WO2024001527A1 - 一种烹饪器具及其内胆 - Google Patents

一种烹饪器具及其内胆 Download PDF

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Publication number
WO2024001527A1
WO2024001527A1 PCT/CN2023/092880 CN2023092880W WO2024001527A1 WO 2024001527 A1 WO2024001527 A1 WO 2024001527A1 CN 2023092880 W CN2023092880 W CN 2023092880W WO 2024001527 A1 WO2024001527 A1 WO 2024001527A1
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WO
WIPO (PCT)
Prior art keywords
channel
metal layer
inner pot
cooking utensil
convergence
Prior art date
Application number
PCT/CN2023/092880
Other languages
English (en)
French (fr)
Inventor
朱泽春
邹凌风
崔卫民
谢伟峰
王翔
Original Assignee
九阳股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202210747462.4A external-priority patent/CN115581393A/zh
Priority claimed from CN202221642966.1U external-priority patent/CN217959712U/zh
Priority claimed from CN202320279323.3U external-priority patent/CN219479840U/zh
Application filed by 九阳股份有限公司 filed Critical 九阳股份有限公司
Publication of WO2024001527A1 publication Critical patent/WO2024001527A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/24—Warming devices

Definitions

  • the present invention relates to the technical field of kitchen appliances, and in particular to a cooking utensil and its inner container.
  • the inner pot of cooking utensils in the prior art is generally made of metal, and is heated using a heating plate or IH wire tray.
  • the heating plate or IH wire tray is located at the bottom of the rice cooker, and the heating plate or IH wire is used. When the plate is energized, heat can be transferred to the inner pot, allowing the ingredients in the inner pot to mature.
  • a major problem with the liner in the prior art is uneven heating.
  • the temperature at the bottom may be too high and the temperature at the sides may be insufficient, resulting in uneven heating of the food ingredients, gelatinization at the bottom and raw food at the top.
  • the liner has a hollow interlayer, and a heat transfer fluid is provided in the interlayer.
  • the heat transfer liquid can quickly fill into other areas of the liner.
  • the manufacturing process of the sandwich liner is relatively complex, and the dimensional consistency of the product is difficult to control.
  • the hollow interlayer weakens the strength of the inner tank, and the inner tank will be heated to a higher temperature during use, so it is easy to deform after long-term use, and there may be certain safety hazards.
  • an inner liner with a heat transfer pulse tube has appeared in the prior art.
  • the heat transfer pulse tube is formed by injecting an inflation medium along a preset formation path. , but the distribution of blood vessels in this kind of liner is too close to the mouth flange, and the arrangement of heat transfer vessels limits the setting position of the handle, so it needs to be improved.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an inner container of a cooking utensil that can achieve uniform heating and is convenient for users to use.
  • the present invention adopts the following technical solutions:
  • An inner container of a cooking utensil including a bottom wall, a side wall and a mouth flange.
  • the inner container includes two or more metal layers from the inside to the outside, wherein a fluid channel is formed between the two metal layers.
  • a thermal conductive liquid is provided in the fluid channel.
  • the fluid channel includes a grid channel and a plurality of convergence channels extending from the grid channel toward the mouth of the bile.
  • the grid channel covers at least the lower part of the side wall, and the convergence channels are The end is located below the mouth flange.
  • the fluid channel protrudes toward the outer surface of the inner bag.
  • the converging channel extends upward, and the protruding height of the converging channel gradually decreases along the extending direction.
  • the fluid channel further includes a process channel, and the fluid channel is formed by filling the process channel with gas or liquid.
  • the height difference between the end of the convergence channel and the mouth flange is greater than 20 mm.
  • the inner surface of the liner is provided with a plurality of vertical grooves, and the vertical grooves correspond to the convergence channels.
  • the convergence channels are evenly distributed circumferentially along the side wall of the liner.
  • the inner bag includes at least a first metal layer, a second metal layer and a third metal layer from the inside to the outside, and the fluid is formed between the second metal layer and the third metal layer. aisle.
  • the convergence channel has a vertical section and an inclined section.
  • One end of the vertical section is connected to the grid channel, and the other end is connected to the inclined section.
  • the side wall of the inner tank is provided with a handle, and the handle has a sticker.
  • the fastening part closes the side wall of the inner bag, the fastening part has an escape space, and the avoidance space avoids the inclined section; or the inclined section has an avoidance space, and the avoidance space avoids the fastening part.
  • the present invention also provides a cooking utensil, which includes a pot body and an inner pot, and the inner pot is the inner pot of the above-mentioned cooking utensil.
  • a fluid channel is formed between two metal layers, and a thermal conductive liquid is provided in the fluid channel.
  • the fluid channel includes a grid channel and a convergence channel extending from the grid channel toward the mouth of the bladder,
  • the grid channel covers at least the lower part of the side wall, and the end of the convergence channel is located below the mouth flange. Rapid heat conduction can be achieved through the thermal fluid in the fluid channel, and the fluid channel includes a grid channel and a convergence channel.
  • the grid channel can achieve large-area heat transfer in the inner tank, and the convergence channel can achieve condensation and reflux of the thermal fluid.
  • the existence of multiple convergence channels can take into account the heat transfer above the liner and ensure uniform heating of the side walls of the liner.
  • the area above the side wall of the liner is changed from a grid channel to a convergence channel, which reduces the heat transfer from the mouth flange while taking into account the heat transfer above the liner.
  • a convergence channel prevents the vaporized thermal fluid from continuing to move. While vaporizing, the temperature is also transferred to the liner body.
  • the heat transfer fluid in the convergence channel will liquefy and condense after gathering enough heat transfer fluid.
  • the convergence channel extends upward, and the heat transfer fluid can flow back after condensation, and so on. Back and forth. The existence of the convergence channel allows the thermal transfer liquid to have a fixed convergence position after vaporization to achieve condensation and reflux.
  • the fluid channel further includes a process channel, and the fluid channel is formed by filling the process channel with gas or liquid.
  • gas or liquid can be filled to cause the metal layer to bulge, forming grid channels and convergence channels. That is to say, the process channel has a process inlet, while the convergence channel is formed by filling the gas or liquid to make the metal layer bulge. There is no process inlet.
  • the position of the process inlet can be ensured to be fixed. to facilitate corresponding process processing.
  • the inner surface of the inner bag is provided with a plurality of vertical grooves, and the vertical grooves correspond to the convergence channels.
  • the vertical grooves can increase the heat transfer area on the inner surface of the liner, and the convergence channel is equipped with thermal fluid, which is the area with the best heat conduction effect, which can promote the transfer of heat from the liner to the food in the liner, achieving Efficient and fast heating.
  • the convergence channel As the convergence channel extends upward, the protruding height gradually decreases. In the process of gradually extending, the convergence channel gradually becomes flush with the outer surface of the liner, gradually reducing the heat transfer from the liner to the upper side, so that there is no obvious convex height difference on the outer surface of the liner, and it is also convenient to wipe and clean the outer surface of the liner. .
  • the height difference between the end of the convergence channel and the mouth flange is greater than 20 mm. This design can reduce the heat transferred from the convergence channel to the mouth flange. During normal cooking, the ingredients in the inner pot will not be filled up to the mouth flange, so the mouth flange does not need to transfer heat compared to the bottom. If too much heat is transferred to the mouth flange, it will Affects user access and use. If the height difference between the end of the convergence channel and the mouth flange is greater than 20 mm, it will have little impact on the use of the inner pot. It can also transfer heat to the top of the inner pot to heat a large amount of food in the inner pot.
  • the convergence channels are evenly distributed along the circumferential direction of the inner bag side wall. So that the heat transfer and condensation effects can be evenly distributed cloth to achieve even heating and condensation of the inner tank.
  • the convergence channel has a vertical section and an inclined section. Since the heat conduction requirements are lower toward the mouth area, the setting of the inclined section can increase the area covered by the fluid channel within a limited height range and increase the practicality of the product. And through the setting of the handle, it is convenient for users to take and place the inner tank. Due to the existence of the convergence channel, it is difficult to fix the handle. However, in this application, an escape space is provided at the fastening part, so that the inclined section can be located in the escape space, which solves the problem of fixing the handle.
  • Figure 1 is a cross-sectional view of the inner tank in Embodiment 1 of the present invention.
  • Figure 2 is an enlarged view of part A in Figure 1;
  • FIG. 3 is a schematic diagram of the inner tank in Embodiment 1 of the present invention.
  • Figure 4 is a schematic diagram 2 of the inner tank in Embodiment 1 of the present invention.
  • Figure 5 is a schematic diagram of the inner tank in Embodiment 2 of the present invention.
  • Figure 6 is a second schematic diagram of the inner tank in Embodiment 2 of the present invention.
  • Figure 7 is a cross-sectional view of the inner tank in Embodiment 2 of the present invention.
  • Figure 8 is a partial enlarged view of B in Figure 7.
  • Inner tank 100 Inner tank bottom wall 11, inner tank side wall 12, arc-shaped transition part 13, first metal layer 1, Second metal layer 2, third metal layer 3, fourth metal layer 4, fluid channel 5, grid channel 51, convergence channel 52, vertical section 521, inclined section 522, process channel 53, process inlet 54, vertical Groove 6, mouth flange 7, handle 8, fastening part 81, avoidance space 82, temperature measurement area 9.
  • the invention provides an inner container of a cooking utensil, which includes a bottom wall, a side wall and a mouth flange.
  • the inner container includes two or more metal layers from the inside to the outside, wherein the space between the two metal layers A fluid channel is formed, and a heat transfer liquid is provided in the fluid channel.
  • the fluid channel includes a grid channel and a plurality of convergence channels extending from the grid channel to the mouth of the bile.
  • the grid channel at least covers the lower part of the side wall, so Shu Hui Ju Tong
  • the end of the tract is located below the mouth flange.
  • the inner container of the present invention can achieve uniform heating and is convenient for users to use.
  • the invention also provides a cooking utensil with the above inner pot.
  • this embodiment provides an inner container 100 of a cooking utensil, which includes a bottom wall and a side wall.
  • the inner container includes at least a first metal layer 1 and a second metal layer from the inside to the outside. 2.
  • a fluid channel 5 is formed between the second metal layer 2 and the third metal layer 3, and a thermal conductive liquid is provided in the fluid channel 5.
  • the fourth metal layer 4 or the first metal layer 1 is a magnetically permeable layer.
  • a fluid channel 5 is formed between the second metal layer 2 and the third metal layer 3, and a thermal conductive liquid is provided in the fluid channel 5.
  • the thermal conductive liquid can quickly expand to other areas of the inner container, thereby realizing the inner container. Quickly conducts heat.
  • the second metal layer 2 and the third metal layer 3 are made of the same material, so that the two have good bonding properties and will not cause the second metal layer and the third metal layer to separate when the thermal transfer fluid is heated.
  • the fourth metal layer may be present or not, and the first metal layer may be present or not.
  • the first metal layer may be present or not.
  • it may have only the second metal layer 2 and the third metal layer 3, or it may have only the first metal layer 1, the second metal layer 2, and the third metal layer 3, or it may have only the second metal layer 2 and the third metal layer 3.
  • Both the third metal layer 3 and the fourth metal layer 4 can form fluid channels and provide heat transfer liquid to achieve rapid heat conduction of the inner tank.
  • Thermal transfer fluid can be a refrigerant, such as Freon, or other thermal superconducting fluid.
  • refrigerant such as Freon
  • superconducting fluids used in radiators.
  • the principle of rapid heat conduction of thermal fluid is similar to that of thermosiphons, heat pipes, etc.
  • the thermal fluid When heated, the thermal fluid can quickly vaporize and quickly diffuse to other areas of the fluid channel 5, and at the same time, the heat can be quickly transferred to other areas of the inner tank to achieve uniform heating of the inner tank.
  • the thermal transfer fluid is injected into the fluid channel 5 after a certain vacuum environment is formed.
  • the second metal layer 2 and the third metal layer 3 are made of the same material, so that the second metal layer 2 and the third metal layer 3 can be better closely combined.
  • the second metal layer 2 and the third metal layer 3 are aluminum.
  • Aluminum has a better thermal conductivity, and there is a thermal fluid between the two, so that The heat can be quickly transferred to other areas of the liner to achieve rapid heat transfer in the liner.
  • the fluid channel 5 protrudes toward the outer surface of the inner bladder. That is, the fluid channel 5 is formed in such a manner that at least a part of the third metal layer 3 protrudes outward. On the one hand, it increases the heating area of the liner without affecting the use of the inner surface of the liner, making it easier to clean the inner surface of the liner.
  • the fluid channel can be protruded toward the inner surface or toward the outer surface.
  • the fluid channel is made to protrude toward the outer surface, while the inner surface is basically smooth, which facilitates the inspection of the food in the inner pot. Serve and clean.
  • “outside” and “outward” refer to the direction away from the center line of the liner
  • “inside” and “inward” refer to the direction toward the center line of the liner.
  • the thickness of the second metal layer 2 is greater than the thickness of the third metal layer 3 . Since a fluid channel is provided between the second metal layer 2 and the third metal layer 3, during the process of forming the fluid channel, due to the small thickness of the outer layer, it can be ensured that the third metal layer deforms outward, ensuring that the final formed inner layer is The bile fluid channel protrudes toward the outer surface of the inner bag instead of protruding toward the inner surface of the inner bag to affect the user's use.
  • the first metal layer 1 is made of stainless steel, and the first metal layer 1 is the innermost side of the inner tank. That is to say, the inner surface of the inner tank is made of stainless steel, and the inner surface does not need to be provided with a non-stick coating, which greatly improves the efficiency of the inner tank. The service life of the inner tank 3 is improved. Since there is no non-stick coating on the inner surface, there is no need to worry about the coating falling off. You can use steel wool to clean the inner surface of the inner tank during cleaning.
  • the first metal layer can also be made of other materials that can achieve magnetic conductivity, such as iron.
  • the first metal layer 1, the second metal layer 2 and the third metal layer 3 are formed into a composite plate and then stretched to form an inner bladder shape.
  • the first metal layer, the second metal layer and the third metal layer are stainless steel, aluminum and aluminum respectively, and the three are combined together to form the bladder shape of the inner bladder through stretching.
  • the specific manufacturing method can be to first combine aluminum and aluminum to form a composite aluminum material, then combine stainless steel with the composite aluminum material, and then stretch it to form the inner bladder shape.
  • the fourth metal layer 4 is a magnetically permeable layer formed by spraying, so that the inner pot can be electromagnetically heated. Moreover, since the outer surface of the fourth metal layer 4 is the outer surface of the inner pot, it is far away from the electromagnetic coil. More recently, possible shielding of the magnetic field by other metal layers is reduced to achieve good electromagnetic heating effects. Since a fluid channel is formed between the second metal layer 2 and the third metal layer 3, in order to ensure that the fluid channel protrudes outward and avoids the impact of the external fourth metal layer 4 on the process of the protruding fluid channel, this embodiment In the process, the fluid channel is formed by protruding outward first, and then the magnetic conductive layer is sprayed.
  • the fluid channel 5 includes a grid channel 51 and a convergence channel 52 located above the grid channel, and the convergence channel 52 is connected to the grid channel 51 .
  • grid The channel 51 means that the fluid channel 5 is formed between the meshes, and there is no gap between the second metal layer 2 and the third metal layer 3 where the meshes are located.
  • Mesh can be triangle, quadrilateral, pentagon, hexagon, heptagon, octagon and other shapes. What is shown in the drawings of this embodiment is a hexagonal grid. Fluid channels 5 are formed on the six sides of the hexagon, and the heat transfer liquid is located in the fluid channels.
  • a hollow fluid channel is formed at the separation point between the second metal layer 2 and the third metal layer 3; and the internal area bounded by the six sides of the hexagon is flat (i.e., there is no protrusion), that is, The inner area of the six sides is where the second metal layer 2 and the third metal layer 3 are combined. The two are hot-pressed and compounded together. This structure can effectively ensure the overall strength of the liner.
  • a convergence passage 52 is also provided above the grid passage 51. After being heated and vaporized, the heat transfer liquid in the fluid passage 5 flows upward, and finally converges on the convergence passage, condenses and flows back to the bottom, and finally The heat transfer area of the thermal fluid in the inner tank is expanded.
  • the existence of the convergence channel can also take into account the heat transfer above the liner, ensuring uniform heating of the side walls of the liner. The area above the side wall of the liner is changed from a grid channel to a convergence channel, reducing the heat transfer problems at the mouth flange.
  • the heat transfer above the inner tank is taken into consideration, and in specific applications, when the thermal fluid is heated by the heating device below and vaporized and quickly fills the fluid channel of the inner tank, one end converges upward to the convergence channel, and the convergence channel prevents As the vaporized thermal fluid continues to move, it also transfers the temperature to the inner tank body while vaporizing.
  • the thermal fluid in the convergence channel will liquefy and condense after gathering enough thermal fluid, and the convergence channel extends upward. Yes, the thermal fluid can flow back after condensation, and the cycle repeats.
  • the strength of the inner tank filled with thermal transfer fluid can be improved, and the staggered grids can achieve large-area distribution of the thermal transfer fluid.
  • the bottom is a heating device. After heating the inner pot, the heating device will transfer heat to other areas of the inner pot. Since the inner pot is used to place ingredients for cooking, the area near the mouth does not require heating. The requirements for the lower part and the bottom are high, so in this embodiment, a convergence channel is provided on the upper part of the inner tank, which takes into account the heat transfer effect and application convenience of the inner tank.
  • both the upper part of the liner and the lower part of the liner are provided with grid channels.
  • This causes the temperature of the mouth flange to be too high, which affects the convenience of use.
  • the side walls of the inner tank are all grid channels, the heat transfer fluid cannot form a convergence effect and cannot achieve the purpose of condensation.
  • a convergence channel is provided above the grid channel of the inner tank, which can take into account the heat transfer in the upper part of the inner tank without causing the temperature to be too high, and also has the effect of convergence and condensation.
  • the grid channel 51 covers at least the lower part of the side wall,
  • the end of the convergence channel 52 is located below the mouth flange 7 .
  • the convergence channel 52 extends upward to expand the heating area of the inner container.
  • the end of the convergence channel 52 is located below the mouth flange to prevent excessive heat from being transferred to the mouth flange and causing the temperature of the inner container. If it is too high, it will affect the user's ability to use the inner tank.
  • the height difference between the end of the converging channel 52 and the mouth flange is greater than 20 mm to reduce the heat transferred from the converging channel 52 to the mouth flange.
  • the ingredients in the inner pot will not be filled to the mouth flange 7, so the mouth flange 7 does not need to transfer heat relative to the bottom. If too much heat is directed toward the mouth flange, On the contrary, delivery will affect the user's access and use.
  • the applicant determined that the height difference between the end of the convergence channel 52 and the mouth flange is greater than 20 mm, which will have little impact on the use of the liner end. Specifically, the end of the convergence channel should be higher than the maximum scale line of the liner, and the height difference from the mouth flange should be greater than 20 mm.
  • the convergence channel 52 For regular size (such as 4L or 5L) liner, the convergence channel 52 The height difference between the end and the mouth flange is 20-30 mm, which can take into account the heat transfer effect of the inner tank and the convenience of application.
  • the end of the convergence channel 52 is relative to the flow direction of the thermal transfer fluid. In the figure, the end refers to the uppermost end of the convergence channel 52 .
  • the convergence channels 52 are evenly distributed along the circumferential direction of the inner bag side wall.
  • the heat transfer and condensation effects can be evenly distributed to achieve uniform heating and condensation of the inner tank.
  • the protruding height gradually decreases.
  • the convergence channel 52 gradually becomes flush with the outer surface of the liner at the grid, gradually reducing the heat transfer from the liner to the upper side, so that there is no obvious step difference on the outer surface of the liner, and it is also convenient to inspect the outer surface of the liner. Perform wipe cleaning.
  • the protrusion height refers to the protrusion distance of the third metal layer 3 where the convergence channel 52 is located relative to the second metal layer 2 .
  • a vertical groove 6 is provided on the inner surface of the liner, and the vertical groove 6 corresponds to the convergence channel 52 .
  • the vertical groove 6 can increase the heat transfer area on the inner surface of the liner, and the convergence channel 52 is provided with thermal fluid, which is the area with the best heat conduction effect and can promote the transfer of heat from the liner to the food in the liner. , achieving efficient and rapid heating.
  • the fluid channel 5 further includes a process channel 53 , and the fluid channel is formed by filling the process channel 53 with gas or liquid.
  • the process channel 53 has one end extending downward to connect to the fluid channel, and one end extending upward to the mouth flange of the liner as a process inlet 54.
  • Gas or liquid can be filled through the process inlet 54 to make the third metal layer 3 is deformed outwardly to form a hollow fluid channel 5, through which the process inlet can be evacuated and then injected with thermal fluid. Since the process inlet is located on the flange of the mouth, it is convenient for filling gas or liquid and vacuuming. Or process treatment such as injecting thermal transfer fluid. After performing the corresponding process treatment, the process inlet can be cut off, and the process channel 53 can be sealed by welding or crimping.
  • a temperature-resistant isolation layer such as temperature-resistant graphite, is provided between the second metal layer and the third metal layer.
  • the temperature-resistant isolation layer is in a preset fluid channel shape. Preset fluid channel shapes can be designed and printed onto the corresponding metal layers to achieve the grid channel pattern that appears in the final product. Since there is a temperature-resistant isolation layer between the two metal layers, during hot pressing compounding, the preset fluid channel shape has a temperature-resistant isolation layer, so it will not be compounded together, and gas or gas will be filled between the two metal layers. After the fluid is released, the areas that are not bonded together will bulge.
  • the second metal layer and the third metal layer are thermally pressed together to form a first composite plate, and then the first composite plate and the first metal layer are compounded together to form a second composite plate.
  • Stretching can refer to the existing conventional process. The main process is to place the plate on the corresponding mold and draw it through stamping.
  • the process entrance can be formed by prying off one of the metal layers or drilling a hole.
  • the fourth metal layer by spraying.
  • the fourth metal layer outside the third metal layer is in the third metal layer. After the metal layer expands outward, it is formed by spraying.
  • This design can prevent the outer fourth metal layer from interfering with the outward expansion of the third metal layer. That is to say, when the third metal layer expands outward, it belongs to the outermost layer of the inner tank, so it can expand outward without restraint. After expansion and deformation, it is then sprayed to form the fourth metal layer. Through different materials, it can Achieve magnetic heating or wear-resistant, anti-rust and other effects.
  • the inner tank of this embodiment is provided with a fluid channel, and a thermal fluid is provided in the fluid channel.
  • the thermal fluid can quickly expand to other areas of the inner tank to achieve rapid heat conduction of the inner tank, and the second metal layer It is made of the same material as the third metal layer, so that the two have good bonding properties and will not cause the second metal layer and the third metal layer to separate when the thermal transfer fluid is heated.
  • It also has a first metal layer inside and a fourth metal layer outside it, which can strengthen and protect the second metal layer and the third metal layer in the middle.
  • the conductor is set through the fourth metal layer or the first metal layer.
  • the magnetic layer can realize electromagnetic heating of the inner tank.
  • the fourth metal layer may be present or not, and the first metal layer may be present or not.
  • protective layer wear-resistant layer, anti-rust layer and other materials can also be provided.
  • the present invention also provides a cooking utensil, which can be a rice cooker or an electric pressure cooker, etc., including a pot body, and the pot body has an inner pot according to the above embodiment.
  • the cooking utensil also includes a pot cover, and a heating device is provided in the pot body. The heating device can heat an inner pot, and the ingredients to be cooked can be placed in the inner pot.
  • this embodiment proposes another inner bladder, the difference of which mainly lies in the convergence channel 52 .
  • the convergence channel 52 has a vertical section 521 and an inclined section 522. One end of the vertical section 521 is connected to the grid channel 51, and the other end is connected to the inclined section 522.
  • a handle 8 is provided on the side of the inner bag, and the handle has a fastening part 81 that fits the side wall of the inner bag.
  • the fastening part 81 has an escape space, and the avoidance space avoids the inclined section 521 .
  • the convergence channel has a vertical section 521 and an inclined section 522.
  • the setting of the inclined section can increase the area covered by the fluid channel within a limited height range and increase the practicality of the product. . And through the setting of the handle, it is convenient for users to take and place the inner tank. Due to the existence of the convergence channel, it is difficult to fix the handle.
  • an escape space 82 is provided through the fastening part 81 so that the inclined section can be located in the escape space 82, thus solving the problem of fixing the handle.
  • the fastening part 81 will be as close as possible to the side wall of the inner bag, and the avoidance space 82 is provided so that The inclined section extends into the fastening part 81 of the handle, and the handle 8 can be limited to a certain extent in the up and down or left and right directions, thus preventing the handle from being unfixed in its installation position.
  • the handle can be fixed by screws or buckle structures.
  • the screws or buckle structures will be positioned to avoid the convergence channel to avoid damage to the convergence channel during the installation process and cause leakage of the thermal fluid.
  • the shape of the escape space can be adapted to the shape of the inclined section extending into the handle, so that the inclined section can extend exactly into the avoidance space.
  • the fastening part has an escape space.
  • the inclined section may also have an escape space, and the escape space avoids the fastening part.
  • the inclined section may have an interruption when it extends upward because it may encounter the fastening part to form an avoidance space to avoid interference with the fastening part.
  • the inclined section extends upward, its protruding height becomes very small to form an escape space to avoid interference with the fastening part.
  • the protruding height of the inclined section refers to the distance from which the third metal layer 3 at which the inclined section is located protrudes outward relative to the second metal layer 2 .
  • the protruding height of the inclined section 522 in the avoidance space 82 is smaller than the protruding height of the vertical section 521 . Since the inclined section 522 partially extends into the avoidance space 82, its protruding height is relatively low, which facilitates the arrangement of the avoidance space and facilitates the firm fixation of the handle.
  • the protruding height of the inclined section 522 gradually decreases in the process of extending outward.
  • the width of the inclined section 522 gradually decreases in the process of extending outward. In the process of gradual extension, the inclined section gradually moves away from the bottom of the liner. The reduction in width can reduce heat transfer and reduce the temperature rise at the mouth of the liner.
  • the grid channel 51 includes a bottom wall grid channel, a side wall grid channel and an arc wall grid channel.
  • the bottom wall grid channel is located at the bottom of the inner tank.
  • Wall 11 side wall grid channels are located on the side wall 12 of the liner, and arc-shaped wall grid channels are located at the arc-shaped transition portion 13 between the bottom wall of the liner and the side wall of the liner.
  • Grid channels 51 are provided on the bottom wall, side walls and arc-shaped transition portion of the inner tank, which can facilitate heat transfer of the inner tank.
  • the lower part of the side wall of the inner bladder has a mesh channel and the upper part has a convergence channel 52 .
  • a plurality of hexagons are formed on the outer surface of the inner bag, and grid channels 51 are formed between the hexagons.
  • the size of the grid at the arc-shaped wall grid channel in the height direction is greater than the size in the width direction.
  • a hexagonal grid is taken as an example. That is to say, the grid at the arc-shaped wall grid channel is not a regular hexagon, but the height dimension is larger than the width. The size is visually on the taller and thinner side. This structure can adapt to the deformation of the arc-shaped transition portion when the liner is stretched during manufacturing.
  • the temperature measuring area 9 there is a temperature measurement area 9 on the bottom wall, and the bottom wall grid channel surrounds the temperature measurement area 9 .
  • the temperature measuring area 9 can be fitted to measure the temperature of the inner container.
  • the inner pot of this embodiment can also be used in cooking utensils.
  • the cooking utensil has a pot body, and the pot body is provided with the inner pot of this embodiment.
  • the inner pot in the drawings of this embodiment has a handle and a pot tooth on the flange of the inner pot. During actual use, the handle or pot tooth and other structures can be eliminated according to actual needs.

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Abstract

本发明提供了一种烹饪器具的内胆，包括底壁、侧壁和口部翻边，所述内胆由内至外包括两层或两层以上的金属层，其中两个金属层之间形成流体通道，流体通道内设有导热液，所述流体通道包括网格通道、自网格通道向胆口部方向延伸的多条汇聚通道，所述网格通道至少覆盖侧壁的下部，所述汇聚通道的末端位于口部翻边的下方。本发明的内胆能够实现均匀加热的同时方便用户的使用。本发明还提供了一种带有上述内胆的烹饪器具。

Description

一种烹饪器具及其内胆
本申请要求以下中国专利申请的优先权，其全部内容通过引用结合在本申请中：
2022年6月29日递交中国专利局、申请号为202221642966.1、发明名称为“一种烹饪器具及其内胆”的中国专利申请；
2022年6月29日递交中国专利局、申请号为202210747462.4、发明名称为“一种烹饪器具及其内胆”的中国专利申请；以及
2023年2月22日递交中国专利局、申请号为202320279323.3、发明名称为“一种均匀加热的内胆及其烹饪器具”的中国专利申请。
技术领域
本发明涉及厨房电器技术领域，尤其涉及一种烹饪器具及其内胆。
背景技术
现有技术中的烹饪器具，例如电饭煲或电压力煲，其内胆一般为金属材质，采用发热盘或者IH线盘进行加热，发热盘或IH线盘设在电饭煲的底部，发热盘或IH线盘通电可将热量传递给内胆，使得内胆中的食材熟化。
现有技术中的内胆存在一个主要的问题就是受热不均，可能底部温度太高，而侧部温度不足，导致食材受热不均，底部糊化而上方夹生。
为了解决受热不均的问题，现有技术中出现了一种均热内胆，内胆具有中空的夹层，夹层内设置导热液，内胆在受热时导热液可以迅速填充到内胆的其他区域。但是夹层式内胆制造工艺比较复杂，产品的尺寸一致性比较难把握。此外，中空的夹层导致内胆强度有所减弱，而内胆在使用过程中会受热温度变高，因此长期使用后很容易发生形变，而且可能会存在一定安全隐患。
为了解决中空的夹层式内胆的强度及安全问题，现有技术中出现了一种具有传热脉管的内胆，传热脉管是沿预置的形成路径注入吹胀介质而吹胀形成，但是这种内胆的脉管分布太靠近口部翻边，传热脉管的设置使得把手的设置位置受限，故有待改进。
发明内容
本发明所要解决的技术问题在于克服现有技术的不足而提供一种烹饪器具的内胆，能够实现均匀加热的同时方便用户的使用。
为解决上述技术问题，本发明采用如下技术方案：
一种烹饪器具的内胆，包括底壁、侧壁和口部翻边，所述内胆由内至外包括两层或两层以上的金属层，其中两个金属层之间形成流体通道，流体通道内设有导热液，所述流体通道包括网格通道、自网格通道向胆口部方向延伸的多条汇聚通道，所述网格通道至少覆盖侧壁的下部，所述汇聚通道的末端位于口部翻边的下方。
在本发明一实施例中，所述流体通道向内胆外表面凸出。
在本发明一实施例中，所述汇聚通道向上延伸，沿延伸方向，所述汇聚通道的凸出高度逐渐降低。
在本发明一实施例中，所述流体通道还包括工艺通道，所述流体通道为通过向工艺通道充入气体或液体形成。
在本发明一实施例中，所述汇聚通道的末端与口部翻边的高度差大于20毫米。
在本发明一实施例中，所述内胆内表面设有多个竖向凹槽，所述竖向凹槽对应所述汇聚通道。
在本发明一实施例中，所述汇聚通道沿内胆侧壁周向均匀分布。
在本发明一实施例中，所述内胆由内至外至少包括第一金属层、第二金属层和第三金属层，所述第二金属层和第三金属层之间形成所述流体通道。
在本发明一实施例中，所述汇聚通道具有竖直段和倾斜段，所述竖直段一端连接网格通道，另外一端连接倾斜段，所述内胆侧壁设有把手，把手具有贴合内胆侧壁的紧固部，所述紧固部具有避让空间，所述避让空间避让所述倾斜段；或者所述倾斜段具有避让空间，所述避让空间避让所述紧固部。
本发明还提出了一种烹饪器具，包括锅体和内胆，所述内胆为上述的烹饪器具的内胆。
本发明具有以下有益效果：
本发明的内胆，其中两个金属层之间形成流体通道，流体通道内设有导热液，所述流体通道包括网格通道、自网格通道向胆口部方向延伸的汇聚通道， 所述网格通道至少覆盖侧壁的下部，所述汇聚通道的末端位于口部翻边的下方。通过流体通道内的导热液可以实现快速导热，而流体通道包括了网格通道和汇聚通道，网格通道可以实现内胆的大面积传热，汇聚通道可以实现导热液的冷凝和回流。而多条汇聚通道的存在又可以兼顾内胆上方的传热，确保内胆侧壁的均匀受热。将内胆侧壁上方的区域由网格通道变成了汇聚通道，减少了口部翻边传热的同时兼顾了内胆上方的传热。而且，在具体应用时，导热液在下方加热装置加热气化迅速填充到内胆的流体通道的过程中，一端向上汇聚到汇聚通道，汇聚通道阻止了气化了的导热液的继续移动，在气化的同时也将温度传递给了内胆本体，汇聚通道内的导热液在汇聚足够的导热液后会液化冷凝，而汇聚通道是向上方延伸的，导热液在冷凝后可以回流，如此循环往复。汇聚通道的存在使得导热液在气化后有了固定的汇聚位置，实现冷凝和回流。
所述流体通道还包括工艺通道，所述流体通道为通过向工艺通道充入气体或液体形成。通过设置工艺通道可以充入气体或液体使得金属层鼓起，形成网格通道和汇聚通道。也就是说工艺通道是具有一个工艺入口，而汇聚通道是通过充入气体或液体使得金属层鼓起形成的，是没有工艺入口的，通过设置特定的工艺通道，可以确保工艺入口的位置是固定的，方便进行相应的工艺处理。
所述内胆内表面设有多个竖向凹槽，所述竖向凹槽对应所述汇聚通道。竖向凹槽可以增大内胆内表面的传热面积，而汇聚通道处设置有导热液，是热量传导效果最佳的区域，可以促进将内胆的热量传递给内胆中的食材，实现高效快速的加热。
所述汇聚通道向上延伸的过程中，凸出高度逐渐降低。汇聚通道逐步延伸的过程中，逐渐与内胆外表面平齐，逐步减少内胆向上方热量的传递，使得内胆外表面没有明显的凸起高度差，也方便对内胆外表面进行擦拭清洗。
所述汇聚通道的末端与口部翻边的高度差大于20毫米。如此设计，可以减少汇聚通道传递到口部翻边的热量。正常烹饪时，内胆中的食材不会放满到口部翻边处，所以口部翻边相对下方来说，是不需要传热的，若过多的热量向口部翻边传递反而会影响用户的端取使用。而汇聚通道的末端与口部翻边的高度差大于20毫米对内胆端取使用影响小，也可以将热量传递到内胆上方，实现内胆中大量食材的加热。
所述汇聚通道沿内胆侧壁周向均匀分布。使得传热和冷凝效果都能均匀分 布，实现内胆的均匀受热和冷凝。
汇聚通道具有竖直段和倾斜段，由于越到口部区域，对导热的要求越低，通过倾斜段的设置可以在有限高度范围内，增加流体通道覆盖的面积，增加产品的实用性。而通过把手的设置，方便用户取放内胆。由于汇聚通道的存在，导致把手难以固定，而本申请通过紧固部设置避让空间，使得倾斜段可以位于避让空间内，解决了把手固定的难题。
本发明的这些特点和优点将会在下面的具体实施方式、附图中详细的揭露。
附图说明
下面结合附图对本发明做进一步的说明：
图1为本发明实施例一中内胆剖视图；
图2为图1中A处局部放大图；
图3为本发明实施例一中内胆示意图一；
图4为本发明实施例一中内胆示意图二；
图5为本发明实施例二中内胆示意图一；
图6为本发明实施例二中内胆示意图二；
图7为本发明实施例二中内胆剖视图；
图8为图7中B处局部放大图。
附图标记：
内胆100、内胆底壁11、内胆侧壁12、弧形过渡部13、第一金属层1、
第二金属层2、第三金属层3、第四金属层4、流体通道5、网格通道51、汇聚通道52、竖直段521、倾斜段522、工艺通道53、工艺入口54、竖向凹槽6、口部翻边7、把手8、紧固部81、避让空间82、测温区9。
具体实施方式
本发明提供了一种烹饪器具的内胆，包括底壁、侧壁和口部翻边，所述内胆由内至外包括两层或两层以上的金属层，其中两个金属层之间形成流体通道，流体通道内设有导热液，所述流体通道包括网格通道、自网格通道向胆口部方向延伸的多条汇聚通道，所述网格通道至少覆盖侧壁的下部，所述汇聚通 道的末端位于口部翻边的下方。本发明的内胆能够实现均匀加热的同时方便用户的使用。本发明还提供了一种带有上述内胆的烹饪器具。
下面结合本发明实施例的附图对本发明实施例的技术方案进行解释和说明，但下述实施例仅为本发明的优选实施例，并非全部。基于实施方式中的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得其他实施例，都属于本发明的保护范围。
实施例一
参照图1至图4所示，本实施例给出一种烹饪器具的内胆100，包括底壁和侧壁，所述内胆由内至外至少包括第一金属层1、第二金属层2、第三金属层3和第四金属层4，所述第二金属层2和第三金属层3之间形成流体通道5，所述流体通道5内设有导热液。所述第四金属层4或者第一金属层1是导磁层。通过第二金属层2和第三金属层3之间形成流体通道5，在流体通道5内设置导热液，在内胆受热时，导热液可以迅速扩充到内胆的其他区域，实现内胆的快速导热。较佳的，第二金属层2和第三金属层3为相同材质，使得两者的结合性好，在导热液受热时不会导致第二金属层和第三金属层分离。对于流体通道来说，其内侧还具有第一金属层1，其外侧具有第四金属层4，可以对中间的第二金属层2和第三金属层3起到加强和保护作用。通过第四金属层或者第一金属层设置导磁层，可以实现内胆的电磁加热。当然，也可以是，第四金属层可以有或者没有，第一金属层可以有或者没有。比如可以仅具有第二金属层2和第三金属层3，也可以是仅具有第一金属层1、第二金属层2、第三金属层3，或者是仅具有第二金属层2、第三金属层3和第四金属层4，均能够实现形成流体通道并且设置导热液，实现内胆的快速导热。
导热液可以是制冷剂，例如氟利昂等，也可以是其它热超导液。例如应用在暖气片中的超导液。导热液快速导热的原理和热虹吸管、热管等相近似。在受热时导热液可以迅速汽化并快速扩散到流体通道5的其他区域，同时将热量快速传递到内胆的其他区域，实现内胆的均匀加热。具体制造时，导热液是在流体通道5内形成一定的真空环境后再被注入其中。
具体的，其中第二金属层2和第三金属层3为相同材质，如此使得第二金属层2和第三金属层3能够更好的紧密复合在一起。较佳的，所述第二金属层2和第三金属层3为铝。铝的导热效果较好，而二者之间设置有导热液，使得 热量可以快速传递到内胆的其他区域，实现内胆的快速传热。
在本实施例中，参照图1和图2，所述流体通道5向内胆外表面凸出。即，所述流体通道5以第三金属层3的至少一部分向外侧凸出的方式形成。一方面增加了内胆的受热面积，而且不影响内胆内表面的使用，方便对内胆内表面进行清洗。在制造流体通道时，流体通道可以是向内表面或者是向外表面凸出，本实施例中，让流体通道向外表面凸出，而内表面基本是平滑的，方便对内胆中食材的盛取和清洗。本申请中，“外”、“向外”是指远离内胆中心线的方向，“内”、“向内”是指朝向内胆中心线的方向。
在本实施例中，所述第二金属层2的厚度大于第三金属层3的厚度。由于第二金属层2和第三金属层3之间设有流体通道，在形成流体通道的过程中，由于外层厚度偏小，可以确保第三金属层向外发生形变，确保最终成型的内胆流体通道向内胆外表面凸出，而不是向内胆内表面凸出而影响用户的使用。
在本实施例中，第一金属层1为不锈钢材质，第一金属层1为内胆的最内侧，也就是说内胆的内表面为不锈钢，其内表面可以不设置不沾涂层，大大提高了内胆3的使用寿命，由于内表面没有不沾涂层，不用担心涂层脱落的问题，在清洗时可以使用钢丝球清洗内胆内表面。当然，第一金属层也可以是其他可以实现导磁的材质，比如可以是铁。
在本实施例中，所述第一金属层1、第二金属层2和第三金属层3形成复合板后拉伸而成内胆的胆形。可选的，第一金属层、第二金属层和第三金属层分别为不锈钢、铝、铝，三者复合在一起之后通过拉伸形成内胆的胆形。具体制造是可以是先将铝和铝复合在一起形成复合铝材，再将不锈钢与复合铝材复合，再拉伸形成内胆的胆形。
在本实施例中，第四金属层4为熔射形成的导磁层，使得内胆可以实现电磁加热，而且由于第四金属层4的外表面即为内胆外表面，其距离电磁线盘更近，减少了其他金属层可能对磁场的屏蔽，以实现良好的电磁加热效果。由于第二金属层2和第三金属层3之间形成了流体通道，为了确保流体通道是向外凸出，避免外部的第四金属层4对外凸的流体通道的工艺造成影响，本实施例中，先外凸形成流体通道之后再熔射导磁层。
在本实施例中，参照图3和图4，所述流体通道5包括网格通道51和位于网格通道上方的汇聚通道52，所述汇聚通道52连通所述网格通道51。网格 通道51指的是流体通道5形成于网格之间，而网格所在处的第二金属层2和第三金属层3之间没有间隙。网格可以是三角形、四边形、五边形、六边形、七边形、八边形等形状。本实施例附图中给出的是六边形的网格，在六边形的六条边上会外凸形成流体通道5，导热液位于流体通道内。也就是，第二金属层2和第三金属层3分离的部位形成有中空的流体通道；而在以六边形的六条边为界的内部区域是平的(即没有外凸)，即，六边的内部区域也就是第二金属层2和第三金属层3结合的位置，二者是热压复合在一起的，这种结构可以有效保证内胆的整体强度。
本实施例中，网格通道51的上方还设有汇聚通道52，流体通道5中的导热液在受热气化后，向上方流动，最终汇聚在汇聚通道上，进行冷凝和回流到下方，最终扩大了内胆中导热液的传热面积。汇聚通道的存在又可以兼顾内胆上方的传热，确保内胆侧壁的均匀受热，将内胆侧壁上方的区域由网格通道变成了汇聚通道，减少了口部翻边传热的同时兼顾了内胆上方的传热，而且在具体应用时，导热液在受下方加热装置加热而气化并迅速填充到内胆的流体通道的过程中，一端向上汇聚到汇聚通道，汇聚通道阻止了气化了的导热液的继续移动，在气化的同时也将温度传递给了内胆本体，汇聚通道内的导热液在汇聚足够的导热液后会液化冷凝，而汇聚通道是向上方延伸的，导热液在冷凝后可以回流，如此循环往复。
通过设置网格通道51，可以提高填充有导热液的内胆的强度，交错设置的网格可以实现导热液的大面积分布。对于内胆来说，底部为加热装置，加热装置在加热内胆之后会传热到内胆的其他区域，由于内胆用于放置食材进行烹饪，而靠近口部的区域对加热要求没有内胆下方和底部要求高，所以本实施例中在内胆上部设置汇聚通道，兼顾了内胆的传热效果和应用便利性。现有技术中，仅内胆下部设有网格通道，而内胆上部无流体通道，这样导致内胆上部的传热效果差；或者，内胆上部和内胆下部都设有网格通道，这样又导致口部翻边温度过高，影响使用的便利性，而且由于内胆侧壁上均是网格通道，导热液不能形成汇聚的效果，不能实现冷凝的目的。但是在本实施例中，在内胆网格通道的上方设置汇聚通道，既能够兼顾内胆上部的传热，且不会导致温度过高，而且具有汇聚和冷凝的效果。
在本实施例中，参照图3和图4，所述网格通道51至少覆盖侧壁的下部， 所述汇聚通道52的末端位于口部翻边7的下方。一方面，汇聚通道52向上延伸，扩大内胆的受热面积，另外一方面，汇聚通道52的末端位于口部翻边的下方，避免过多的热量传递到口部翻边上，造成内胆温度过高，影响用户端取使用内胆。具体的，所述汇聚通道52的末端与口部翻边的高度差大于20毫米，以减少汇聚通道52传递到口部翻边的热量。正常烹饪使用时，内胆中的食材不会放满到口部翻边7处，所以口部翻边7相对下方来说，是不需要传热的，若过多的热量向口部翻边传递反而会影响用户的端取使用。申请人结合产品使用情况及实验测试，认定汇聚通道52的末端与口部翻边的高度差大于20毫米对内胆端取使用影响小。具体来说，汇聚通道的末端应该是高于内胆的最大刻度线，而与口部翻边的高度差大于20毫米，对于常规尺寸(比如4L或者5L)内胆来说，汇聚通道52的末端与口部翻边的高度差为20-30毫米，这样可以兼顾内胆传热效果和应用便利性。其中，汇聚通道52的末端是相对于导热液的流动方向而言。在图中，末端是指汇聚通道52的最上端。
较佳的，所述汇聚通道52沿内胆侧壁周向均匀分布。使得传热和冷凝效果都能均匀分布，实现内胆的均匀受热和冷凝。
较佳的，在本实施例中，所述汇聚通道52向上延伸的过程中，凸出高度逐渐降低。汇聚通道52逐步延伸的过程中，逐渐与网格处的内胆外表面平齐，逐步减少内胆向上方热量的传递，使得内胆外表面没有明显的高低段差，也方便对内胆外表面进行擦拭清洗。其中，凸出高度是指汇聚通道52所在处的第三金属层3相对于第二金属层2凸出的距离。
参照图1和图2，所述内胆内表面设有竖向凹槽6，所述竖向凹槽6对应所述汇聚通道52。竖向凹槽6可以增大内胆内表面的传热面积，而汇聚通道52处设置有导热液，是热量传导效果最佳的区域，可以促进将内胆的热量传递给内胆中的食材，实现高效快速的加热。
参照图3和图4，在本实施例中，所述流体通道5还包括工艺通道53，所述流体通道为通过向工艺通道53充入气体或液体形成。工艺通道53作为流体通道的一部分，其一端向下延伸连接流体通道，一端向上延伸到内胆的口部翻边上作为工艺入口54，通过工艺入口54可以充入气体或液体使得第三金属层3向外形变形成中空的流体通道5，通过工艺入口还可以进行抽真空处理后注入导热液。由于工艺入口位于口部翻边上，方便进行充入气体或液体、抽真空 或者注入导热液等工艺处理，在进行相应的工艺处理之后，可以截断工艺入口，通过焊接或者压接等方式密封工艺通道53。
本实施例内胆的制作工艺如下：
1.裁剪形成特定形状的第一金属层、第二金属层和第三金属层的片材，本实施例由内而外为不锈钢片材、铝片材、铝片材三层。裁剪片材是为了后续的复合和拉伸做准备。
2.在第二金属层和第三金属层之间设置耐温隔离层，比如耐温石墨，耐温隔离层为预设的流体通道形状。预设的流体通道形状可以通过设计并印刷到相应的金属层上，实现最终成品所出现的网格通道样式。由于两个金属层之间具有耐温隔离层，在热压复合时，预设的流体通道形状处具有耐温隔离层，所以不会被复合在一起，而在二者之间充入气体或液体后，没有复合在一起的区域就会鼓胀起来。
3.将第二金属层和第三金属层热压复合在一起形成第一复合板材，然后将第一复合板材和第一金属层复合在一起形成第二复合板材。
4.将第二复合板材拉伸成形为内胆的胆形。拉伸可以参照现有常规工艺，主要过程是将板材放在相应模具上，通过冲压拉伸而成。
5.在耐温隔离层处分离第二金属层和第三金属层而形成工艺入口。具体地，可以通过撬开其中一个金属层，或者打孔形成工艺入口。
6.在工艺入口处充入气体或液体，使得第三金属层在耐温隔离层处向外膨胀，形成第三金属层局部外凸的流体通道。为了确保充入气体或液体时，是第三金属层向外膨胀，而第二金属层不向内膨胀，一方面，设计第二金属层2的厚度大于第三金属层3的厚度，第三金属层3的强度更弱，使得第三金属层更容易发生变形，另外一方面，模具上具有相应的避让空间，让第三金属层可以向外膨胀发生形变。
7.在工艺入口处抽真空后注入导热液。在抽真空之后，流体通道内形成负压环境，导热液可以很容易的被吸入。而且流体通道内在形成真空环境之后，方便导热液受热时气化。
8.封闭工艺入口。具体来说，通过压接形成初步密封，再焊接密封。封闭工艺入口是为了避免导热液在受热时发生泄漏。
9.通过熔射形成第四金属层。第三金属层之外的第四金属层是在第三金 属层向外膨胀之后，通过熔射形成，如此设计，可以避免外侧的第四金属层对第三金属层的向外膨胀产生干扰。也就是第三金属层在向外膨胀的时候，属于内胆的最外层，所以可以不受束缚的向外膨胀，而在膨胀形变之后再熔射形成第四金属层，通过不同材质，可以实现导磁加热或者耐磨、防锈等效果。
10.内胆表面处理，比如喷涂有色涂料，比如有机硅，提升内胆美观度、耐磨、防锈性能。
本实施例的内胆，通过设置流体通道，流体通道内设有导热液，在内胆受热时，导热液可以迅速扩充到内胆的其他区域，实现内胆的快速导热，而第二金属层和第三金属层为相同材质，使得两者的结合性好，在导热液受热时不会导致第二金属层和第三金属层分离。而其内还具有第一金属层，其外具有第四金属层，可以对中间的第二金属层和第三金属层起到加强和保护作用，通过第四金属层或者第一金属层设置导磁层，可以实现内胆的电磁加热。
当然，在其他实施例中，第四金属层可以有或者没有，第一金属层可以有或者没有。而在第一金属层内，或者是第四金属层外，还可以设置保护层、耐磨层、防锈层等材料。
本发明还提出了一种烹饪器具，可以是电饭煲或者电压力锅等，包括锅体，锅体内有上述实施例的内胆。可以理解的是，烹饪器具还包括锅盖，锅体内设有加热装置，加热装置可以加热内胆，内胆中可以放置待烹饪食材。
实施例二
在实施例一的基础上，本实施例提出了另外一种内胆，其区别主要在于汇聚通道52。在本实施例中，参照图5和图6，汇聚通道52具有竖直段521和倾斜段522，所述竖直段521一端连接网格通道51，另外一端连接倾斜段522。所述内胆侧部设有把手8，把手具有贴合内胆侧壁的紧固部81，所述紧固部81具有避让空间，所述避让空间避让所述倾斜段521。汇聚通道具有竖直段521和倾斜段522，由于越到口部区域，对导热的要求越低，通过倾斜段的设置可以在有限高度范围内，增加流体通道覆盖的面积，增加产品的实用性。而通过把手的设置，方便用户取放内胆。由于汇聚通道的存在，导致把手难以固定，而本申请通过紧固部81设置避让空间82，使得倾斜段可以位于避让空间82内，解决了把手固定的难题。由于倾斜段伸入到把手的紧固部81中，而紧固部81为了减少把手晃动，会尽量紧贴内胆侧壁，通过设置避让空间82使得 倾斜段伸入到了把手的紧固部81中，把手8在上下或者左右方向上都能得到一定的限位，避免了把手的安装位置不固定。具体应用时，可以通过螺钉或者卡扣结构来固定把手，当然，螺钉或者卡扣结构的设置位置会避让汇聚通道，避免安装过程中对汇聚通道造成损害，造成导热液的泄露。为了方便把手的固定，在实际使用时可以将避让空间的形状与伸入到把手中的倾斜段的形状适配，使得倾斜段可以恰好伸入避让空间中去。
在本实施例中，紧固部具有避让空间，在其他实施例中，也可以是倾斜段具有避让空间，避让空间避让紧固部。具体来说，可以是倾斜段在向上延伸的过程中，因为可能遇到紧固部，所以具有一个中断，以形成避让空间，避免与紧固部发生干涉。也可以是，倾斜段在向上延伸过程中，其凸出的高度变得很小，以形成避让空间，避免与紧固部发生干涉。其中，倾斜段的凸出高度是指倾斜段所在处的第三金属层3相对于第二金属层2向外凸出的距离。
在本实施例中，所述倾斜段522在避让空间82内凸出的高度小于所述竖直段521凸出的高度。由于倾斜段522部分伸入避让空间82中，其凸出的高度偏低，可以方便避让空间的设置，有利于把手的牢固固定。
在本实施例中，所述倾斜段522凸出的高度在向外延伸的过程中逐步降低。
在本实施例中，所述倾斜段522的宽度在向外延伸的过程中逐步降低。倾斜段在逐步延伸的过程中，逐渐远离内胆底部，通过宽度的降低可以减少热量的传递，减少内胆口部的温升。
在本实施例中，参照图5-图7，所述网格通道51包括底壁网格通道、侧壁网格通道和弧形壁网格通道，所述底壁网格通道位于内胆底壁11，侧壁网格通道位于内胆侧壁12，弧形壁网格通道位于内胆底壁和内胆侧壁之间的弧形过渡部13。网格通道51在内胆的底壁、侧壁和弧形过渡部上均有设置，可以方便内胆的传热。内胆的侧壁的下部具有网格通道，上部具有汇聚通道52。
在本实施例中，所述内胆外表面形成有多个六边形，网格通道51形成于所述六边形之间。
在本实施例中，可参照图5和图6，所述弧形壁网格通道处的网格在高度方向的尺寸大于在宽度方向的尺寸。在本实施例中，以六边形网格为例，也就是说，弧形壁网格通道处的网格并非规则的正六边形，而是高度尺寸大于宽度 尺寸，视觉上是偏高偏瘦的。这种结构可以适配内胆制造拉伸时弧形过渡部的形变。
在本实施例中，可参照图6，所述底壁上具有测温区9，所述底壁网格通道环绕所述测温区9。借助测温装置可以贴合测温区9以对内胆进行测温。
可以理解的是，本实施例的内胆也可以应用在烹饪器具中，比如烹饪器具具有锅体，锅体内设有本实施例的内胆。需要说明的是，本实施例附图的内胆具有把手、内胆翻边上具有锅牙，在实际使用过程中，可以根据实际需要取消把手或者锅牙等结构。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，熟悉该本领域的技术人员应该明白本发明包括但不限于附图和上面具体实施方式中描述的内容。任何不偏离本发明的功能和结构原理的修改都将包括在权利要求书的范围中。

Claims (10)

  1. 一种烹饪器具的内胆，包括底壁、侧壁和口部翻边，所述内胆由内至外包括两层或两层以上的金属层，其中两个金属层之间形成流体通道，流体通道内设有导热液，其特征在于，所述流体通道包括网格通道、自网格通道向胆口部方向延伸的多条汇聚通道，所述网格通道至少覆盖侧壁的下部，所述汇聚通道的末端位于口部翻边的下方。
  2. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述流体通道向内胆外表面凸出。
  3. 如权利要求2所述的烹饪器具的内胆，其特征在于，所述汇聚通道向上延伸，沿延伸方向，所述汇聚通道的凸出高度逐渐降低。
  4. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述流体通道还包括工艺通道，所述流体通道为通过向工艺通道充入气体或液体形成。
  5. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述汇聚通道的末端与口部翻边的高度差大于20毫米。
  6. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述内胆内表面设有多个竖向凹槽，所述竖向凹槽对应所述汇聚通道。
  7. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述汇聚通道沿内胆侧壁周向均匀分布。
  8. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述内胆由内至外至少包括第一金属层、第二金属层和第三金属层，所述第二金属层和第三金属层之间形成所述流体通道。
  9. 如权利要求1所述的烹饪器具的内胆，其特征在于，所述汇聚通道具有竖直段和倾斜段，所述竖直段一端连接网格通道，另外一端连接倾斜段，所述内胆侧壁设有把手，把手具有贴合内胆侧壁的紧固部，所述紧固部具有避让空间，所述避让空间避让所述倾斜段；或者所述倾斜段具有避让空间，所述避让空间避让所述紧固部。
  10. 一种烹饪器具，包括锅体和内胆，其特征在于，所述内胆为如权利要求1所述的烹饪器具的内胆。
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