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

Abstract

The utility model 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, which comprises a temperature sensor capable of detecting the temperature of the outer wall of the wok, and a limiting clamping piece is arranged on the outer wall of 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 detection device can accurately detect the wok wall temperature of the specific position of the wok.

Description

Technical Field

[0001] The utility model relates to the field of cooking utensils, in particular to a temperature measuring structure for detecting the temperature of a frying pan in a frying pan device. Background Art

[0002] In the process of automatic cooking, it is extremely important to control the cooking temperature and heat. In the prior art, 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 wok heating temperature according to the detected temperature information, and the accuracy of the temperature value collected by the temperature sensor becomes a key factor affecting temperature control.

[0003] The applicant has previously conducted research on how to achieve an installation structure for a temperature sensor with high temperature measurement accuracy and easy and quick disassembly and assembly of a wok, and submitted a utility model patent application to the State Intellectual Property Office on December 29, 2021 (name: Temperature measurement structure for detecting the temperature of a wok of a cooking machine; application number: 202123353227.9; authorization announcement number: CN217403626U). The application discloses a temperature measurement structure for a wok, including a temperature sensor. A long strip-shaped support plate with elastic properties extending from bottom to top is provided outside the wok. The temperature measuring probe of the temperature sensor is installed on the upper part of the support plate. When the wok is loaded into the cooking machine, the temperature measuring probe is tightly attached to the wall of the wok under the elastic action of the support plate, and the support plate rotates synchronously with the wok.

[0004] The above structure has the following deficiencies:

[0005] 1) Due to the poor disassembly and assembly of the wok, the support plate may be abnormally pressed occasionally, resulting in plastic deformation, the elastic force may become weaker after multiple disassembly and assembly of the wok, and the direction of the elastic force may change. This may lead to insufficient contact between the temperature probe and the outer wall of the wok, affecting the accuracy of measuring the wok temperature.

[0006] 2) Although the wok and the support plate are installed on the same component and rotate synchronously, due to the heavy weight of the wok, eccentric motion is inevitable during high-speed rotation, so displacement friction will occur between the temperature sensor and the wok, resulting in deviation in the measured temperature. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide a temperature measuring structure for detecting the temperature of a frying pan in a frying pan device, which has accurate temperature measurement and is easy to install and operate.

[0008] In order to solve the above technical problems, the utility model provides a temperature measuring structure for detecting the temperature of a wok in a wok device, which includes a temperature sensor that can detect the temperature of an outer wall of the wok. A limit clamp is provided on the outer wall of the wok. When the wok is loaded into the wok device from top to bottom, the limit clamp presses the temperature measuring probe of the temperature sensor against the wok wall.

[0009] Preferably, it further includes a support plate with elastic characteristics and in a long strip arc shape extending upward from the bottom, the temperature measuring probe is installed on the upper part of the support plate, and the lower part of the support plate is fixedly connected to the connecting member of the wok device.

[0010] Preferably, the limiting clamping member is composed of two symmetrically arranged connecting parts and an elastic pressing part bridged on the same side edges of the two connecting parts. The opposite sides of the two connecting parts and the pressing part are fixedly connected to the outer wall of the wok, and the two connecting parts, the pressing part and the outer wall of the wok enclose a limiting cavity for clamping the upper part of the support plate and the temperature measuring probe.

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

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

[0013] Preferably, the lower part of the pressing part is provided with an outwardly inclined slope to facilitate the insertion of the support plate with the temperature measuring probe into the limiting cavity.

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

[0015] Preferably, the limiting clamping member is fixedly connected to the outer wall of the wok at the upper part, the lower part is a free end, and the side of the lower part facing the wok wall is a clamping part slope inclined outwards from top to bottom. The top end surface of the support plate corresponding to the limiting clamping member is provided with a concave groove, and the side of the concave groove close to the wok wall is a groove slope inclined outwards from top to bottom. The slopes of the clamping part slope and the groove slope are the same.

[0016] Preferably, a positioning structure is provided between the connecting member and the wok to enable the upper and lower docking of the support plate and the limiting clamping member.

[0017] In the present utility model, by providing a limiting clamping member on the outer wall of the wok, during the process of quickly installing the wok into the accommodating cavity and connecting with the connecting member, the upper end of the support plate carries the temperature measuring probe and automatically inserts into the limiting clamping member. During the process of taking out the wok, the temperature measuring probe is naturally separated from the limiting clamping member 5. This temperature measuring structure can closely fit on the outer wall of the wok and rotate synchronously with the wok for fixed-point, positioning, and real-time contact temperature measurement without affecting the quick disassembly and assembly of the wok, avoiding wear, and ensuring the stability and accuracy of the temperature measurement by the temperature measuring probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded view of the wok device in the present utility model;

[0019] Figure 2Schematic diagram of the separated state of the temperature measuring probe and the limit clamping part of the temperature measuring structure for measuring the temperature of the wok in the wok device of the present utility model;

[0020] Figure 3 Schematic diagram of the normal working state of the temperature measuring probe and the limit clamping part of the temperature measuring structure for measuring the temperature of the wok in the wok device of the present utility model;

[0021] Figure 4 is Figure 2 Enlarged view of part A in

[0022] Figure 5 Schematic diagram of the second embodiment of the limit clamping part of the temperature measuring structure for measuring the temperature of the wok in the wok device of the present utility model;

[0023] Figure 6 Schematic diagram of the third embodiment of the limit clamping part of the temperature measuring structure for measuring the temperature of the wok in the wok device of the present utility model;

[0024] Figure 7 Schematic diagram of the first embodiment of the positioning structure between the wok and the connecting part of the present utility model;

[0025] Figure 8 Schematic diagram of the second embodiment of the positioning structure between the wok and the connecting part of the present utility model.

[0026] The reference numerals in the figure are: heating furnace core 10, accommodating cavity 11, wok 20, positioning hole 21a, positioning hole 21b, temperature sensor 3, temperature measuring probe 31, signal wire 32, support plate 4, concave groove 41c, groove inclined surface 42c, limit clamping part 5, connecting part 51a, pressing part 52a, limit cavity 53a, connecting part 51b, pressing part 52b, limit cavity 53b, rigid horizontal plate 51c, free end 52c, clamping part inclined surface 53c, connecting part 6, positioning boss 61a, positioning boss 61b, alignment scale line 62b, conductive slip ring 7, drive motor 8, locking part 9. Detailed implementation mode

[0027] As Figure 1 shown, the wok device of the present utility model includes a heating furnace core 10 with an upper open accommodating cavity 11, a connecting part installed at the bottom of the accommodating cavity 11 and capable of rotating relative to the heating furnace core 10, a wok 20 placed in the accommodating cavity 11 and capable of being quickly disassembled and assembled with the connecting part, and a temperature measuring structure.

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

[0029] The temperature measurement structure of the present utility model includes two parts. One part is the temperature sensor 3 which is separately arranged from the frying pan 20, and the other part is the limit clamping part 5 which is fixed on the outer wall of the frying pan 20 and corresponds to the temperature measurement probe 31.

[0030] The temperature sensor 3 is preferably a platinum resistance temperature sensor 3, and the preferred model is: PT100. It includes a temperature measurement probe 31 and a signal wire 32. The temperature measurement probe 31 is preferably a patch type and is supported by an auxiliary component fixed on the inner wall of the accommodation cavity 11 or the connecting component and is arranged between the inner wall of the accommodation cavity 11 and the outer wall of the frying pan 20. When the auxiliary component is installed on the inner wall of the accommodation cavity 11, the frying pan 20 and the heating furnace core 10 always remain relatively stationary.

[0031] When the frying pan 20 is loaded into the frying pan device from top to bottom, the temperature measurement probe 31 is inserted into the limit clamping part 5 and is fixed and tightly attached to a fixed position on the outer wall of the frying pan 20 under the action of the limit clamping part 5 to accurately detect the temperature at the specific position of the frying pan 20.

[0032] Preferably, in the present utility model, the auxiliary component is a support plate 4. The support plate 4 has elastic characteristics and is made of a non-magnetic material, preferably made of copper. Using a non-magnetic material for the support plate 4 can avoid its own heat conduction to the temperature measurement probe 31 during the process of the frying pan device heating the frying pan 20 by electromagnetic heating, which affects the accuracy of the temperature measurement probe 31 detecting the temperature of the frying pan 20.

[0033] Specifically, as Figure 2 described, the support plate 4 is in a long strip arc shape extending from bottom to top (with the opening direction of the frying pan 20 as the top and the bottom of the frying pan 20 as the bottom).

[0034] The support plate 4 is fixedly installed between the inner wall of the accommodation cavity 11 and the outer wall of the frying pan 20 in a manner that its lower part is fixedly connected to the connecting component. The temperature measurement probe 31 is installed on the upper part of the support plate 4. The signal wire 32 extends downward along the support plate 4 and passes through the connecting component to be connected to an external circuit. Preferably, a conductive slip ring 7 is provided below the connecting component. When the support plate 4 rotates with the signal wire 32 along with the connecting component, the conductive slip ring 7 can lead out the rotating signal wire 32 to be connected to the external circuit.

[0035] On the vertical plane passing through the axis of the support plate 4 and the frying pan 20, the center of curvature of the support plate 4 and the center of curvature of the corresponding outer wall of the frying pan 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 frying pan 20.

[0036] When the frying pan 20 is loaded into the frying pan device, the support plate 4 makes the temperature measurement probe 31 of the temperature sensor 3 on it tightly contact the outer wall of the frying pan 20 under the action of its own elastic force.

[0037] The driving motor 8 that drives the rotation of the connecting member is placed below the connecting member and fixedly connected to the heating furnace core 10. The output shaft of the driving motor 8 is fixedly connected to the connecting member. During the cooking process of the wok device, under the action of the driving motor 8, the connecting member carries the temperature measuring probe 31 and rotates synchronously with the wok 20, that is, real-time contact temperature measurement of the wok 20 is achieved.

[0038] The number of the support plates 4 is at least two and they are spaced along the circumferential direction of the wok 20. By setting the length of the support plates 4, the temperature measuring probe 31 can collect the temperatures at different height positions on the wok wall. Correspondingly, the same number of limit clamping members 5 are provided on the outer wall of the wok 20.

[0039] The specific installation structure and connection relationship among the wok 20, the connecting member, the support plate 4 and the temperature sensor 3 can all refer to the technical solution in the prior art (patent application number: 202123353227.9). The main improvement points of the present utility model are introduced in detail below: the specific structure of the limit clamping member 5.

[0040] As Figure 2 and Figure 3 shown, in the improved temperature measuring structure of the present utility model, during the process of quickly installing the wok 20 into the accommodating cavity 11 and connecting it with the connecting member, the upper end of the support plate 4 carries the temperature measuring probe 31 and automatically inserts into the limit clamping member 5. During the process of taking out the wok 20, the temperature measuring probe 31 and the limit clamping member 5 are naturally separated. This temperature measuring structure can closely fit on the outer wall of the wok 20 and rotate synchronously with the wok 20 for fixed-point, positioning and real-time contact temperature measurement without affecting the quick disassembly and assembly of the wok 20, avoiding abrasion and ensuring the stability and accuracy of the temperature measurement of the temperature measuring probe 31.

[0041] The limit clamping member 5 is also preferably made of non-magnetic material. The present utility model preferably has the following three specific structures for the limit clamping member 5:

[0042] 1. Limit cavity type

[0043] Its overall shape is similar to an arch shape, and one of the bridge openings faces downward (taking the Figure 2 paper surface direction as an example, the direction towards the bottom of the wok 20 is the lower of the limit clamping member 5, the direction towards the mouth of the wok 20 is the upper of the limit clamping member 5, the left is the left of the limit clamping member 5, and the right is the right of the limit clamping member 5) and is directly opposite to the direction of the support plate 4.

[0044] As Figure 4As shown, the limit clamping member 5 is composed of two plate-shaped connecting portions 51a and an elastic pressing portion 52a; the two connecting portions 51a are used to support the pressing portion 52a and suspend the pressing portion 52a on the opposite side of the temperature measurement point on the wall of the frying pan 20. The pressing portion 52a can produce elastic deformation under the action of an external force. Specifically, the inner sides of the two connecting portions 51a are fixedly connected to the outer wall of the frying pan 20 and are symmetrically distributed left and right. Their outer sides are respectively connected to both sides of the pressing portion 52a. The two connecting portions 51a, the pressing portion 52a and the outer wall of the frying pan 20 enclose a limiting cavity 53a for the upper part of the clamping support plate 4 and the temperature measurement probe 31.

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

[0046] As the support plate 4 is inserted into the limiting cavity 53a, the support plate 4 generates an outward extrusion force on the pressing plate. Relatively, the pressing portion 52a generates an inward pressure on the support plate 4, so that the temperature measurement probe 31 on the support plate 4 is tightly attached to the outer wall of the frying pan 20, and the two connecting portions 51a limit the support plate 4 in the left and right directions to position the temperature measurement probe 31 in the limiting cavity 53a.

[0047] Preferably, the limiting cavity 53a is wedge-shaped from bottom to top. A specific solution may be that the outer side edge of the connecting portion 51a is an inclined edge from bottom to top and from outside to inside, and the pressing portion 52a is connected to the connecting portion 51a in a manner parallel to the inclined edge.

[0048] This structure can set the entrance area of the limiting cavity 53a to be larger than the top area of the support plate 4, so as to facilitate the support plate 4 to smoothly insert into the limiting cavity 53a with the temperature measurement probe 31.

[0049] To make the positioning of the support plate 4 and the limit clamping member 5 more accurate and the insertion smoother, the lower part of the pressing portion 52a is provided with an outward inclined slope.

[0050] Preferably, the pressing portion 52a can be plate-shaped. The upper two side edges of it are respectively connected to the upper outer sides of the two connecting portions 51a, and the rest is a free end that can apply an elastic force to the support plate 4 towards the wall of the frying pan 20 (that is, the lower two side edges of it are in a separated state from the opposite connecting portion 51a). When the support plate 4 squeezes the pressing portion 52a, it takes the upper two side ends as the fulcrums and deforms outward at the lower part, and at the same time generates a reaction force towards the support plate 4.

[0051] Such as Figure 5As shown, the pressing part 52b can also be a "V"-shaped groove structure with an opening facing outward (away from the pot wall), and the two groove sides 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 groove sides to open outwards and deform, and at the same time generating a reaction force in the direction of the support plate 4.

[0053] The pressing part 52b can also be a "U" shape or other similar deformable shapes.

[0054] The structure of the above-mentioned limiting clamping part 5 is simple, and a semi-trumpet-shaped insertion opening with an opening facing downwards is formed on the pot wall, which is convenient for the positioning and installation of the temperature measuring probe 31.

[0055] 2. Wedge structure

[0056] As Figure 6 shown, the upper part of the limiting clamping part 5 is a rigid horizontal plate 51c with a certain elasticity, the inner end of the rigid horizontal plate 51c is fixedly connected to the outer wall of the frying pan 20, the lower part of the limiting clamping part 5 is a free end 52c extending downwards along the outer end of the rigid horizontal plate 51c, and the side of the lower part facing the outer wall of the frying pan 20 is a clamping part inclined surface 53c that slopes outwards from top to bottom, that is, the overall shape of the limiting clamping part 5 is similar to a hook-shaped structure with a wedge block.

[0057] Correspondingly, a concave groove 41c is provided on the top end surface of the support plate 4 corresponding to the limiting clamping part 5, and the side of the concave groove 41c close to the pot wall of the frying pan 20 is a groove inclined surface 42c that slopes outwards from top to bottom, and the slope of the clamping part inclined surface 53c is the same as that of the groove inclined surface 42c.

[0058] When the frying pan 20 is loaded into the frying pan device from top to bottom, the wedge block is inserted into the concave groove 41c, and the clamping part inclined surface 53c is wedged with the groove inclined surface 42c to press the support plate 4 to press the temperature measuring probe 31 against the outer wall of the frying pan 20, and under the action of the limiting clamping part 5 and the concave groove 41c, the temperature measuring probe 31 is limited to a fixed position to accurately detect the temperature of the specific position of the frying pan 20.

[0059] When the frying pan 20 is placed in the accommodating cavity 11, how to ensure that the temperature measuring probe 31 and the limiting clamping part 5 can be accurately docked. The present invention is realized by setting a positioning structure between the connecting part and the frying pan 20, and there are the following two kinds of positioning structures:

[0060] 1. As Figure 7As shown, the positioning structure includes a boss (hereinafter referred to as the positioning boss 61a) with a "D"-shaped or asymmetric polygon cross-section that is provided on the connecting member and extends upward, and a through hole (hereinafter referred to as the positioning hole 21a) that is provided at the center of the bottom of the frying pan 20 and is adapted to the shape of the positioning boss 61a. When the frying pan 20 is placed into the accommodating cavity 11, it is only necessary to dock and fix the positioning hole 21a with the positioning boss 61a. Specifically, the connecting member is fixed to the bottom of the frying pan 20 by a locking member 9 provided inside the frying pan 20. For example, 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), and it is locked into the frying pan 20 from the inside to fixedly connect the frying pan 20 and the connecting member, so that the temperature measuring probe 31 can be positioned and connected with the limit clamping member 5.

[0061] 2. As Figure 8 As shown, the positioning structure includes a boss (hereinafter referred to as the positioning boss 61b) with a circular or regular polygon cross-section that is provided on the connecting member and extends upward, and a through hole (hereinafter referred to as the positioning hole 21b) that is provided at the center of the bottom of the frying pan 20 and is adapted to the shape of the positioning boss 61b. Alignment scale lines 62b (which can be concave lines or convex lines) are distributed on the positioning boss 61b and beside the positioning through hole 21b. When the frying pan 20 is placed into the accommodating cavity 11, it is only necessary to align the two alignment scale lines 62b to vertically align the temperature measuring probe 31 and the limit clamping member 5. For the method of fixing the connecting member to the frying pan 20, refer to the first structure.

Claims

1. A temperature measuring structure for detecting the temperature of a wok in a wok device, which includes a temperature sensor capable of detecting the temperature of the outer wall of the wok, and is characterized in that, A limit clamping member (5) is provided on the outer wall of the wok (20). When the wok (20) is inserted into the wok device from top to bottom, the limit clamping member (5) presses the temperature measuring probe (31) of the temperature sensor (3) against the pot wall. The temperature sensor (3) is a platinum resistance temperature sensor.

2. The temperature measuring structure for detecting the temperature of a wok in a wok device according to claim 1, wherein, It further includes a support plate (4) with elastic characteristics and in the shape of a long strip arc extending from bottom to top. The temperature measuring probe (31) is installed on the upper part of the support plate (4), and the lower part of the support plate (4) is fixedly connected to the connecting member of the wok device.

3. The temperature measuring structure for detecting the temperature of the wok in the wok device according to claim 2, characterized in that, The limit clamping member (5) is composed of two symmetrically arranged connecting parts and an elastic pressing part bridged on the same side edges of the two connecting parts. One side of the two connecting parts opposite to the pressing part is fixedly connected to the outer wall of the wok (20). The two connecting parts, the pressing part and the outer wall of the wok (20) enclose a limit cavity for clamping the upper part of the support plate (4) and the temperature measuring probe (31).

4. The temperature measuring structure for detecting the temperature of the wok in the wok device according to claim 3, characterized in that, The limit cavity is in the shape of a wedge with a larger bottom and a smaller top.

5. The temperature measuring structure for detecting the temperature of the wok in the wok device according to claim 4, characterized in that, The pressing part is plate-shaped. The two side edges of its upper part are respectively connected to the two connecting parts, and the rest is a free end that can apply an elastic force to the support plate (4) towards the pot wall of the wok (20).

6. The temperature measuring structure for measuring the temperature of the wok in the wok device according to claim 5, characterized in that, The lower part of the pressing part is provided with an outwardly inclined slope that facilitates the support plate (4) to insert the temperature measuring probe (31) into the limit cavity.

7. The temperature measuring structure for detecting the temperature of the wok in the wok device according to claim 3, characterized in that, The pressing part is a "V"-shaped plate with the opening of the "V"-shaped plate facing outwards.

8. The temperature measuring structure for detecting the temperature of the wok in the wok device according to claim 2, wherein, The limit clamping member (5) has its upper part fixedly connected to the outer wall of the wok (20), and its lower part is a free end. The side of the lower part facing the pot wall of the wok (20) is a clamping part slope that is inclined outwards from top to bottom. The top surface of the upper end of the support plate (4) corresponding to the limit clamping member (5) is provided with a concave groove. The side of the concave groove close to the pot wall of the wok (20) is a groove slope that is inclined outwards from top to bottom. The slope of the clamping part slope is the same as that of the groove slope.

9. The temperature measuring structure for detecting the temperature of the wok in the wok device according to claim 5 or 6, characterized in that, A positioning structure is provided between the connecting member and the wok (20) to enable the upper and lower docking of the support plate (4) and the limit clamping member (5).

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