Drawer type microwave oven

Abstract

The invention relates to the technical field of household appliances, and provides a drawer type microwave oven which comprises a shell; the heat insulation cavity assembly comprises a cooking cavity and a heat insulation frame; the hot air assembly is covered with the heat insulation frame, and the heat insulation frame at least partially covers the cooking cavity; the heat dissipation fan assembly is arranged between the shell and the heat insulation cavity assembly; the magnetron is arranged at an outlet of the heat dissipation fan assembly; an air inlet hole part and an air outlet hole part are arranged on the cooking cavity, the air inlet hole part comprises a first air inlet hole and a second air inlet hole, the first air inlet hole and the second air inlet hole are symmetrically formed in the two cavity side plates, and the air outlet hole part is arranged on the cavity rear plate. According to the drawer type microwave oven, the heat insulation structure is arranged on the periphery of the cooking cavity, so that the heat dissipation difficulty of external electrical components of the cooking cavity is remarkably reduced, the heat dissipation structure is simplified, and the heat dissipation structure is low in energy consumption and high in utilization rate; and meanwhile, the hot air assembly is optimized, and the heating uniformity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and more particularly, to a drawer-type microwave oven. Background Art

[0002] With the increasing demand for the integration of kitchen appliances and space optimization, drawer-type microwave ovens have gradually become an important equipment for modern homes and commercial kitchens due to their embedded installation and space-saving features; among them, drawer-type microwave ovens with a hot air circulation component can achieve diverse cooking functions and enhance the aesthetics of the kitchen, and are widely favored.

[0003] Since drawer-type microwave ovens are usually embedded in the kitchen space, limited by the installation space of the slide rails and the user's pulling and pushing operation requirements, the problem of heat accumulation in the cooking cavity, magnetron, high-voltage transformer and other devices is particularly prominent, which has become one of the key bottlenecks restricting their operating stability and safety. For this reason, the Chinese patent with the application number 201911269016.1 is the applicant's prior application, which discloses a drawer-type microwave oven. By setting a first fan and a second fan at the rear to dissipate heat from the variable-frequency power supply and the magnetron respectively to meet their heat dissipation requirements, and at the same time, the second fan drives part of the air into the cooking cavity to meet the requirements of removing water vapor and oil fume. However, the heat dissipation structure of this drawer-type microwave oven is relatively complex and has the problems of high energy consumption and low utilization rate. At the same time, the hot air component is arranged on the top wall of the cooking cavity, and the hot air circulation is uneven, resulting in uneven heating of the food, poor cooking effect, and the hot air blows from the top to the bottom. Part of the heat may be reflected back to the top by the bottom, resulting in heat accumulation at the top and insufficient temperature at the bottom, reducing the thermal efficiency, and requiring an extended cooking time or increased energy consumption.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a drawer-type microwave oven to solve the problems in the prior art that the heat dissipation structure of the drawer-type microwave oven is relatively complex and has the problems of high energy consumption and low utilization rate. At the same time, the hot air component is arranged on the top wall of the cooking cavity, and the hot air circulation is uneven, resulting in uneven heating of the food, poor cooking effect, and the hot air blows from the top to the bottom. Part of the heat may be reflected back to the top by the bottom, resulting in heat accumulation at the top and insufficient temperature at the bottom, reducing the thermal efficiency, and requiring an extended cooking time or increased energy consumption.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] A drawer-type microwave oven, the drawer-type microwave oven comprising:

[0008] A housing;

[0009] Heat insulation cavity assembly, the heat insulation cavity assembly is arranged inside the housing, the heat insulation cavity assembly includes a cooking cavity and a heat insulation rack, and a heat insulation member is arranged between the heat insulation rack and the cooking cavity;

[0010] Hot air assembly, the hot air assembly is used to form circulating air in the cooking cavity, the heat insulation rack covers the hot air assembly, and the heat insulation rack also at least partially covers the cooking cavity;

[0011] Heat dissipation fan assembly, the heat dissipation fan assembly is arranged between the housing and the heat insulation cavity assembly;

[0012] Magnetron, the magnetron is used to emit microwaves into the cooking cavity, and the magnetron is arranged at the outlet of the heat dissipation fan assembly;

[0013] An air inlet hole part and an air outlet hole part are arranged on the cooking cavity, the hot air assembly is communicated with the cooking cavity through the air inlet hole part and the air outlet hole part, the cooking cavity includes a cavity rear plate and two relatively arranged cavity side plates, the air inlet hole part includes a first air inlet hole and a second air inlet hole, the first air inlet hole and the second air inlet hole are symmetrically arranged on the two cavity side plates, and the air outlet hole part is arranged on the cavity rear plate.

[0014] Further, the housing includes a connected rear side plate and a bottom plate, a first air inlet structure is arranged on the rear side plate and / or the bottom plate, and a frequency conversion board is arranged between the first air inlet structure and the outlet end of the fan assembly.

[0015] Further, the drawer-type microwave oven further includes a partition board, both sides of the partition board are respectively connected to the cavity rear plate and the rear side plate, the partition board cooperates with the heat dissipation fan assembly and divides the rear area of the cooking cavity into a first cavity and a second cavity, the heat dissipation fan assembly is arranged at the upper part of the first cavity, and the heat dissipation fan assembly is used to drive outside air to sequentially enter the first cavity and the second cavity through the first air inlet structure to form a first heat dissipation air duct.

[0016] Further, the cooking cavity includes a cavity front plate, an air discharge port is arranged on the cavity front plate on the side close to the heat dissipation fan assembly, a second heat dissipation air duct is formed between the air outlet air flow of the second cavity and the air discharge port, and the drawer-type microwave oven further includes a lighting assembly and a stirring motor of a stirring device, and the lighting assembly and the stirring motor are located in the second heat dissipation air duct.

[0017] Further, a second air inlet structure and an air guide port are arranged in the second cavity. The second air inlet structure is located on the bottom plate and close to the partition plate. The air guide port is located on the side of the cavity rear plate away from the heat dissipation fan assembly. A third heat dissipation air duct is formed between the second air inlet structure and the air guide port. The electronic control board is arranged in the third heat dissipation air duct. A fourth heat dissipation air duct is formed between the air guide port and the air outlet.

[0018] Further, a first air inlet and a first air outlet are arranged at one end of the cavity side plate close to the cavity front plate. The first air inlet and the first air outlet are symmetrically arranged on the two cavity side plates. Both the first air inlet and the first air outlet are connected to the fourth heat dissipation air duct. An air guiding member is arranged on the side of the cooking cavity, and the air guiding member covers the first air outlet. The outlet end of the air guiding member is close to the air outlet.

[0019] Further, a horizontally placed mounting plate is arranged at the top of the first cavity. One side of the mounting plate is connected to the right side plate and the cavity rear plate. A waveguide box is arranged at the top of the cooking cavity. The other side of the mounting plate is fixedly connected to the waveguide box. There is a gap between the mounting plate and the heat dissipation fan assembly.

[0020] Further, the cavity side plate includes:

[0021] A side plate body, which is vertically arranged on both sides of the cavity bottom wall of the cooking cavity;

[0022] An air guiding plate, which is arranged above the side plate body and inclined towards the center of the cooking cavity. The air inlet hole part is arranged on the air guiding plate.

[0023] Further, the angle at which the air guiding plate is inclined towards the center of the cooking cavity is α, and α is 25 to 65°.

[0024] Further, the height of the air outlet hole part is lower than the height of the air inlet hole part.

[0025] Further, the hot air assembly includes:

[0026] A circulation assembly, which is located at the rear of the cooking cavity;

[0027] A heating assembly, which is respectively located on the side of the cooking cavity. The circulation assembly, the heating assembly and the cooking cavity are interconnected. There are two heating assemblies and they are located on the left and right sides of the cooking cavity. The heating assemblies are arranged at the corresponding positions of the air inlet hole part.

[0028] Further, the circulation assembly includes:

[0029] A circulation fan, the circulation fan is arranged at the rear side of the rear plate of the cavity, and the circulation fan is arranged at a corresponding position of the air outlet hole part;

[0030] A fan cover, the fan cover is installed on the rear plate of the cavity, and the circulation fan is installed inside the fan cover.

[0031] Further, the heating component includes:

[0032] A heating tube, the heating tube is arranged outside the air guiding plate, and the heating tube is arranged at a corresponding position of the air inlet hole part;

[0033] An installation cover, the installation cover is installed on the air guiding plate, the heating tube is installed inside the installation cover, and the installation cover is communicated with the fan cover through a communication port.

[0034] Further, the drawer-type microwave oven further includes a drawer assembly and a box body, the box body includes a shell and a cooking cavity, both the shell and the cooking cavity are provided with openings corresponding to the drawer assembly, and the drawer assembly is openably covered on the opening.

[0035] Further, the drawer assembly includes a placement part and a support part, the placement part can place the object to be heated; the support part can support the placement part; the lowest position of the air outlet hole part is lower than the lowest position of the support part.

[0036] Compared with the prior art, the drawer-type microwave oven of the present invention has the following beneficial effects:

[0037] 1) For the drawer-type microwave oven of the present invention, the heat insulation rack and the heat insulation member cooperate with each other to effectively prevent the heat in the cooking cavity from being transferred to the outside. On the one hand, it plays a role in heat insulation and heat resistance, reduces the overall heat loss of the machine, and significantly reduces the heat dissipation difficulty of the electrical components outside the cooking cavity at the source. The heat dissipation requirements of components such as the magnetron can be met by a single heat dissipation fan assembly, improving the utilization rate of the heat dissipation fan assembly and reducing energy consumption; on the other hand, it can also gather heat in the cooking cavity, ensure a good heating rate in the cavity, quickly reach the cooking required temperature, improve the thermal efficiency, greatly reduce the cooking time, and thus reduce energy consumption; in addition, the cooperation of the heat insulation rack and the heat insulation member also improves the overall structural rigidity, reduces the deformation risk caused by thermal expansion during cooking, and improves the use safety of the drawer-type microwave oven.

[0038] 2) For the drawer-type microwave oven of the present invention, the magnetron is directly placed at the outlet of the heat dissipation fan assembly, and forced convection is used to achieve efficient heat dissipation, reduce energy consumption, improve the utilization rate of the heat dissipation fan assembly, and extend the service life of the magnetron.

[0039] 3) For the drawer - type microwave oven of the present invention, the heat - dissipation fan assembly blows air horizontally towards the upper part of the second cavity, thereby forming a negative - pressure area in the lower part of the second cavity. Without the need for an additional fan, outside air enters the second cavity under the action of negative pressure through the second air - inlet structure, achieving heat dissipation for the electronic control board while reducing energy consumption. Most of the air flows out from the top of the second cavity, and at the same time, part of the air flows towards the side of the cooking cavity through the air - guiding opening, achieving heat dissipation for components such as the drive motor located on the side of the cooking cavity while reducing energy consumption.

[0040] 4) For the drawer - type microwave oven of the present invention, the fourth air duct on the side of the cooking cavity can make the pressure at the first air - inlet higher than the pressure at the first air - outlet, so that a small amount of air enters the cooking cavity to remove generated oil droplets, water vapor, peculiar smells, etc., improving the taste and quality of the cooked food.

[0041] 5) For the drawer - type microwave oven of the present invention, the first air - inlet holes and the second air - inlet holes are symmetrically arranged on the side plates of the two cavities, which is conducive to the uniform entry of the circulating air and improves the heating uniformity. The air - outlet part is arranged on the rear plate of the cavity. The height of the air - outlet part is lower than the height of the air - inlet part, and the lowest position of the air - outlet part is lower than the lowest position of the supporting part. The position of the air - outlet part is relatively low. The air - outlet part, in cooperation with the first air - inlet holes and the second air - inlet holes, forms a "front - upper - part air - inlet - rear - lower - part air - outlet" circulating path. On the one hand, it forces the hot air to penetrate the food layer, forming a three - dimensional hot - air circulation system. The three - dimensional hot - air circulation system and microwave heating cooperate to achieve a three - dimensional heating effect, greatly improving the heating uniformity and cooking effect. On the other hand, when the user pulls out the drawer assembly, there is no need to worry about the hot air directly blowing on the hand, reducing the risk of scalding, enhancing the user's operation comfort, and having higher safety. In addition, when the drawer assembly is fully pulled out, the drawer assembly will not shake due to the hot - air disturbance, improving the stability when the drawer assembly is fully pulled out. Description of the Drawings

[0042] Figure 1 It is a schematic diagram of the drawer - type microwave oven of the present invention in an open state;

[0043] Figure 2 It is a schematic diagram of the overall structure of the drawer - type microwave oven of the present invention;

[0044] Figure 3 It is a schematic diagram of the structure of the drawer - type microwave oven of the present invention with the rear side plate hidden;

[0045] Figure 4 It is a schematic diagram of the structure of the drawer - type microwave oven of the present invention with the rear part of the top plate hidden;

[0046] Figure 5 It is a schematic diagram of the structure of the drawer - type microwave oven of the present invention with the left side plate hidden;

[0047] Figure 6 is Figure 2 Schematic diagram of the longitudinal interface along the A-A side;

[0048] Figure 7 Schematic diagram of the internal structure of the drawer-type microwave oven according to the embodiment of the present invention;

[0049] Figure 8 Schematic diagram of the sectional structure of the drawer-type microwave oven according to the embodiment of the present invention;

[0050] Figure 9 Schematic diagram of the three-dimensional structure of the cooking cavity of the drawer-type microwave oven according to the embodiment of the present invention;

[0051] Figure 10 Schematic diagram of the partially disassembled structure of the drawer-type microwave oven according to the embodiment of the present invention;

[0052] Figure 11 is Figure 10 Enlarged schematic diagram at position A in the middle;

[0053] Figure 12 Schematic diagram of the disassembled structure of the drawer assembly of the drawer-type microwave oven according to the embodiment of the present invention;

[0054] Figure 13 Schematic diagram of the three-dimensional structure of the rear panel of the cavity of the drawer-type microwave oven according to the embodiment of the present invention.

[0055] Explanation of reference numerals:

[0056] 100, Cabinet; 101, First air inlet structure; 102, Second air inlet structure; 10, Housing; 11, Top plate; 12, Left side plate; 13, Right side plate; 14, Rear side plate; 141, Protrusion; 15, Bottom plate; 16, Partition; 17, Mounting plate; 20, Cooking cavity; 21, Rear cavity plate; 211, Air guide port; 22, Front cavity plate; 221, Exhaust port; 23, U-shaped frame; 231, First air inlet; 232, First air outlet; 24, Bottom wall of the cavity; 25, Air guiding member; 26, Heat insulation rack; 27, Side cavity plate; 271, First air inlet hole; 272, Second air inlet hole; 273, Air outlet hole part; 274, Side plate body; 275, Air guide plate; 28, Top wall of the cavity; 30, First chamber; 31, Cooling fan assembly; 40, Second chamber; 41, Magnetron; 42, Electric control board; 43, Waveguide box; 44, Stirring motor; 50, Hot air assembly; 51, Circulation assembly; 511, Circulation fan; 512, Fan cover; 52, Heating assembly; 521, Heating tube; 522, Mounting cover; 55, Communication port; 60, Lighting assembly; 70, Driving motor; 80, Guide rail assembly; 9, Drawer assembly; 90, Steam flow space; 91, Door part; 92, Placing part; 921, Drawer tray; 922, Cooking tray; 9221, First tray; 9222, Second tray; 9223, Through hole part; 93, Supporting part; 300, Control box. Detailed implementation manners

[0057] In order to make the technical means, achieved purposes and effects of the present invention easy to understand, the embodiments of the present invention will be described in detail below with reference to specific drawings.

[0058] It should be noted that all the terms for indicating directions and positions in the present invention, such as: "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection situation between components in a specific state (as shown in the drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0059] In the description of the present invention, unless otherwise clearly specified and defined, 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0060] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0061] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0062] Embodiment 1

[0063] In the prior art, the heat dissipation structure of the drawer-type microwave oven is relatively complex and there is a problem of low energy consumption utilization rate. At the same time, the hot air component 50 is arranged on the top wall of the cooking cavity 20, and the hot air circulation is uneven, the food is heated unevenly, the cooking effect is not good, and the hot air blows from the top downwards. Some heat may be reflected back to the top by the bottom, resulting in the accumulation of heat at the top while the temperature at the bottom is insufficient, the thermal efficiency is reduced, and the cooking time needs to be extended or the energy consumption needs to be increased.

[0064] To solve the above technical problems, as Figures 1 to 13 shown, this embodiment proposes a drawer-type microwave oven, which includes:

[0065] A housing 10,

[0066] A heat insulation cavity component, which is arranged inside the housing 10. The heat insulation cavity component includes a cooking cavity 20 and a heat insulation rack 26. The heat insulation rack 26 covers the hot air component 50, and the heat insulation rack 26 also at least partially covers the cooking cavity 20. An insulating member is arranged between the heat insulation rack 26 and the cooking cavity 20;

[0067] A hot air component 50, which is used to form a circulating air flow in the cooking cavity 20;

[0068] A heat dissipation fan component 31, which is arranged between the housing 10 and the heat insulation cavity component;

[0069] A magnetron 41 for emitting microwaves into the cooking cavity 20, the magnetron 41 being disposed at the outlet of the heat dissipation fan assembly 31;

[0070] An air inlet hole portion and an air outlet hole portion 273 are provided on the cooking cavity 20, and the hot air assembly 50 is communicated with the cooking cavity 20 through the air inlet hole portion and the air outlet hole portion 273. The cooking cavity 20 includes a cavity rear plate 21 and two relatively disposed cavity side plates 27. The air inlet hole portion includes a first air inlet hole 271 and a second air inlet hole 272. The first air inlet hole 271 and the second air inlet hole 272 are symmetrically disposed on the two cavity side plates 27, and the air outlet hole portion 273 is disposed on the cavity rear plate 21.

[0071] This embodiment provides a drawer-type microwave oven. First, the heat insulation rack 26 and the heat insulation member cooperate to effectively prevent the heat in the cooking cavity 20 from being transferred to the outside. On the one hand, it plays a role in heat insulation and heat resistance, reducing the overall heat loss of the machine and significantly reducing the heat dissipation difficulty of the electrical components outside the cooking cavity 20 at the source. The heat dissipation requirements of components such as the magnetron 41 can be met by a single heat dissipation fan assembly 31, improving the utilization rate of the heat dissipation fan assembly 31 and reducing energy consumption. On the other hand, it can also concentrate the heat in the cooking cavity 20, ensuring a good heating rate in the cavity, quickly reaching the cooking required temperature, improving the thermal efficiency, greatly reducing the cooking time, and thus reducing energy consumption. In addition, the cooperation between the heat insulation rack 26 and the heat insulation member also improves the overall structural rigidity, reduces the risk of deformation caused by thermal expansion during cooking, and improves the use safety of the drawer-type microwave oven. Second, the heat dissipation fan assembly 31 is independent of the cooking cavity 20, avoiding the contradiction of air volume distribution caused by the shared use of hot air and the heat dissipation air duct, and improving the heat dissipation efficiency. Third, the magnetron 41 is directly placed at the outlet of the heat dissipation fan assembly 31, using forced convection to achieve efficient heat dissipation, reducing energy consumption and extending the service life of the magnetron 41. Fourth, the first air inlet hole 271 and the second air inlet hole 272 are symmetrically disposed on the two cavity side plates 27, which is conducive to the uniform entry of circulating air and improves the heating uniformity. The air outlet hole portion 273 is disposed on the cavity rear plate 21. The air outlet hole portion 273 cooperates with the first air inlet hole 271 and the second air inlet hole 272 to form a reasonable air inlet and outlet path, promoting the more uniform circulation of hot air in the heating cavity, thereby improving the heating uniformity of food, having a better cooking effect, and improving the user's satisfaction.

[0072] As a preferred example of the present application, the height of the air outlet hole portion 273 is lower than the height of the air inlet hole portion.

[0073] The first air inlet hole 271 and the second air inlet hole 272 are symmetrically arranged on the two cavity side plates 27, which is beneficial to the uniform entry of circulating air, improving the heating uniformity. The air outlet hole part 273 is arranged on the cavity rear plate 21, and the height of the air outlet hole part 273 is lower than that of the air inlet hole part. The air outlet hole part 273 cooperates with the first air inlet hole 271 and the second air inlet hole 272 to form a "front upper part air inlet - rear lower part air outlet" circulation path, forcing the hot air to penetrate the food layer to form a three-dimensional hot air circulation system. The three-dimensional hot air circulation system and the microwave heating cooperate to achieve a three-dimensional heating effect, greatly improving the heating uniformity and cooking effect.

[0074] Specifically, the heat insulation member is not specifically limited.

[0075] As an example of the invention, the heat insulation member is heat insulation cotton or a heat insulation board.

[0076] As a preferred example of the present application, the housing 10 includes a connected rear side plate 14 and a bottom plate 15. A first air inlet structure 101 is provided on the rear side plate 14 and / or the bottom plate 15, and a frequency conversion board is provided between the first air inlet structure 101 and the outlet end of the heat dissipation fan assembly 31.

[0077] This setting enables the outdoor air to pass through the frequency conversion board and the magnetron 41 in sequence for heat dissipation, and a single heat dissipation fan assembly 31 can meet the heat dissipation requirements of both the frequency conversion board and the magnetron 41. Specifically, the temperature rise sensitivity of the frequency conversion board is strong but the total heat generation is low. Cooling with fresh cold air first can ensure that the chip junction temperature ≤ 65°C; and the magnetron 41 is a high-power heat source, and the air preheated by the frequency conversion board can still effectively cool the magnetron 41, making the structure more compact. The frequency conversion board can be arranged between the inlet end of the heat dissipation fan assembly 31 and the first air inlet structure 101, or can be arranged inside the heat dissipation fan assembly 31.

[0078] In this embodiment, a first air inlet structure 101 is provided on the rear side plate 14 and the bottom plate 15.

[0079] As an example of the present invention, the housing 10 includes a connected rear side plate 14 and a bottom plate 15, and the first air inlet structure 101 includes ventilation holes provided on at least one of the rear side plate 14 and / or the bottom plate 15. This setting enables the drawer-type microwave oven to have a large air inlet area and small air inlet resistance, thereby further improving the heat dissipation efficiency. Preferably, feet are provided below the bottom plate 15. This setting can ensure that there is a gap between the bottom plate 15 and the bottom wall of the embedded space, facilitating the entry of external air.

[0080] As a preferred example of the present application, the housing 10 further includes a left side plate 12 and a right side plate 13, and the first air inlet structure 101 further includes ventilation holes provided on the left side plate 12 or the right side plate 13. This setting can intake air from the bottom, rear, and side of the drawer-type microwave oven simultaneously, avoiding the situation where individual ventilation holes are blocked, resulting in more stable heat dissipation.

[0081] In this embodiment, as Figure 6 shown, the first air inlet structure 101 is provided on the right side plate 13.

[0082] As a preferred example of the present application, a part of the rear side plate 14 protrudes away from the cooking cavity 20 to form a protruding portion 141. This setting can ensure a gap between the rear side plate 14 and the rear wall of the embedding space, making the air intake smoother. The housing 10 further includes a top plate 11, and a second heat dissipation air duct is formed between the top plate 11 and the top of the cooking cavity 20.

[0083] As a preferred example of the present application, the cooking cavity 20 includes a cavity rear plate 21. As Figure 3 shown, the drawer-type microwave oven further includes a partition 16. Two sides of the partition 16 are respectively connected to the cavity rear plate 21 and the rear side plate 14. As Figure 3 shown, the partition 16 cooperates with the heat dissipation fan assembly 31 and divides the rear area of the cooking cavity 20 to form a first cavity 30 and a second cavity 40. The heat dissipation fan assembly 31 is arranged in the upper part of the first cavity 30. The heat dissipation fan assembly 31 is used to drive outside air to sequentially enter the first cavity 30 and the second cavity 40 through the first air inlet structure 101 to form a first heat dissipation air duct.

[0084] This setting enables the forced air flow to enter the second cavity 40 from the first cavity 30 through the partition 16, eliminating the turbulence interference of the traditional open air duct, increasing the heat dissipation efficiency of the magnetron 41 by 18 - 22%; at the same time, the isolation design of the first cavity 30 can ensure that the operating environment temperature of the motor of the heat dissipation fan assembly 31 ≤ 45°C, significantly extending the service life. In addition, the partition 16 can effectively avoid the vibration transmission of the heat dissipation fan assembly 31, preventing abnormal noises caused by resonance.

[0085] As a preferred example of the present application, as Figure 1 shown, the cooking cavity 20 includes a cavity front plate 22. The cavity front plate 22 is provided with an air outlet 221 on the side close to the heat dissipation fan assembly 31. A second heat dissipation air duct is formed between the air outlet air flow of the second cavity 40 and the air outlet 221. As Figure 4 shown, the drawer-type microwave oven further includes a lighting component 60 and a stirring motor 44. The lighting component 60 and the stirring motor 44 are located in the second heat dissipation air duct.

[0086] This setting enables the air in the first heat dissipation air duct to flow out from the top of the second cavity 40 and pass above the top of the cooking cavity 20, and then be discharged from the air outlet 221 of the cavity front plate 22, making full use of the airflow after heat dissipation in the first heat dissipation air duct, and achieving heat dissipation for structures such as the lighting component 60 and the stirring motor 44 of the stirring device while reducing energy consumption.

[0087] As a preferred example of the present application, as Figure 3 and Figure 5 shown, a second air inlet structure 102 and an air guiding port 211 are arranged in the second cavity 40. The second air inlet structure 102 is located on the bottom plate 15 and close to the partition plate 16. The air guiding port 211 is located on the side of the cavity rear plate 21 away from the heat dissipation fan assembly 31. A third heat dissipation air duct is formed between the second air inlet structure 102 and the air guiding port 211. The electronic control board 42 is arranged in the third heat dissipation air duct. A fourth heat dissipation air duct is formed between the air guiding port 211 and the air outlet 221.

[0088] This setting horizontally blows air from the heat dissipation fan assembly 31 to the upper part of the second cavity 40, thereby forming a negative pressure area in the lower area of the second cavity 40. Without the need to additionally set up a fan, the outside air enters the second cavity 40 under the action of negative pressure through the second air inlet structure 102, achieving heat dissipation for the electronic control board 42 while reducing energy consumption. Most of the air flows out from the top of the second cavity 40, and at the same time, part of the air flows towards the side of the cooking cavity 20 through the air guiding port 211, achieving heat dissipation for components such as the drive motor 70 located on the side of the cooking cavity 20 while reducing energy consumption.

[0089] As a preferred example of the present application, as Figure 6 and Figure 9 shown, a first air inlet 231 and a first air outlet 232 are arranged at one end of the cavity side plate 27 close to the cavity front plate 22. The first air inlet 231 and the first air outlet 232 are symmetrically arranged on the two cavity side plates 27. Both the first air inlet 231 and the first air outlet 232 are connected to the fourth heat dissipation air duct. An air guiding member 25 is arranged on the side of the cooking cavity 20. The air guiding member 25 covers the first air outlet 232. The outlet end of the air guiding member 25 is close to the air outlet 221.

[0090] This setting can input part of the air into the cooking cavity 20 through the first air inlet 231 by the air pressure of the fourth heat dissipation air duct, and discharge it through the first air outlet 232 on the other side, so as to prevent oil droplets, water vapor, etc. generated during cooking from accumulating in the cooking cavity 20. At the same time, the peculiar smell generated during the cooking process will be discharged from the first air outlet 232 along with the air flow, rather than staying in the cooking cavity 20 for a long time, thus reducing the residue of the peculiar smell and improving the taste and quality of the cooked food; it will not have a significant impact on the heating and temperature rise in the cooking cavity 20. A heat dissipation fan assembly 31 can drive the flow of the gas in the cooking cavity 20 at the same time, with low energy consumption.

[0091] As an example of the present invention, as Figure 7 shown, the top of the first cavity 30 is provided with a horizontally placed mounting plate 17. One side of the mounting plate 17 is connected to the right side plate 13 and the cavity rear plate 21. The top of the cooking cavity 20 is provided with a waveguide box 43. The other side of the mounting plate 17 is fixedly connected to the waveguide box 43, and there is a gap between the mounting plate 17 and the heat dissipation fan assembly 31.

[0092] This setting can use the mounting plate 17 to provide a fixed position for the waveguide box 43 and the magnetron 41, and at the same time form a double-layer heat insulation structure with the heat dissipation fan assembly 31 in the upper part of the first cavity 30 to prevent the heat at the top of the cooking cavity 20 from conducting downward and affecting the operation stability of the inverter board; specifically, a rigid triangular support structure is formed by the mounting plate 17, the right side plate 13 and the cavity rear plate 21, so that the flatness error of the mounting surface of the waveguide box 43 is ≤0.05 mm / m², ensuring the accuracy of the microwave emission direction.

[0093] As a preferred example of the present application, as Figure 8 shown, the cavity side plate 27 includes:

[0094] A side plate body 274, which is vertically arranged on both sides of the cavity bottom wall 24 of the cooking cavity 20;

[0095] A wind guide plate 275, which is arranged above the side plate body 274 and inclined towards the center of the cooking cavity 20, and the air inlet hole part is arranged on the wind guide plate 275.

[0096] This design has the following advantages: First, the hot air is discharged obliquely downward through the air guide plates 275 inclined on both sides, which can form a counter-rotating vortex in the center of the cooking cavity 20, helping the heat to spread evenly throughout the cooking cavity 20, making the temperature distribution more uniform, avoiding local overheating or overcooling, and improving the cooking effect. Second, it enhances the heating power of the food, can preferentially heat the bottom of the food, accelerates the rise of the core temperature through the heat conduction of the metal baking tray, can significantly shorten the operation time of functions such as thawing, improves the thermal efficiency, and improves the cooking effect of the food while greatly reducing the cooking time. Third, the hot air discharged obliquely downward through the air guide plates 275 inclined on both sides can form an air isolation layer at the top of the cooking cavity 20, greatly reducing the upward heat conduction, significantly reducing the heat dissipation difficulty of the electrical components at the top of the cooking cavity 20, avoiding the setting of a heat insulation structure at the top of the cooking cavity 20, and reducing the cost. Fourth, it can reduce the heat loss of the hot air to a certain extent during the process of entering the cooking cavity 20, making more heat effectively act on the food and improving the energy utilization efficiency. Fifth, the inclined air guide plates 275 can guide the air to enter the cooking cavity 20 more smoothly, reducing the resistance of the air flow during the air intake process; this helps to improve the working efficiency of the hot air assembly 50, reduce energy consumption, and at the same time ensure the stable flow of the circulating air. Sixth, the inclined setting of the air guide plates 275 increases the connection strength between the cavity side plate 27 and the cavity top wall 28, making the structure of the entire cooking cavity 20 more stable. Seventh, the inclined air guide plates 275 can disperse the stress at the connection between the cavity side plate 27 and the cavity top wall 28, avoiding damage caused by stress concentration, which helps to extend the service life of the equipment and improve the reliability of the equipment.

[0097] As a preferred example of the present application, as Figure 8 shown, the angle at which the air guide plate 275 is inclined towards the center of the cooking cavity 20 is α, and α is 25 to 65°.

[0098] When the angle at which the air guide plate 275 is inclined towards the center of the cooking cavity 20 is within this angle range, a relatively ideal counter-rotating vortex can be formed in the center of the cooking cavity 20, the heat spreads evenly in the cooking cavity 20, the temperature distribution uniformity is also good, it can achieve a good cooking effect while having a good heating power for the food and a short heating time. In addition, a suitable air isolation layer is formed at the top of the cooking cavity 20, and the heat dissipation difficulty of the electrical components at the top is relatively low.

[0099] As a preferred example of the present application, as Figure 8 shown, the angle α at which the air guide plate 275 is inclined towards the center of the cooking cavity 20 is 45°.

[0100] The inclination angle α of the air deflector 275 towards the direction close to the center of the cooking cavity 20 is 45°, which can form the most ideal counter-flow vortex at the center of the cooking cavity 20. The heat diffuses most uniformly in the cooking cavity 20, the temperature distribution uniformity is also the best, the heating effect on the food is the best while achieving a good cooking effect, the heating time is the shortest. In addition, a suitable air layer is formed at the top of the cooking cavity 20, and the heat dissipation difficulty of the top electrical components is the lowest.

[0101] As a preferred example of the present application, as Figure 9 shown, the first air inlet 231 and the first air outlet 232 are arranged on the air deflector 275.

[0102] This structure can better guide the air into the cooking cavity 20. When the air pressure of the fourth heat dissipation air duct acts, the inclined air deflector 275 can make the air enter the cooking cavity 20 more smoothly through the first air inlet 231, reduce the resistance of air flow, improve the efficiency of air entering the cooking cavity 20. After the air flows in the cooking cavity 20, it is easier to converge at the first air outlet 232 along the inclined direction of the air deflector 275, and thus is discharged from the cooking cavity 20 smoothly, forming a good air circulation.

[0103] As a preferred example of the present application, as Figure 9 shown, the ventilation area of the first air inlet 231 is 1 / 8 - 1 / 6 of the ventilation area of the first air inlet hole 271, and the ventilation area of the first air outlet 232 is 1 / 8 - 1 / 6 of the ventilation area of the second air inlet hole 272. In this embodiment, the ventilation area of the first air inlet 231 is 1 / 7 of the ventilation area of the first air inlet hole 271, and the ventilation area of the first air outlet 232 is 1 / 7 of the ventilation area of the second air inlet hole 272. This design makes the air flow rate of the fourth heat dissipation air duct entering and discharging from the cooking cavity 20 through the first air inlet 231 and the first air outlet 232 relatively small. In this way, it can not only ensure a certain air flow in the cooking cavity 20 to take away the oil droplets, water vapor and peculiar smell in the cooking cavity 20, improving the taste and quality of the cooked food; but also will not have a significant impact on the heating and temperature rise in the cooking cavity 20, ensuring that the cooking equipment can heat according to the set temperature, improving the accuracy and stability of cooking; in addition, a heat dissipation fan assembly 31 can drive the gas flow in the cooking cavity 20 at the same time, with low energy consumption.

[0104] As a preferred example of the present application, as Figure 10 and Figure 11 shown, the hot air assembly 50 includes:

[0105] a circulation assembly 51, and the circulation assembly 51 is located at the rear of the cooking cavity 20;

[0106] The heating assembly 52 is located on the side of the cooking cavity 20 respectively. The circulation assembly 51, the heating assembly 52 and the cooking cavity 20 are interconnected. There are two heating assemblies 52 located on the left and right sides of the cooking cavity 20, and the heating assembly 52 is arranged at the corresponding position of the air inlet hole part.

[0107] This setting makes the hot air flow out obliquely downward through the heating assemblies 52 on both sides, which can form a counter-rotating vortex in the center of the cooking cavity 20, making the temperature distribution more uniform; at the same time, it can preferentially heat the bottom of the food, and accelerate the rise of the core temperature through the heat conduction of the metal baking tray, which can greatly shorten the operation time of functions such as thawing, and the cooking effect of the food is good; in addition, the hot air flowing obliquely downward on both sides can form an air isolation layer at the top of the cooking cavity 20, greatly reducing the upward heat conduction.

[0108] As a preferred example of the present application, as Figure 10 and Figure 11 shown, the circulation assembly 51 includes:

[0109] A circulation fan 511, the circulation fan 511 is arranged at the rear side of the cavity rear plate 21, and the circulation fan 511 is arranged at the corresponding position of the air outlet hole part 273;

[0110] A fan cover 512, the fan cover 512 is installed on the cavity rear plate 21, and the circulation fan 511 is installed inside the fan cover 512.

[0111] The circulation fan 511 is arranged at the corresponding position of the air outlet hole part 273, which can effectively guide the air to flow out from the inside of the cooking cavity 20, forming a smooth air flow circulation. This layout method conforms to the principle of air flow, reduces the resistance of the air flow, and improves the working efficiency of the circulation fan 511. The circulation fan 511 is installed inside the fan cover 512; the fan cover 512 not only plays a role in protecting the circulation fan 511, but also can guide and rectify the air flow to make the air flow blow more evenly towards the cooking cavity 20, improving the heating uniformity. The air in the cooking cavity 20 is sucked into the fan cover 512 by the circulation fan 511, and at the same time, the air in the fan cover 512 is blown into the cooking cavity 20, that is, a circulating wind is formed, so that the temperature in the cooking cavity 20 is uniform.

[0112] As a preferred example of the present application, as Figure 10 shown, a heat insulation frame 26 is arranged outside the fan cover 512, and a heat insulation member is arranged between the fan cover 512 and the heat insulation frame 26.

[0113] This setting can effectively prevent the heat in the cooking cavity 20 from being transferred to the outside of the fan cover 512, ensure that the air temperature outside the fan cover 512 is relatively low, and the heat dissipation effect of the components outside the fan cover 512 is good.

[0114] As a preferred example of the present application, as Figure 10 shown, the heating component 52 includes:

[0115] A heating tube 521, the heating tube 521 is arranged outside the air guide plate 275, and the heating tube 521 is arranged at a corresponding position of the air inlet hole part;

[0116] An installation cover 522, the installation cover 522 is installed on the air guide plate 275, the heating tube 521 is installed inside the installation cover 522, and the installation cover 522 is communicated with the fan cover 512 through a communication port 55. This design makes the installation cover 522 an important channel connecting the fan cover 512 and the air inlet hole structure of the cooking cavity 20, realizing the effective circulation of air inside and outside the cooking cavity 20.

[0117] In this way, the air in the cooking cavity 20 is sucked into the fan cover 512, and at the same time, the circulation fan 511 blows the air into the installation cover 522 to be heated by the heating tube 521, and then the heated hot air is blown into the cooking cavity 20, that is, a circulating hot air is formed, so that the heating of the food is more uniform, and the cooking effect of the food is further enhanced.

[0118] The heating tube 521 is arranged at a corresponding position of the air inlet hole part. First, the heating tube 521 is arranged at a corresponding position of the air inlet hole part. When air enters the cooking cavity 20 from the air inlet hole, it will first be heated by the heating tube 521. This design preheats the air before it enters the cooking cavity 20, improves the heating efficiency, and at the same time avoids the heat loss of the heated air, ensuring that the temperature in the cooking cavity 20 can rise rapidly. Second, the heating tube 521 and the circulation fan 511 cooperate to form a hot air circulation system. The circulation fan 511 drives the air flow, so that the heated air circulates in the cooking cavity 20, further improving the heating uniformity; whether it is the surface or the inside of the food, uniform heating can be achieved, thus ensuring the cooking effect.

[0119] As a preferred example of the present application, as Figure 10 shown, a heat insulation frame 26 is arranged outside the installation cover 522, and a heat insulation member is arranged between the installation cover 522 and the heat insulation frame 26.

[0120] This setting can effectively prevent the heat in the cooking cavity 20 from being transferred to the outside of the installation cover 522, ensure that the air temperature outside the installation cover 522 is relatively low, and the heat dissipation effect of the components outside the installation cover 522 is good.

[0121] As a preferred example of the present application, the bottom wall 24 of the cavity and the two side plate bodies 274 form a U-shaped frame 23, heat insulation frames 26 are arranged on the outer sides of the U-shaped frame 23, and the heat insulation members are arranged between the heat insulation frames 26 and the U-shaped frame 23.

[0122] This setting can effectively prevent the heat in the cooking cavity 20 from transferring to the bottom, left and right sides, ensuring that the temperature of the incoming air at the bottom, left and right sides of the cooking cavity 20 is relatively low, and the heat dissipation effect of the components is good.

[0123] The drawer-type microwave oven further includes a drawer assembly 9 and a cabinet 100. The cabinet 100 includes a housing 10 and a cooking cavity 20. Both the housing 10 and the cooking cavity 20 are provided with openings corresponding to the drawer assembly 9, and the drawer assembly 9 is openably covered on the opening.

[0124] As a preferred example of the present application, as Figure 12 shown, the drawer assembly 9 includes a door portion 91, and the door portion 91 can open and close the opening of the cooking cavity 20. When the drawer assembly 9 is pulled out from the cooking cavity 20, the door portion 91 opens the opening of the cooking cavity 20; when the drawer assembly 9 is pushed into the cooking cavity 20, the door portion 91 closes the opening of the cooking cavity 20.

[0125] As a preferred example of the present application, the drawer assembly 9 further includes a placement portion 92 and a support portion 93. The placement portion 92 can place the object to be heated; the support portion 93 can support the placement portion 92; the lowest position of the air outlet hole portion 273 is lower than the lowest position of the support portion 93.

[0126] The lowest position of the air outlet hole portion 273 is lower than the lowest position of the support portion 93, and the position of the air outlet hole portion 273 is relatively low. On the one hand, it is beneficial for the air outlet hole portion 273 to cooperate with the first air inlet hole 271 and the second air inlet hole 272 to form a "front upper part air inlet - rear lower part air outlet" circulation path, forcing the hot air to penetrate the food layer to form a three-dimensional hot air circulation system. The three-dimensional hot air circulation system and microwave heating cooperate to achieve a three-dimensional heating effect, greatly improving the heating uniformity and cooking effect. On the other hand, when the user pulls out the drawer assembly 9, there is no need to worry about the hot air directly blowing on the hand, reducing the risk of scalding, improving the user operation comfort, and having higher safety. In addition, when the drawer assembly 9 is fully pulled out, the drawer assembly 9 will not shake due to the hot air disturbance, improving the stability when the drawer assembly 9 is fully pulled out.

[0127] As a preferred example of the present application, as Figure 13 shown, the air outlet hole portion 273 is provided at the central position of the cavity rear plate 21.

[0128] This setting can ensure that the hot air evenly diffuses from the center of the cooking cavity 20 to the surroundings, reduce the temperature gradient, improve the uniformity of the hot air distribution, and thus improve the heating uniformity and cooking effect of the food.

[0129] As a preferred example of the present application, as Figure 12As shown, the placement part 92 includes a drawer tray 921 and a cooking tray 922. The drawer tray 921 is disposed above the support part 93, and the cooking tray 922 is disposed above the drawer tray 921.

[0130] The support part 93 provides a solid support for the drawer tray 921, and the drawer tray 921 in turn provides a stable platform for the cooking tray 922, making the entire placement part 92 not prone to shaking or tilting during the placement of items and the pulling process. The drawer tray 921 and the cooking tray 922 are independent components, and users can easily clean them to keep the placement part 92 clean and hygienic.

[0131] As a preferred example of the present application, as Figure 12 shown, the cooking tray 922 includes a first tray 9221 and a second tray 9222. The first tray 9221 is disposed above the drawer tray 921, and the second tray 9222 is disposed above the first tray 9221. A through-hole part 9223 is provided at the bottom of the second tray 9222. As Figure 8 shown, a steam flow space 90 is formed between the second tray 9222 and the first tray 9221.

[0132] The design of the through-hole part 9223 and the steam flow space 90, on the one hand, allows hot air or steam to flow freely below and above the second tray 9222, forming a more uniform heat cycle, making the food heated more evenly and improving the heat conduction efficiency; on the other hand, it allows excess grease or moisture to drip naturally, preventing the food from being soaked in the liquid, making the food surface crispier and the taste better, and the cooking effect is very good; at the same time, the excess grease or moisture is collected in the first tray 9221 for easy cleaning.

[0133] The drawer-type microwave oven further includes a guide rail assembly 80 and a control box 300. Their specific structures and assembly relationships are prior art and will not be elaborated here.

[0134] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A drawer-type microwave oven, characterized in that: The drawer-type microwave oven comprises: Housing (10); a heat-insulating cavity assembly, the heat-insulating cavity assembly being arranged inside the shell (10), the heat-insulating cavity assembly comprising a cooking cavity (20) and a heat-insulating frame (26), a heat-insulating element being arranged between the heat-insulating frame (26) and the cooking cavity (20); a hot air component (50), the hot air component (50) being used to form circulating air in the cooking cavity (20), the heat insulation frame (26) covering the hot air component (50), the heat insulation frame (26) also at least partially covering the cooking cavity (20); a heat dissipation fan assembly (31), the heat dissipation fan assembly (31) being arranged between the housing (10) and the heat insulation cavity assembly; a magnetron (41), the magnetron (41) being used to emit microwaves into the cooking cavity (20), the magnetron (41) being arranged at the outlet of the heat dissipation fan assembly (31); An air inlet portion and an air outlet portion (273) are provided on the cooking cavity (20); the hot air assembly (50) is connected to the cooking cavity (20) via the air inlet portion and the air outlet portion (273); the cooking cavity (20) comprises a cavity rear plate (21) and two cavity side plates (27) arranged opposite to each other; the air inlet portion comprises a first air inlet hole (271) and a second air inlet hole (272); the first air inlet hole (271) and the second air inlet hole (272) are symmetrically arranged on the two cavity side plates (27); and the air outlet portion (273) is arranged on the cavity rear plate (21).

2. A drawer-type microwave oven according to claim 1, characterized in that: The housing (10) comprises a connected rear side plate (14) and a bottom plate (15), a first air inlet structure (101) is arranged on the rear side plate (14) and / or the bottom plate (15), and a frequency conversion board is arranged between the first air inlet structure (101) and an outlet end of the fan assembly (31).

3. A drawer-type microwave oven according to claim 2, characterized in that: The drawer-type microwave oven further comprises a partition (16), the two sides of which are respectively connected to the cavity rear plate (21) and the rear side plate (14), the partition (16) cooperates with the heat dissipation fan assembly (31) and separates the rear area of ​​the cooking cavity (20) into a first cavity (30) and a second cavity (40), the heat dissipation fan assembly (31) being arranged on the upper part of the first cavity (30), the heat dissipation fan assembly (31) being used to drive external air to enter the first cavity (30) and the second cavity (40) in sequence through the first air inlet structure (101) to form a first heat dissipation air duct.

4. A drawer-type microwave oven according to claim 3, characterized in that: The cooking cavity (20) comprises a cavity front plate (22); an exhaust port (221) is arranged on a side of the cavity front plate (22) close to the heat dissipation fan assembly (31); a second heat dissipation air duct is formed between the airflow of the second cavity (40) and the exhaust port (221); the drawer-type microwave oven further comprises a lighting assembly (60) and a stirring motor (44); the lighting assembly (60) and the stirring motor (44) of the stirring device are located in the second heat dissipation air duct.

5. A drawer-type microwave oven according to claim 4, characterized in that: A second air inlet structure (102) and an air guide port (211) are arranged in the second cavity (40); the second air inlet structure (102) is located on the bottom plate (15) and is arranged close to the partition plate (16); the air guide port (211) is located on a side of the cavity rear plate (21) away from the heat dissipation fan assembly (31); a third heat dissipation air duct is formed between the second air inlet structure (102) and the air guide port (211); the electric control board (42) is arranged in the third heat dissipation air duct; and a fourth heat dissipation air duct is formed between the air guide port (211) and the exhaust port (221).

6. A drawer-type microwave oven according to claim 5, characterized in that: A first air inlet (231) and a first air outlet (232) are arranged on one end of the cavity side plate (27) close to the cavity front plate (22); the first air inlet (231) and the first air outlet (232) are symmetrically arranged on the two cavity side plates (27); the first air inlet (231) and the first air outlet (232) are both connected to the fourth heat dissipation air duct; an air induction member (25) is arranged on the side of the cooking cavity (20); the air induction member (25) covers the first air outlet (232); and the outlet end of the air induction member (25) is arranged close to the exhaust port (221).

7. A drawer-type microwave oven according to claim 3, characterized in that: A horizontally placed mounting plate (17) is arranged on the top of the first cavity (30), one side of the mounting plate (17) is connected to the right side plate (13) and the cavity rear plate (21), a waveguide box (43) is arranged on the top of the cooking cavity (20), the other side of the mounting plate (17) is fixedly connected to the waveguide box (43), and a gap exists between the mounting plate (17) and the heat dissipation fan assembly (31).

8. The drawer-type microwave oven according to claim 1, characterized in that: The cavity side plate (27) comprises: A side panel body (274), the side panel body (274) being vertically arranged on both sides of the cavity bottom wall (24) of the cooking cavity (20); An air guide plate (275), the air guide plate (275) being arranged above the side plate body (274) and inclined in a direction close to the center of the cooking cavity (20), and the air inlet hole portion being arranged on the air guide plate (275).

9. The drawer-type microwave oven according to claim 8, characterized in that: The air guide plate (275) is inclined at an angle α in a direction close to the center of the cooking cavity (20), and α is 25-65 degrees.

10. The drawer-type microwave oven according to claim 1, characterized in that: The height of the air outlet hole portion (273) is lower than the height of the air inlet hole portion.

11. The drawer-type microwave oven according to claim 8, characterized in that: The hot air component (50) comprises: a circulation component (51), the circulation component (51) being located at the rear of the cooking cavity (20); A heating component (52), wherein the heating components (52) are respectively located at the side of the cooking cavity (20), the circulation component (51), the heating component (52) and the cooking cavity (20) are interconnected, there are two heating components (52) and they are located at the left and right sides of the cooking cavity (20), and the heating components (52) are arranged at corresponding positions of the air inlet hole.

12. The drawer-type microwave oven according to claim 11, characterized in that: The circulation component (51) comprises: a circulation fan (511), the circulation fan (511) being arranged on the rear side of the cavity rear plate (21), and the circulation fan (511) being arranged at a position corresponding to the air outlet portion (273); A fan cover (512), wherein the fan cover (512) is mounted on the cavity rear plate (21), and the circulation fan (511) is mounted inside the fan cover (512).

13. The drawer-type microwave oven according to claim 12, characterized in that: The heating component (52) comprises: A heating pipe (521), the heating pipe (521) being arranged on the outside of the air guide plate (275), and the heating pipe (521) being arranged at a corresponding position of the air inlet hole; A mounting cover (522) is mounted on the air guide plate (275), the heating pipe (521) is mounted inside the mounting cover (522), and the mounting cover (522) is connected to the fan cover (512) via a connecting port (55).

14. The drawer-type microwave oven according to claim 1, characterized in that: The drawer-type microwave oven further comprises a drawer assembly (9) and a cabinet (100); the cabinet (100) comprises a shell (10) and a cooking cavity (20); the shell (10) and the cooking cavity (20) are both provided with an opening corresponding to the drawer assembly (9); the drawer assembly (9) can be openably covered on the opening.

15. The drawer-type microwave oven according to claim 14, characterized in that: The drawer assembly (9) comprises a loading portion (92) and a supporting portion (93); the loading portion (92) is capable of loading an object to be heated; the supporting portion (93) is capable of supporting the loading portion (92); and the lowest position of the air outlet portion (273) is lower than the lowest position of the supporting portion (93).

Images