Glass container and cooking appliance

Abstract

This invention provides a glass container and a cooking utensil. The glass container includes: a side wall; a bottom wall connected to the side wall, the bottom wall and the side wall enclosing an accommodating space; a heating layer disposed on the bottom wall; and a protrusion disposed at the connection between the side wall and the bottom wall. By providing the protrusion, the heat-melting temperature at the connection between the bottom wall and the side wall can be increased, enabling the connection to withstand higher thermal stress and reducing the probability of the bottom wall and the side wall cracking due to thermal stress.

Description

Technical Field

[0001] This invention relates to the field of cooking utensil technology, and more specifically, to a glass container and a cooking utensil. Background Technology

[0002] When water is boiled in a glass container, stress is created at the bottom of the container. If this stress is too high, the glass container may crack.

[0003] In existing technologies, to avoid cracking of glass containers, the usual practice is to reduce the heating power of the glass container. However, reducing the heating power of the glass container will undoubtedly increase the heating time and affect its water boiling efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, a first aspect of the present invention is to provide a glass container.

[0006] A second aspect of the invention is that a cooking utensil is provided.

[0007] In view of the above, according to a first aspect of the present invention, the present invention provides a glass container, wherein the glass container includes: a side wall; a bottom wall connected to the side wall, the bottom wall and the side wall enclosing an accommodating space; a heating layer disposed on the bottom wall; and a protrusion disposed at the connection position between the side wall and the bottom wall.

[0008] The technical solution of this application proposes a glass container, wherein the glass container includes a bottom wall and a side wall connected to the bottom, wherein the bottom wall and the side wall are connected to form an accommodating space to accommodate a heated liquid.

[0009] In addition, the glass container is equipped with a heating layer and a protrusion at the connection between the side wall and the bottom wall. The glass container uses the heating layer to heat the liquid being heated. Since the heating layer is located on the bottom wall, meaning it is in direct contact with the bottom wall but not the side wall, the bottom wall is more affected by the heating layer and receives more heat in the initial stage of heating, while the side wall receives less heat. This easily leads to heat accumulation at the connection between the bottom and side walls, resulting in high thermal stress. Under high thermal stress, the connection between the bottom and side walls is prone to cracking. By providing the protrusion, the melting temperature at the connection between the bottom and side walls can be increased, allowing the connection to withstand higher thermal stress and reducing the probability of cracking due to thermal stress.

[0010] Meanwhile, the protrusions increase the connection area between the bottom wall and the side wall, improve the speed at which heat is transferred from the bottom wall to the side wall, alleviate the heat concentration on the bottom wall, and reduce the probability of the bottom wall and side wall cracking due to thermal stress.

[0011] In addition to the aforementioned functions, the protrusion also enhances the physical strength at the connection between the bottom and side walls, reduces the likelihood of breakage due to impact, and improves the durability of the glass container.

[0012] In addition, the glass container in the above-described technical solution provided by the present invention may also have the following additional technical features:

[0013] In any of the above technical solutions, the sidewall and the bottom wall are connected by welding, forming a welding area at the connection position, and the protrusion is set in the welding area.

[0014] In this technical solution, it is considered that when the bottom wall and the side wall are welded together, the welded area will deform to form a welding zone. Since the bottom wall and the side wall are deformed, thermal resistance is more likely to form, reducing the efficiency of heat transfer from the bottom wall to the side wall, thus causing cracking.

[0015] By placing protrusions in the welding area, the weld area's resistance to thermal stress is improved, reducing the likelihood of cracking or separation under thermal stress. This enhances the strength of the bottom and side wall welds and improves the durability of the glass container.

[0016] In any of the above technical solutions, the sidewall and the bottom wall are connected by fusion welding.

[0017] In this technical solution, the sidewall and bottom wall are welded together by fusion welding. Compared with the connection method using silicone, this method improves the strength of the weld between the bottom wall and the sidewall and reduces the probability of the weld splitting and falling off.

[0018] In addition, the sidewalls and bottom walls are connected by fusion welding, which is a welding method in which the sidewalls and bottom walls soften or melt and combine together at the connection point. This process of softening or melting the sidewalls and bottom walls together promotes the formation of protrusions at the connection point.

[0019] It is specified that the sidewalls and bottom wall are connected by fusion welding, so that the protrusion is integrated with the bottom wall and sidewalls, which improves the connection strength between the bottom wall and sidewalls and improves the durability of the glass container.

[0020] In any of the above technical solutions, the protrusion is arranged around the bottom wall.

[0021] In this technical solution, the protrusion is arranged around the bottom wall. That is, the protrusion is not a partial arrangement, but a structure that is integrated with the bottom wall. Compared with the partial arrangement of the protrusion, the protrusion arranged around the bottom wall increases the heat fusion temperature at the connection point between the bottom wall and the side wall at any connection point. This allows the connection point to withstand higher thermal stress and reduces the probability of the bottom wall and side wall cracking due to thermal stress.

[0022] Meanwhile, the protrusions increase the connection area between the bottom wall and the side wall, improve the speed at which heat is transferred from the bottom wall to the side wall, alleviate the heat concentration on the bottom wall, and reduce the probability of the bottom wall and side wall cracking due to thermal stress.

[0023] In addition, the protrusions are arranged around the bottom wall, reducing the likelihood of the protrusions accumulating food residue.

[0024] At the same time, it also makes it easier for users to clean the glass containers.

[0025] In any of the above technical solutions, the distance between the end of the protrusion away from the side wall or bottom wall and the side wall and / or bottom wall is less than or equal to 2 mm.

[0026] In this technical solution, the distance between the heating layer and the sidewall or bottom wall is indirectly limited by limiting the distance between the end of the protrusion away from the sidewall or bottom wall and the sidewall and / or bottom wall to less than or equal to 2 mm.

[0027] By limiting the distance to less than or equal to 2 mm, the excessive distance between the heating layer and the side or bottom wall can be avoided, which would result in insufficient heating power of the glass container. At the same time, the size of the protrusion can be limited to prevent it from becoming too large and generating high internal stress between the protrusion and the bottom and / or side wall, thus improving the thermal stability of the glass container.

[0028] In any of the above technical solutions, the distance between the end of the protrusion away from the side wall or bottom wall and the side wall and / or bottom wall is less than or equal to 1 mm.

[0029] In this technical solution, by further limiting the range of values ​​for this distance, the glass container is ensured to have high heating power. At the same time, the size of the protrusion is avoided from being too large, which would cause high internal stress between the protrusion and the bottom wall and / or side wall, thus giving the glass container high thermal stability.

[0030] In any of the above technical solutions, the bottom wall has a first surface that is away from the side wall, and the protrusion protrudes from the first surface.

[0031] Typically, the bottom wall has a first surface facing away from the side wall that is used to contact the working surface on which the glass container is placed. By defining a protrusion that protrudes from the first surface, the protrusion can be used to support the bottom wall and side wall, reducing the chance of the first surface directly contacting the working surface, reducing the chance of the glass container breaking, and thus improving the service life of the glass container.

[0032] In any of the above technical solutions, the protrusion is at least partially located outside the accommodating space and protrudes away from the central axis of the bottom wall.

[0033] In this technical solution, by limiting the protrusion of the protrusion to protrude away from the central axis of the bottom wall, it is easy to reduce the overall height of the glass container and realize the miniaturization of the glass container.

[0034] In addition, the bottom wall will deform under the influence of the side walls and the gravity of the heated liquid in the container space. By limiting the protrusion of the protrusion away from the central axis of the bottom wall, the deformation of the bottom wall when the glass container is placed can be reduced, thus reducing the probability of the bottom wall breaking due to excessive deformation.

[0035] Furthermore, it can also reduce the impact of heat accumulation at the protrusion on the connection between the bottom wall and the side wall, such as promoting heat transfer to the edge of the bottom wall to reduce thermal stress at the connection point. At the same time, it can also promote heat transfer to the side wall to reduce the risk of cracking between the bottom wall and the side wall.

[0036] In any of the above technical solutions, the heating layer is located on one side of the accommodating space.

[0037] In this technical solution, existing glass containers are usually heated based on heat conduction. However, the heating power of the above-mentioned heating method is low. Therefore, the heating efficiency of the glass container is low during actual use.

[0038] Meanwhile, since the bottom wall of the glass container radiates a large amount of heat when heated, the energy efficiency of the above heating scheme will be further reduced.

[0039] The technical solution of this application defines the heating layer as being located on one side of the accommodating space, so that the heating layer can directly heat the liquid being heated. Compared with the heating method that uses glass as a transfer medium, the heating method of this application has a faster heating speed. At the same time, it also reduces the amount of heat lost by the heating layer through radiation outward from the bottom wall. Therefore, the glass container with the above design has high energy efficiency.

[0040] In addition, by limiting the heating layer to one side of the container space, the likelihood of wear and tear on the heating layer caused by external environmental factors can be reduced, thus improving the service life of the glass container.

[0041] In this technical solution, the relative permeability of the weak magnetic metal material is related to its conductivity and oxidation corrosion resistance. Specifically, the lower the relative permeability, the higher the conductivity and the stronger the oxidation corrosion resistance. By limiting the relative permeability of the weak magnetic metal material to a range of 0 to 10, i.e., in a relatively low range, the conductivity and oxidation corrosion resistance of the weak magnetic metal material are improved. This ensures that after the weak magnetic metal material is used in a slurry, coated onto a substrate, and sintered and cured, the heating layer can still generate eddy currents and has strong heating performance, thus ensuring the heating effect of the glass container.

[0042] In any of the above technical solutions, the heating layer includes a weak magnetic metal material, wherein the relative magnetic permeability of the weak magnetic metal material is less than 1.

[0043] In this technical solution, the relative permeability range of the weak magnetic metal material is further limited to 0 to 1. Under the premise of improving the conductivity and oxidation corrosion resistance of the weak magnetic metal material, it is ensured that after the weak magnetic metal material is used in the slurry and coated on the substrate and then sintered and cured, the heating layer can still generate eddy currents and has strong heating performance, thus ensuring the heating effect of the glass container.

[0044] Furthermore, since the protrusion is at least partially located outside the accommodating space and protrudes away from the central axis of the bottom wall, the distance between the heating layer and its corresponding electromagnetic heating device can be reduced, thereby improving the electromagnetic induction efficiency.

[0045] In any of the above technical solutions, the heating layer further includes: inorganic matter, wherein the content of weak magnetic metal material in the heating layer is between 60% and 90%, and the content of inorganic matter is between 10% and 40%.

[0046] In any of the above technical solutions, the inorganic material includes one or more of aluminum oxide, silicon oxide, boron oxide, bismuth oxide, and calcium oxide.

[0047] In any of the above technical solutions, the inductive resistance of the heating layer is between 2 ohms and 3 ohms; and / or the inductance of the heating layer is between 75 μH and 90 μH.

[0048] Typically, a glass container is used in conjunction with a coil. By limiting the range of values ​​for the sensing resistance and inductance, the heating power of the glass container is ensured, while also extending the lifespan of the switching devices in the coil used with the product.

[0049] In any of the above technical solutions, the edge of the heating layer and the edge of the protrusion have a first distance.

[0050] In this technical solution, by defining a first distance between the edge of the heating layer and the edge of the protrusion, the heat is directly transferred to the bottom wall when the heating layer generates heat, and is not directly transferred to the protrusion, thus promoting the transfer of heat to the bottom wall and side wall.

[0051] Since the heat generated by the heating layer does not directly transfer heat to the protrusion, it reduces the localized heat concentration on the bottom wall, thereby lowering the likelihood of the glass container breaking due to localized heat concentration and improving its durability.

[0052] In any of the above technical solutions, a protective layer is further included, which is disposed on the outer surface of the heating layer for sealing the heating layer; wherein the protrusion and the edge of the protective layer have a second distance.

[0053] In this technical solution, since the heating layer is located within the container space, it can directly contact the object being heated. Therefore, during use, residue from the object will remain on the heating layer. Taking boiling water as an example, scale will remain on the heating layer. As the glass container is used for longer, the scale will thicken and affect the heating efficiency of the glass container. Cleaning it can easily damage the heating layer. In addition, the heating layer may also release some harmful substances into the object being heated, affecting the food safety of the heated object.

[0054] The technical solution of this application has a protective layer sealed on the outer surface of the heating layer. Due to the presence of this protective layer, damage to the heating layer can be reduced when cleaning scale. At the same time, the properties of the protective layer itself can be used to reduce the adhesion of scale, so as to achieve the glass container without cleaning.

[0055] In addition, the presence of the protective layer reduces the amount of harmful substances released from the heating layer into the heated object, thus ensuring the food safety of the heated object.

[0056] Since the protective layer is used to protect the heating layer, it needs to cover the outer surface of the heating layer. Therefore, by limiting the second distance between the protrusion and the edge of the protective layer, a distance is ensured between the heating layer and the protrusion to avoid the distance between the heating layer and the side wall or bottom wall being too large, which would result in insufficient heating power of the glass container. At the same time, the size of the protrusion can also be limited to avoid its volume being too large, which would cause high internal stress between the protrusion and the bottom wall and / or side wall. Therefore, the thermal stability of the glass container is improved.

[0057] In one embodiment, the protective layer is selected as one or a combination of polytetrafluoroethylene (PTFE) coating, ceramic coating, or silicone resin coating. PTFE, ceramic, and silicone resin are all food-grade coatings with high stability; that is, PTFE, ceramic, and silicone resin coatings exhibit strong stability at high temperatures and will not disperse into the material to be heated in the glass container, thus preventing contamination of the material during heating and cooking within the container and improving the stability of the glass container. By using PTFE, ceramic, or silicone resin coating as the protective layer, not only is contact between the magnetic layer and the material within the container prevented, but also any reaction that may occur after the protective layer comes into contact with the material, thereby improving the user experience.

[0058] In any of the above technical solutions, the protrusion is made of glass.

[0059] In this technical solution, by limiting the protrusion to be made of glass material, the thermal resistance when transferring heat in the protrusion can be reduced, the probability of the bottom wall and side wall breaking due to the influence of the protrusion can be reduced, and the durability of the glass container can be ensured.

[0060] In any of the above technical solutions, the bottom wall is a glass bottom wall.

[0061] In this technical solution, the bottom wall is a glass bottom wall. When transferring heat, the glass material has the characteristic of low thermal resistance. Therefore, by limiting the bottom wall to a glass bottom wall, the heat transfer efficiency of the bottom wall is improved, and the heating efficiency of the glass container is improved.

[0062] In any of the above technical solutions, the sidewall is a glass sidewall. When transferring heat, the glass material has the characteristic of low thermal resistance. Therefore, by limiting the sidewall to a glass sidewall, the heat transfer efficiency of the sidewall is improved, and the heating efficiency of the glass container is improved.

[0063] In any of the above technical solutions, the bottom wall and side wall of the glass are made of borosilicate glass.

[0064] According to a second aspect of the present invention, a cooking appliance is provided, comprising: a glass container as described in any of the above; and an electromagnetic heating device for providing heat to the glass container.

[0065] This invention provides a cooking appliance comprising a glass container and an electromagnetic heating device. The glass container is selected from any of the possible designs described in the first aspect above. The electromagnetic heating device, when energized, provides energy to the glass container, thereby heating the material inside the glass container. Since the cooking appliance has any of the glass containers described above, it possesses all the beneficial technical effects of any of the aforementioned glass containers.

[0066] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0067] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0068] Figure 1 A schematic diagram of the structure of the glass container in an embodiment of the present invention is shown;

[0069] Figure 2 A schematic diagram of the structure of the glass container in an embodiment of the present invention is shown;

[0070] Figure 3 A schematic diagram of the structure of the glass container in an embodiment of the present invention is shown;

[0071] Figure 4 A schematic diagram of the structure of the glass container in an embodiment of the present invention is shown;

[0072] Figure 5 A schematic block diagram of a cooking appliance according to an embodiment of the present invention is shown.

[0073] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0074] 100 Glass container, 102 Side wall, 104 Bottom wall, 106 Protrusion, 108 Heating layer, 110 Protective layer, 200 Cooking appliance, 210 Electromagnetic heating device. Detailed Implementation

[0075] To better understand the above aspects, features, and advantages of the present invention, the present invention 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.

[0076] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0077] Example 1

[0078] In one embodiment, such as Figure 1 and Figure 2As shown, a glass container 100 is provided, wherein the glass container 100 includes: a side wall 102; a bottom wall 104 connected to the side wall 102, the bottom wall 104 and the side wall 102 enclosing an accommodating space; a heating layer 108 disposed on the bottom wall 104; and a protrusion 106 disposed at the connection position between the side wall 102 and the bottom wall 104.

[0079] The technical solution of this application proposes a glass container 100, wherein the glass container 100 includes a bottom wall 104 and a side wall 102 connected to the bottom, wherein the bottom wall 104 and the side wall 102 are connected to form an accommodating space to accommodate heated liquid.

[0080] In addition, the glass container 100 is also provided with a heating layer 108 and a protrusion 106 at the connection between the side wall 102 and the bottom wall 104. The glass container 100 uses the heating layer 108 to heat the liquid being heated. Since the heating layer 108 is located on the bottom wall 104, meaning it is in direct contact with the bottom wall 104 and not with the side wall 102, the bottom wall 104 is significantly affected by the heating layer 108 during the initial heating phase of the glass container 100, resulting in a greater heat transfer. The heat is relatively high on the bottom wall 104 and lower on the side wall 102, which easily leads to heat accumulation at the connection between the bottom wall 104 and the side wall 102, resulting in high thermal stress. Under the action of high thermal stress, the connection between the bottom wall 104 and the side wall 102 is prone to cracking. By providing the protrusion 106, the heat melting temperature at the connection between the bottom wall 104 and the side wall 102 can be increased, so that the connection can withstand higher thermal stress and reduce the probability of the bottom wall 104 and the side wall 102 cracking due to thermal stress.

[0081] Meanwhile, the protrusion 106 strengthens the connection area at the junction of the bottom wall 104 and the side wall 102, increases the speed at which heat is transferred from the bottom wall 104 to the side wall 102, alleviates the concentration of heat on the bottom wall 104, and reduces the probability of the bottom wall 104 and the side wall 102 cracking due to thermal stress.

[0082] In addition to the aforementioned functions, the protrusion 106 also improves the physical strength at the connection between the bottom wall 104 and the side wall 102, reduces the probability of breakage due to impact at the connection, and improves the durability of the glass container 100.

[0083] Example 2

[0084] In one possible embodiment, the sidewall 102 and the bottom wall 104 are connected by welding, forming a welding area at the connection location, and the protrusion 106 is provided in the welding area.

[0085] In this technical solution, when the bottom wall 104 and the side wall 102 are welded together, the welded area will deform to form a welding area. Since the bottom wall 104 and the side wall 102 are deformed, thermal resistance is more likely to be formed, reducing the efficiency of heat transfer from the bottom wall 104 to the side wall 102, thus causing cracking.

[0086] By providing the protrusion 106 in the welding area, the weld area is made more resistant to thermal stress, reducing the likelihood of cracking or separation under thermal stress. This improves the weld strength between the bottom wall 104 and the side wall 102, and enhances the durability of the glass container 100.

[0087] In any of the above technical solutions, the side wall 102 and the bottom wall 104 are connected by fusion welding.

[0088] In this technical solution, the side wall 102 and the bottom wall 104 are welded together by fusion welding. Compared with the connection method using silicone, this improves the strength of the weld between the bottom wall 104 and the side wall 102 and reduces the probability of the weld between the bottom wall 104 and the side wall 102 splitting and falling off.

[0089] Furthermore, the sidewall 102 and the bottom wall 104 are connected by fusion welding, that is, the welding method in which the connection position of the sidewall 102 and the bottom wall 104 softens or melts and combines together. During the process of the connection position of the sidewall 102 and the bottom wall 104 softening or melting and flowing together, the protrusion 106 is formed at the connection position.

[0090] It is specified that the side wall 102 and the bottom wall 104 are connected by fusion welding, so that the protrusion 106 is integrated with the bottom wall 104 and the side wall 102, which improves the connection strength between the bottom wall 104 and the side wall 102 and improves the durability of the glass container 100.

[0091] Example 3

[0092] In one possible embodiment, such as Figure 3 As shown, the protrusion 106 is arranged around the bottom wall 104.

[0093] In this technical solution, the protrusion 106 is arranged around the bottom wall 104. That is, the protrusion 106 is not a partial arrangement, but a structure that surrounds it. Compared with the partial arrangement of the protrusion 106, the protrusion 106 arranged around the bottom wall 104 increases the heat fusion temperature at the connection position between the bottom wall 104 and the side wall 102 at any connection position, so that the connection position can withstand higher thermal stress and reduce the probability of the bottom wall 104 and the side wall 102 cracking due to thermal stress.

[0094] Meanwhile, the protrusion 106 strengthens the connection area at the junction of the bottom wall 104 and the side wall 102, increases the speed at which heat is transferred from the bottom wall 104 to the side wall 102, alleviates the concentration of heat on the bottom wall 104, and reduces the probability of the bottom wall 104 and the side wall 102 cracking due to thermal stress.

[0095] In addition, the protrusion 106 is arranged around the bottom wall 104, which reduces the likelihood of the protrusion 106 accumulating food residue, and at the same time makes it easier for users to clean the glass container 100.

[0096] Example 4

[0097] In one possible embodiment, the distance between the end of the protrusion 106 away from the sidewall 102 or the bottom wall 104 and the sidewall 102 and / or the bottom wall 104 is less than or equal to 2 mm.

[0098] In this technical solution, by limiting the distance between the end of the protrusion 106 away from the side wall 102 or the bottom wall 104 and the side wall 102 and / or the bottom wall 104 to be less than or equal to 2 mm, the distance between the heating layer 108 and the side wall 102 or the bottom wall 104 is indirectly limited by limiting the above distance.

[0099] By limiting the distance to less than or equal to 2 mm, the distance between the heating layer 108 and the side wall 102 or the bottom wall 104 is not too large, which would result in insufficient heating power of the glass container 100. At the same time, the size of the protrusion 106 is also limited to prevent it from being too large, which would cause high internal stress between the protrusion 106 and the bottom wall 104 and / or the side wall 102. Therefore, the thermal stability of the glass container 100 is improved.

[0100] In any of the above technical solutions, the distance between the end of the protrusion 106 away from the side wall 102 or the bottom wall 104 and the side wall 102 and / or the bottom wall 104 is less than or equal to 1 mm.

[0101] In this technical solution, by further limiting the range of the distance, the glass container 100 is ensured to have a high heating power. At the same time, the size of the protrusion 106 is avoided from being too large, so that the protrusion 106 and the bottom wall 104 and / or side wall 102 will generate high internal stress, thus making the glass container 100 have high thermal stability.

[0102] Example 5

[0103] In one possible embodiment, the bottom wall 104 has a first surface facing away from the side wall 102, and the protrusion 106 protrudes from the first surface.

[0104] Normally, the bottom wall 104 has a first surface facing away from the side wall 102 for contacting the working surface on which the glass container 100 is placed. By defining the protrusion 106 protruding from the first surface, the protrusion 106 can be used to support the bottom wall 104 and the side wall 102, reducing the probability of the first surface directly contacting the working surface, reducing the probability of the glass container 100 breaking, and thus improving the service life of the glass container 100.

[0105] Example 6

[0106] In one possible embodiment, the protrusion 106 is at least partially located outside the accommodating space, protruding away from the central axis of the bottom wall 104.

[0107] In this technical solution, by limiting the protrusion 106 to protrude away from the central axis of the bottom wall 104, it is easy to reduce the overall height of the glass container 100 and realize the miniaturization of the glass container 100.

[0108] Furthermore, the bottom wall 104 will deform under the influence of the side wall 102 and the gravity of the heated liquid in the accommodating space. By limiting the protrusion 106 to protrude away from the central axis of the bottom wall 104, the deformation of the bottom wall 104 when the glass container 100 is placed can be reduced, thereby reducing the probability of the bottom wall 104 breaking due to excessive deformation.

[0109] Furthermore, it can also reduce the impact of heat accumulation at the protrusion 106 on the connection between the bottom wall 104 and the side wall 102, such as promoting heat transfer to the edge of the bottom wall 104 to reduce thermal stress at the connection. At the same time, it can also promote heat transfer to the side wall 102 to reduce the risk of cracking between the bottom wall 104 and the side wall 102.

[0110] Example 7

[0111] In one possible embodiment, such as Figure 1 As shown, the heating layer 108 is located on one side of the accommodating space.

[0112] In this technical solution, the existing glass container 100 is usually heated based on heat conduction. However, the heating power of the above-mentioned heating method is low. Therefore, the heating efficiency of the glass container 100 is low in actual use.

[0113] Meanwhile, since the bottom wall 104 of the glass container 100 radiates a large amount of heat when it is heated, the energy efficiency of the above heating scheme will be further reduced.

[0114] The technical solution of this application limits the heating layer 108 to one side of the accommodating space so that the heating layer 108 can directly heat the liquid being heated. Compared with the heating method that uses glass as the transfer medium, the heating method of this application has a faster heating speed. At the same time, it also reduces the amount of heat lost by the heating layer 108 through the bottom wall 104. Therefore, the glass container 100 with the above design has high energy efficiency.

[0115] In addition, by limiting the heating layer 108 to one side of the accommodating space, the probability of wear on the heating layer 108 caused by external environmental factors can be reduced, thereby improving the service life of the glass container 100.

[0116] Example 8

[0117] In one possible embodiment, the relative permeability of the weak magnetic metal material is related to its conductivity and oxidation resistance. Specifically, the lower the relative permeability, the higher the conductivity and the stronger the oxidation resistance. By limiting the relative permeability of the weak magnetic metal material to a range of 0 to 10, i.e., in a lower range, the conductivity and oxidation resistance of the weak magnetic metal material are improved. This ensures that after the weak magnetic metal material is used in a slurry, coated onto a substrate, and sintered and cured, the heating layer 108 can still generate eddy currents and has strong heating performance, thus ensuring the heating effect of the glass container 100.

[0118] In any of the above technical solutions, the heating layer 108 includes a weak magnetic metal material, wherein the relative magnetic permeability of the weak magnetic metal material is less than 1.

[0119] In this technical solution, the relative permeability range of the weak magnetic metal material is further limited to 0 to 1. Under the premise of improving the conductivity and oxidation corrosion resistance of the weak magnetic metal material, it is ensured that after the weak magnetic metal material is used as a slurry and coated on the substrate and sintered and cured, the heating layer 108 can still generate eddy current and has strong heating performance, thus ensuring the heating effect of the glass container 100.

[0120] Furthermore, since the protrusion 106 is at least partially located outside the accommodating space and protrudes away from the central axis of the bottom wall 104, the distance between the heating layer 108 and its corresponding electromagnetic heating device 210 can be reduced, thereby improving the electromagnetic induction efficiency.

[0121] In any of the above technical solutions, the heating layer 108 further includes: inorganic matter, wherein the content of weak magnetic metal material in the heating layer 108 is between 60% and 90%, and the content of inorganic matter is between 10% and 40%.

[0122] In any of the above technical solutions, the inorganic material includes one or more of aluminum oxide, silicon oxide, boron oxide, bismuth oxide, and calcium oxide.

[0123] In any of the above technical solutions, the sensing resistance of the heating layer 108 is between 2 ohms and 3 ohms; and / or the inductance of the heating layer 108 is between 75 μH and 90 μH.

[0124] Typically, the glass container 100 is used in conjunction with a coil. By limiting the range of values ​​for the inductance and resistance, the heating power of the glass container 100 is ensured, while the lifespan of the switching devices in the coil used with the finished product is also increased.

[0125] Example 9

[0126] In one possible embodiment, the edge of the heating layer 108 has a first distance from the edge of the protrusion 106.

[0127] In this technical solution, by defining a first distance between the edge of the heating layer 108 and the edge of the protrusion 106, the heat is directly transferred to the bottom wall 104 when the heating layer 108 generates heat, and is not directly transferred to the protrusion 106, thereby promoting the transfer of heat to the bottom wall 104 and the side wall 102.

[0128] Since the heat generated by the heating layer 108 does not directly transfer heat to the protrusion 106, the concentration of heat in localized areas of the bottom wall 104 is reduced, thus lowering the probability of the glass container 100 breaking due to heat concentration in localized areas of the bottom wall 104 and improving the durability of the glass container 100.

[0129] Example 10

[0130] In one possible embodiment, such as Figure 4 As shown, it also includes: a protective layer 110, which is disposed on the outer surface of the heating layer 108 for sealing the heating layer 108; wherein the protrusion 106 and the edge of the protective layer 110 have a second distance.

[0131] In this technical solution, since the heating layer 108 is located within the accommodating space, it can directly contact the object being heated. Therefore, during use, residue from the object will remain on the heating layer 108. Taking boiling water as an example, scale will remain on the heating layer 108. As the glass container 100 is used for longer, the scale will thicken and affect the heating efficiency of the glass container 100. Cleaning it can easily damage the heating layer 108. In addition, the heating layer 108 will also release some harmful substances into the object being heated, affecting the food safety of the heated object.

[0132] The technical solution of this application has a protective layer 110 sealed on the outer surface of the heating layer 108. Due to the presence of the protective layer 110, the damage to the heating layer 108 can be reduced when cleaning scale. At the same time, the properties of the protective layer 110 itself can be used to reduce the adhesion of scale, so as to achieve the glass container 100 without cleaning.

[0133] Furthermore, the presence of the protective layer 110 reduces the amount of harmful substances released from the heating layer 108 into the heated object, thus ensuring the food safety of the heated object.

[0134] Since the protective layer 110 is used to protect the heating layer 108, it needs to cover the outer surface of the heating layer 108. Therefore, by defining a second distance between the protrusion 106 and the edge of the protective layer 110, a distance is ensured between the heating layer 108 and the protrusion 106. This avoids the situation where the distance between the heating layer 108 and the side wall 102 or the bottom wall 104 is too large, resulting in insufficient heating power of the glass container 100. At the same time, it also limits the size of the protrusion 106, preventing it from being too large and causing high internal stress between the protrusion 106 and the bottom wall 104 and / or the side wall 102. Therefore, the thermal stability of the glass container 100 is improved.

[0135] In one possible embodiment, the protective layer 110 is selected as one or a combination of a polytetrafluoroethylene (PTFE) coating, a ceramic coating, or a silicone resin coating. PTFE, ceramic, and silicone resin are all food-grade coatings with high stability; that is, PTFE, ceramic, and silicone resin coatings exhibit strong stability at high temperatures and will not disperse into the material to be heated in the glass container 100, thus preventing contamination of the material during heating and cooking within the container space and improving the stability of the glass container 100. By using a PTFE coating, ceramic coating, or silicone resin coating as the protective layer 110, not only is contact between the magnetic layer and the material within the container space prevented, but also any reaction that may occur after the protective layer 110 comes into contact with the material, thereby improving the user experience.

[0136] Example 11

[0137] In one possible embodiment, the protrusion 106 is made of glass.

[0138] In this technical solution, by limiting the protrusion 106 to be made of glass material, the thermal resistance when transferring heat in the protrusion 106 can be reduced, the probability of the bottom wall 104 and side wall 102 breaking due to the influence of the protrusion 106 can be reduced, and the durability of the glass container 100 can be ensured.

[0139] In any of the above technical solutions, the bottom wall 104 is a glass bottom wall 104.

[0140] In this technical solution, the bottom wall 104 is a glass bottom wall 104. When transferring heat, since the glass material has the characteristic of low thermal resistance, by limiting the bottom wall 104 to a glass bottom wall 104, the heat transfer efficiency of the bottom wall 104 is improved, and the heating efficiency of the glass container 100 is improved.

[0141] In any of the above technical solutions, the sidewall 102 is a glass sidewall 102. When transferring heat, since the glass material has the characteristic of low thermal resistance, by limiting the sidewall 102 to a glass sidewall 102, the heat transfer efficiency of the sidewall 102 is improved, and the heating efficiency of the glass container 100 is improved.

[0142] In any of the above technical solutions, the bottom glass wall 104 and the side glass wall 102 are made of high borosilicate glass.

[0143] Example 12

[0144] According to one embodiment of the present invention, such as Figure 5 As shown, a cooking appliance 200 is provided, including: a glass container 100 as described above; and an electromagnetic heating device 210 for providing heat to the glass container 100.

[0145] This invention provides a cooking appliance 200 comprising a glass container 100 and an electromagnetic heating device 210. The glass container 100 is selected from any of the possible designs described above. The electromagnetic heating device 210, when energized, provides energy to the glass container 100, thereby heating the material inside the glass container 100. Since the cooking appliance 200 has any of the glass containers 100 described above, it possesses all the beneficial technical effects of any of the glass containers 100 described above.

[0146] In the description of this invention, the term "a plurality of" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0147] In the description of this invention, 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 invention. In this invention, 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.

[0148] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A glass container, characterized in that, include: Sidewall; The bottom wall is connected to the side wall, and the bottom wall and the side wall enclose a receiving space; A heating layer is disposed on the bottom wall; A protrusion is provided at the connection position between the side wall and the bottom wall; The sidewall and the bottom wall are connected by welding, forming a welding area at the connection position, and the protrusion is disposed in the welding area; The sidewall and the bottom wall are connected by fusion welding, and the protrusion, the bottom wall and the sidewall are fused into one piece; Wherein, the sidewall is a glass sidewall, and the bottom wall is a glass bottom wall; The protrusion is arranged around the bottom wall and is made of glass.

2. The glass container according to claim 1, characterized in that, The distance between the end of the protrusion away from the side wall or the bottom wall and the side wall and / or the bottom wall is less than or equal to 2 mm.

3. The glass container according to claim 2, characterized in that, The distance between the end of the protrusion away from the sidewall or the bottom wall and the sidewall and / or the bottom wall is less than or equal to 1 mm.

4. The glass container according to claim 1, characterized in that, The bottom wall has a first surface facing away from the side wall, and the protrusion protrudes from the first surface.

5. The glass container according to claim 1, characterized in that, The protrusion is at least partially located outside the accommodating space and protrudes away from the central axis of the bottom wall.

6. The glass container according to claim 1, characterized in that, The heating layer is located on one side of the accommodating space.

7. The glass container according to claim 1, characterized in that, The heating layer comprises a weakly magnetic metal material, wherein the relative magnetic permeability of the weakly magnetic metal material is less than 1.

8. The glass container according to claim 7, characterized in that, The heating layer further includes: The inorganic material, wherein the content of the weak magnetic metal material in the heating layer is between 60% and 90%, and the content of the inorganic material is between 10% and 40%.

9. The glass container according to claim 8, characterized in that, The inorganic material includes one or more of aluminum oxide, silicon oxide, boron oxide, bismuth oxide, and calcium oxide.

10. The glass container according to claim 8, characterized in that, The sensing resistance of the heating layer is between 2 ohms and 3 ohms; and / or The inductance of the heating layer is between 75 μH and 90 μH.

11. The glass container according to claim 1, characterized in that, The edge of the heating layer and the edge of the protrusion have a first distance.

12. The glass container according to claim 1, characterized in that, Also includes: A protective layer is disposed on the outer surface of the heating layer for sealing the heating layer; The protrusion has a second distance from the edge of the protective layer.

13. A cooking utensil, characterized in that, include: Glass container as described in any one of claims 1 to 12; An electromagnetic heating device is used to provide heat to the glass container.

Images