Temperature measuring structure for detecting temperature of frying pan in frying pan device

Abstract

The invention relates to the technical field of cooking equipment, and discloses a temperature measuring structure for detecting the temperature of a wok in a wok device, the temperature measuring structure comprises a temperature sensor capable of detecting the temperature of the outer wall of the wok, a limiting clamping piece is arranged on the outer wall of the wok, and when the wok is installed in the wok device from top to bottom, the limiting clamping piece is clamped on the wok. And the temperature measuring probe of the temperature sensor is tightly pressed on the pot wall by the limiting clamping piece. The wok wall temperature of the specific position of the wok can be accurately detected.

Description

Technical Field

[0001] This invention relates to the field of cooking utensils, and more particularly to a temperature measuring structure for detecting the temperature of a wok in a wok-making device. Background Technology

[0002] In automatic cooking, the control of cooking temperature and heat is extremely important. In existing technology, the commonly used temperature control method is to detect the temperature of the wok through a temperature sensor. The control circuit of the cooking equipment controls the output of the heating temperature of the wok based on the detected temperature information. The accuracy of the temperature value collected by the temperature sensor becomes a key factor affecting temperature control.

[0003] Previously, the applicant conducted research on how to achieve a temperature sensor installation structure that provides high temperature measurement accuracy and allows for easy and quick assembly and disassembly of a wok. On December 29, 2021, the applicant submitted an invention patent application to the State Intellectual Property Office (name: Temperature Measurement Structure for Detecting the Temperature of a Wok in a Cooking Machine; application number: 202123353227.9; authorization announcement number: CN217403626U). The application disclosed a temperature measurement structure for a wok, including a temperature sensor. An elastic, elongated support plate extending from bottom to top is provided outside the wok. The temperature sensor's probe is installed on the upper part of the support plate. When the wok is placed in the cooking machine, the probe adheres tightly to the wok wall under the elastic action of the support plate, and the support plate rotates synchronously with the wok.

[0004] The above structure has the following shortcomings:

[0005] 1) Occasionally, improper disassembly and assembly of the wok can cause abnormal pressure on the support plate, resulting in plastic deformation. After repeated disassembly and assembly of the wok, the elasticity weakens and the direction of the elasticity changes. This can lead to insufficient contact between the temperature probe and the outer wall of the wok, affecting the accuracy of the temperature measurement.

[0006] 2) Although the wok and the support plate are mounted on the same component and rotate synchronously, the wok is heavy and inevitably produces eccentric motion during high-speed rotation. As a result, displacement friction will occur between the temperature sensor and the wok, leading to deviations in the measured temperature. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a temperature measuring structure for detecting the temperature of a wok in a wok device that is accurate in temperature measurement and easy to install and operate.

[0008] To solve the above-mentioned technical problems, the present invention provides a temperature measuring structure for detecting the temperature of a wok in a wok device. It includes a temperature sensor that can detect the temperature of the outer wall of the wok, and a limiting fastener is provided on the outer wall of the wok. When the wok is installed into the wok device from top to bottom, the limiting fastener presses the temperature probe of the temperature sensor tightly against the wok wall.

[0009] Preferably, it also includes a support plate with elastic properties and an elongated arc shape extending from bottom to top, the temperature probe being installed on the upper part of the support plate, and the lower part of the support plate being fixed to the connector of the wok device.

[0010] Preferably, the limiting latching component consists of two symmetrically arranged connecting parts and an elastic clamping part mounted on the same side of the two connecting parts. The two connecting parts and the side opposite to the clamping part are fixed to the outer wall of the wok. The two connecting parts, the clamping part and the outer wall of the wok together form a limiting cavity for locking the upper part of the support plate and the temperature probe.

[0011] Preferably, the limiting cavity is wedge-shaped, with a larger bottom and a smaller top.

[0012] Preferably, the pressing part is plate-shaped, with its upper two sides respectively connected to two connecting parts, and the remaining part is a free end that can apply elastic force to the support plate towards the wall of the wok.

[0013] Preferably, the lower part of the clamping part is provided with an outwardly inclined surface that facilitates the insertion of the support plate carrying the temperature measuring probe into the limiting cavity.

[0014] Preferably, the pressing part is a "V" shaped plate with the opening of the "V" shaped plate facing outward.

[0015] Preferably, the limiting snap-fit ​​component is fixed to the outer wall of the wok at the top and has a free end at the bottom. The side of the bottom part facing the wok wall is a snap-fit ​​inclined surface that slopes outward from top to bottom. The top surface of the upper end of the support plate corresponding to the limiting snap-fit ​​component is provided with a concave groove. The side of the concave groove near the wok wall is a groove inclined surface that slopes outward from top to bottom. The slope of the snap-fit ​​inclined surface and the slope of the groove inclined surface are the same.

[0016] Preferably, a positioning structure is provided between the connector and the wok, which allows the support plate and the limiting snap-fit ​​connector to align vertically.

[0017] The present invention provides a limiting latch on the outer wall of the wok. During the rapid installation of the wok into the accommodating cavity and connecting parts, the upper end of the support plate carrying the temperature probe automatically inserts into the limiting latch. During the removal of the wok, the temperature probe naturally separates from the limiting latch. This temperature measuring structure can fit tightly against the outer wall of the wok and rotate synchronously with the wok to perform fixed-point, positioning, and real-time contact temperature measurement without affecting the rapid disassembly and assembly of the wok, thus avoiding wear and ensuring the stability and accuracy of the temperature measurement by the temperature probe. Attached Figure Description

[0018] Figure 1 This is an exploded view of the wok device in this invention;

[0019] Figure 2This is a schematic diagram of the temperature measuring probe and the limiting clip of the temperature measuring structure of the present invention for detecting the temperature of the wok in the wok device, in the separated state.

[0020] Figure 3 This is a schematic diagram of the temperature measuring probe and the limiting clip of the temperature measuring structure of the temperature measuring structure for detecting the temperature of the wok in the wok device of the present invention under normal working conditions.

[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the second embodiment of the limiting clip of the temperature measuring structure for detecting the temperature of a wok in a wok-making device according to the present invention;

[0023] Figure 6 This is a schematic diagram of the third embodiment of the limiting clip of the temperature measuring structure for detecting the temperature of a wok in a wok-making device according to the present invention.

[0024] Figure 7 This is a schematic diagram of a first embodiment of the positioning structure of the wok and connector of the present invention;

[0025] Figure 8 This is a schematic diagram of a second embodiment of the positioning structure of the wok and connector of the present invention.

[0026] The components in the diagram are labeled as follows: heating furnace core 10, accommodating cavity 11, wok 20, positioning hole 21a, positioning hole 21b, temperature sensor 3, temperature probe 31, signal line 32, support plate 4, concave groove 41c, groove slope 42c, limiting snap fastener 5, connecting part 51a, pressing part 52a, limiting cavity 53a, connecting part 51b, pressing part 52b, limiting cavity 53b, rigid horizontal plate 51c, free end 52c, snap fastener slope 53c, connecting part 6, positioning boss 61a, positioning boss 61b, alignment scale line 62b, conductive slip ring 7, drive motor 8, locking component 9. Detailed Implementation

[0027] like Figure 1 As shown, the wok device of the present invention includes a heating core 10 with an open upper accommodating cavity 11, a connector installed at the bottom of the accommodating cavity 11 and capable of rotating relative to the heating core 10, a wok 20 placed in the accommodating cavity 11 and capable of being quickly attached and detached from the connector, and a temperature measuring structure.

[0028] The wok 20 has a cylindrical upper part and an arc-shaped vertical cross-section in the lower part.

[0029] The temperature measuring structure of the present invention includes two parts: one part is a temperature sensor 3 that is separately disposed from the wok 20, and the other part is a limiting clip 5 that is fixed on the outer wall of the wok 20 and corresponds to the temperature measuring probe 31.

[0030] The temperature sensor 3 is preferably a platinum resistance temperature sensor 3, preferably model PT100, which includes a temperature probe 31 and a signal line 32. The temperature probe 31 is preferably a patch type and is supported between the inner wall of the accommodating cavity 11 and the outer wall of the wok 20 by an auxiliary component fixed on the inner wall of the accommodating cavity 11 or the connector. When the auxiliary component is installed on the inner wall of the accommodating cavity 11, the wok 20 and the heating furnace core 10 always remain relatively stationary.

[0031] When the wok 20 is installed into the wok device from top to bottom, the temperature probe 31 is inserted into the limiting clip 5 and fixed in a fixed position on the outer wall of the wok 20 under the action of the limiting clip 5, so as to accurately detect the temperature of the specific position of the wok 20.

[0032] Preferably, in this invention, the auxiliary component is a support plate 4. The support plate 4 has elastic properties and is made of a non-magnetic material, preferably copper. The use of a non-magnetic material for the support plate 4 can prevent the heat generated by the support plate 4 itself from being conducted to the temperature probe 31 during the process of the wok device heating the wok 20 through electromagnetic heating, thus affecting the accuracy of the temperature probe 31 in detecting the temperature of the wok 20.

[0033] Specifically, such as Figure 2 The support plate 4 is an elongated arc shape extending from bottom to top (with the opening of the wok 20 as the top and the bottom of the wok 20 as the bottom).

[0034] The support plate 4 is fixedly installed between the inner wall of the accommodating cavity 11 and the outer wall of the wok 20 by means of its lower part being fixed to the connector. The temperature probe 31 is installed on the upper part of the support plate 4. The signal line 32 extends downward along the support plate 4 and passes through the connector to connect with the external circuit. Preferably, a conductive slip ring 7 is provided below the connector. When the support plate 4 carries the signal line 32 and rotates with the connector, the conductive slip ring 7 can guide the rotating signal line 32 to connect with the external circuit.

[0035] On the vertical plane passing through the axis of the support plate 4 and the wok 20, the center of curvature of the support plate 4 and the center of curvature of the corresponding outer wall of the wok 20 are located on the same side, and the curvature of the support plate 4 is greater than the curvature of the outer wall of the wok 20.

[0036] When the wok 20 is installed into the wok device, the support plate 4, under its own elastic force, ensures that the temperature sensor 31 on it is in close contact with the outer wall of the wok 20.

[0037] The drive motor 8 that drives the connector to rotate is placed below the connector and fixedly connected to the heating furnace core 10. The output shaft of the drive motor 8 is fixedly connected to the connector. During the cooking process of the wok device, under the action of the drive motor 8, the connector carrying the temperature probe 31 rotates synchronously with the wok 20, thereby realizing real-time contact temperature measurement of the wok 20.

[0038] The number of support plates 4 is at least two and they are distributed at intervals along the circumference of the wok 20. By setting the length of the support plates 4, the temperature probe 31 can collect the temperature at different heights on the wok wall. Correspondingly, the same number of limiting clips 5 are provided on the outer wall of the wok 20.

[0039] The specific installation structure and connection relationship between the wok 20, the connector, the support plate 4 and the temperature sensor 3 can be found in the prior art (patent application number: 202123353227.9). The main improvement of the present invention is described in detail below: the specific structure of the limiting snap-fit ​​connector 5.

[0040] like Figure 2 and Figure 3 As shown, the improved temperature measuring structure of this invention allows the temperature probe 31 on the upper end of the support plate 4 to automatically insert into the limiting clip 5 during the rapid installation of the wok 20 into the accommodating cavity 11 and the connecting piece. During the removal of the wok 20, the temperature probe 31 naturally separates from the limiting clip 5. This temperature measuring structure can fit tightly against the outer wall of the wok 20 and rotate synchronously with the wok 20 to perform fixed-point, positioning, and real-time contact temperature measurement without affecting the rapid disassembly and assembly of the wok 20, thus avoiding wear and ensuring the stability and accuracy of the temperature measurement by the temperature probe 31.

[0041] The limiting card connector 5 is preferably made of a non-magnetic material. The specific structures of the limiting card connector 5 preferred in this invention are as follows:

[0042] 1. Limiting cavity type

[0043] Its overall shape resembles an arched bridge, with one arch facing downwards (as shown in the image). Figure 2 Taking the direction of the paper as an example, the direction towards the bottom of the wok 20 is the lower part of the limiting clip 5, the direction towards the opening of the wok 20 is the upper part of the limiting clip 5, the left is the left of the limiting clip 5, the right is the right of the limiting clip 5, and the direction is directly opposite to the support plate 4.

[0044] like Figure 4As shown, the limiting latching member 5 consists of two plate-shaped connecting parts 51a and an elastic pressing part 52a. The two connecting parts 51a are used to support the pressing part 52a and suspend the pressing part 52a on the opposite side of the temperature measuring point on the wall of the wok 20. The pressing part 52a can produce elastic deformation under the action of external force. Specifically, the inner sides of the two connecting parts 51a are fixedly connected to the outer wall of the wok 20 and are symmetrically distributed on the left and right. Their outer sides are respectively connected to the two sides of the pressing part 52a. The two connecting parts 51a, the pressing part 52a and the outer wall of the wok 20 form a limiting cavity 53a for locking the upper part of the support plate 4 and the temperature measuring probe 31.

[0045] The minimum distance between the two connecting parts 51a is slightly greater than the width L of the upper part of the support plate 4 (in the horizontal direction). In the natural state, the maximum distance between the pressing part 52a and the wall of the wok 20 is less than the distance between the inner side of the temperature probe 31 (the side in contact with the wok 20) ​​and the outer side of the support plate 4 (the side facing away from the wok 20).

[0046] As the support plate 4 is inserted into the limiting cavity 53a, the support plate 4 exerts an outward squeezing force on the pressing plate. Conversely, the pressing part 52a exerts an inward pressure on the support plate 4, thereby causing the temperature probe 31 on the support plate 4 to adhere tightly to the outer wall of the wok 20. The two connecting parts 51a limit the support plate 4 in the left and right directions to position the temperature probe 31 in the limiting cavity 53a.

[0047] Preferably, the limiting cavity 53a is wedge-shaped from bottom to top. Specifically, the outer side of the connecting part 51a can be an inclined side from bottom to top and from outside to inside, and the pressing part 52a is connected to the connecting part 51a in a manner parallel to the inclined side.

[0048] This structure allows the inlet area of ​​the limiting cavity 53a to be larger than the top area of ​​the support plate 4, so that the support plate 4 carrying the temperature probe 31 can be smoothly inserted into the limiting cavity 53a.

[0049] To ensure more accurate positioning and smoother insertion between the support plate 4 and the limiting connector 5, the lower part of the pressing part 52a is provided with an outwardly inclined slope.

[0050] Preferably, the pressing part 52a can be plate-shaped, with its upper two sides respectively connected to the upper outer sides of the two connecting parts 51a, and the remaining part having a free end that can apply elastic force to the support plate 4 in the direction of the wok wall 20 (i.e., its lower two sides are separated from the corresponding connecting parts 51a). When the support plate 4 presses the pressing part 52a, it uses the upper two sides as fulcrums and deforms outward in the lower part, while generating a reaction force in the direction of the support plate 4.

[0051] like Figure 5As shown, the pressing part 52b can also be a "V" shaped groove structure with the opening facing outward (away from the pot wall), and the two sides of the groove are respectively connected to the two connecting parts 51b.

[0052] When the support plate 4 is inserted into the limiting cavity 53b, the support plate 4 presses the bottom of the "V" shaped groove, causing the two sides of the groove to open to both sides and deform, while generating a reaction force in the direction of the support plate 4.

[0053] The clamping part 52b can also be U-shaped or other similar shapes that can be deformed.

[0054] The aforementioned limiting connector 5 has a simple structure, forming a downward-facing semi-flare-shaped insertion port on the pot wall, which facilitates the positioning and installation of the temperature probe 31.

[0055] 2. Wedge structure

[0056] like Figure 6 As shown, the upper part of the limiting snap-fit ​​5 is a rigid horizontal plate 51c with a certain elasticity. The inner end of the rigid horizontal plate 51c is fixed to the outer wall of the wok 20. The lower part of the limiting snap-fit ​​5 is a free end 52c extending downward along the outer end of the rigid horizontal plate 51c. The side of the lower part facing the outer wall of the wok 20 is a snap-fit ​​inclined surface 53c that slopes outward from top to bottom. That is, the overall shape of the limiting snap-fit ​​5 is similar to a hook-shaped structure with a wedge block.

[0057] Correspondingly, a concave groove 41c is provided on the top surface of the upper end of the support plate 4, which is corresponding to the limiting snap fastener 5. The side of the concave groove 41c near the wall of the wok 20 is a groove slope 42c that slopes outward from top to bottom. The slope of the snap fastener slope 53c is the same as that of the groove slope 42c.

[0058] When the wok 20 is installed into the wok device from top to bottom, the wedge block is inserted into the concave groove 41c, and the inclined surface 53c of the clamping piece and the inclined surface 42c of the groove wedge together to press the support plate 4 and press the temperature probe 31 tightly onto the outer wall of the wok 20. Under the action of the limiting clamping piece 5 and the concave groove 41c, the temperature probe 31 is limited to a fixed position to accurately detect the temperature at a specific location of the wok 20.

[0059] When placing the wok 20 into the accommodating cavity 11, how can we ensure that the temperature probe 31 and the limiting connector 5 can accurately align? This invention achieves this by setting a positioning structure between the connector and the wok 20. This positioning structure has the following two types:

[0060] 1. For example Figure 7As shown, the positioning structure includes a boss with a "D"-shaped or asymmetrical polygonal cross-section (hereinafter referred to as positioning boss 61a) that is provided on the connector and extends upward, and a through hole (hereinafter referred to as positioning hole 21a) that is provided at the center of the bottom of the wok 20 and is adapted to the shape of positioning boss 61a. When the wok 20 is placed into the accommodating cavity 11, it is only necessary to align the positioning hole 21a with the positioning boss 61a and fix it. Specifically, the connector is fixed to the bottom of the wok 20 by the locking member 9 provided in the wok 20. If the positioning boss 61a has an internal thread structure, the locking member 9 is a screw with an umbrella cap (the diameter of the umbrella cap is larger than the maximum diameter of the positioning boss 61a). The screw is locked in from the wok 20 to fix the wok 20 to the connector, so that the temperature probe 31 is positioned and connected to the limiting clip 5.

[0061] 2. For example Figure 8 As shown, the positioning structure includes a boss with a circular or regular polygonal cross-section (hereinafter referred to as positioning boss 61b) that is provided on the connector and extends upward, and a through hole (hereinafter referred to as positioning hole 21b) that is provided at the center of the bottom of the wok 20 and is adapted to the shape of the positioning boss 61b. Alignment scale lines 62b (which can be concave or convex lines) are distributed on the positioning boss 61b and the side of the positioning through hole 21b. When the wok 20 is placed into the accommodating cavity 11, the temperature probe 31 and the limiting clip 5 can be aligned vertically by simply aligning the two alignment scale lines 62b. The method of fixing the connector to the wok 20 is the same as the first structure.

Claims

1. A temperature measuring structure for detecting the temperature of a wok in a wok-making device, comprising a temperature sensor capable of detecting the temperature of the outer wall of the wok, characterized in that, A limiting clip (5) is provided on the outer wall of the wok (20). When the wok (20) is installed into the wok device from top to bottom, the limiting clip (5) presses the temperature probe (31) of the temperature sensor (3) onto the wok wall.

2. The temperature measuring structure for detecting the temperature of a wok in a wok-making device as described in claim 1, characterized in that, It also includes a support plate (4) with elastic properties and an elongated arc shape extending from bottom to top. The temperature probe (31) is installed on the upper part of the support plate (4), and the lower part of the support plate (4) is fixed to the connector of the wok device.

3. The temperature measuring structure for detecting the temperature of the wok in the wok-making device as described in claim 2, characterized in that, The limiting snap-fit ​​component (5) consists of two symmetrically arranged connecting parts and a pressing part that is elastically mounted on the same side of the two connecting parts. The two connecting parts and the pressing part are fixed to the outer wall of the wok (20). The two connecting parts, the pressing part and the outer wall of the wok (20) together form a limiting cavity for the upper part of the support plate (4) and the temperature probe (31).

4. The temperature measuring structure for detecting the temperature of the wok in the wok-making device as described in claim 3, characterized in that, The limiting cavity is wedge-shaped, wider at the bottom and narrower at the top.

5. The temperature measuring structure for detecting the temperature of the wok in the wok-making device as described in claim 4, characterized in that, The pressing part is plate-shaped, with its upper two sides connected to two connecting parts respectively, and the remaining part is a free end that can apply elastic force to the support plate (4) towards the pot wall of the wok (20).

6. The temperature measuring structure for detecting the temperature of the wok in the wok-making device as described in claim 5, characterized in that, The lower part of the clamping part is provided with an outward inclined surface that facilitates the insertion of the support plate (4) carrying the temperature probe (31) into the limiting cavity.

7. The temperature measuring structure for detecting the temperature of a wok in a wok-making device as described in claim 3, characterized in that, The clamping part is a "V" shaped plate with the opening of the "V" shaped plate facing outward.

8. The temperature measuring structure for detecting the temperature of a wok in a wok-making device as described in claim 2, characterized in that, The limiting snap-fit ​​component (5) is fixed to the outer wall of the wok (20) at the top and is free at the bottom. The side of the bottom facing the wok wall is a snap-fit ​​inclined surface that slopes outward from top to bottom. The top surface of the upper end of the support plate (4) corresponding to the limiting snap-fit ​​component (5) is provided with a concave groove. The side of the concave groove near the wok wall is a groove inclined surface that slopes outward from top to bottom. The slope of the snap-fit ​​inclined surface and the slope of the groove inclined surface are the same.

9. The temperature measuring structure for detecting the temperature of a wok in a wok-making device as described in claim 5 or 6, characterized in that, A positioning structure is provided between the connector and the wok (20) to allow the support plate (4) and the limiting snap-fit ​​member (5) to align vertically.

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