Air inlet structure of heating cavity

Abstract

The utility model relates to an air inlet structure of a heating cavity. The air inlet structure comprises a heating cavity arranged in a cooking main body, the hot air system is located on one side of the heating cavity and communicates with the heating cavity; the hot air system at least comprises two air outlet parts, and the heating cavity is provided with a first air inlet area and a second air inlet area which correspond to the two air outlet parts respectively; the first air inlet area and the second air inlet area are located on the same side portion of the heating cavity and arranged up and down. The hot air processing device has the advantages that a plurality of air inlet areas are arranged in the heating cavity, hot air flow is guided in at the same time, hot air processing is carried out on at least two portions in the heating cavity, and the two hot air flows moving oppositely converge in the middle of the heating cavity and carry out air flow heating on the middle of the heating cavity. Therefore, it is ensured that the heating efficiency of all the parts in the heating cavity is consistent, food in the heating cavity can have the consistent taste, and a consumer can conveniently control the processing time and the processing temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking equipment, in particular to an air inlet structure of a heating cavity. Background Art

[0002] In the prior art, there are already appliances for cooking food by air flow heating. Such appliances are usually limited to the functions of frying or baking food.

[0003] The Chinese utility model patent with the authorization announcement number CN210185391U discloses a cooking appliance, which includes: an inner container, an outer shell, a heat preservation cover, and a pot lid; the heat preservation cover is located between the inner container and the outer shell, the pot lid is hinged to the outer shell, and the cooking appliance further includes an air flow heating device, which includes an air generating device, an air flow channel, an air inlet and an air outlet; the main part of the air flow channel is located between the outer shell and the heat preservation cover, the air inlet is located on the outer shell, the air generating device is located below the heat preservation cover, and the air generating device makes the air at the air inlet flow from the air flow channel to the air outlet and vertically downward or obliquely downward towards the inside of the inner container; there are exhaust holes on the pot lid. In the present utility model, the air for air flow heating unidirectionally flows from outside the appliance into the inner container, and the heated air flow is directly discharged outside the appliance, so that there is less oil fume in the pot cavity, the air for heating food is fresh, and the cooked food has a good taste and is hygienic.

[0004] The defect of the cooking appliance in the above prior art is that the air flow only enters the cooking cavity from one position and can change the flow direction only by contacting the chamber wall in the cooking cavity to heat other positions in the cavity. This leads to the air flow entering from the middle above the cavity turning at the bottom of the heating cavity and flowing towards both sides. In the entire space of the heating cavity, the temperature in the middle is much higher than that on the side. As a result, the food processing efficiency in the middle is much higher than that of the surrounding food, resulting in inconsistent food tastes and greatly reducing the consumption satisfaction of consumers. Summary of the Utility Model

[0005] In order to solve the above problems existing in the prior art, the utility model provides an air inlet structure of a heating cavity.

[0006] The above problems of the utility model are solved by the following technical solutions:

[0007] An air inlet structure of a heating cavity includes:

[0008] A heating cavity arranged inside the cooking main body;

[0009] A hot air system, located on one side of the heating cavity and communicating with the heating cavity;

[0010] The hot air system includes at least two air outlet parts, and the heating chamber is provided with a first air inlet area and a second air inlet area corresponding to the two air outlet parts respectively;

[0011] The first air inlet area and the second air inlet area are located on the same side of the heating chamber and are arranged vertically.

[0012] The further setting of the above technical solution is: a wind guide plate is arranged between the heating chamber and the hot air system, and the first air inlet area and the second air inlet area are located on the upper and lower sides of the wind guide plate;

[0013] A first air inlet and a second air inlet are respectively arranged on the first air inlet area and the second air inlet area.

[0014] The further setting of the above technical solution is: wind guide pieces are arranged on the edge of the wind guide plate at the air inlet and extend towards the heating chamber.

[0015] The further setting of the above technical solution is: a top cover is arranged on the top of the heating chamber, and a plurality of wind guide ribs are arranged on the top cover towards the inside of the heating chamber; the wind guide ribs stop and reverse the airflow entering the top of the heating chamber in the horizontal direction.

[0016] The further setting of the above technical solution is: the wind guide ribs are arranged in sequence along the air inlet direction, and the thickness increases in sequence along the air inlet direction.

[0017] The further setting of the above technical solution is: a wind blocking plug is arranged on the second air inlet area, and the wind blocking plug is a shell with openings at both ends and a hollow in the middle;

[0018] The wind blocking plug can be inserted into the second air inlet.

[0019] The further setting of the above technical solution is: one end of the wind blocking plug is provided with a peripheral edge, and the outer end of the peripheral edge protrudes from the outer surface of the wind blocking plug.

[0020] The further setting of the above technical solution is: the wind blocking plug is made of rubber material.

[0021] The further setting of the above technical solution is: the hot air system includes a heating component and an air flow driving component arranged in a hot air shell, and the heating component is located between the wind guide plate and the air flow driving component;

[0022] The hot air shell is provided with air outlet parts corresponding to the first air inlet area and the second air inlet area.

[0023] The further setting of the above technical solution is: the air flow driving component is a centrifugal wind wheel.

[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows: Multiple air inlet areas are provided for the heating chamber, and hot airflows are introduced simultaneously to perform hot air processing on at least two parts in the heating chamber. Moreover, two counter-moving hot airflows converge in the middle of the heating chamber to perform air heating on the middle part of the heating chamber, and the heating efficiency is close to that of the upper and lower sides, thereby ensuring that the heating efficiency of each part in the heating chamber is consistent, enabling the food in the heating chamber to have a relatively consistent taste, and facilitating consumers to control the processing time and processing temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic exploded view of the present utility model.

[0026] Figure 2 is a schematic diagram of the airflow movement path.

[0027] Figure 3 is a schematic diagram of the structure of the air guide plate.

[0028] Figure 4 is a schematic diagram of the structure of the top cover.

[0029] Figure 5 is a schematic exploded view of the air guide plate and the wind blocking plug.

[0030] Figure 6 is a schematic exploded view of the hot air system.

[0031] Figure 7 is a schematic diagram of the structure of the hot air shell.

[0032] Reference numerals in the drawings: 101, heating chamber;

[0033] 300, hot air system; 310, heating component; 320, air flow driving component; 330, hot air shell; 331, air outlet groove; 340, cooling air wheel; 350, motor;

[0034] 400, air guide plate; 410, air guiding surface; 401, first air inlet; 402, second air inlet; 411, air guiding piece; 403, air outlet hole;

[0035] 500, top cover; 510, air guiding rib;

[0036] 600, wind blocking plug; 610, edge extension. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] In order to further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features, and their effects of the present utility model as follows.

[0038] AsFigures 1-7 As shown, this embodiment discloses an air inlet structure of a heating cavity, including

[0039] a heating cavity 101 arranged inside a cooking main body;

[0040] a hot air system 300, located on one side of the heating cavity 101 and communicating with the heating cavity 101;

[0041] the hot air system 300 includes at least two air outlet parts, and the heating cavity 101 is provided with a first air inlet area and a second air inlet area corresponding to the two air outlet parts respectively;

[0042] the first air inlet area and the second air inlet area are located on the same side part of the heating cavity 101 and are arranged vertically.

[0043] The above is the basic solution of this embodiment.

[0044] Specifically referring to Figure 1 and Figure 2 As shown, the hot air system 300 drives and heats the air inside the cooking main body to form a hot air flow. The hot air flow is output from the two air outlet parts and enters the heating cavity 101 through the first air inlet area and the second air inlet area respectively, and performs hot air processing on at least two parts inside the heating cavity 101. At the same time, the two hot air flows converge during the movement inside the heating cavity 101, so that the hot air flow fills the entire heating cavity 101.

[0045] In this embodiment, to ensure that the two hot air flows can respectively heat the air flow in a part of the space of the heating cavity 101, the two air inlet parts are arranged on the same side part and are arranged vertically;

[0046] In this way, referring to Figure 2 As shown, the hot air flow entering from the first air inlet area above heats the top of the heating cavity 101. When the top of the heating cavity 101 is filled with hot air flow, the hot air flow moves downward; the hot air flow entering from the second air inlet area below heats the bottom of the heating cavity 101. When the bottom of the heating cavity 101 is filled with hot air flow, the hot air flow moves upward; the two hot air flows moving in opposite directions converge in the middle of the heating cavity 101, heat the air flow in the middle of the heating cavity 101, and the heating efficiency is close to that of the upper and lower sides, so as to ensure that the heating efficiency of each part inside the heating cavity 101 is consistent, so that the food in the heating cavity 101 can have a relatively consistent taste, which is convenient for consumers to control the processing time and processing temperature.

[0047] In this embodiment, the two air inlet locations are specifically configured as follows: an air guide plate 400 is provided between the heating chamber 101 and the hot air system 300, and the first air inlet area and the second air inlet area are located at the upper and lower sides of the air guide plate 400;

[0048] The first air inlet area and the second air inlet area are respectively provided with a first air inlet 401 and a second air inlet 402 .

[0049] Reference Figure 3 As shown, in this embodiment, the air guide plate 400 is configured as a semi-enclosed structure with three side surfaces, and the middle end surface connecting the two side portions is configured as an air guide surface 410, and the first air inlet area and the second air inlet area are both configured on the air guide surface 410.

[0050] The air guide plate 400 separates the hot air system 300 and the heating chamber 101 in the cooking body. Under the action of the hot air system 300, the air flow in the heating chamber 101 is guided to the hot air system 300 through the air guide plate 400 to form a hot air flow, which is then guided back into the hot air chamber through the air guide plate 400.

[0051] Therefore, an air outlet hole 403 is provided in the middle of the air guide plate 400 .

[0052] Preferably, in order to guide the hot air flow introduced by the first air inlet 401 , in this embodiment, an air guide piece 411 is provided on the air guide plate 400 at the edge of the air inlet and extends toward the heating chamber 101 .

[0053] In this embodiment, the direction of the air guide piece 411 is perpendicular to the end surface of the air guide plate 400 , and is formed on the vertical edge of the first air inlet 401 .

[0054] In order to change the direction of movement of the hot air flow entering the first air inlet area downward, in the present embodiment, a top cover 500 is provided on the top of the heating chamber 101, and a plurality of wind guide ribs 510 are provided on the top cover 500 toward the heating chamber; the wind guide ribs 510 stop the air flow entering the top of the heating chamber 101 in the horizontal direction.

[0055] Reference Figure 2 As shown, when the hot air flow passes through the first air inlet 401 and just enters the heating chamber 101, it has a horizontal movement path. When it moves horizontally to the position of the wind guide rib 510, it collides with the side wall of the wind guide rib 510, thereby changing its moving direction and starting to move downward.

[0056] Preferably, in this embodiment, the wind guiding ribs 510 are arranged sequentially along the wind inlet direction, and the thickness increases sequentially along the wind inlet direction.

[0057] Specifically, refer to Figure 4As shown, in this embodiment, the thickness of the air guiding rib 510 closest to the first air inlet area is the smallest, and the thickness of the air guiding rib 510 increases as it is farther away from the first air inlet area. With such a setting, when moving to the area of the closest air guiding rib 510, only the hottest air flow at the top can contact the first air guiding rib 510 and change its moving direction. The hot air flow below the first air guiding rib 510 can still move horizontally until it encounters an air guiding rib 510 that can contact it.

[0058] As a result, it is formed that at different positions of the air guiding rib 510, a part of the hot air flow changes its moving direction and moves downward, so as to achieve the consistency of the hot air flow inside the heating chamber 101.

[0059] In addition, in this embodiment, the second air inlet area is located at the bottom of the heating chamber 101. In a general cooking device, a cooking pot is usually arranged inside the heating chamber 101. The upper end of the cooking pot is open and corresponds to the first air inlet area, while the lower end of the cooking pot is sealed, and there is an air inlet on the side wall for air intake. And inside the cooking main body, components are usually arranged at the bottom. To prevent the hot air flow from overflowing outward and affecting the components inside the cooking main body, in this embodiment, a wind blocking plug 600 is arranged in the second air inlet area. The wind blocking plug 600 is a shell with openings at both ends and a hollow in the middle.

[0060] The wind blocking plug 600 can be snapped into the second air inlet 402.

[0061] In this embodiment, the function of the wind blocking plug 600 is to set a wind blocking structure at the first air inlet 401 and the air inlet part at the bottom of the cooking pot, so as to prevent the hot air flow from overflowing into the gap between the cooking pot and the air guiding plate 400 when passing from the first air inlet 401 to the air inlet of the cooking pot, and then spreading to other parts inside the cooking main body.

[0062] Therefore, in this embodiment, the wind blocking plug 600 is made of rubber and can be extruded. And the length of the wind blocking plug 600 is usually set to be relatively large, and at least it can be in close contact with the outer surface of the cooking pot to avoid gaps between the wind blocking plug 600 and the outer surface of the cooking pot.

[0063] Meanwhile, in the connection structure between the wind blocking plug 600 and the first air inlet 401, one end of the wind blocking plug 600 is provided with a border 610, and the outer end of the border 610 protrudes from the outer surface of the wind blocking plug 600.

[0064] The main body of the wind blocking plug 600 is snapped into the first air inlet 401 and pushed toward the heating chamber 101 side. When pushed to the deepest position, the end face of the border 610 is in close contact with the end face of the air guiding plate 400. At this time, the wind blocking plug 600 cannot be pushed in further.

[0065] Similar to the prior art, in this embodiment, the hot air system 300 includes a heating component 310 and an air flow driving component 320 disposed within a hot air housing 330. The heating component 310 is located between the air guiding plate 400 and the air flow driving component 320.

[0066] The hot air housing 330 is provided with air outlet portions corresponding to the first air inlet region and the second air inlet region.

[0067] Preferably, the air flow driving component 320 is a centrifugal blower wheel.

[0068] Specifically, referring to Figure 6 and Figure 7 As shown, the hot air housing 330 is a semi-housing, and the groove inside is separated into an air guiding region and a heating region by a partition. The air flow driving component 320 is located within the air guiding region, and the heating component 310 is located within the heating region. A wind hole is provided at the center of the partition for air inlet.

[0069] The hot air housing 330 is provided with an air outlet groove 331 communicating with the air guiding region, and the position of the air outlet groove 331 corresponds to the positions of the first air inlet 401 and the second air inlet 402 on the air guiding plate 400. The hot air flow can overflow from the air outlet groove 331 towards the outside of the hot air housing 330 and enter the first air inlet 401 and the second air inlet 402.

[0070] Referring to Figure 7 As shown, in this embodiment, the air outlet grooves 331 are provided at the upper and lower ends of the hot air housing 330, and the two air outlet grooves 331 located at the lower part are specifically provided at two corners. Thus, in this embodiment, there are also two second air inlets 402 on the air guiding plate 400, and they are located at two corner parts of the air guiding surface 410.

[0071] The centrifugal blower wheel has a wind guiding structure with central air suction and circumferential air outlet. Therefore, when the hot air flow exits from the circumference of the centrifugal blower wheel, since other parts are all set to be closed, the hot air flow can only pass out through the two air outlet grooves 331.

[0072] In addition, in this embodiment, a cooling blower wheel 340 is further provided outside the air guiding housing. The air flow driving component 320 is driven to rotate by a motor 350. Thus, a large amount of heat will be generated during the operation of the motor 350. The cooling blower wheel 340 is connected to the shaft of the motor 350 and is located between the motor 350 and the hot air housing 330. When the motor 350 operates, it drives the cooling blower wheel 340 to rotate to dissipate heat from the motor 350.

[0073] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An air inlet structure for a heating chamber, comprising: A heating chamber (101) disposed inside the cooking body; A hot air system (300) is located on one side of the heating chamber (101) and is in communication with the heating chamber (101); Features: The hot air system (300) comprises at least two air outlet locations, and the heating chamber (101) is provided with a first air inlet area and a second air inlet area corresponding to the two air outlet locations respectively; The first air inlet area and the second air inlet area are located on the same side of the heating chamber (101) and are arranged up and down.

2. The air inlet structure of the heating chamber according to claim 1, characterized in that: An air guide plate (400) is provided between the heating chamber (101) and the hot air system (300), and the first air inlet area and the second air inlet area are located at upper and lower sides of the air guide plate (400); The first air inlet area and the second air inlet area are respectively provided with a first air inlet (401) and a second air inlet (402).

3. The air inlet structure of the heating chamber according to claim 2, characterized in that: An air guide piece (411) is provided on the air guide plate (400) at the edge of the air inlet and extends toward the heating chamber (101).

4. The air inlet structure of the heating chamber according to claim 1, characterized in that: A top cover (500) is arranged on the top of the heating chamber (101), and a plurality of air guide ribs (510) are arranged on the top cover (500) toward the heating chamber; the air guide ribs (510) stop and redirect the airflow entering the top of the heating chamber (101) in a horizontal direction.

5. The air inlet structure of the heating chamber according to claim 4, characterized in that: The wind guiding ribs (510) are arranged in sequence along the wind inlet direction, and their thickness increases in sequence along the wind inlet direction.

6. The air inlet structure of the heating chamber according to claim 2, characterized in that: The second air inlet area is provided with a wind shield (600), and the wind shield (600) is a shell with openings at both ends and a hollow middle; The wind shield (600) can be inserted into the second air inlet (402).

7. The air inlet structure of the heating chamber according to claim 6, characterized in that: One end portion of the wind shield (600) is provided with an extension edge (610), and the outer end of the extension edge (610) protrudes from the outer surface of the wind shield (600).

8. The air inlet structure of the heating chamber according to claim 6 or 7, characterized in that: The wind shield (600) is made of rubber.

9. The air inlet structure of the heating chamber according to claim 1, characterized in that: The hot air system (300) comprises a heating component (310) and an airflow driving component (320) arranged in a hot air housing (330), wherein the heating component (310) is located between the air guide plate (400) and the airflow driving component (320); The hot air shell (330) is provided with an air outlet portion corresponding to the first air inlet area and the second air inlet area.

10. The air inlet structure of the heating chamber according to claim 9, characterized in that: The airflow driving component (320) is a centrifugal wind wheel.

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