CN219920875U - Cooking electric appliance - Google Patents

Cooking electric appliance Download PDF

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Publication number
CN219920875U
CN219920875U CN202320678815.XU CN202320678815U CN219920875U CN 219920875 U CN219920875 U CN 219920875U CN 202320678815 U CN202320678815 U CN 202320678815U CN 219920875 U CN219920875 U CN 219920875U
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CN
China
Prior art keywords
air duct
air
cooking appliance
cooking
air outlet
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Active
Application number
CN202320678815.XU
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Chinese (zh)
Inventor
丁佳俐
杜泽选
杨杰
费玉敏
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Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Priority to CN202320678815.XU priority Critical patent/CN219920875U/en
Application granted granted Critical
Publication of CN219920875U publication Critical patent/CN219920875U/en
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Abstract

The embodiment of the utility model provides a cooking appliance, which comprises a box body, an air duct system and a fan assembly. The box body is provided with a cooking cavity; the air duct system comprises a heat dissipation air duct and a hot air duct, at least part of the heat dissipation air duct is arranged at the top of the box body, the hot air duct is arranged between the cooking cavity and the heat dissipation air duct positioned at the top of the box body, the hot air duct is provided with a first air outlet, and the heat dissipation air duct is provided with a second air outlet; the fan assembly comprises a first fan blade arranged in the hot air duct and a second fan blade arranged in the heat dissipation duct, under the action of the first fan blade, air flow in the hot air duct flows to the cooking cavity through the first air outlet, and under the action of the second fan blade, air flow in the heat dissipation duct flows to the outside through the second air outlet. According to the cooking appliance provided by the embodiment of the utility model, the hot air duct and at least the dispersed hot air duct are arranged at the top of the box body, so that the cooking appliance is more compact in structure, the volume of the cooking appliance is reduced, and the cooking efficiency and the cooking effect are improved.

Description

Cooking electric appliance
Technical Field
The utility model relates to the technical field of kitchen equipment, in particular to a cooking electric appliance.
Background
As a main kitchen appliance for daily cooking, a cooking appliance such as an electric oven has become an indispensable member in modern home kitchens. In the related art, the hot air duct of the oven is generally arranged at the back of the oven, the heat dissipation duct is arranged at the top of the oven, the occupied space is large, the cost is high, the volume of the oven is increased, and the use experience of a user is reduced.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a cooking appliance with a compact structure.
To achieve the above object, an embodiment of the present utility model provides a cooking appliance, including:
the box body is provided with a cooking cavity;
the air duct system comprises a heat dissipation air duct and a hot air duct, at least part of the heat dissipation air duct is arranged at the top of the box body, the hot air duct is arranged between the cooking cavity and the heat dissipation air duct positioned at the top of the box body, the hot air duct is provided with a first air outlet, and the heat dissipation air duct is provided with a second air outlet;
the fan assembly comprises a first fan blade arranged in the hot air duct and a second fan blade arranged in the heat dissipation duct, air in the hot air duct flows through the first air outlet to the cooking cavity under the action of the first fan blade, and air in the heat dissipation duct flows through the second air outlet to the outside under the action of the second fan blade.
In one embodiment, the cooking appliance includes a heating assembly having at least one heating pipe, at least a heating portion of the heating pipe is located in the cooking cavity, and under the action of the first fan blade, air in the hot air duct flows through the first air outlet to the heating portion.
In one embodiment, the cooking appliance comprises a cavity upper plate positioned at the top of the box body and a cover plate covered on the cavity upper plate, wherein the cover plate and the cavity upper plate enclose to form the hot air duct, the cavity upper plate is provided with the first air outlet, and at least the heating part of the heating pipe is positioned below the cavity upper plate.
In one embodiment, a partial area of the cavity upper plate is recessed downwards to form a first avoidance area, an area of the cover plate corresponding to the first avoidance area is recessed upwards to form a second avoidance area, and the first avoidance area and the second avoidance area enclose to form the hot air duct.
In one embodiment, at least part of the first air outlet is formed on the side wall of the first avoidance area.
In one embodiment, the cavity upper plate includes a guiding surface located at a side of the first air outlet away from the first fan blade, and at least part of the air flow flowing out of the first air outlet can be guided to the heating portion through the guiding surface.
In one embodiment, the bottom wall of the first avoidance area is provided with an air passing port communicated with the cooking cavity, and the first fan blade is arranged above the air passing port.
In one embodiment, the box body comprises an inner container and a door body, wherein the inner container is provided with the cooking cavity with a first opening at the front side, and the door body is arranged at the first opening in an openable and closable manner; the heat dissipation air duct comprises a first sub-air duct arranged at the top of the box body and a second sub-air duct arranged in the door body, and the second sub-air duct extends along the height direction of the door body.
In one embodiment, the cooking appliance comprises a mounting plate and a wind scooper, wherein the mounting plate is arranged above the cover plate, the wind scooper is arranged on the mounting plate in a covering mode, and the mounting plate and the wind scooper enclose to form the first sub-air duct and the second air outlet communicated with the first sub-air duct.
In one embodiment, a second air inlet is formed in the top of the air guide cover, the direction of the second air outlet is perpendicular to the direction of the second air inlet and faces the door body, and a third air outlet communicated with the second sub-air duct is formed in the position, close to the second air outlet, of the door body.
In one embodiment, the fan assembly comprises a motor located at the second air inlet, the motor comprises a main body and a rotating shaft connected with the main body, and the motor is in driving connection with the first fan blade and the second fan blade through the rotating shaft.
In one embodiment, the fan assembly comprises a mounting bracket arranged at the second air inlet, the mounting bracket is connected with the air guide cover, and the motor is arranged on the mounting bracket.
In one embodiment, the top of the cooking cavity has a second opening, and the cavity upper plate is disposed at the second opening.
In one embodiment, the cooking appliance is one of an oven, an air fryer, a steam box, and a steam oven.
The cooking appliance comprises a box body, an air duct system and a fan assembly, wherein the box body is provided with a cooking cavity, at least part of the heat dissipation air duct is arranged at the top of the box body, the hot air duct is arranged between the cooking cavity and the heat dissipation air duct arranged at the top of the box body, namely, the hot air duct and at least the scattered hot air duct are arranged at the top of the box body to form an integrated air duct system, the hot air duct is provided with a first air outlet, the heat dissipation air duct is provided with a second air outlet, air in the hot air duct flows to the cooking cavity through the first air outlet, and air in the heat dissipation air duct flows to the outside through the second air outlet, namely, by arranging the hot air duct and the at least the scattered hot air duct at the top of the box body, the cooking appliance is more compact in structure, the volume of the cooking appliance is reduced (namely, the size of the cooking appliance along the front-back direction is reduced), and the experience of a user is improved, meanwhile, the cost is reduced, and the assembly efficiency is improved. Moreover, the air flow in the heat dissipation air duct flows to the outside through the second air outlet, so that heat transferred to the top of the box body in the cooking cavity can be dissipated, and heat dissipation and cooling of the box body, the main board and other parts located at the top of the box body are realized.
In addition, through setting up the hot-blast wind channel at the top of box, the air current in the hot-blast wind channel flows to the culinary art chamber through first air outlet, can make the air current that carries heat blow to food perpendicularly, compares hot-blast wind channel setting at the back of box, and the hot-blast wind channel setting of this embodiment of the utility model has improved culinary art efficiency and culinary art effect at the top of box.
Drawings
Fig. 1 is a schematic structural view of a cooking appliance with a door omitted according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 2;
fig. 4 is a schematic structural view of a cooking appliance according to another embodiment of the present utility model, wherein a dotted arrow indicates a flow direction of an air flow;
FIG. 5 is an exploded view of a portion of the air duct system and fan assembly connection of the present utility model;
FIG. 6 is a schematic view of a top plate of a chamber according to an embodiment of the utility model;
FIG. 7 is a schematic view showing a connection structure between a chamber upper plate and a heating assembly according to an embodiment of the present utility model;
FIG. 8 is a cross-sectional view of FIG. 7;
FIG. 9 is an enlarged view at C in FIG. 8, wherein the dashed arrows indicate the direction of airflow;
fig. 10 is a schematic diagram of a connection structure between a mounting plate and a wind scooper according to an embodiment of the present utility model.
Description of the reference numerals
A case 10; a cooking chamber 10a; an inner container 11; a first opening 11a; a second opening 11b; a door body 12; a third air outlet 12a; a third air inlet 12b; a cavity front plate 13; an air duct system 20; a heat radiation air duct 21; a second air outlet 21a; a first sub-duct 21b; a second sub-duct 21c; a hot air duct 22; a fan assembly 30; a first fan blade 31; a second fan blade 32; a motor 33; a main body 331; a rotating shaft 332; a mounting bracket 34; a heating assembly 40; a heating pipe 41; a heating section 411; a connection end 412; a cavity upper plate 50; a first air outlet 50a; a first avoidance region 50b; a guide surface 50c; an air outlet 50d; a guide groove 50e; a cover plate 60; a second avoidance zone 60a; a mounting plate 70; a third avoidance zone 70a; a wind scooper 80; a fourth avoidance zone 80a; a second air inlet 80b; cooking appliance 100.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments of the present utility model and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present utility model and should not be construed as unduly limiting the present utility model.
In the description of the present utility model, the terms "top," bottom, "" upper, "" lower, "" front, "" rear, "and" positional relationships are based on the orientations or positional relationships shown in fig. 1 and 4, where the "height direction" is based on the top-bottom direction shown in fig. 1 and the "back" is based on the rear side shown in fig. 4, it should be understood that these positional terms are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. The utility model will be described in further detail with reference to the accompanying drawings and specific examples. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 5, the embodiment of the utility model provides a cooking appliance, which comprises a box 10, an air duct system 20 and a fan assembly 30, wherein the air duct system 20 comprises a heat dissipation air duct 21 and a hot air duct 22, at least part of the heat dissipation air duct 21 is arranged at the top of the box 10, and the hot air duct 22 is arranged between a cooking cavity 10a and the heat dissipation air duct 21 positioned at the top of the box 10.
It should be noted that the specific type of the cooking appliance 100 is not limited herein, and in an exemplary embodiment, the cooking appliance 100 is one of an oven, an air fryer, a steam box, and a steam oven. The embodiment of the present utility model will be described by taking the cooking appliance 100 as an oven.
In other embodiments, the microwave heating function can be integrated on the cooking appliances 100 with different functions according to the user's needs, so as to separate the microwave from the oven, the steam box or the steam oven, and improve the kitchen use convenience. For example, a microwave oven all-in-one machine.
It should be noted that "at least part of the heat dissipation air duct 21 is disposed at the top of the case 10" means that part of the heat dissipation air duct 21 may be disposed at the top of the case 10, or all of the heat dissipation air duct 21 may be disposed at the top of the case 10.
Referring to fig. 2 and 3, the hot air duct 22 is disposed between the cooking cavity 10a and the heat dissipation duct 21 at the top of the case 10, i.e. the hot air duct 22 is disposed above the cooking cavity 10a, and at least part of the heat dissipation duct 21 is disposed above the hot air duct 22, i.e. the hot air duct 22 and at least part of the heat dissipation duct 21 are integrally disposed at the top of the case 10 to form the integrated air duct system 20. The air duct system 20 has simple structure, low cost and small volume.
Referring to fig. 2 and 3, the hot air duct 22 has a first air outlet 50a, the fan assembly 30 includes a first fan blade 31 disposed in the hot air duct 22, and under the action of the first fan blade 31, the air flow in the hot air duct 22 flows to the cooking cavity 10a through the first air outlet 50a, so that the temperature field inside the cooking cavity 10a is more uniform, and the cooking effect is improved.
Referring to fig. 2 to 5, the heat dissipation air duct 21 has a second air outlet 21a, the fan assembly 30 includes a second fan blade 32 disposed in the heat dissipation air duct 21, and under the action of the second fan blade 32, the air flow in the heat dissipation air duct 21 flows to the outside through the second air outlet 21a, so that the air flow rate can be increased under the action of the second fan blade 32, the scattered air flow is more concentrated and smooth, the heat at the top of the oven is smoothly introduced into the heat dissipation air duct 21, and flows to the outside through the second air outlet 21a, the temperature at the top of the oven is effectively reduced, and the service life and user experience of the cooking appliance 100 are improved.
The cooking appliance according to the embodiment of the utility model includes a case 10, an air duct system 20 and a fan assembly 30, the case 10 has a cooking cavity 10a, by providing the air duct system 20 including a heat dissipation air duct 21 and a hot air duct 22, at least part of the heat dissipation air duct 21 is disposed at the top of the case 10, the hot air duct 22 is disposed between the cooking cavity 10a and the heat dissipation air duct 21 disposed at the top of the case 10, that is, the hot air duct 22 and at least part of the heat dissipation air duct 21 are disposed at the top of the case 10 to form an integrated air duct system 20, the hot air duct 22 has a first air outlet 50a, the heat dissipation air duct 21 has a second air outlet 21a, the air flow in the hot air duct 22 flows to the cooking cavity 10a through the first air outlet 50a, and the air flow in the heat dissipation air duct 21 flows to the outside through the second air outlet 21a, that is, by disposing the air duct 22 and at least part of the heat dissipation air duct 21 at the top of the case 10, the structure of the cooking appliance 100 is more compact, the volume of the cooking appliance 100 is reduced (that is, the size of the cooking appliance 100 in the front-rear direction is reduced), thereby improving the user experience, and at the same time, compared with the case having reduced heat-generating components disposed at the back of the case 10. Moreover, the air flow in the heat dissipation air duct 21 flows to the outside through the second air outlet 21a, so that the heat transferred to the top of the box 10 in the cooking cavity 10a can be dissipated, and heat dissipation and cooling of the box 10 and parts such as a main board positioned at the top of the box 10 can be realized.
In addition, by arranging the hot air duct 22 at the top of the case 10, the air flow in the hot air duct 22 flows to the cooking cavity 10a through the first air outlet 50a, so that the air flow carrying heat can be vertically blown to food, and compared with the case 10 with the hot air duct 22 arranged at the back of the case 10, the embodiment of the utility model has the advantage that the hot air duct 22 is arranged at the top of the case 10, thereby improving the cooking efficiency and the cooking effect.
Referring to fig. 2 and 3, the cooking appliance 100 includes a heating assembly 40 having at least one heating tube 41, and at least a heating portion 411 of the heating tube 41 is positioned in the cooking cavity 10a, i.e., generates heat by heating the heating tube 41 for heating food in the cooking cavity 10 a.
The heating assembly 40 has at least one heating tube 41, and in some embodiments, the heating assembly 40 includes 1 heating tube 41. In other embodiments, the heating assembly 40 includes a plurality of heating tubes 41. The number of heating pipes 41 is 2 in the embodiment of the present utility model.
Wherein, the plurality refers to a number of 2 or more than 2.
At least the heating part 411 of the heating tube 41 is located in the cooking cavity 10a, which means that the heating part 411 of the heating tube 41 is directly arranged in the cooking cavity 10a, heat generated by heating of the heating part 411 can be directly transferred to the cooking cavity 10a, heat loss is reduced, heat utilization rate is improved, and meanwhile, heat transferred to parts on the periphery of the cooking cavity 10a can be reduced to a certain extent, for example, heat transferred to the top of an oven can be reduced.
In the related art, the hot air duct is arranged at the back of the box body, the first fan blade and the heating pipe are arranged in the hot air duct, the air flow of the hot air duct is not directly blown to the heating pipe, and the air flow carrying heat of the hot air duct is parallel to the food, so that the cooking efficiency and the cooking effect are poor.
The hot air duct 22 of the embodiment of the utility model is disposed at the top of the case 10 and between the heat dissipation duct 21 and the cooking cavity 10a, and under the action of the first fan blade 31, the air flow in the hot air duct 22 flows to the heating portion 411 through the first air outlet 50a, on one hand, the air flow in the hot air duct 22 flows to the heating portion 411 through the first air outlet 50a, so that the heat of the heating portion 411 can be better carried to blow to the food, the heat utilization rate is improved, and on the other hand, the air flow carrying the heat can be vertically blown to the food, and the cooking efficiency and the cooking effect are improved.
In an embodiment, the cooking appliance 100 includes an electric control box, which is used for being electrically connected with the connection end 412 of the heating tube 41, and the electric control box includes a main board, etc., so as to control the operation and disconnection of the heating tube 41.
The specific location of the electronic control box is not limited herein, and the electronic control box is illustratively disposed at the top of the toaster.
The main board of the electric control box is provided with components such as a CPU chip and a relay with high power consumption, and when in work, the components can generate large heat, so that the components such as the chip and the like have certain requirements on temperature rise in order to avoid performance reduction caused by overheating, and therefore the components need to be radiated.
Referring to fig. 2, 3, 7 and 8, the heating portion 411 of the heating tube 41 is located in the cooking cavity 10a, and the connecting end 412 of the heating tube 41 may be disposed outside the cooking cavity 10a so as to be electrically connected to the electric control box. In addition, the heating part 411 of the heating pipe 41 is located in the cooking cavity 10a, so that the heat transferred to the top of the oven is reduced, the temperature of the electric control box can be further reduced, and the service life of the oven and the user experience are improved.
Under the action of the first fan blade 31, the air flow in the hot air duct 22 flows to the heating pipe 41 through the first air outlet 50a. That is, by providing the hot air duct 22 such that the air flow in the hot air duct 22 is blown toward the heating pipe 41, the heat circulation efficiency in the cooking cavity 10a is improved, the temperature field in the cooking cavity 10a is made more uniform, and the cooking effect is improved.
As an example, referring to fig. 2 to 5, the cooking appliance 100 includes a cavity upper plate 50 located at the top of the case 10 and a cover plate 60 covering the cavity upper plate 50, the cover plate 60 and the cavity upper plate 50 enclose a hot air duct 22, at least a heating portion 411 of the heating tube 41 is located below the cavity upper plate 50, and at least the heating portion 411 of the heating tube 41 is located below the cavity upper plate 50, i.e. the hot air duct 22 is located above the cooking cavity 10a, because at least the heating portion 411 of the heating tube 41 is located in the cooking cavity 10 a.
Of course, in other embodiments, the heating portion 411 of the heating tube 41 may also be located above the cavity upper plate 50.
It should be noted that the specific forming manner of the first air outlet 50a is not limited herein, and in some embodiments, the cavity upper plate 50 has the first air outlet 50a, that is, the first air outlet 50a is disposed on the cavity upper plate 50. In other embodiments, the cover plate 60 and the upper cavity plate 50 together define the first air outlet 50a. In still other embodiments, the cover plate 60 may be provided with the first air outlet 50a.
In an embodiment, referring to fig. 2, 3 and 6, a partial area of the cavity upper plate 50 is recessed downward and forms a first avoidance area 50b, an area of the cover plate 60 corresponding to the first avoidance area 50b is recessed upward and forms a second avoidance area 60a, and the first avoidance area 50b and the second avoidance area 60a enclose a hot air duct 22. That is, the first fan blade 31 is disposed between the first avoidance region 50b and the second avoidance region 60 a. So, on the one hand, cavity upper plate 50 forms first district 50b of dodging, and apron 60 forms second district 60a of dodging, can dodging first fan blade 31, provides the mounted position for first fan blade 31 promptly, in addition, can also increase the space in hot-blast wind channel 22, improves the amount of wind, further makes the temperature field in the culinary art chamber 10a more even, improves the culinary art effect. On the other hand, the cavity upper plate 50 and the cover plate 60 only need to be partially recessed to form an avoidance area, and other areas can be made as small as possible, so that the structure can be more compact.
In other embodiments, a partial area of the upper plate 50 of the cavity may be recessed downward to form a first avoidance area 50b, the cover plate 60 does not form a second avoidance area 60a, and the first fan blade 31 is disposed in the first avoidance area 50 b.
In still other embodiments, the cavity upper plate 50 may not form the first avoidance area 50b, a partial area of the cover plate 60 is recessed upward and forms the second avoidance area 60a, and the first fan blade 31 is disposed in the second avoidance area 60 a.
Illustratively, the first fan blade 31 is a centrifugal fan blade, and the centrifugal fan blade is used for providing a wind source for the hot air duct 22, so that compared with the existing through-flow fan blade, the noise is smaller, the fan blade is not easy to fail, the service life is long, the user experience is improved, in addition, the air inlet quantity is large, the temperature field in the cooking cavity 10a is more uniform, and the cooking effect is improved.
For example, referring to fig. 2 to 9, at least a portion of the first air outlet 50a is formed on a sidewall of the first avoidance region 50 b. The opening direction of the first air outlet 50a can play a role in guiding the airflow direction of the hot air duct 22, and when the first fan blade 31 rotates, the airflow of the hot air duct 22 is blown out through the first air outlet 50a on the side wall of the first avoidance area 50 b. By forming at least part of the first air outlet 50a on the side wall of the first avoidance area 50b, the air flow of the hot air duct 22 flows to the cooking cavity 10a at a certain angle, and is blown to the heating part 411 of the heating pipe 41.
Note that, at least a part of the first air outlets 50a are formed on the side wall of the first avoidance area 50b means that a part of the first air outlets 50a may be formed on the side wall of the first avoidance area 50b, or all of the first air outlets 50a may be formed on the side wall of the first avoidance area 50 b. When a part of the first air outlet 50a is formed on the sidewall of the first avoidance area 50b, another part of the first air outlet 50a may be formed on the bottom wall of the first avoidance area 50b, or another part of the first air outlet 50a may be formed in the non-recessed area of the cavity upper plate 50.
In the related art, the hot air duct is arranged at the back of the box body, the first fan blades and the heating pipes are arranged in the hot air duct, and the hot air cover and the cavity upper plate are required to be arranged to guide the air flow of the hot air duct, so that the quantity of parts is large, and the production assembly efficiency is influenced.
In the embodiment of the present utility model, referring to fig. 7 to 9, the cavity upper plate 50 includes a guiding surface 50c located at a side of the first air outlet 50a away from the first fan blade 31, that is, the guiding surface 50c is disposed at an outer side of the cavity upper plate 50 located at the first air outlet 50a, at least a portion of the air flow flowing out of the first air outlet 50a can be guided to the heating portion 411 through the guiding surface 50c, so that the air flow blown to the guiding surface 50c is guided to the heating portion 411 of the heating tube 41 under the action of the guiding surface 50c through the arrangement of the guiding surface 50c. That is, compared with the prior art that the air flow of the hot air duct 22 is guided by arranging the hot air cover, the utility model directly guides the air flow by arranging the guide surface 50c on the cavity upper plate 50, thereby reducing the number of parts, lowering the cost and improving the assembly efficiency.
In an embodiment, referring to fig. 7 to 9, the cavity upper plate 50 is located at a side of the first air outlet 50a away from the first fan blade 31 and is recessed downward to form a guiding groove 50e, and a side surface of the guiding groove 50e, which is close to the side of the first air outlet 50a, is a guiding surface 50c, i.e. after the air flow of the hot air duct 22 flows out through the first air outlet 50a, part of the air flow will flow to the guiding surface 50c of the guiding groove 50e, and under the guiding action of the guiding surface 50c, the air flow flows to the heating portion 411. The structure is simple and easy to form.
In other embodiments, the edge of the upper plate 50 of the cavity may be turned down to form a flange, and the side of the flange near the first air outlet 50a is a guiding surface 50c.
In one embodiment, referring to FIG. 9, the angle A between the guide surface 50c and the horizontal is 90-160. For example, 90 °, 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 135 °, 140 °, 145 °, 150 °, 155 °, 160 °, etc.
When the angle between the guide surface 50c and the horizontal surface is smaller than 90 °, the flow rate of the air flow may be reduced, which is disadvantageous to the flow of the air flow to the cooking chamber 10a, and thus to the uniformity of the temperature field in the cooking chamber 10 a.
When the angle between the guide surface 50c and the horizontal plane is greater than 160 °, the guide effect of the guide surface 50c may be poor, and a portion of the air flow may flow away from the gap between the guide surface 50c and the heating portion 411, that is, the portion of the air flow may not blow toward the heating portion 411, thereby disadvantageously making the temperature field in the cooking cavity 10a uniform.
The included angle between the guiding surface 50c and the horizontal plane is 90 ° -160 °, so that the air flow entering the cooking cavity 10a flows to the heating portion 411 as much as possible while the air volume of the hot air duct 22 blowing to the cooking cavity 10a is not affected, which is beneficial to making the temperature field in the cooking cavity 10a more uniform.
Referring to fig. 8, L1 is the width of the first air outlet 50a, and the dimension of L1 is related to the air volume of the hot air duct 22 entering the cooking cavity 10a, wherein the larger L1 is, the larger the air volume of the hot air duct 22 entering the cooking cavity 10a is, and the smaller L1 is, the smaller the air volume of the hot air duct 22 entering the cooking cavity 10a is.
Referring to fig. 9, H1 is the depth of the first avoidance area 50b of the upper plate 50 of the cavity, and the avoidance space is used for installing the hot air fan blades. H2 is the depth of the guiding groove 50e of the upper cavity plate 50, the angle a between the guiding surface 50c of the guiding groove 50e and the horizontal plane is 140 °, L2 is the distance between two adjacent heating tubes, D is the radiation range of the air flow in the hot air duct 22 flowing out through the first air outlet 50a of the upper cavity plate 50, and the heating portion 411 needs to be within this range. But the values of H1, H2, A, L2 and D can be set to allow the air flow in the hot air duct 22 to flow to the heating part 411 through the first air outlet 50a as much as possible.
In an embodiment, referring to fig. 2 to 6, the bottom wall of the first avoidance area 50b is provided with an air passage 50d communicating with the cooking cavity 10a, and the first fan blade 31 is disposed above the air passage 50d, that is, the hot air duct 22 communicates with the cooking cavity 10a through the air passage 50d, and the air passage 50d is further beneficial to the airflow between the hot air duct 22 and the cooking cavity 10 a.
The relative position of the first fan blade 31 and the air passage 50d is not limited on a plane perpendicular to the height direction of the cooking appliance 100, and illustratively, the central axis of the first fan blade 31 coincides with the central axis of the air passage 50d, thus further facilitating the flow of the air flow between the hot air passage 22 and the cooking cavity 10 a.
Referring to fig. 1 and 2, an exemplary case 10 includes a liner 11 and a door body 12, wherein the liner 11 is provided with a cooking cavity 10a having a first opening 11a at a front side, and the door body 12 is openably and closably provided at the first opening 11a, i.e., the door body 12 is provided for opening or closing the cooking cavity 10a, so that a user can cook conveniently.
Referring to fig. 2, the heat dissipation air duct 21 includes a first sub-air duct 21b disposed at the top of the case 10 and a second sub-air duct 21c disposed in the door 12, and the second sub-air duct 21c extends along the height direction of the door 12. That is, the oven can radiate heat from the top of the oven and other parts such as the electric control box at the top of the oven through the first sub-air duct 21b, and simultaneously, the heat in the door body 12 can be exhausted through the second sub-air duct 21c, so that the door body 12 can be radiated, and the effects of multiple heat radiation and temperature reduction are achieved.
For example, referring to fig. 2 to 6, the cooking appliance 100 includes a mounting plate 70 disposed above the cover plate 60 and a wind guiding cover 80 disposed on the mounting plate 70, wherein the mounting plate 70 and the wind guiding cover 80 enclose a first sub-air duct 21b and a second air outlet 21a communicating with the first sub-air duct 21b. By arranging the mounting plate 70 above the cover plate 60, the air guide cover 80 is covered on the mounting plate 70, and the mounting plate 70 and the air guide cover 80 enclose to form the first sub-air duct 21b, that is, the first sub-air duct 21b is arranged above the hot air duct 22.
It should be noted that the specific forming manner of the second air outlet 21a is not limited herein, and in some embodiments, the mounting plate 70 and the air guiding cover 80 may define the second air outlet 21a together. In other embodiments, the mounting plate 70 may further have a second air outlet 21a, that is, the second air outlet 21a is disposed on the mounting plate 70. In still other embodiments, the second air outlet 21a may be disposed on the air guiding cover 80.
Of course, referring to fig. 2, the cooking appliance 100 may further include a cavity front plate 13, a fourth air outlet corresponding to the second air outlet 21a is disposed on the cavity front plate 13, and the mounting plate 70 and the air guiding cover 80 may be connected to the cavity front plate 13. The air flow in the first sub-air duct 21b flows out through the second air outlet 21a and flows out to the outside through the fourth air outlet.
In an embodiment, referring to fig. 2 to 6, a partial area of the mounting plate 70 is recessed downward to form a third avoidance area 70a, an area of the air guiding cover 80 corresponding to the third avoidance area 70a is recessed upward to form a fourth avoidance area 80a, and the third avoidance area 70a and the fourth avoidance area 80a enclose to form a first sub-air duct 21b. That is, the second fan blade 32 is disposed between the third avoidance region 70a and the fourth avoidance region 80 a. Thus, on the one hand, the mounting plate 70 forms the third avoidance area 70a, and the air guide cover 80 forms the fourth avoidance area 80a, so that the second fan blade 32 can be avoided, that is, the mounting position is provided for the second fan blade 32, in addition, the space of the first sub-air duct 21b can be increased, the air quantity is improved, and the heat dissipation effect on the top of the oven and other parts such as an electric control box positioned at the top of the oven is further improved. On the other hand, as long as the mounting plate 70 and the air guide cover 80 are partially recessed to form the avoidance area, other areas can be made as small as possible, and the structure can be further compact.
In other embodiments, a portion of the mounting plate 70 may be recessed downward and form the third avoidance area 70a, the fourth avoidance area 80a is not formed by the air guiding cover 80, and the second fan blade 32 is disposed in the third avoidance area 70 a.
In still other embodiments, the mounting plate 70 may not form the third avoidance area 70a, a partial area of the wind scooper 80 is recessed upward and forms the fourth avoidance area 80a, and the second fan blade 32 is disposed in the fourth avoidance area 80 a.
For example, referring to fig. 2 to 6, the second fan blade 32 is a centrifugal fan blade, and the centrifugal fan blade is used to provide a wind source for the heat dissipation air duct 21, so that compared with the existing through-flow fan blade, the noise is smaller, the through-flow fan blade is not easy to fail, the service life is long, the user experience is improved, in addition, the air inlet quantity is also large, and the heat dissipation effect is improved.
In an embodiment, referring to fig. 4, 5 and 10, the top of the air guiding cover 80 is provided with the second air inlet 80b, so, when the fan assembly 30 works, external air flow can enter the first sub-air duct 21b through the second air inlet 80b at the top of the air guiding cover 80, so that negative pressure is generated in the top area of the cooking appliance 100, and the external air flow of the cooking appliance 100 is driven to flow into the cooking appliance 100, and is sucked into the first sub-air duct 21b, and the air flow is discharged through the second air outlet 21a under the action of the second fan blade 32, so that heat dissipation of the top of the box 10 and other parts such as an electric control box at the top of the box 10 is realized.
For example, referring to fig. 2, the direction of the second air outlet 21a is perpendicular to the direction of the second air inlet 80 b. Of course, the direction of the second air outlet 21a and the direction of the second air inlet 80b may be disposed at a certain angle.
The second air outlet 21a faces the door body 12, and a third air outlet 12a communicated with the second sub-air duct 21c is arranged at a position, close to the second air outlet 21a, of the door body 12. At this time, because the air flow in the first sub-air duct 21b flows to the outside through the second air outlet 21a, negative pressure is formed at the second air outlet 21a, and the door body 12 is provided with a third air outlet 12a close to the second air outlet 21a and communicated with the second sub-air duct 21c, so that negative pressure is also formed at the third air outlet 12a, the air flow in the second sub-air duct 21c inside the door body 12 flows into the outside from the third air outlet 12a under the action of the negative pressure, and the heat in the door body 12 can be dissipated through the second sub-air duct 21c, so that the multiple heat dissipation and cooling effects are achieved.
The bottom of the door body 12 is provided with a third air inlet 12b communicated with the second sub-air duct 21 c. When negative pressure is formed at the third air outlet 12a, external air flow can flow into the second sub-air duct 21c inside the door body 12 from the third air inlet 12b, and under the action of negative pressure, air flow of the second sub-air duct 21c inside the door body 12 flows into the outside from the third air outlet 12a.
In the related art, the hot air duct of the oven is generally arranged at the back of the oven, the heat dissipation duct is arranged at the top of the oven, two motors are needed, the cost is high, the occupied space is large, the volume of the oven is increased, and the transportation and installation space is increased.
Referring to fig. 2 to 5, in the cooking appliance 100 of the embodiment of the present utility model, the fan assembly 30 includes a motor 33 located at the second air inlet 80b, the motor 33 includes a main body 331 and a rotating shaft 332 connected to the main body 331, the rotating shaft 332 sequentially penetrates through the heat dissipation air duct 21 and the hot air duct 22, the first fan blade 31 and the second fan blade 32 are disposed on the rotating shaft 332, and the motor 33 is in driving connection with the first fan blade 31 and the second fan blade 32. That is, the motor 33 is in driving connection with the first fan blade 31 and the second fan blade 32, that is, the first fan blade 31 and the second fan blade 32 are driven simultaneously by one motor 33, so that parts and cost are reduced, the structure is more compact, the assembly efficiency is improved, and an electric control program is easy to realize.
When the fan assembly 30 works, the motor 33 rotates through the rotating shaft 332 to drive the second fan blade 32 to rotate, so that a negative pressure area is formed in the top area of the oven, airflow is driven to enter the heat dissipation air duct 21, the airflow is led out from the second air outlet 21a through the rotation of the second fan blade 32, meanwhile, negative pressure is also formed by the airflow of the second sub-air duct 21c inside the door body 12 under the action of the negative pressure, the airflow flows into the outside from the third air outlet 12a, and heat inside the door body 12 can be dissipated through the second sub-air duct 21c, so that the effects of multiple heat dissipation and temperature reduction are achieved. In addition, the rotating shaft 332 drives the first fan blade 31 to rotate at the same time, so that the air flow in the hot air duct 22 blows to the heating portion 411 of the heating pipe 41, which improves the heat cycle efficiency in the cooking cavity 10a, makes the temperature field in the cooking cavity 10a more uniform, and improves the cooking effect.
The motor 33 is disposed at the second air inlet 80b, when the fan assembly 30 works, external air flows into the heat dissipation air duct 21 through the second air inlet 80b, and is guided out from the second air outlet 21a through the rotation of the second fan blade 32, that is, external cold air flows into the heat dissipation air duct 21 through the motor 33, so that the heat dissipation and cooling effects on the motor 33 can be achieved.
In one embodiment, referring to fig. 2 to 5, the fan assembly 30 includes a mounting bracket 34 disposed at the second air inlet 80b, the mounting bracket 34 is connected to the air guiding cover 80, and the motor 33 is disposed on the mounting bracket 34. The fan assembly 30 is integrally fixed on the wind scooper 80 through the mounting bracket 34, so that the fan assembly is easy to assemble and disassemble, and the maintenance and production efficiency are improved.
In addition, the fan assembly 30 may be prefabricated components, that is, the motor 33, the first fan blade 31, the second fan blade 32, and the like of the fan assembly 30 may be assembled first, and when the cooking appliance 100 is assembled, the fan assembly 30 assembled in advance may be directly assembled in place, so that the assembly efficiency is improved.
It should be noted that, the mounting bracket 34 is provided with a hollow portion, and when the mounting bracket 34 is disposed at the second air inlet 80b, the external air flow can enter the heat dissipation air duct 21 from the hollow portion.
Illustratively, in one embodiment, referring to fig. 2, the cooking cavity 10a has a second opening 11b at the top thereof, and the cavity upper plate 50 is disposed at the second opening 11 b. That is, the inner container 11, the door 12 and the upper cavity plate 50 together define the cooking cavity 10a, the heating portion 411 of the heating tube 41 is disposed in the cooking cavity 10a, and by disposing the hot air duct 22 above the upper cavity plate 50, heat of the heating portion 411 is reduced from being transferred to the top of the oven and other parts such as the electric control box located at the top of the oven.
In other embodiments, the cooking cavity 10a has a second opening 11b at the top thereof, and the cover plate 60 is disposed at the second opening 11 b. That is, the inner container 11, the door 12 and the cover 60 together define the cooking cavity 10a, the upper cavity plate 50 is disposed in the cooking cavity 10a, the heating portion 411 of the heating tube 41 is disposed below the upper cavity plate 50, and by disposing the hot air duct 22 above the upper cavity plate 50, the heat transfer from the heating portion 411 to the top of the oven and other parts such as the electronic control box at the top of the oven is reduced.
The various embodiments/implementations provided by the utility model may be combined with one another without contradiction.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims (14)

1. A cooking appliance, comprising:
the box body is provided with a cooking cavity;
the air duct system comprises a heat dissipation air duct and a hot air duct, at least part of the heat dissipation air duct is arranged at the top of the box body, the hot air duct is arranged between the cooking cavity and the heat dissipation air duct positioned at the top of the box body, the hot air duct is provided with a first air outlet, and the heat dissipation air duct is provided with a second air outlet;
the fan assembly comprises a first fan blade arranged in the hot air duct and a second fan blade arranged in the heat dissipation duct, air in the hot air duct flows through the first air outlet to the cooking cavity under the action of the first fan blade, and air in the heat dissipation duct flows through the second air outlet to the outside under the action of the second fan blade.
2. The cooking appliance of claim 1, wherein the cooking appliance comprises a heating assembly having at least one heating tube, at least a heating portion of the heating tube being positioned within the cooking cavity, and wherein under the action of the first fan blade, air in the hot air duct flows through the first air outlet to the heating portion.
3. The cooking appliance according to claim 2, wherein the cooking appliance comprises a cavity upper plate positioned at the top of the box body and a cover plate covered on the cavity upper plate, the cover plate and the cavity upper plate enclose the hot air duct, the cavity upper plate is provided with the first air outlet, and at least the heating part of the heating pipe is positioned below the cavity upper plate.
4. The cooking appliance of claim 3, wherein a partial region of the cavity upper plate is recessed downward and forms a first avoidance region, a region of the cover plate corresponding to the first avoidance region is recessed upward and forms a second avoidance region, and the first avoidance region and the second avoidance region enclose to form the hot air duct.
5. The cooking appliance of claim 4, wherein at least a portion of the first air outlet is formed on a sidewall of the first avoidance zone.
6. A cooking appliance according to claim 3, wherein the cavity upper plate comprises a guide surface located on a side of the first air outlet away from the first fan blade, and at least part of the air flow flowing out of the first air outlet can be guided to the heating part through the guide surface.
7. The cooking appliance of claim 4, wherein the bottom wall of the first avoidance zone is provided with an air port in communication with the cooking cavity, and the first fan blade is disposed above the air port.
8. The cooking appliance according to claim 3, wherein the case includes a liner provided with the cooking cavity having a first opening at a front side thereof, and a door openably and closably provided at the first opening; the heat dissipation air duct comprises a first sub-air duct arranged at the top of the box body and a second sub-air duct arranged in the door body, and the second sub-air duct extends along the height direction of the door body.
9. The cooking appliance of claim 8, comprising a mounting plate above the cover plate and a wind scooper covering the mounting plate, wherein the mounting plate and the wind scooper enclose the first sub-air duct and the second air outlet communicated with the first sub-air duct.
10. The cooking appliance of claim 9, wherein a second air inlet is formed in the top of the air guide cover, the direction of the second air outlet is perpendicular to the direction of the second air inlet and faces the door body, and a third air outlet communicated with the second sub-air duct is formed in the position, close to the second air outlet, of the door body.
11. The cooking appliance of claim 10, wherein the fan assembly comprises a motor located at the second air inlet, the motor comprises a main body and a rotating shaft connected with the main body, and the motor is in driving connection with the first fan blade and the second fan blade through the rotating shaft.
12. The cooking appliance of claim 11, wherein the fan assembly includes a mounting bracket disposed at the second air inlet, the mounting bracket being coupled to the air guide housing, the motor being disposed on the mounting bracket.
13. The cooking appliance of claim 8, wherein the top of the cooking cavity has a second opening, and the cavity upper plate is disposed at the second opening.
14. The cooking appliance of any one of claims 1-13, wherein the cooking appliance is one of an oven, an air fryer, a steam box, and a steam oven.
CN202320678815.XU 2023-03-29 2023-03-29 Cooking electric appliance Active CN219920875U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320678815.XU CN219920875U (en) 2023-03-29 2023-03-29 Cooking electric appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320678815.XU CN219920875U (en) 2023-03-29 2023-03-29 Cooking electric appliance

Publications (1)

Publication Number Publication Date
CN219920875U true CN219920875U (en) 2023-10-31

Family

ID=88485941

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320678815.XU Active CN219920875U (en) 2023-03-29 2023-03-29 Cooking electric appliance

Country Status (1)

Country Link
CN (1) CN219920875U (en)

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