Air duct structure and microwave oven

Abstract

The utility model provides an air duct structure and a microwave oven, the microwave oven comprises an inner container, one side of the inner container is provided with a first partition plate, the first partition plate is provided with a lighting assembly and a temperature sensing assembly, and one side of the first partition plate far away from the inner container is provided with an air guide cover; the wind scooper is matched with the first partition plate to form the air duct structure, and a fan is arranged at the inlet end of the wind scooper and used for driving air to flow so as to cool the lighting assembly and the temperature sensing assembly at the same time. According to the utility model, the heat dissipation requirements of a conventional microwave oven and a double-magnetron microwave oven can be met, and the operation stability of components such as a lighting component and a temperature sensing component on the side part of the inner container is ensured; the air flow in the inner container can be simultaneously driven to flow by utilizing one fan, so that condensed water or oil drops in the inner container are avoided, and the user experience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to an air duct structure and a microwave oven. Background Art

[0002] As the pace of life quickens, consumers' demand for fast and convenient cooking appliances continues to increase; dual-magnetron microwave ovens, with their efficient and uniform heating performance, can not only meet household cooking needs, but also provide more efficient cooking solutions in commercial areas such as catering, hotels, and convenience stores. They have gradually become the representative of high-end microwave oven products.

[0003] A dual-magnetron microwave oven uses two independent magnetrons working simultaneously to generate and amplify microwave energy. These microwaves are transmitted to the oven cavity through a waveguide system to heat the food. Due to its higher operating power, the heat generated is also significantly higher than that of a traditional microwave oven, which will affect the operating reliability of components such as temperature sensors and oven lights.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The problem solved by the utility model is that the poor heat dissipation performance of the existing dual-magnetron microwave oven leads to poor operating stability of components such as lighting components and temperature sensing elements.

[0006] To address the above-mentioned issues, the present invention provides an air duct structure, mounted on a microwave oven, comprising an inner container, a first partition disposed on one side of the inner container, a lighting assembly and a temperature sensing assembly mounted on the first partition, and an air duct disposed on the side of the first partition away from the inner container. The air duct and the first partition cooperate to form the air duct structure, and a fan is disposed at the inlet end of the air duct to drive air flow and simultaneously dissipate heat from the lighting assembly and the temperature sensing assembly. This arrangement utilizes a single fan to dissipate heat from both the lighting assembly and the temperature sensing assembly, thus meeting the heat dissipation requirements of the microwave oven's side. The structure is simple and easy to manufacture.

[0007] Preferably, the air guide cover includes a bottom plate and a connecting plate. A baffle is provided on the bottom plate for limiting the position of the fan assembly. The baffle is provided with an air outlet on a side close to the connecting plate. The connecting plate is located at the upper edge of the baffle and is provided with a first side wall and a second side wall on a side close to the first partition. The first side wall and the second side wall abut against the first partition to form a first air outlet, which is connected to the air outlet. The second side wall is partially recessed to form a second air outlet. This arrangement enables the first and second air outlets to be at different distances from the air outlet, and the wind pressure of the second air outlet is greater, thereby enabling part of the outlet airflow to enter the inner tank.

[0008] Preferably, the air guide cover further includes a third side wall, a fourth side wall, and a fifth side wall provided on the connecting plate. The third side wall and the fifth side wall are respectively located on both sides of the fourth side wall. The third side wall and the fourth side wall abut against the first partition to form a third air outlet. The lengths of the fourth side wall and the fifth side wall are L1 and L2, respectively, where L1>L2. The fourth side wall and the fifth side wall abut against the first partition to form a fourth air outlet. This arrangement can provide directional air supply to multiple locations on the side of the inner tank, and can dissipate heat from the components on the side of the inner tank in a targeted manner.

[0009] Preferably, the first baffle is vertically arranged with a gap between it and the inner liner. The inner liner is provided with an air inlet and an air outlet. The air inlet is arranged near the first baffle and is connected to the second air outlet and the fourth air outlet, respectively. The air inlet and the air outlet are located on either side of the inner liner. This arrangement allows the fan to drive part of the air flowing out of the second air outlet and the fourth air outlet into the inner liner through the air inlet. At the same time, the air travels a long distance within the inner liner 1, effectively removing condensed water and oil droplets.

[0010] Preferably, the first partition is provided with a first mounting hole and a second mounting hole for mounting the temperature sensing assembly; the first mounting hole is provided adjacent to one of the second air outlet or the fourth air outlet, and the second mounting hole is provided adjacent to the other of the second air outlet or the fourth air outlet. Because the second and fourth air outlets are closer to the fan's heat dissipation distance, the wind pressure is greater, resulting in a relatively larger air output; some air can enter the first and second mounting holes and ultimately enter the inner liner through the air inlet, thereby driving air flow within the inner liner and preventing the formation of condensed water or oil droplets inside the inner liner.

[0011] Preferably, the air inlet and outlet are located at the front and rear sides of the inner pot, respectively. An air guide is provided on the side of the inner pot, covering the air outlet and guiding air outward. This arrangement can guide out condensed water, oil droplets, etc. generated during the cooking process, and the air travels a long distance within the inner pot, effectively removing condensed water and oil droplets.

[0012] Preferably, the air guide cover and the first partition are assembled by screwing and / or plugging. This arrangement can facilitate pre-positioning by plugging, taking into account the convenience and tightness of assembly; and avoid the air guide cover from loosening during use and making noise.

[0013] Preferably, the connecting plate includes a first plate, a second plate, and a third plate connected in sequence, one side of the first plate is connected to the baffle, the second plate is vertically arranged, and the first plate and the third plate are inclined toward the side close to the first partition and the inclination angles are α and β respectively, where α<β.

[0014] This setting can ensure that the air outlet portion gradually shrinks toward the side of the first partition, and the air flow can be concentrated on the setting positions of the lighting component and the temperature sensing component, thereby improving the heat dissipation effect; at the same time, it can make the fan close to the air inlet position of the upper shell of the microwave oven, thereby avoiding the hot air inside the shell from entering the fan again as much as possible, thereby improving the heat dissipation effect.

[0015] Compared with the prior art, the air duct structure and microwave oven described in the present invention have the following beneficial effects: 1) They can meet the heat dissipation requirements of conventional microwave ovens and dual-magnetron microwave ovens, ensuring the operating stability of components such as lighting components and temperature sensing components located on the side of the inner tank; 2) A fan can simultaneously drive the air flow inside the inner tank to avoid condensation water or oil droplets in the inner tank, providing a good user experience; 3) The structure is simple and easy to produce and process.

[0016] The present invention further provides a microwave oven comprising the above-mentioned air duct structure. The microwave oven has the same beneficial effects as the air duct structure, which will not be described in detail here.

[0017] Preferably, the microwave oven includes a first magnetron and a second magnetron, which are disposed at the bottom of the inner pot. This arrangement allows the two magnetrons to heat food simultaneously, further improving the heating efficiency of the microwave oven; and the structure is compact and space utilization is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of the microwave oven according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of an explosion of the microwave oven according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the air guide cover according to an embodiment of the present utility model;

[0021] Figure 4 This is another perspective view of the air guide cover described in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1-Inner liner; 101-Air inlet; 102-Air outlet; 2-First partition; 21-First mounting hole; 22-Second mounting hole; 3-Air guide hood; 31-Bottom plate; 32-Baffle; 33-Air outlet; 34-Connecting plate; 341-First plate; 342-Second plate; 343-Third plate; 35-First side wall; 351-Plug-in block; 352-First flange; 36-Second side wall; 361-Notch; 37-Third side wall; 38-Fourth side wall; 39-Fifth side wall; 391-Second flange; 4-Blower; 5-Second partition; 6-Air guide hood; 7-Rear plate; 8-Lighting assembly; 81-First furnace lamp; 82-Second furnace lamp; 9-Thermal sensing assembly; 10-Base; 11-Door assembly; 12-Electrical assembly. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. The technical features of the various embodiments of the present invention can be combined with each other without conflict.

[0025] It should be noted that the descriptions of "first", "second", etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] A duct structure is provided on a microwave oven. The microwave oven includes an inner container 1, a first partition 2 disposed on one side of the inner container 1, a lighting assembly 8 and a temperature sensing assembly 9 disposed on the first partition 2, and an air scoop 3 disposed on the side of the first partition 2 away from the inner container 1. The air scoop 3 and the first partition 2 cooperate to form the duct structure. A fan 4 is disposed at one end of the air scoop 3 to drive air flow and simultaneously dissipate heat from the lighting assembly 8 and the temperature sensing assembly 9. This arrangement utilizes a single fan 4 to dissipate heat from both the lighting assembly 8 and the temperature sensing assembly 9, meeting the heat dissipation requirements of the side of a dual-magnetron microwave oven. The structure is simple and easy to manufacture.

[0028] The air guide hood 3 includes a base plate 31 fixedly mounted on the first partition 2. A baffle 32 is disposed around the periphery of the base plate 31, and the fan 4 is positioned within the baffle 32. An air outlet 33 is disposed on one side of the baffle 32 for supplying air to the lighting assembly 8 and the temperature sensing assembly 9. A gap is provided between the first partition 2 and the inner liner 1, and thermal insulation is provided therein. The assembly of the two is conventional and will not be further described here.

[0029] As an example of the present invention, the lighting assembly 8 includes a first furnace lamp 81 and a second furnace lamp 82, and the first furnace lamp 81 is located above the second furnace lamp 82; the temperature sensing assembly 9 includes a first sensor and a second sensor, and the first partition 2 is provided with a first mounting hole 21 and a second mounting hole 22, which are respectively used to fix and assemble the first sensor and the second sensor, and the first mounting hole 21 is located above the second mounting hole 22, and the first sensor and the second sensor are inclined toward one side of the inner tank 1.

[0030] Preferably, the air guide cover 3 also includes a connecting plate 34, which is arranged on the upper edge of the baffle 32 and extends to the side away from the baffle 32. The connecting plate 34 is provided with a first side wall 35 and a second side wall 36 on the side close to the first partition 2. The first side wall 35 and the second side wall 36 are abutted against the first partition 2 to form a first air outlet portion for discharging air to the first furnace lamp 81; the second side wall 36 is provided with a second air outlet portion for discharging air to the temperature sensing component 9.

[0031] As an example of the present invention, the connecting plate 34 includes a first plate 341, a second plate 342, and a third plate 343, which are connected in sequence. One side of the first plate 341 is connected to the baffle 32, and the second plate 342 is vertically arranged. The first plate 341 and the third plate 343 are tilted toward the side closer to the first partition 2 at angles α and β, respectively, where α < β. This arrangement ensures that the air outlet gradually converges toward the first partition 2, concentrating the airflow toward the lighting assembly 8 and the temperature sensing assembly 9, thereby improving heat dissipation. It also allows the fan 4 to be closer to the air inlet of the microwave oven's upper housing, minimizing the risk of hot air from within the housing re-entering the fan 4, thereby improving heat dissipation.

[0032] As an example of the present invention, the second air outlet is a notch 361 , and the notch 361 can also be provided on the first side wall 35 for dissipating heat for one of the temperature sensing component 9 or the lighting component 8 .

[0033] The air scoop 3 is assembled with the first partition 2 by screwing and / or plugging. This arrangement facilitates pre-positioning through plugging, balancing ease of assembly and tightness. As an example of the present invention, a plug-in block 351 is provided on the first side wall 35 and / or the second side wall 36. A groove is provided on the first partition 2 at a position corresponding to the plug-in block 351, and the plug-in block 351 can be limitedly assembled into the groove. A first assembly hole is provided on the outer edge of the bottom plate 31 for fixed assembly with the first partition 2. This arrangement has a simple structure and high assembly efficiency.

[0034] As an example of the present invention, a first flange 352 is provided on one side of the first side wall 35. The first flange 352 is provided with a second assembly hole for securely assembling with the first partition 2. This arrangement allows the air guide 3 to be tightly attached to the first partition 2, preventing the air guide 3 from loosening and generating noise due to airflow impact within the air duct structure.

[0035] Preferably, the connecting plate 34 is provided with a third side wall 37 and a fourth side wall 38 on a side close to the first partition plate 2. The third side wall 37 and the fourth side wall 38 abut against the first partition plate 2 to form a third air outlet portion for discharging air toward the second furnace lamp 82. This arrangement can dissipate heat specifically for the first furnace lamp 81 and the second furnace lamp 82.

[0036] Preferably, the first and third air outlets are located at the same distance from the air outlet 33. This arrangement ensures that both have the same wind pressure, maintaining a substantially consistent air volume, and providing more uniform heat dissipation. As an example of the present invention, reinforcing ribs are provided between the second sidewall 36 and the third sidewall 37. This arrangement strengthens the air guide hood 3 and extends its service life.

[0037] Preferably, the connecting plate 34 is provided with a fifth side wall 39 on the side close to the first partition 2, and the third side wall 37 and the fifth side wall 39 are respectively located on both sides of the fourth side wall 38, and the lengths of the fourth side wall 38 and the fifth side wall 39 are L1 and L2 respectively, wherein L1>L2, and the fourth side wall 38 and the fifth side wall 39 are in contact with the first partition 2 and form a fourth air outlet portion for discharging air to the temperature sensing component 9.

[0038] This arrangement allows for targeted cooling of the temperature sensing assembly 9 and lighting assembly 8, meeting the heat dissipation requirements of the side of the dual-magnetron microwave oven. It also features a simple structure and facilitates production and processing. Preferably, the fifth side wall 39 is provided with a second flange 391, which is provided with a third mounting hole for screw assembly with the first partition 2.

[0039] Preferably, the second air outlet is disposed adjacent to the first mounting hole 21, and the fourth air outlet is disposed adjacent to the second mounting hole 22. Because the second and fourth air outlets are closer to the fan 4, the wind pressure is greater, and the corresponding air volume is greater; some air can enter the first and second mounting holes 21, 22, and ultimately enter the inner liner 1 through the air inlet 101, thereby driving the air flow within the inner liner 1 and preventing the formation of condensed water or oil droplets in the inner liner 1.

[0040] Preferably, the inner liner 1 is provided with an air inlet 101 on one side near the first partition 2. The air inlet 101 is connected to the second air outlet and the fourth air outlet. An air outlet 102 is provided on the other side of the inner liner 1. The air outlet 102 is located at the rear side of the inner liner 1, and the air inlet 101 is located at the front side of the inner liner 1. This arrangement allows the fan 4 to drive part of the air flowing out of the second air outlet and the fourth air outlet into the inner liner 1 through the air inlet 101. At the same time, the air travels a long distance within the inner liner 1, effectively removing condensed water and oil droplets.

[0041] Preferably, a rear panel 7 is provided on the rear side of the inner container 1, and an air outlet is provided on the rear panel 7. An air guide 6 is provided on the side of the inner container 1. The air guide 6 covers the air outlet 102 and is connected to the air outlet for guiding air. This arrangement can prevent condensation around the inner container 1, ensuring stable and reliable operation of the device.

[0042] Preferably, a second partition 5 is provided on the side of the inner container 1. The second partition 5 and the first partition 2 are located on both sides of the inner container 1, respectively. The second partition 5 is provided with a relief portion for mounting the air guide 6. A base 10 is provided below the inner container 1, and an electrical component 12 is provided between the base 10 and the inner container 1. A door assembly 11 is provided on the front side of the inner container 1 for taking food in and out.

[0043] The present invention also provides a microwave oven, comprising an inner container 1, the air duct structure being provided on one side of the inner container 1. The microwave oven also comprises an electrical component 12, located at the bottom of the inner container 1 and comprising a first magnetron and a second magnetron for generating microwaves to simultaneously heat food within the inner container 1.

[0044] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. An air duct structure is provided on a microwave oven, the microwave oven comprising an inner container (1), a first partition (2) is provided on one side of the inner container (1), a lighting component (8) and a temperature sensing component (9) are provided on the first partition (2), and the structure is characterized in that: An air guide cover (3) is provided on the side of the first partition (2) away from the inner container (1); the air guide cover (3) cooperates with the first partition (2) to form the air duct structure; a fan (4) is provided at the inlet end of the air guide cover (3) for driving air flow to dissipate heat to the lighting component (8) and the temperature sensing component (9) at the same time.

2. The air duct structure according to claim 1, characterized in that: The air guide cover (3) comprises a bottom plate (31) and a connecting plate (34); a baffle (32) is provided on the bottom plate (31) for limiting the assembly of the fan (4); the baffle (32) is provided with an air outlet (33) on a side close to the connecting plate (34); the connecting plate (34) is located at the upper edge of the baffle (32) and is provided with a first side wall (35) and a second side wall (36) on a side close to the first partition (2); the first side wall (35) and the second side wall (36) are in contact with the first partition (2) to form a first air outlet portion, and the first air outlet portion is connected to the air outlet (33); the second side wall (36) is partially recessed to form a second air outlet portion.

3. The air duct structure according to claim 2, characterized in that: The air guide cover (3) further includes a third side wall (37), a fourth side wall (38), and a fifth side wall (39) arranged on the connecting plate (34); the third side wall (37) and the fifth side wall (39) are respectively located on both sides of the fourth side wall (38); the third side wall (37) and the fourth side wall (38) abut against the first partition (2) to form a third air outlet; the lengths of the fourth side wall (38) and the fifth side wall (39) are L1 and L2, respectively, wherein L1>L2; the fourth side wall (38) and the fifth side wall (39) abut against the first partition (2) to form a fourth air outlet.

4. The air duct structure according to claim 3, characterized in that: The first partition (2) is arranged vertically and has a gap with the inner container (1); the inner container (1) is provided with an air inlet (101) and an air outlet (102); the air inlet (101) is arranged close to the first partition (2) and is connected to the second air outlet and / or the fourth air outlet; the air inlet (101) and the air outlet (102) are respectively located on both sides of the inner container (1).

5. The air duct structure according to claim 4, characterized in that: The first partition (2) is provided with a first mounting hole (21) and a second mounting hole (22) for assembling the temperature sensing component (9); the first mounting hole (21) is arranged adjacent to one of the second air outlet portion or the fourth air outlet portion, and the second mounting hole (22) is arranged adjacent to the other of the second air outlet portion or the fourth air outlet portion.

6. The air duct structure according to claim 4, characterized in that: The air inlet (101) and the air outlet (102) are respectively located at the front side and the rear side of the inner liner (1); an air guide cover (6) is provided on the side of the inner liner (1); the air guide cover (6) covers the air outlet (102) and is used to guide air outward.

7. The air duct structure according to any one of claims 3 to 6, characterized in that: The air guide cover (3) and the first partition plate (2) are assembled by screwing and / or plugging.

8. The air duct structure according to claim 7, characterized in that: The connecting plate (34) comprises a first plate (341), a second plate (342), and a third plate (343) connected in sequence, one side of the first plate (341) is connected to the baffle (32), the second plate (342) is arranged vertically, and the first plate (341) and the third plate (343) are inclined toward the side close to the first partition (2) and the inclination angles are α and β respectively, wherein α<β.

9. A microwave oven, characterized in that: The invention comprises the air duct structure according to any one of claims 1 to 8.

10. The microwave oven according to claim 9, wherein The microwave oven comprises a first magnetron and a second magnetron, wherein the first magnetron and the second magnetron are arranged at the bottom of the inner container (1).

Images