the disc-shaped seat body (1), the mounting frame (6) is hingedly mounted on the mounting seat (5), a through hole (8) is provided on the mounting frame (6) away from the center of the disc-shaped seat body (1), an adjusting screw (9) passing through the through hole (8) is screwed on the disc-shaped seat body (1), and the adjusting screw (9) is provided with a snap ring (10) located at the upper and lower parts of the through hole (8), respectively.

4. The electric hot pot base according to claim 3, characterized in that: An elastic connecting piece is installed on the mounting seat (5), and the mounting frame (6) is elastically connected to the mounting frame (6) via the elastic connecting piece.

5. The electric hot pot base according to claim 4, characterized in that: The elastic connecting member adopts an arc-shaped metal spring (11), and the arc-shaped metal spring (11) is fixedly mounted on the mounting seat (5). The mounting frame (6) is provided with a through opening allowing the arc-shaped metal spring (11) to pass through, and the arc-shaped metal spring (11) passes through the through opening.

6. The electric hot pot base according to claim 5, characterized in that: A limiting rod (12) is fixedly mounted on the mounting seat (5), and the limiting rod (12) is located above the arc-shaped metal spring (11).

7. The electric hot pot base according to claim 2, characterized in that: The mounting frame (6) is provided with a bendable metal claw (13), and the metal temperature sensing block (7) is fixedly connected to the mounting frame (6) via the metal claw (13).

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