CN219125971U - Uniform heating liner - Google Patents

Abstract

The utility model provides a uniformly heated inner container, which comprises a bottom wall and side walls, wherein the inner container comprises at least 2 metal layers, a fluid channel is formed between the 2 metal layers, heat conduction liquid is arranged in the fluid channel, an inflation inlet is arranged on the inner container and used for inflating and forming the fluid channel, and a filling inlet is also arranged on the inner container and used for filling heat conduction liquid into the fluid channel. The liner can improve the reliability of products and realize the effect of uniform heating.

Description

Uniform heating liner

[ field of technology ]

The utility model relates to the technical field of kitchen appliances, in particular to a uniformly heated inner container.

[ background Art ]

In the prior art, an inner container capable of being heated uniformly is arranged, a sandwich layer is arranged on the inner container, heat conducting liquid is filled in the sandwich layer, and the heat conducting liquid can be gasified and rapidly spread to other areas of the inner container when being heated, so that uniform heating is realized. The inner container has two key steps in manufacturing, namely, the inner container is inflated to form a space for containing heat-conducting liquid, and the heat-conducting liquid is filled into the inner container, so that corresponding process inlets are needed, the process inlets in the prior art cannot take into account the inflated filling function, and the product quality is uneven, so that the inner container needs to be improved.

[ utility model ]

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a pressure cooking appliance which can improve the reliability of products.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a uniformly heated inner bag, includes diapire and lateral wall, and the inner bag includes 2 at least metal levels, wherein forms fluid channel between 2 metal levels, be equipped with the heat conduction liquid in the fluid channel, be equipped with the inflation entry on the inner bag, the inflation entry is used for the inflation to form fluid channel, still be equipped with the liquid filling entry on the inner bag, the liquid filling entry is used for filling the heat conduction liquid into fluid channel.

In an embodiment of the utility model, the inflation inlet is higher than the irrigation inlet.

In one embodiment of the utility model, the inflation inlet is located on a rim of the liner.

In an embodiment of the present utility model, the inflation inlet is formed by deforming an edge of the metal layer.

In an embodiment of the utility model, the filling inlet is located on a side wall of the liner.

In an embodiment of the utility model, the filling inlet is located at an upper end of the fluid channel.

In an embodiment of the present utility model, the liner includes at least a first metal layer, a second metal layer, and a third metal layer from inside to outside, the fluid channel is formed between the second metal layer and the third metal layer, and the thickness of the second metal layer is greater than the thickness of the third metal layer.

In one embodiment of the present utility model, the fluid channel includes a grid channel and a converging channel located above the grid channel, the converging channel being vertically disposed.

In an embodiment of the present utility model, a plurality of converging channels are provided and distributed along the circumferential direction of the liner.

In one embodiment of the utility model, the upper edge of the flanging of the liner is cut to form the pot teeth.

The utility model has the following beneficial effects:

1. according to the liner, the inflation inlet and the filling inlet are respectively arranged, so that two different working procedures of inflation and filling are realized, interference between the inflation inlet and the filling inlet is avoided, the optimal effect can be obtained, the purpose of uniformly heating the liner is achieved, and the reliable and stable product quality is ensured.

2. According to the liner disclosed by the utility model, the inflation inlet is higher than the filling inlet, and the inflation is used for forming a fluid channel, so that the filling inlet is formed after inflation, the inflation inlet is higher, and the filled heat conduction liquid can be prevented from flowing out of the inflation inlet.

3. In the liner of the utility model, the inflation inlet is positioned on the turnup of the liner. When carrying out the inflation technology, in order to ensure the uniformity of inner bag fluid channel evagination, can set up two mould frock centre gripping fixed inner bags, and the turn-ups of inner bag are the position of two mould frock separation for the simple structure of mould frock is through setting up the inflation entry on the inner bag turn-ups. The side wall or other areas of the liner are provided with inflation inlets, so that the die tooling is required to be provided with a special area avoiding the inflation inlets, and the manufacturing process is complex.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with reference to the accompanying drawings:

fig. 1 is a schematic view of a pressure cooking apparatus according to a first embodiment of the present utility model;

fig. 2 is a sectional view of a pressure cooking appliance according to a first embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of a first liner according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a liner according to a first embodiment of the present utility model.

Reference numerals:

the pot comprises a pot body 1, a pot cover 2, a cover tooth 21, an inner cover 22, an inner container 3, a pot tooth 31, a blowing inlet 32, a filling inlet 33, a fluid channel 4, a grid channel 41 and a converging channel 42.

[ detailed description ] of the utility model

The utility model provides a uniformly heated inner container, which comprises a bottom wall and side walls, wherein the inner container comprises at least 2 metal layers, a fluid channel is formed between the 2 metal layers, heat conduction liquid is arranged in the fluid channel, an inflation inlet is arranged on the inner container and used for inflating and forming the fluid channel, and a filling inlet is also arranged on the inner container and used for filling heat conduction liquid into the fluid channel. The liner can improve the reliability of products and realize the effect of uniform heating.

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

Example 1

Referring to fig. 1-3, the embodiment provides a pressure cooking appliance, which comprises a pot body 1 and a pot cover 2, wherein an inner container 3 is arranged in the pot body, the inner container 3 is used for placing food, it can be understood that a heating device for heating the inner container is also arranged in the pot body, the heating device can be a heating disc or an electromagnetic wire coil, the pot cover 2 is provided with a locking cover with a cover tooth 21, the inner container 3 is provided with a pot tooth 31, and the cover tooth 21 and the pot tooth 31 are matched to realize locking and unlocking of the pot cover and the inner container. When the pressure cooking appliance is used for pressure cooking, a certain pressure environment is formed, specifically, the pressure of 50-100kPa can be achieved, and even the pressure is possibly more than 100kPa, so that the pressure cooking appliance needs to be provided with a pressure bearing structure. The pressure-bearing structure of the embodiment is that the cover teeth 21 on the lock cover and the pan teeth 31 on the liner 3 are metal pieces, the cover teeth 21 and the pan teeth 31 have good strength, and pressure bearing is realized through engagement of the cover teeth 21 and the pan teeth 31. When the cooker cover is specifically used, the locking and unlocking of the cover teeth 21 and the cooker teeth 31 can be realized by rotating the lock cover, when the cover teeth 21 and the cooker teeth 31 are locked, pressure cooking can be performed to achieve a high-pressure environment, and when the cover teeth 21 and the cooker teeth 31 are unlocked, the cooker cover 2 can be opened.

In this embodiment, the cooker cover further comprises an inner cover 22, the inner cover covers the sealing inner container 3, and the cover teeth clamp the edge of the inner cover 22 and the inner container teeth. It can be understood that the inner cover 22 is provided with a sealing ring for a gap between the rice inner cover 22 and the inner container 3, so that a cooking space is formed between the inner cover 22 and the inner container 3, and the cover teeth 21 are clamped between the edge of the inner cover 22 and the pot teeth of the inner container, so as to prevent the inner cover 22 and the inner container 3 from being separated.

The specific structure of the liner will be described later, the liner of this embodiment includes a bottom wall and a side wall, and is composed of multiple metal layers, where the liner includes at least a first metal layer, a second metal layer, a third metal layer and a fourth metal layer from inside to outside, a fluid channel 4 is formed between the second metal layer and the third metal layer, a heat-conducting liquid is disposed in the fluid channel 4, and the fourth metal layer or the first metal layer is a magnetically conductive layer. Through forming fluid channel 4 between second metal level and the third metal level, set up the heat conduction liquid in fluid channel 4, when the inner bag is heated, the heat conduction liquid can expand to other regions of inner bag rapidly, realizes the quick heat conduction of inner bag, and better, second metal level and third metal level are the same material for both's cohesiveness is good, can not lead to second metal level and third metal level separation when the heat conduction liquid is heated. The fluid channel is also internally provided with a first metal layer, the outside of the fluid channel is provided with a fourth metal layer, the second metal layer and the third metal layer in the middle can be reinforced and protected, and electromagnetic heating of the liner can be realized by arranging a magnetic conduction layer on the fourth metal layer or the first metal layer. Of course, the fourth metal layer may or may not be present, and the first metal layer may or may not be present. For example, the heat conducting device can only be provided with the second metal layer and the third metal layer, or only be provided with the first metal layer, the second metal layer and the third metal layer, or only be provided with the second metal layer, the third metal layer and the fourth metal layer, so that the fluid channel can be formed and the heat conducting liquid is arranged, and the rapid heat conduction of the inner container can be realized.

In this embodiment, the outer surface of the liner has a convex fluid channel 4, and a heat-conducting liquid is disposed in the fluid channel 4, and the fluid channel is located below the pan teeth 31. And the heat conducting liquid is arranged in the fluid channel 4, so that when the inner container is heated, the heat conducting liquid can be rapidly expanded to other areas of the inner container, the rapid heat conduction of the inner container is realized, and the inner container is ensured to be heated uniformly. The fluid channel 4 is located below the pan teeth 31, and the existence of the fluid channel 4 does not affect the pressure bearing of the pan teeth 31, so that the uniform heating and the pressure bearing are realized. Therefore, even in high-pressure cooking, the pressure-bearing force is shared by the pot teeth 31, so that the fluid channel 4 cannot deform to cause leakage of heat-conducting liquid, and the safety of products is improved.

The heat transfer fluid may be a refrigerant, such as freon, or other heat superconducting fluids, such as those used in radiators. The principle of rapid heat conduction of the heat conduction liquid is similar to that of a thermosiphon, a heat pipe and the like. When heated, the heat conducting liquid can be quickly vaporized and quickly spread to other areas of the fluid channel 4, and meanwhile, heat is quickly transferred to other areas of the liner, so that the liner is uniformly heated. In a specific manufacturing process, the heat conducting liquid is injected into the fluid channel 4 after a certain vacuum environment is formed in the fluid channel.

In this embodiment, referring to fig. 4 and 5, the fluid channel 4 includes a mesh channel 41 and a converging channel 42 above the mesh channel, where the converging channel 42 is vertically disposed, and the converging channel 42 communicates with the mesh channel 41. The grid channels 41 are distributed on the inner container like grids of the fluid channel 4, the grids can be triangular, quadrilateral, pentagonal, hexagonal, heptagonal, octagonal and the like, the grids are similar to the hexagonal grids in the drawing, the fluid channel 4 is formed by protruding on six sides of the hexagon, the heat conduction liquid is located in the fluid channel, namely, the separated position of the multiple metal layers of the inner container, a hollow fluid channel is formed, the area in the middle of the hexagon is flat (namely, no protruding), namely, the combined position of the multiple metal layers of the inner container is formed, the two are combined together through hot pressing, and the structure can effectively ensure the integral strength of the inner container. In this embodiment, a converging channel 42 is further disposed above the grid channel 41, and the heat-conducting liquid in the fluid channel 4 flows upward after being heated and gasified, and finally converges on the converging channel to be condensed and flows back to the lower side, so that the heat transfer area of the heat-conducting liquid in the liner is finally enlarged. The existence of the converging channel 42 can give consideration to heat transfer above the liner, ensures uniform heating of the side wall of the liner, changes the area above the side wall of the liner into a converging channel from a grid channel, reduces heat transfer of mouth pot teeth, gives consideration to heat transfer above the liner, and when the heat transfer device is specifically applied, heat conducting liquid is heated and gasified by the lower heating device to rapidly fill the fluid channel of the liner, one end of the heat conducting liquid is converged upwards into the converging channel, the converging channel prevents continuous movement of gasified heat conducting liquid, the temperature is also transferred to the liner body while gasification, the heat conducting liquid in the converging channel can be liquefied and condensed after converging enough heat conducting liquid, and the converging channel extends upwards and can flow back after condensation, and the heat conducting liquid is circulated and reciprocated in the way. The existence of the grid channel 41 can improve the intensity of the heat conduction liquid-filled inner container, the staggered grids can realize large-area distribution of the heat conduction liquid, for the inner container, the bottom is a heating device, the heating device can transfer heat to other areas of the inner container after heating the inner container, and the inner container is used for placing food materials for cooking, and the area close to the mouth has no requirement on heating below the inner container and is high in bottom, so that the converging channel is arranged on the upper part of the inner container, and the heat transfer effect and the application convenience of the inner container are considered. In this embodiment, the converging channel is arranged above the inner container grid channel, so that heat transfer at the upper part of the inner container can be considered, overhigh temperature can not be caused, and the converging and condensing effects are achieved.

In this embodiment, referring to fig. 4 and 5, a plurality of converging channels 42 are provided and are uniformly distributed along the circumferential direction of the sidewall of the liner. The heat transfer and condensation effects can be uniformly distributed, and the uniform heating and condensation of the liner are realized.

In this embodiment, the bottom wall or/and the side wall of the liner 3 is partially and convexly formed with a fluid channel 4, the liner has a first thickness at the fluid channel and a second thickness outside the fluid channel, and the thickness of the pan teeth is greater than the second thickness. Specifically, the first thickness of the fluid channel is the thickness of the six sides of the hexagon, the second thickness of the fluid channel is the thickness of the area outside the hexagon, and in this embodiment, the thickness of the teeth 31 is greater than the second thickness, because the second thickness is the thickness of the liner in the normal state, and the thickness of the teeth 31 is larger, that is, the strength of the liner at the teeth 31 is higher, so that the teeth 31 can be conveniently locked and pressed by matching with the teeth. In this embodiment, the thickness of the pan teeth 31 is smaller than the first thickness, so that the overall thickness of the outer surface of the liner is between the first thickness and the second thickness, thereby facilitating smooth transition of the thickness.

In this embodiment, the liner is provided with an inflation inlet 32, the inflation inlet 32 is used for inflation to form a fluid channel, the liner is further provided with a filling inlet 33, and the filling inlet 33 is used for filling heat-conducting liquid into the fluid channel. Through setting up respectively and blow up entry and filling entry, realize these two different processes of inflation and filling for both can not take place to disturb, can both obtain best effect, reach the purpose of the even heating of inner bag, ensure that the product quality is reliable stable.

In this embodiment, the inflation inlet 32 is higher than the irrigation inlet 33. Since the inflation serves to form the fluid channel 4 and after inflation the filling inlet is formed, the inflation inlet is higher, so that the filled heat-conducting liquid can be prevented from flowing out of the inflation inlet.

In this embodiment, the inflation inlet 32 is located on the rim of the liner. When carrying out the inflation technology, in order to ensure the uniformity of inner bag fluid channel evagination, can set up two mould frock centre gripping fixed inner bags, and the turn-ups of inner bag are the position of two mould frock separation for the simple structure of mould frock is through setting up the inflation entry on the inner bag turn-ups. The side wall or other areas of the liner are provided with inflation inlets, so that the die tooling is required to be provided with a special area avoiding the inflation inlets, and the manufacturing process is complex.

In this embodiment, the inflation inlet 32 is formed by deforming the edge of the metal layer. In particular fabrication, the blow-up inlet 32 may be formed by prying open the edges of the metal layers that are composited together.

In this embodiment, the filling inlet 33 is located on the sidewall of the liner. The irrigation inlet 33 may be formed by punching, facilitating manufacture and formation.

In this embodiment, the filling inlet 33 is located at the upper end of the fluid channel. The heat conduction liquid is filled into the fluid channel through the filling inlet, and the filling inlet is positioned at the upper end of the fluid channel, so that the heat conduction liquid can be prevented from overflowing.

In this embodiment, the rim of the inner container is cut to form a pan tooth 31. The cooker teeth 31 can be used in a pressure cooker. Of course, in other embodiments, no teeth may be provided.

The following describes the manufacturing process of the liner according to the present embodiment, which is as follows:

1. the sheet materials of the first metal layer, the second metal layer and the third metal layer which are formed into specific shapes are cut, and the embodiment is formed by three layers of stainless steel sheet materials, aluminum sheet materials and aluminum sheet materials from inside to outside. The sheet is cut in preparation for subsequent compounding and stretching.

2. And a temperature-resistant isolation layer, such as temperature-resistant graphite, is arranged between the second metal layer and the third metal layer, and the temperature-resistant isolation layer is in a preset fluid channel shape. The preset fluid channel shape can be designed and printed on the corresponding metal layer to realize the grid channel pattern of the final finished product. The heat-resistant isolation layer is arranged between the two metal layers, and the heat-resistant isolation layer is arranged at the position of the preset fluid channel shape in the hot press compounding process, so that the two metal layers cannot be compounded together, and after gas or liquid is filled between the two metal layers, the area without being compounded together is inflated.

3. And hot-pressing and compounding the second metal layer and the third metal layer together to form a first composite board, and then compounding the first composite board and the first metal layer together to form a second composite board.

4. And stretching the second composite board to form a liner shape of the liner. The stretching can be achieved by referring to the conventional process, and the main process is that the plate is placed on a corresponding die and is formed by stamping and stretching.

5. And separating out an inflation inlet at the temperature-resistant isolation layer. Preferably, the inflation inlet is formed on the liner flange by prying open one of the metal layers. When carrying out the inflation technology, in order to ensure the uniformity of inner bag fluid channel evagination, can set up two mould frock centre gripping fixed inner bags, and the turn-ups of inner bag are the position of two mould frock separation for the simple structure of mould frock is through setting up the inflation entry on the inner bag turn-ups. The side wall or other areas of the liner are provided with inflation inlets, so that the die tooling is required to be provided with a special area avoiding the inflation inlets, and the manufacturing process is complex.

6. And (3) filling gas or liquid into the inflation inlet, so that the third metal layer is expanded outwards at the temperature-resistant isolation layer to form a fluid channel with the third metal layer protruding outwards partially. In order to ensure that the third metal layer expands outwards when gas or liquid is filled, the second metal layer does not expand inwards, on one hand, the thickness of the second metal layer is designed to be larger than that of the third metal layer, the strength of the third metal layer is weaker, the third metal layer is easier to deform, and on the other hand, a corresponding avoiding space is formed in the die, so that the third metal layer can expand outwards to deform.

7. And trimming on the flanging of the inner container to form the pot teeth. Specifically, the inner container is turned up to be cut at the positions of the teeth or not, and is cut at the positions of the gaps between the adjacent teeth so as to form a plurality of teeth which are distributed at intervals in the embodiment. In this embodiment, the inflation inlet is located on the inner container flanging, and when forming the pot tooth through the side cut, the inflation inlet on the flanging can be sealed. The preliminary seal may be formed by crimping and then welding the seal.

8. And forming a liquid filling inlet on the liner, vacuumizing through the liquid filling inlet, and then injecting heat conducting liquid. During specific manufacturing, a liquid filling inlet can be formed by punching on the side wall of the inner container, after vacuumizing is carried out through the liquid filling inlet, a negative pressure environment is formed in the fluid channel, and heat conduction liquid can be easily sucked. And the fluid channel is internally provided with a vacuum environment, so that the heat conducting liquid is convenient to gasify when being heated. The filling inlet can be arranged at the upper end of the fluid channel on the side wall of the inner container. The height of the filling inlet is lower than that of the inflation inlet, and the filling inlet is arranged on the side wall of the liner instead of the liner flanging, and the reason is that the liner side wall can outwards turn over to form the liner flanging after upwards extending, so that the stress at the joint of the upper end of the liner side wall and the liner flanging is overlarge, a through channel is difficult to form, and particularly, vacuumizing treatment is carried out before filling, so that the liner is easy to collapse and close, and subsequent filling is hindered.

9. Closing the liquid filling inlet. Specifically, the preliminary seal is formed by crimping, and then the seal is welded. The process inlet is closed to avoid leakage of the heat transfer fluid when heated.

10. The fourth metal layer is formed by meltallizing. The fourth metal layer outside the third metal layer is formed by means of melt-jetting after the third metal layer expands outwards, so that the interference of the fourth metal layer outside on the expansion outwards of the third metal layer can be avoided. That is, the third metal layer is the outermost layer of the liner when expanding outwards, so that the liner can expand outwards without being bound, and the fourth metal layer is formed by means of meltdown injection after expansion deformation, and effects of magnetic conduction heating or wear resistance, rust prevention and the like can be achieved through different materials.

11. The surface treatment of the liner, such as spraying a colored coating, such as organic silicon, improves the attractiveness, wear resistance and rust resistance of the liner.

It can be understood that in this embodiment, the tooth cutting procedure in the step 7 is omitted when the inner container with the teeth is required to be manufactured. Namely, step 7 is changed into mouth shaping, redundant materials are removed through the mouth shaping, gaps among the pot teeth are formed by cutting in a process of the inner container with the pot teeth, the mouth shaping is performed to form a regular inner container flanging, and an inflation inlet on the flanging can be sealed while the mouth shaping is performed.

In this embodiment, the area where the second metal layer and the third metal layer are compositely connected together is a heated area in the grid. The region where the second metal layer and the third metal layer are separated by being filled with gas or liquid is the fluid passage 4. The fluid channel is formed by the outward expansion and is obviously convex relative to the heated area.

Of course, in other embodiments, the fourth metal layer may or may not be present and the first metal layer may or may not be present. And a protective layer, a wear-resistant layer, a rust-proof layer and other materials can be arranged outside the first metal layer or the fourth metal layer.

While the utility model has been described in terms of embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a uniformly heated inner bag, includes diapire and lateral wall, and the inner bag includes 2 at least metal levels, its characterized in that, forms fluid passage between 2 metal levels wherein, be equipped with the heat conduction liquid in the fluid passage, be equipped with the inflation entry on the inner bag, the inflation entry is used for the inflation to form fluid passage, still be equipped with the filling entry on the inner bag, the filling entry is used for filling the heat conduction liquid to the fluid passage in.

2. The uniformly heated liner of claim 1 wherein the inflation inlet is higher than the pour inlet.

3. The uniformly heated liner of claim 1 wherein the inflation inlet is located on a rim of the liner.

4. A uniformly heated liner according to claim 3 wherein the inflation inlet is formed by deformation of the edges of the metal layer.

5. The uniformly heated liner of claim 1 wherein the pour inlet is located on a sidewall of the liner.

6. The uniformly heated liner of claim 5 wherein the fill inlet is located at an upper end of the fluid passageway.

7. The uniformly heated liner of claim 1, wherein the liner comprises, from inside to outside, at least a first metal layer, a second metal layer, and a third metal layer, the fluid passage being formed between the second metal layer and the third metal layer, the second metal layer having a thickness greater than a thickness of the third metal layer.

8. The uniformly heated bladder of claim 1 wherein said fluid passages comprise a grid passage and a converging passage positioned above the grid passage, said converging passage being vertically disposed.

9. The uniformly heated liner of claim 8 wherein a plurality of converging passages are provided and are circumferentially distributed about the liner.

10. The uniformly heated liner of claim 1 wherein the rim of the liner is trimmed to form a pan.

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