Honeycomb-shaped inner container structure of rice crust rice electric cooker

Abstract

The utility model discloses a honeycomb-shaped rice crust rice cooker inner container structure which comprises an inner container pot body, an inner container pot face and an overflow tank body, the inner container pot body is covered and sealed by the inner container pot face to form a heat conduction oil cavity, regular hexagon cone-shaped barrel grooves which are evenly distributed and concave towards the heat conduction oil cavity are formed in the inner container pot face, and the overflow tank body is located over the inner container pot body. An overflow opening and a backflow opening are formed in the center of the pot face of the inner container, an overflow pipe is led into the overflow opening to the top in the overflow tank body, and the backflow opening is connected to a center hole in the bottom of the overflow tank body through a backflow pipe. According to the utility model, the overflow structure in the prior art is vertically arranged above the inner container pot body instead of being horizontally arranged on the side surface of the inner container pot body, the overflow port is changed from the upper part of the side wall of the pot body to the central point of the pot surface, and the overflow mode is changed from normal-pressure automatic overflow to high-pressure passive pressure flow, so that the structural safety and the operation convenience are improved. Meanwhile, the heat-conducting oil cavity of the inner container pot body is filled with the energy-saving hollow round balls, so that the filling amount of the heat-conducting oil is small, and the purpose of improving energy conservation is achieved.

Description

Technical Field

[0001] The utility model relates to an inner pot of an electric rice cooker, in particular to an inner pot structure of a honeycomb-shaped rice crust rice electric rice cooker. Background Art

[0002] The utility model patent with Chinese patent publication number CN 208822327 U and titled “A honeycomb-shaped rice crust rice cooker inner structure” disclosed a honeycomb-shaped rice crust rice cooker inner structure. In actual use, the inner structure of the rice crust rice cooker exposed some design defects and was difficult to meet the needs of actual use. Specifically, the defects include the following:

[0003] 1. When a pot of rice crust is ready, before it is time to serve, the prepared cylindrical rice crust is stored in the honeycomb inner cavity of the pot body. At this time, the temperature of the high-temperature heat-conducting oil in the interlayer of the pot body cannot be lowered immediately. In this way, the high-temperature heat-conducting oil continues to bake and heat, resulting in the complete drying of the moisture in the cylindrical rice crust, and the outer layer of rice crust is too burnt and too hard, which makes it difficult for diners to chew and inconvenient to eat. There are two ways to solve this problem: the first way is to take the prepared cylindrical rice crust out of the inner pot, so that the rice crust will cool naturally quickly and lose its crispy taste, affecting the consumption. It needs to be heated again before serving, which is troublesome and unhygienic. The second way is to extract the high-temperature heat-conducting oil in the interlayer of the pot body in time. The aforementioned prior art has defects in the extraction of heat-conducting oil, which makes this method troublesome to operate and very easy to cause scalding accidents. There are certain safety hazards and the convenience of use and operation is not good.

[0004] 2. The overflow tank of the aforementioned prior art is horizontally arranged on one side of the inner tank structure of the pot body, and the reflux method is natural overflow, which causes the liquid below the height of the reflux hole to be unable to reflux naturally, resulting in a large amount of high-temperature liquid remaining in the inner tank structure of the pot body. The high-temperature liquid cools very slowly, causing the rice crust in the pot body to be over-baked, too burnt and crispy, and too hard, making it difficult for diners to chew, affecting the comfort of eating rice crust rice. Therefore, it is necessary to extract the heat-conducting liquid from the inner tank of the pot body in time. The aforementioned prior art cannot smoothly and safely extract the heat-conducting oil in a high-temperature state into the overflow tank. When heat-conducting oil needs to be added in the next pot production, it is also inconvenient to add the high-temperature heat-conducting oil in the overflow tank to the oil storage cavity of the pot body.

[0005] 3. In the above-mentioned prior art, too much heat transfer oil is added, the temperature rises slowly, takes a long time, and the energy-saving performance is not perfect. Therefore, it is necessary to improve the overflow device to meet the needs of timely and convenient extraction and replenishment of high-temperature heat transfer fluid, and improve the convenience and safety of the design.

[0006] 4. The overflow tank of the prior art is placed horizontally on the same plane as the inner oil storage chamber of the pot body. The overflow method is gravity overflow under normal pressure. When the overflowed high-temperature heat transfer oil is added back into the oil storage chamber of the pot body, it can only be filled manually, which is very dangerous. The oil is in a high temperature state of 100-250 degrees, and it is very easy for the high-temperature oil to splash and cause scalding accidents.

[0007] 5. The overflow method of the prior art adopts the liquid gravity flow under normal pressure. The heat transfer oil below the overflow port cannot overflow by gravity, which cannot meet the requirements of actual use.

[0008] 6. The overflowed oil absorbs a large amount of heat energy and cools naturally in the overflow tank. Part of the heat energy is wasted, resulting in low thermal efficiency. The scalding overflow tank can easily burn the operator's limbs when it touches the tank unconsciously.

[0009] 7. The horizontally placed overflow tank can only be placed outside the insulation outer shell of the rice cooker. The structure is loose, which not only takes up the space of the operating table, but also damages the insulation effect of the insulation jacket.

[0010] 8. In the above-mentioned prior art, the entire space inside the heat transfer oil storage cavity is filled with heat transfer oil alone, resulting in a large amount of heat transfer oil, a slow heating speed during production, a long time consumption, and poor energy-saving performance.

[0011] Therefore, developing a honeycomb-shaped rice crust rice cooker liner structure has become a problem urgently to be solved by those skilled in the art. Utility Model Content

[0012] The utility model is to solve the above-mentioned shortcomings and provides a honeycomb-shaped rice crust rice electric rice cooker inner pot structure.

[0013] The above-mentioned purpose of the utility model is achieved through the following technical scheme: a honeycomb-shaped rice-crust rice electric rice cooker inner pot structure, comprising an inner pot body and an inner pot surface, the inner pot surface covers and seals the inner pot body to form a heat transfer oil cavity, the inner pot surface is provided with regular hexagonal conical cylindrical grooves that are evenly distributed and concave toward the heat transfer oil cavity, the conical cylindrical grooves are arranged and distributed in a honeycomb shape as a whole, the open ends of the conical cylindrical grooves are flush with the inner pot surface, the honeycomb-shaped rice-crust rice electric rice cooker inner pot structure also includes an overflow tank body, the overflow tank body is located directly above the inner pot body and maintains a certain spatial distance from the pot surface; an overflow port and a reflux port are provided at the center of the inner pot surface, an overflow pipe is connected to the overflow port, the lower end of the overflow pipe extends to the lower part of the heat transfer oil cavity, the upper end of the overflow pipe passes through the bottom of the overflow tank body and extends to the top of the overflow tank body, and the reflux port is connected to the center hole at the bottom of the overflow tank body through a reflux pipe.

[0014] Furthermore, the overflow tank body is a closed hemispherical structure.

[0015] Furthermore, a third valve communicating with the heat transfer oil chamber is provided on the surface of the inner pot.

[0016] Furthermore, a detection hole is provided on the edge of the inner pot surface, a temperature controller is provided at the detection hole, and a detection needle of the temperature controller extends into the heat transfer oil cavity.

[0017] Furthermore, the overflow pipe and the return pipe are respectively provided with a first valve and a second valve.

[0018] Furthermore, an S-shaped winding structure is provided in the middle of the overflow pipe and the return pipe.

[0019] Furthermore, the lower end of the overflow pipe extends into the heat transfer oil cavity which is 0.2-0.3 mm below the bottom of the conical barrel groove.

[0020] Furthermore, the heat transfer oil cavity is filled with fully sealed hollow metal balls of different diameters.

[0021] Furthermore, the hollow metal ball is welded and fixed to the side wall of the heat transfer oil chamber so as to fix it.

[0022] Furthermore, a thermal insulation layer is provided outside the overflow tank.

[0023] The utility model changes the overflow structure of the prior art from being horizontally placed on the side of the inner pot body to being vertically placed above the inner pot body, and changes the overflow port from the upper part of the pot body side wall to the center point of the pot surface, and changes the overflow mode from normal pressure automatic overflow to high pressure passive pressure flow, thereby improving its structural safety and operational convenience. At the same time, energy-saving hollow spheres are filled in the heat transfer oil cavity of the inner pot body, thereby reducing the amount of heat transfer oil added and achieving the purpose of improving energy saving.

[0024] The advantages of the utility model compared with the prior art are:

[0025] 1. The overflow tank is placed on the top of the inner pot instead of horizontally on the side of the inner pot, and the overflow port is moved from the side wall of the pot to the center of the pot surface. When adding thermal fluid back to the inner pot, you only need to open the valve for self-flow filling. This is simple, convenient and safe, and avoids scalding accidents caused by splashing of high-temperature thermal oil when adding high-temperature oil manually. At the same time, the product structure is more compact, which can save space on the operating table, facilitate operation, and ensure the stability of the center of gravity of the pot.

[0026] 2. Change the overflow mode from self-flow under normal pressure to pressure flow under high temperature and high pressure. When the temperature inside the pot reaches about 130 degrees, close the valve of the return injection pipe and open the first valve on the high-pressure overflow pipe. As the temperature of the heat transfer oil inside the inner pot increases, the pressure also increases, the volume of the heat transfer oil expands, and the excess heat transfer oil is pressed into the overflow tank under the action of the internal pressure. At the same time, the internal pressure of the inner pot can be increased to about 1.5Mpa, thereby increasing the boiling point of the heat transfer oil, and increasing the boiling point of the oil from 250 degrees to about 280 degrees, which can significantly reduce the generation and overflow of oil smoke, and increase the boiling point of the oil from 250 degrees to about 280 degrees, which can effectively save electricity and improve the efficiency of thermal energy utilization.

[0027] 3. Filling the small unit of the chamber where the heat transfer oil is added to the inner pot with hollow fully sealed spherical metal balls of different diameters can effectively reduce the amount of heat transfer oil used, which can not only achieve the purpose of filling the chamber with oil to effectively transfer heat, but also significantly reduce the amount of heat transfer oil added. Under the premise of the same material, compared with the solid sphere, the fully sealed hollow sphere absorbs and occupies much less heat energy, thereby achieving the effect of reducing electricity consumption and saving energy. Under the condition that the heater power remains unchanged, after filling with energy-saving hollow spherical metal balls, the heating speed can be significantly accelerated and the time required for heating can be shortened, thereby indirectly improving production efficiency.

[0028] 4. Two side-standing "S"-shaped high-temperature and high-pressure resistant metal hollow tubes are set in the middle of the overflow pipe and the return pipe. When the valve is opened, it can effectively reduce the air pollution caused by the overflow of oily gas.

[0029] 5. The entire concave hemispherical overflow tank has the largest volume under the same size conditions, which is also convenient for adding heat transfer oil to the boiler interlayer. You only need to open the valve on the return pipe to quickly and cleanly let the liquid in the overflow cavity flow automatically into the boiler interlayer chamber. The tank is wrapped with a layer of heat-insulating material. It can reduce the heat loss of high-temperature oil in the tank, prevent the human body from being scalded by contact with the tank during operation, and improve the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a top view of the inner pot body and the inner pot surface of the utility model. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0033] like Figure 1 , Figure 2As shown, a honeycomb-shaped rice-crust rice cooker inner pot structure includes an inner pot body 1, an inner pot surface 2 and an overflow tank body 3. The overflow tank body 3 is a closed hemispherical structure and is located directly above the inner pot body 1. A heat preservation and heat insulation layer (not shown in the figure) is arranged outside the overflow tank body 3. A fourth valve 16 (vent) is arranged on the top of the overflow tank body 3. The inner pot surface 2 covers and seals the inner pot body 1 to form a heat transfer oil chamber 4. The heat transfer oil chamber 4 is filled with fully sealed hollow metal balls 18 of different diameters. The hollow metal balls 18 are welded and fixed to the side wall of the heat transfer oil chamber 4 to fix it. The inner pot surface 2 is provided with regular hexagonal conical cylindrical grooves 5 which are evenly distributed and concave toward the heat transfer oil cavity 4. The conical cylindrical grooves 5 are arranged and distributed in a honeycomb shape as a whole. The open end of the conical cylindrical grooves 5 is flush with the inner pot surface 2. The inner pot surface 2 is provided with a third valve 6 which is in communication with the heat transfer oil cavity and is used for the initial filling of the heat transfer oil and also as an external force pressurizing hole; a detection hole 7 and a pressure hole 17 are provided on the edge of the inner pot surface 2, and a temperature controller 8 and a pressure gauge (not shown in the figure) are respectively installed at the detection hole 7 and the pressure hole 17, and the detection needle of the temperature controller 8 extends into the heat transfer oil cavity 4; an overflow is provided at the center of the inner pot surface 2 The overflow port 9 and the reflux port 10, the overflow port 9 leads to an overflow pipe 11, the lower end of the overflow pipe 11 extends to the heat transfer oil cavity 0.2-0.3 mm below the bottom of the conical cylinder groove 5, the reflux port 10 is connected to the bottom center hole of the overflow tank body 3 through a reflux pipe 12, the upper end of the reflux pipe 12 is flush with the bottom center hole of the overflow tank body 3, the overflow pipe 11 passes through the bottom of the overflow tank body 3 and extends to the top of the overflow tank body 3, the overflow pipe 11 and the reflux pipe 12 are respectively provided with a first valve 13 and a second valve 14, and at the same time, the overflow pipe 11 and the reflux pipe 12 are provided with an S-shaped detour structure 15 in the middle.

[0034] The operation process of the utility model is as follows:

[0035] S1: Normal pressure heating mode stage: add enough heat transfer oil into the heat transfer oil chamber, open the first valve on the overflow pipe and the second valve on the return pipe, heat at normal pressure until the temperature of the heat transfer oil rises to about 130-140 degrees and the heat transfer oil reaches the smoke point, then close the first valve and the second valve to start the closed high pressure heating mode.

[0036] S2: High-pressure heating mode: As the temperature inside the inner pot continues to rise, the pressure in the heat transfer oil cavity continues to increase. As the pressure increases, the boiling point of the heat transfer oil increases. Under the action of its own internal pressure, part of the oil is passively pressed along the overflow pipe to the overflow tank at the top for storage.

[0037] S3: Insulation and cooling mode stage: When the temperature of the heat transfer liquid in the pot rises to about 230-240 degrees, the outer layer of the cylindrical rice crust has become golden and crispy, and most of the heat transfer oil is pressed into the overflow tank. Below the height of the lower inlet of the overflow pipe, a small amount of heat transfer oil remains, which keeps the pot warm and prevents the cooked rice crust from cooling and hardening.

[0038] S4: Enter the next round of production stage: When the cylindrical rice crust in the pot is taken out and served on the table, the second valve on the reflux pipe can be opened to allow the heat transfer oil in the overflow tank to automatically flow back to the heat transfer oil chamber, starting the next round of production process, and repeating this cycle.

[0039] Specifically, compared with the prior art, the present invention has the following excellent features:

[0040] 1. Add a top-mounted hemispherical overflow tank, and the volume of the overflow tank should be equal to the volume of the heat transfer oil added to the heat transfer oil chamber.

[0041] 2. An S-shaped winding structure is set up in the overflow pipe and the return pipe to reduce the overflow of oily smoke gas during heating and overflow.

[0042] 3. Move the original overflow port from the side wall of the pot body to the center of the pot surface, and extend the overflow pipe in both upward and downward directions based on the original overflow pipe, extending it downward to the heat transfer oil cavity 0.2-0.3 mm below the bottom of the conical tube groove 5, not too high or too low; extend it upward to the top of the inner cavity of the overflow tank body, and be provided with an inverted J-shaped overflow pipe port, and the top is against the top of the overflow tank body.

[0043] 4. The overflow tank is in the shape of a hemisphere with a spherical bottom. The return pipe is connected to the center hole at the bottom of the overflow tank, which facilitates the complete return of the oil into the inner pot structure to avoid residual high-temperature heat transfer liquid and achieve maximum energy saving effect.

[0044] 5. The overflow pipe is set differently from the return pipe. The height of the overflow pipe must exceed the maximum height of the liquid level in the overflow tank in order to give full play to the overflow effect. If the height of the overflow pipe is the same as that of the return pipe, the liquid in the overflow tank will generate a certain pressure and pressure, which will produce a certain "reverse downward pressure" force in the overflow pipe, hindering the liquid in the thermal oil cavity from flowing upward into the overflow tank. It will also increase the pressure and pressure value of the inner tank structure, bringing certain safety hazards. The height of the overflow pipe must exceed the liquid level in the overflow tank, which is equivalent to completely separating the liquid in the overflow tank from the liquid in the pot oil storage (cavity) tank. The overflow pipe is subjected to less pressure and pressure, which is more conducive to the liquid flowing into the overflow tank, and the overflow effect is better.

[0045] 6. A heat-insulating layer is provided on the outside of the overflow tank, which can effectively prevent the operator from being scalded when unconsciously touching the overflow tank, and can also prevent the heat loss of the overflow tank liquid, thereby achieving energy saving.

[0046] 7. Fill the heat transfer oil chamber tank with hollow fully sealed spherical metal balls of different diameters (the hollow balls must be welded and fixed to the pot body with fine metal wires). While meeting the heat transfer needs, it can effectively reduce the amount of heat transfer oil used, which can not only allow the oil to fill the chamber for effective heat transfer, but also significantly reduce the amount of heat transfer oil used. Compared with solid balls, sealed hollow balls absorb and occupy less heat energy, thereby achieving the effect of saving electricity and energy. Under the condition that the heater power remains unchanged, after filling with energy-saving hollow spherical metal balls, the heating speed can be significantly accelerated, the time required for heating can be shortened, and thus indirectly improve production efficiency.

[0047] 8. The top of the overflow tank is a sealed structure, but a vent hole (the fourth valve) is left to facilitate the liquid in the overflow tank to flow back to the inner tank under normal pressure.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A honeycomb-shaped rice-crust rice cooker inner pot structure, comprising an inner pot body and an inner pot surface, wherein the inner pot surface covers and seals the inner pot body to form a heat transfer oil cavity, wherein the inner pot surface is provided with evenly distributed regular hexagonal conical cylindrical grooves that are concave toward the heat transfer oil cavity, wherein the conical cylindrical grooves are arranged and distributed in a honeycomb shape as a whole, and the open ends of the conical cylindrical grooves are flush with the inner pot surface, and wherein: The honeycomb-shaped rice crust rice cooker inner pot structure also includes an overflow tank body, which is located directly above the inner pot body; an overflow port and a reflux port are provided at the center of the inner pot surface, an overflow pipe is connected to the overflow port, the lower end of the overflow pipe extends to the lower part of the heat transfer oil chamber, the upper end of the overflow pipe passes through the bottom of the overflow tank body and extends to the top of the overflow tank body, and the reflux port is connected to the center hole at the bottom of the overflow tank body through a reflux pipe.

2. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: The overflow tank body is a closed hemispherical structure.

3. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: A third valve communicating with the heat transfer oil cavity is arranged on the surface of the inner pot.

4. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: A detection hole is arranged on the edge of the inner pot surface, a temperature controller is arranged at the detection hole, and a detection needle of the temperature controller extends into the heat transfer oil cavity.

5. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: The overflow pipe and the return pipe are respectively provided with a first valve and a second valve.

6. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: An S-shaped winding structure is arranged in the middle of the overflow pipe and the return pipe.

7. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: The lower end of the overflow pipe extends into the heat transfer oil cavity which is 0.2-0.3 mm below the bottom of the conical barrel groove.

8. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: The heat-conducting oil cavity is filled with fully sealed hollow metal balls of different diameters.

9. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 8, characterized in that: The hollow metal ball is welded and fixed to the side wall of the heat transfer oil cavity.

10. The honeycomb-shaped rice crust rice cooker inner pot structure according to claim 1, characterized in that: A heat-insulating layer is arranged outside the overflow tank.

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