CN215383345U

CN215383345U - Cooking utensil

Info

Publication number: CN215383345U
Application number: CN202120838330.3U
Authority: CN
Inventors: 朱泽春; 简威
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-01-04
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a cooking appliance, which comprises a pot body with a cooking cavity and a heating unit arranged below the cooking cavity, wherein the heating unit comprises a heating disc and a centrifugal fan arranged below the heating disc, the heating disc comprises a disc body and a heating pipe, the periphery of the disc body is provided with a heat collecting part protruding towards one side of the centrifugal fan, at least part of area of the heating pipe is covered and fixed in the heat collecting part, the centrifugal fan comprises a first fan blade forming an included angle with the horizontal plane, and the upper edge of the first fan blade is higher than the lower edge of the heat collecting part. At least partial region cladding of heating tube is fixed in the heat accumulation portion, therefore when heating, the temperature of heat accumulation portion is higher, and the top edge of first flabellum is higher than the lower limb of heat accumulation portion, and when can making centrifugal fan rotate, the air current that first flabellum was blown to the periphery carries out abundant contact with the surface of heat accumulation portion to as much as possible takes away the heat of heat accumulation portion, makes the temperature of air current higher, improves the heating effect to food.

Description

Cooking utensil

Technical Field

The utility model belongs to the technical field of kitchen utensils, and particularly relates to a cooking utensil.

Background

In general, a pot with an air-frying function (such as an air fryer and a multifunctional pot) is provided with a heating device and a centrifugal fan on a pot body or a pot cover, and the centrifugal fan blows heat of the heating device into a cooking cavity to form hot air circulation in the cooking cavity to heat food.

However, generally, the heating device and the centrifugal fan are coaxially arranged, so that the heating device and the centrifugal fan are arranged up and down, and the centrifugal fan blows airflow from the axial region to the periphery, so that the airflow cannot be in full contact with the heating device, and therefore the airflow cannot well carry away heat of the heating device, the temperature of the airflow cannot reach an ideal temperature value, and the heating efficiency is low.

For a multifunctional pot with multiple cooking functions, a heating pipe and a heating plate are usually arranged in the multifunctional pot, when the air frying function is selected, the heating pipe generates heat, a centrifugal fan is started, hot air circulation is formed in the pot, food is heated by hot air flow, when the cooking function is selected, the heating plate generates heat, and the bottom of the pot body is in contact with the heating plate to realize heat transfer. However, the multifunctional cooker with the structure has the defects of various heating components, complex internal structure, heavier overall weight and inconvenient use.

If a single heating source is adopted, for example, the heating plate is used for heating, the heat is concentrated on the heating plate, and when the air-frying function is used, the centrifugal fan and the heating plate are arranged up and down, so that the airflow blown by the centrifugal fan cannot be in comprehensive contact with the heating plate, the temperature of the airflow is lower, and the heating effect on food is poor.

In addition, because the structure of the heating plate is complicated, and the surface of the heating plate is uneven, if the centrifugal fan is closer to the heating plate, the heating plate is easy to interfere with the rotation of the centrifugal fan, and the normal work of the centrifugal fan is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention provides a cooking appliance to solve at least one of the above technical problems.

The technical scheme adopted by the utility model is as follows:

the utility model provides a cooking utensil, including the pot body that has the culinary art chamber, and set up in the heating unit of culinary art chamber below, heating unit including generate heat set and set up in the centrifugal fan of the dish below that generates heat, the dish that generates heat includes disk body and heating tube, the periphery of disk body is provided with the orientation the convex portion of gathering heat in centrifugal fan one side, the regional cladding of heating tube at least is fixed in gather in the heat portion, centrifugal fan includes the first flabellum that has the contained angle with the horizontal plane, the last border of first flabellum is higher than gather the lower border of heat portion.

The lower edge of the first fan blade is lower than the lower edge of the heat gathering part.

The first fan blade is provided with a first height in the vertical direction, and the central line of the first height is flush with the lower edge of the heat gathering part.

The heating tube is provided with a coating section and an exposed section which are connected with each other, the coating section is coated and fixed inside the heat collecting part, the exposed section is exposed on the outer surface of the tray body, and the upper edge of the first fan blade is higher than the lower edge of the exposed section.

The exposed section is provided with a plurality of sections at intervals along the extending direction of the heating tube, and the tray body and the heat collecting part are matched with each other at the exposed section to form an air outlet channel.

One side of the heat gathering part facing the center of the tray body is provided with a first flow guide arc surface.

The cooking utensil is still including arranging in the internal bowl of bowl reflecting housing, the heating unit set up in the reflecting housing, the inner wall of reflecting housing is provided with second water conservancy diversion cambered surface.

The central area of the tray body is provided with a plurality of backflow ports, the backflow ports are arranged at intervals around the circumference of the tray body, and the backflow ports are bent around the central line of the tray body towards the same rotating direction.

The centrifugal fan further comprises a second fan blade which is horizontally arranged, and the second fan blade is fixedly connected to the lower edge of the first fan blade.

The cooking appliance further comprises a control unit, a first inner container and a second inner container, wherein the first inner container and the second inner container are selectively arranged in the cooking cavity, the first inner container is arranged in the cooking cavity, the control unit controls the centrifugal fan to run, and the second inner container is arranged in the cooking cavity, and the control unit controls the centrifugal fan to stop.

Due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. the cooking utensil is heated by the heating plate, the heating plate comprises the plate body and the heating pipe, and at least part of area of the heating pipe is covered and fixed in the heat gathering part, so that the temperature of the heat gathering part is higher during heating, the upper edge of the first fan blade is higher than the lower edge of the heat gathering part, and the air flow blown by the first fan blade to the outer periphery can be fully contacted with the outer surface of the heat gathering part when the centrifugal fan rotates, so that the heat of the heat gathering part is taken away as much as possible, the temperature of the air flow is higher, and the heating effect on food is improved.

In addition, the heating plate is arranged below the cooking cavity, compared with a cooking appliance with a heating structure arranged above the object placing part, the heating plate is arranged below the object placing part, so that the possibility of multiple cooking functions is provided for the cooking appliance, and when different kinds of utensils (such as a frying basket, a baking tray, an inner container for realizing stewing and boiling and the like) for containing food are placed into the cooking cavity, the cooking appliance can realize different cooking functions, so that the integration of functions is realized, the diversified requirements are met, and the user experience is enjoyed.

2. As a preferred embodiment of the present invention, the first fan blade has a first height in the vertical direction, a center line of the first height is flush with the lower edge of the heat collecting portion, so that a half of the first fan blade in the height direction is located above the lower edge of the heat collecting portion, an air flow blown by the part of the fan blade flows through the heat collecting portion to take away heat of the heat collecting portion, and a high-temperature air flow is generated.

3. As a preferred embodiment of the present invention, the heating tube has a cladding section and an exposed section that are connected to each other, the cladding section is cladded and fixed inside the heat collecting portion, the exposed section is exposed on the outer surface of the tray body, and the upper edge of the first blade is higher than the lower edge of the exposed section. And part of air flow takes away the heat of the exposed section through an air outlet channel formed by matching the tray body and the heat accumulation part at the exposed section without bypassing the surface of the heat accumulation part, so that the air flow flowing path is shortened, and the heat loss is reduced. The other part of the airflow flows through the heat gathering part to take away the heat transferred to the heat gathering part by the cladding section, so that the flow speed and the temperature of the airflow are ensured. And the setting of exposed section, compare in the cladding section, exposed section is that the heating tube directly generates heat, and efficiency of generating heat and temperature are all higher than the cladding section, to the air-fry mode, need use heated air circulation to realize the culinary art mode of food culinary art, help promoting culinary art efficiency by a wide margin.

In addition, when the heating plate is in contact with the pot liner to cook, the coating section is arranged in the heating part, so that heat can be quickly transferred to the heating plate, the surface of the heating plate can be quickly heated, the heat can be transferred to the pot liner, the cooking appliance can keep high heating efficiency in various cooking modes, and the cooking appliance is further provided with various cooking functions.

4. In a preferred embodiment of the present invention, a plurality of backflow ports are provided in a central region of the disk body, the plurality of backflow ports are arranged at intervals around a circumferential direction of the disk body, and the backflow ports are curved in the same rotational direction around a center line of the disk body. The backward flow mouth interval arrangement has reduced the trompil area in the middle of the disk body helps promoting on the one hand the structural strength of disk body, on the other hand can also prevent that user's finger from missing the backward flow mouth, just the backward flow mouth is crooked for the air current is with whirlwind route backward flow, whirlwind backward flow with centrifugal fan's centrifugal air supply cooperation has further promoted the flow rate of air current, has guaranteed the thermal efficiency.

5. As a preferred embodiment of the present invention, the centrifugal fan further includes a second blade horizontally disposed, and the second blade is fixedly connected to a lower edge of the first blade. The setting of second flabellum makes the air supply in-process on the one hand, makes as much as possible air current flow through gather the heat portion, avoids the air current downward flow to walk around and gather the heat portion, lead to the temperature of air current lower, the heating effect is poor, and on the other hand, when the air current backward flow to this moment, the second flabellum can promote its flow direction once more gather the direction of heat portion, begin next circulation, and then improve thermal cycle efficiency.

6. As a preferred embodiment of the present invention, the cooking appliance further includes a control unit, and a first inner container and a second inner container selectively placed in the cooking cavity, wherein the control unit controls the centrifugal fan to operate when the first inner container is placed in the cooking cavity, and controls the centrifugal fan to stop when the second inner container is placed in the cooking cavity. The heating plate can be in contact with the two inner containers for heating, the centrifugal fan is arranged in the first inner container to work in the cooking cavity, airflow circulation is realized in the cooking cavity, hot airflow circulation heating is carried out, a heating source is realized to meet various cooking modes, one pot is multifunctional, and user experience is joyful.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a sectional view of the cooking appliance in an embodiment of the present invention, wherein the first inner container is disposed in the cooking cavity;

fig. 2 is a sectional view of the cooking appliance according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of the heating plate according to an embodiment of the present invention;

FIG. 4 is a top view of the heat generating plate of FIG. 3;

fig. 5 is a sectional view of the heat generating plate of fig. 3;

fig. 6 is a schematic structural diagram of the centrifugal fan according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of the oil retainer according to an embodiment of the present invention;

fig. 8 is a sectional view of the cooking appliance in accordance with still another embodiment of the present invention, wherein the second inner container is disposed in the cooking cavity.

Wherein:

1, a pan body;

2, a heating plate; 21 a tray body; 211 a reflow region; 212 heat transfer area; 22 a heat collecting part; 23 a heat generating tube; 231 a cladding section; 232 bare section; a 24 return port; 241 proximal end; 242 distal end; 25 a first flow guiding cambered surface; 26 air outlet channels; 27 raised;

3 centrifugal fan; 31 a first fan blade; 32 second fan blades;

4 an oil blocking assembly; 41, connecting an oil basin; 411 a first air inlet; 412 a first return air opening; 42 oil blocking member; 421 oil blocking parts; 422 a flow through port;

5, a reflector; 51 a second diversion cambered surface;

6 a first inner container; 61 a second air inlet; 62 a second air return opening;

7 the second inner container.

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 invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. 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 the present invention, unless otherwise expressly stated or limited, 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 an intermediate. In the description herein, references to 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 utility model. 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. 1-8, a cooking utensil, including the pot body 1 that has the culinary art chamber, and set up in the heating unit of culinary art chamber below, the heating unit includes heating plate 2 and set up in centrifugal fan 3 of heating plate 2 below, heating plate 2 includes disk body 21 and heating tube 23, the periphery of disk body 21 is provided with the orientation the convex heat portion 22 that gathers in centrifugal fan 3 one side, the regional cladding of heating tube 23 at least is fixed in gather in the heat portion 22, centrifugal fan 3 includes and has the first flabellum 31 of contained angle with the horizontal plane, the last border of first flabellum 31 is higher than gather the lower border of heat portion 22.

It should be noted that the type of the cooking utensil is not limited in the present invention, and the cooking utensil may be a cooking utensil with a single air-frying function, such as an air fryer. Preferably, the cooking appliance is a multifunctional cooking appliance having a plurality of cooking modes including air-frying, cooking, and the like. The heating plate 2 is adopted as a single heating source in the cooking appliance, so that the internal structure of the cooking appliance is simplified, and the weight of the whole cooking appliance is reduced.

In addition, the angle between the first fan blade 31 and the horizontal plane is not specifically limited in the present invention, as a specific embodiment, as shown in fig. 6, the first fan blade 31 is perpendicular to the horizontal plane, that is, the angle between the first fan blade 31 and the horizontal plane is 90 °, of course, the first fan blade 31 may also form other angles with the horizontal plane, or the first fan blade 31 may also be in an irregular shape, that is, the angle between the first fan blade 31 and the horizontal plane at different positions is different, and is not specifically limited herein, as long as the air flow can be blown to the periphery from the center line of the centrifugal fan 3.

At least a partial region of the heating tube 23 is fixed in the heat collecting part 22 in a covering manner, so that the temperature of the heat collecting part 22 is high during heating, the upper edge of the first fan blade 31 is higher than the lower edge of the heat collecting part 22, and when the centrifugal fan 3 rotates, the air flow blown to the outer periphery by the at least partial region of the first fan blade 31 is in full contact with the outer surface of the heat collecting part 22, so that the heat of the heat collecting part 22 is taken away as much as possible, the temperature value of the air flow is increased, and the heating effect on food is improved.

Compared with a cooking appliance with a heating structure arranged above an object placing part, the heating disc 2 arranged below the cooking cavity provides possibility for the cooking appliance to have various cooking functions, and when different kinds of utensils (such as a frying basket, a baking tray, an inner container for realizing stewing and the like) for containing food are placed into the cooking cavity, the cooking appliance can realize different cooking functions, so that the integration of functions is realized, diversified requirements are met, and user experience is enjoyed.

In addition, because hot air is lighter and cold air is heavier, hot air is heated the come-up and heats food, and the temperature reduces with food heat exchange back to sink, therefore the mode of underneath type heating can conform to the flow characteristic of cold and hot air current, reduces be used for driving the air current mobile centrifugal fan 3's consumption, both practiced thrift the energy, improve heating efficiency again.

Further, the relative position of the first fan blade 31 and the heat generating plate 2 may be one of the following embodiments:

the first implementation mode comprises the following steps: in the present embodiment, as shown in fig. 2, the lower edge of the first blade 31 is higher than the lower edge of the heat collecting portion 22.

Since the heat accumulating part 22 protrudes toward the centrifugal fan 3, a central region of the heat generating tray 2 is formed with an installation space for installing the centrifugal fan 3. The lower edge of the first blade 31 is higher than the lower edge of the heat collecting portion 22, that is, the first blade 31 is located in the installation space.

In this embodiment, all the airflow blown by the first fan blade 31 to the outer periphery flows through the outer surface of the heat collecting portion 22 and completely and fully contacts with the heat collecting portion 22, so that the heat collecting portion 22 can transfer as much heat as possible to the airflow, the temperature rise of the airflow is accelerated, the temperature value of the airflow rapidly reaches the temperature value meeting the air-explosion requirement, and the heating efficiency is improved.

The second embodiment: in the present embodiment, as shown in fig. 1, the lower edge of the first blade 31 is lower than the lower edge of the heat collecting portion 22.

Since the heat accumulating part 22 protrudes toward the centrifugal fan 3, a central region of the heat generating tray 2 is formed with an installation space for installing the centrifugal fan 3. The lower edge of the first blade 31 is lower than the lower edge of the heat collecting portion 22, that is, a part of the first blade 31 is located in the installation space, and the other part is located outside the installation space.

Therefore, the part of the airflow blown to the outer periphery of the first fan blade 31 in the mounting area flows through the outer surface of the heat accumulating part 22, so that the heat of the heat accumulating part 22 is transferred to the airflow, thereby generating a high-temperature airflow, and the part of the airflow blown to the outer periphery of the first fan blade 31 outside the mounting area is in less or no contact with the heat accumulating part 22, so that the part of the airflow has a faster flow rate, and further drives the whole airflow to rapidly flow in the cooking cavity, thereby accelerating the formation of airflow circulation, namely improving the flowing speed of the airflow and improving the heating efficiency on the basis of ensuring that the airflow meets the air-frying requirement.

Furthermore, the first fan blade 31 has a first height in the vertical direction, a central line of the first height is flush with the lower edge of the heat gathering portion 22, so that a half portion of the first fan blade 31 in the height direction is located in the installation space, the airflow blown by the part of the fan blade flows through the outer surface of the heat gathering portion 22 and fully contacts with the heat gathering portion 22, the heat of the heat gathering portion 22 is taken away, a high-temperature airflow is generated, the flow rate is relatively slow, the other half portion of the first fan blade 31 in the height direction is located outside the installation space, the contact time of the airflow blown by the part of the fan blade with the heat gathering portion 22 is short, or the airflow is bypassed below the heat gathering portion 22, and therefore the airflow has a high flow rate. And the air flow of the two parts is approximately the same, so that the cooking utensil has higher temperature and faster air speed in the working process, and a good air-frying environment is ensured.

As a preferred embodiment of the present invention, as shown in fig. 3, the heating tube 23 has a cladding section 231 and an exposed section 232 connected to each other, the cladding section 231 is cladded and fixed inside the heat collecting portion 22, the exposed section 232 is exposed on the outer surface of the tray body 21, and the upper edge of the first fan blade 31 is higher than the lower edge of the exposed section 232.

When the cooking utensil operates in the air-frying mode, part of the air flow blown by the centrifugal fan 3 contacts the exposed section 232, and the temperature of the exposed section 232 is higher than that of the heat accumulating part 22, so that the heat transfer effect between the air flow and the exposed section 232 is better, the air flow can take away more heat from the exposed section 232, the heating effect on food is better, in addition, part of the air flow also flows through the heat accumulating part 22, and the heat generated by the heat accumulating part 22 transferred to the coating section 231 can be taken away, and the heating efficiency of the cooking utensil in the air-frying mode is improved.

Furthermore, since the wrapping section 231 is wrapped and fixed inside the heat accumulating portion 22, heat can be quickly transferred to the heat accumulating portion 22 and other positions of the tray body 21, so that the entire tray body 21 can be quickly heated. Therefore, the heating plate 2 can also be heated in contact with the inner container, which provides a possibility for the cooking appliance to realize multifunctional cooking, for example, by placing an inner container (such as an aluminum inner container) into the cooking cavity, and by heat transfer between the heating plate 2 and the inner container, cooking and heating of food in the inner container, such as a hot pot, can be realized.

As a preferred example of the present embodiment, as shown in fig. 3, multiple exposed sections 232 are arranged at intervals along the extending direction of the heat generating pipe 23, and the tray body 21 and the heat collecting portion 22 cooperate to form an air outlet channel 26 at the exposed sections 232.

After contacting the exposed section 232, the airflow flows out through the air outlet channel 26 and flows upwards to heat food, so that the flowing path of the airflow is reduced, and the heat loss is reduced.

As a preferred embodiment of the present invention, as shown in fig. 2 and 5, a first air guiding arc surface 25 is provided on a side of the heat collecting part 22 facing the center of the tray body 21.

The first flow guiding arc surface 25 reduces the resistance of the heat collecting part 22 to hot air flow, so that the air flow is in softer contact with the heat collecting part 22, and the air flow is prevented from violently colliding with the heat collecting part 22, and the air flow at the heating plate 2 is prevented from generating turbulence. And the air current flows along the first flow guide arc surface 25, so that the air speed is improved, the formation of thermal cycle is accelerated, and the heating efficiency is improved.

Preferably, as shown in fig. 1, the cooking appliance further includes a reflection cover 5 disposed in the pot body 1, the heating unit is disposed in the reflection cover 5, and a second air guiding arc surface 51 is disposed on an inner wall of the reflection cover 5.

The second flow guiding arc surface 51 accelerates the upward flow of hot air flow to heat food, reduces the heat loss of the air flow and ensures the heating efficiency.

Further, the cooking appliance further comprises a first inner container 6 arranged in the cooking cavity, and an oil blocking assembly 4 arranged below the first inner container 6, as shown in fig. 1 and 7, the oil blocking assembly 4 comprises an oil receiving basin 41 and an oil blocking member 42 arranged in the oil receiving basin 41, a first air return opening 412 is formed in the central area of the oil receiving basin 41, a first air inlet 411 is formed in the periphery of the oil receiving basin 4, the oil blocking member 42 is provided with an oil blocking portion 421, an overflow opening 422 is formed in the periphery of the oil blocking portion 421, the first inner container 6 is arranged above the oil blocking member 42, and the first inner container 6 is provided with a second air inlet 61 and a second air return opening 62.

The oil blocking portion 421 shields the oil dropped from the upper side of the first air return opening 412, and prevents the oil from dropping to the heating plate 2 through the first air return opening 412, so that the oil is vaporized or decomposed at high temperature to generate oil smoke, thereby affecting the taste of food and the user experience.

The centrifugal fan 3 blows airflow to the periphery, the airflow passes through the heat collecting part 22 and the exposed section 232, high-temperature airflow is formed after heat exchange occurs, the high-temperature airflow flows upwards after being guided by contact of the second air guide arc surface 51 of the reflecting cover 5, and the high-temperature airflow enters the first inner container 6 through the first air inlet 411 and the second air inlet 61 to heat food.

Furthermore, as shown in fig. 1 and fig. 3 to 4, a central region of the disk 21 is provided with a plurality of return ports 24, the plurality of return ports 24 are arranged at intervals around the circumferential direction of the disk 21, and each return port 24 is bent around the center line of the disk 21 in the same rotation direction.

The arrangement of the return port 24 facilitates the air flow to return to the area where the axis of the centrifugal fan 3 is located through the return port 24, and completes the circulation of a round of air flow. In addition, the backflow port 24 is arranged at intervals, so that the opening area of the central area of the tray body 21 is reduced, the structural strength of the tray body 21 is improved, the backflow port 24 can be prevented from being mistakenly inserted by fingers of a user, and the safety is improved. And in order to accelerate the reflux speed at the reflux port 24, cyclone reflux is designed, and the cyclone reflux is matched with the centrifugal air supply of the centrifugal fan 3, so that the flow rate of the gas is further promoted, and the heat efficiency is ensured.

In operation, after the hot air flow in the first inner container 6 is fully contacted with food, the hot air flow flows back downwards from the central area of the cooking cavity under the guidance of the upper pot cover, and flows to the area where the axis of the centrifugal fan 3 is located through the second air return port 62, the flow port 422, the first air return port 412 and the flow return port 24 in sequence, so that one complete air flow circulation is completed, and the air flow is blown to the periphery again under the blowing of the centrifugal fan 3, and a new circulation is performed.

As a preferred example of this embodiment, as shown in fig. 4, the backflow port 24 has a proximal end 242 close to the center of the disk 21 and a distal end 242 far from the center of the disk, and the area of the distal end 242 projected in the horizontal direction is larger than the area of the proximal end 241 projected in the horizontal direction.

Because the air current passes through with the whirlwind route backward flow mouth 24, consequently under the effect of centrifugal force, make the air current of disk body 21 center department is less, and the more of the air current gathering of periphery, correspondingly, distal end 242 area is great, makes things convenient for the passing through of air current, improves backward flow efficiency, prevents that the air current from being in the top of heating plate 2 gathers, produces great atmospheric pressure, influences the speed of refluxing.

Preferably, the area of the projection of the distal end 242 in the horizontal direction is smaller than the area of a circle having a diameter of 12mm, and in general, the cross section of a human finger is approximately a circle having a radius of 12mm, so that the finger cannot enter the return opening 24 even under limited conditions, thereby improving safety.

As a preferred example of the present embodiment, as shown in fig. 5, the tray body 21 has a reflow region 211 and a heat transfer region 212 fixedly connected to the reflow region 211, the reflow opening 24 is opened in the reflow region 211, and the thickness of the reflow region 211 is smaller than that of the heat transfer region 212.

The heat of heating plate 2 is through the cladding in the inside heating tube 23 of heat accumulation portion 22 produces, heat transfer area distance heat accumulation portion 22 is nearer, consequently the thickness of heat transfer area 212 is thicker, is favorable to thermal gathering for when the air-fried, more heats are taken away to the outside outflow of air current when flowing away to the hot gas flow is to the heating effect of food, and the thickness of backward flow region 211 is thinner, has reduced manufacturing cost, and is convenient the machine-shaping of backward flow mouth 24 reduces the processing degree of difficulty.

Preferably, the thickness of the reflow region 211 is 1mm to 2mm, so as to facilitate the processing of the reflow opening 24 on the premise of satisfying the strength test.

Preferably, as shown in fig. 3, a protrusion 27 is disposed in a central region of the tray body 21, on one hand, the protrusion 27 is capable of pouring molten metal, for example, the molten metal fills the outside of the heat generating tray 2 under the action of centrifugal force and then gradually accumulates inside the heat generating tray 2, so as to complete the forming of the whole heat generating tray 2, thereby reducing the manufacturing difficulty, and the formed heat generating tray 2 has fewer air holes and high strength, on the other hand, the presence of the protrusion 27 improves the strength of the tray body 21 near the return opening 24, thereby preventing the tray body 21 from deforming at high temperature.

As a preferred embodiment of the present invention, as shown in fig. 6, the centrifugal fan 3 further includes a second blade 32 horizontally disposed, and the second blade 32 is fixedly connected to a lower edge of the first blade 31.

The second fan blade 32 is arranged to enable as much air flow as possible to flow through the heat collecting portion 22 in the air supply process, so that the air flow is prevented from flowing downwards, the air flow bypasses the heat collecting portion 22, the temperature of the air flow is low, the heating effect is poor, and on the other hand, when the air flow flows back to the air flow, the second fan blade 32 can push the air flow to the heat collecting portion 22 again, the next circulation is started, and the heat circulation efficiency is improved.

As a preferred embodiment of the present invention, the cooking appliance further includes a control unit, and a first inner container 6 and a second inner container 7 selectively placed in the cooking cavity, wherein the control unit controls the centrifugal fan 3 to operate when the first inner container 6 is placed in the cooking cavity, and controls the centrifugal fan 3 to stop when the second inner container 7 is placed in the cooking cavity.

The cooking appliance realizes the switching of multiple cooking modes by controlling the starting and stopping of the centrifugal fan 3.

For example, in one embodiment, when the user puts the first inner container 6 into the cooking cavity, the control unit controls the centrifugal fan 3 to operate, so as to push the air flow to form a hot air flow circulation in the cooking cavity, so as to heat the food.

It should be noted that, in this embodiment, the structure of the first inner container 6 is not specifically limited, for example, the first inner container 6 may be a baking tray, and a user may put food into the baking tray for frying, and as shown in fig. 1-2, the first inner container 6 may be a frying basket, and a user may put food into the frying basket for frying food.

In another embodiment, as shown in fig. 8, the second inner container 7 is an aluminum inner container, when a user puts the aluminum inner container into the cooking cavity, the heating plate 2 contacts with a bottom wall of the aluminum inner container, the cooking device operates in a cooking mode, the centrifugal fan 3 stops operating, and the heating plate 2 transfers heat to the aluminum inner container through contact, so as to cook food (such as chafing dish) in the aluminum inner container.

The method can be realized by adopting or referring to the prior art in places which are not described in the utility model.

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 the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cooking appliance comprises a pot body with a cooking cavity and a heating unit arranged below the cooking cavity, wherein the heating unit comprises a heating plate and a centrifugal fan arranged below the heating plate,

the heating plate comprises a plate body and a heating pipe, the periphery of the plate body is provided with an orientation, the heat collecting portion is convex on one side of the centrifugal fan, at least part of the area of the heating pipe is coated and fixed in the heat collecting portion, the centrifugal fan comprises a first fan blade with an included angle with the horizontal plane, and the upper edge of the first fan blade is higher than the lower edge of the heat collecting portion.

2. The cooking appliance of claim 1,

3. The cooking appliance of claim 2,

4. The cooking appliance of claim 1,

5. The cooking appliance of claim 4,

6. The cooking appliance of claim 1,

7. The cooking appliance of claim 6,

8. The cooking appliance of claim 7,

9. The cooking appliance of claim 1,

10. The cooking appliance according to any one of claims 1 to 9,