Temperature measuring structure for detecting temperature in wok in wok device
By setting a temperature sensor on the outer wall of the wok and a thermal conductive probe in the through hole, combined with a thermal insulation sleeve, the problem of accuracy of temperature detection inside the wok is solved, and more accurate temperature collection and sensor protection are achieved.
Patent Information
- Application Number
- CN202422508775.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-10-17
AI Technical Summary
In the prior art, methods for detecting the temperature inside a wok have the problem of poor accuracy, especially when measuring the temperature through the outer wall of the wok or infrared temperature measurement, which is interfered by environmental and food factors and cannot accurately measure the temperature inside the wok.
A temperature sensor is set on the outer wall of the frying pan, and a thermal probe is inserted through a through hole that passes through the pan wall. The thermal probe is close to the inner wall of the pan, and the outer end is connected to the sensor. Combined with a thermal insulation sleeve, heat exchange is avoided to achieve temperature conduction. Materials with good thermal conductivity such as aluminum alloy or copper are used to collect the temperature inside the pan at multiple points.
The accuracy of temperature detection in the wok is improved, the inconvenience and life loss of the sensor due to direct contact with the environment in the wok are avoided, and the accuracy and reliability of temperature measurement are enhanced.
Smart Images
Figure CN223426089U_ABST
Abstract
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 inside a frying pan in a frying pan device. Background Art
[0002] In the automatic cooking process, controlling the cooking temperature and heat is extremely important. In the 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 device controls the output of the wok heating temperature 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] The commonly used temperature measurement methods in the prior art are as follows:
[0004] 1. Install a temperature sensor on the outer wall of the wok to detect the temperature of the outer wall of the wok to estimate or convert the temperature inside the wok based on empirical values.
[0005] If this method is used to simply estimate the temperature inside the wok based on the wok's conduction efficiency, the result obtained will often deviate significantly from the actual temperature. This is because the temperature of the food is not only affected by heat conduction, but also by many other factors such as the ambient temperature and the temperature of the food itself. The ambient temperature and the temperature of the food itself are difficult to control, so the method of measuring the temperature outside the wok cannot always accurately obtain the temperature value inside the wok.
[0006] 2. Use infrared sensor to illuminate the inside of the wok to detect the temperature inside the wok.
[0007] The infrared temperature measurement method is also unable to accurately measure the temperature of ingredients due to many influencing factors such as the complex cooking environment, oil smoke gas temperature, etc. during the cooking process. Summary of the Invention
[0008] The technical problem to be solved by the utility model is to provide a temperature measuring structure for detecting the temperature inside a frying pan in a frying pan device, which has a simple structure and measures temperature closer to the actual temperature inside the pan.
[0009] In order to solve the above technical problems, the utility model provides a temperature measuring structure for measuring the temperature of the inner wall of a wok in a wok device, which includes a temperature sensor arranged outside the wok, and a through hole penetrating the wok wall is provided at a temperature measuring point set on the wok wall. A thermal conductive probe is provided in the through hole, and the inner end of the thermal conductive probe is arranged close to the inner wall of the wok, and the outer end is connected to the temperature measuring probe of the temperature sensor. An insulating sleeve is provided on the portion of the thermal conductive probe in the through hole to prevent heat exchange between the thermal conductive probe and the wall of the through hole.
[0010] Preferably, the thermal conductive probe is in the shape of a thumbtack or a rivet, with the cap end being the inner end and the tip being the outer end.
[0011] Preferably, a shallow accommodating groove surrounding the through hole and recessed into the pot wall is provided on the inner wall of the frying pan at the through hole, and the inner end is embedded in the shallow accommodating groove.
[0012] Preferably, the inner and outer end edges of the thermal insulation sleeve are respectively provided with inner and outer annular flanges extending outward in the circumferential direction, the inner annular flange is embedded in the accommodating shallow groove, and the outer annular flange is tightly attached to the outer wall of the wok to confine the cylindrical portion of the thermal insulation sleeve within the through hole.
[0013] Preferably, the section of the thermal conductive probe extending outside the wok is an external thread structure. When the thermal conductive probe is passed through the through hole from the inside to the outside, the inner end is pressed against the inner annular flange and embedded in the shallow accommodating groove. The outer end of the thermal conductive probe is placed outside the wok and is locked by a nut to fix the thermal conductive probe to the pot wall.
[0014] Preferably, a cylindrical blind hole is recessed inwardly along the axial direction of the thermal conductive probe on the outer end surface of the thermal conductive probe, and the temperature measuring probe is inserted into the cylindrical blind hole.
[0015] The utility model provides a heat-conducting probe on the wall of the wok that extends into the wok and contacts the cooking ingredients, thereby transmitting the temperature inside the wok to a temperature sensor arranged outside the wok, so that the temperature sensor can further detect the actual temperature inside the wok while avoiding the problems of inconvenience of replacing the temperature sensor directly by extending it into the wok and affecting the service life of the temperature sensor in acidic and alkaline environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a three-dimensional exploded view of a temperature measuring structure for measuring the inner wall temperature of a wok in a wok device of the present invention;
[0017] Figure 2 This is an exploded three-dimensional view from another perspective of the temperature measuring structure for measuring the inner wall temperature of a wok in a wok device of the present invention;
[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle.
[0019] The numbers in the figure are: frying pan 1, shallow accommodating groove 11, temperature sensor 2, temperature measuring probe 21, thermal conductivity probe 3, inner end 31, outer end 32, cylindrical blind hole 321, through hole 4, thermal insulation sleeve 5, barrel 51, inner annular flange 52, outer annular flange 53, nut 6. DETAILED DESCRIPTION
[0020] The present invention discloses a temperature measuring structure for measuring the temperature of the inner wall of a wok in a wok device (hereinafter referred to as the temperature measuring structure). The structure provides a heat-conducting probe 3 on the wall of the wok 1, which extends into the wok 1 (also referred to as the wok) and contacts the cooking ingredients. The probe transmits the temperature inside the wok to a temperature sensor 2 provided outside the wok 1, so that the temperature sensor 2 can further detect the actual temperature inside the wok 1 while avoiding the inconvenience of replacing the temperature sensor 2 directly by extending it into the wok, and the problem of affecting the service life of the temperature sensor 2 in acidic and alkaline environments.
[0021] Specifically, such as Figures 1-3 As shown, the temperature measuring structure includes a temperature sensor 2 arranged outside the wok 1 and a thermal conductive probe 3 that can contact the food in the wok 1.
[0022] The temperature sensor 2 is preferably a platinum resistance temperature sensor 2 , and its package can be a patch type or a cylindrical type. It is fixed outside the frying pan 1 and close to the outer wall of the frying pan 1 through a mounting frame.
[0023] The frying pan 1 is preferably a composite pan made of multi-layer metal materials, and the thermal conductive probe 3 is made of a material with better thermal conductivity than the frying pan 1, preferably a metal material such as aluminum alloy or copper.
[0024] A through hole 4 is provided on the wall of the wok 1 and passes through the wall. The through hole 4 is set at the position where the temperature in the wok needs to be collected (that is, the set temperature measurement point), preferably at a position on the wall of the wok 1 close to the bottom of the wok 1. The through hole 4 can be set in multiple positions at different heights as needed, that is, multi-point collection is performed at different positions to more accurately analyze the actual temperature in the wok.
[0025] The thermal probe 3 is positioned within the through hole 4, with its inner end 31 positioned closely against the inner wall of the wok 1 to prevent excessive protrusion and the food from catching on the probe 3 and causing uneven heating. The outer end 32 of the thermal probe 3 is connected to the temperature probe 21 of the temperature sensor 2. The thermal probe 3 transmits the temperature inside the wok 1 to the temperature sensor 2 outside the wok 1 via a more precise conduction method relative to the wok 1 wall, thereby accurately measuring the temperature of the food inside the wok.
[0026] Preferably, the thermal conductivity probe 3 is in the shape of a thumbtack or rivet, with the cap end serving as the inner end 31 and the tip serving as the outer end 32. The outer diameter of the inner end 31 is larger than the diameter of the through hole 4. By allowing the cap end with a larger area to serve as the inner end 31 and contact the inner wall of the pot, the heat conduction area is increased, thereby improving the accuracy of temperature acquisition.
[0027] In order to further ensure the smoothness of the inner wall of the wok 1, a shallow accommodating groove 11 is provided on the inner wall of the wok 1 at the through hole 4, which surrounds the through hole 4 and is recessed into the pot wall. The inner end 31 is embedded in the shallow accommodating groove 11, and the end surface of the inner end 31 is spliced with the inner wall of the wok 1 to form a neat surface. That is, when the inner wall of the wok 1 at the position where the shallow accommodating groove 11 is located is a curved surface, the end surface is also a curved surface, and the curvature is the same or similar to that of the inner wall of the wok 1 at the corresponding position; when the inner wall of the wok 1 at the position where the shallow accommodating groove 11 is located is a flat surface, the end surface is a flat surface flush with the inner wall of the wok 1 at the corresponding position.
[0028] In order to prevent the wall temperature of the wok 1 from causing external interference to the temperature of the thermal probe 3, a heat insulating sleeve 5 is provided on the portion of the thermal probe 3 in the through hole 4 to prevent heat exchange between the thermal probe 3 and the wall of the through hole 4.
[0029] The thermal insulation sleeve 5 can be made of ceramic, ultra-fine glass wool, high-silica wool or aerogel felt, or a vacuum insulation sleeve can be used.
[0030] The heat insulating sleeve 5 can be a circular cylindrical structure with a length similar to that of the through hole 4. The outer diameter of the heat insulating sleeve 5 is slightly smaller than the diameter of the through hole 4. When it is made of hard material, it can be interference fit in the through hole 4.
[0031] like Figure 3 As shown, in order for the thermal insulation sleeve 5 to provide insulation while also sealing the gap between the thermal probe 3 and the through-hole 4, the thermal insulation sleeve 5 is preferably made of food-grade silicone or a multi-layer structure composed of a combination of food-grade silicone wrapped with insulation cotton or other insulation materials with better insulation properties. To further enhance the sealing effect, inner and outer annular flanges 53 extending outward along the circumferential direction are provided on the inner and outer ends of the thermal insulation sleeve 5, respectively. The inner annular flange 52 is embedded in the shallow accommodating groove 11, and the outer annular flange 53 is tightly attached to the outer wall of the wok 1, thereby confining the barrel 51 of the thermal insulation sleeve 5 (the barrel 51 is the circular cylindrical structure) within the through-hole 4.
[0032] When the thermal probe 3 passes through the thermal insulation sleeve 5 , the cylindrical portion 51 is pressed against the inner wall of the through hole 4 to seal the gap between the thermal probe 3 and the through hole 4 to prevent the soup in the frying pan 1 from leaking.
[0033] Specifically, in order to achieve rapid installation of the thermal probe 3, the outer peripheral wall of a section of the thermal probe 3 extending outside the wok 1 is set to an external thread structure. When the thermal probe 3 passes through the through hole 4 from the inside to the outside, the inner end 31 is pressed against the inner annular flange 52 and embedded in the shallow accommodating groove 11. The outer end 32 is placed outside the wok 1 and is locked by the nut 6 to fix the thermal probe 3 on the wall of the wok 1.
[0034] In order to increase the contact area between the temperature measuring probe 21 and the thermal conductive probe 3, and to make the temperature measuring probe 21 closer to the food in the wok 1 (shorten the intermediate heat transfer path), a cylindrical blind hole 321 is recessed inward along the axial direction of the thermal conductive probe 3 on the outer end 32 of the thermal conductive probe 3, and the temperature measuring probe 21 (preferably cylindrical) is inserted into the cylindrical blind hole 321.
[0035] By inserting the temperature measuring probe 21 into the thermal conductive probe 3, the thermal conductive probe 3 and the temperature measuring probe 21 are similar to an integrated structure. The wrapped installation not only increases the heat conduction area, but also avoids the influence of the external ambient temperature and interference with the thermal conductivity.
Claims
1. A temperature measuring structure for detecting the temperature inside a wok in a wok device, comprising a temperature sensor (2) arranged outside the wok (1), characterized in that: A through hole (4) penetrating the wok wall is provided at a temperature measuring point set on the wok wall (1). A heat conducting probe (3) is provided in the through hole (4). The inner end (31) of the heat conducting probe (3) is arranged in close contact with the inner wall of the wok (1), and the outer end (32) is connected to the temperature measuring probe (21) of the temperature sensor (2). A heat insulating sleeve (5) is provided on a portion of the heat conducting probe (3) in the through hole (4) to prevent heat exchange between the heat conducting probe (3) and the wall of the through hole (4).
2. The temperature measuring structure for detecting the temperature inside a frying pan in a frying pan device according to claim 1, characterized in that: The thermal conductive probe (3) is in the shape of a thumbtack or a rivet, with its cap end being the inner end (31) and its tip being the outer end (32).
3. The temperature measuring structure for detecting the temperature inside a frying pan in a frying pan device according to claim 2, characterized in that: A shallow accommodating groove (11) is provided on the inner wall of the frying pan (1) at the through hole (4), surrounding the through hole (4) and recessed into the pan wall. The inner end (31) is embedded in the shallow accommodating groove (11).
4. The temperature measuring structure for detecting the temperature inside a frying pan in a frying pan device according to claim 3, characterized in that: The inner and outer ends of the heat-insulating sleeve (5) are respectively provided with inner and outer annular flanges (53) extending outward in the circumferential direction, the inner annular flange (52) is embedded in the shallow accommodating groove (11), and the outer annular flange (53) is tightly attached to the outer wall of the frying pan (1) to confine the barrel portion (51) of the heat-insulating sleeve (5) in the through hole (4).
5. The temperature measuring structure for detecting the temperature inside a frying pan in a frying pan device according to claim 4, characterized in that: The section of the thermal conductive probe (3) extending outside the wok (1) is an external threaded structure. When the thermal conductive probe (3) passes through the through hole (4) from the inside to the outside, the inner end (31) is pressed against the inner annular flange (52) and embedded in the accommodating shallow groove (11). The outer end (32) of the thermal conductive probe (3) is placed outside the wok (1) and is locked by a nut (6) to fix the thermal conductive probe (3) on the wok wall.
6. The temperature measuring structure for detecting the temperature inside a frying pan in a frying pan device according to claim 5, characterized in that: A cylindrical blind hole (321) is recessed inwardly along the axial direction of the thermal conductive probe (3) on the outer end (32) of the thermal conductive probe (3), and the temperature measuring probe (21) is inserted into the cylindrical blind hole (321).