CN116268965A

CN116268965A - Easy-to-clean electric rice cooker

Info

Publication number: CN116268965A
Application number: CN202310592022.0A
Authority: CN
Inventors: 朱泽春; 崔卫民; 谢伟峰; 王小康
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-06-23

Abstract

The invention discloses an easy-to-clean electric cooker which comprises a cooker body, a cooker cover and an inner container, wherein the cooker cover is covered on the cooker body, the inner container is arranged in the cooker body and is used for cooking rice, the electric cooker comprises a heating device, a temperature sensor, a main control unit and an operation display unit, the main control unit is electrically connected with the heating device, the temperature sensor and the operation display unit, the heating device heats the inner container to cook rice, the operation display unit receives a rice cooking program, the main control unit executes the corresponding rice cooking program, the main control unit obtains the temperature of the inner container through the temperature sensor, the rice cooking program comprises a heating stage, a boiling stage and a stewing stage, the inner container comprises a metal outer layer and a stainless steel inner layer, and a plurality of mutually independent water locking grooves are formed in the inner surface of the stainless steel inner layer and are used for adsorbing water vapor after the stewing stage or/and/or the stewing stage is/are used for forming a water film so as to infiltrate into rice and the inner wall of the inner container.

Description

Easy-to-clean electric rice cooker

Technical Field

The invention belongs to the field of household appliances, and particularly relates to an easy-to-clean electric rice cooker.

Background

The cooking appliance such as the electric cooker generally comprises a cooker body and a cooker cover, wherein a heating device such as an inner container, a heating disc or an electromagnetic wire coil and the like is arranged in the cooker body, the inner container is generally made of metal materials, and heat can be transferred to the inner container after the heating device is electrified, so that rice in the inner container is cured. However, the rice cooker has a phenomenon of sticking to the cooker during the cooking process, so that the inner container is difficult to clean after meal, and the use experience of a user is deteriorated. In order to solve the technical problem in the prior art, the following schemes are mainly adopted:

the non-stick coating is arranged on the inner wall of the liner, but the non-stick coating is easy to fall off in the long-term cooking process, especially under the conditions of high-temperature cooking and dry burning, the non-stick coating is easier to fall off, the anti-sticking effect of the non-stick coating is influenced, and meanwhile, the health of people is also influenced to a certain extent; in the prior art, a groove is formed in the inner wall surface of the liner, and a non-stick coating is only arranged in the groove, so that the use area of the coating is reduced, the probability of coating falling off caused by factors such as scraping is reduced as much as possible, and the coating in the scheme still has the falling-off risk.

One is an anti-sticking surface disclosed in patent CN201710759378.3, which adopts a rough surface with micron-sized roughness, reduces surface energy, improves surface hydrophobicity, changes a contact surface between a contacted substance and the anti-sticking surface into a composite contact surface, effectively reduces a contact area between the contacted substance and the anti-sticking surface, obviously reduces adsorption force between the contacted substance and the anti-sticking surface, and enables the substance to be unable to adhere and gather on the anti-sticking surface, thus realizing anti-sticking.

Disclosure of Invention

The invention provides an easy-to-clean electric rice cooker, which aims to solve at least one of the technical problems.

In order to achieve the above purpose, the specific technical scheme of the invention is as follows:

the utility model provides an easy-to-clean electric cooker, includes a kind of deep pot body, lid establish the deep pot lid on the deep pot body and set up the inner bag that is used for cooking rice in the deep pot body, electric cooker includes heating device, temperature sensor, main control unit and operation display element, heating device, temperature sensor and operation display element are connected to main control unit electricity, heating device heats the inner bag and cooks rice, operation display element receives rice cooking procedure, main control unit carries out corresponding rice cooking procedure, main control unit obtains the temperature of inner bag through temperature sensor, rice cooking procedure includes intensification stage, boiling stage and stew the rice stage, the inner bag includes metal skin and stainless steel inlayer, the internal surface of stainless steel inlayer is equipped with a plurality of mutually independent lock water recesses, lock water recess is used for adsorbing stew stage or/and stew after the rice stage finishes and forms the water film to soak rice and inner bag inner wall.

Further, support lines are formed between adjacent water locking grooves, and the water locking grooves and the support lines are matched to adsorb water vapor and form a water film.

Further, the radius of the water locking groove is 0.1mm to 0.5mm, and the ratio of the width of the supporting pattern to the radius of the water locking groove is 1/2 to 2.

Further, the radius of the water locking groove is 0.1mm to 0.8mm, so that the rice at least covers more than two water locking grooves.

Further, the height difference between the bottom of the water locking groove and the top of the water locking groove is more than or equal to 0.02mm and less than or equal to 1mm.

Further, the plurality of water locking grooves are distributed in a lattice or annular array, and the density of the water locking grooves is not less than 30 per square centimeter.

Further, the metal outer layer comprises a middle heat conduction layer and an outer stainless steel layer, and the water locking groove is arranged on the stainless steel inner layer and is concave to the middle heat conduction layer.

Further, the inner container comprises a bottom wall and a side wall which is arranged by extending upwards from the bottom wall, the top end of the side wall is outwards bent to form a container edge, the top surface of the container edge is polished or turned to be thin to form a smooth surface, and the water locking groove on the inner side of the container edge is polished or turned to form a boundary between the surface of the water locking groove and the smooth surface.

Further, the surface of the hydrophilic grain is provided with a metal protection film, and the thickness of the metal protection film in the water locking groove is 0.5% -2% of the depth of the water locking groove.

Further, the pot body is provided with a cooling fan which is used for cooling the outer wall of the inner container so as to condense water vapor at the stewing stage and/or after the stewing stage is finished.

The invention has the following beneficial effects:

the rice cooking program comprises a heating stage, a boiling stage and a stewing stage, wherein rice grains in the heating stage and the boiling stage are soaked in water for cooking, and most of water in the inner container is absorbed by rice or vaporized into water vapor after the stewing stage or the stewing stage is finished.

As a preferred embodiment of the invention, supporting grains are formed between the adjacent water locking grooves, and the water locking grooves and the supporting grains are matched to absorb water vapor and form a water film. In the earlier stage of rice cooking, as the water locking groove is closer to the heating device, the tank bottom and the tank wall can heat rice grains in three dimensions, so that the heating device can better transfer heat to the rice grains, and the cooking rate and quality of rice are improved; at the end of rice cooking, namely at the end of the rice stewing stage or the rice stewing stage, the supporting grains enable the direct contact area of rice and the inner container to be reduced, the heat quantity directly transferred to the rice by the inner container is reduced, the phenomenon that the rice is burnt and stuck due to overhigh temperature is avoided, the water locking grooves can be matched with the supporting grains to increase the contact area of water, steam and the inner wall of the inner container, more attachment points are provided for water and steam stripping, the hydrophilicity of the stainless steel surface is enhanced, small water drops formed by water, steam and the like are conveniently attached to the surface of the stainless steel inner layer and form a water film, and the water drops can be locked in the water locking grooves under the action of surface tension due to the independent arrangement of the water locking grooves, so that the water drops can be soaked with the soaked starch alone or continuously, the rice and the inner wall of the inner container can be soaked, the time of the water film is prolonged, and the non-coating non-sticking effect is improved.

As a preferred embodiment of the present invention, the radius of the water locking groove is 0.1mm to 0.8mm so that the rice covers at least two or more of the water locking grooves. So set up and make partly lock water recess can form antiseized chamber with between the rice grain for the rice grain can be in with partly water seal under the effect of factors such as self gravity, the pressure of other rice grain in antiseized chamber, at the terminal stage of rice culinary art, the water that antiseized intracavity held is vapor, it slightly jack-ups the rice grain with the air of thermal expansion together, thereby cooperate together with the water film that other lock water recess departments formed, further reduce the adhesion of rice and inner bag, make the rice can not be stained with on the inner bag inner wall, convenience of customers flourish rice and wash the inner bag after the culinary art is accomplished.

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

Drawings

Fig. 1 is a schematic structural diagram of the easy-to-clean electric rice cooker according to an embodiment of the invention;

FIG. 2 is a schematic view of the liner according to an embodiment of the present invention;

FIG. 3 is a partial schematic view of FIG. 2 at A;

FIG. 4 is a partial schematic view of FIG. 2 at B;

FIG. 5 is a partial schematic view of FIG. 4 at C;

FIG. 6 is a partial schematic view of a bottom wall of a liner according to another embodiment of the present invention;

fig. 7 is a schematic view of a portion of a water locking groove in a bottom wall of a liner according to another embodiment of the present invention.

Reference numerals: a pot cover 100; a pot 200; an inner cover 201; a housing 202; a cooling fan 203; an inner container 210; a bottom wall 211; a sidewall 212; a liner edge 213; an inner layer 214 of stainless steel; a middle heat conductive layer 215; an outer stainless steel layer 216; a water locking groove 220; support lines 221; a protrusion 222; a release chamber 300; rice grains 400.

Detailed Description

For a better understanding of the objects, structures and functions of the present invention, reference should be made to the following detailed description of the invention with reference to the accompanying drawings in which it is evident that the illustrated embodiments are some, but not all, of the embodiments of the invention. Based on the technical solution provided by the invention and the embodiments given, all other embodiments obtained by a person skilled in the art without making any inventive effort are within the scope of protection of the invention.

It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.

Referring to fig. 1 to 5, the easy-to-clean electric cooker provided in this embodiment includes a cooker body 200, a cooker cover 100 covering the cooker body, and an inner container 210 disposed in the cooker body for cooking rice, the electric cooker includes a heating device, a temperature sensor, a main control unit, and an operation display unit, the main control unit is electrically connected with the heating device, the temperature sensor, and the operation display unit, the heating device heats the inner container 210 to cook rice, the operation display unit receives a rice cooking program, the main control unit executes a corresponding rice cooking program, the main control unit obtains a temperature of the inner container through the temperature sensor, the rice cooking program includes a heating stage, a boiling stage, and a stewing stage, the inner container 210 includes a metal outer layer and a stainless steel inner layer 214, an inner surface of the stainless steel inner layer 214 is provided with a plurality of mutually independent water locking grooves 220, and the water locking grooves 220 are used for absorbing water vapor after the stewing stage or/and the stewing stage ends and forming a water film so as to infiltrate the inner wall of the rice and the inner container. The heating device is typically a bottom heating plate or an electromagnetic coil, and is used for heating the inner container 210. The operation display unit is arranged on the side wall of the cooker body or the cooker cover, and can operate the electric cooker, and a plurality of cooking programs such as cooking programs of cooking rice, porridge cooking, soup cooking and the like are generally arranged on the operation display unit. The rice cooking program comprises a heating stage, a boiling stage and a stewing stage, wherein the main control unit acquires the temperature of the inner container through the temperature sensor and controls the heating power of the heating device so as to realize cooking in different stages. The temperature sensor may be a bottom temperature sensor or a top temperature sensor, or both. In the heating stage, mainly high-power rapid heating is performed to a preset temperature, low-power or intermittent heating is performed in the boiling stage to avoid overflowing, in the stewing stage, most of water in the inner container is absorbed by rice or vaporized into steam, a plurality of mutually independent water locking grooves are formed in the surface of the stainless steel inner layer, the geometric structure of the surface of the stainless steel is changed, the water contact angle of the surface of the stainless steel inner layer is changed, wettability of the surface of the stainless steel is improved, good hydrophilicity is achieved, compared with the surface of the stainless steel which is smooth, a small amount of water on the inner wall of the inner container and steam in a rice gap can be adsorbed, water and steam and the like form small water drops to adhere to the surface of the stainless steel inner layer and form a layer of water film, the water film can infiltrate the inner wall of the rice and the inner container, adhesion force between the rice and the inner container is reduced, the rice can not adhere to the inner wall of the inner container, and even if the precipitated starch is filled into the water locking grooves, the water film can be infiltrated by the residual water film and the inner container to form a small amount of water film, the water film can be maintained in the inner container, the water film can be maintained in a long time, and the water film can be maintained in a long-time, and the water film can be kept warm, and the water film can be kept clean and the inner container is free from being heated, and the water film can be kept warm, and the heat-up, and the heat-insulating effect can be kept warm, and long-up.

Specifically, a cover which can be opened and closed at the top of the cooker body 200 is provided with a cooker cover 100, and the cooker cover 100 and the cooker body 200 can be hinged or can be arranged in a split manner; the pot body 200 has a cylindrical accommodating space, and the inner container 210 can be freely placed in the accommodating space or taken out from the accommodating space to facilitate cleaning; the inner container 210 is an uncoated inner container, and generally has a circular opening at an upper portion thereof for accommodating materials to be heated, such as rice, soup, etc., and may be a ball container with an outwardly convex sidewall or a straight container with a vertical sidewall, and when the inner container 210 is placed in the accommodating space and the pot cover 100 is covered on the pot body 200, the pot cover 100 and the inner container 210 together define a cooking cavity; the easy-to-clean electric cooker further comprises a heating device for heating the inner container 210, which may be a heating plate or an electromagnetic wire coil, and is located at the bottom or the side of the accommodating space, and heats the food in the cooking cavity by heating the inner container.

After the rice stewing stage or/and the rice stewing stage is finished, most of water in the inner container 210 is absorbed by rice or is vaporized into steam, if the structure similar to the prior art is adopted, a small amount of water remained in the inner container and steam in a rice gap are difficult to effectively utilize due to hydrophobicity, so that starch precipitated by rice during cooking is not soaked, the viscosity is high, a sticky force point is provided for the rice, and finally the rice is sticky.

According to the embodiment, through arranging the mutually independent water locking grooves on the surface of the stainless steel inner layer 214, the geometric structure of the stainless steel surface is changed, the water contact angle of the stainless steel surface is changed, the wettability of the stainless steel surface is improved, the stainless steel inner layer 214 has good hydrophilicity, compared with the smooth stainless steel surface, a small amount of water on the inner wall of the inner container and water vapor in a rice gap can be adsorbed, water, steam and the like form small water drops to be adhered to the surface of the stainless steel inner layer 214 and form a water film, the water film can infiltrate rice and the inner wall of the inner container, the adhesion force between rice and the inner container 210 is reduced, so that the rice cannot adhere to the inner wall of the inner container, and due to the hydrophilicity of the surface of the stainless steel inner layer 214, even if starch separated out from rice fills the water locking grooves, the water film can be absorbed by a small amount of water left in the inner container 210 or other water films which are not completely filled, and the like, the effect of maintaining the moisture is achieved, the water film of the inner container 210 can be maintained, the water film of the heated part can be quickly disappeared, the rice can be prevented from being infiltrated, the rice can be finally kept non-adhesive in the inner container without the water film, and the heat preservation effect can be realized, and the user can not be kept clean in the inner container for a long time.

In some embodiments of the present invention, supporting grooves 221 are formed between adjacent water locking grooves 220, and the water locking grooves 220 and the supporting grooves 221 cooperate to absorb water vapor and form a water film.

In the earlier stage of rice cooking, as the water locking groove 220 is closer to the heating device, the tank bottom and the tank wall can heat rice grains in three dimensions, so that the heating device can better transfer heat to the rice grains, and the cooking rate and quality of rice are improved; at the end of cooking rice, the supporting lines 221 reduce the direct contact area between the rice and the inner container, the heat directly transferred to the rice by the inner container is reduced, the scorching and sticky phenomenon of the rice due to overhigh temperature is avoided, the water locking grooves 220 can be matched with the supporting lines 221 to increase the contact area between water and steam and the inner wall of the inner container, more attachment points are provided for water, steam and the like, so that the hydrophilicity of the stainless steel surface is enhanced, small water drops formed by the water, the steam and the like are convenient to attach to the surface of the stainless steel inner layer 214 and form a water film, and the water drops are locked in the water locking grooves 220 (refer to the part indicated by the broken line in the groove in FIG. 3) under the action of surface tension due to the independent arrangement of the water locking grooves 220, so that the water drops can be used for continuously infiltrating the rice and the inner container independently or together with infiltrated starch, the water film infiltration time is increased, and the non-sticky effect of the non-coating is improved.

It should be noted that, the independent means that two water locking grooves 220 are not communicated with each other, and a certain solid supporting pattern 221 is provided between two adjacent water locking grooves 220. It should be noted that, the shape of the water locking groove 220 is not particularly limited, for example, in a specific embodiment, the shape of the water locking groove 220 is circular, and the slot diameter D refers to the diameter of the circular; in another specific embodiment, the shape of the water locking groove 220 is a regular hexagon, and the diameter D of the notch refers to the diameter of the circumscribed circle of the regular hexagon; in another specific embodiment, the water locking groove 220 is rectangular in shape, and the slot diameter D refers to the width dimension between two short sides of the rectangle. Of course, those skilled in the art may further arrange the water locking groove 220 in a triangle, square or fan shape according to the specific conditions of the processing requirements, etc., which are not further listed herein.

Alternatively, the water locking groove 220 may be formed by chemical etching, or may be formed by laser etching, which is not limited herein.

In a specific embodiment, the radius of the water locking groove 220 is 0.1mm to 0.5mm, and the ratio of the width of the supporting groove 221 to the radius of the water locking groove is 1/2 to 2. In other words, referring to FIG. 4, the water locking groove has a diameter D, a radius R,0.1 mm.ltoreq.R.ltoreq.0.5 mm, and the supporting grain has a width L, 1/2.ltoreq.L/R.ltoreq.2.

The radius of the water locking groove 220 is limited to be in the range of 0.1mm to 0.5mm, such as 0.1mm, 0.3mm, 0.5mm and the like, the ratio of the width of the supporting grain 221 to the radius of the water locking groove is limited to be 1/2 to 2, such as 1/2, 1, 3/2, 2 and the like, the non-adhesion performance and the processability of the stainless steel inner layer can be considered, the problems that the hydrophilic performance of the hydrophilic grain is reduced or even the hydrophilic performance is lost and the processing is difficult due to the fact that the radius of the water locking groove 220 is too small and the width of the supporting grain 221 is too small are avoided, the problems that rice grains caused by the too large radius of the water locking groove 220 are clamped into the water locking groove 220 and are burnt and stuck due to direct heating of the groove wall and the groove bottom are avoided, and the problem that the water film formed by too far distance between the two water locking grooves caused by the too large width of the supporting grain 221 cannot infiltrate the rice grains and the non-adhesion effect is not obvious are avoided.

Referring to fig. 4 and 5, in a specific embodiment, the water locking groove 220 has a radius of 0.1mm to 0.8mm so that the rice covers at least two or more of the water locking grooves 220. Because the rice grains are different in the inner container 210, the water locking grooves 220 cannot be communicated with the gaps of the rice and can absorb water vapor, but by reasonably controlling the radius of the water locking grooves 220, an anti-sticking cavity 300 can be formed between a part of the water locking grooves 220 and the rice grains 400, so that the rice grains 400 can seal a part of the water in the anti-sticking cavity 300 under the effects of self gravity, the pressure of other rice grains and other factors, at the end of cooking of the rice, the water contained in the anti-sticking cavity 300 is vaporized into water vapor, and the water vapor slightly jacks the rice grains together with the air expanded by heating, so that the water film formed at the other water locking grooves is matched together, the adhesion force between the rice and the inner container is further reduced, the non-sticking of the rice can be promoted even if the water locking grooves 220 cannot play the role of absorbing water vapor, and the non-sticking effect of the non-coating is improved.

Referring to fig. 4, in a specific embodiment, a height difference H between the bottom of the water locking groove 220 and the top of the water locking groove 220 is 0.02mm or more and 1mm or less. The non-sticking performance and the cleaning performance of the liner can be considered through the arrangement: if H is less than 0.02mm, the water locking groove 220 cannot be guaranteed to form an effective water locking effect, so that only a small amount of water, steam and the like can be absorbed in the water locking groove, and finally, the rice cannot be effectively soaked, and the adhesive force between the rice and the liner cannot be reduced; if H is greater than 1mm, although the water locking groove 220 can be ensured to have a certain volume, and the effect of water vapor adsorption is ensured, the foreign matters are easily remained in the water locking groove 220 due to too large depth, which is not beneficial to cleaning of users and reduces the use experience of users.

In a specific embodiment, a plurality of the water locking grooves 220 are distributed in a lattice or annular array, and the density of the water locking grooves 220 is not less than 30 per square centimeter. The arrangement can ensure that the inner surface of the stainless steel inner layer 214 is provided with a proper groove, ensure that the surface of the stainless steel inner layer 214 is provided with an effective water locking effect, prevent the water locking groove 220 from being too sparse in distribution, and lead the stainless steel inner layer 214 to absorb a small amount of water vapor or not absorb the water vapor, so that rice cannot be effectively soaked, and the effect of non-coating and non-sticking cannot be realized.

Referring to fig. 6, in some embodiments of the invention, the metal outer layer includes a middle heat conductive layer 215 and an outer stainless steel layer 216, and the water locking groove 220 is located in the stainless steel inner layer 214 and is recessed toward the middle heat conductive layer 215. The inner and outer stainless steel layers can play a role of protecting the middle heat conducting layer 215 at lower cost, the middle heat conducting layer 215 can play a role of uniform heating and heat storage, the heat uniformity of the inner container 210 can be improved, the phenomenon that rice is burnt, stuck and stuck on the inner container due to overhigh local temperature is avoided, the effect of non-coating and non-sticking is further improved, the heat storage effect can enable the water locking groove 220 concave to the middle heat conducting layer 215 to better receive heat from a heating device, the rice grains are better heated in a three-dimensional mode, and the cooking rate and quality of rice are improved.

Further, the ratio of the distance from the bottom of the water locking groove 220 to the middle heat conductive layer 215 to the thickness of the stainless steel inner layer 214 is not more than 0.95. If the value is greater than 0.95, the effect of the water locking groove 220 to more easily receive the heat transfer of the middle heat conductive layer 215 than the surface of the stainless steel inner layer 214 is not obvious, resulting in poor effects of three-dimensional heating of rice grains and improving the cooking rate of rice.

Referring to fig. 7, as a preferred embodiment, the water locking groove 220 is provided therein with a protrusion 222. The protrusions 222 can be matched with the supporting lines 221, so that the capability of the water locking grooves 220 for locking water drops in the grooves by means of surface tension is improved, and water film infiltration formed by rice, starch and the like is ensured.

Preferably, the height of the protrusions 222 is smaller than the height of the supporting patterns 221, and the heights of the protrusions 222 are gradually decreased from the center of the groove to the edge of the groove.

Optionally, the ratio of the distance from the bottom of the water locking groove 220 to the middle heat conducting layer 215 to the thickness of the stainless steel inner layer 214 is not less than 0.2, so as to ensure the protection effect of the stainless steel inner layer 214 to the middle heat conducting layer 215.

Further, the middle heat conducting layer 215 is an aluminum layer, so that the weight of the liner 210 can be reduced while the heat conducting performance is improved, and the liner is convenient for a user to take and put.

In some embodiments of the present invention, the inner container 210 includes a bottom wall 211 and a side wall 212 extending upward from the bottom wall 211, the water locking grooves 220 are distributed on the bottom wall 211 and at least a portion of the side wall 212, and the easy-to-clean electric cooker is provided with a maximum cooking rice amount, and the maximum cooking rice amount corresponds to a rice amount that is smaller than the distribution height of the water locking grooves on the side wall 212. Therefore, the probability that rice grains correspond to the water locking grooves can reach the maximum when rice is cooked, so that as many rice grains as possible can be soaked by the formed water film, the nonstick effect is ensured, and the application range of the electric cooker is also improved.

In a specific embodiment, the water locking grooves 220 are distributed on the bottom wall 211 and at least a portion of the side wall 212.

Optionally, the distribution density of the water locking grooves 220 is greater at the bottom of the sidewall than at the upper portion of the sidewall. In the cooking process of rice, the temperature of the side wall 212 is generally lower than that of the bottom wall 211, and the temperature of the part of the side wall, which is closer to the liner edge, is relatively lower, so that the sticking probability of rice on the side wall is smaller than that of rice on the bottom wall, and the rice is less likely to stick at the position of the side wall, which is closer to the liner edge, and the production cost can be reduced on the premise of ensuring the non-stick effect.

Further, the top end of the side wall 212 is bent outwards to form a liner edge 213, the top surface of the liner edge 213 is polished or turned to be thin to form a smooth surface, and the water locking groove on the inner side of the liner edge is polished or turned to form a boundary between the surface of the water locking groove and the smooth surface. Because the top surface along the courage and pot mouth sealing washer sealing contact, therefore the rice can not take place the contact with the top surface along the courage when cooking, and the top surface along the courage need not to set up the lock water recess promptly, polishes or the turning attenuation of the top surface along the courage and forms smooth surface, can promote the sealed effect of pot mouth sealing washer. In addition, because the liner is polished and turned to be thin along the thickness of the top surface, the energy storage is small, the heat dissipation is improved, and the risk of scalding the hand of a user end is reduced after cooking is finished.

In some embodiments of the present invention, the surface of the water locking groove is provided with a metal protection film, and the thickness of the metal protection film in the water locking groove is 0.5% -2% of the depth of the water locking groove. The arrangement can further improve the water locking performance of the stainless steel inner layer, prevent the problem of water locking performance attenuation of the water locking groove caused by long-term scraping, and can also change the luster of the inner surface of the inner container 210, thereby improving the aesthetic property of the inner container 210. The thickness of the metal protection film is far smaller than the depth of the groove, so that the groove can be prevented from being filled up by the arrangement of the metal protection film, and the existence of the groove is ensured. The thickness of the metal protective film and the depth relation of the groove are set, so that the contact area of rice starch particles is small, the acting force is weak, the rice starch particles are easy to infiltrate by water, and the non-adhesive performance is improved. The metal protective film is not a chemical coating such as the existing Teflon and the like, and is not easy to fall off during cleaning. Due to the existence of the independent grooves, steam condenses on the wall of the liner after the rice is cooked, and the grooves lock condensed water so that the rice and the surface of the liner have a certain isolation effect and form a non-sticky effect. And the condensed water is locked by the grooves, so that the probability of condensed water aggregation is reduced, the local partial wetting of the rice is not easy to occur, and the consistency of the taste of the rice is improved. Because the thickness of the metal protective film can reduce the depth of the groove, the thickness needs to be reasonably set, otherwise, the water storage space of the groove can be reduced, and the rice is stuck to the pot.

Optionally, in a specific embodiment, the protective metal film is a titanium metal layer disposed on the supporting pattern 221. It may be formed by electroplating or by lamination, and is not particularly limited herein. The titanium material has good friction resistance, and the arrangement can effectively protect the water locking groove 220, prevent the water locking groove 220 from being damaged to cause the liner to lose hydrophilic effect, and simultaneously has certain antibacterial property, thereby being beneficial to improving the sanitation of the liner 210. Of course, the protective metal film may be a metal such as chromium, an alloy thereof, an oxide thereof, or the like, and is not particularly limited.

In some embodiments of the present invention, referring to fig. 1, the pot 200 includes an inner cover 201 and an outer casing 202, a cooling fan 203 is disposed between the inner cover 201 and the outer casing 202, and an air outlet channel is disposed in the inner cover 201 corresponding to the cooling fan 203, and is disposed towards the inner container 210.

The cooling fan is used for cooling the outer wall of the inner container so as to condense water vapor at the stewing stage and/or after the stewing stage is finished. Through cooling fan 210 orderly with cold wind blow inner bag 210 bottom, the temperature of inner bag 210 can reduce fast to promote the vapor in the rice space to liquefy better and adhere to on the lock water recess, more be favorable to the formation of water film, improved the effect that no coating is nonstick, convenience of customers is in the back of cooking to hold rice, also more be favorable to the user to wash the inner bag.

Specifically, referring to fig. 1, the pot body 200 includes a housing 202 and an inner cover 201 sequentially disposed from outside to inside, the housing 202 is generally formed by metal or by joining metal and plastic, and the inner cover 201 can be formed by a heat-insulating cover alone or by combining a heat-insulating cover and an electromagnetic coil; a space is provided between the inner cover 201 and the outer case 202, and a cooling fan 203, a circuit board, and the like may be provided therein.

The positions of the cooling fan and the air outlet passage are not particularly limited in the present invention. For example, in a specific embodiment, referring to fig. 1, the cooling fan 203 is disposed at a side portion of the pot 200, and the air outlet channel is inclined toward the bottom of the inner container 210; in another specific embodiment, the cooling fan 203 is disposed at the bottom of the pot body 200, and the air outlet channel faces the bottom wall of the liner 210, so as to directly cool the bottom wall of the liner with higher temperature, and the effect is better.

It can be appreciated that the easy-to-clean electric rice cooker can also adopt natural cooling or other cooling modes without limitation.

It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides an easy-to-clean electric cooker, includes a kind of deep pot body, lid establish the deep pot lid on the deep pot body and set up the inner bag that is used for cooking rice in the deep pot body, electric cooker includes heating device, temperature sensor, main control unit and operation display element, heating device, temperature sensor and operation display element are connected to main control unit electricity, heating device heats the inner bag in order to cook rice, a serial communication port, operation display element receives rice cooking procedure, main control unit carries out corresponding rice cooking procedure, main control unit obtains the temperature of inner bag through temperature sensor, rice cooking procedure includes intensification stage, boiling stage and stew the rice stage, the inner bag includes metal skin and stainless steel inlayer, the internal surface of stainless steel inlayer is equipped with a plurality of mutually independent lock water grooves, lock water groove is used for adsorbing stew the steam after the rice stage or stew the rice stage finishes and forms the water film to soak rice and inner bag inner wall.

2. The easy-to-clean rice cooker of claim 1, wherein supporting grooves are formed between adjacent water locking grooves, and the water locking grooves and the supporting grooves are matched to absorb water vapor and form a water film.

3. The easy-to-clean electric rice cooker according to claim 2, wherein the radius of the water locking groove is 0.1mm to 0.5mm, and the ratio of the width of the supporting pattern to the radius of the water locking groove is 1/2 to 2.

4. The easy-to-clean rice cooker according to claim 2, wherein the radius of the water locking groove is 0.1mm to 0.8mm so that the rice covers at least two or more of the water locking grooves.

5. The easy-to-clean electric rice cooker according to claim 2, wherein a height difference between a bottom of the water locking groove and a top of the water locking groove is 0.02mm or more and 1mm or less.

6. The easy-to-clean rice cooker according to claim 2, wherein a plurality of the water locking grooves are distributed in a lattice or annular array, and the density of the water locking grooves is not less than 30 per square centimeter.

7. The easy-to-clean rice cooker of claim 2, wherein the metal outer layer comprises a middle heat conducting layer and an outer stainless steel layer, and the water locking groove is positioned in the stainless steel inner layer and is concave to the middle heat conducting layer.

8. The easy-to-clean electric rice cooker according to claim 1, wherein the inner container comprises a bottom wall and a side wall extending upwards from the bottom wall, the top end of the side wall is bent outwards to form a container edge, the top surface of the container edge is polished or turned to be thin to form a smooth surface, and the water locking groove on the inner side of the container edge is polished or turned to form a boundary between the surface of the water locking groove and the smooth surface.

9. The easy-to-clean electric cooker according to claim 1, wherein a metal protection film is arranged on the surface of the water locking groove, and the thickness of the metal protection film in the water locking groove is 0.5% -2% of the depth of the water locking groove.

10. The easy-to-clean electric rice cooker according to claim 1, wherein the cooker body is provided with a cooling fan for cooling the outer wall of the inner container so as to condense water vapor at the end of the stewing stage and/or the stewing stage.