Kettle body structure and liquid heating equipment

Abstract

The embodiment of the utility model provides a pot body structure and a liquid heating device, the pot body structure comprises a pot body structure, two opposite sides of the pot body structure are respectively provided with a water filling port and an assembling port; the heat-conducting fin is connected with the assembly opening in a welding manner; wherein the kettle body structure is made of a first glass material, the heat-conducting fin is made of a second glass material, and the maximum thickness difference value corresponding to the heat-conducting fin is smaller than the maximum thickness difference value corresponding to the kettle body structure. According to the technical scheme, the heat conducting piece is connected to the kettle body structure in a welding mode, the problem that heat transfer of the bottom of the kettle body is not uniform can be fundamentally solved, and therefore the water boiling time of the glass kettle is shortened, and the water boiling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating equipment technical field, specifically, relate to a kettle body structure and liquid heating equipment. BACKGROUND

[0002] At present, the existing health pot mainly adopts metal heating bottom and silica gel combined sealing on the glass kettle body, but in the use process, the gap is difficult to clean, and there is a problem of edible safety hidden trouble after the silica gel is heated. In the related art, in order to solve the above problems, the full glass kettle with glass cup body and glass cup bottom produced integrally is used, and the bottom thickness is uneven due to the processing technology when the glass kettle is blown or produced, the uneven degree of heat transfer is large, when high-power heating, the bottom is prone to rupture. SUMMARY

[0003] The utility model aims at least solve the technical problem that the whole kettle body heat transfer is uneven due to bottom heating in the health pot heating process in prior art or related art.

[0004] Therefore, the embodiment of the utility model provides a kettle body structure.

[0005] The embodiment of the utility model provides a liquid heating equipment.

[0006] In order to realize the above purpose, the embodiment of the utility model provides a kettle body structure, which comprises: a kettle body structure, the opposite sides of the kettle body structure are respectively provided with a water filling port and an assembly port;A heat conduction sheet is welded to the assembly port;Wherein, the kettle body structure is made of a first glass material, and the heat conduction sheet is made of a second glass material, and the maximum thickness difference of the heat conduction sheet is less than the maximum thickness difference of the kettle body structure.

[0007] According to the kettle body structure provided by the utility model, the kettle body structure and the heat conduction sheet are both made of glass material, specifically, the kettle body structure is made of a first glass material, and the kettle body structure is mainly used for containing liquid, two opposite water filling ports and assembly ports are arranged on the kettle body structure, the water filling port is used for injecting liquid into the kettle, and the assembly port is used for connecting the heat conduction sheet and is located at the bottom of the kettle or near the bottom, so as to facilitate heating.

[0008] It should be emphasized that the heat conduction sheet is also made of glass material, specifically, the second glass material, and the integrated forming process is not used in the scheme, but the kettle body structure and the heat conduction sheet are manufactured respectively, the heat conduction sheet is connected with the assembly port of the kettle body structure through welding, to ensure the close combination between them, on the one hand, to reduce the possibility of water leakage, on the other hand, to reduce the heat conduction loss, it can be understood that the thermal expansion coefficients of the two kinds of glass materials need to be considered during welding, to avoid cracks in the welding process.

[0009] It should be added that the thickness uniformity of the kettle body structure is lower than that of the heat-conducting sheet. Under the action of the heat-conducting sheet, it is in direct contact with the heating source. As the main heat transfer component of the kettle bottom, by making the maximum thickness difference of the heat-conducting sheet smaller than the maximum thickness difference of the kettle body structure, the thickness of the heat-conducting sheet is made more uniform, thereby improving heat transfer efficiency and reducing thermal stress.

[0010] Understandably, this solution optimizes the heat resistance and thermal conductivity of the kettle body structure by selecting different glass materials. While achieving efficient heat transfer, it maintains good mechanical strength and thermal stability, making it suitable for use under high-power heating conditions. By welding the heat-conducting plates to the kettle body structure, the problem of uneven heat transfer at the bottom of the kettle can be fundamentally solved, thereby shortening the boiling time of the glass kettle and improving the efficiency of boiling water.

[0011] The heat-conducting sheet can be made using the float glass process, and the body of the kettle can be made using the blown glass process.

[0012] In some technical solutions, optionally, the first glass material is different from the second glass material, and the difference between the thermal expansion coefficient of the heat-conducting sheet and the thermal expansion coefficient of the kettle body structure is no greater than 5 × 10⁻⁶. -7 / ℃.

[0013] In this technical solution, when selecting two glass materials, the difference in the coefficient of thermal expansion between the heat-conducting sheet and the kettle body needs to be less than or equal to 5 × 10⁻⁶. -7 / ℃, when the temperature changes, the expansion and contraction of the two glass materials are similar, which reduces stress concentration caused by inconsistent thermal expansion, reduces the risk of cracking at the weld and the overall structure, and improves the durability and safety of the kettle body.

[0014] Understandably, because the thermal expansion coefficients of the two glass materials are very similar, the thermal stress during the welding process is small, ensuring the strength and durability of the connection.

[0015] In some technical solutions, the heat-conducting sheet is optionally flat, and the outer edge of the heat-conducting sheet is connected to the inner edge of the assembly port by welding.

[0016] In this technical solution, limiting the heat-conducting plate to a flat shape helps to distribute heat evenly and improve heat transfer efficiency. It can be understood that the flat plate design provides a large, flat surface, resulting in a larger contact area with the heat source, thereby improving heat transfer efficiency.

[0017] Specifically, the outer edge of the heat-conducting plate and the inner edge of the assembly port are connected by welding, ensuring a firm connection between the heat-conducting plate and the body structure. Hydrogen-oxygen welding can be used to provide a high-temperature and precise welding environment, which can effectively reduce the concentration of thermal stress at the weld and reduce the risk of cracking.

[0018] In some technical solutions, optionally, the difference between the maximum thickness and the minimum thickness of the heat-conducting sheet is no greater than 0.1 mm.

[0019] In this technical solution, by limiting the thickness tolerance of the heat-conducting sheet to ±0.05mm, that is, the difference between the maximum thickness and the minimum thickness of the heat-conducting sheet is no more than 0.1mm, the surface flatness and uniformity of the heat-conducting sheet can be ensured, which helps to distribute heat evenly, reduce local overheating, reduce thermal stress concentration, and reduce the risk of cracking caused by excessive local stress.

[0020] In some technical solutions, optionally, at least a portion of the heat-conducting sheet protrudes from the assembly opening, and the heat-conducting sheet protruding from the assembly opening is used to contact the heating area.

[0021] In this technical solution, by limiting some or all of the heat-conducting plates to protrude from the assembly opening, the contact area with the heating area is increased. The heat-conducting plates protruding from the assembly opening can make more full contact with the heating area, increasing the path and surface of heat conduction. This helps to transfer heat from the heating area to the heat-conducting plates and then to the liquid in the pot more quickly, improving the heating efficiency and speed.

[0022] Because of the close contact between the protruding part and the heating area, heat can be distributed more evenly on the heat-conducting plate, reducing local overheating or uneven heating.

[0023] In some technical solutions, the heat-conducting sheet may optionally include: a flat plate portion and a connecting portion sleeved outside the flat plate portion; wherein the connecting portion is welded to the assembly port.

[0024] In this technical solution, the heat-conducting sheet structure includes a flat plate portion and a connecting portion. The flat plate portion is located inside the heat-conducting sheet and mainly performs the function of heat transfer, transferring heat from the heating area to the liquid inside the pot. The connecting portion is sleeved on the outside of the flat plate portion and welded to the assembly port, serving to fix and connect the heat-conducting sheet to the pot body structure.

[0025] The flat plate increases the contact area with the heating zone, facilitating rapid heat absorption and transfer, and improving overall heat transfer efficiency. This combination of the flat plate and the connecting part allows the heat-conducting plate to better connect with the kettle body structure while meeting heat transfer requirements, achieving optimization of both function and structure.

[0026] In some technical solutions, the thickness of the heat-conducting sheet can optionally be 1mm to 2mm.

[0027] In this technical solution, by limiting the thickness of the heat-conducting sheet to between 1mm and 2mm, the heat-conducting sheet has a higher flatness. Within this thickness range, the thermal conductivity and structural strength of the heat-conducting sheet can be balanced to a certain extent, thus taking into account both heating and strength requirements.

[0028] In some technical solutions, optionally, the temperature difference between the outer surface temperature and the inner surface temperature of the heat-conducting sheet is positively correlated with the heating power, the temperature difference is positively correlated with the contact area between the heat-conducting sheet and the heating area, the temperature difference is negatively correlated with the thickness of the heat-conducting sheet, and the temperature difference is negatively correlated with the thermal conductivity of the second glass material.

[0029] In this technical solution, due to the high flatness of the heat-conducting sheet and its structural feature of being in direct contact with the heating source, when the water in the kettle boils, the inner surface temperature of the glass at the bottom of the kettle remains relatively stable at 105℃ due to the presence of water. The temperature difference between the outer and inner surfaces of the heat-conducting sheet, i.e., the internal-external temperature difference, is related to the heating power, contact area, thickness of the heat-conducting sheet, and thermal conductivity of the second glass material. Therefore, by limiting the internal-external temperature difference, the maximum outer surface temperature that the heat-conducting sheet can withstand can be determined. Specifically, the internal-external temperature difference is positively correlated with the heating power and the contact area of ​​the heating region, and negatively correlated with the thickness of the heat-conducting sheet and the thermal conductivity of the second glass material.

[0030] Ultimately, by leveraging specific relationships, parameters such as heating power, heat-conducting sheet thickness, and contact area can be flexibly adjusted to determine parameters that better meet the needs of different users.

[0031] An embodiment of the second aspect of this application provides a liquid heating device, including: a heating base, the heating base including a heating area; and any of the above-described kettle body structures, which are correspondingly arranged with respect to the heating area.

[0032] The liquid heating device provided in this application includes a heating base and a kettle body structure. The heating area of ​​the heating base can generate heat to provide heating energy for the liquid in the kettle body.

[0033] Since the liquid heating device includes any of the above-mentioned kettle body structures, it has the beneficial effects of any of the above-mentioned kettle body structures, which will not be elaborated here.

[0034] Liquid heating equipment includes, but is not limited to, water storage devices with heating functions such as health pots and constant temperature pots.

[0035] In some technical solutions, optionally, when the kettle body structure is located within the heating area, the heat-conducting sheet is in contact with the heating area, and the projection of the heating area on the plane where the heat-conducting sheet is located covers the heat-conducting sheet.

[0036] In this technical solution, by limiting the placement of the kettle body structure within the heating area of ​​the heating base, the heat-conducting fins can be made into full contact with the heating area, maximizing the efficiency of heat transfer from the heating area to the heat-conducting fins. Furthermore, by limiting the projection of the heating area onto the plane of the heat-conducting fins to cover them, the heat-conducting fins can receive heat from the heating area as a whole, avoiding uneven heating in certain areas.

[0037] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0038] Figure 1 A schematic diagram of the structure of a kettle body according to an embodiment of the present invention is shown;

[0039] Figure 2 A schematic diagram of the structure of a kettle body according to an embodiment of the present invention is shown;

[0040] Figure 3 A schematic diagram of the structure of a heat-conducting sheet according to an embodiment of the present invention is shown;

[0041] Figure 4 A schematic diagram of a liquid heating device according to an embodiment of the present invention is shown.

[0042] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 100: Kettle body structure; 102: Kettle body structure; 1022: Water inlet; 1024: Assembly port; 104: Heat-conducting plate; 1042: Flat plate; 1044: Connecting part;

[0044] 200: Liquid heating equipment; 202: Heating base; 2022: Heating area. Detailed Implementation

[0045] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0046] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0047] The following reference Figures 1 to 4 Some embodiments according to the present invention are described.

[0048] like Figure 1 and Figure 2 As shown, this embodiment provides a kettle body structure 100, including a kettle body structure 102 made of glass and a heat-conducting plate 104. Specifically, the kettle body structure 102 is made of a first glass material and is mainly used to hold liquid. The kettle body structure 102 is provided with two oppositely arranged water inlets 1022 and an assembly port 1024. The water inlets 1022 are used to inject liquid into the kettle and are usually located at the top of the kettle. The assembly port 1024 is used to connect the heat-conducting plate 104 and is located at or near the bottom of the kettle to facilitate heating.

[0049] It should be emphasized that the heat-conducting sheet 104 is also made of glass, specifically a second type of glass. In this solution, it is not manufactured directly using a one-piece molding process. Instead, the kettle body structure 102 and the heat-conducting sheet 104 are processed and manufactured separately. The heat-conducting sheet 104 is connected to the assembly port 1024 of the kettle body structure 102 by welding to ensure a tight fit between the two. This reduces the possibility of water leakage and minimizes heat conduction loss. It is understandable that the thermal expansion coefficients of the two glass materials need to be considered during welding to avoid cracks during the welding process.

[0050] The heat-conducting sheet 104 can be made using the float glass process, and the body structure 102 can be made using the blown glass process.

[0051] It should be added that the thickness uniformity of the kettle body structure 102 is lower than that of the heat-conducting plate 104. Under the action of the heat-conducting plate 104, it is in direct contact with the heating source. As the main heat transfer component of the kettle bottom, by making the maximum thickness difference of the heat-conducting plate 104 smaller than the maximum thickness difference of the kettle body structure 102, the thickness of the heat-conducting plate 104 is made more uniform, thereby improving the heat transfer efficiency and reducing thermal stress.

[0052] Understandably, this solution optimizes the heat resistance and thermal conductivity of the kettle body structure 100 by selecting different glass materials, maintaining good mechanical strength and thermal stability while achieving efficient heat transfer, making it suitable for use under high-power heating conditions.

[0053] In some embodiments, the material of the kettle body structure 102 may be different from that of the heat-conducting sheet 104, thereby balancing the strength and heat resistance of the kettle body structure 100. For example, the first glass material is high borosilicate glass, which has good heat resistance and thermal shock resistance. The second glass material can be selected from glass with higher thermal conductivity to improve heat transfer efficiency.

[0054] It is important to emphasize that when choosing two glass materials, the difference in the coefficients of thermal expansion between the heat-conducting plate 104 and the kettle body structure 102 must be less than or equal to 5 × 10⁻⁶. -7 / ℃, when the temperature changes, the expansion and contraction of the two glass materials are similar, which reduces stress concentration caused by inconsistent thermal expansion, reduces the risk of cracking at the weld and the overall structure, and improves the durability and safety of the kettle body.

[0055] Understandably, because the thermal expansion coefficients of the two glass materials are very similar, the thermal stress during the welding process is small, ensuring the strength and durability of the connection.

[0056] By selecting different glass materials and strictly controlling the difference in their coefficients of thermal expansion, the high thermal conductivity and uniform thickness of the heat-conducting sheet 104 are used to improve the heat transfer efficiency. The matching of the coefficients of thermal expansion reduces thermal stress and lowers the risk of breakage.

[0057] In some embodiments, the heat-conducting plate 104 may optionally be flat, which helps to distribute heat evenly and improve heat transfer efficiency. It is understood that the flat design provides a large, flat surface with a larger contact area with the heat source, thereby improving heat transfer efficiency.

[0058] Specifically, the outer edge of the heat-conducting plate 104 and the inner edge of the assembly port 1024 are connected by welding, which can be done by hydrogen-oxygen welding. By providing a high-temperature and precise welding environment, on the one hand, the heat-conducting plate 104 and the body structure 102 are firmly connected, and on the other hand, hydrogen-oxygen welding can effectively reduce the concentration of thermal stress at the weld and reduce the risk of cracking.

[0059] In some embodiments, the thickness tolerance of the heat-conducting sheet 104 is optionally limited to ±0.05 mm, that is, the difference between the maximum thickness and the minimum thickness of the heat-conducting sheet 104 is not greater than 0.1 mm. This ensures the surface flatness and uniformity of the heat-conducting sheet 104, thereby helping to distribute heat evenly, reduce local overheating, reduce thermal stress concentration, and reduce the risk of cracking due to excessive local stress.

[0060] In some embodiments, optionally, some or all of the heat-conducting plates 104 protrude from the mounting opening 1024 to increase the contact area with the heating area 2022. The heat-conducting plates 104 protruding from the mounting opening 1024 can make more full contact with the heating area 2022, increasing the path and surface area for heat conduction. This helps to transfer heat from the heating area 2022 to the heat-conducting plates 104 more quickly, and then to the liquid in the pot, improving the heating efficiency and speed.

[0061] Because of the close contact between the protruding part and the heating area 2022, the heat can be distributed more evenly on the heat-conducting plate 104, reducing local overheating or uneven heating.

[0062] In summary, by designing at least a portion of the heat-conducting fins 104 to protrude from the mounting opening 1024, the kettle body structure 100 can more effectively transfer heat during the heating process, improving heating efficiency and uniformity. It also enhances adaptability to different heating devices, providing users with a better experience. This design improves product performance while also helping to save energy and increase ease of use.

[0063] In some embodiments, optionally, such as Figure 3 As shown, the structure of the heat-conducting plate 104 includes a flat plate portion 1042 and a connecting portion 1044. The flat plate portion 1042 is located inside the heat-conducting plate 104 and mainly performs the function of heat transfer, transferring heat from the heating area 2022 to the liquid inside the pot. The connecting portion 1044 is sleeved on the outside of the flat plate portion 1042 and is welded to the assembly port 1024, serving to fix and connect the heat-conducting plate 104 to the pot body structure 102.

[0064] The flat plate portion 1042 increases the contact area with the heating area 2022, which is beneficial for rapid heat absorption and transfer, and improves the overall heat transfer efficiency. This combination structure of the flat plate portion 1042 and the connecting portion 1044 allows the heat-conducting plate 104 to better connect with the kettle body structure 102 while meeting the heat transfer requirements, thus optimizing both function and structure.

[0065] The connecting part 1044 and the flat part 1042 can both be flat. The connecting part 1044 can also protrude from the flat part 1042 so that a structure adapted to the assembly port 1024 is provided on the connecting part 1044, thereby facilitating welding.

[0066] In some embodiments, the thickness of the heat-conducting sheet 104 is optionally between 1 mm and 2 mm. Since the heat-conducting sheet 104 has higher flatness, within this thickness range, the thermal conductivity and structural strength of the heat-conducting sheet 104 can be balanced to a certain extent, that is, both heating requirements and strength requirements are taken into account.

[0067] In some embodiments, optionally, the heat-conducting sheet 104 itself has high flatness, and as a structural feature that is in direct contact with the heating source, when the water in the kettle boils, due to the presence of water, the inner surface temperature T1 of the glass at the bottom of the kettle remains basically stable at 105°C. The difference between the outer surface temperature and the inner surface temperature of the heat-conducting sheet 104, i.e., the internal and external temperature difference, is related to the heating power, the contact area, the thickness of the heat-conducting sheet 104, and the thermal conductivity of the second glass material. Therefore, by limiting the internal and external temperature difference, the maximum outer surface temperature that the heat-conducting sheet 104 can withstand can be determined. Specifically, the internal and external temperature difference is positively correlated with the heating power and the contact area of ​​the heating region 2022, and negatively correlated with the thickness of the heat-conducting sheet 104 and the thermal conductivity of the second glass material.

[0068] It is understandable that, based on the specific correlation between the internal and external temperature difference and the four factors, a comprehensive consideration is needed when dealing with different thicknesses, contact areas, and heating powers. For example, glass kettles are usually made of high borosilicate glass, whose thermal shock resistance temperature is around 150℃. That is, when the value of T2-T1 ΔT, i.e., the internal and external temperature difference, is greater than 150℃, the glass is at risk of cracking during use. Therefore, to increase the heating power W while ensuring that ΔT < 150℃, this can be achieved by increasing the heat transfer area S and reducing the bottom thickness, i.e., the thickness (H) of the heat-conducting sheet 104. The shape of the glass greatly limits the effective heat transfer area at the bottom, so the effective heat transfer area, i.e., the contact area between the heat-conducting sheet 104 and the heating area 2022, has limited variation. In contrast, reducing the bottom thickness H makes it easier to control the ΔT value of the bottom glass panel.

[0069] Ultimately, by using specific correlations, the parameters of heating power, the thickness of the heat-conducting sheet 104, and the contact area can be flexibly adjusted to determine parameters that better meet the needs of different users.

[0070] like Figure 4 As shown, an embodiment of the second aspect of this application provides a liquid heating device 200, including a heating base 202 and a kettle body structure 100. The heating area 2022 of the heating base 202 is capable of generating heat to provide heating energy for the liquid in the kettle body.

[0071] Since the liquid heating device 200 includes any of the above-mentioned pot body structures 100, it has the beneficial effects of any of the above-mentioned pot body structures 100, which will not be described in detail here.

[0072] Among them, the liquid heating equipment 200 includes, but is not limited to, water storage equipment with heating function such as health pots and constant temperature pots.

[0073] In some embodiments, optionally, when the kettle body structure 100 is placed in the heating area 2022 of the heating base 202, the heat-conducting plate 104 can be in full contact with the heating area 2022, maximizing the efficiency of heat transfer from the heating area 2022 to the heat-conducting plate 104. Furthermore, by limiting the projection of the heating area 2022 onto the plane of the heat-conducting plate 104 to cover it, the heat-conducting plate 104 can uniformly receive heat from the heating area 2022, avoiding uneven local heating.

[0074] This solution primarily provides an all-glass kettle. In related technologies, the entire body of a high borosilicate all-glass kettle, including the body and bottom, is made of glass, effectively avoiding the drawbacks of kettles with metal bottoms. However, all-glass kettles have their limitations. The thermal resistance of glass kettles is dozens of times that of stainless steel, resulting in a significant reduction in the average boiling power and a substantial increase in boiling time. Furthermore, during the blown or tubular manufacturing process, the thickness of the glass bottom is uneven, ranging from 2mm to 4mm, leading to uneven heat transfer. When heated to high power, the temperature difference experienced by the glass bottom increases, and if it exceeds 150℃, the bottom of the glass may crack. To improve the boiling efficiency and reduce boiling time of all-glass kettles, manufacturers have further processed the blown or piped all-glass kettles by grinding the bottom. This flattens the bottom, reducing the thickness of the glass and increasing its flatness to increase the contact area. However, flattening the bottom only reduces thickness and does not fundamentally eliminate uneven thickness at the bottom. The thickness of the ground glass bottom is unevenly distributed between 1.4mm and 3.5mm, failing to address the problem of uneven heat transfer at the bottom of the kettle. Therefore, the risk of breakage during high-power heating remains. Furthermore, mechanical grinding can cause mechanical stress and hidden cracks, increasing the risk of breakage. Therefore, the bottom-grinding solution for glass kettles only optimizes boiling time and does not fundamentally solve the problem.

[0075] Unlike blown or tubular processes for making all-glass kettles, this solution uses welding to manufacture all-glass kettles, fundamentally solving the aforementioned problems, thereby shortening the boiling time of glass kettles and improving water boiling efficiency.

[0076] In this design, the glass body (i.e., the body structure) is manufactured using a blown glass process, while the welded glass sheet (i.e., the heat-conducting sheet) at the bottom of the glass is made using a float glass process. The float glass sheet used for the bottom has high flatness, consistent thickness with a deviation of ±0.05mm, and adjustable thickness. To ensure the strength of the bottom of the glass, the thickness of the bottom glass sheet is no less than 1mm. The bottom glass sheet is welded to the glass body using an oxyhydrogen welding method. To prevent cracking during welding, the difference in thermal expansion coefficients between the body glass and the bottom glass should not be too large; the difference Δα should not exceed 5 × 10⁻⁶. -7 / ℃, and after welding, the thermal stress left by welding is removed by annealing.

[0077] The maximum power at which an all-glass kettle can be used depends primarily on four factors: heating power (W), effective heat transfer area (S), glass bottom thickness (H), and glass thermal conductivity (K). Experiments have shown that when water boils in the kettle, the inner surface temperature (T1) of the glass bottom remains relatively stable at 105℃ due to the presence of water. The outer surface temperature (T2) depends on the aforementioned four factors. Based on extensive testing data, the following formula has been derived for rapid matching:

[0078] T2=(W×S) / (H×K)+T1, where K is the thermal conductivity of the glass itself, which is a constant; the heating power W is in watts; the effective heat transfer area S is in m2; the bottom thickness H is in m; and the thermal conductivity K is in watts / (m×K).

[0079] Considering the shock resistance and cost factors of glass, glass kettles are usually made of high borosilicate glass, which has a thermal shock resistance temperature of around 150℃. This means that when the value of T2-T1 (ΔT) > 150℃, the glass is at risk of cracking during use. Therefore, to increase the heating power W while ensuring ΔT < 150℃, this can be achieved by increasing the heat transfer area S and reducing the bottom thickness (H). However, the shape of the glass greatly limits the effective heat transfer area at the bottom, thus limiting the variation of the effective heat transfer area S. In contrast, reducing the bottom thickness H makes it easier to control the ΔT value of the bottom glass panel.

[0080] Existing glass water bottles have uneven bottom thickness. For bottles without a ground bottom, the bottom thickness is between 2mm and 4mm, while for bottles with a ground bottom, it is between 1.4mm and 3.5mm. When the bottom thickness is too large at a certain point, the temperature ΔT value of the inner and outer surfaces of the glass water bottle at that point can easily exceed 150℃, causing the glass water bottle to crack during normal use.

[0081] In this solution, an all-glass kettle is manufactured using an oxyhydrogen welding process. The bottom of the kettle is made of a float glass sheet of uniform thickness. Based on the actual power used, the operating temperature can be accurately calculated using the formula T2=(W×S) / (H×K)+T1, thereby effectively matching the thickness of the float glass and ensuring uniform thickness, thus avoiding potential risks caused by uneven thickness.

[0082] Extensive experiments were conducted using this method, and the specific data are shown in the table below:

[0083]

[0084] As can be clearly seen from the table, the heating power, bottom contact diameter, effective heat transfer area, cup bottom thickness, thermal conductivity, and temperature difference parameters corresponding to Comparative Examples 1, 2, 3, 4, and 5 all ultimately resulted in breakage, i.e., NG (Not Recommended) cup breakage when boiling water.

[0085] In summary, this solution uses welding to connect the heat-conducting plate to the kettle body structure, which can fundamentally solve the problem of uneven heat transfer at the bottom of the kettle, thereby shortening the boiling time of the glass kettle and improving the boiling efficiency.

[0086] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0087] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0088] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A kettle body structure, characterized in that, include: The kettle body structure has a water inlet and an assembly port on opposite sides; A heat-conducting sheet, wherein the heat-conducting sheet is welded to the assembly port; The kettle body structure is made of a first glass material, the heat-conducting sheet is made of a second glass material, and the maximum thickness difference corresponding to the heat-conducting sheet is less than the maximum thickness difference corresponding to the kettle body structure.

2. The kettle body structure according to claim 1, characterized in that, The first glass material is different from the second glass material; The difference between the thermal expansion coefficient of the heat-conducting sheet and the thermal expansion coefficient of the kettle body structure is no greater than 5 × 10⁻⁶. -7 / ℃.

3. The kettle body structure according to claim 2, characterized in that, The heat-conducting sheet is flat, and its outer edge is welded to the inner edge of the assembly port.

4. The pot body structure according to any one of claims 1 to 3, characterized in that, The difference between the maximum thickness and the minimum thickness of the heat-conducting sheet is no greater than 0.1 mm.

5. The pot body structure according to any one of claims 1 to 3, characterized in that, At least a portion of the heat-conducting sheet protrudes from the mounting opening, and the heat-conducting sheet protruding from the mounting opening is used to contact the heating area.

6. The pot body structure according to any one of claims 1 to 3, characterized in that, The heat-conducting sheet specifically includes: A flat plate portion and a connecting portion sleeved outside the flat plate portion; The connecting part is welded to the assembly port.

7. The pot body structure according to any one of claims 1 to 3, characterized in that, The thickness of the heat-conducting sheet is 1mm to 2mm.

8. The pot body structure according to any one of claims 1 to 3, characterized in that, The temperature difference between the outer surface temperature and the inner surface temperature of the heat-conducting sheet is positively correlated with the heating power. The temperature difference is positively correlated with the contact area between the heat-conducting sheet and the heating area. The temperature difference is negatively correlated with the thickness of the heat-conducting sheet. The temperature difference is also negatively correlated with the thermal conductivity of the second glass material.

9. A liquid heating device, characterized in that, include: A heating base, the heating base including a heating area; The kettle body structure as described in any one of claims 1 to 8 is provided corresponding to the heating area.

10. The liquid heating device according to claim 9, characterized in that, When the kettle body structure is located within the heating area, the heat-conducting sheet is in contact with the heating area, and the projection of the heating area onto the plane of the heat-conducting sheet covers the heat-conducting sheet.

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