CN115606988A

CN115606988A - Electric cooker easy to clean

Info

Publication number: CN115606988A
Application number: CN202211314733.3A
Authority: CN
Inventors: 朱泽春; 李扬; 于凌振; 王涛
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2023-01-17
Also published as: CN114305072A

Abstract

The application discloses an easy-to-clean electric cooker which comprises a cooker body, a cooker cover, an inner container, a heating device and a cooling fan, wherein the inner container is used for cooking rice, the cooker body is provided with an accommodating cavity, the inner container is arranged in the accommodating cavity and positioned on the heating device, the cooker cover is buckled to seal the accommodating cavity and form a cooking cavity with the inner container, the cooling fan cools the inner container, the part of the lower part of the inner container, which is in contact with the rice, is cooled to form condensed water, and the condensed water soaks the rice attached to the inner wall of the inner container; the cooker comprises a cooker body, a cooker cover and a cooker body, wherein a first air exhaust opening is formed in the joint of the cooker cover and the cooker body, a joint gap is formed between the cooker cover and the cooker body, and the first air exhaust opening is used for exhausting air after the inner container is cooled by cold air. The electric cooker has good non-coating and non-sticking effect and is convenient to clean.

Description

Electric cooker easy to clean

The present application claims divisional applications of the following chinese patent applications:

the invention discloses an easy-to-clean electric cooker, which is submitted to the Chinese patent office at 12 months and 06 days in 2021, has the application number of 202111472568.

Technical Field

The application belongs to the technical field of kitchen utensils, concretely relates to easily wash electric rice cooker.

Background

In order to achieve the non-stick effect of rice, a non-stick coating is arranged on the inner surface of an inner container of an existing electric cooker, but the non-stick coating is limited in service life and prone to falling off due to high temperature or rubbing, so that the non-stick effect of the inner container cannot be achieved for a long time, the falling coating is prone to being mixed into the rice and being eaten by people by mistake, human health is affected, after the coating falls off, a substrate of the inner container is exposed, the substrate is directly exposed in the cooking environment of high temperature, high humidity and the like in the cooking process, food sanitation and safety are affected, and therefore when the coating falls off, the inner container is not suitable for being used continuously. When the inner container is manufactured without a coating (for example, the inner surface of the inner container is made of stainless steel), the problem that rice is stuck to the cooker and the rice adhered to the surface of the inner container is not easy to shovel by the rice spoon during rice filling is easy to occur.

At present, some electric cookers which are not sticky are disclosed to be realized by cooling the inner container without arranging a coating, but the anti-sticking effect is not good, and even cooling of the inner container cannot be completed, so that the condition of sticking the cooker still exists in some places.

Disclosure of Invention

The application provides an electric rice cooker easy to clean to solve the problem that an electric rice cooker is free of coatings and poor in effect.

The technical scheme adopted by the application is as follows:

the utility model provides an easy washing electric rice cooker, includes a kind of deep pot body, a kind of deep pot lid, inner bag, heating device, the cooling fan that is used for cooking rice, a kind of deep pot body is equipped with the holding chamber, the holding intracavity is arranged in to the inner bag and is located heating device, and a kind of deep pot lid lock seals the holding chamber and forms the culinary art chamber with the inner bag, a kind of deep pot body is including the heat preservation inner cover that is equipped with the air intake, the cooling fan is located air intake department, the heat preservation clearance has between inner bag lateral wall and the heat preservation inner cover inner wall, the air intake is equipped with towards the inner bag lower part and is used for reducing the income wind angle that cold wind got into heat preservation clearance windage, the cold wind that the air intake got into encircles inner bag circulation cooling inner bag lower part from bottom to top, the partial cooling of inner bag lower part contact rice, rice steam condenses to the inner wall of inner bag lower part contact rice and forms the comdenstion water, the rice that the comdenstion water soaks with the inner bag inner wall laminating.

The easy-cleaning electric cooker also comprises the following technical characteristics

And a first air outlet is arranged at the joint of the cooker cover and the cooker body, and the cold air is used for cooling the inner container and then is discharged through the first air outlet.

The air inlet angle is 10-20 degrees, and the air inlet angle is an included angle between the air inlet direction and the vertical direction of the heat preservation inner cover.

The air inlet is provided with an air guide sheet and an air guide channel, and the air guide sheet enables cold air entering the heat insulation gap of the air inlet to have an air inlet angle.

The air guide sheet is provided with an air guide surface, and the air guide surface extends from one side of the cooling fan to one side of the heat preservation gap in an arc shape.

The air guide sheet is provided with an air guide surface, and the air guide surface is arranged by extending the side of the cooling fan to the side of the heat insulation gap in an arc shape.

The air guide channel comprises a first air guide channel for supplying air to the side wall of the inner container by cold air and a second air guide channel for supplying air to the heat preservation gap by the cold air.

The outer side wall of the lower part of the inner container is provided with an arc-shaped side wall and a flat bottom wall, and the part, corresponding to the arc-shaped side wall and the parallel bottom wall, of the inner side wall of the lower part of the inner container is a spherical inner wall.

The lower part of the inner container is provided with a flat bottom part with both horizontally arranged inner and outer walls, and the surface area of the inner wall of the flat bottom part is smaller than that of the outer wall of the flat bottom part.

And a groove or a bulge is arranged on the outer side wall of the lower part of the inner container.

Due to the adoption of the technical scheme, the beneficial effects obtained by the application are as follows:

the cooling fan works, and sucks cold air through the air inlet, and the air is supplied towards the accommodating cavity, the air outlet direction of the air inlet and the vertical direction of the cooker body form a certain included angle, so that the air inlet is provided with an air inlet angle towards the lower part of the inner container and used for reducing the air resistance of the cold air entering the heat preservation gap, and after the cold air with a certain air inlet angle enters the heat preservation gap, the cold air circularly cools the lower part of the inner container around the inner container from top to bottom. When cooked rice is arranged in the inner container, high-temperature water vapor in the rice is condensed on the partial inner wall of the lower portion of the inner container, which is in contact with the rice, and condensed water formed by condensation soaks the rice attached to the inner wall of the inner container.

When forming the comdenstion water, the air current of current cooling fan is difficult to be even acts on the inner bag lower part for each partial inner wall that contacts rice can both maintain the existence of comdenstion water, causes not to be stained with the effect not good.

The cold air flows around the lower part of the inner container first downwards and then upwards at a certain air inlet angle, so that the air flow mainly flows in the vertical direction, but not in the horizontal direction, when the air flow blown out from the air inlet moves downwards, the surface area is gradually reduced to form a convergence effect, the surface area is gradually increased to form a diffusion effect when the air flow moves upwards, the convergence effect enables the cold air to have a large contact area and a small contact area when the cold air is in contact with the inner container, so that the cold air can have a large contact area and absorb more heat when the cold air is relatively cooler, a small contact area and absorb lower heat when the cold air is relatively hotter after the cold air is converged, and the problem that the condensed water contacting rice is uneven due to the fact that the cold air is too cold at the small contact area at the convergence position is avoided; after the convergent effect, the temperature of the cold air is raised, and on the basis, the cold air is diffused and flows upwards, so that the problem of uneven cooling caused by more heat absorption at a small contact area is solved, and the coating-free non-stick effect is good.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a sectional view of an electric rice cooker according to an embodiment of the present application;

FIG. 2 is a view illustrating a cover opening state of the electric rice cooker according to an embodiment of the present application;

FIG. 3 is a partial schematic view of a lower portion of the inner container contacting cooked rice in accordance with one embodiment of the present application;

FIG. 4 is a partial schematic view of a combination of a lower pot cover and a pot body according to an embodiment of the present application;

FIG. 5 is a schematic view of a second steam vent in accordance with an embodiment of the present application;

FIG. 6 is a schematic view of a lower liner according to one embodiment of the present application;

FIG. 7 is a schematic view of a bladder having a spherical inner wall according to one embodiment of the present application;

FIG. 8 is a schematic view of a liner with a recess according to one embodiment of the present disclosure;

FIG. 9 is an enlarged partial view of a cooling fan on the lower heat retaining inner cover according to an embodiment of the present application;

FIG. 10 is a schematic view of a cooling fan according to an embodiment of the present disclosure.

Wherein:

10 a pot body; 101 heat preservation inner cover; 102 outer pot shell; 103 a base; 104, turning a pan; 105 a heating device; 106 an accommodating cavity; 107 heat preservation gaps; 108 air inlets; 109 an air suction opening; 110 a first exhaust port; 111 bottom gap; 112 air outlet channel; 113 a second air outlet; 114 an internal cavity; 115 a support member;

20, a pot cover;

30 of inner container; 301 a cooking cavity; 302 the lower part of the inner container; 303 waist part of the liner; 304 at the upper part of the inner container; 305 flanging the inner container; 306 an arc-shaped sidewall; 307 a flat bottom wall; 308 a spherical inner wall; 309 a groove; 310, a flat bottom;

40 a cooling fan; 41 air guide sheets; 42 air guide channels; 43 air guide surfaces; 44 upper air guiding sheets; 45 lower air guide pieces; 46 air guide gaps; 421 a first wind guide channel; 422 a second wind guide channel;

50, cooking rice;

60 condensing the water.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, references to the description of the terms "implementation," "embodiment," "one embodiment," "example" or "specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1-3, an easy-to-clean electric rice cooker comprises a cooker body 10, a cooker cover 20, an inner container 30 for cooking rice, a heating device 105, and a cooling fan 40, wherein the cooker body 10 is provided with an accommodating cavity 106, the inner container 30 is arranged in the accommodating cavity 106 and positioned on the heating device 105, the cooker cover 20 is fastened and sealed to the accommodating cavity 106 and form a cooking cavity 301 with the inner container 30, the cooker body 10 comprises an inner heat insulation cover 101 provided with an air inlet 108, the cooling fan 40 is arranged at the air inlet 108, a heat insulation gap 107 is formed between the outer side wall of the inner container 30 and the inner wall of the inner heat insulation cover 101, the air inlet 108 is provided with an air inlet angle facing the lower portion 302 of the inner container for reducing the wind resistance of cold air entering the heat insulation gap 107, the cold air entering from the air inlet 108 circulates around the inner container 30 to cool the lower portion 302 of the inner container from bottom to top, the portion of the lower portion 302 of the inner container contacting with the rice 50 is cooled, steam in the rice 50 condenses to form condensed water 60 contacting with the inner wall of the lower portion 302 of the rice to form the condensed water 60, and the rice 60 is attached to the inner container 30.

It should be noted that, the pot cover 20 and the pot body 10 may be hinged or separated, a user may open the pot cover 20 and close the pot cover 20 to take and place the inner container 30 for cooking rice or take rice, the inner container 30 may be placed in the accommodating cavity 106 of the pot body 10 in a taking and placing manner, and heating is achieved through the heating device 105 at the bottom, in this embodiment, the heating device 105 is an electromagnetic wire coil, and the inner container 30 is heated through an alternating magnetic field generated when the electromagnetic wire coil is energized; the containing cavity 106 for containing the inner container 30 is formed in the arranged inner heat preservation cover 101, the heating device 105 is fixed at the bottom of the inner heat preservation cover 101, for the heating device 105 being an electromagnetic wire coil, the bottom side of the inner heat preservation cover 101 is provided with a bottom opening, the electromagnetic wire coil is connected to the bottom opening, so that the electromagnetic wire coil is directly connected with the inner heat preservation cover 101, the inner heat preservation cover 101 and the electromagnetic wire coil are combined to form the containing cavity 106, at the moment, after the cooker cover 20 is covered, the containing cavity 106 is not communicated with the outside except for the combination part of the cooker cover 20 and the cooker body 10, and a temperature measuring hole and a water leakage hole at the bottom can be communicated with the outside space, so that the whole containing cavity 106 is relatively closed, if the heating device 105 is a heating disc, more openings exist at the bottom of the whole containing cavity 106, and the like a hole for the wiring terminal to be led out of the inner heat preservation cover 101.

The cooker body 10 further comprises a pot ring 104, an outer pot shell 102 and a base 103, wherein the outer pot shell 102 is arranged on the outer side of the heat-insulating inner cover 101, the pot ring 104 is connected with the base 103 in order to fix the heat-insulating inner cover 101 and the outer pot shell 102, the outer pot shell 102 is arranged between the pot ring 104 and the base 103, the heat-insulating inner cover 101 is arranged on the pot ring 104, and an inner cavity 114 is arranged between the outer pot shell 102 and the heat-insulating inner cover 101. For the electric cooker with the heating device 105 being an electromagnetic wire coil, the base 103 is provided with an air suction opening 109, and the cooling fan 40 can suck air through the air suction opening 109 on the base 103. In some embodiments, the air inlet 109 may be disposed on the outer casing 102 at a position corresponding to the height of the air inlet 108.

As shown in fig. 6, the inner container 30 includes a container waist portion 303, a container lower portion 302 and a container upper portion 304; the inner bladder waist 303 has a diameter greater than the inner bladder lower portion 302, and in some embodiments, the inner bladder waist 303 also has a diameter greater than the inner bladder upper portion 304, and the inner bladder lower portion 302 includes an arcuate sidewall 306 and a flat bottom wall 307, the specific bladder shape being described in detail below.

The traditional inner container is not cooled, the temperature difference between the inside and the outside of the inner container does not exist, or the temperature of the inner container serving as a heat source is sometimes higher than the temperature of the rice and is not enough for the inner wall of the part of the lower part 302 of the inner container contacting the rice to be condensed into condensed water, so that the rice is burnt and stuck to the pot, and the inner container is difficult to clean if not stained with a coating. In this embodiment, the cooling of the inner container is completed by the cooling fan 40, which specifically includes:

referring to fig. 1, the cooling fan 40 operates to suck cold air through the air inlet 108 and supply air into the accommodating cavity 106, the air outlet direction of the air inlet 108 forms a certain included angle with the vertical direction of the cooker body 10, so that the air inlet 108 is provided with an air inlet angle facing the lower portion 302 of the inner container to reduce the wind resistance of the cold air entering the heat-insulating gap 107, and after the cold air with a certain air inlet angle enters the heat-insulating gap 107, the cold air circularly cools the lower portion 302 of the inner container around the inner container from top to bottom. When cooked rice is arranged in the inner container 30, high-temperature water vapor in the rice is condensed on the partial inner wall of the lower portion 302 of the inner container, which is in contact with the rice, condensed water formed by condensation soaks the rice attached to the inner wall of the inner container, the temperature difference between the inside and the outside of the inner container 30 is low and the inside and the outside is high after cooling, namely, the temperature gradually rises from the outside to the inside, so that the condensed water continuously exists on the partial inner wall in contact with the rice to soak the rice, avoid non-contact and facilitate cleaning.

When the condensed water is formed, the air flow of the existing cooling fan 40 is difficult to uniformly act on the lower portion 302 of the inner container, so that the inner wall of each portion contacting the rice can maintain the existence of the condensed water, and the non-sticking effect is poor.

A certain air inlet angle can reduce the wind resistance entering the heat preservation gap 107, improve the air intake, and simultaneously cool the lower part 302 of the liner firstly, and the cold air circularly cools the lower part 302 of the liner from bottom to top, namely the cold air is blown down from the waist 303 of the liner until the cold air surrounds the lower part 302 of the liner, in the vertical direction, because the diameter of the waist 303 of the liner is usually larger and gradually shrinks the diameter of the liner downwards, the smaller the surface area Shu is when the air flow moves downwards, the closer the bottom of the liner 30 is, and the larger the surface area Shu is when the air flow moves upwards, the farther the bottom of the liner 30 is; in the horizontal direction, due to the existence of the cylindrical surface, when the air flow moves towards the left side and the right side, the air flow which just flows out of the air inlet 108 is closer to one side of the central line of the inner container 30, the surface area is gradually increased, after the air flow crosses the central line, the surface area is gradually reduced along with the back of one side far away from the central line, a certain air inlet angle is formed, so that the cold air firstly flows downwards and then upwards around the lower portion 302 of the inner container, the air flow mainly flows in the vertical direction, but not in the horizontal direction, when the air flow blown out of the air inlet 108 moves downwards, the convergence effect is formed due to the gradual reduction of the surface area, the surface area is gradually increased when the air flow moves upwards to form a diffusion effect, the convergence effect enables the cold air to have a large contact area when contacting the cold air and the inner container 30 to contact, the contact area is large firstly, the contact area is small, and the cold air can have a large contact area and absorb more heat when the cold air is in a relatively hot place, and the condensate water is prevented from being unevenly contacted, and the condensate water is prevented from being excessively heated and the condensate water is excessively condensed; after the convergent effect, the cold air is heated, and on the basis, when the cold air is diffused and flows upwards, the problem of uneven cooling caused by more heat absorption at a small contact area can be solved.

As shown in fig. 4, in order to form a first-to-last air flow, a first air outlet 110 is provided at a joint of the pot cover 20 and the pot body 10, a joint gap is provided between the pot cover 20 and the pot body 10, the first air outlet 110 is formed in the joint gap, and the cold air is discharged through the first air outlet 110 after cooling the inner pot 30. The first air outlet 110 is used for exhausting air, which means that the bottom and the side wall of the accommodating cavity 106 are closed as much as possible, so that the number of holes is reduced, and airflow is prevented from being left from the bottom and the side wall. Preferably, the heating device 105 is the electromagnetic wire coil mentioned above, and the electromagnetic wire coil is installed at the bottom opening of the inner heat-insulating cover 101.

In this embodiment, as shown in fig. 3, the inner container 30 is placed in the accommodating cavity 106 of the cooker body 10, the heating device 105 is disposed at the lower side of the inner heat-insulating cover 101, a bottom gap 111 is formed between the heating device 105 and the inner container 30, in order to form the bottom gap 111, the inner container 30 has an inner container flange 305, an air outlet channel 112 is formed at the matching position of the inner container flange 305 and the cooker body 10, and the air flow in the heat-insulating gap 107 enters the first air outlet 110 through the air outlet channel 112. The air outlet channel 112 is arranged to change the air flow direction under the blocking of the liner flange 305, so that the hot air can more conveniently enter the first air outlet 110 and be discharged.

In some alternative embodiments of this embodiment, as shown in fig. 5, a second air outlet 113 is disposed beside the cooling fan 40, the second air outlet 113 is communicated with the inner cavity 114 between the inner heat-insulating cover 101 and the outer pot shell 102, heat dissipation holes communicated with the inner cavity 114 are disposed at the bottom of the pot body 10, and after the inner pot 30 is cooled by cold air, the cold air is discharged into the inner cavity 114 through the second air outlet 113 and then discharged through the heat dissipation holes.

Lateral means disposed close to the cooling fan 40, and at a distance of not more than 10cm from the cooling fan 40, and the height of the second air outlet 113 may be equal to the height of the cooling fan 40, and of course, in some embodiments, the second air outlet 113 may be oriented at other positions.

As shown in fig. 2 and 4, the pot ring 104 has a supporting member 115, the supporting member 115 is disposed at the matching position, and the inner container 30 is supported on the supporting member 115 to form the air outlet channel 112. The supporting pieces 115 are arranged in a plurality of ways, the air outlet channel 112 is formed between the adjacent supporting pieces 115, the air outlet channel 112 is formed through the supporting pieces 115, the inner container 30 can be conveniently hung on the pot ring 104, not only can an isolation gap be formed, but also the air outlet channel 112 can be formed, and the structure is simple.

The process of forming the condensed water requires a cooling time, which cannot be excessively long, and in order to shorten the cooling time, a method of reducing the surface area of the portion of the lower portion 302 of the inner container contacting the cooked rice as much as possible, thereby reducing the power required for forming the wetting condensed water, may be adopted.

The process of forming the condensed water is estimated and analyzed, and the temperature of the inner container 30 is about 100-110 ℃ and the temperature of the rice is 100 ℃ at the end of cooking. The estimation process considers that the sum of the heat released by the temperature reduction of the inner container 30 and the heat released by the condensation of the water vapor is equal to the heat removed by the air blown by the cooling fan 40.

Take 150L/min of cold air delivered by the cooling fan 40 and the temperature of the inner container reduced to 95 ℃ as an example, delta T _{Inner container} Taking 15 ℃, and heating cold air to rise temperature delta T _{Air (W)} The mixture was taken at 30 ℃.

Heat Q released by cooling inner container _{Inner container} ＝m _{Inner container} c _{Inner container} ΔT _{Inner container} ；

Heat Q released by condensation of water vapour _{Aqueous layer} ＝m _{Aqueous layer} △H _{Water (I)} ；

The quantity of heat taken away per minute by the cold air is Q _{Air (a)} ＝m _{Air (W)} c _{Air (a)} ΔT _{Air (a)} ；

The time required for the formation of condensed water is (Q) _{Inner container} +Q _{Aqueous layer} )/Q _{Air (a)} ；

Table of relevant parameters and values:

according to the estimation, a condensed water layer can be formed after about 4 minutes of cooling time, the time for prolonging 4 minutes belongs to the acceptable range of rice cooking, the condensed water layer can be added into the rice cooking, and a small fan with the diameter of about 50mm can be used for conveying a fan with the flow rate of 150L/min, so that the scheme has high applicability.

The test of a sample making machine proves that the inner surface of the liner can be cooled to about 95 ℃ by the cooling fan 40 for 3-5 minutes, and a water layer is formed on the inner wall surface of the liner, so that the rice is not easy to adhere to the liner.

Through the calculation, the material, the shape and the weight of the inner container influence the area of the water layer, the specific heat capacity of the inner container, the quality of the inner container and the temperature rise of cold air, so that the cooling time can be controlled by improving the structure of the inner container and the like.

Specifically, in some embodiments, as shown in fig. 7, the outer sidewall of the lower portion 302 of the inner container has an arc-shaped sidewall 306 and a flat bottom wall 307, and the portion of the inner sidewall of the lower portion of the inner side of the arc-shaped sidewall 306 corresponding to the arc-shaped sidewall and the parallel bottom wall is a spherical inner wall 308; the bulbous inner wall 308 can minimize the surface area of the lower portion 302 of the bladder that contacts the rice, thereby minimizing the cooling time. The arc-shaped side wall 306 means that the section of the outer side wall of the inner container in the up-down direction is arc-shaped, the arc-shaped side wall 306 rotates around a shaft to form an arc surface, the arc surface of the arc can be an arc line with different curvatures, but not an arc line with the same curvature, which means that the curved surface of the lower part 302 of the inner container can be an aspheric surface; the flat bottom wall 307 is used for the liner to be horizontally placed on a table top, and the flat bottom wall 307 means that the outer side wall of the liner is horizontally arranged. Through "outer flat incurvate", not only can not influence getting of inner bag and put the experience, also can be because the setting of globular inner wall 308 will make under the same rice volume, the surface area of rice and inner bag contact is minimum to reduce the energy that the vapor condensation released, and then shorten the cooling time.

Further, in some embodiments, as shown in fig. 7, a wall thickness B1 between the spherical inner wall 308 and the flat bottom wall 307, a wall thickness B2 between the spherical inner wall 308 and the arc-shaped side wall 306, and B1 ≦ B2. B1 and B2 can be the minimum thickness here, also can be average thickness, generally speaking, courage wall thickness is in 0.5 to 10mm inequality, can set up according to the circumstances, when B1 is less than or equal to B2 for the inner bag of "outer flat incurvate" is frivolous as far as possible, reduces the weight of inner bag, and then can reduce the heat accumulation ability of inner bag, thereby the inner bag of being convenient for cools down to form the comdenstion water fast.

For the convenience of processing, the inner container is formed by a stamping forming process, so that the wall thickness of the inner container is consistent, and the shapes of the inner wall and the outer wall are also consistent, for this reason, in some embodiments, as shown in fig. 8, the lower portion 302 of the inner container has a flat bottom portion 310 in which both the inner wall and the outer wall are horizontally disposed, the surface area of the inner wall of the flat bottom portion 310 is smaller than that of the outer wall thereof, and in order to make the surface area of the inner wall smaller than that of the outer wall thereof, a groove 309 or a protrusion may be provided on the outer side wall of the lower portion 302 of the inner container. Because the outer wall of the flat bottom 310 is provided with the groove 309 or the protrusion, the surface area of the outer wall of the flat bottom 310 is increased, so that the temperature rise of the cold air is increased, the heat taken away by the cold air per minute is increased, and the cooling time is shortened.

In some embodiments, a groove 309 or a protrusion may be disposed on the arc-shaped side wall 306 or the flat bottom wall 307, so as to increase the surface area of the outer side of the lower portion 302 of the inner container, and at this time, the difference between the inner surface area and the outer surface area of the inner container, which is "flat outside and curved inside", is further increased, so as to form the arrangement of the inner surface area and the outer surface area "large outside and small inside" of the portion contacted by the rice, thereby accelerating the formation of the condensed water.

In order to improve the cooling effect, the volume of the cool air may be adjusted, and the cooling fan 40 may reduce the intake resistance to increase the volume of the cool air and reduce the cooling time, assuming that the rated volume of the cool air is 200L/min due to the duct resistance, and the actual loss will reduce the volume of the cool air to 200L/min or less.

As shown in fig. 9, the air inlet 108 is provided with an air guiding sheet 41 and an air guiding channel 42, the air guiding sheet 41 makes the cold air entering the heat insulating gap 107 from the air inlet 108 have an air inlet angle, preferably, the air inlet angle of the air guiding sheet 41 entering the heat insulating gap 107 is between 10 and 20 degrees, and the included angle is an included angle between a tangential direction of the air guiding sheet 41 at the air inlet 108 and a vertical direction of the heat insulating inner cover 101. In this embodiment, the wind inlet angle is 18 degrees, and in some alternative embodiments, the included angle may be 10, 12, 15, 20 degrees, etc. When the wind inlet angle is less than 10 degrees, the wind guide channel 42 is inconvenient for mould forming and has large processing difficulty; if the temperature is more than 20 ℃, cold air can act on the inner container wall more, and then the wind resistance is increased.

The air guide sheet 41 is provided with an air guide surface 43, the air guide surface 43 extends from one side of the cooling fan 40 to one side of the heat preservation gap 107 in an arc shape, so that when cold air blown out by the cooling fan 40 passes through the air guide sheet 41, the cold air can smoothly transit to a preset air inlet angle from the horizontal direction to enter the heat preservation gap 107, the air volume loss caused by the unreasonable design of the air guide sheet 41 is avoided, the air resistance passing through the air guide sheet 41 is further reduced, the air inlet volume is increased, and the cooling efficiency is further improved.

The upper air guiding sheet 44 and the lower air guiding sheet 45 constituting the air guiding passage 42 do not overlap in projection in the horizontal direction, for example, the lower end portion of the upper air guiding sheet 44 and the upper end portion of the lower air guiding sheet 45 have an air guiding gap 46 in the height direction of the inner heat insulating cover 101, and the presence of the air guiding gap 46 facilitates the molding of the air guiding sheet 41 and also reduces the wind resistance of the air guiding passage 42.

As shown in fig. 10, the air guide passage 42 includes a first air guide passage 421 for supplying cold air to the side wall of the inner container 30, and a second air guide passage 422 for supplying cold air to the heat insulating gap 107; each air guide channel 42 is located at the height position of the arc-shaped side wall 306 of the inner container lower portion 302, wherein the first air guide channel 421 is located at the position with the largest container diameter of the inner container lower portion 302, and the air inlet angle of the first air guide channel is intersected with the arc-shaped side wall 306, so that cold air of the first air guide channel 421 can be supplied to the position of the inner container waist 303, the surface area is large due to the large container diameter of the side wall at the position of the waist, the air can be supplied to the position through part of the air guide channels to be cooled, a convergence effect is formed conveniently, the cooling uniformity of the inner container lower portion 302 is ensured, the air inlet angle of the second air guide channel 422 is arranged away from the arc-shaped side wall 306, so that the cold air of the second air guide channel 422 can be supplied to the heat preservation gap 107 instead of supplying air to the inner container wall, and therefore, the air resistance can be reduced, the air inlet amount of cold air is increased, and the cooling time is further shortened. There are a plurality of first wind guiding channels 421 and second wind guiding channels 422, and in this embodiment, there are 2 first wind guiding channels 421 and second wind guiding channels 422 respectively.

The cooling fan 40 is arranged at the diagonal position of the outer pot shell 102, and the space of the inner cavity 114 between the outer pot shell 102 and the inner heat-insulating cover 101 is the largest at the diagonal position, so that the cooling fan 40 can suck air conveniently, the wind resistance is reduced, and the air intake is increased.

Where not mentioned in this application, this may be achieved using or taking advantage of existing technology.

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An easy-cleaning electric rice cooker comprises a cooker body, a cooker cover, an inner container for cooking rice, a heating device and a cooling fan, wherein the cooker body is provided with a holding cavity, the inner container is arranged in the holding cavity and positioned on the heating device, the cooker cover is buckled and sealed with the holding cavity and the inner container to form a cooking cavity,

cooling the inner container through the cooling fan, cooling the part of the lower part of the inner container, which is contacted with the rice, to form condensed water, and soaking the rice attached to the inner wall of the inner container with the condensed water;

a first air exhaust opening is arranged at the joint of the cooker cover and the cooker body, a joint gap is arranged between the cooker cover and the cooker body, the combination gap forms a first exhaust port, and cold air is cooled to the inner container and then is exhausted through the first exhaust port.

2. The easy-to-clean electric cooker as claimed in claim 1,

the cooker comprises a cooker body and is characterized in that the inner container is provided with an inner container flanging, an air outlet channel is arranged at the matching position of the inner container flanging and the cooker body, the cooker body comprises a heat preservation inner cover, a heat preservation gap is arranged between the outer side wall of the inner container and the inner wall of the heat preservation inner cover, and air flow in the heat preservation gap enters the first air outlet through the air outlet channel.

3. The easy-to-clean electric cooker as claimed in claim 1,

the cooker body is including being equipped with heat preservation inner cover and second air exit, the second air exit intercommunication interior cavity between heat preservation inner cover and the outer pot shell, a kind of deep pot body bottom is equipped with the louvre of intercommunication interior cavity, cold wind cooling behind the inner bag, the warp the second air exit is discharged into interior cavity, the warp again the louvre is discharged.

4. The easy-to-clean electric cooker as claimed in claim 3,

the second air outlet is arranged at the side of the cooling fan, the side is close to the cooling fan, and the distance from the second air outlet to the cooling fan is not more than 10cm.

5. The easy-to-clean electric cooker as claimed in claim 3,

the height position of the second air outlet is flush with that of the cooling fan.

6. The easy-to-clean electric cooker as claimed in claim 2, wherein said cooker body further comprises a cooker ring, a support member is provided on said cooker ring, said support member is provided at said fitting portion, and said inner container is supported on said support member to form said air outlet channel.

7. The easy-to-clean electric cooker as claimed in claim 6, wherein the supporting members are provided in plurality, and an air outlet channel is formed between adjacent supporting members.

8. The easy-to-clean electric cooker as claimed in claim 1,

9. The easy-to-clean electric cooker as claimed in claim 1,

the lower part of the inner container is provided with a flat bottom part with both inner and outer walls, and the surface area of the inner wall of the flat bottom part is smaller than that of the outer wall of the flat bottom part.

10. The easy-to-clean electric cooker as claimed in any one of claims 8 to 9,