Efficient thermal cycle electric cooker
By using a highly thermally conductive material to heat the inner pot and a heat transfer fluid circulation design in the rice cooker, the problems of excessive heat loss and low heat utilization in traditional rice cookers are solved. This achieves all-round heat circulation heating, improving cooking efficiency and the uniformity of rice texture.
Patent Information
- Application Number
- CN202520270083.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Traditional rice cookers lose a lot of heat during the heating process, resulting in low heat utilization and longer cooking time, as well as uneven heating of the rice, which affects the taste.
The heating inner liner is made of a material with high thermal conductivity. Combined with the heat circulation design of heat pipes and heat transfer fluid, heat is evenly distributed through the vaporization and liquefaction circulation of the heat transfer fluid, achieving all-round heat circulation heating.
It improves heat utilization, shortens cooking time, and ensures consistent texture between the top and bottom layers of rice, thus enhancing cooking efficiency and rice quality.
Smart Images
Figure CN223759642U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice cooker technology, specifically to a high-efficiency heat circulation rice cooker. Background Technology
[0002] An electric rice cooker, also known as an electric rice pot, is a very common appliance in modern kitchens. It is a cooking appliance that primarily uses electrical energy to convert into internal energy, and has multiple functions such as steaming, boiling, stewing, and simmering. The main features and functions of an electric rice cooker include:
[0003] Rice Cooking Function: The most basic and important function of a rice cooker is cooking rice. Through its internal heating element and control circuit, the rice cooker can precisely control the heating temperature and time to cook soft and delicious rice. Keep-Warm Function: After the rice is cooked, the rice cooker automatically switches to keep-warm mode to maintain the temperature and texture of the rice, making it convenient to enjoy hot rice at any time. Timer Function: Most modern rice cookers are equipped with a timer function. Users can set the cooking time according to their needs, and the rice cooker will automatically start cooking at the set time, which is perfect for busy working people. Multifunctional Cooking: In addition to cooking rice, many rice cookers also have multiple cooking functions such as steaming, stewing, and simmering to meet different user needs. Safety Protection: Rice cookers usually have an overheat protection device inside. When the temperature exceeds the safe value, it will automatically cut off the power to prevent fires and other safety accidents. Easy to Clean: The inner pot of the rice cooker is usually made of a non-stick coating material, which not only prevents rice from sticking during cooking but also makes it very easy to clean. Energy-saving and environmentally friendly: With the development of technology, modern rice cookers have also made great improvements in energy saving, and can reduce energy consumption while ensuring cooking effect.
[0004] However, in practical use, with the accelerated pace of modern life, people have higher requirements for the cooking efficiency and taste of rice cookers, which are one of the essential appliances in the family kitchen. Traditional rice cookers lose a lot of heat during the heating process and have a low heat utilization rate, resulting in a longer cooking time and uneven heating of rice, which affects the taste. Utility Model Content
[0005] The purpose of this utility model is to provide a high-efficiency heat circulation rice cooker to solve the problems mentioned in the background art. With the acceleration of the pace of modern life, rice cookers are one of the essential appliances in the family kitchen. People have higher requirements for their cooking efficiency and the taste of rice. Traditional rice cookers lose a lot of heat during the heating process, have low heat utilization rate, resulting in long cooking time and uneven heating of rice, which affects the taste.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a rice cooker body, wherein a heat-insulating top cover is detachably installed on the upper end of the rice cooker body, a protective outer shell is fixedly installed on the outer end of the rice cooker body, and a heat-insulating layer is fixedly installed on the inner side of the rice cooker body;
[0007] A heating inner liner is fixedly installed inside the heat insulation layer. An electric heating plate is embedded and fixedly installed at the bottom of the heat insulation layer. A rice cooker for holding rice is movably connected to the inner wall of the heating inner liner. An installation groove is embedded and fixedly installed in the middle of the lower end of the heating inner liner. A safety switch is fixedly installed in the middle of the bottom of the installation groove. A support spring is fixedly installed at the bottom of the installation groove. A pressing column for pressing the safety switch is fixedly installed at the upper end of the support spring. A heat conduction cavity is opened inside the heating inner liner. A heat conduction pipe is fixedly installed around the inner wall of the heat conduction cavity. The heat conduction pipe is filled with heat conduction fluid.
[0008] Preferably, the rice cooker body is equipped with a rice cooker controller for controlling the cooking power.
[0009] Preferably, the heating liner is made of a material with high thermal conductivity, and the bottom of the heating liner has a slightly arc-shaped design.
[0010] Preferably, the upper end of the electric heating plate is connected to the bottom of the heating inner liner in an arc shape.
[0011] Preferably, a temperature sensor for monitoring the temperature of the heating inner liner is fixedly installed inside the heating inner liner.
[0012] Preferably, the lower end of the pressing column is movably connected to the inner wall of the upper end of the mounting groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] When the rice cooker is placed in its proper position, the required ingredients are added inside. Upon addition, the heat-preserving top cover closes the upper part of the rice cooker. This closure activates the electric heating plate, which heats the inner pot. During heating, a temperature sensor monitors the internal temperature of the inner pot in real time. A rice cooker controller installed inside the rice cooker adjusts the power of the heating plate according to different cooking stages (such as preheating, heating up, and heat preservation). For example, during rice cooking... When the rice is almost cooked, reduce the power appropriately to avoid burning the rice at the bottom. At the same time, when the inner pot is heating the rice, in addition to the heat being directly transferred to the bottom of the rice cooker, some of the heat is absorbed by the heat conduction pipe. When the heat conduction pipe absorbs heat, the heat conduction liquid inside the heat conduction pipe quickly vaporizes after being heated. The steam carries the heat and rises along the inner wall of the heat conduction pipe. After reaching the top, it cools down and liquefies back, flowing back. This cycle repeats, evenly distributing the heat to all parts of the upper part of the inner pot. This allows for all-round heat circulation heating while cooking rice, ensuring that the rice in the upper layer of the rice cooker is also cooked to the best taste. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency heat circulation rice cooker according to this utility model. Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the overall structure of a high-efficiency heat circulation rice cooker according to this utility model. Figure 2 ;
[0017] Figure 3 This is a partial cross-sectional view of a high-efficiency heat circulation rice cooker according to the present invention.
[0018] In the picture: 1. Rice cooker body; 2. Insulated top cover; 3. Protective outer shell; 4. Heat insulation layer; 5. Heating inner pot; 6. Electric heating plate; 7. Mounting groove; 8. Safety switch; 9. Support spring; 10. Pressing column; 11. Heat conduction cavity; 12. Heat conduction pipe; 13. Rice cooker. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-3This utility model provides a high-efficiency heat circulation rice cooker technical solution: it includes a rice cooker body 1, and a rice cooker controller for controlling the rice cooking power is installed inside the rice cooker body 1. A heat preservation top cover 2 is detachably installed on the upper end of the rice cooker body 1. A protective shell 3 is fixedly installed on the outer end of the rice cooker body 1, so that the outer end of the rice cooker body 1 is safely protected by the protective shell 3. A heat insulation layer 4 is fixedly installed on the inner side of the rice cooker body 1, so that the heat insulation layer 4 reduces the heat loss from the inside of the rice cooker body 1 to the outside.
[0021] A heating inner liner 5 is fixedly installed inside the heat insulation layer 4. The heating inner liner 5 is made of a highly thermally conductive material and has a slightly curved bottom. An electric heating plate 6 is embedded and fixedly installed inside the bottom of the heat insulation layer 4, and the upper end of the electric heating plate 6 is connected to the curved bottom of the heating inner liner 5. This increases the contact area with the electric heating plate 6 through the slightly curved design of the bottom of the heating inner liner 5, ensuring that the heat from the electric heating plate 6 is transferred to the heating inner liner 5 more efficiently. A temperature sensor for monitoring the temperature of the heating inner liner 5 is fixedly installed inside the heating inner liner 5. A container for holding rice is movably connected to the inner wall of the heating inner liner 5. The rice cooker 13 has a heating inner pot 5 with a mounting groove 7 fixedly installed in the middle of its lower end. A safety switch 8 is fixedly installed in the middle of the bottom of the mounting groove 7. A support spring 9 is fixedly installed in the bottom of the mounting groove 7. A pressing post 10 for pressing the safety switch 8 is fixedly installed on the upper end of the support spring 9. The lower end of the pressing post 10 is movably connected to the inner wall of the upper end of the mounting groove 7, so that the pressing post 10 is elastically supported and limited by the support spring 9 and the mounting groove 7. A heat conduction cavity 11 is opened inside the heating inner pot 5. A heat conduction pipe 12 is fixedly installed around the inner wall of the heat conduction cavity 11, and the heat conduction pipe 12 is filled with heat conduction liquid.
[0022] Working principle: In use, this utility model places the rice cooker 13, which is to be cooked, inside the heating inner pot 5. When the rice cooker 13 is placed inside the heating inner pot 5, under its own weight, the lower end of the rice cooker 13 will push the pressing column 10 downward. When the pressing column 10 is pushed downward, the lower end of the pressing column 10 will push down to compress the support spring 9 and press the safety switch 8. When the safety switch 8 is pressed, it indicates that the rice cooker 13 is in place, thereby facilitating the safe positioning of the rice cooker 13 and preventing the rice cooker 13 from cooking rice when it is not in place, which could damage the main body of the rice cooker 1.
[0023] When the rice cooker 13 is placed in place, the required ingredients for cooking rice are put into the rice cooker 13. When the ingredients are put into the rice cooker 13, the top of the rice cooker body 1 is closed by the heat-preserving lid 2. When the top of the rice cooker body 1 is closed, the electric heating plate 6 is activated. When the electric heating plate 6 is activated, it heats the inner pot 5. While the inner pot 5 is heating, the temperature sensor monitors the internal temperature of the inner pot 5 in real time. The rice cooker controller installed inside the rice cooker body 1 adjusts the power of the electric heating plate 6 according to different stages of rice cooking (such as preheating, heating up, and heat preservation). For example, when the rice is almost cooked... When cooking rice, the power should be reduced appropriately to avoid burning the rice at the bottom. At the same time, when the inner pot 5 is heating the rice, in addition to the heat being directly transferred to the bottom of the rice cooker 13, some of the heat will be absorbed by the heat pipe 12. When the heat pipe 12 absorbs heat, the heat-conducting liquid inside the heat pipe 12 will quickly vaporize after being heated. The steam carries the heat and rises along the inner wall of the heat pipe 12. After reaching the top, it cools down and liquefies back. This cycle repeats, evenly distributing the heat to all parts of the upper part of the inner pot 5. This allows for all-round heat circulation heating while cooking rice, ensuring that the rice on the upper layer of the rice cooker 13 is also cooked to the best taste.
[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high efficiency thermal cycled electric rice cooker characterized by: Including the electric rice cooker main part (1), the electric rice cooker main part (1) upper end detachable installation has the heat preservation top cover (2), the electric rice cooker main part (1) outer end fixed installation has the protective shell (3), the electric rice cooker main part (1) inner side fixed installation has the heat insulation layer (4); The heat insulation layer (4) inside fixed installation has the heating inner container (5), the heat insulation layer (4) inner bottom inlay fixed installation has the electric heating disc (6), the heating inner container (5) inner wall is bonded with the movable connection for the rice pot (13) for containing rice, the heating inner container (5) lower end middle part inlay fixed installation has the installation circular groove (7), the installation circular groove (7) inner bottom middle part fixed installation has the safety switch (8), the installation circular groove (7) inner bottom fixed installation has the support spring (9), the support spring (9) upper end fixed installation has the press column (10) for pressing the safety switch (8), the heating inner container (5) inside is set with the heat conduction cavity (11), the heat conduction cavity (11) inner wall is fixedly installed with the heat conduction pipe (12), the heat conduction pipe (12) is filled with heat conduction liquid.
2. The high efficiency thermal cycled electric rice-cooker as claimed in claim 1, wherein: The electric rice cooker main part (1) is internally provided with a rice cooking controller for controlling the rice cooking power.
3. The high efficiency thermal cycled electric rice-cooker as claimed in claim 2, wherein: The heating inner container (5) is made of high thermal conductivity material, and the bottom of the heating inner container (5) is designed as a micro-arc.
4. The high efficiency thermal cycled electric rice-cooker as claimed in claim 3 wherein: The upper end of the electric heating disc (6) is connected with the bottom arc of the heating inner container (5).
5. The high efficiency thermal cycled electric rice-cooker as claimed in claim 4, wherein: The heating inner container (5) is internally fixedly installed with a temperature sensor for monitoring the temperature of the heating inner container (5).
6. The high efficiency thermal cycled electric rice-cooker as claimed in claim 5 wherein: The lower end of the press column (10) is movably connected to the inner wall of the upper end of the installation circular groove (7).